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SA43A Littelfuse SA43A is a 500W unidirectional TVS diode with 43V reverse standoff voltage and 69.4V clamping voltage, housed in a DO-204AC (DO-15) axial leaded package.
Mfr Part #:

SA43A

Available from 1 distributors
Mfr Name: Littelfuse Inc.
Littelfuse Inc.
Littelfuse SA43A is a 500W unidirectional TVS diode with 43V reverse standoff voltage and 69.4V clamping voltage, housed in a DO-204AC (DO-15) axial leaded package.
✓ Total Stock: 437 pcs

SA43A Available from 1 distributor

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✓ Non-Authorised
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Bristol Electronics ✓
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437 pcs
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437 pcs On Request 1 On Request On Request On Request On Request On Request
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SA43A Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Applications
Current
Halogen Free
Mounting Type
Operating Temperature
Peak Forward Surge Current
Power
Power Line Protection
Response Time
Supplier Device Package
Type
Unidirectional Channels
Voltage
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SA43A Description

Short technical summary and product information.

The Littelfuse SA43A is a 500W unidirectional transient voltage suppressor (TVS) diode from the SA series, designed to protect sensitive electronic equipment from voltage transients induced by lightning and other transient events. It features a reverse standoff voltage of 43V and a maximum clamping voltage of 69.4V at a peak pulse current of 7.3A (10/1000μs waveform). This TVS diode offers a fast response time of less than 1.0ps from 0V to breakdown voltage, making it suitable for high-speed data line protection. It also provides IEC-61000-4-2 ESD protection up to 30kV (air and contact) and IEC-61000-4-4 EFT protection.

 

The device is housed in a DO-204AC (DO-15) axial leaded package with through-hole mounting and operates over a junction temperature range of -55°C to +175°C. The package is matte tin lead-free plated, halogen free, and RoHS compliant. The SA43A is ideal for protecting I/O interfaces, VCC bus lines, and other vulnerable circuits in telecom, computer, industrial, and consumer electronic applications. With a glass passivated chip junction, it offers excellent clamping capability and low incremental surge resistance.

SA43A Quick Information

Product Type: TVS Diode
Series: SA
Canonical Name: Littelfuse SA43A 500W TVS Diode, Unidirectional, 43V Reverse Standoff Voltage, DO-204AC (DO-15)
Subcategory: Unidirectional TVS Diode

SA43A Compliance

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

SA43A Features

  • 500W peak pulse power dissipation capability.
  • Reverse standoff voltage rated at 43V.
  • Maximum clamping voltage of 69.4V.
  • Fast response time less than 1.0 picosecond.
  • RoHS and halogen free compliant package.

SA43A Applications

  • Protects I/O interfaces from voltage transients.
  • Suitable for VCC bus protection in electronics.
  • Used in telecom and computer equipment.
  • Ideal for industrial and consumer applications.

SA43A FAQs

5 frequently asked questions generated from this part’s specifications.
What is the reverse standoff voltage of the SA43A?

The reverse standoff voltage is 43V.

What is the maximum clamping voltage of the SA43A?

The maximum clamping voltage is 69.4V.

What is the peak pulse power rating of the SA43A?

The SA43A is rated for 500W peak pulse power at 10/1000μs waveform.

What is the package type of the SA43A?

The package is DO-204AC (also known as DO-15) axial leaded, through hole mounting.

What is the operating temperature range of the SA43A?

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

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