P1803AARP Equivalent & Substitute Parts

Part Overview

The P1803AARP is a 150V off-state, 150A 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 P1803AARP is classified as obsolete, making identification of active equivalent parts necessary for ongoing design support and procurement.

Substiute Parts

P1803AARP

Littelfuse Inc.In Stock: 858P1803AARP Datasheet

Current PartRFQ

P1803AAL

Littelfuse Inc.In Stock: 5365P1803AAL Datasheet

DirectRFQ

P1803AALRP

Littelfuse Inc.In Stock: 924P1803AALRP Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the P1803AARP are determined by electrical and mechanical parameter equivalence. The following criteria establish substitutability:

• Voltage ratings (breakover, off-state, and on-state) must match exactly
• Peak pulse current specifications (8/20µs and 10/1000µs) must match exactly
• Hold current (Ih) must match exactly
• Number of elements must be 3
• Capacitance range must be 30pF to 40pF
• Package type must be 3-SIP with TO-220 Modified supplier device package
• Mounting type must be through hole

All identified substitutes meet these criteria and are manufactured by Littelfuse Inc. within the SIDACtor® series.

Parameter Comparison

Engineering Selection Recommendations

Both P1803AAL and P1803AALRP are direct electrical and mechanical equivalents to the obsolete P1803AARP. Selection between these substitutes is determined by packaging and compliance requirements:

P1803AAL is supplied in bulk packaging and carries ROHS3 compliance certification. This part is suitable for applications where individual component handling and RoHS3 compliance are required.

P1803AALRP is supplied in Tape & Reel format and carries ROHS3 compliance certification. This part is suitable for high-volume automated assembly processes requiring tape and reel packaging.

Both substitutes are active products with current manufacturing status and full REACH compliance documentation. Electrical performance and thermal characteristics are identical to the P1803AARP across all specified parameters.

Frequently Asked Questions (FAQ)

Q: Can P1803AAL or P1803AALRP be used as direct replacements for P1803AARP?

A: Yes. Both parts are electrically and mechanically equivalent. All voltage ratings, current specifications, and package dimensions are identical. The primary differences are product status (active vs. obsolete), RoHS compliance level, and packaging format.

Q: What is the difference between P1803AAL and P1803AALRP?

A: The electrical specifications are identical. P1803AAL is supplied in bulk packaging, while P1803AALRP is supplied in Tape & Reel format. Selection depends on assembly process requirements and volume considerations.

Q: Are there RoHS compliance differences between the substitutes?

A: The P1803AARP is RoHS non-compliant. Both P1803AAL and P1803AALRP are ROHS3 compliant. If RoHS3 compliance is required for your application, either substitute is acceptable.

Q: Does packaging format affect electrical performance?

A: No. Packaging format (bulk vs. Tape & Reel) does not affect electrical performance, voltage ratings, current handling, or thermal characteristics. Selection is based on manufacturing and assembly process requirements.

Q: Can these parts be used interchangeably in PCB designs?

A: Yes. All three parts use identical 3-SIP package configuration with TO-220 Modified supplier device package. PCB footprints, lead spacing, and mounting requirements are identical.