P3500SBRP Equivalent & Substitute Parts

Part Overview

The P3500SBRP is a 320V off-state, 250A peak pulse TVS thyristor manufactured by Littelfuse in the SIDACtor® series, housed in a DO-214AA (SMB) surface mount package. This component is classified as obsolete, which necessitates identification of active equivalent parts to maintain design continuity and ensure supply chain availability for new production and field replacements.

Substiute Parts

P3500SBRP

LittelfuseIn Stock: 4738P3500SBRP Datasheet

Current PartRFQ

P3500SBLRP

Littelfuse Inc.In Stock: 55437P3500SBLRP Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the P3500SBRP is determined by electrical and mechanical parameter equivalence across the following criteria:

Voltage specifications (breakover, off-state, and on-state) must remain identical to ensure proper transient suppression performance in the protected circuit. Peak pulse current ratings at both 8/20µs and 10/1000µs time constants must match to guarantee equivalent energy dissipation capability. Hold current (Ih) must be equivalent to maintain consistent device latching behavior. Capacitance must remain within specification to avoid circuit impedance changes. Package and mounting type must be identical to ensure PCB compatibility without design modification. Number of elements must be the same to preserve circuit topology.

The P3500SBLRP meets all these criteria as a direct electrical and mechanical equivalent to the P3500SBRP, with the primary distinction being product status and compliance certification.

Parameter Comparison

Engineering Selection Recommendations

The P3500SBLRP is the direct equivalent for the obsolete P3500SBRP. Both parts are electrically and mechanically identical across all functional parameters. The P3500SBLRP is currently in active production status with significantly higher inventory availability (55,400 pcs vs. 4,630 pcs). The P3500SBLRP carries ROHS3 compliance certification, whereas the P3500SBRP is non-compliant. For new designs and production applications, the P3500SBLRP is the appropriate selection. For legacy system maintenance where RoHS compliance is not a requirement, either part may be used interchangeably based on availability and supply chain constraints.

Frequently Asked Questions (FAQ)

Q: Can the P3500SBLRP be used as a direct replacement for the P3500SBRP?

A: Yes. The P3500SBLRP is electrically and mechanically identical to the P3500SBRP. All voltage ratings, current specifications, capacitance, package type, and mounting configuration are equivalent. No circuit design changes are required.

Q: What is the primary difference between these two parts?

A: The P3500SBRP is obsolete, while the P3500SBLRP is active production. The P3500SBLRP also carries ROHS3 compliance certification. Electrical and mechanical specifications are identical.

Q: Are there any packaging differences between P3500SBRP and P3500SBLRP?

A: Both parts use the DO-214AA (SMB) surface mount package. The P3500SBLRP is supplied in Cut Tape (CT) and Digi-Reel® packaging formats, while the P3500SBRP packaging format is not specified in the available data.

Q: What parameters must remain identical for substitution?

A: Breakover voltage (400V), off-state voltage (320V), on-state voltage (4V), peak pulse current at 8/20µs (250A), peak pulse current at 10/1000µs (80A), hold current (150mA), capacitance (40pF), package type (DO-214AA), and number of elements (1) must all match exactly.

Q: Is the P3500SBLRP suitable for RoHS-compliant applications?

A: Yes. The P3500SBLRP carries ROHS3 compliance certification and is suitable for applications requiring RoHS compliance. The P3500SBRP is non-compliant.