component
AD-BC846W-B
Public Made by Adomby adom
Changjing Bipolar (BJT), SOT-323. 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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README
markdownAD-BC846W-B
Changjing · Bipolar (BJT) · SOT-323
AD-BC846W-B from Changjing, 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 | BASE | input | Base of the NPN transistor; VEBO max is 6 V for AD-BC846W and IC continuous max is 0.1 A. |
| 2 | EMITTER | passive | Emitter of the NPN transistor; connected to the lowest potential in a common-emitter switching or AF amplifier stage. |
| 3 | COLLECTOR | passive | Collector of the NPN transistor; VCEO max is 65 V and VCBO max is 80 V for AD-BC846W, with 150 mW power dissipation. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Changjing |
| Package | SOT-323 |
| Category | Transistors/Thyristors |
| 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 |
|---|---|---|---|---|---|---|---|
| Collector-base voltage (AD-BC846W) | VCBO | 80 | V | 1 | |||
| Collector-emitter voltage (AD-BC846W) | VCEO | 65 | V | 1 | |||
| Emitter-base voltage (AD-BC846W) | VEBO | 6 | V | 1 | |||
| Collector continuous current | IC | 0.1 | A | Maximum allowed temperature Tj = 25°C (note 1) | 1 | ||
| Collector power dissipation | PC | 150 | mW | Maximum allowed temperature Tj = 25°C (note 1) | 1 | ||
| Thermal resistance from junction to ambient | RθJA | 833 | °C/W | Mounted on 1 inch² FR-4 board with 1oz copper, still air, Ta = 25°C (note 2) | 1 | ||
| Operating junction and storage temperature range | Tj, Tstg | -55 | 150 | °C | 1 | ||
| Collector-base breakdown voltage (AD-BC846W) | VCBO | 80 | V | IC = 10µA, IE = 0A | 2 | ||
| Collector-emitter breakdown voltage (AD-BC846W) | VCEO | 65 | V | IC = 10mA, IB = 0A | 2 | ||
| Emitter-base breakdown voltage (AD-BC846W) | VEBO | 6 | V | IE = 1µA, IC = 0A | 2 | ||
| Collector cutoff current | ICBO | 15 | nA | VCB = 30V | 2 | ||
| DC current gain (grade B) | hFE2 | 200 | 450 | VCE = 5V, IC = 2mA | 2 | ||
| Collector-emitter saturation voltage | VCE(sat) | 0.25 | V | IC = 10mA, IB = 0.5mA | 2 | ||
| Collector-emitter saturation voltage | VCE(sat) | 0.6 | V | IC = 100mA, IB = 5mA | 2 | ||
| Base-emitter voltage | VBE(on) | 580 | 660 | 700 | mV | VCE = 5V, IC = 2mA | 2 |
| Base-emitter voltage | VBE(on) | 770 | mV | IC = 100mA, IB = 5mA | 2 | ||
| Transition frequency | fT | 100 | MHz | VCE = 5V, IC = 2mA, f = 100MHz | 2 | ||
| Collector output capacitance | Cob | 4.5 | pF | VCB = 5V, f = 1MHz | 2 | ||
| Noise figure (grade B) | NF | 10 | dB | VCE = 5V, IC = 0.2mA, f = 1KHz, RS = 2KΩ, BW = 200Hz | 2 |
CAD (KiCad official)
- Symbol:
AD-BC846W-B - Footprint:
Package_TO_SOT_SMD:SOT-323_SC-70 - 3D model: SOT-323 (KiCad packages3D, STEP)
- 3D model files:
ad-bc846w-b-etched.step/ad-bc846w-b-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);ad-bc846w-b.step/ad-bc846w-b.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Changjing datasheet (6 pp, sha256
d24249718cc1bb1c, 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).