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

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SMBJ220A

JUXING · Electrostatic And Surge Protection (TVS/ESD) · SMB

SMBJ220A from JUXING, in a SMB. 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 unipolar (UNI) TVS per the PINNING table; the datasheet states no separate voltage or current limit for this pin, and the SMBJ220A (A suffix, not CA) is the unipolar variant.
2	Anode	passive	Anode terminal of the unipolar (UNI) TVS per the PINNING table; the datasheet states no separate voltage or current limit for this pin, and the SMBJ220A (A suffix, not CA) is the unipolar variant.

Key specifications

Parameter	Value
Manufacturer	JUXING
Package	SMB
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 (min)	VBR	246			V	Test current IT = 1 mA (Table 1, SMBJ220A row)	2
Breakdown voltage (max)	VBR			272	V	Test current IT = 1 mA (Table 1, SMBJ220A row)	2
Max. clamp voltage	VC			356	V	At peak pulse current IPP = 1.7 A (Table 1)	2
Peak pulse current	IPP			1.7	A	Table 1, SMBJ220A row	2
Reverse leakage current				1	μA	At reverse stand-off voltage VRMW (Table 1)	2
Reverse stand-off voltage	VRMW			220	V	Table 1, SMBJ220A (unidirectional) row	2
Peak pulse power dissipation	PPPM			600	W	10/1000 μs waveform (Note 1, Note 2, Fig 1)	1
Peak forward surge current	IFSM			100	A	8.3 ms single half sine-wave, JEDEC method (Note 3, Fig 4)	1
Peak pulse current (absolute maximum)	IPPM			1.7	A	10/1000 μs waveform (Note 1, Fig 3); value per Table 1 for SMBJ220A	1
Operating junction and storage temperature range	Tj, Tstg	-65		150	°C		1
ESD voltage, contact	VESD1			30	kV	Per IEC6100-4-2, contact	1
ESD voltage, air	VESD2			30	kV	Per IEC6100-4-2, air	1
Typical thermal resistance junction to ambient	RθJA		100		°C/W	Mounted on 5 mm (0.13mm thick) land areas (Note 2)	1

CAD (KiCad official)

Symbol: SMBJ220A
Footprint: Diode_SMD:D_SMB
3D model: SMB (KiCad packages3D, STEP)
3D model files: smbj220a-etched.step / smbj220a-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); smbj220a.step / smbj220a.glb are the bare package body.

Provenance

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

Datasheet: JUXING datasheet (4 pp, sha256 ab4c8155c5d7d83f, retrieved 2026-10-21, tier: lcsc)
Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-haiku-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