component
FMMT734TA
Public Made by Adomby adom
Diodes Incorporated Darlington Transistors, 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
markdownFMMT734TA
Diodes Incorporated · Darlington Transistors · SOT-23
FMMT734TA 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 of the PNP Darlington transistor (bottom-left pin in top view); hFE > 20k at IC = -100mA, VCE = -5V, and VEBO is -12V max. |
| 2 | E | passive | Emitter of the PNP Darlington transistor (bottom-right pin in top view); continuous collector current is limited to -800mA and peak pulse current to -5A. |
| 3 | C | passive | Collector of the PNP Darlington transistor (single top pin in top view); VCEO and VCBO are both rated -100V. |
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-Base Breakdown Voltage | BVCBO | -100 | -130 | V | IC = -100µA | 4 | |
| Collector-Emitter Breakdown Voltage | BVCEO | -100 | -116 | V | IC = -5mA | 4 | |
| Emitter-Base Breakdown Voltage | BVEBO | -12 | -17 | V | IE = -100µA | 4 | |
| Collector Cutoff Current | ICBO | -10 | nA | VCB = -80V | 4 | ||
| Collector Cutoff Current | ICES | -200 | nA | VCES = -80V | 4 | ||
| Emitter Cutoff Current | IEBO | -10 | nA | VEB = -7V | 4 | ||
| Base-Emitter Saturation Voltage | VBE(sat) | -1.6 | -1.75 | V | IC = -1A, IB = -5mA | 4 | |
| Base-Emitter Turn-On Voltage | VBE(on) | -1.3 | -1.75 | V | IC= -1A, VCE=-5V | 4 | |
| Output Capacitance | Cobo | 14 | 25 | pF | VCB = -10V, f = 1MHz | 4 | |
| Collector-Base Voltage | VCBO | -100 | V | 2 | |||
| Collector-Emitter Voltage | VCEO | -100 | V | 2 | |||
| Emitter-Base Voltage | VEBO | -12 | V | 2 | |||
| Continuous Collector Current | IC | -800 | mA | 2 | |||
| Peak Pulse Current | ICM | -5 | A | 2 | |||
| Electrostatic Discharge - Human Body Model | ESD HBM | 2000 | V | JEDEC class 1C | 2 | ||
| Electrostatic Discharge - Machine Model | ESD MM | 200 | V | JEDEC class A | 2 | ||
| Power Dissipation | PD | 625 | mW | Note 5: surface mounted on 25mm X 25mm FR-4 PCB, 1 oz copper, still air, steady state | 2 | ||
| Power Dissipation | PD | 806 | mW | Note 6: same as note 5, t ≤ 5 sec | 2 | ||
| Thermal Resistance, Junction to Ambient | RθJA | 200 | C/W | Note 5: steady state, still air | 2 | ||
| Thermal Resistance, Junction to Ambient | RθJA | 155 | C/W | Note 6: t ≤ 5 sec | 2 | ||
| Thermal Resistance, Junction to Leads | RθJL | 194 | C/W | Note 7: junction to solder-point (end of collector lead) | 2 | ||
| Operating and Storage Temperature Range | TJ, TSTG | -55 | 150 | C | 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:
FMMT734TA - Footprint:
Package_TO_SOT_SMD:SOT-23 - 3D model: SOT-23 (KiCad packages3D, STEP)
- 3D model files:
fmmt734ta-etched.step/fmmt734ta-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);fmmt734ta.step/fmmt734ta.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Diodes Incorporated datasheet (7 pp, sha256
6c5b3e00bec125b5, retrieved 2026-10-19, 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).