5KP70A-B Transient Voltage Suppressor Equivalent & Substitute Parts

Part Overview

The 5KP70A-B is an active Littelfuse Inc. Transient Voltage Suppressor (TVS) diode designed for general-purpose transient protection applications. This unidirectional zener diode operates with a 70V reverse standoff voltage and provides peak pulse power dissipation of 5000W. The part is ROHS3 compliant and rated for operating temperatures from -55°C to 175°C. Equivalent and substitute parts are identified to support procurement flexibility, inventory management, and supply chain continuity for applications requiring identical electrical performance and mechanical compatibility.

Substiute Parts

5KP70A-B

Littelfuse Inc.In Stock: 9625KP70A-B Datasheet

Current PartRFQ

5KP70A

Littelfuse Inc.In Stock: 48135KP70A Datasheet

MFR RecommendedRFQ

5KP70A-TP

Micro Commercial CoIn Stock: 12365KP70A-TP Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 5KP70A-B are qualified based on the following electrical and mechanical parameters:

• Voltage - Reverse Standoff (Typ): 70V
• Voltage - Breakdown (Min): 77.8V
• Voltage - Clamping (Max) @ Ipp: 113V
• Current - Peak Pulse (10/1000µs): 45.1A
• Power - Peak Pulse: 5000W (5kW)
• Operating Temperature Range: -55°C ~ 175°C (TJ)
• Mounting Type: Through Hole
• Type: Zener
• Unidirectional Channels: 1
• RoHS Status: ROHS3 Compliant

The 5KP70A (Littelfuse Inc., Cut Tape packaging) and 5KP70A-TP (Micro Commercial Co, Cut Tape packaging) meet all critical electrical parameters. Package variations (P600 vs. R-6 axial formats) are mechanical accommodations within the through-hole axial category and do not affect electrical substitution eligibility.

Parameter Comparison

Engineering Selection Recommendations

The 5KP70A (Littelfuse Inc.) is the primary substitute, offering identical electrical specifications and the same P600 axial package format. Both the main part and this substitute maintain ROHS3 compliance and active product status.

The 5KP70A-TP (Micro Commercial Co) qualifies as an electrical substitute with matching voltage and power ratings across all specified parameters. The R-6 axial package represents a mechanical variant within the through-hole axial category. Peak pulse current is not specified for this part; however, the power rating of 5000W and voltage parameters align with the main part's performance envelope. This part is ROHS3 compliant and maintains active product status.

Selection between these substitutes should be based on packaging requirements, lead-time availability, and procurement source preferences, as all three parts satisfy the electrical and thermal operating requirements.

Frequently Asked Questions (FAQ)

Q: Can the 5KP70A replace the 5KP70A-B in my circuit?

A: Yes. The 5KP70A maintains identical electrical specifications: 70V reverse standoff voltage, 77.8V minimum breakdown voltage, 113V maximum clamping voltage, 45.1A peak pulse current, and 5000W peak pulse power. Both use P600 axial through-hole packages and are ROHS3 compliant. The difference is packaging format (Cut Tape vs. Bulk).

Q: What is the difference between the P600 and R-6 packages?

A: Both P600 and R-6 are axial through-hole package formats for TVS diodes. The P600 is the standard package used in the main part and the 5KP70A substitute. The R-6 is an alternative axial format used by the 5KP70A-TP. Both are mechanically compatible with standard through-hole PCB layouts, though lead spacing and physical dimensions may vary. Verify PCB footprint compatibility before selection.

Q: Are all three parts electrically interchangeable?

A: The 5KP70A and 5KP70A-TP are electrically interchangeable with the 5KP70A-B based on the specified parameters: voltage ratings, power dissipation, temperature range, and unidirectional zener type. The 5KP70A-TP does not specify peak pulse current; however, the 5000W power rating and voltage parameters confirm electrical compatibility within the application envelope.

Q: Does packaging type affect electrical performance?

A: No. Packaging type (Bulk vs. Cut Tape) does not affect electrical performance. It affects only procurement, handling, and assembly processes. Package format (P600 vs. R-6) is a mechanical consideration for PCB layout compatibility but does not alter electrical characteristics.

Q: Are all substitutes ROHS3 compliant?

A: Yes. The 5KP70A-B, 5KP70A, and 5KP70A-TP are all ROHS3 compliant and suitable for applications requiring regulatory compliance in this category.