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Littelfuse Inc. 1.5KE170C-B — Circuit Protection

Littelfuse 1.5KE170C-B TVS Diode, 1500W, Bidirectional

MPN1.5KE170C-B
Obsolete

Littelfuse Inc. 1.5KE series, TVS Zener diode, bidirectional, 1500W peak pulse power, 145V reverse standoff, DO-201AA axial package, bulk.

Littelfuse Inc. 1.5KE170C-B datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

1.5KE170C-B specifications
ParameterValue
TypeZener
Series1.5KE
MountingThrough Hole
Voltage - breakdown153.45V
Voltage - clamping (Max) @ ipp245.7V
Voltage - reverse standoff145V
Current - peak pulse (10/1000μs)6.5A
Power - peak pulse1500W (1.5kW)
Power line protectionNo
Operating temperature-55°C~175°C(TJ)
PackageBulk
ApplicationsGeneral Purpose
CaseDO-201AA, DO-27, Axial
Bidirectional channels1

Product details

What the 1500 W peak pulse rating means for your protection design

The 1.5KE170C-B: At that power level, the clamping voltage is held to 245.7 V maximum at a peak pulse current of 6.5 A. The reverse standoff voltage of 145 V means the part will not conduct appreciably below that DC level, making it suitable for protecting 120 VAC or 145 VDC rails where the normal operating voltage stays under that threshold.

Housed in a DO-201AA axial leaded package (DO-27 equivalent), the 1.5KE170C-B is a through-hole device. The axial leads require a 1.1 mm diameter hole on a 0.400-inch lead spacing — standard for this package family.

Littelfuse lists the 1.5KE170C-B as Obsolete.

Frequently asked questions

Where can I buy the 1.5KE170C-B?

The 1.5KE170C-B is obsolete and sourced through independent distribution.