SM20 Series - Surface Mount Varistor for use in applications requiring hi-energy / transient current capability

DataSheet:Littelfuse Varistor SM20 Datasheet

The Littelfuse SM20 Series is a 20mm SMD metal oxide varistor device. The AC rated parts are designed to operate continuously across AC power lines. The DC rated parts are suitable for Automotive applications. The series comprises a Nylon molded package with folded tin plated metal leads for soldering to board.

The SMD Series is based on radial 20mm internal varistor element with similar characteristics to the Littelfuse LA / ZA series of varistors.

Features:

DC Voltage Rating 26 – 420VDC
AC Voltage Rating 175 - 320AC
No De-Rating up to 85°C ambient
Lead-free, Halogen-free and RoHS compliant
Low voltage devices specified for automotive load dump energy
Available in "waffle" tray packaging

Ordering Information

Catalog #	Polarity	(ITM 1xAmps (A)	MSL	Co Typ(pF)	Size	Vc (V)	VMAX AC (V)	VMAX DC (V)	VNDC MAX (V)	VNDC MIN(V)
V175SM20	Bi-directional	6500	level 1	1400	20mm	455	175	225	303	247
V230SM20	Bi-directional	6500	level 1	1100	20mm	595	230	300	396	324
V250SM20	Bi-directional	6500	level 1	1000	20mm	650	250	330	429	354
V26SM20	Bi-directional	2000	level 1	12000	20mm	63	20	26	40	32
V275SM20	Bi-directional	6500	level 1	900	20mm	710	275	369	473	389
V300SM20	Bi-directional	6500	level 1	800	20mm	775	300	405	517	420
V320SM20	Bi-directional	6500	level 1	750	20mm	810	320	420	540	462