MC78M12ACDT
Positive Fixed Linear Voltage RegulatorThe MC78M12ACDT is a positive fixed linear voltage regulator from onsemi. View the full MC78M12ACDT datasheet below including key specifications.
MC78M12ACDT shares its datasheet with MC78M12AC, whose page lists every part number it covers.
Official MC78M12ACDT datasheet (PDF) — the source this page was extracted from.
MC78M12ACDT Key Specifications
| Parameter | Value |
|---|---|
| Output Current | 500 mA maximum (700 mA peak) |
| Output Voltage | 12 V (11.76 V to 12.24 V at TJ = 25°C) |
| Dropout Voltage | 2.0 V typ |
| Line Regulation | 8.0 mV typ, 50 mV max |
| Load Regulation | 25 mV typ (5 mA to 500 mA) |
| Ripple Rejection | 55 dB min |
| Input Bias Current | 3.2 mA typ, 6.0 mA max |
| Input Voltage (Max) | 35 V (5.0 V - 18 V output types) |
| Output Noise Voltage | 75 µV typ (10 Hz to 100 kHz) |
| Short Circuit Current Limit | 350 mA typ |
| Operating Junction Temperature | 0°C to +125°C |
| Thermal Resistance Junction-To-Air | 92 °C/W (DT package) |
| Thermal Resistance Junction-To-Case | 5.0 °C/W (DT package) |
MC78M12ACDT Overview
Part: MC78M12ACDTRKG — ON Semiconductor (MC78M00/MC78M00A/NCV78M00 Series)
Type: Fixed Positive Linear Voltage Regulator (12 V, 3-terminal)
Description: 12 V, 500 mA positive three-terminal linear regulator with ±2% output accuracy (A suffix), internal current limiting and thermal shutdown.
Operating Conditions:
- Input voltage: 14.5–30 V (line regulation range for the 12 V option); 19 V used as test condition
- Operating junction temperature: 0 to +125 °C (for MC78M12AC; Tlow = -40 °C applies only to AB/B grades)
- Output current: 5 mA to 350 mA (specified output variation range); up to 500 mA with adequate heatsinking
Absolute Maximum Ratings:
- Max input voltage: 35 V (5.0–18 V options); 40 V (20–24 V options)
- Power dissipation: internally limited
- Max junction temperature: +150 °C
- Storage temperature: -65 to +150 °C
- Thermal resistance, DT (DPAK) package: RθJA 92 °C/W, RθJC 5.0 °C/W
Key Specs:
- Output voltage (TJ = 25 °C, MC78M12AC): 11.76 / 12 / 12.24 V (min/typ/max)
- Output voltage variation (14.5–27 V, 5 mA ≤ IO ≤ 350 mA): 11.5–12.5 V
- Line regulation (14.5–30 V, IO = 200 mA, TJ = 25 °C): 8.0 mV typ, 50 mV max
- Load regulation (5 mA ≤ IO ≤ 500 mA, TJ = 25 °C): 25 mV typ, 240 mV max
- Input bias current: 3.2 mA typ, 6.0 mA max
- Ripple rejection (IO = 300 mA, 120 Hz, TJ = 25 °C): 80 dB typ, 55 dB min
- Dropout voltage (TJ = 25 °C): 2.0 V typ
- Short-circuit current limit (VI = 35 V): 350 mA typ; peak output current 700 mA typ
- Output noise (10 Hz–100 kHz): 75 μV typ
Features:
- No external components required
- Internal short-circuit current limiting
- Internal thermal overload protection
- Output transistor safe-area compensation
- MC78M00A high accuracy (±2%) for 5, 8, 12 and 15 V
- NCV prefix for automotive and other applications requiring site and control changes
- Pb-free packages available
- ESD: HBM 2000 V, MM 200 V
Applications:
- Local on-card voltage regulation
Package:
- DPAK (DT suffix), 3-pin: Input, Ground, Output
- TO-220 (T suffix)
MC78M12ACDT Features
- No External Components Required
- Internal Short Circuit Current Limiting
- Internal Thermal Overload Protection
- Output Transistor Safe -Area Compensation
- NCV Prefix for Automotive and Other Applications Requiring Site and Control Changes
- MC78M00A High Accuracy ( ± 2%) Available for 5.0 V, 8.0 V , 12 V and 15 V
- Pb -Free Packages are Available*
This device contains 28 active transistors.
