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Made with KiCad 10.0 · needs KiCad 10.0 or later to open · KiCad file format 20260206

Name	Last commit message	Last updated
docs	Publish 0.1.0 · Ray	18d ago
viewers	smaj30cahm2g: symbol repaired (bidirectional TVS (the page says so)) · Ray	5d ago
package.json	Publish 0.1.0 · Ray	18d ago
page.json	Set visibility: public · Ray	18d ago
README.md	Publish 0.1.0 · Ray	18d ago
smaj30cahm2g-etched.glb	Publish 0.1.0 · Ray	18d ago
smaj30cahm2g-etched.step	smaj30cahm2g: factory component page (tier=lcsc) · Ray	18d ago
smaj30cahm2g-hero.glb	smaj30cahm2g: hero GLB from the etched model (keeps the MPN mark) · Ray	18d ago
smaj30cahm2g-hero.overlay.json	Publish 0.1.0 · Ray	18d ago
smaj30cahm2g.glb	Publish 0.1.0 · Ray	18d ago
smaj30cahm2g.kicad_mod	Publish 0.1.0 · Ray	18d ago
smaj30cahm2g.kicad_sym	smaj30cahm2g: symbol repaired (bidirectional TVS (the page says so)) · Ray	5d ago
smaj30cahm2g.lbr	smaj30cahm2g: symbol repaired (bidirectional TVS (the page says so)) · Ray	5d ago
smaj30cahm2g.step	Publish 0.1.0 · Ray	18d ago

SMAJ30CAHM2G

Taiwan Semiconductor · TVS · SMA

SMAJ30CAHM2G from Taiwan Semiconductor, in a SMA. 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	A1	passive	Bidirectional TVS terminal with electrical characteristics identical in both directions (SMAJ30A values: VWM 30 V, VBR 33.3-36.8 V at 1 mA, VC 48.4 V at 8.3 A, 400 W peak pulse power at 10/1000 µs).
2	A2	passive	Second bidirectional TVS terminal, interchangeable with the other terminal because the C/CA suffix part has no cathode band and the same characteristics in both directions (VWM 30 V, 400 W peak pulse power at 10/1000 µs).

Key specifications

Parameter	Value
Manufacturer	Taiwan Semiconductor
Package	SMA
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	33.3		36.8	V	@ IT = 1 mA, pulse test PW=30 ms	2
Test current	IT		1		mA		2
Working stand-off voltage	VWM		30		V		2
Maximum reverse leakage current	IR			1	µA	@ VWM, pulse test PW=30 ms	2
Maximum peak impulse current	IPPM			8.3	A	10/1000µs waveform	2
Maximum clamping voltage	VC			48.4	V	@ IPPM, 10/1000µs waveform	2
Peak power dissipation	PPK			400	W	TA=25°C, tp=1ms	1
Steady state power dissipation	PD			1	W		1
Peak forward surge current	IFSM			40	A	8.3 ms single half sine-wave superimposed on rated load	1
Operating junction 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		tin	● Matte tin plated leads, solderable per J-STD-002 ● Meet JESD 201 class 2 whisker test	1

CAD (KiCad official)

Symbol: SMAJ30CAHM2G
Footprint: Diode_SMD:D_SMA
3D model: SMA (KiCad packages3D, STEP)
3D model files: smaj30cahm2g-etched.step / smaj30cahm2g-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); smaj30cahm2g.step / smaj30cahm2g.glb are the bare package body.

Provenance

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

Datasheet: Taiwan Semiconductor datasheet (8 pp, sha256 6a5d121244fc257f, 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