component
3DD4242DM-126
Public Made by Adomby adom
Jilin Sino-Microelectronics Bipolar Transistors - BJT, TO-126. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
main
3DD4242DM-126
Jilin Sino-Microelectronics · Bipolar Transistors - BJT · TO-126
3DD4242DM-126 from Jilin Sino-Microelectronics, in a TO-126. 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 | passive | Base of the NPN transistor; the emitter-base voltage VEBO is limited to 9 V. |
| 2 | C | passive | Collector; VCEO is 400 V (IB=0) and VCES is 700 V (VBE=0), with DC collector current IC up to 1.5 A and pulse ICP up to 3.0 A. |
| 3 | E | passive | Emitter of the NPN transistor; VEBO is limited to 9 V. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Jilin Sino-Microelectronics |
| Package | TO-126 |
| Category | Transistors |
| Pins | 3 |
CAD (KiCad official)
- Symbol:
3DD4242DM-126 - Footprint:
Package_TO_SOT_THT:TO-126-3_Vertical - 3D model: TO-126 (KiCad packages3D, STEP)
- 3D model files:
3dd4242dm-126-etched.step/3dd4242dm-126-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);3dd4242dm-126.step/3dd4242dm-126.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Jilin Sino-Microelectronics datasheet (9 pp, sha256
d1634e2289b1e56e, retrieved 2026-10-28, tier: lcsc) - Datasheet language: Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
- 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).
# 3DD4242DM-126
**Jilin Sino-Microelectronics** · Bipolar Transistors - BJT · TO-126
3DD4242DM-126 from Jilin Sino-Microelectronics, in a TO-126. 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 | passive | Base of the NPN transistor; the emitter-base voltage VEBO is limited to 9 V. |
| 2 | C | passive | Collector; VCEO is 400 V (IB=0) and VCES is 700 V (VBE=0), with DC collector current IC up to 1.5 A and pulse ICP up to 3.0 A. |
| 3 | E | passive | Emitter of the NPN transistor; VEBO is limited to 9 V. |
## Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Jilin Sino-Microelectronics |
| Package | TO-126 |
| Category | Transistors |
| Pins | 3 |
## CAD (KiCad official)
- Symbol: `3DD4242DM-126`
- Footprint: `Package_TO_SOT_THT:TO-126-3_Vertical`
- 3D model: TO-126 (KiCad packages3D, STEP)
- 3D model files: `3dd4242dm-126-etched.step` / `3dd4242dm-126-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `3dd4242dm-126.step` / `3dd4242dm-126.glb` are the bare package body.
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [Jilin Sino-Microelectronics datasheet](docs/3dd4242dm-126-datasheet.pdf) (9 pp, sha256 `d1634e2289b1e56e`, retrieved 2026-10-28, tier: lcsc)
- **Datasheet language:** Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-5-5` (text+vision), consensus `claude-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).
[Datasheet PDF](docs/3dd4242dm-126-datasheet.pdf)