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Microchip Technology SMBJ33E3/TR13 — Circuit Protection

SMBJ33E3/TR13 Zener TVS Diode – 33V, 600W

MPNSMBJ33E3/TR13
Active

Microchip Technology SMBJ33E3/TR13, Zener TVS diode, 33V reverse standoff, 600W peak pulse power, DO-214AA (SMB) surface-mount package, Tape & Reel.

$0.2850Ref. price · indicative, final on quote
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

SMBJ33E3/TR13 specifications
ParameterValue
TypeZener
MountingSurface Mount
Voltage - breakdown36.7V
Voltage - clamping (Max) @ ipp59V
Voltage - reverse standoff33V
Current - peak pulse (10/1000μs)10.2A
Power - peak pulse600W
Power line protectionNo
Operating temperature-65°C~150°C(TJ)
PackageTape & Reel (TR)
ApplicationsGeneral Purpose
CaseDO-214AA, SMB
Unidirectional channels1

Product details

What this TVS diode protects and how it clamps

Its reverse standoff voltage is 33V, meaning it stays transparent to the circuit until the line exceeds that level. When a surge hits, the device breaks down at a minimum of 36.7V and clamps the voltage to a maximum of 59V at the rated peak pulse current of 10.2A. The part is a single unidirectional channel, so it protects one polarity. For AC or bidirectional lines, you would need two devices back-to-back or a dedicated bidirectional TVS.

Package, temperature range, and storage reality

Lifecycle status — active, no EOL watch needed

For a spare-parts storeroom, this part is a safe long-term stock item — no last-time-buy scramble expected in the near term.

Sourcing this part through distribution

Because the part is Active and a standard Microchip catalog item, it is available through authorized distribution channels. Pricing and lead time vary with quantity and market conditions — submit an RFQ for current availability against your BOM line.

Frequently asked questions

Is SMBJ33E3/TR13 the exact replacement for SMBJ33?

Yes — the base product number is SMBJ33. The /TR13 suffix only specifies Tape & Reel packaging. Any SMBJ33 device in the same DO-214AA package is functionally identical; just confirm the reel format matches your assembly process.