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SMAJ24A-Q

BOURNS · TVS · SMA(DO-214AC)

SMAJ24A-Q from BOURNS, in a SMA(DO-214AC). 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 terminal, marked by the cathode band on the unidirectional SMAJ24A-Q, which has 24 V working peak reverse voltage, 26.7-29.5 V breakdown at 1.0 mA and 38.9 V maximum clamping at 10.3 A (10/1000 µs).
2 A passive Anode terminal of the unidirectional SMAJ24A-Q, which is the opposite end from the cathode band and conducts in the forward direction (peak forward surge current 40 A, 8.3 ms half sine).

Key specifications

Parameter Value
Manufacturer BOURNS
Package SMA(DO-214AC)
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 VBR 26.7 29.5 V @ IT = 1.0 mA, TA = 25 °C 2
Working Peak Reverse Voltage VRWM 24 V TA = 25 °C 2
Maximum Reverse Leakage IR 1 μA @ VRWM 2
Maximum Clamping Voltage (10/1000 μs) Vc 38.9 V @ Ipp (10/1000 μs) 2
Maximum Peak Pulse Current (10/1000 μs) Ipp 10.3 A 10/1000 μs 2
Maximum Clamping Voltage (8/20 μs) Vc 50.6 V @ Ipp (8/20 μs) 2
Maximum Peak Pulse Current (8/20 μs) Ipp 51.5 A 8/20 μs 2
Breakdown Voltage Tolerance (A suffix) -5 5 % Suffix A: 5 % tolerance unidirectional device 4
Minimum Peak Pulse Power Dissipation PPK 400 Watts TP = 1 ms, TA = 25 °C (Note 1,2) 1
Peak Forward Surge Current IFSM 40 Amps 8.3 ms single half sine wave superimposed on rated load (JEDEC Method) (Note 3) 1
Operating Temperature Range TJ -55 150 °C 1
Storage Temperature Range TSTG -55 150 °C 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 5.0 mm2 (0.03 mm thick) copper pads to each terminal. 1

CAD (KiCad official)

  • Symbol: SMAJ24A-Q
  • Footprint: Diode_SMD:D_SMA
  • 3D model: SMA(DO-214AC) (KiCad packages3D, STEP)
  • 3D model files: smaj24a-q-etched.step / smaj24a-q-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); smaj24a-q.step / smaj24a-q.glb are the bare package body.

Provenance

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

  • Datasheet: BOURNS datasheet (6 pp, sha256 befe3c41feca349b, 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