1.5KE91A-E3/54 1.5KE91A-E3/54 is a 1500W unidirectional TVS diode from Vishay Dale. It features a reverse standoff voltage of 77.8V and clamping voltage of 125V at 12A peak pulse current.
Mfr Part #:

1.5KE91A-E3/54

Available from 1 distributors
Mfr Name: Vishay
Vishay
1.5KE91A-E3/54 is a 1500W unidirectional TVS diode from Vishay Dale. It features a reverse standoff voltage of 77.8V and clamping voltage of 125V at 12A peak pulse current.
Total Stock: 1,400 pcs
$ Price Range: $0.33 - $1.22

1.5KE91A-E3/54 Available from 1 distributor

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1.5KE91A-E3/54 Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
AEC Qualified
Applications
Automotive Grade
Current
Industrial Grade
Lead Style
Medical Grade
Military Grade
Mounting Type
Number of Channels
Operating Temperature
Packaging Type
Peak Forward Surge Current
Power
Power Dissipation
Power Line Protection
Reverse Standoff Voltage
SVHC Present
Supplier Device Package
Tape & Reel
Termination Finish
Type
Unidirectional Channels
Voltage

1.5KE91A-E3/54 Description

Short technical summary and product information.

The 1.5KE91A-E3/54 is a 1500W unidirectional transient voltage suppressor (TVS) diode from Vishay Dale, designed to protect sensitive electronics from voltage transients. It is based on a Zener structure with a glass passivated chip junction for reliability.

 

Key electrical specifications include a reverse standoff voltage of 77.8V, a maximum clamping voltage of 125V at a peak pulse current of 12A (10/1000 μs waveform), and a peak pulse power rating of 1500W. The device also handles a peak forward surge current of 200A (8.3 ms half sine-wave). Operating temperature range is -55°C to 175°C.

 

The diode is housed in a through-hole DO-201AA, DO-27, or Axial package with matte tin-plated leads. Mounting is through-hole with axial lead style. The device is RoHS3 compliant (E3 suffix) and meets UL 94 V-0 flammability rating for the molding compound.

 

Typical applications include protection against inductive load switching and lightning-induced transients in consumer, computer, industrial, automotive, and telecommunication systems. The device offers fast response time and low incremental surge resistance.

1.5KE91A-E3/54 Quick Information

Product Type: TVS Diode
Series: 1.5KE
Canonical Name: 1.5KE91A-E3/54 Unidirectional TVS Diode, 1500W, 77.8V Standoff, 125V Clamp
Subcategory: Unidirectional TVS Diode

1.5KE91A-E3/54 Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 Unlimited
REACH Status: REACH Unaffected

1.5KE91A-E3/54 Estimated Pricing

Qty Low High
1+ $1.22 $1.22
10+ $0.84 $0.84
100+ $0.58 $0.58
500+ $0.47 $0.47
1,400+ $0.37 $0.37
2,800+ $0.37 $0.37
4,200+ $0.34 $0.34
9,800+ $0.33 $0.33

Estimated market price range - modelled values for guidance only, not live distributor offers.

1.5KE91A-E3/54 Features

  • 1500W peak pulse power capability.
  • 77.8V reverse standoff voltage.
  • 125V clamping voltage at 12A.
  • Unidirectional Zener TVS diode.
  • Through-hole axial package.

1.5KE91A-E3/54 Applications

  • Protection against inductive load switching transients.
  • Protection for ICs, MOSFETs, and sensor lines.
  • Used in consumer, computer, industrial, automotive.
  • General purpose transient voltage suppression.

1.5KE91A-E3/54 FAQs

7 frequently asked questions generated from this part’s specifications.
What is the reverse standoff voltage of the 1.5KE91A-E3/54?

77.8 V.

What is the clamping voltage at 12A?

125 V maximum at 12 A.

What is the peak pulse current rating?

12 A maximum for a 10/1000 μs waveform.

What is the package type?

DO-201AA, DO-27, Axial through-hole package.

Is the device unidirectional or bidirectional?

Unidirectional.

What is the operating temperature range?

-55°C to 175°C.

What is the power dissipation?

6.5 W maximum at TL=75°C with infinite heatsink.

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