Figure 1. Representative Schematic Diagram
*For additional information on our Pb -Free strategy and soldering details, please download the ON Semiconductor Soldering and Mounting Techniques Reference Manual, SOLDERRM/D.
Figure 1. Representative Schematic Diagram
MC78M12ACDT Applications
regulator is connected to the power supply filter with long wire lengths, or if the output load capacitance is large. An input bypass capacitor should be selected to provide good high frequency characteristics to insure stable operation under all load conditions. A 0.33 m F or larger tantalum, mylar, or other capacitor having low internal impedance at high frequencies should be chosen. The bypass capacitor should be mounted with the shortest possible leads directly across the regulator's input terminals. Normally good construction techniques should be used to minimize ground loops and lead resistance drops since the regulator has no external sense lead.
The MC78M00 regulators can also be used as a current source when connected as above. In order to minimize dissipation the MC78M05C is chosen in this application. Resistor R determines the current as follows:
$$I_O = \frac{5.0\ \text{V}}{R} + I_{IB}$$
I IB = 1.5 mA over line and load changes.
For example, a 500 mA current source would require R to be a 10 W , 10 W resistor and the output voltage compliance would be the input voltage less 7.0 V.
Figure 10. Current Regulator
XX = 2 digits of type number indicating voltage.
The MC78M00 series can be current boosted with a PNP transistor. The MJ2955 provides current to 5.0 A. Resistor R in conjunction with the V BE of the PNP determines when the pass transistor begins conducting; this circuit is not short circuit proof. Input-output differential voltage minimum is increased by V BE of the pass transistor.
Figure 12. Current Boost Regulator
XX = 2 digits of type number indicating voltage.
The addition of an operational amplifier allows adjustment to higher or intermediate values while retaining regulation characteristics. The minimum voltage obtainable with this arrangement is 2.0 V greater than the regulator voltage.
Figure 11. Adjustable Output Regulator
Figure 12. Current Boost Regulator
XX = 2 digits of type number indicating voltage.
The circuit of Figure 12 can be modified to provide supply protection against short circuits by adding a short circuit sense resistor, R sc , and an additional PNP transistor. The current sensing PNP must be able to handle the short circuit current of the three-terminal regulator .Therefore, a 4.0 A plastic power transistor is specified.
Figure 13. Current Boost with Short Circuit Protection
| Device | Temperature Range | Package | Marking | Shipping † |
|---|---|---|---|---|
