component
FMMT495TA
Public Made by Adomby adom
Diodes Incorporated Bipolar (BJT), SOT-23. 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
markdownFMMT495TA
Diodes Incorporated · Bipolar (BJT) · SOT-23
FMMT495TA from Diodes Incorporated, in a SOT-23. 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 limited to 7 V and base current IB up to 200 mA. |
| 2 | E | passive | Emitter; NPN emitter terminal, with emitter-base breakdown voltage BVEBO of 7 V minimum. |
| 3 | C | passive | Collector; single lead on one side of the package, with VCEO 150 V, VCBO 170 V, IC 1 A continuous and ICM 2 A peak. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Diodes Incorporated |
| Package | SOT-23 |
| 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-Emitter Breakdown Voltage (Note 9) | BVCEO | 150 | V | IC = 10mA | 4 | ||
| Collector-Base Breakdown Voltage | BVCBO | 170 | V | IC = 100µA | 4 | ||
| Emitter-Base Breakdown Voltage | BVEBO | 7 | V | IE = 100µA | 4 | ||
| Collector Cutoff Current | ICBO | 100 | nA | VCB = 150V | 4 | ||
| Emitter Cutoff Current | IEBO | 100 | nA | VEB = 5V | 4 | ||
| Collector Emitter Cutoff Current | ICES | 100 | nA | VCE = 150V | 4 | ||
| Static Forward Current Transfer Ratio (Note 9) | hFE | 100 | IC = 1mA, VCE = 10V | 4 | |||
| Static Forward Current Transfer Ratio (Note 9) | hFE | 100 | 300 | IC = 250mA, VCE = 10V | 4 | ||
| Static Forward Current Transfer Ratio (Note 9) | hFE | 50 | IC = 500mA, VCE = 10V | 4 | |||
| Static Forward Current Transfer Ratio (Note 9) | hFE | 10 | IC = 1A, VCE = 10V | 4 | |||
| Collector-Emitter Saturation Voltage (Note 9) | VCE(SAT) | 0.2 | V | IC = 250mA, IB = 25mA | 4 | ||
| Collector-Emitter Saturation Voltage (Note 9) | VCE(SAT) | 0.3 | V | IC = 500mA, IB = 50mA | 4 | ||
| Base-Emitter Turn-On Voltage (Note 9) | VBE(ON) | 1 | V | IC = 500mA, VCE = 10V | 4 | ||
| Base-Emitter Saturation Voltage (Note 9) | VBE(SAT) | 1 | V | IC = 500mA, IB = 50mA | 4 | ||
| Output Capacitance | COBO | 10 | pF | VCB = 10V, f = 1MHz | 4 | ||
| Transition Frequency | fT | 100 | MHz | VCE = 10V, IC = 50mA, f = 100MHz | 4 | ||
| Collector-Base Voltage | VCBO | 170 | V | TA = +25°C | 2 | ||
| Collector-Emitter Voltage | VCEO | 150 | V | TA = +25°C | 2 | ||
| Emitter-Base Voltage | VEBO | 7 | V | TA = +25°C | 2 | ||
| Continuous Collector Current | IC | 1 | A | TA = +25°C | 2 | ||
| Peak Pulse Current | ICM | 2 | A | TA = +25°C | 2 | ||
| Base Current | IB | 200 | mA | TA = +25°C | 2 | ||
| Power Dissipation (Note 6) | PD | 500 | mW | Note 6: 15mm × 15mm FR4 PCB, 1 oz Cu, still air | 2 | ||
| Operating and Storage Temperature Range | TJ, TSTG | -55 | 150 | °C | 2 | ||
| Thermal Resistance, Junction to Ambient (Note 6) | RθJA | 250 | °C/W | Note 6: 15mm × 15mm FR4 PCB, 1 oz Cu, still air | 2 | ||
| Thermal Resistance, Junction to Lead (Note 7) | RθJL | 197 | °C/W | Note 7: junction to solder point (end of collector lead) | 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 Plated Leads, Solderable per MIL-STD-202, Method 208 | 1 |
CAD (KiCad official)
- Symbol:
FMMT495TA - Footprint:
Package_TO_SOT_SMD:SOT-23 - 3D model: SOT-23 (KiCad packages3D, STEP)
- 3D model files:
fmmt495ta-etched.step/fmmt495ta-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);fmmt495ta.step/fmmt495ta.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Diodes Incorporated datasheet (7 pp, sha256
8e4c7c76035f56b5, 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).