P4KE300A The P4KE300A is a 400W unidirectional TVS diode from Littelfuse, designed for general purpose circuit protection. It features a reverse standoff voltage of 256V and a clamping voltage of 414V in a DO-204AL (DO-41) through-hole package.
Mfr Part #:

P4KE300A

Available from 1 distributors
Mfr Name: Littelfuse Inc.
Littelfuse Inc.
The P4KE300A is a 400W unidirectional TVS diode from Littelfuse, designed for general purpose circuit protection. It features a reverse standoff voltage of 256V and a clamping voltage of 414V in a DO-204AL (DO-41) through-hole package.
Total Stock: 179 pcs
$ Price Range: $0.18 - $0.73

P4KE300A Available from 1 distributor

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P4KE300A Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Applications
Breakdown Voltage (Vbr) Nominal
Current
Forward Voltage (VF @ 25A)
Halogen Free
Mounting Type
Operating Temperature
Peak Forward Surge Current (8.3ms)
Power
Power Line Protection
Reverse Standoff Voltage (Vrwm)
Supplier Device Package
Termination Style
Type
Unidirectional Channels
Voltage

P4KE300A Description

Short technical summary and product information.

The P4KE300A is a 400W unidirectional TVS (Transient Voltage Suppression) diode from the Littelfuse P4KE series, designed to protect sensitive electronic equipment from voltage transients including ESD, EFT, and induced lightning. It is housed in a DO-204AL (DO-41) axial leaded through-hole package and is suitable for general purpose circuit protection across telecom, industrial, and consumer applications.

 

Key electrical specifications include a reverse standoff voltage (VRWM) of 256V, a nominal breakdown voltage of 300V, and a clamping voltage (Vc) of 414V at the peak pulse current. The device can handle 400W of peak pulse power dissipation under a 10/1000μs waveform and offers a peak forward surge current of 60A (8.3ms single half sine wave). The maximum forward voltage at 25A is 3.5V. It operates over a junction temperature range of -55°C to 175°C.

 

The P4KE300A is a unidirectional diode with a single channel, providing fast response (typically less than 1.0ps) and low incremental surge resistance. It is RoHS compliant, halogen free, and lead free (Pb-free E3). The device is designed with a glass passivated chip junction for reliability and supports high temperature reflow soldering up to 260°C.

P4KE300A Quick Information

Product Type: TVS Diode
Series: P4KE
Canonical Name: Littelfuse P4KE300A TVS Diode 256V Standoff 414V Clamping DO-204AL
Subcategory: Unidirectional TVS Diode

P4KE300A Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 (Unlimited)
REACH Status: REACH Unaffected
Lead Free: Pb-free (E3)

P4KE300A Estimated Pricing

Qty Low High
1+ $0.73 $0.73
10+ $0.46 $0.46
100+ $0.29 $0.29
500+ $0.22 $0.22
1,000+ $0.20 $0.20
2,000+ $0.18 $0.18
5,000+ $0.19 $0.19

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

P4KE300A Features

  • 400W peak pulse power capability (10/1000μs).
  • Unidirectional TVS diode for DC line protection.
  • Clamping voltage of 414V ensures fast protection.
  • Through-hole DO-204AL (DO-41) package.
  • Operating temperature range -55°C to 175°C.

P4KE300A Applications

  • Protects I/O interfaces from ESD and lightning.
  • Suitable for VCC bus and telecom circuits.
  • Ideal for industrial ICT equipment protection.
  • Used in consumer electronics transient suppression.

P4KE300A FAQs

7 frequently asked questions generated from this part’s specifications.
What is the reverse standoff voltage (VRWM) of the P4KE300A?

256V

What is the breakdown voltage of the P4KE300A?

Nominal breakdown voltage is 300V.

What is the clamping voltage (Vc) of the P4KE300A?

414V

What is the peak pulse power dissipation of the P4KE300A?

400W (10/1000μs waveform).

What package does the P4KE300A use?

DO-204AL (DO-41) axial leaded through-hole package.

What is the operating temperature range of the P4KE300A?

-55°C to 175°C.

Is the P4KE300A unidirectional or bidirectional?

Unidirectional with 1 channel.

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