| MC78M05CDT | T J = 0 ° to +125 ° C | DPAK - 3 | 78M05 | 75 Units / Rail |
| MC78M05CDTG | T J = 0 ° to +125 ° C | DPAK - 3 (Pb - Free) | 78M05 | 75 Units / Rail |
| MC78M05CDTT5G | T J = 0 ° to +125 ° C | DPAK - 3 (Pb - Free) | 78M05 | 2500 / Tape & Reel |
| MC78M05CDTRK | T J = 0 ° to +125 ° C | DPAK - 3 | 78M05 | 2500 / Tape & Reel |
| MC78M05CDTRKG | T J = 0 ° to +125 ° C | DPAK - 3 (Pb - Free) | 78M05 | 2500 / Tape & Reel |
| MC78M05ACDT | T J = 0 ° to +125 ° C | DPAK - 3 | 8M05D | 75 Units / Rail |
| MC78M05ACDTG | T J = 0 ° to +125 ° C | DPAK - 3 (Pb - Free) | 8M05D | 75 Units / Rail |
| MC78M05ACDTRK | T J = 0 ° to +125 ° C | DPAK - 3 | 8M05D | 2500 / Tape & Reel |
| MC78M05ACDTRKG | T J = 0 ° to +125 ° C | DPAK - 3 (Pb - Free) | 8M05D | 2500 / Tape & Reel |
| MC78M05CT | T J = 0 ° to +125 ° C | TO - 220 | 78M05CT | 50 Units / Rail |
| MC78M05CTG | T J = 0 ° to +125 ° C | TO - 220 (Pb - Free) | 78M05CT | 50 Units / Rail |
| MC78M05ACT | T J = 0 ° to +125 ° C | TO - 220 | 78M05ACT | 50 Units / Rail |
| MC78M05ACTG | T J = 0 ° to +125 ° C | TO - 220 (Pb - Free) | 78M05ACT | 50 Units / Rail |
| MC78M05ABDT | T J = - 40 ° to +125 ° C | DPAK - 3 | 8M05A | |
| MC78M05ABDTG | T J = - 40 ° to +125 ° C | DPAK - 3 (Pb - Free) | 8M05A | 75 Units / Rail |
| MC78M05ABDTRK | T J = - 40 ° to +125 ° C | DPAK - 3 | 8M05A | 2500 / Tape & Reel |
| MC78M05ABDTRKG | T J = - 40 ° to +125 ° C | DPAK - 3 (Pb - Free) | 8M05A | 2500 / Tape & Reel |
| NCV78M05ABDTRKG* | T J = - 40 ° to +125 ° C | DPAK - 3 (Pb - Free) | 8M05A | 2500 / Tape & Reel |
| MC78M05ABT | T J = - 40 ° to +125 ° C | TO - 220 | 78M05ABT | 2500 / Tape & Reel |
| MC78M05ABTG | T J = - 40 ° to +125 ° C | TO - 220 (Pb - Free) | 78M05ABT | 50 Units / Rail |
| MC78M05BDT | T J = - 40 ° to +125 ° C | DPAK - 3 | 8M05B | |
| MC78M05BDTG | T J = - 40 ° to +125 ° C | DPAK - 3 (Pb - Free) | 8M05B | 75 Units / Rail |
| MC78M05BDTT5G | T J = - 40 ° to +125 ° C | DPAK - 3 (Pb - Free) | 8M05B | |
| MC78M05BDTRK | T J = - 40 ° to +125 ° C | DPAK - 3 | 8M05B | |
| MC78M05BDTRKG | T J = - 40 ° to +125 ° C | DPAK - 3 (Pb - Free) | 8M05B | 2500 / Tape & Reel |
| NCV78M05BDTRK* | T J = - 40 ° to +125 ° C | DPAK - 3 | 8M05B | |
| NCV78M05BDTRKG* | T J = - 40 ° to +125 ° C | DPAK - 3 (Pb - Free) | 8M05B | |
| MC78M05BT | T J = - 40 ° to +125 ° C | TO - 220 | 78M05BT | 50 Units / Rail |
| MC78M05BTG | T J = - 40 ° to +125 ° C | TO - 220 (Pb - Free) | 78M05BT | 50 Units / Rail |
| NCV78M05BTG* | T J = - 40 ° to +125 ° C | TO - 220 (Pb - Free) | 78M05BT | 50 Units / Rail |
†For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging Specifications Brochure, BRD8011/D.
*NCV devices: T low = -40 ° C, T high = +125 ° C. Guaranteed by design. NCV prefix is for automotive and other applications requiring site and control change.
