component
BCM857BS-7-F
Public Made by Adomby adom
Diodes Incorporated Bipolar (BJT), SOT-363. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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Contents
README
markdownBCM857BS-7-F
Diodes Incorporated · Bipolar (BJT) · SOT-363
BCM857BS-7-F from Diodes Incorporated, in a SOT-363. 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 | E1 | passive | Emitter of PNP transistor 1; transistors are fully internally isolated, with VEBO rated at -5V. |
| 2 | B1 | passive | Base of PNP transistor 1; peak base current IBM is -200mA. |
| 3 | C2 | passive | Collector of PNP transistor 2; VCEO -45V, IC -100mA continuous and ICM -200mA peak. |
| 4 | E2 | passive | Emitter of PNP transistor 2; VEBO rated at -5V. |
| 5 | B2 | passive | Base of PNP transistor 2; peak base current IBM is -200mA. |
| 6 | C1 | passive | Collector of PNP transistor 1; VCEO -45V, IC -100mA continuous and ICM -200mA peak. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Diodes Incorporated |
| Package | SOT-363 |
| Category | Transistors/Thyristors |
| Pins | 6 |
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Collector-Emitter Breakdown Voltage | BVCEO | -45 | V | IC = -10mA | 2 | ||
| Collector-Base Breakdown Voltage | BVCBO | -50 | V | IC = -100µA | 2 | ||
| Emitter-Base Breakdown Voltage | BVEBO | -5 | V | IE = -100µA | 2 | ||
| DC Current Gain | hFE | 220 | 475 | VCE = -5V, IC = -2mA | 2 | ||
| DC Current Gain matching | hFE1 / hFE2 | 0.9 | 1 | VCE = -5V, IC = -2mA | 2 | ||
| Collector-Emitter Saturation Voltage | VCE(sat) | -100 | mV | IC = -10mA, IB = -0.5mA | 2 | ||
| Collector-Emitter Saturation Voltage | VCE(sat) | -400 | mV | IC = -100mA, IB = -5mA | 2 | ||
| Base-Emitter Voltage | VBE(on) | -580 | -665 | -750 | mV | VCE = -5V, IC = -2mA | 2 |
| Base-Emitter Voltage matching | VBE1(on) - VBE2(on) | 2 | mV | VCE = -5V, IC = -2mA | 2 | ||
| Collector-Cutoff Current | ICBO | -15 | nA | VCB = -30V | 2 | ||
| Collector-Cutoff Current | ICBO | -4 | µA | VCB = -30V, TA = +150°C | 2 | ||
| Emitter Cutoff Current | IEBO | -100 | nA | VEB = -5V | 2 | ||
| Gain Bandwidth Product | fT | 100 | MHz | VCE = -5V, IC = -10mA, f = 100MHz | 2 | ||
| Collector-Base Capacitance | CCBO | 2 | 3 | pF | VCB = -10V, f = 1MHz | 2 | |
| Collector Current | IC | -100 | mA | 2 | |||
| Peak Collector Current | ICM | -200 | mA | 2 | |||
| Peak Base Current | IBM | -200 | mA | 2 | |||
| Collector-Base Voltage | VCBO | -50 | V | 2 | |||
| Collector-Emitter Voltage | VCEO | -45 | V | 2 | |||
| Emitter-Base Voltage | VEBO | -5 | V | 2 | |||
| Power Dissipation | PD | 200 | mW | Total Device; Note 6 | 2 | ||
| Operating and Storage Temperature Range | TJ, TSTG | -65 | 150 | °C | 2 | ||
| Thermal Resistance, Junction to Ambient Air | RJA | 625 | °C/W | Note 6 | 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: Finish, Matte Tin Finish. Solderable per MIL-STD-202, Method 208 | 1 |
CAD (KiCad official)
- Symbol:
BCM857BS-7-F - Footprint:
Package_TO_SOT_SMD:SOT-363_SC-70-6 - 3D model: SOT-363 (KiCad packages3D, STEP)
- 3D model files:
bcm857bs-7-f-etched.step/bcm857bs-7-f-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);bcm857bs-7-f.step/bcm857bs-7-f.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Diodes Incorporated datasheet (5 pp, sha256
0684a83587661ef9, retrieved 2026-10-18, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-sonnet-5-5(text+vision), consensusclaude-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).