P4SMA250A P4SMA250A is a 400W unidirectional TVS diode from Littelfuse, designed for voltage transient protection. It features a 214V standoff voltage and 344V clamping voltage in a DO-214AC (SMA) package.
Mfr Part #:

P4SMA250A

Available from 2 distributors
Mfr Name: Littelfuse Inc.
Littelfuse Inc.
P4SMA250A is a 400W unidirectional TVS diode from Littelfuse, designed for voltage transient protection. It features a 214V standoff voltage and 344V clamping voltage in a DO-214AC (SMA) package.
Total Stock: 9,958 pcs

P4SMA250A Available from 2 distributors

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Non-Authorised Inventory information
4,979 pcs
4979 pcs On Request 1 On Request On Request On Request On Request On Request

P4SMA250A Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Applications
Current
Forward Voltage
Halogen Free
Lead Finish
Mounting Type
Operating Temperature
Peak Forward Surge Current
Power
Power Dissipation
Power Line Protection
Response Time
Storage Temperature Range
Supplier Device Package
Tape & Reel
Thermal Resistance Junction-to-Ambient
Thermal Resistance, Junction to Lead
Type
Unidirectional Channels
Voltage

P4SMA250A Description

Short technical summary and product information.

The P4SMA250A is a 400W peak pulse power TVS diode from the P4SMA series, manufactured by Littelfuse. It is designed to protect sensitive electronic equipment from voltage transients induced by lightning and other transient events. This unidirectional Zener TVS diode offers a standoff voltage of 214V and a clamping voltage of 344V at a peak pulse current of 1.2A.

 

The device features a fast response time of less than 1.0ps, ensuring rapid clamping of transient voltages. It is capable of handling a peak forward surge current of 60A (8.3ms single half sine wave) and has a power dissipation of 3.3W on an infinite heatsink at 50°C lead temperature. The operating junction temperature range is -65°C to 150°C, with a storage temperature range of -65°C to 175°C.

 

The P4SMA250A is housed in a surface mount DO-214AC (SMA) package, which is compact and suitable for high-density PCB layouts. The package is matte tin plated, lead-free, and halogen-free, meeting RoHS compliance and MSL level 1 requirements. The device is ideal for protecting I/O interfaces, VCC bus, and other vulnerable circuits in telecom, computer, industrial, and consumer electronic applications.

P4SMA250A Quick Information

Product Type: TVS Diode
Series: P4SMA
Canonical Name: P4SMA250A TVS Diode, 400W, Unidirectional, DO-214AC
Subcategory: Zener TVS Diode

P4SMA250A Compliance

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

P4SMA250A Features

  • 400W peak pulse power dissipation.
  • Unidirectional Zener TVS protection.
  • Fast response time less than 1.0ps.
  • Surface mount DO-214AC (SMA) package.
  • RoHS compliant and halogen-free.

P4SMA250A Applications

  • Protects I/O interfaces and VCC bus.
  • Ideal for telecom and computer equipment.
  • Used in industrial and consumer electronics.
  • Safeguards against lightning-induced transients.

P4SMA250A FAQs

7 frequently asked questions generated from this part’s specifications.
What is the clamping voltage of the P4SMA250A?

The maximum clamping voltage is 344V at peak pulse current.

What is the peak pulse current rating?

The peak pulse current (Ipp) is 1.2A.

What package is the P4SMA250A available in?

It is available in a DO-214AC (SMA) surface mount package.

What is the peak pulse power dissipation?

The peak pulse power dissipation is 400W for single die parts.

What is the operating temperature range?

The operating junction temperature range is -65°C to 150°C.

What is the response time of this TVS diode?

The response time is typically less than 1.0ps from 0V to breakdown voltage.

How many unidirectional channels does it have?

It has 1 unidirectional channel.

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