CR4802AB Equivalent & Substitute Parts

Part Overview

The CR4802AB is a Transient Voltage Suppressor (TVS) diode manufactured by Littelfuse Inc., designed for general-purpose voltage protection applications. This component features a bidirectional 2-channel configuration in a TO-220 Modified package with a reverse standoff voltage of 220V and minimum breakdown voltage of 300V. The CR4802AB is classified as obsolete, making identification of suitable substitute components essential for ongoing system maintenance and new design implementations where this protection topology is required.

Substiute Parts

CR4802AB

Littelfuse Inc.In Stock: 1186CR4802AB Datasheet

Current PartRFQ

P4802ABL

Littelfuse Inc.In Stock: 1157P4802ABL Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CR4802AB is determined by the following critical parameters that must align between the original and substitute component:

Package Compatibility: Both the main part and substitute must use the 3-SIP TO-220 Modified package to ensure mechanical fit and pin compatibility on existing PCBs.

Voltage Protection Range: The substitute must maintain the 220V reverse standoff voltage and 300V minimum breakdown voltage specifications to provide equivalent transient protection performance.

Channel Configuration: The bidirectional 2-channel topology must be preserved to match the original circuit protection scheme.

Mounting Type: Through-hole mounting must be maintained for compatibility with existing board designs.

Temperature Operating Range: The substitute must support the -55°C to 175°C operating temperature range to function across the same environmental conditions.

The P4802ABL qualifies as a substitute based on these parameters: it maintains the 3-SIP TO-220 Modified package, provides 220V off-state voltage with 300V breakover voltage, features 2-element configuration, supports through-hole mounting, and operates within the required temperature range.

Parameter Comparison

Engineering Selection Recommendations

The P4802ABL is the manufacturer-recommended substitute for the obsolete CR4802AB. Selection of this substitute is supported by the following engineering factors:

Product Status: The CR4802AB is obsolete, whereas the P4802ABL maintains active product status with current manufacturing and supply chain availability.

Regulatory Compliance: The P4802ABL achieves ROHS3 compliance, addressing modern regulatory requirements. The original CR4802AB is RoHS non-compliant, making the substitute preferable for new designs and systems subject to RoHS directives.

Package and Electrical Compatibility: Both components share identical mechanical packaging (3-SIP TO-220 Modified) and core electrical specifications (220V standoff/off-state voltage, 300V breakdown/breakover voltage, 2-element configuration), ensuring direct substitution without PCB redesign.

Operational Range: The P4802ABL supports the same -55°C to 175°C operating temperature range, maintaining thermal performance equivalence.

Supply Chain Continuity: With 1130 pieces in stock, the P4802ABL provides immediate availability for replacement and new production requirements.

Frequently Asked Questions (FAQ)

Q: Can the P4802ABL be used as a direct replacement for CR4802AB on existing PCBs?

A: Yes. Both components use the 3-SIP TO-220 Modified package with identical pin configuration and spacing. No PCB modifications are required for mechanical or electrical substitution.

Q: What are the key electrical differences between CR4802AB and P4802ABL?

A: The CR4802AB is a Zener-type TVS diode, while the P4802ABL is a thyristor-based TVS (SIDACtor®). Both maintain the same 220V standoff voltage and 300V breakdown voltage for the primary protection channel. The P4802ABL offers additional voltage options (440V off-state, 600V breakover) and higher peak pulse current capability (250A at 8/20µs versus unspecified for CR4802AB), providing enhanced protection performance.

Q: Are there temperature operating range differences?

A: No. Both components operate across the -55°C to 175°C junction temperature range, ensuring equivalent thermal performance in the same applications.

Q: Does the P4802ABL require different circuit design considerations?

A: The P4802ABL's thyristor architecture may exhibit different transient response characteristics compared to the Zener-based CR4802AB. Circuit validation is necessary to confirm performance equivalence in the specific application topology.

Q: What is the RoHS compliance status difference?

A: The CR4802AB is RoHS non-compliant. The P4802ABL is ROHS3 compliant, making it suitable for applications and markets requiring RoHS certification.

Q: Is the P4802ABL available in the same packaging options?

A: Yes. The P4802ABL is supplied in bulk packaging in the 3-SIP TO-220 Modified package, matching the original component's form factor.