5KP30A-B Transient Voltage Suppressor Equivalent & Substitute Parts

Part Overview

The 5KP30A-B is an active Transient Voltage Suppressor (TVS) diode manufactured by Littelfuse Inc., designed for general-purpose overvoltage protection applications. This unidirectional Zener diode operates with a 30V reverse standoff voltage and provides 5000W peak pulse power dissipation in a through-hole P600 axial package. The part is ROHS3 compliant and currently in active production status with 922 units in stock. Equivalent and substitute parts are identified based on matching electrical specifications and compatible packaging configurations to support procurement flexibility and supply chain continuity.

Substiute Parts

5KP30A-B

Littelfuse Inc.In Stock: 9985KP30A-B Datasheet

Current PartRFQ

5KP30A

Diotec SemiconductorIn Stock: 44475KP30A Datasheet

MFR RecommendedRFQ

5KP30A-TP

Micro Commercial CoIn Stock: 26095KP30A-TP Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 5KP30A-B are qualified based on the following critical electrical and mechanical parameters:

Electrical Compatibility Criteria:

• Voltage - Reverse Standoff (Typ): 30V
• Voltage - Breakdown (Min): 33.3V
• Voltage - Clamping (Max) @ Ipp: 48.4V
• Power - Peak Pulse: 5000W (5kW)
• Type: Zener, Unidirectional (1 channel)
• Applications: General Purpose

Mechanical Compatibility Criteria:

• Mounting Type: Through Hole
• Package / Case: P600 or R-6 Axial configurations
• RoHS Status: ROHS3 Compliant

The identified substitutes maintain identical voltage specifications and power ratings while accommodating variations in packaging format (Bulk, Tape & Reel, Cut Tape) and minor differences in peak pulse current ratings within acceptable operational tolerances.

Parameter Comparison

Engineering Selection Recommendations

All three parts maintain active product status and ROHS3 compliance, qualifying them for equivalent use in general-purpose TVS applications with matching 30V voltage specifications and 5000W power ratings.

5KP30A (Diotec Semiconductor): Offers the highest inventory availability at 4345 units in Tape & Reel packaging format. Peak pulse current specification of 103A is within acceptable tolerance of the primary part's 105.4A rating. Operating temperature minimum of -50°C is suitable for most industrial applications, though the primary part's -55°C lower limit provides extended cold-temperature capability.

5KP30A-TP (Micro Commercial Co): Provides equivalent electrical performance with identical operating temperature range (-55°C ~ 175°C) matching the primary part. Available in Cut Tape packaging with 2530 units in stock. Peak pulse current is not specified in available documentation. R-6 axial package configuration is mechanically compatible with P600 through-hole mounting requirements.

Selection between substitutes should prioritize packaging format compatibility with assembly processes and inventory availability requirements.

Frequently Asked Questions (FAQ)

Q: Can 5KP30A (Diotec) be used as a direct replacement for 5KP30A-B (Littelfuse)?

A: Yes. Both parts share identical voltage specifications (30V standoff, 33.3V breakdown, 48.4V clamping) and power ratings (5000W). The peak pulse current difference (103A vs 105.4A) is within acceptable operational tolerance for general-purpose TVS applications. Packaging format differs (Tape & Reel vs Bulk), which may affect procurement and assembly processes but not electrical compatibility.

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

A: Both P600 and R-6 are through-hole axial package configurations for TVS diodes. The designations refer to different physical dimensions and lead spacing. Mechanical compatibility depends on PCB footprint design. Verify that the selected substitute's package dimensions match the intended PCB layout before implementation.

Q: Does the -50°C to 175°C operating range of the Diotec part affect compatibility?

A: The Diotec 5KP30A operates from -50°C minimum, compared to -55°C for the Littelfuse primary part. For applications requiring operation below -50°C, the Littelfuse 5KP30A-B or Micro Commercial Co 5KP30A-TP are required. For standard industrial temperature ranges, the -50°C minimum is typically acceptable.

Q: Are all three parts ROHS3 compliant?

A: Yes. The 5KP30A-B (Littelfuse), 5KP30A (Diotec), and 5KP30A-TP (Micro Commercial Co) are all ROHS3 compliant, meeting environmental and regulatory requirements for electronic component manufacturing and use.

Q: What packaging formats are available for these substitutes?

A: 5KP30A-B is supplied in Bulk format. 5KP30A (Diotec) is available in Tape & Reel (TR) format. 5KP30A-TP (Micro Commercial Co) is supplied in Cut Tape (CT) format. Selection should align with assembly equipment capabilities and procurement workflows.