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DTA123JCA
Public Made by Adomby adom
Changjing 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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README
markdownDTA123JCA
Changjing · Digital Transistors · SOT-23
DTA123JCA from Changjing, 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 | Base-side input of the built-in bias-resistor PNP transistor, rated VIN -12 V to +5 V (Maximum Ratings, page 2). |
| 2 | GND | power_in | Common ground reference for the input and output; the datasheet gives no separate electrical limit for this pin. |
| 3 | OUT | output | Collector-side output of the digital transistor, limited to an output current IO of -100 mA (Maximum Ratings, page 2). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Changjing |
| 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 |
|---|---|---|---|---|---|---|---|
| Supply voltage | VCC | -50 | V | 2 | |||
| Input voltage | VIN | -12 | 5 | V | 2 | ||
| Output current | IO | -100 | mA | 2 | |||
| Power dissipation (SOT-23 column) | PD | 200 | mW | 2 | |||
| Operation junction and storage temperature range | TJ,Tstg | -55 | 150 | ℃ | 2 | ||
| Input voltage (off) | VI(off) | -0.5 | V | VCC=-5V,IO=-100µA | 2 | ||
| Input voltage (on) | VI(on) | -1.1 | V | VO=-0.3V,IO=-5 mA | 2 | ||
| Output voltage (on) | VO(on) | -0.1 | -0.3 | V | IO/II=-5mA/-0.25mA | 2 | |
| Input current | II | -3.6 | mA | VI=-5V | 2 | ||
| Output current (off) | IO(off) | -0.5 | μA | VCC=-50V,VI=0 | 2 | ||
| DC current gain | GI | 80 | VO=-5V,IO=-10mA | 2 | |||
| Input resistance | R1 | 1.54 | 2.2 | 2.86 | kΩ | 2 | |
| Resistance ratio | R2/R1 | 17 | 21 | 26 | 2 | ||
| Transition frequency | fT | 250 | MHz | VO=-10V,IO=-5mA,f=100MHz | 2 |
CAD (KiCad official)
- Symbol:
DTA123JCA - Footprint:
Package_TO_SOT_SMD:SOT-23 - 3D model: SOT-23 (KiCad packages3D, STEP)
- 3D model files:
dta123jca-etched.step/dta123jca-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);dta123jca.step/dta123jca.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Changjing datasheet (15 pp, sha256
95c4ad09911b292e, retrieved 2026-10-17, 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).