component
AC817-40Q-7
Public Made by Adomby adom
Diodes Incorporated Bipolar (BJT), SOT-23-3. 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
markdownAC817-40Q-7
Diodes Incorporated · Bipolar (BJT) · SOT-23-3
AC817-40Q-7 from Diodes Incorporated, in a SOT-23-3. 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 | B | input | Base; drive terminal of the NPN transistor, with VEBO max 5.0V and peak base current IBM max 200mA. |
| 2 | E | passive | Emitter; connected to the most negative node, with VEBO max 5.0V. |
| 3 | C | passive | Collector; VCEO 45V and VCBO 50V max, with continuous current IC 0.5A and peak ICM 1.0A. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Diodes Incorporated |
| Package | SOT-23-3 |
| 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 | VCBO | 50 | V | TA = +25°C | 2 | ||
| Collector-Emitter Voltage | VCEO | 45 | V | TA = +25°C | 2 | ||
| Emitter-Base Voltage | VEBO | 5 | V | TA = +25°C | 2 | ||
| Collector Current | IC | 0.5 | A | TA = +25°C | 2 | ||
| Peak Collector Current | ICM | 1 | A | TA = +25°C | 2 | ||
| Peak Base Current | IBM | 200 | mA | TA = +25°C | 2 | ||
| Power Dissipation | PD | 310 | mW | Note 6: minimum recommended pad layout, TA = +25°C | 2 | ||
| Power Dissipation | PD | 350 | mW | Note 7: 15mm x 15mm 1oz copper, TA = +25°C | 2 | ||
| Thermal Resistance, Junction to Ambient | RθJA | 403 | °C/W | Note 6: minimum recommended pad layout | 2 | ||
| Thermal Resistance, Junction to Ambient | RθJA | 357 | °C/W | Note 7: 15mm x 15mm 1oz copper | 2 | ||
| Thermal Resistance, Junction to Leads | RθJL | 350 | °C/W | Note 8 | 2 | ||
| Operating and Storage Temperature Range | TJ, TSTG | -65 | 150 | °C | 2 | ||
| ESD Human Body Model | ESD HBM | 8000 | V | JEDEC Class 3B | 2 | ||
| ESD Machine Model | ESD MM | 400 | V | JEDEC Class C | 2 | ||
| Collector-Base Breakdown Voltage | BVCBO | 50 | V | IC = 100µA | 4 | ||
| Collector-Emitter Breakdown Voltage | BVCEO | 45 | V | IC = 10mA | 4 | ||
| Emitter-Base Breakdown Voltage | BVEBO | 5 | V | IC = 100µA | 4 | ||
| Collector-Emitter Cut-Off Current | ICES | 100 | nA | VCE = 45V | 4 | ||
| Collector-Emitter Cut-Off Current | ICES | 5 | µA | VCE = 25V, TJ = +150°C | 4 | ||
| Emitter-Base Cut-Off Current | IEBO | 100 | nA | VEB = 5.0V | 4 | ||
| DC Current Gain | hFE | 250 | 600 | VCE = 1.0V, IC = 100mA | 4 | ||
| DC Current Gain | hFE | 170 | VCE = 1.0V, IC = 300mA | 4 | |||
| Collector-Emitter Saturation Voltage | VCE(SAT) | 0.7 | V | IC = 500mA, IB = 50mA | 4 | ||
| Base-Emitter Voltage | VBE | 1.2 | V | VCE = 1.0V, IC = 300mA | 4 | ||
| Gain Bandwidth Product | fT | 100 | MHz | VCE = 5.0V, IC = 10mA, f = 50MHz | 4 | ||
| Collector-Base Capacitance | CCBO | 12 | pF | VCB = 10V, f = 1.0MHz | 4 |
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 Plated Leads, Solderable per MILSTD-202, Method 208 Weight: 0.008 grams (Approximate) | 1 |
CAD (KiCad official)
- Symbol:
AC817-40Q-7 - Footprint:
Package_TO_SOT_SMD:SOT-23-3 - 3D model: SOT-23-3 (KiCad packages3D, STEP)
- 3D model files:
ac817-40q-7-etched.step/ac817-40q-7-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);ac817-40q-7.step/ac817-40q-7.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Diodes Incorporated datasheet (7 pp, sha256
e39ef6689a58bf1e, retrieved 2026-10-23, tier: manufacturer) - 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).