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Diodes Incorporated 1.5KE18CA-B — Circuit Protection

1.5KE18CA-B Diodes Inc Zener TVS, 1.5kW, DO-201

MPN1.5KE18CA-B
Obsolete

Diodes Incorporated 1.5KE18CA-B Zener TVS diode, bidirectional, 1500W peak pulse power, 15.3V reverse standoff, 25.2V clamping, DO-201 axial, bulk.

$1.4600Ref. price · indicative, final on quote
Diodes Incorporated 1.5KE18CA-B datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

1.5KE18CA-B specifications
ParameterValue
TypeZener
MountingThrough Hole
Voltage - breakdown17.1V
Voltage - clamping (Max) @ ipp25.2V
Voltage - reverse standoff15.3V
Current - peak pulse (10/1000μs)59.5A
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

1.5kW bidirectional Zener TVS in DO-201

The 1.5KE18CA-B: The DO-201 (DO-27) axial-lead package suits through-hole assembly on boards where a replaceable, high-surge TVS is preferred over surface-mount — common in PSU input stages, battery circuits, and field-serviceable equipment.

Obsolete — surplus-channel sourcing

Sourcing runs through independent surplus and broker channels; each lot is verified for date-code consistency and original packaging before quoting.

What the ratings mean for the BOM

The 15.3 V reverse standoff (working voltage) means the TVS does not conduct at normal 12 V or 15 V rail levels — leakage is negligible below that threshold. Clamping at 25.2 V limits the voltage seen by downstream components during a surge; the 59.5 A peak pulse current handling ensures the diode absorbs the transient without failing short.

Frequently asked questions

What is the 1.5KE18CA-B's peak pulse power rating?

It is rated for 1500 W (1.5 kW) peak pulse power at a 10/1000 µs waveform, clamping at 25.2 V with a peak pulse current of 59.5 A.