component
1N4937-E3
Public Made by Adomby adom
Vishay Intertech Switching Diodes, DO-41. Unpolarised two-terminal part: the datasheet prints no pin numbers, so pins 1 and 2 follow the library convention, KiCad symbol/footprint/3D.
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1N4937-E3
Vishay Intertech · Switching Diodes · DO-41
1N4937-E3 from Vishay Intertech, in a DO-41. 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 banded/marked end per the datasheet; pad 1 of the KiCad diode footprint. |
| 2 | A | passive | Anode. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Vishay Intertech |
| Package | DO-41 |
| 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 |
|---|---|---|---|---|---|---|---|
| Maximum repetitive peak reverse voltage | VRRM | 600 | V | 1 | |||
| Maximum RMS voltage | VRMS | 420 | V | 1 | |||
| Maximum DC blocking voltage | VDC | 600 | V | 1 | |||
| Maximum average forward rectified current | IF(AV) | 1 | A | 0.375" (9.5 mm) lead length at TA = 75 °C | 1 | ||
| Peak forward surge current | IFSM | 30 | A | 8.3 ms single half sine-wave superimposed on rated load | 1 | ||
| Maximum reverse recovery current | IRM | 2 | A | 1 | |||
| Operating junction and storage temperature range | TJ, TSTG | -50 | 150 | °C | 1 | ||
| Maximum instantaneous forward voltage | VF | 1.2 | V | 1.0 A | 1 | ||
| Maximum DC reverse current at rated DC blocking voltage | IR | 5 | μA | at rated DC blocking voltage, TA = 25 °C | 1 | ||
| Maximum DC reverse current at rated DC blocking voltage | IR | 100 | μA | at rated DC blocking voltage, TA = 100 °C | 1 | ||
| Maximum reverse recovery time | trr | 200 | ns | IF = 1.0 A, VR = 30 V, dI/dt = 50 A/μs, Irr = 10 % IRM | 1 | ||
| Typical junction capacitance | CJ | 12 | pF | 4.0 V, 1 MHz | 1 | ||
| Typical thermal resistance, junction to ambient | RJA | 55 | °C/W | P.C.B. mounted, 0.375" (9.5 mm) lead length (note 1) | 2 | ||
| Typical thermal resistance, junction to lead | RJL | 25 | P.C.B. mounted, 0.375" (9.5 mm) lead length (note 1) | 2 |
CAD (KiCad official)
- Symbol:
1N4937-E3 - Footprint:
Diode_THT:D_DO-41_SOD81_P10.16mm_Horizontal - 3D model: DO-41 (KiCad packages3D, STEP)
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Vishay Intertech datasheet (4 pp, sha256
5a0234c4bcdbc789, retrieved 2026-10-15, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins, primarycathode-band convention(convention), consensusoff(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).
# 1N4937-E3
**Vishay Intertech** · Switching Diodes · DO-41
1N4937-E3 from Vishay Intertech, in a DO-41. 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 banded/marked end per the datasheet; pad 1 of the KiCad diode footprint. |
| 2 | A | passive | Anode. |
## Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Vishay Intertech |
| Package | DO-41 |
| 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 |
|---|---|---|---|---|---|---|---|
| Maximum repetitive peak reverse voltage | VRRM | | | 600 | V | | 1 |
| Maximum RMS voltage | VRMS | | | 420 | V | | 1 |
| Maximum DC blocking voltage | VDC | | | 600 | V | | 1 |
| Maximum average forward rectified current | IF(AV) | | | 1 | A | 0.375" (9.5 mm) lead length at TA = 75 °C | 1 |
| Peak forward surge current | IFSM | | | 30 | A | 8.3 ms single half sine-wave superimposed on rated load | 1 |
| Maximum reverse recovery current | IRM | | | 2 | A | | 1 |
| Operating junction and storage temperature range | TJ, TSTG | -50 | | 150 | °C | | 1 |
| Maximum instantaneous forward voltage | VF | | | 1.2 | V | 1.0 A | 1 |
| Maximum DC reverse current at rated DC blocking voltage | IR | | | 5 | μA | at rated DC blocking voltage, TA = 25 °C | 1 |
| Maximum DC reverse current at rated DC blocking voltage | IR | | | 100 | μA | at rated DC blocking voltage, TA = 100 °C | 1 |
| Maximum reverse recovery time | trr | | | 200 | ns | IF = 1.0 A, VR = 30 V, dI/dt = 50 A/μs, Irr = 10 % IRM | 1 |
| Typical junction capacitance | CJ | | 12 | | pF | 4.0 V, 1 MHz | 1 |
| Typical thermal resistance, junction to ambient | RJA | | 55 | | °C/W | P.C.B. mounted, 0.375" (9.5 mm) lead length (note 1) | 2 |
| Typical thermal resistance, junction to lead | RJL | | 25 | | | P.C.B. mounted, 0.375" (9.5 mm) lead length (note 1) | 2 |
## CAD (KiCad official)
- Symbol: `1N4937-E3`
- Footprint: `Diode_THT:D_DO-41_SOD81_P10.16mm_Horizontal`
- 3D model: DO-41 (KiCad packages3D, STEP)
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [Vishay Intertech datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588892667153690624) (4 pp, sha256 `5a0234c4bcdbc789`, retrieved 2026-10-15, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins`, primary `cathode-band convention` (convention), consensus `off` (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/1n4937-e3-datasheet.pdf)