P0640EC Equivalent & Substitute Parts

Part Overview

The P0640EC is a 58V off-state thyristor transient voltage suppressor (TVS) manufactured by Littelfuse Inc. in the SIDACtor® series. This component is designed for transient overvoltage protection applications requiring 400A peak pulse current capability in a TO-226-2 package configuration. The P0640EC is classified as obsolete, making identification of active equivalent parts essential for ongoing design support and procurement continuity.

Substiute Parts

P0640EC

Littelfuse Inc.In Stock: 2305P0640EC Datasheet

Current PartRFQ

P0640ECL

Littelfuse Inc.In Stock: 20196P0640ECL Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the obsolete P0640EC is determined by electrical and mechanical parameter equivalence within the TVS thyristor category. The following parameters establish substitution validity:

• Voltage - Breakover: 77V
• Voltage - Off State: 58V
• Voltage - On State: 4V
• Current - Peak Pulse (8/20µs): 400A
• Current - Peak Pulse (10/1000µs): 100A
• Current - Hold (Ih): 150mA
• Capacitance: 155pF
• Package / Case: TO-226-2, TO-92-2 (TO-226AC)
• Number of Elements: 1

The P0640ECL meets all electrical and mechanical requirements for direct substitution. Both parts are manufactured by Littelfuse Inc. within the SIDACtor® series and share identical electrical performance specifications and package configurations.

Parameter Comparison

Engineering Selection Recommendations

The P0640ECL is the direct active equivalent for the obsolete P0640EC. All electrical parameters, mechanical specifications, and package configurations are identical. The P0640ECL maintains active product status with Littelfuse Inc. and carries ROHS3 compliance certification, whereas the P0640EC is RoHS non-compliant. For new designs and ongoing procurement, the P0640ECL is the appropriate selection. Existing designs using the P0640EC can transition to the P0640ECL without circuit modification, as electrical performance and pinout are fully compatible.

Frequently Asked Questions (FAQ)

Q: Can the P0640ECL directly replace the P0640EC in existing circuits?

A: Yes. The P0640ECL is electrically and mechanically identical to the P0640EC. All voltage ratings, current specifications, capacitance values, and package configurations match exactly. No circuit redesign is required.

Q: What is the difference between P0640EC and P0640ECL?

A: The primary differences are product status and compliance certification. The P0640EC is obsolete and RoHS non-compliant. The P0640ECL is active and ROHS3 compliant. Electrical and mechanical specifications are identical.

Q: Are there packaging differences between these parts?

A: No. Both parts use the same TO-226-2 and TO-92-2 (TO-226AC) package configurations. Pinout and physical dimensions are identical.

Q: Why is the P0640EC obsolete?

A: The P0640EC has been superseded by the P0640ECL. Littelfuse Inc. maintains the P0640ECL as the active product in this specification class.

Q: What compliance certifications apply to the P0640ECL?

A: The P0640ECL is ROHS3 compliant and REACH unaffected. The obsolete P0640EC is RoHS non-compliant.

Q: Can I use the P0640ECL in applications originally designed for the P0640EC?

A: Yes. Electrical performance, current ratings, voltage specifications, and package form factor are fully compatible. Direct substitution is valid for all applications.