| Device | Output Voltage | Temperature Range | Package | Marking | Shipping † |
|---|---|---|---|---|---|
| MC78M06CDT | T J = 0 ° to +125 ° C | DPAK - 3 | 78M06 | 75 Units / Rail | |
| MC78M06CDTG | T J = 0 ° to +125 ° C | DPAK - 3 (Pb - Free) | 78M06 | 75 Units / Rail | |
| MC78M06CDTRK | T J = 0 ° to +125 ° C | DPAK - 3 | 78M06 | 2500 / Tape & Reel | |
| MC78M06CDTRKG | T J = 0 ° to +125 ° C | DPAK - 3 (Pb - Free) | 78M06 | 2500 / Tape & Reel | |
| MC78M06CT | 6.0 V | T J = 0 ° to +125 ° C | TO - 220 | 78M06CT | 50 Units / Rail |
| MC78M06CTG | T J = 0 ° to +125 ° C | TO - 220 (Pb - Free) | 78M06CT | 50 Units / Rail | |
| MC78M06BT | T J = - 40 ° to +125 ° C | TO - 220 | 78M06BT | 50 Units / Rail | |
| MC78M06BTG | T J = - 40 ° to +125 ° C | TO - 220 (Pb - Free) | 78M06BT | 50 Units / Rail | |
| MC78M06BDTRKG | T J = - 40 ° to +125 ° C | DPAK - 3 (Pb - Free) | 8M06B | 2500 / Tape & Reel |
| Device Device | Output Voltage Output Voltage | Temperature Range Temperature Range | Package Package | Marking Marking | Shipping † Shipping † |
|---|---|---|---|---|---|
| MC78M08CDT | T J = 0 ° to +125 ° C | DPAK - 3 | 78M08 | 75 Units / Rail | |
| MC78M08CDTG | T J = 0 ° to +125 ° C | DPAK - 3 (Pb - Free) | 78M08 | 75 Units / Rail | |
| MC78M08CDTRK | T J = 0 ° to +125 ° C | DPAK - 3 | 78M08 | 2500 Units / Tape & Reel | |
| MC78M08CDTRKG | T J = 0 ° to +125 ° C | DPAK - 3 (Pb - Free) | 78M08 | 2500 Units / Tape & Reel | |
| MC78M08ACDT | T J = 0 ° to +125 ° C | DPAK - 3 | 8M08D | ||
| MC78M08ACDTG | T J = 0 ° to +125 ° C | DPAK - 3 (Pb - Free) | 8M08D | 75 Units / Rail | |
| MC78M08ACDTRK | T J = 0 ° to +125 ° C | DPAK - 3 | 8M08D | ||
| MC78M08ACDTRKG | T J = 0 ° to +125 ° C | DPAK - 3 (Pb - Free) | 8M08D | 2500 Units / Tape & Reel | |
| MC78M08CT | T J = 0 ° to +125 ° C | TO - 220 | 78M08CT | 50 Units / Rail | |
| MC78M08CTG | T J = 0 ° to +125 ° C | TO - 220 (Pb - Free) | 78M08CT | 50 Units / Rail | |
| MC78M08ACT | T J = 0 ° to +125 ° C | TO - 220 | 78M08ACT | 50 Units / Rail | |
| MC78M08ACTG | T J = 0 ° to +125 ° C | TO - 220 (Pb - Free) | 78M08ACT | 50 Units / Rail | |
| MC78M08ABDT | 8.0 V | T J = - 40 ° to +125 ° C | DPAK - 3 | 8M08A | 75 Units / Rail |
| MC78M08ABDTG | T J = - 40 ° to +125 ° C | DPAK - 3 (Pb - Free) | 8M08A | 75 Units / Rail | |
| MC78M08ABDTRK | T J = - 40 ° to +125 ° C | DPAK - 3 | 8M08A | 2500 Units / Tape & Reel | |
| MC78M08ABDTRKG | T J = - 40 ° to +125 ° C | DPAK - 3 (Pb - Free) | 8M08A | 2500 Units / Tape & Reel | |
| MC78M08ABT | T J = - 40 ° to +125 ° C | TO - 220 | 78M08ABT | 50 Units / Rail | |
| MC78M08ABTG | T J = - 40 ° to +125 ° C | TO - 220 (Pb - Free) | 78M08ABT | 50 Units / Rail | |
| MC78M08BDT | T J = - 40 ° to +125 ° C | DPAK - 3 | 8M08B | 75 Units / Rail | |
