DistyParts Icon
3KP40A The 3KP40A is a 3000W TVS diode from Littelfuse with a 40V reverse standoff voltage and 64.5V clamping voltage. It comes in a P600 axial package for through-hole mounting.
Mfr Part #:

3KP40A

Available from 1 distributors
Mfr Name: Littelfuse Inc.
Littelfuse Inc.
The 3KP40A is a 3000W TVS diode from Littelfuse with a 40V reverse standoff voltage and 64.5V clamping voltage. It comes in a P600 axial package for through-hole mounting.
✓ Total Stock: 495 pcs

3KP40A Available from 1 distributor

✓ Authorised
✓ Non-Authorised
Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
Bristol Electronics ✓
Non-Authorised Inventory information
495 pcs
On Request
495 pcs On Request 1 On Request On Request On Request On Request On Request
DistyParts aggregates offers from multiple distributors. Final prices, lead times and terms are subject to the distributors' discretion and may change without prior notice. DistyParts is not liable for any discrepancies.

3KP40A Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Applications
Current
Forward Voltage
Halogen Free
Lead Style
Mounting Type
Operating Temperature
Operating Temperature Range
Package / Case
Peak Forward Surge Current
Power
Power Line Protection
Supplier Device Package
Technology
Termination Style
Type
Unidirectional Channels
Voltage
View Similar Products (0)

3KP40A Description

Short technical summary and product information.

The Littelfuse 3KP40A is a 3000W transient voltage suppression diode designed to protect sensitive electronic equipment from voltage transients induced by lightning and other transient voltage events. It features a 40V reverse standoff voltage, 64.5V maximum clamping voltage, and 46.5A peak pulse current capability per 10/1000μs waveform. The device utilizes a glass passivated chip junction in a P600 axial package for through-hole mounting.

 

Key specifications include a peak pulse power dissipation of 3000W, steady state power dissipation of 7W, and peak forward surge current of 300A for 8.3ms single half sine wave. The Zener technology provides fast response time typically less than 1.0ps. The device operates over a temperature range of -55°C to 175°C and has thermal resistance of 8°C/W junction to lead and 40°C/W junction to ambient.

 

Applications include protection of I/O interfaces, VCC bus, and other vulnerable circuits in telecom, computer, industrial, and consumer electronic systems. The unidirectional configuration supports single-channel protection. The through-hole mounting and axial lead package facilitate easy integration into circuit boards.

3KP40A Quick Information

Product Type: TVS Diode
Series: 3KP
Canonical Name: Littelfuse 3KP40A TVS Diode - 40V Standoff, 3000W Peak Pulse Power
Subcategory: General Purpose TVS Diodes

3KP40A Compliance

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

3KP40A Features

  • 3000W peak pulse power dissipation capability.
  • 40V reverse standoff voltage rating.
  • 64.5V clamping voltage at 46.5A peak pulse.
  • Fast response time of less than 1.0ps.
  • Through-hole P600 axial package.

3KP40A Applications

  • Protects I/O interfaces from voltage transients.
  • Ideal for VCC bus protection in telecom systems.
  • Used in industrial and consumer electronic applications.
  • Protects sensitive circuits from lightning-induced surges.

3KP40A FAQs

7 frequently asked questions generated from this part’s specifications.
What is the reverse standoff voltage of the 3KP40A?

40V.

What is the clamping voltage of the 3KP40A?

64.5V at 10/1000μs test waveform.

What is the peak pulse current rating?

46.5A at 10/1000μs waveform.

What package does the 3KP40A come in?

P600, Axial (through-hole).

What is the peak pulse power dissipation?

3000W at 10/1000μs waveform.

What is the operating temperature range?

-55°C to 175°C.

What is the peak forward surge current?

300A for 8.3ms single half sine wave (unidirectional only).

Home
Account

Categories