# PBSS304PX

**Slkor SLKORMICRO Elec** · Bipolar (BJT) · SOT-89

PBSS304PX from Slkor SLKORMICRO Elec, in a SOT-89. 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; drive terminal of the PNP transistor, with VEBO rated at -7 V. |
| 2 | C | passive | Collector; the middle lead is also connected to the exposed collector tab, with IC of -4.3 A continuous and VCEO of -60 V. |
| 3 | E | passive | Emitter of the PNP transistor; VEBO is rated at -7 V. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Slkor SLKORMICRO Elec |
| Package | SOT-89 |
| 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 | -120 |  | V | IC = -100µA | 3 |
| Collector-Emitter Breakdown Voltage (RB ≤ 1kΩ) | BVCER | -100 | -120 |  | V | IC = -1µA, RB ≤ 1kΩ | 3 |
| Collector-Emitter Breakdown Voltage | BVCEO | -60 | -80 |  | V | IC = -10mA | 3 |
| Emitter-Base Breakdown Voltage | BVEBO | -7 | -8.1 |  | V | IE = -100µA | 3 |
| Collector Cutoff Current | ICBO |  |  | -20 | nA | VCB = -80V | 3 |
| Collector Cutoff Current | ICBO |  |  | -500 | nA | VCB = -80V, TA = +100°C | 3 |
| Collector Cutoff Current (R ≤ 1kΩ) | ICER |  |  | -20 | nA | VCB = -80V, R ≤ 1kΩ | 3 |
| Collector Cutoff Current (R ≤ 1kΩ) | ICER |  |  | -500 | nA | VCB = -80V, R ≤ 1kΩ, TA = +100°C | 3 |
| Emitter Cutoff Current | IEBO |  |  | -10 | nA | VEB = -6V | 3 |
| DC Current Transfer Ratio | hFE | 100 | 250 | 300 |  | IC = -10mA, VCE = -1V | 3 |
| DC Current Transfer Ratio | hFE | 100 | 200 |  |  | IC = -2A, VCE = -1V | 3 |
| DC Current Transfer Ratio | hFE | 45 | 90 |  |  | IC = -5A, VCE = -1V | 3 |
| DC Current Transfer Ratio | hFE | 10 | 25 |  |  | IC = -10A, VCE = -1V | 3 |
| Collector-Emitter Saturation Voltage | VCE(sat) |  | -14 | -20 | mV | IC = -100mA, IB = -10mA | 3 |
| Collector-Emitter Saturation Voltage | VCE(sat) |  | -50 | -65 | mV | IC = -1A, IB = -100mA | 3 |
| Collector-Emitter Saturation Voltage | VCE(sat) |  | -75 | -110 | mV | IC = -2A, IB = -200mA | 3 |
| Collector-Emitter Saturation Voltage | VCE(sat) |  | -160 | -215 | mV | IC = -5A, IB = -500mA | 3 |
| Base-Emitter Saturation Voltage | VBE(sat) |  | -950 | -1050 | mV | IC = -5A, IB = -500mA | 3 |
| Base-Emitter Turn-on Voltage | VBE(on) |  | -840 | -950 | mV | IC = -5A, VCE = -1V | 3 |
| Collector-Base Voltage | VCBO |  |  | -100 | V |  | 1 |
| Collector-Emitter Voltage | VCEO |  |  | -60 | V |  | 1 |
| Emitter-Base Voltage | VEBO |  |  | -7 | V |  | 1 |
| Continuous Collector Current | IC |  |  | -4.3 | A |  | 1 |
| Peak Pulse Current | ICM |  |  | -15 | A |  | 1 |
| Operating and Storage Temperature Range | TJ,TSTG | -55 |  | 150 | °C |  | 1 |
| Power Dissipation | PD |  |  | 1.5 | W | Note 6: 25mm x 25mm x 1.6mm FR4 PCB, 1oz Cu, still air, TA = +25°C | 1 |
| Power Dissipation | PD |  |  | 2.1 | W | Note 7: 50mm x 50mm PCB, 1oz Cu, TA = +25°C | 1 |
| Thermal Resistance, Junction to Ambient | RθJA |  |  | 83 | °C/W | Note 6: 25mm x 25mm x 1.6mm FR4 PCB, 1oz Cu, still air | 1 |
| Thermal Resistance, Junction to Ambient | RθJA |  |  | 60 | °C/W | Note 7: 50mm x 50mm PCB, 1oz Cu | 1 |
| Thermal Resistance, Junction to Leads | RθJL |  |  | 3.23 | °C/W | Note 8: junction to solder-point on exposed collector pad | 1 |

## CAD (KiCad official)

- Symbol: `PBSS304PX`
- Footprint: `Package_TO_SOT_SMD:SOT-89-3`
- 3D model: SOT-89 (KiCad packages3D, STEP)
- 3D model files: `pbss304px-etched.step` / `pbss304px-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `pbss304px.step` / `pbss304px.glb` are the bare package body.

## Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

- **Datasheet:** [Slkor SLKORMICRO Elec datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8589836317690527744) (5 pp, sha256 `f2da2bc9403b0dd0`, retrieved 2026-10-18, tier: lcsc)
- **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/pbss304px-datasheet.pdf)