| MC78M08BDTG | T J = - 40 ° to +125 ° C | DPAK - 3 (Pb - Free) | 8M08B | 75 Units / Rail | |
| MC78M08BDTRK | T J = - 40 ° to +125 ° C | DPAK - 3 | 8M08B | 2500 Units / Tape & Reel | |
| MC78M08BDTRKG | T J = - 40 ° to +125 ° C | DPAK - 3 (Pb - Free) | 8M08B | 2500 Units / Tape & Reel | |
| NCV78M08BDTRKG* | T J = - 40 ° to +125 ° C | DPAK - 3 (Pb - Free) | 8M08B | 2500 Units / Tape & Reel | |
| MC78M08BT | T J = - 40 ° to +125 ° C | TO - 220 | 78M08BT | 50 Units / Rail | |
| MC78M08BTG | T J = - 40 ° to +125 ° C | TO - 220 (Pb - Free) | 78M08BT | 50 Units / Rail |
| Device | Output Voltage | Temperature Range | Package | Marking | Shipping † |
|---|---|---|---|---|---|
| MC78M09CDT | 9.0 V | T J = 0 ° to +125 ° C | DPAK - 3 | 78M09 | 75 Units / Rail |
| MC78M09CDTG | 9.0 V | T J = 0 ° to +125 ° C | DPAK - 3 (Pb - Free) | 78M09 | 75 Units / Rail |
| MC78M09CDTRK | 9.0 V | T J = 0 ° to +125 ° C | DPAK - 3 | 78M09 | 2500 Units / Tape & Reel |
| MC78M09CDTRKG | 9.0 V | T J = 0 ° to +125 ° C | DPAK - 3 (Pb - Free) | 78M09 | 2500 Units / Tape & Reel |
| MC78M09CT | 9.0 V | T J = 0 ° to +125 ° C | TO - 220 | 78M09CT | 50 Units / Rail |
| MC78M09CTG | 9.0 V | T J = 0 ° to +125 ° C | TO - 220 (Pb - Free) | 78M09CT | 50 Units / Rail |
| MC78M09BDT | 9.0 V | T J = - 40 ° to +125 ° C | DPAK - 3 | 8M09B | 75 Units / Rail |
| MC78M09BDTG | 9.0 V | T J = - 40 ° to +125 ° C | DPAK - 3 (Pb - Free) | 8M09B | 75 Units / Rail |
| MC78M09BDTRK | 9.0 V | T J = - 40 ° to +125 ° C | DPAK - 3 | 8M09B | 2500 Units / Tape & Reel |
| MC78M09BDTRKG | 9.0 V | T J = - 40 ° to +125 ° C | DPAK - 3 (Pb - Free) | 8M09B | 2500 Units / Tape & Reel |
| Device Device | Output Voltage Output Voltage | Temperature Range Temperature Range | Package Package | Marking Marking | Shipping † Shipping † |
|---|---|---|---|---|---|
| MC78M12CDT | DPAK - 3 | 78M12 | 75 Units / Rail | ||
| MC78M12CDTG | DPAK - 3 (Pb - Free) | 78M12 | 75 Units / Rail | ||
| MC78M12CDTT5G | DPAK - 3 (Pb - Free) | 78M12 | Units / Tape & Reel | ||
| MC78M12CDTRK | DPAK - 3 | 78M12 | Units / Tape & Reel | ||
| MC78M12CDTRKG | DPAK - 3 (Pb - Free) | 78M12 | Units / Tape & Reel | ||
| MC78M12ACDT | DPAK - 3 | 8M12D | 75 Units / Rail | ||
| MC78M12ACDTG | T J = 0 ° to +125 ° C | DPAK - 3 (Pb - Free) | 8M12D | 75 Units / Rail | |
| MC78M12ACDTRK | DPAK - 3 | 8M12D | Units / Tape & Reel | ||
| MC78M12ACDTRKG | DPAK - 3 (Pb - Free) | 8M12D | Units / Tape & Reel | ||
| MC78M12CT | TO - 220 | 78M12CT | |||
| MC78M12CTG | TO - 220 | 78M12CT | |||
| MC78M12ACT | TO - 220 | 78M12ACT | 50 Units / Rail | ||
| MC78M12ACTG | TO - 220 (Pb - Free) | 78M12ACT | |||
| MC78M12ABDT | 12 V | DPAK - 3 | 8M12A | ||
| MC78M12ABDTG | DPAK - 3 (Pb - Free) | 8M12A | 75 Units / Rail | ||
| MC78M12ABDTRK | DPAK - 3 | 8M12A | |||
| MC78M12ABDTRKG | DPAK - 3 | 8M12A | Units / Tape & Reel | ||
