5KP90A-B Transient Voltage Suppressor Equivalent & Substitute Parts

Part Overview

The 5KP90A-B is an active Transient Voltage Suppressor (TVS) diode manufactured by Littelfuse Inc., designed for general-purpose voltage transient protection in through-hole applications. This unidirectional Zener diode provides peak pulse power dissipation of 5000W with a 90V reverse standoff voltage and 146V maximum clamping voltage. The part is ROHS3 compliant and carries an unlimited moisture sensitivity level (MSL 1), making it suitable for standard industrial and commercial environments. Equivalent and substitute parts are identified based on matching electrical performance parameters and compatible mechanical packaging within the TVS diode category.

Substiute Parts

5KP90A-B

Littelfuse Inc.In Stock: 9295KP90A-B Datasheet

Current PartRFQ

5KP90A

Littelfuse Inc.In Stock: 44665KP90A Datasheet

MFR RecommendedRFQ

15KP90A-TP

Micro Commercial CoIn Stock: 127815KP90A-TP Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 5KP90A-B are identified based on strict electrical parameter matching within the TVS diode category. The substitution logic is governed by the following key parameters:

• Voltage - Reverse Standoff (Typ): 90V — determines the protection threshold
• Voltage - Clamping (Max) @ Ipp: 146V — defines maximum transient voltage clamping performance
• Voltage - Breakdown (Min): 100V — establishes minimum trigger voltage
• Operating Temperature Range: -55°C to 175°C (TJ) — ensures thermal compatibility
• Mounting Type: Through Hole — maintains mechanical compatibility
• Unidirectional Channels: 1 — confirms single-direction protection topology

Substitute parts must maintain identical or equivalent electrical performance across these parameters. Packaging variations (P600 vs. R-6) and power ratings are secondary considerations when primary electrical specifications align.

Parameter Comparison

Engineering Selection Recommendations

5KP90A (Littelfuse Inc.): This substitute maintains identical electrical specifications and package form factor (P600, Axial) to the 5KP90A-B. The primary difference is packaging format (Cut Tape vs. Bulk). Both parts are ROHS3 compliant with MSL 1 rating and equivalent thermal operating ranges. This substitute is directly interchangeable for applications requiring the same power dissipation (5000W) and current handling (34.9A).

15KP90A-TP (Micro Commercial Co): This substitute matches all critical voltage parameters (90V standoff, 100V breakdown, 146V clamping) and thermal operating range (-55 to 175°C). The primary distinction is elevated peak pulse power rating (15000W vs. 5000W) and different package form factor (R-6 vs. P600). This substitute is suitable for applications where higher power dissipation capability is beneficial or required. ROHS3 compliance and MSL 1 rating are maintained. Physical package differences require mechanical compatibility verification in the target application.

Both substitutes carry Active product status and meet all regulatory compliance requirements (ROHS3, REACH Unaffected, EAR99 ECCN classification).

Frequently Asked Questions (FAQ)

Q: Can 5KP90A replace 5KP90A-B directly? A: Yes. Both parts share identical electrical specifications (90V standoff, 146V clamping, 34.9A peak pulse current, 5000W power rating) and the same P600 axial package. The difference is packaging format (Cut Tape vs. Bulk). No circuit modifications are required.

Q: What is the key difference between 5KP90A-B and 15KP90A-TP? A: The 15KP90A-TP has a higher peak pulse power rating (15000W vs. 5000W) and uses a different package form factor (R-6 vs. P600). All voltage parameters remain identical. The R-6 package requires mechanical compatibility verification in the target PCB layout.

Q: Are all three parts ROHS3 compliant? A: Yes. The 5KP90A-B, 5KP90A, and 15KP90A-TP are all ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity level.

Q: Can I use 15KP90A-TP in a circuit designed for 5KP90A-B? A: Electrically, yes. The voltage protection characteristics are identical. However, the R-6 package form factor differs from P600, requiring verification that the physical dimensions and lead spacing are compatible with the PCB design and through-hole footprint.

Q: What determines substitutability for TVS diodes in this category? A: Substitutability is determined by matching reverse standoff voltage, breakdown voltage, clamping voltage, operating temperature range, and mounting type. Peak pulse power rating and package form factor are secondary considerations that depend on application-specific requirements.

Q: Are there inventory differences between these parts? A: Yes. 5KP90A-B (Bulk) has 828 pcs in stock, 5KP90A (Cut Tape) has 4400 pcs, and 15KP90A-TP (Cut Tape) has 1218 pcs. Packaging format and inventory levels may influence procurement decisions.