component
RD51FM
Public Made by Adomby adom
EIC Semicon Zener Diodes, DO-214AC(SMA). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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RD51FM
EIC Semicon · Zener Diodes · DO-214AC(SMA)
RD51FM from EIC Semicon, in a DO-214AC(SMA). 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 | K | passive | Cathode, the end marked by the color band; the Zener voltage for RD51FM is 48.0 to 54.0 V at IZ = 2 mA. |
| 2 | A | passive | Anode, the end without the color band; forward current is rated up to 200 mA (IF) and power dissipation 1.0 W. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | EIC Semicon |
| Package | DO-214AC(SMA) |
| Category | Diodes |
| Pins | 2 |
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Zener Voltage | VZ | 48 | 54 | V | IZ = 2 mA, Ta = 25 °C, pulse 40 ms | 2 | |
| Dynamic Impedance | ZZ | 220 | Ω | IZ = 2 mA, Ta = 25 °C | 2 | ||
| Reverse Current | IR | 5 | μA | VR = 39 V, Ta = 25 °C | 2 | ||
| Power Dissipation | PD | 1 | W | See Fig. 1, 25 °C ambient | 1 | ||
| Forward Current | IF | 200 | mA | 25 °C ambient | 1 | ||
| Junction Temperature | TJ | 150 | °C | 1 | |||
| Storage Temperature Range | TSTG | -55 | 150 | °C | 1 |
CAD (KiCad official)
- Symbol:
RD51FM - Footprint:
Diode_SMD:D_SMA - 3D model: DO-214AC(SMA) (KiCad packages3D, STEP)
- 3D model files:
rd51fm-etched.step/rd51fm-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);rd51fm.step/rd51fm.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: EIC Semicon datasheet (6 pp, sha256
d3f59ae4ba2ad9ba, retrieved 2026-10-22, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-sonnet-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).
# RD51FM
**EIC Semicon** · Zener Diodes · DO-214AC(SMA)
RD51FM from EIC Semicon, in a DO-214AC(SMA). 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 | K | passive | Cathode, the end marked by the color band; the Zener voltage for RD51FM is 48.0 to 54.0 V at IZ = 2 mA. |
| 2 | A | passive | Anode, the end without the color band; forward current is rated up to 200 mA (IF) and power dissipation 1.0 W. |
## Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | EIC Semicon |
| Package | DO-214AC(SMA) |
| Category | Diodes |
| Pins | 2 |
## Electrical characteristics
Limits as printed in the datasheet (page.json `metadata.characteristics` carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Zener Voltage | VZ | 48 | | 54 | V | IZ = 2 mA, Ta = 25 °C, pulse 40 ms | 2 |
| Dynamic Impedance | ZZ | | | 220 | Ω | IZ = 2 mA, Ta = 25 °C | 2 |
| Reverse Current | IR | | | 5 | μA | VR = 39 V, Ta = 25 °C | 2 |
| Power Dissipation | PD | | | 1 | W | See Fig. 1, 25 °C ambient | 1 |
| Forward Current | IF | | | 200 | mA | 25 °C ambient | 1 |
| Junction Temperature | TJ | | | 150 | °C | | 1 |
| Storage Temperature Range | TSTG | -55 | | 150 | °C | | 1 |
## CAD (KiCad official)
- Symbol: `RD51FM`
- Footprint: `Diode_SMD:D_SMA`
- 3D model: DO-214AC(SMA) (KiCad packages3D, STEP)
- 3D model files: `rd51fm-etched.step` / `rd51fm-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `rd51fm.step` / `rd51fm.glb` are the bare package body.
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [EIC Semicon datasheet](docs/rd51fm-datasheet.pdf) (6 pp, sha256 `d3f59ae4ba2ad9ba`, retrieved 2026-10-22, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-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/rd51fm-datasheet.pdf)