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1.5KE91CA The 1.5KE91CA is a bidirectional TVS diode from Littelfuse with a reverse standoff voltage of 77.8V and clamping voltage of 125V. It offers 1500W peak pulse power dissipation in a DO-201 through-hole package.
Mfr Part #:

1.5KE91CA

Available from 1 distributors
Mfr Name: Littelfuse Inc.
Littelfuse Inc.
The 1.5KE91CA is a bidirectional TVS diode from Littelfuse with a reverse standoff voltage of 77.8V and clamping voltage of 125V. It offers 1500W peak pulse power dissipation in a DO-201 through-hole package.
Total Stock: 119 pcs

1.5KE91CA Available from 1 distributors

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1.5KE91CA Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Applications
Bidirectional Channels
Current
Current - Peak Pulse (10/1000µs)
Halogen Free
Industrial Grade
Junction and Storage Temperature Range
Lead Style
Maximum Instantaneous Forward Voltage
Mounting Type
Operating Temperature
Package / Case
Peak Forward Surge Current (8.3ms)
Peak Pulse Power Dissipation (10/1000µs)
Power
Power - Peak Pulse
Power Line Protection
SVHC Present
Steady State Power Dissipation
Storage Temperature
Supplier Device Package
Terminal Finish
Thermal Resistance Junction-to-Ambient
Thermal Resistance, Junction to Lead
Type
Voltage
Voltage - Clamping (Max) @ Ipp
Voltage - Reverse Standoff (Typ)

1.5KE91CA Description

Short technical summary and product information.

The Littelfuse 1.5KE91CA is a bidirectional transient voltage suppression (TVS) diode designed to protect sensitive electronic equipment from voltage transients induced by lightning and other transient events. It features a reverse standoff voltage (typical) of 77.8V and a maximum clamping voltage of 125V at a peak pulse current of 12.2A (10/1000µs waveform).

 

With a peak pulse power dissipation of 1500W (10/1000µs) and steady-state power dissipation of 6.5W at TL=75°C on an infinite heat sink, this device offers robust protection. The glass passivated chip junction ensures fast response time, typically less than 1.0ps from 0V to breakdown voltage. It also features a low incremental surge resistance and typical IR less than 1μA when VBR min > 12V.

 

The 1.5KE91CA is housed in a DO-201AA / DO-27 axial leaded through-hole package, making it suitable for I/O interfaces, VCC bus, and other vulnerable circuits in telecom, computer, industrial, and consumer electronic applications. The device is lead-free (Pb-free E3) and halogen free, with matte tin lead-free plated terminations.

1.5KE91CA Quick Information

Product Type: TVS Diode
Series: 1.5KE
Canonical Name: 1.5KE91CA TVS Diode, 77.8V Standoff, 125V Clamping, DO-201
Subcategory: Unidirectional / Bidirectional TVS

1.5KE91CA Compliance

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

1.5KE91CA Features

  • Bidirectional TVS diode, 1500W peak pulse power.
  • 77.8V reverse standoff and 125V clamping voltage.
  • Through-hole DO-201 package with axial leads.
  • Fast response time less than 1.0ps.
  • RoHS, halogen free, and lead-free compliant.

1.5KE91CA Applications

  • Protects I/O interfaces from voltage transients.
  • Safeguards VCC bus in telecom equipment.
  • Used in industrial and consumer electronics.
  • Suitable for lightning and transient protection.

1.5KE91CA FAQs

5 frequently asked questions generated from this part’s specifications.
What is the reverse standoff voltage of the 1.5KE91CA?

The reverse standoff voltage (typical) is 77.8V.

What is the clamping voltage of the 1.5KE91CA?

The maximum clamping voltage at Ipp is 125V.

What is the peak pulse power rating?

The peak pulse power dissipation is 1500W for a 10/1000µs waveform (single die parts).

What package does the 1.5KE91CA come in?

It is available in a DO-201AA/DO-27 axial leaded through-hole package (DO-201).

What is the operating temperature range?

The operating junction and storage temperature range is -55°C to 175°C.

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