P1803ACRP Equivalent & Substitute Parts

Part Overview

The P1803ACRP is a three-element SIDACtor® thyristor transient voltage suppressor manufactured by Littelfuse Inc., rated for 150V off-state operation with 400A peak pulse current capability in a TO-220 Modified package. This component is classified as obsolete, which necessitates identification of active equivalent alternatives that maintain identical electrical and mechanical specifications for continued system support and new design implementations.

Substiute Parts

P1803ACRP

Littelfuse Inc.In Stock: 1119P1803ACRP Datasheet

Current PartRFQ

P1803ACL

Littelfuse Inc.In Stock: 5307P1803ACL Datasheet

DirectRFQ

P1803ACLRP

Littelfuse Inc.In Stock: 764P1803ACLRP Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the P1803ACRP is determined by strict equivalence across the following critical parameters: breakover voltage (210V), off-state voltage (150V), on-state voltage (8V), peak pulse current ratings (400A at 8/20µs and 100A at 10/1000µs), hold current (150mA), element count (3), capacitance values (55pF and 85pF), package type (3-SIP), and mounting configuration (Through Hole TO-220 Modified).

The identified substitute parts P1803ACL and P1803ACLRP maintain complete electrical and mechanical equivalence to the main part. Both substitutes differ only in packaging format (Bulk and Tape & Reel respectively) and product status (Active versus Obsolete), with no deviation in electrical performance or physical form factor.

Parameter Comparison

Engineering Selection Recommendations

For applications currently using the P1803ACRP, transition to either P1803ACL or P1803ACLRP is supported by complete electrical and mechanical equivalence. Both substitute parts are active products with ROHS3 compliance and REACH unaffected status, providing improved regulatory alignment compared to the obsolete main part.

Selection between P1803ACL and P1803ACLRP depends on procurement requirements: P1803ACL is supplied in Bulk packaging, while P1803ACLRP is supplied in Tape & Reel format. Both maintain identical electrical performance and physical form factor, ensuring direct interchangeability in circuit implementations.

Frequently Asked Questions (FAQ)

Q: Can P1803ACL and P1803ACLRP be used interchangeably with P1803ACRP?

A: Yes. Both substitute parts maintain complete electrical equivalence across all specified parameters including voltage ratings, current capabilities, and capacitance values. Physical form factor and mounting configuration are identical, enabling direct substitution.

Q: What is the difference between P1803ACL and P1803ACLRP?

A: The parts are electrically and mechanically identical. The difference is packaging format: P1803ACL is supplied in Bulk packaging, while P1803ACLRP is supplied in Tape & Reel format. Selection depends on procurement and assembly process requirements.

Q: Why is the P1803ACRP listed as obsolete?

A: The P1803ACRP is classified as obsolete by the manufacturer. Active equivalent alternatives (P1803ACL and P1803ACLRP) are available with identical specifications and improved regulatory compliance.

Q: Are there compliance differences between the main part and substitutes?

A: Yes. The P1803ACRP is RoHS non-compliant, while both P1803ACL and P1803ACLRP are ROHS3 compliant and REACH unaffected. For applications requiring regulatory compliance, the substitute parts are preferred.

Q: Will substituting these parts require PCB or assembly modifications?

A: No. All three parts share identical package type (3-SIP), mounting type (Through Hole), and supplier device package (TO-220 Modified), ensuring no modifications to PCB layout or assembly processes.