P4802AB Equivalent & Substitute Parts

Part Overview

The P4802AB is a Transient Voltage Suppressor (TVS) thyristor manufactured by Littelfuse Inc. under the SIDACtor® series. This component is designed for overvoltage protection applications requiring 220V/440V off-state voltage ratings with 250A peak pulse current capability in a 3-SIP through-hole package. The P4802AB is classified as obsolete, making identification of compatible substitute parts essential for ongoing system maintenance and new design implementations.

Substiute Parts

P4802AB

Littelfuse Inc.In Stock: 29633P4802AB Datasheet

Current PartRFQ

P4802ABL

Littelfuse Inc.In Stock: 1157P4802ABL Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the P4802AB is determined by electrical and mechanical parameter equivalence across the following criteria:

• Voltage ratings (breakover and off-state) must match exactly: 300V/600V breakover and 220V/440V off-state
• Peak pulse current capability must be identical: 250 A at 8/20µs pulse duration
• On-state voltage performance must be equivalent: 4 V maximum
• Hold current specification must match: 150 mA minimum
• Package and mounting configuration must be identical: 3-SIP through-hole in TO-220 Modified form factor
• Number of internal elements must be consistent: 2 elements

The P4802ABL qualifies as a direct substitute based on complete electrical and mechanical parameter alignment with the P4802AB.

Parameter Comparison

Engineering Selection Recommendations

The P4802ABL is the qualified substitute for the P4802AB based on complete electrical and mechanical parameter equivalence. The P4802ABL offers the additional advantage of active product status, ensuring continued availability and supply chain reliability compared to the obsolete P4802AB.

The P4802ABL provides improved regulatory compliance with ROHS3 certification and REACH unaffected status, making it suitable for applications requiring modern environmental and safety standards. All critical electrical parameters—voltage ratings, current handling, on-state performance, and hold current—are identical between the two parts, ensuring direct functional compatibility in existing circuit designs.

Frequently Asked Questions (FAQ)

Q: Can the P4802ABL directly replace the P4802AB in existing designs?

A: Yes. The P4802ABL is electrically and mechanically equivalent to the P4802AB across all specified parameters, including voltage ratings (300V/600V breakover, 220V/440V off-state), peak pulse current (250 A at 8/20µs), on-state voltage (4 V), hold current (150 mA), and package configuration (3-SIP through-hole TO-220 Modified). No circuit modifications are required.

Q: What is the primary reason to transition from P4802AB to P4802ABL?

A: The P4802AB is classified as obsolete, creating supply chain risk. The P4802ABL is an active product with equivalent specifications and improved regulatory compliance (ROHS3 Compliant, REACH Unaffected), providing long-term availability and support.

Q: Are there any packaging differences between these parts?

A: No. Both the P4802AB and P4802ABL use identical 3-SIP through-hole packaging in TO-220 Modified form factor. The P4802ABL is supplied in bulk packaging, while the P4802AB was supplied in standard packaging. This does not affect component functionality or PCB integration.

Q: Do the electrical performance characteristics differ between P4802AB and P4802ABL?

A: No. All electrical parameters are identical: breakover voltage, off-state voltage, on-state voltage, peak pulse current ratings, hold current, number of elements, and capacitance specifications match exactly between the two parts.

Q: Is the P4802ABL suitable for new designs?

A: Yes. The P4802ABL is an active product with full regulatory compliance and is recommended for all new TVS thyristor applications requiring 220V/440V off-state protection with 250A peak pulse current capability in a 3-SIP package.