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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	15d ago
viewers	tpsma27ahe3-b: symbol repaired (D_Zener, cathode pad 1) · Ray	1d ago
package.json	Publish 0.1.0 · Ray	15d ago
page.json	Set visibility: public · Ray	15d ago
README.md	Publish 0.1.0 · Ray	15d ago
tpsma27ahe3-b-etched.glb	Publish 0.1.0 · Ray	15d ago
tpsma27ahe3-b-etched.step	tpsma27ahe3-b: factory component page (tier=mfr) · Ray	15d ago
tpsma27ahe3-b-hero.glb	tpsma27ahe3-b: hero GLB from the etched model (keeps the MPN mark) · Ray	15d ago
tpsma27ahe3-b-hero.overlay.json	Publish 0.1.0 · Ray	15d ago
tpsma27ahe3-b.glb	Publish 0.1.0 · Ray	15d ago
tpsma27ahe3-b.kicad_mod	Publish 0.1.0 · Ray	15d ago
tpsma27ahe3-b.kicad_sym	tpsma27ahe3-b: symbol repaired (D_Zener, cathode pad 1) · Ray	1d ago
tpsma27ahe3-b.lbr	tpsma27ahe3-b: symbol repaired (D_Zener, cathode pad 1) · Ray	1d ago
tpsma27ahe3-b.step	Publish 0.1.0 · Ray	15d ago

TPSMA27AHE3_B

Vishay Intertech · TVS · SMA(DO-214AC)

TPSMA27AHE3_B from Vishay Intertech, 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 of the uni-directional TVS, marked by the color band; connects to the protected positive line, with VWM 23.1 V and VBR 25.7 V to 28.4 V at 1.0 mA for the TPSMA27A.
2	A	passive	Anode terminal of the uni-directional TVS, the end opposite the cathode band; connects to ground or the return line, with 400 W peak pulse power (10/1000 μs) for the TPSMA27A.

Key specifications

Parameter	Value
Manufacturer	Vishay Intertech
Package	SMA(DO-214AC)
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	25.7	27	28.4	V	at IT = 1.0 mA, TA = 25 °C	2
Test current	IT		1		mA	VBR test current	2
Stand-off voltage	VWM		23.1		V		2
Maximum reverse leakage at VWM, TJ = 150 °C	IR			1	µA	at VWM, TJ = 150 °C	2
Maximum reverse leakage at VWM	ID			5	µA	at VWM	2
Maximum peak pulse surge current	IPPM			10.7	A	10/1000 µs waveform, TA = 25 °C	2
Maximum clamping voltage	VC			37.5	V	at IPPM	2
Typical temp. coefficient of VBR	αT		0.087		%/°C		2
Peak power dissipation	PPPM			400	W	10/1000 µs waveform, TA = 25 °C	1
Power dissipation	PD			1	W	TA = 25 °C, minimum recommended pad layout	1
Peak forward surge current	IFSM			40	A	8.3 ms single half sine-wave	1
Maximum instantaneous forward voltage	VF			3.5	V	at 25 A	1
Operating junction and storage temperature range	TJ, TSTG	-65		185	°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	Terminals: matte tin plated leads, solderable per J-STD-002 and JESD 22-B102	1

CAD (KiCad official)

Symbol: TPSMA27AHE3_B
Footprint: Diode_SMD:D_SMA
3D model: SMA(DO-214AC) (KiCad packages3D, STEP)
3D model files: tpsma27ahe3-b-etched.step / tpsma27ahe3-b-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); tpsma27ahe3-b.step / tpsma27ahe3-b.glb are the bare package body.

Provenance

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

Datasheet: Vishay Intertech datasheet (5 pp, sha256 b467c64ff0c5106f, retrieved 2026-10-22, tier: manufacturer)
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