| MC78M12ABT | TO - 220 | 78M12ABT | |||
| MC78M12ABTG | TO - 220 | 50 Units / Rail | |||
| MC78M12BDT | (Pb - Free) DPAK - 3 | 78M12ABT | |||
| MC78M12BDTG | T J = - 40 ° to +125 ° C | DPAK - 3 | 8M12B 8M12B | 75 Units / Rail | |
| MC78M12BDTRK | |||||
| MC78M12BDTRKG | DPAK - 3 | 8M12B | |||
| DPAK - 3 (Pb - Free) | 8M12B | Units / Tape & Reel | |||
| NCV78M12BDTRK* | DPAK - 3 | 8M12B | |||
| NCV78M12BDTRKG* | DPAK - 3 (Pb - Free) | 8M12B | Units / Tape & Reel | ||
| MC78M12BT | TO - 220 | 78M12BT | |||
| MC78M12BTG | TO - 220 (Pb - Free) | 78M12BT | 50 Units / Rail |
| Device | Output Voltage | Temperature Range | Package | Marking | Shipping † |
|---|---|---|---|---|---|
| MC78M15CDT | T J = 0 ° to +125 ° C | DPAK - 3 | 78M15 | ||
| MC78M15CDTG | T J = 0 ° to +125 ° C | DPAK - 3 (Pb - Free) | 78M15 | 75 Units / Rail | |
| MC78M15CDTT5G | T J = 0 ° to +125 ° C | DPAK - 3 (Pb - Free) | 78M15 | ||
| MC78M15CDTRK | T J = 0 ° to +125 ° C | DPAK - 3 | 78M15 | Units / Tape | |
| MC78M15CDTRKG | T J = 0 ° to +125 ° C | DPAK - 3 (Pb - Free) | 78M15 | ||
| MC78M15ACDT | T J = 0 ° to +125 ° C | DPAK - 3 | 8M15D | 75 Units / Rail | |
| MC78M15ACDTG | T J = 0 ° to +125 ° C | DPAK - 3 (Pb - Free) | 8M15D | 75 Units / Rail | |
| MC78M15ACDTRK | T J = 0 ° to +125 ° C | DPAK - 3 | 8M15D | Units / Tape & Reel | |
| MC78M15ACDTRKG | T J = 0 ° to +125 ° C | DPAK - 3 (Pb - Free) | 8M15D | Units / Tape & Reel | |
| MC78M15CT | T J = 0 ° to +125 ° C | TO - 220 | 78M15CT | ||
| MC78M15CTG | T J = 0 ° to +125 ° C | TO - 220 (Pb - Free) | 78M15CT | 50 Units / Rail | |
| MC78M15ACT | T J = 0 ° to +125 ° C | TO - 220 | 78M15ACT | 50 Units / Rail | |
| MC78M15ACTG | T J = 0 ° to +125 ° C | TO - 220 (Pb - Free) | 78M15ACT | 50 Units / Rail | |
| MC78M15ABDT | DPAK - 3 | 8M15A | |||
| MC78M15ABDTG | DPAK - 3 (Pb - Free) | 8M15A | 75 Units / Rail | ||
| MC78M15ABDTRK | DPAK - 3 | 8M15A | |||
| MC78M15ABDTRKG | DPAK - 3 (Pb - Free) | 8M15A | Units / Tape & Reel | ||
| MC78M15ABT | TO - 220 | 78M15ABT | |||
| MC78M15ABTG | TO - 220 (Pb - Free) | 78M15ABT | 50 Units / Rail | ||
| MC78M15BDT | T = - 40 ° to +125 ° C | DPAK - 3 | 8M15B | ||
| MC78M15BDTG | DPAK - 3 (Pb - Free) | 8M15B | 75 Units / Rail | ||
| NCV78M15BDTG* | DPAK - 3 (Pb - Free) | 8M15B | 75 Units / Rail | ||
| MC78M15BDTRK | DPAK - 3 | 8M15B | |||
| MC78M15BDTRKG | |||||
| DPAK - 3 (Pb - Free) | 8M15B | Units / Tape & Reel | |||
| MC78M15BT | TO - 220 | 78M15BT | |||
| MC78M15BTG | TO - 220 (Pb - Free) | 78M15BT | 50 Units / Rail |
| Device | Output Voltage | Temperature Range | Package | Marking | Shipping † |
|---|---|---|---|---|---|
| MC78M18CDT | T J = 0 ° to +125 ° C | DPAK - 3 | 78M18 | 75 Units / Rail | |
| MC78M18CDTG | T J = 0 ° to +125 ° C | DPAK - 3 (Pb - Free) | 78M18 | 75 Units / Rail | |
