P3403AC60 Equivalent & Substitute Parts

Part Overview

The P3403AC60 is a 300V off-state, 400A peak pulse TVS thyristor manufactured by Littelfuse Inc. in the SIDACtor® series. This component is designed for transient voltage suppression applications requiring three-element configuration in a TO-220 modified package. The part is currently classified as obsolete, making identification of functionally equivalent alternatives necessary for ongoing system support and new design implementations.

Substiute Parts

P3403AC60

Littelfuse Inc.In Stock: 1181P3403AC60 Datasheet

Current PartRFQ

P3403ACL60

Littelfuse Inc.In Stock: 1755P3403ACL60 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the P3403AC60 is determined by electrical and mechanical parameter equivalence. The critical parameters defining substitutability are:

• Voltage ratings: Breakover voltage (400V), off-state voltage (300V), and on-state voltage (8V)
• Current specifications: Peak pulse current at 8/20µs (400A) and 10/1000µs (100A), hold current (150mA)
• Physical configuration: Three-element design (Number of Elements = 3)
• Package compatibility: 3-SIP / TO-220 Modified through-hole mounting
• Capacitance characteristics: 45pF and 65pF ratings

The P3403ACL60 meets all these electrical and mechanical requirements, establishing it as a direct functional equivalent.

Parameter Comparison

Engineering Selection Recommendations

The P3403ACL60 is the direct substitute for the obsolete P3403AC60. Both components share identical electrical specifications and package configuration. The primary distinction is product status and regulatory compliance: the P3403ACL60 is active in production and ROHS3 compliant, whereas the P3403AC60 is obsolete and RoHS non-compliant. For new designs and ongoing system support, the P3403ACL60 is the appropriate selection. The P3403ACL60 is available in bulk packaging with confirmed inventory of 1652 units.

Frequently Asked Questions (FAQ)

Q: Can the P3403ACL60 directly replace the P3403AC60 in existing designs?

A: Yes. The P3403ACL60 is electrically and mechanically identical to the P3403AC60. All voltage ratings, current specifications, capacitance values, and package dimensions are equivalent. Direct substitution is supported without circuit modification.

Q: What is the difference between P3403AC60 and P3403ACL60?

A: The components are electrically identical. The primary differences are product status (P3403AC60 is obsolete; P3403ACL60 is active) and regulatory compliance (P3403ACL60 is ROHS3 compliant; P3403AC60 is RoHS non-compliant). The P3403ACL60 is supplied in bulk packaging.

Q: Are there any package or mounting differences?

A: No. Both parts use the 3-SIP package with TO-220 modified configuration and through-hole mounting. PCB layout and thermal management considerations remain unchanged.

Q: What certifications apply to the substitute part?

A: The P3403ACL60 is ROHS3 compliant and REACH unaffected. Both components share the same ECCN (EAR99) and HTSUS (8541.30.0080) classifications.

Q: Is the P3403ACL60 currently available?

A: Yes. The P3403ACL60 is in active production status with 1652 units in stock as new original inventory.