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MMBD4448W-7-F

Public Made by Adom

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Diodes Incorporated Switching Diodes, SOT-323. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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MMBD4448W-7-F

Diodes Incorporated · Switching Diodes · SOT-323

MMBD4448W-7-F from Diodes Incorporated, in a SOT-323. 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 Anode of the single fast switching diode (bottom-left lead in the top-view internal schematic); V(BR)R 75 V min, IFM 500 mA.
2 NC unconnected No internal connection; the bottom-right lead is not connected to the diode in the internal schematic.
3 K passive Cathode of the single fast switching diode (top lead in the top-view internal schematic); VRRM 75 V, IO 250 mA.

Key specifications

Parameter Value
Manufacturer Diodes Incorporated
Package SOT-323
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
Reverse Breakdown Voltage V(BR)R 75 V IR = 10μA 2
Forward Voltage VF 0.62 0.72 V IF = 5.0mA 2
Forward Voltage VF 0.855 V IF = 10mA 2
Forward Voltage VF 1 V IF = 100mA 2
Forward Voltage VF 1.25 V IF = 150mA 2
Reverse Current IR 1 μA VR = 75V 2
Reverse Current IR 50 μA VR = 75V, TJ = 150°C 2
Reverse Current IR 30 μA VR = 25V, TJ = 150°C 2
Reverse Current IR 25 nA VR = 20V 2
Total Capacitance CT 2 pF VR = 0, f = 1.0MHz 2
Reverse Recovery Time trr 4 ns IF = IR = 10mA, Irr = 0.1 x IR, RL = 100Ω 2
Non-Repetitive Peak Reverse Voltage VRM 100 V TA = 25°C 2
Peak Repetitive Reverse Voltage VRRM 75 V TA = 25°C 2
Working Peak Reverse Voltage VRWM 75 V TA = 25°C 2
DC Blocking Voltage VR 75 V TA = 25°C 2
RMS Reverse Voltage VR(RMS) 53 V TA = 25°C 2
Forward Continuous Current IFM 500 mA TA = 25°C, Note 4 2
Average Rectified Output Current IO 250 mA TA = 25°C, Note 4 2
Non-Repetitive Peak Forward Surge Current IFSM 4 A t = 1.0μs 2
Non-Repetitive Peak Forward Surge Current IFSM 1 A t = 1.0s 2
Power Dissipation PD 200 mW Note 4 2
Thermal Resistance Junction to Ambient Air RθJA 625 °C/W Note 4 2
Operating and Storage Temperature Range TJ, TSTG -65 150 °C 2

Materials and finish

As the datasheet states them (page.json metadata.appearance; the 3D model's colours follow it).

Part Material Colour / plating Datasheet says Page
contacts tin • Terminals: Matte Tin Finish annealed over Alloy 42 leadframe (Lead Free Plating). Solderable per MIL-STD-202, Method 208 1

CAD (KiCad official)

  • Symbol: MMBD4448W-7-F
  • Footprint: Package_TO_SOT_SMD:SOT-323_SC-70
  • 3D model: SOT-323 (KiCad packages3D, STEP)
  • 3D model files: mmbd4448w-7-f-etched.step / mmbd4448w-7-f-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); mmbd4448w-7-f.step / mmbd4448w-7-f.glb are the bare package body.

Provenance

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

  • Datasheet: Diodes Incorporated datasheet (4 pp, sha256 de871bac2540f58d, retrieved 2026-10-18, 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