| MC78M18CDTRK | T J = 0 ° to +125 ° C | DPAK - 3 | 78M18 | 2500 Units / Tape & Reel | |
| MC78M18CDTRKG | T J = 0 ° to +125 ° C | DPAK - 3 (Pb - Free) | 78M18 | 2500 Units / Tape & Reel | |
| MC78M18CT | 18 V | T J = 0 ° to +125 ° C | TO - 220 | 78M18CT | 50 Units / Rail |
| MC78M18CTG | T J = 0 ° to +125 ° C | TO - 220 (Pb - Free) | 78M18CT | 50 Units / Rail | |
| MC78M18BT | T J = - 40 ° to +125 ° C | TO - 220 | 78M18BT | 50 Units / Rail | |
| MC78M18BTG | T J = - 40 ° to +125 ° C | TO - 220 (Pb - Free) | 78M18BT | 50 Units / Rail | |
| MC78M20CT | 20 V | T J = 0 ° to +125 ° C | TO - 220 | 78M20CT | 50 Units / Rail |
| MC78M20CTG | 20 V | T J = 0 ° to +125 ° C | TO - 220 (Pb - Free) | 78M20CT | 50 Units / Rail |
| MC78M20BT | 20 V | T J = - 40 ° to +125 ° C | TO - 220 | 78M20BT | 50 Units / Rail |
| MC78M24CT | 24 V | T J = 0 ° to +125 ° C | TO - 220 | 78M24CT | 50 Units / Rail |
| MC78M24CTG | 24 V | T J = 0 ° to +125 ° C | TO - 220 (Pb - Free) | 78M24CT | 50 Units / Rail |
| MC78M24BT | 24 V | T J = - 40 ° to +125 ° C | TO - 220 | 78M24BT | 50 Units / Rail |
| MC78M24BTG | 24 V | T J = - 40 ° to +125 ° C | TO - 220 (Pb - Free) | 78M24BT | 50 Units / Rail |
Variants on the same datasheet
These parts have exact links to the same datasheet. They are candidates to compare, not verified drop-in replacements; check package, pinout and electrical limits.
| Part Number | Manufacturer | Package |
|---|---|---|
| MC78M12AB | onsemi | — |
| MC78M12ABDT | onsemi | DPAK-3 |
| MC78M12ABDTG | onsemi | DPAK-3 |
| MC78M12ABT | onsemi | TO-220 |
| MC78M12ABTG | onsemi | TO-220-3 |
| MC78M12AC | onsemi | TO-220 |
| MC78M12ACDTG | onsemi | DPAK-3 |
| MC78M12ACDTRKG | onsemi | TO-252-3, DPAK (2 Leads + Tab), SC-63 |
| MC78M12ACT | onsemi | TO-220 |
| MC78M12ACTG | onsemi | TO-220-3 |
| MC78M12B | onsemi | — |
| MC78M12BDT | onsemi | DPAK-3 |
| MC78M12BDTG | onsemi | DPAK-3 |
| MC78M12BDTRK | onsemi | DPAK-3 |
| MC78M12BT | onsemi | TO-220 |
| MC78M12BTG | onsemi | TO-220 |
| MC78M12C | onsemi | — |
| MC78M12C/AC/B/AB | onsemi | — |
| MC78M12CDT | onsemi | DPAK-3 |
| MC78M12CDTG | onsemi | DPAK-3 |
| MC78M12CDTRK | onsemi | DPAK-3 |
| MC78M12CT | onsemi | TO-220 |
| MC78M12CTG | onsemi | TO-220 |
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All Integrated Circuits datasheetsAll onsemi datasheets (337)
Ask your AI agent about the MC78M12ACDT
Connect SheetsData to Claude, Cursor, Codex or any MCP client and your agent reads this datasheet for you: pinout, limits, register maps and design checks, with the numbers taken from the PDF.
claude mcp add --transport http sheetsdata https://mcp.sheetsdata.com/mcp
Then ask: "Can the MC78M12ACDT run from my 12 V rail? Check it against the datasheet limits."
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