15KP150A-TP Transient Voltage Suppressor (TVS) Diode - Equivalent & Substitute Parts

Part Overview

The 15KP150A-TP is an active Transient Voltage Suppressor (TVS) diode manufactured by Micro Commercial Co, designed for general-purpose transient voltage protection in through-hole applications. This unidirectional Zener-type TVS diode features a 150V reverse standoff voltage with a 243V maximum clamping voltage and 15kW peak pulse power rating. The component is ROHS3 compliant and rated for operating temperatures from -55°C to 175°C. Substitute parts are identified based on matching critical electrical parameters and mechanical compatibility within the TVS diode category.

Substiute Parts

15KP150A-TP

Micro Commercial CoIn Stock: 93215KP150A-TP Datasheet

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15KPA150A

MDE Semiconductor IncIn Stock: 175615KPA150A Datasheet

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5KP150A

Littelfuse Inc.In Stock: 33925KP150A Datasheet

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5KP150A-E3/54

Vishay General Semiconductor - Diodes DivisionIn Stock: 82155KP150A-E3/54 Datasheet

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BZW50-150

STMicroelectronicsIn Stock: 1212BZW50-150 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 15KP150A-TP is determined by the following critical parameters:

• Voltage - Reverse Standoff (Typ): 150V
• Voltage - Clamping (Max) @ Ipp: 243V ±tolerance
• Power - Peak Pulse: 15000W (15kW) or higher
• Mounting Type: Through Hole
• Type: Zener, Unidirectional
• Operating Temperature Range: -55°C ~ 175°C minimum

Substitute parts are grouped into two categories based on power rating alignment:

Category A (15kW Power Rating): 15KPA150A - Direct electrical equivalent with matching 15kW peak pulse power and identical voltage specifications.

Category B (5kW Power Rating): 5KP150A, 5KP150A-E3/54 - Lower power rating (5kW) with matching voltage parameters. Suitable for applications with reduced transient energy requirements.

Category C (5kW Power Rating, Different Package): BZW50-150 - Lower power rating (5kW) with higher clamping voltage (343V) and different package configuration (R-6 vs. P600).

Parameter Comparison

Engineering Selection Recommendations

15KPA150A (Preferred Direct Substitute): This part maintains identical electrical specifications (150V standoff, 241.9V clamping, 15kW power rating) and is ROHS3 compliant with active product status. The primary difference is packaging format (P600 vs. R-6). Selection is appropriate when PCB layout accommodates P600 package geometry.

5KP150A and 5KP150A-E3/54 (Lower Power Alternatives): Both parts maintain voltage specifications matching the main part (150V standoff, 243V clamping) but operate at reduced power rating (5kW vs. 15kW). These are suitable for applications where transient energy levels do not exceed 5kW. Both are ROHS3 compliant with active product status. 5KP150A-E3/54 is manufactured by Vishay with TransZorb® series designation.

BZW50-150 (Alternative with Modified Specifications): This STMicroelectronics part maintains the 150V standoff voltage but features elevated clamping voltage (343V) and reduced power rating (5kW). The R-6 package matches the main part geometry. Selection requires confirmation that the higher clamping voltage is acceptable for the target application. Operating temperature range is not specified in available data.

All substitute parts are ROHS3 compliant and carry active product status, supporting long-term availability and supply chain continuity.

Frequently Asked Questions (FAQ)

Q: Can 15KPA150A directly replace 15KP150A-TP?

A: Electrical substitution is valid based on matching voltage parameters (150V standoff, 241.9V clamping) and identical 15kW power rating. The primary consideration is package compatibility: 15KPA150A uses P600 package while 15KP150A-TP uses R-6 package. PCB footprint and lead spacing must be verified before substitution.

Q: What is the difference between 15kW and 5kW rated parts?

A: Power rating indicates the maximum peak pulse power the device can dissipate during a transient event. 15kW-rated parts (15KP150A-TP, 15KPA150A) handle higher energy transients. 5kW-rated parts (5KP150A, 5KP150A-E3/54, BZW50-150) are suitable for lower-energy transient protection. Selection depends on the actual transient energy present in the application circuit.

Q: Why does BZW50-150 have a higher clamping voltage (343V)?

A: Clamping voltage is a characteristic of the specific diode design and manufacturing process. BZW50-150 exhibits 343V clamping compared to 243V for other listed parts. This higher clamping voltage may affect circuit protection thresholds and should be evaluated against application requirements before substitution.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts (15KPA150A, 5KP150A, 5KP150A-E3/54, BZW50-150) are ROHS3 compliant, matching the compliance status of the main part 15KP150A-TP.

Q: What package types are available?

A: The main part 15KP150A-TP and BZW50-150 use R-6 axial package. The 15KPA150A, 5KP150A, and 5KP150A-E3/54 use P600 axial package. Both are through-hole mounting types with different lead spacing and footprint geometry.

Q: Can I use a 5kW part in place of a 15kW part?

A: Substitution is valid only if the application's actual transient energy does not exceed 5kW. If transient events regularly approach or exceed 5kW, the 5kW-rated device may experience thermal stress or failure. Application circuit analysis is required to confirm transient energy levels.