MC78M12ACDTRKG

Positive Voltage Regulator

The MC78M12ACDTRKG is a positive voltage regulator from onsemi. View the full MC78M12ACDTRKG datasheet below including key specifications, pinout.

MC78M12ACDTRKG shares its datasheet with MC78M12AC, whose page lists every part number it covers.

Official MC78M12ACDTRKG datasheet (PDF) — the source this page was extracted from.

Manufacturer

onsemi

MC78M12ACDTRKG Key Specifications

Parameter	Value
Accuracy	2 %
Case/Package	TO-252
China RoHS	Non-Compliant
Contact Plating	Tin
Output Current	500mA
Dropout Voltage	2 V
Halogen Free	Halogen Free
Height	2.38 mm
Height - Seated (Max)	2.51 mm
Lead Free	Lead Free
Length	6.54 mm
Lifecycle Status	Production (Last Updated: 5 years ago)
Manufacturer Lifecycle Status	ACTIVE (Last Updated: 5 years ago)
Max Input Voltage	30 V
Max Junction Temperature (Tj)	125 °C
Max Operating Temperature	125 °C
Max Output Current	500 mA
Max Output Voltage	12.5 V
Min Input Voltage	14.5 V
Min Operating Temperature	0 °C
Min Output Voltage	11.5 V
Mount	Surface Mount
Mounting Type	Surface Mount
Number of Channels	1
Number of Circuits	1
Number of Outputs	1
Number of Pins	3
Number of Regulators	1
Number of Regulators	1
Number of Terminals	2
Operating Temperature	0°C ~ 125°C
Output Configuration	Positive
Output Current	500 mA
Output Type	Fixed
Output Type	Fixed
Output Voltage	12 V
Output Voltage Accuracy	2 %
Package / Case	TO-252-3, DPAK (2 Leads + Tab), SC-63
Polarity	Positive
Power Rating	5 W
Power Supply Rejection Ratio (PSRR)	80 dB
Protection Features	Over Temperature, Short Circuit
PSRR	80dB (120Hz)
Quiescent Current	6 mA
Radiation Hardening	No
REACH SVHC	Affected
RoHS	Compliant
Supplier Device Package	DPAK
Terminal Pitch	2.29 mm
Input Voltage (Max)	35V
Output Voltage	12V
Voltage Tolerance	4.17 %
Width	6.095 mm

MC78M12ACDTRKG 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)

MC78M12ACDTRKG 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

MC78M12ACDTRKG 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	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

MC78M12ACDTRKG Pin Configuration

Package: TO-252-3 (DPAK), SC-63 — MC78M12ACDTRKG

Pin Number	Pin Name	Type	Description
1	Input	P	Unregulated input voltage
2	Ground	G	Common ground; connected to heatsink tab
3	Output	O	Regulated 12 V output
4 (Tab)	Heatsink	G	Heatsink surface, connected to Pin 2 (Ground)

Notes:

Pin numbers 1–3 are taken from the pin definition list and the DPAK-3 marking diagram (Pin 1 Input, Pin 2 Ground, Pin 3 Output); the heatsink tab is shown as terminal 4 in the case outline and is electrically tied to Pin 2.
MC78M12ACDTRKG is the DPAK-3 (Pb-Free), 2500 Units / Tape & Reel variant with 12 V nominal output and high-accuracy (±2%) option, T J = 0 °C to +125 °C, marking 8M12D per the ordering table.
Input must be bypassed with at least 0.33 µF close to the input pins for stability where long leads or large output capacitance are present.

MC78M12ACDTRKG Ordering Information

MPN	Package	Temperature Range	Packing
—	—	—	—

No ordering information was provided in the datasheet section; the section body is empty.

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
MC78M12ACDT	onsemi	DPAK-3
MC78M12ACDTG	onsemi	DPAK-3
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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LP5907MFX-3.3/NOPB – Texas Instruments, Low-Noise, Low-IQ LDO
AP7343D-30FS4-7B – Diodes Incorporated, 300mA High PSRR Low-Noise LDO
ME6211C33M5G-N – Nanjing Micro One, High PSRR Low-Noise CMOS LDO Regulator
LM317 – Texas Instruments, Adjustable Regulator
AAT3221IGV-3.3-T1 – Skyworks Solutions, LDO Linear Regulator
AMS1117 – Advanced Monolithic Systems, Low Dropout Voltage Regulator
AMS1117-1.2 – EVVO, Low Dropout Regulator
AMS1117-1.5 – Advanced Monolithic Systems, Low Dropout Voltage Regulator

All Linear Regulators (LDO) datasheets All onsemi datasheets (337)

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