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Contents

README

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TPSMB64A-VR

Littelfuse · TVS · DO-214AA(SMBJ)

TPSMB64A-VR from Littelfuse, in a DO-214AA(SMBJ). 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 Cathode passive Cathode terminal of the unidirectional TVS, marked by the color band, connected to the protected line (VR 64.0 V stand-off, VBR 71.10-78.60 V at 1 mA, VC 103.0 V at Ipp 5.9 A).
2 Anode passive Anode terminal of the unidirectional TVS, connected to the return/ground side; forward voltage VF is 3.5 V max at 50 A for unidirectional parts with VR below 250 V.

Key specifications

Parameter Value
Manufacturer Littelfuse
Package DO-214AA(SMBJ)
Category Circuit 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 VBR 71.1 78.6 V @ IT = 1 mA 2
Test Current IT 1 mA 2
Reverse Stand-off Voltage VR 64 V 2
Maximum Clamping Voltage VC 103 V @ Ipp = 5.9 A 2
Maximum Peak Pulse Current Ipp 5.9 A 2
Maximum Reverse Leakage IR 1 µA @ VR 2
Typical IR at 150°C IR 8 µA @ 150°C 2
Maximum Temperature Coefficient of VBR αT 0.104 %/C 2
Peak Pulse Power Dissipation PPPM 600 W 10/1000µs waveform 1
Power Dissipation on infinite heat sink PM(AV) 5 W TL=50°C 1
Peak Forward Surge Current IFSM 100 A 8.3ms single half sine wave, unidirectional only 1
Maximum Instantaneous Forward Voltage VF 3.5 V at 50A, unidirectional only 1
Operating Junction Temperature TJ -65 175 °C VR≤78V 1
Storage Temperature Range TSTG -65 175 °C 1
Thermal Resistance Junction to Lead RuJL 20 °C/W Typical 1
Thermal Resistance Junction to Ambient RuJA 100 °C/W Typical 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 tin • Matte tin lead-free plated • Halogen free and RoHS 1

CAD (KiCad official)

  • Symbol: TPSMB64A-VR
  • Footprint: Diode_SMD:D_SMB
  • 3D model: DO-214AA(SMBJ) (KiCad packages3D, STEP)
  • 3D model files: tpsmb64a-vr-etched.step / tpsmb64a-vr-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); tpsmb64a-vr.step / tpsmb64a-vr.glb are the bare package body.

Provenance

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

  • Datasheet: Littelfuse datasheet (6 pp, sha256 ecc921caf390ee00, 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