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1N4148WTQ

Surface Mount Fast Switching Diode

The 1N4148WTQ is a surface mount fast switching diode from Diodes Incorporated. View the full 1N4148WTQ datasheet below including key specifications, electrical characteristics, absolute maximum ratings.

1N4148WTQ shares its datasheet with 1N4148WT-7, whose page lists every part number it covers.

Official 1N4148WTQ datasheet (PDF) — the source this page was extracted from.

Package

SOD523

1N4148WTQ Key Specifications

ParameterValue
QualificationAEC-Q101
RMS Reverse Voltage53V
Forward Voltage (VF)0.715V max at 1mA, 0.855V at 10mA, 1.0V at 50mA, 1.25V at 150mA
Reverse Voltage (VR)80V
Power Dissipation (PD)150mW
Total Capacitance (CT)2.0pF max at VR = 0V, 1MHz
Peak Reverse Current (IR)1.0μA max at VR = 75V
Reverse Recovery Time (Trr)4.0ns max
Forward Continuous Current (IFM)250mA
Reverse Breakdown Voltage (V(BR)R)75V min at IR = 1.0μA
Average Rectified Output Current (IO)125mA
Operating And Storage Temperature Range-55°C to +150°C
Non-Repetitive Peak Reverse Voltage (VRM)100V
Thermal Resistance Junction To Ambient (RθJA)833°C/W
Non-Repetitive Peak Forward Surge Current (IFSM)2.0A (1.0μs), 1.0A (100ms)

1N4148WTQ Overview

Part: 1N4148WT — Diodes Incorporated

Type: Fast Switching Diode

Description: Surface mount fast switching diode featuring 4.0 ns reverse recovery time, 80 V reverse voltage rating, and 250 mA continuous forward current in a SOD523 package.

Operating Conditions:

  • Supply voltage: not applicable
  • Operating temperature: -55 to +150 °C

Absolute Maximum Ratings:

  • Max supply voltage: 80 V (Reverse Voltage VR), 100 V (Non-Repetitive Peak Reverse Voltage VRM)
  • Max continuous current: 250 mA (Forward Continuous Current IFM)
  • Max junction/storage temperature: -55 to +150 °C

Key Specs:

  • Reverse Breakdown Voltage: 75 V min (at IR = 1.0 μA)
  • Forward Voltage: 0.715 V max (at IF = 1.0 mA)
  • Forward Voltage: 1.0 V max (at IF = 50 mA)
  • Forward Voltage: 1.25 V max (at IF = 150 mA)
  • Peak Reverse Current: 25 nA max (at VR = 20 V)
  • Peak Reverse Current: 1.0 μA max (at VR = 75 V)
  • Total Capacitance: 2.0 pF max (at VR = 0, f = 1.0 MHz)
  • Reverse Recovery Time: 4.0 ns max (at IF = IR = 10 mA, IRR = 0.1 × IR, RL = 100 Ω)

Features:

  • Fast Switching Speed
  • Very Small Surface Mount Package
  • High Conductance
  • Totally Lead-Free & Fully RoHS Compliant
  • Halogen and Antimony Free, "Green" Device
  • AEC-Q101 qualified variant available (1N4148WTQ)

Applications:

  • General Purpose Switching Applications
  • Automotive applications (1N4148WTQ)

Package:

  • SOD523 (0.8 mm × 1.2 mm body size, 1.6 mm length including leads)

1N4148WTQ Features

  • Fast Switching Speed
  • Very Small Surface Mount Package
  • For General Purpose Switching Applications
  • High Conductance
  • Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)
  • Halogen and Antimony Free. 'Green' Device (Note 3)
  • The 1N4148WTQ is suitable for automotive applications requiring specific change control; this part is AEC-Q101 qualified, PPAP capable, and manufactured in IATF 16949 certified facilities.

