P0640SD Equivalent & Substitute Parts

Part Overview

The P0640SD is a 58V off-state, 1 kA peak pulse TVS thyristor manufactured by Littelfuse Inc. in the SIDACtor® series, housed in a DO-214AA (SMB) surface mount package. This component is designed for transient voltage suppression applications requiring high current handling capability.

The P0640SD is classified as obsolete. Locating equivalent or substitute parts is necessary to support ongoing maintenance, repair, and new design requirements where this component specification remains applicable.

Substiute Parts

P0640SD

Littelfuse Inc.In Stock: 851P0640SD Datasheet

Current PartRFQ

P0640SDLRP

Littelfuse Inc.In Stock: 32872P0640SDLRP Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the P0640SD is determined by matching the following critical electrical and mechanical parameters:

• Voltage - Off State: 58V
• Voltage - Breakover: 77V
• Voltage - On State: 4V
• Current - Peak Pulse (8/20µs): 1 kA
• Current - Peak Pulse (10/1000µs): 200A
• Current - Hold (Ih): 50 mA
• Capacitance: 160 pF
• Package / Case: DO-214AA, SMB
• Number of Elements: 1
• Mounting Type: Surface Mount

The P0640SDLRP meets all these electrical and mechanical requirements and is therefore a direct functional equivalent. The primary difference is packaging format (Tape & Reel vs. bulk) and product status (Active vs. Obsolete).

Parameter Comparison

Engineering Selection Recommendations

The P0640SDLRP is the direct substitute for the P0640SD. All electrical and mechanical parameters are identical. Selection between these parts should be based on the following factors:

Product Status: The P0640SD is obsolete. The P0640SDLRP is active and currently in production, making it the preferred choice for new designs and ongoing procurement.

Compliance: The P0640SDLRP is ROHS3 compliant, whereas the P0640SD is RoHS non-compliant. Applications subject to RoHS regulations must use the P0640SDLRP.

Packaging: The P0640SDLRP is supplied in Tape & Reel format, suitable for automated assembly. The P0640SD was supplied in bulk packaging. Tape & Reel format is standard for high-volume production environments.

Availability: The P0640SDLRP has significantly higher inventory availability (32,785 pcs) compared to the P0640SD (764 pcs), supporting both immediate and sustained procurement needs.

Frequently Asked Questions (FAQ)

Q: Can the P0640SDLRP be used as a direct replacement for the P0640SD?

A: Yes. All electrical parameters (voltage ratings, current ratings, capacitance) and mechanical parameters (package type, mounting method) are identical. The P0640SDLRP is electrically and mechanically interchangeable with the P0640SD.

Q: What is the difference between P0640SD and P0640SDLRP?

A: The primary differences are product status, RoHS compliance, and packaging format. The P0640SD is obsolete and RoHS non-compliant, supplied in bulk. The P0640SDLRP is active, ROHS3 compliant, and supplied in Tape & Reel format. Electrical and mechanical specifications are identical.

Q: Is the P0640SDLRP suitable for automated assembly?

A: Yes. The P0640SDLRP is supplied in Tape & Reel (TR) packaging, which is the standard format for automated surface mount assembly processes.

Q: Does the P0640SDLRP meet RoHS requirements?

A: Yes. The P0640SDLRP is ROHS3 compliant. Applications requiring RoHS compliance must use the P0640SDLRP rather than the obsolete P0640SD.

Q: Are there any differences in electrical performance between these parts?

A: No. Both parts have identical electrical specifications: 58V off-state voltage, 77V breakover voltage, 4V on-state voltage, 1 kA peak pulse current (8/20µs), 200A peak pulse current (10/1000µs), 50 mA hold current, and 160 pF capacitance.

Q: Can I use the P0640SDLRP in existing designs that specified the P0640SD?

A: Yes. The P0640SDLRP is a direct functional equivalent. No circuit modifications are required. The identical electrical and mechanical parameters ensure drop-in compatibility.