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SMBJ5340BE3
Public Made by Adomby adom
Microchip Tech Zener Diodes, SMBJ(DO-214AA). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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Contents
README
markdownSMBJ5340BE3
Microchip Tech · Zener Diodes · SMBJ(DO-214AA)
SMBJ5340BE3 from Microchip Tech, in a SMBJ(DO-214AA). 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, indicated by the band; the diode is operated with the banded end positive with respect to the opposite end (Zener breakdown operation). |
| 2 | A | passive | Anode, the end opposite the cathode band, which is negative with respect to the banded end in normal Zener operation. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Microchip Tech |
| Package | SMBJ(DO-214AA) |
| 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 tolerance (B suffix) | VZ | -5 | 5 | % | Breakdown voltage tolerance B = +/- 5% | 2 | |
| Junction and Storage Temperature | TJ and TSTG | -65 | 150 | °C | 1 | ||
| Off-State Power Dissipation | PD | 5 | W | @ 25 °C | 1 | ||
| Forward Voltage | VF | 1.2 | V | @ 1.0 A | 1 | ||
| Solder Temperature | TSP | 260 | °C | @ 10 s | 1 | ||
| Thermal Resistance Junction-to-Lead | RӨJL | 25 | °C/W | 1 | |||
| Thermal Resistance Junction-to-Ambient | RӨJA | 90 | °C/W | Mounted on FR4 PC board (1oz Cu) with recommended footprint | 1 | ||
| Maximum Dynamic Impedance | ZZ | 1 | Ohms | @ IZT | 3 | ||
| Maximum Reverse Current | IR | 1 | µA | TL = 30 °C; at VR | 3 | ||
| IR Test Voltage (B suffix) | VR | 3 | V | B & C suffix only | 3 | ||
| Maximum Regulator Current | IZM | 790 | mA | B & C suffix only | 3 | ||
| Maximum Dynamic Knee Impedance | ZZK | 300 | Ohms | @ 1.0 mA | 3 | ||
| Maximum Surge Current | IZSM | 12.7 | Amps | Non-recurrent half-sine wave, 8.3 ms | 3 | ||
| Regulator Voltage (nominal) | VZ | 6 | V | TL = 30 °C; measured at IZT | 3 | ||
| Test Current | IZT | 200 | mA | 3 |
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 | tin | • TERMINALS: C-bend (modified J-bend) tin-lead or RoHS compliant annealed matte-tin plating solderable per MIL-STD-750, method 2026. | 2 |
CAD (KiCad official)
- Symbol:
SMBJ5340BE3 - Footprint:
Diode_SMD:D_SMB - 3D model: SMBJ(DO-214AA) (KiCad packages3D, STEP)
- 3D model files:
smbj5340be3-etched.step/smbj5340be3-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);smbj5340be3.step/smbj5340be3.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Microchip Tech datasheet (5 pp, sha256
c3c70f99c17b211f, retrieved 2026-10-27, 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).