https://www.diodes.com/quality/product-definitions/

SOD523

Top View

1N4148WTQ Electrical Characteristics

CharacteristicSymbolMinMaxUnitTest Conditions
Reverse Breakdown Voltage (Note 7)V (BR)R75-VI R = 1.0μA
Forward VoltageV F- - - -0.715 0.855 1.0 1.25VI F = 1.0mA I F = 10mA I F = 50mA I F = 150mA
Peak Reverse Current (Note 7)I R- - - -1.0 50 30 25μA μA μA nAV R = 75V V R = 75V, T J = +150°C V R = 25V, T J = +150°C V R = 20V
Total CapacitanceC T-2.0pFV R = 0, f = 1.0MHz
Reverse Recovery Timet RR-4.0nsI F = I R = 10mA I RR = 0.1 x I R , R L = 100Ω

Notes:

  1. Part mounted on FR-4 PC board with recommended pad layout, which can be found on our website at http://www.diodes.com/package-outlines.html.

  2. Short duration pulse test used to minimize self-heating effect.

1N4148WT

1N4148WTQ Absolute Maximum Ratings

CharacteristicCharacteristicSymbolValueUnit
Non-Repetitive Peak Reverse VoltageNon-Repetitive Peak Reverse VoltageV RM100V
Reverse VoltageReverse VoltageV R80V
RMS Reverse VoltageRMS Reverse VoltageV R(RMS)53V
Forward Continuous CurrentForward Continuous CurrentI FM250mA
Average Rectified Output CurrentAverage Rectified Output CurrentI O125mA
Non-Repetitive Peak Forward Surge Current@t = 1.0μs @t = 100msI FSM2.0 1.0A

1N4148WTQ Thermal Information

CharacteristicSymbolValueUnit
Power Dissipation (Note 6)P D150mW
Thermal Resistance Junction to Ambient Air (Note 6)R θJA833°C/W
Operating and Storage Temperature RangeT J , T STG-55 to +150°C

1N4148WTQ Package Information

  • Package: SOD523
  • Package Material: Molded Plastic, 'Green' Molding Compound. UL Flammability Classification Rating 94V-0
  • Moisture Sensitivity: Level 1 per J-STD-020
  • Terminal Connections: Cathode Band
  • Terminals: Finish-Matte Tin Annealed over Alloy 42 Lead-Frame. Solderable per MIL-STD-202, Method 208
  • Weight: 0.0014 grams (Approximate)

Device Schematic

T4 = Product Type Marking Code A Bar on Top of the Letter 'T' Denotes AT Site

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 NumberManufacturerPackage
1N4148WTDiodes IncorporatedSC-79, SOD-523F
1N4148WT-13Diodes IncorporatedSOD523
1N4148WT-7Diodes IncorporatedSC-79, SOD-523
1N4148WT-76KDiodes IncorporatedSOD523
1N4148WTQ-7Diodes IncorporatedSOD523

Other Discrete Semiconductors

  • 2N3904 – onsemi, NPN General - Purpose Amplifier
  • AO3401A – Alpha & Omega Semiconductor, P-Channel MOSFET
  • 1N4148W-13-F – Diodes Incorporated, Surface-Mount Fast Switching Diode
  • 1N4148W-7-F – Diodes Incorporated, Surface-Mount Fast Switching Diode
  • 1N4148WS – onsemi, Fast Switching Diode
  • 1N4148WS-13-F – Diodes Incorporated, Fast Switching Diode
  • 1N4148WS-7-F – Diodes Incorporated, Fast Switching Diode
  • 1N4148WSQ – Diodes Incorporated, Fast Switching Diode

All Discrete Semiconductors datasheetsAll Diodes datasheets (217)

Data on this page is extracted from publicly available manufacturer datasheets using automated tools including AI. It may contain errors or omissions. Always verify specifications against the official manufacturer datasheet before making design or purchasing decisions. See our Terms of Service. Rights holders can submit a takedown request.

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