# EMZ1T2R

**ROHM Semicon** · Bipolar (BJT) · SOT-563

EMZ1T2R from ROHM Semicon, in a SOT-563. 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 | E1 | passive | Emitter of Tr1 (NPN, 2SC241ZK chip); VEBO 7 V, IC 150 mA max. |
| 2 | B1 | passive | Base of Tr1 (NPN); hFE 120 to 560 at VCE=6V, IC=1mA. |
| 3 | C2 | passive | Collector of Tr2 (PNP, 2SA1037AK chip); VCBO -60 V, VCEO -50 V, IC -150 mA max. |
| 4 | E2 | passive | Emitter of Tr2 (PNP); VEBO -6 V max. |
| 5 | B2 | passive | Base of Tr2 (PNP); hFE 120 to 560 at VCE=-6V, IC=-1mA. |
| 6 | C1 | passive | Collector of Tr1 (NPN); VCBO 60 V, VCEO 50 V, IC 150 mA max. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | ROHM Semicon |
| Package | SOT-563 |
| Category | Transistors/Thyristors |
| Pins | 6 |

## 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 Tr1 (NPN) | BVCBO | 60 |  |  | V | IC=50µA | 2 |
| Collector-emitter breakdown voltage Tr1 (NPN) | BVCEO | 50 |  |  | V | IC=1mA | 2 |
| Emitter-base breakdown voltage Tr1 (NPN) | BVEBO | 7 |  |  | V | IE=50µA | 2 |
| Collector cutoff current Tr1 (NPN) | ICBO |  |  | 0.1 | µA | VCB=60V | 2 |
| Emitter cutoff current Tr1 (NPN) | IEBO |  |  | 0.1 | µA | VEB=7V | 2 |
| DC current transfer ratio Tr1 (NPN) | hFE | 120 |  | 560 |  | VCE=6V, IC=1mA | 2 |
| Collector-emitter saturation voltage Tr1 (NPN) | VCE(sat) |  |  | 0.4 | V | IC/IB=50mA/5mA | 2 |
| Output capacitance Tr1 (NPN) | Cob |  | 2 | 3.5 | PF | VCB=12V, IE=0A, f=1MHz | 2 |
| Collector-base breakdown voltage Tr2 (PNP) | BVCBO | -60 |  |  | V | IC=−50µA | 2 |
| Collector-emitter breakdown voltage Tr2 (PNP) | BVCEO | -50 |  |  | V | IC=−1mA | 2 |
| Emitter-base breakdown voltage Tr2 (PNP) | BVEBO | -6 |  |  | V | IE=−50µA | 2 |
| Collector cutoff current Tr2 (PNP) | ICBO |  |  | -0.1 | µA | VCB=−60V | 2 |
| Emitter cutoff current Tr2 (PNP) | IEBO |  |  | -0.1 | µA | VEB=−6V | 2 |
| DC current transfer ratio Tr2 (PNP) | hFE | 120 |  | 560 |  | VCE=−6V, IC=−1mA | 2 |
| Collector-emitter saturation voltage Tr2 (PNP) | VCE(sat) |  |  | -0.5 | V | IC/IB=−50mA/−5mA | 2 |
| Output capacitance Tr2 (PNP) | Cob |  | 4 | 5 | PF | VCB=−12V, IE=0A, f=1MHz | 2 |
| Collector-base voltage Tr1 (NPN) | VCBO |  |  | 60 | V | Ta=25˚C | 1 |
| Collector-base voltage Tr2 (PNP) | VCBO | -60 |  |  | V | Ta=25˚C | 1 |
| Collector-emitter voltage Tr1 (NPN) | VCEO |  |  | 50 | V | Ta=25˚C | 1 |
| Collector-emitter voltage Tr2 (PNP) | VCEO | -50 |  |  | V | Ta=25˚C | 1 |
| Emitter-base voltage Tr1 (NPN) | VEBO |  |  | 7 | V | Ta=25˚C | 1 |
| Emitter-base voltage Tr2 (PNP) | VEBO | -6 |  |  | V | Ta=25˚C | 1 |
| Collector current Tr1 (NPN) | IC |  |  | 150 | mA | Ta=25˚C | 1 |
| Collector current Tr2 (PNP) | IC | -150 |  |  | mA | Ta=25˚C | 1 |
| Power dissipation (EMZ1, total) | PC |  |  | 150 | mW | EMZ1 (TOTAL), Ta=25˚C | 1 |
| Power dissipation (per element, footnote ∗1) | PC |  |  | 120 | mW | per element, EMZ1, Ta=25˚C | 1 |
| Junction temperature | Tj |  |  | 150 | ˚C |  | 1 |
| Storage temperature | Tstg | -55 |  | 150 | ˚C |  | 1 |

## CAD (KiCad official)

- Symbol: `EMZ1T2R`
- Footprint: `Package_TO_SOT_SMD:SOT-563`
- 3D model: SOT-563 (KiCad packages3D, STEP)
- 3D model files: `emz1t2r-etched.step` / `emz1t2r-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `emz1t2r.step` / `emz1t2r.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [ROHM Semicon datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588912886010302464) (4 pp, sha256 `3eeb52a915b97c5c`, retrieved 2026-10-09, 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/emz1t2r-datasheet.pdf)