component
DDTA144ECAQ-13-F
Public Made by Adomby adom
Diodes Incorporated Digital 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
markdownDDTA144ECAQ-13-F
Diodes Incorporated · Digital Transistors · SOT-23
DDTA144ECAQ-13-F 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 | IN | input | Input terminal to the built-in R1 bias resistor (47 kΩ nominal for DDTA144ECA); input voltage is limited to +10 V to -40 V measured from pin 1 to pin 2. |
| 2 | GND | power_in | Common ground reference for the device; the supply voltage (pin 3 to pin 2) and input voltage (pin 1 to pin 2) are both specified relative to this pin. |
| 3 | OUT | output | Output (collector) terminal; supply voltage VCC is rated -50 V maximum from pin 3 to pin 2, and output current IO is limited to -30 mA for DDTA144ECA. |
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 |
|---|---|---|---|---|---|---|---|
| Input resistor R1 nominal (R1 = R2 NOM) | R1 | 47 | kΩ | NOM, DDTA144ECA | 1 | ||
| Input resistor tolerance | R1 | -30 | 30 | % | 2 | ||
| Resistance ratio tolerance | R2/R1 | 0.8 | 1 | 1.2 | % | 2 | |
| Input voltage (off) | Vl(off) | -0.5 | -1.1 | V | VCC = -5V, IO = -100A | 2 | |
| Input voltage (on) | Vl(on) | -1.9 | -3 | V | VO = -0.3V, IO = -2mA, DDTA144ECA | 2 | |
| Output voltage (on) | VO(on) | -0.1 | -0.3 | V | IO/Il = -10mA/-0.5mA, DDTA144ECA | 2 | |
| Input current | Il | -0.18 | mA | VI = -5V, DDTA144ECA | 2 | ||
| Output current (off) | IO(off) | -0.5 | A | VCC = -50V, VI = 0V | 2 | ||
| DC current gain | Gl | 68 | VO = -5V, IO = -5mA, DDTA144ECA | 2 | |||
| Gain-bandwidth product (transistor, reference only) | fT | 250 | MHz | VCE = -10V, IE = -5mA, f = 100MHz | 2 | ||
| Supply voltage | VCC | -50 | V | Pin (3) to (2) | 2 | ||
| Input voltage | VIN | -40 | 10 | V | Pin (1) to (2), DDTA144ECA | 2 | |
| Output current | IO | -30 | mA | DDTA144ECA | 2 | ||
| Output current IC (max) | IC | -100 | mA | 2 | |||
| Power dissipation | PD | 200 | mW | Mounted on FR-4 PC board with minimum recommended pad layout (Note 7) | 2 | ||
| Thermal resistance, junction to ambient | RJA | 625 | °C/W | Mounted on FR-4 PC board with minimum recommended pad layout (Note 7) | 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:
DDTA144ECAQ-13-F - Footprint:
Package_TO_SOT_SMD:SOT-23 - 3D model: SOT-23 (KiCad packages3D, STEP)
- 3D model files:
ddta144ecaq-13-f-etched.step/ddta144ecaq-13-f-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);ddta144ecaq-13-f.step/ddta144ecaq-13-f.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Diodes Incorporated datasheet (5 pp, sha256
238b94f121ac7005, retrieved 2026-10-18, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-5-5(text), consensusclaude-sonnet-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).