SMC3K Transient Voltage Suppressors

The SMC3K TRANSZORB surface-mount, bi-directional TVS features high surge capability to 3 kW in an SMC DO-214AB package

Image of Vishay Semiconductor/Diodes Division's SMC3K TRANSZORB® Transient Voltage SuppressorsVishay Semiconductor/Diodes Division offers a series of surface-mount, TRANSZORB, bi-directional transient voltage suppressors (TVS) in the SMC DO-214AB package. Offering twice the surge capability of conventional 1.5 KW devices in SMC packages, the SMC3K series devices increase design flexibility and compatibility. The TVS’ low-stress, symmetric lead frame designs provide the high reliability required for automotive applications.

Vishay has designed these suppressors to protect sensitive electronic equipment against voltage transients induced by system inductive load switching and lightning. The AEC-Q101-qualified devices are suitable for LNB and telecom power line lightning surge protection, and automotive motor and battery power line inductive surge protection.

The SMC3K series consists of 19 TVS devices with stand-off voltages from 22 V to 78 V. The devices offer a peak pulse surge current from 23.8 A to 84.5 A, maximum clamping voltage from 35.5 V to 126 V. They also feature very fast response times, low incremental surge resistance, and operating temperature from -55°C to +150°C.

The series meets the MSL Level 1 standard, per J-STD-020, LF maximum peak of 260°C. The RoHS compliant TVS devices are halogen-free, according to the IEC 61249-2-21 definition and comply with WEEE 2002/96/EC. TVS with a stand-off voltage of 33 V and below are also compliant with the IEC61000-4-5, 6 KV (Zs = 12 Ω) lightning surge tests.

Features Applications
  • Available in bi-directional polarity only
  • Excellent clamping capability
  • Not recommended for PCB bottom side wave mounting
  • AEC-Q101 qualified
  • Compliant to RoHS Directive 2002/95/EC and in accordance to WEEE 2002/96/EC
  • Halogen-free according to IEC 61249-2-21 definition
  • Signal lines of sensor units for consumer
  • Computer
  • Industrial
  • Automotive
  • Telecommunication


ImageManufacturer Part NumberDescriptionAvailable QuantityView Details
SMC3K33CA-M3/57 datasheet linkTVS DIODE 33VWM DO214AB (SMC)SMC3K33CA-M3/57TVS DIODE 33VWM DO214AB (SMC)1700 - Immediate
SMC3K33CA-M3/57 product page link
SMC3K36CA-M3/57 datasheet linkTVS DIODE 36VWM DO214AB (SMC)SMC3K36CA-M3/57TVS DIODE 36VWM DO214AB (SMC)840 - Immediate
SMC3K36CA-M3/57 product page link
SMC3K24CA-M3/57 datasheet linkTVS DIODE 24VWM DO214AB (SMC)SMC3K24CA-M3/57TVS DIODE 24VWM DO214AB (SMC)723 - Immediate
SMC3K24CA-M3/57 product page link
SMC3K28CA-M3/57 datasheet linkTVS DIODE 28VWM DO214AB (SMC)SMC3K28CA-M3/57TVS DIODE 28VWM DO214AB (SMC)0SMC3K28CA-M3/57 product page link
SMC3K43CA-M3/57 datasheet linkTVS DIODE 43VWM DO214AB (SMC)SMC3K43CA-M3/57TVS DIODE 43VWM DO214AB (SMC)11 - Immediate
SMC3K43CA-M3/57 product page link
SMC3K48CA-M3/57 datasheet linkTVS DIODE 48VWM DO214AB (SMC)SMC3K48CA-M3/57TVS DIODE 48VWM DO214AB (SMC)0SMC3K48CA-M3/57 product page link
SMC3K78CA-M3/57 datasheet linkTVS DIODE 78VWM DO214AB (SMC)SMC3K78CA-M3/57TVS DIODE 78VWM DO214AB (SMC)0SMC3K78CA-M3/57 product page link
SMC3K51CA-M3/57 datasheet linkTVS DIODE 51VWM DO214AB (SMC)SMC3K51CA-M3/57TVS DIODE 51VWM DO214AB (SMC)0SMC3K51CA-M3/57 product page link
Published: 2013-07-02