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Littelfuse Inc. 1.5KE7.5CA-B — Circuit Protection

Littelfuse 1.5KE7.5CA-B TVS Diode, 1500W, 6.4V Standoff

MPN1.5KE7.5CA-B
Active

Littelfuse Inc. 1.5KE series bidirectional Zener TVS diode, 1.5KE7.5CA-B, 1500W peak pulse power, 6.4V reverse standoff, 11.3V clamping, DO-201AA/DO-27 axial package, bulk.

$0.3397Ref. price · indicative, final on quote
Littelfuse Inc. 1.5KE7.5CA-B datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

1.5KE7.5CA-B specifications
ParameterValue
TypeZener
Series1.5KE
MountingThrough Hole
Voltage - breakdown7.13V
Voltage - clamping (Max) @ ipp11.3V
Voltage - reverse standoff6.4V
Current - peak pulse (10/1000μs)134.5A
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

1.5KE7.5CA-B: 1500 W bidirectional TVS in a DO-201 package

Its 6.4 V reverse standoff voltage (V_RWM) means it begins clamping above a 6.4 V DC rail — a fit for 5 V or 6 V supply lines where the normal operating voltage stays below that threshold and the TVS remains transparent until a transient arrives. Housed in a DO-201AA / DO-27 axial-lead package (supplier device package DO-201), it is a through-hole part suited for point-to-point wiring or PCB mounting where a robust leaded form factor is preferred over surface-mount alternatives.

Breakdown, clamping, and the transient budget

The minimum breakdown voltage is 7.13 V — the point at which the device starts to conduct significantly. Below this, leakage is negligible; above it, the diode shunts the surge current to ground. With a single bidirectional channel, this part handles transients of either polarity, simplifying BOM placement on AC-coupled or floating signal lines where the surge polarity is unknown.

Frequently asked questions

What is the 1.5KE7.5CA-B's reverse standoff voltage and why does it matter?

The reverse standoff voltage (V_RWM) is 6.4 V. This is the maximum DC voltage the TVS can withstand across its terminals without conducting significantly. For a 5 V or 6 V supply rail, the 1.5KE7.5CA-B sits idle during normal operation and only clamps when a transient pushes the line above its breakdown threshold.

What package does the 1.5KE7.5CA-B come in?

It is supplied in a DO-201AA / DO-27 axial-lead through-hole package (supplier device package DO-201). The bulk packaging is suitable for hand-insertion or wave-solder assembly.