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BAS31-D87Z

Public Made by Adom

by adom

onsemi Diodes - General Purpose, SOT-23-3L. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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BAS31-D87Z

onsemi · Diodes - General Purpose · SOT-23-3L

BAS31-D87Z from onsemi, in a SOT-23-3L. 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 A1 passive Anode of the first diode, whose cathode is tied internally to pin 3 (series pair); each diode is rated 120 V VRRM and 200 mA average forward current.
2 K2 passive Cathode of the second diode, whose anode is tied internally to pin 3 (series pair); each diode is rated 120 V VRRM and 200 mA average forward current.
3 K1/A2 passive Common node joining the cathode of the first diode and the anode of the second diode in the series connection.

Key specifications

Parameter Value
Manufacturer onsemi
Package SOT-23-3L
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
Breakdown Voltage VR 120 V IR = 1.0 mA 3
Reverse Current IR 100 nA VR = 90 V 3
Reverse Current IR 100 μA VR = 90 V, TA = 150°C 3
Forward Voltage VF 750 mV IF = 10 mA 3
Forward Voltage VF 840 mV IF = 50 mA 3
Forward Voltage VF 900 mV IF = 100 mA 3
Forward Voltage VF 1 V IF = 200 mA 3
Forward Voltage VF 1.25 V IF = 400 mA 3
Total Capacitance CT 35 pF VR = 0, f = 1.0 MHz 3
Reverse Recovery Time trr 50 ns IF = IR = 30 mA, IRR = 3.0 mA, RL = 100 Ω 3
Maximum Repetitive Reverse Voltage VRRM 120 V 2
Average Rectified Forward Current IF(AV) 200 mA 2
Non-Repetitive Peak Forward Surge Current IFSM 1 A Pulse Width = 1.0 second 2
Non-Repetitive Peak Forward Surge Current IFSM 2 A Pulse Width = 1.0 microsecond 2
Storage Temperature Range TSTG -55 150 °C 2
Operating Junction Temperature TJ 150 °C 2
Power Dissipation PD 350 mW 3
Thermal Resistance, Junction-to-Ambient RθJA 357 °C/W 3

CAD (KiCad official)

  • Symbol: BAS31-D87Z
  • Footprint: Package_TO_SOT_SMD:SOT-23-3
  • 3D model: SOT-23-3L (KiCad packages3D, STEP)
  • 3D model files: bas31-d87z-etched.step / bas31-d87z-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); bas31-d87z.step / bas31-d87z.glb are the bare package body.

Provenance

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

  • Datasheet: onsemi datasheet (7 pp, sha256 d0d82bb34eb10138, retrieved 2026-10-28, tier: manufacturer)
  • 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