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MMBD4448-TP

Public Made by Adom

by adom

MCC(Micro Commercial Components) Switching Diodes, SOT-23. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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3D Model

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Symbol & Footprint

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Datasheet

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Contents

README

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MMBD4448-TP

MCC(Micro Commercial Components) · Switching Diodes · SOT-23

MMBD4448-TP from MCC(Micro Commercial Components), in a SOT-23. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 A passive Diode anode, connected through the single internal diode to pin 3 in the Internal Structure drawing; the part is rated for 75V VRRM and 250mA average rectified output current.
2 NC unconnected No internal connection; the Internal Structure drawing shows this lower-right terminal with no connection to the diode.
3 K passive Diode cathode, the single top terminal in the Internal Structure drawing; the part is rated for 75V DC blocking voltage and 500mA forward continuous current.

Key specifications

Parameter Value
Manufacturer MCC(Micro Commercial Components)
Package SOT-23
Category Diodes
Pins 3

Electrical characteristics

Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).

Parameter Symbol Min Typ Max Unit Conditions Page
Non-repetitive peak reverse voltage VRM 100 V 1
Peak repetitive reverse voltage VRRM 75 V 1
Working peak reverse voltage VRWM 75 V 1
DC blocking voltage VR 75 V 1
RMS reverse voltage VR(RMS) 53 V 1
Forward continuous current IFM 500 mA 1
Average rectified output current Io 250 mA 1
Non-repetitive peak forward surge current IFSM 2 A t<=1.0s 1
Non-repetitive peak forward surge current IFSM 4 A t=1.0us 1
Power dissipation Pd 350 mW Note 2: terminals kept at ambient temperature 1
Thermal resistance junction to ambient 357 °C/W Note 2: terminals kept at ambient temperature 1
Operating junction temperature range -55 150 °C 1
Storage temperature range -55 150 °C 1
Forward voltage VFM 0.62 V IF=5.0mA 2
Forward voltage VFM 0.72 V IF=5.0mA 2
Forward voltage VFM 0.855 V IF=10.0mA 2
Forward voltage VFM 1 V IF=100.0mA 2
Forward voltage VFM 1.25 V IF=150.0mA 2
Maximum peak reverse current IRM 2.5 μA VR=75V 2
Maximum peak reverse current IRM 30 μA VR=75V，Tj=150℃ 2
Maximum peak reverse current IRM 50 μA VR=25V，Tj=150℃ 2
Maximum peak reverse current IRM 25 nA VR=20V 2
Maximum junction capacitance CJ 4 pF VR=0.0V, f=1.0MHz 2
Maximum reverse recovery time trr 4 ns IF=10mA, IR=10mA, Irr=0.1*IR, RL=100Ω 2

CAD (KiCad official)

  • Symbol: MMBD4448-TP
  • Footprint: Package_TO_SOT_SMD:SOT-23
  • 3D model: SOT-23 (KiCad packages3D, STEP)
  • 3D model files: mmbd4448-tp-etched.step / mmbd4448-tp-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); mmbd4448-tp.step / mmbd4448-tp.glb are the bare package body.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: MCC(Micro Commercial Components) datasheet (4 pp, sha256 e2e9f093aa7ff7de, retrieved 2026-10-17, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-sonnet-5-5 (text+vision), consensus claude-opus-5-5 (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF