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KRA226S-RTK
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KEC Semicon Digital Transistors, SOT-23. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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KRA226S-RTK
KEC Semicon · Digital Transistors · SOT-23
KRA226S-RTK from KEC Semicon, 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 | COMMON (EMITTER) | passive | Common emitter terminal of the PNP transistor with built-in bias resistors; the datasheet gives no separate electrical limit for this pin beyond the absolute maximum ratings (output current -800 mA, power dissipation 200 mW). |
| 2 | IN (BASE) | input | Input (base) terminal, with built-in input resistor R1 = 2.2 kΩ for KRA226S; the KRA226S input voltage rating is -12 V to 6 V. |
| 3 | OUT (COLLECTOR) | output | Output (collector) terminal, rated for an output voltage of -50 V and an output current of -800 mA. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | KEC Semicon |
| 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 |
|---|---|---|---|---|---|---|---|
| Output Cut-off Current | IO(OFF) | -10 | µA | VO=-30V, VI=0 | 2 | ||
| DC Current Gain | GI | 56 | VO=-5V, IO=-50mA | 2 | |||
| Output Voltage | VO(ON) | -0.1 | -0.3 | V | IO=-50mA, II=-2.5mA | 2 | |
| Input Voltage (ON) | VI(ON) | -2 | V | VO=-0.3V, IO=-20mA | 2 | ||
| Input Voltage (OFF) | VI(OFF) | -0.3 | V | VO=-5V, IO=-0.1mA | 2 | ||
| Input Current | II | -3.6 | mA | VI=-5V | 2 | ||
| Input Resistor R1 | R1 | 1.54 | 2.2 | 2.86 | k | 2 | |
| Output Voltage (absolute maximum) | VO | -50 | V | 1 | |||
| Input Voltage (absolute maximum) | VI | -12 | 6 | V | 1 | ||
| Output Current | IO | -800 | mA | 1 | |||
| Power Dissipation | PD | 200 | mW | 1 | |||
| Junction Temperature | Tj | 150 | °C | 1 | |||
| Storage Temperature Range | Tstg | -55 | 150 | °C | 1 | ||
| Transition Frequency | fT | 200 | MHz | VO=-10V, IO=-5mA, f=100MHz | 2 | ||
| Bias Resistor R2 (nominal, equivalent circuit) | R2 | 10 | k | 1 |
CAD (KiCad official)
- Symbol:
KRA226S-RTK - Footprint:
Package_TO_SOT_SMD:SOT-23 - 3D model: SOT-23 (KiCad packages3D, STEP)
- 3D model files:
kra226s-rtk-etched.step/kra226s-rtk-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);kra226s-rtk.step/kra226s-rtk.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: KEC Semicon datasheet (5 pp, sha256
aec7f03e0eeca036, retrieved 2026-10-19, 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).
# KRA226S-RTK
**KEC Semicon** · Digital Transistors · SOT-23
KRA226S-RTK from KEC Semicon, 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 | COMMON (EMITTER) | passive | Common emitter terminal of the PNP transistor with built-in bias resistors; the datasheet gives no separate electrical limit for this pin beyond the absolute maximum ratings (output current -800 mA, power dissipation 200 mW). |
| 2 | IN (BASE) | input | Input (base) terminal, with built-in input resistor R1 = 2.2 kΩ for KRA226S; the KRA226S input voltage rating is -12 V to 6 V. |
| 3 | OUT (COLLECTOR) | output | Output (collector) terminal, rated for an output voltage of -50 V and an output current of -800 mA. |
## Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | KEC Semicon |
| 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 |
|---|---|---|---|---|---|---|---|
| Output Cut-off Current | IO(OFF) | | | -10 | µA | VO=-30V, VI=0 | 2 |
| DC Current Gain | GI | 56 | | | | VO=-5V, IO=-50mA | 2 |
| Output Voltage | VO(ON) | | -0.1 | -0.3 | V | IO=-50mA, II=-2.5mA | 2 |
| Input Voltage (ON) | VI(ON) | | | -2 | V | VO=-0.3V, IO=-20mA | 2 |
| Input Voltage (OFF) | VI(OFF) | -0.3 | | | V | VO=-5V, IO=-0.1mA | 2 |
| Input Current | II | | | -3.6 | mA | VI=-5V | 2 |
| Input Resistor R1 | R1 | 1.54 | 2.2 | 2.86 | k | | 2 |
| Output Voltage (absolute maximum) | VO | -50 | | | V | | 1 |
| Input Voltage (absolute maximum) | VI | -12 | | 6 | V | | 1 |
| Output Current | IO | -800 | | | mA | | 1 |
| Power Dissipation | PD | | | 200 | mW | | 1 |
| Junction Temperature | Tj | | | 150 | °C | | 1 |
| Storage Temperature Range | Tstg | -55 | | 150 | °C | | 1 |
| Transition Frequency | fT | | 200 | | MHz | VO=-10V, IO=-5mA, f=100MHz | 2 |
| Bias Resistor R2 (nominal, equivalent circuit) | R2 | | 10 | | k | | 1 |
## CAD (KiCad official)
- Symbol: `KRA226S-RTK`
- Footprint: `Package_TO_SOT_SMD:SOT-23`
- 3D model: SOT-23 (KiCad packages3D, STEP)
- 3D model files: `kra226s-rtk-etched.step` / `kra226s-rtk-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `kra226s-rtk.step` / `kra226s-rtk.glb` are the bare package body.
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [KEC Semicon datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8586187716229017600) (5 pp, sha256 `aec7f03e0eeca036`, retrieved 2026-10-19, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-5-5` (text), consensus `claude-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).
[Datasheet PDF](docs/kra226s-rtk-datasheet.pdf)