component
4.0SMDJ24A
Public Made by Adomby adom
Littelfuse TVS, DO-214AB. 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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4.0SMDJ24A
Littelfuse · TVS · DO-214AB
4.0SMDJ24A from Littelfuse, in a DO-214AB. 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 | 1 | passive | Terminal 1 of an unpolarised fuse; either orientation. |
| 2 | 2 | passive | Terminal 2 of an unpolarised fuse; either orientation. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Littelfuse |
| Package | DO-214AB |
| Category | TVS/Fuse/Board Level Protection |
| 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 |
|---|---|---|---|---|---|---|---|
| Breakdown Voltage (min) | VBR | 26.7 | V | IT = 1 mA | 1 | ||
| Breakdown Voltage (max) | VBR | 29.5 | V | IT = 1 mA | 1 | ||
| Maximum Clamping Voltage 10/1000µs | VC | 38.9 | V | Ipp 10/1000µs | 1 | ||
| Maximum Clamping Voltage 8/20µs | VC | 51 | V | Ipp 8/20µs | 1 | ||
| Maximum Peak Pulse Current 10/1000µs | Ipp | 103 | A | 10/1000µs | 1 | ||
| Maximum Peak Pulse Current 8/20µs | Ipp | 650 | A | 8/20µs | 1 | ||
| Maximum Reverse Leakage Current | IR | 2 | µA | VR = 24.0 V | 1 | ||
| Peak Pulse Power Dissipation | PPPM | 4000 | W | TA=25°C, 10/1000µs waveform (Fig.2) | 1 | ||
| Power Dissipation on Infinite Heat Sink | PD | 6.5 | W | TL=50°C | 1 | ||
| Peak Forward Surge Current | IFSM | 300 | A | 8.3ms single half sine wave (Note 3) | 1 | ||
| Maximum Instantaneous Forward Voltage | VF | 3.5 | V | 100A, unidirectional only | 1 | ||
| Operating Temperature Range | TJ | -65 | 150 | °C | 1 | ||
| Storage Temperature Range | TSTG | -65 | 175 | °C | 1 | ||
| Typical Thermal Resistance Junction to Lead | RθJL | 15 | °C/W | 1 | |||
| Typical Thermal Resistance Junction to Ambient | RθJA | 75 | °C/W | 1 | |||
| VBR Temperature Coefficient (αT) | αT | 0.1 | % | VBR @ TJ = VBR@25°C x (1+αT x (TJ - 25)) | 1 |
Materials and finish
As the datasheet states them (page.json metadata.appearance; the 3D model's colours follow it).
| Part | Material | Colour / plating | Datasheet says | Page |
|---|---|---|---|---|
| contacts | copper | 2. Mounted on copper pad area of 0.31x0.31” (8.0 x 8.0mm) to each terminal. | 1 |
CAD (KiCad official)
- Symbol:
4.0SMDJ24A - Footprint:
Diode_SMD:D_SMC - 3D model: DO-214AB (KiCad packages3D, STEP)
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Littelfuse datasheet (5 pp, sha256
6a32f6d69c3ac039, retrieved 2026-10-29, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins, primarytwo-terminal 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).
# 4.0SMDJ24A
**Littelfuse** · TVS · DO-214AB
4.0SMDJ24A from Littelfuse, in a DO-214AB. 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 | 1 | passive | Terminal 1 of an unpolarised fuse; either orientation. |
| 2 | 2 | passive | Terminal 2 of an unpolarised fuse; either orientation. |
## Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Littelfuse |
| Package | DO-214AB |
| Category | TVS/Fuse/Board Level Protection |
| 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 |
|---|---|---|---|---|---|---|---|
| Breakdown Voltage (min) | VBR | 26.7 | | | V | IT = 1 mA | 1 |
| Breakdown Voltage (max) | VBR | | | 29.5 | V | IT = 1 mA | 1 |
| Maximum Clamping Voltage 10/1000µs | VC | | | 38.9 | V | Ipp 10/1000µs | 1 |
| Maximum Clamping Voltage 8/20µs | VC | | | 51 | V | Ipp 8/20µs | 1 |
| Maximum Peak Pulse Current 10/1000µs | Ipp | | | 103 | A | 10/1000µs | 1 |
| Maximum Peak Pulse Current 8/20µs | Ipp | | | 650 | A | 8/20µs | 1 |
| Maximum Reverse Leakage Current | IR | | | 2 | µA | VR = 24.0 V | 1 |
| Peak Pulse Power Dissipation | PPPM | | | 4000 | W | TA=25°C, 10/1000µs waveform (Fig.2) | 1 |
| Power Dissipation on Infinite Heat Sink | PD | | | 6.5 | W | TL=50°C | 1 |
| Peak Forward Surge Current | IFSM | | | 300 | A | 8.3ms single half sine wave (Note 3) | 1 |
| Maximum Instantaneous Forward Voltage | VF | | | 3.5 | V | 100A, unidirectional only | 1 |
| Operating Temperature Range | TJ | -65 | | 150 | °C | | 1 |
| Storage Temperature Range | TSTG | -65 | | 175 | °C | | 1 |
| Typical Thermal Resistance Junction to Lead | RθJL | | 15 | | °C/W | | 1 |
| Typical Thermal Resistance Junction to Ambient | RθJA | | 75 | | °C/W | | 1 |
| VBR Temperature Coefficient (αT) | αT | | 0.1 | | % | VBR @ TJ = VBR@25°C x (1+αT x (TJ - 25)) | 1 |
## Materials and finish
As the datasheet states them (page.json `metadata.appearance`; the 3D model's colours follow it).
| Part | Material | Colour / plating | Datasheet says | Page |
|---|---|---|---|---|
| contacts | copper | | 2. Mounted on copper pad area of 0.31x0.31” (8.0 x 8.0mm) to each terminal. | 1 |
## CAD (KiCad official)
- Symbol: `4.0SMDJ24A`
- Footprint: `Diode_SMD:D_SMC`
- 3D model: DO-214AB (KiCad packages3D, STEP)
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [Littelfuse datasheet](docs/4-0smdj24a-datasheet.pdf) (5 pp, sha256 `6a32f6d69c3ac039`, retrieved 2026-10-29, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins`, primary `two-terminal 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/4-0smdj24a-datasheet.pdf)