5KP12A-B Equivalent & Substitute Parts

Part Overview

The 5KP12A-B is a unidirectional Transient Voltage Suppressor (TVS) diode manufactured by Littelfuse Inc., designed for general-purpose transient voltage protection applications. This through-hole component features a 12V reverse standoff voltage with a 19.9V maximum clamping voltage and 256.3A peak pulse current capability. The part is currently in active production status with full RoHS3 compliance and unlimited moisture sensitivity rating. Substitute parts are identified when packaging format changes are required or when inventory availability necessitates alternative sourcing while maintaining identical electrical and mechanical specifications.

Substiute Parts

5KP12A-B

Littelfuse Inc.In Stock: 12115KP12A-B Datasheet

Current PartRFQ

5KP12A

Littelfuse Inc.In Stock: 45015KP12A Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 5KP12A-B is determined by strict equivalence across the following critical parameters:

• Voltage - Reverse Standoff (Typ): 12V
• Voltage - Breakdown (Min): 13.3V
• Voltage - Clamping (Max) @ Ipp: 19.9V
• Current - Peak Pulse (10/1000µs): 256.3A
• Power - Peak Pulse: 5000W (5kW)
• Unidirectional Channels: 1
• Mounting Type: Through Hole
• Package / Case: P600, Axial
• Operating Temperature Range: -55°C to 175°C (TJ)

The primary substitute identified is 5KP12A, which maintains identical electrical specifications and mechanical form factor. The distinction between 5KP12A-B and 5KP12A is packaging format: the main part is supplied in Bulk packaging, while the substitute is available in Cut Tape (CT) format. Both parts are manufactured by Littelfuse Inc., carry Active product status, and meet all compliance requirements including RoHS3 and REACH Unaffected designations.

Parameter Comparison

Engineering Selection Recommendations

Both 5KP12A-B and 5KP12A are Active status components manufactured by Littelfuse Inc. with full RoHS3 compliance and REACH Unaffected designation. Selection between these parts is determined by packaging and procurement requirements rather than electrical or mechanical performance differences.

The 5KP12A-B in Bulk packaging is suitable for high-volume manufacturing environments where components are supplied in loose form for automated assembly processes. The 5KP12A in Cut Tape (CT) format is appropriate for applications requiring tape-and-reel delivery for pick-and-place machine compatibility or for lower-volume procurement scenarios.

Both parts satisfy identical electrical performance criteria for 12V transient voltage suppression applications with 5kW peak pulse power dissipation capability and -55°C to 175°C operating temperature range.

Frequently Asked Questions (FAQ)

Q: Can 5KP12A be used as a direct replacement for 5KP12A-B?

A: Yes. Both parts are electrically and mechanically identical. The only difference is packaging format: 5KP12A-B is supplied in Bulk, while 5KP12A is supplied in Cut Tape (CT). Direct substitution is valid provided the receiving assembly process is compatible with the tape-and-reel format.

Q: What does the packaging format difference mean for assembly?

A: Bulk packaging supplies loose components suitable for manual assembly or bulk-fed automated systems. Cut Tape (CT) packaging supplies components on continuous tape in reels, optimized for pick-and-place machine assembly. The electrical and mechanical specifications remain identical.

Q: Are there any compliance or certification differences between these parts?

A: No. Both 5KP12A-B and 5KP12A carry identical RoHS3 compliance, REACH Unaffected status, and MSL 1 (Unlimited) moisture sensitivity rating.

Q: What are the critical parameters that define substitution eligibility for this TVS diode?

A: Substitution eligibility is determined by: 12V reverse standoff voltage, 13.3V minimum breakdown voltage, 19.9V maximum clamping voltage, 256.3A peak pulse current, 5000W peak pulse power, unidirectional configuration, through-hole mounting, P600 axial package, and -55°C to 175°C operating temperature range.

Q: Can parts with different voltage ratings substitute for the 5KP12A-B?

A: No. Voltage parameters (reverse standoff, breakdown, and clamping) are critical to circuit protection function and must remain within specified tolerances. Parts with different voltage ratings are not substitutes.