30KP120CA-TP Transient Voltage Suppressor Equivalent & Substitute Parts

Part Overview

The 30KP120CA-TP is a bidirectional Zener transient voltage suppressor (TVS) diode manufactured by Micro Commercial Co, designed for general-purpose overvoltage protection applications. This through-hole component operates across a junction temperature range of -55°C to 175°C and is rated for 30kW peak pulse power dissipation. The part is currently in active production status and carries ROHS3 compliance certification with unlimited moisture sensitivity level (MSL 1).

Equivalent and substitute parts are identified based on matching electrical characteristics including reverse standoff voltage, breakdown voltage, clamping voltage, and through-hole axial package compatibility. Alternative sources provide functionally equivalent protection performance for circuit designs requiring 120V reverse standoff rating.

Substiute Parts

30KP120CA-TP

Micro Commercial CoIn Stock: 73730KP120CA-TP Datasheet

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15KPA120CA

MDE Semiconductor IncIn Stock: 170615KPA120CA Datasheet

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30KPA120CA

MDE Semiconductor IncIn Stock: 162730KPA120CA Datasheet

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BZW50-120B

STMicroelectronicsIn Stock: 1000212BZW50-120B Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 30KP120CA-TP are qualified based on the following critical electrical and mechanical parameters:

Primary Matching Criteria:

• Reverse Standoff Voltage: 120V (Typ)
• Breakdown Voltage (Min): 134V
• Bidirectional Channels: 1
• Mounting Type: Through Hole
• Package Type: Axial configuration
• Type: Zener TVS Diode
• RoHS3 Compliance

Secondary Compatibility Factors:

• Clamping Voltage @ Ipp: 194.4V (primary part specification)
• Operating Temperature Range: -55°C ~ 175°C
• Applications: General Purpose overvoltage protection

The substitute parts listed below maintain electrical equivalence within the specified voltage ratings and thermal operating range. Packaging variations (R-6 vs. P600) and power dissipation differences are noted for circuit design consideration.

Parameter Comparison

Engineering Selection Recommendations

30KPA120CA (MDE Semiconductor Inc)

This substitute provides direct electrical equivalence to the 30KP120CA-TP. Both components share identical reverse standoff voltage (120V), breakdown voltage (134V minimum), and clamping voltage (194.4V). Peak pulse power rating matches at 30kW. Operating temperature range and thermal junction specifications are identical (-55°C to 175°C). The primary difference is packaging: the 30KPA120CA uses P600 axial package versus the R-6 axial package of the main part. Both are through-hole configurations suitable for PCB mounting. ROHS3 compliance and MSL 1 certification are maintained. This substitute is recommended for applications where package footprint differences are acceptable.

15KPA120CA (MDE Semiconductor Inc)

This substitute maintains voltage equivalence (120V reverse standoff, 134V breakdown minimum, 192.3V clamping) but operates at reduced power dissipation (15kW versus 30kW). Peak pulse current is specified at 78.5A. Operating temperature range matches the main part (-55°C to 175°C). The P600 axial package differs from the R-6 package of the primary component. This substitute is suitable for applications with lower power transient requirements or where space constraints favor the P600 package form factor. ROHS3 compliance and MSL 1 certification apply.

BZW50-120B (STMicroelectronics)

This substitute maintains the 120V reverse standoff voltage specification but exhibits higher clamping voltage (274V versus 194.4V) and lower peak pulse power rating (5kW versus 30kW). Peak pulse current is specified at 219A under 8/20µs pulse conditions. The R-6 axial package matches the main part's physical form factor. Operating temperature data is not provided in the specification. ROHS3 compliance and MSL 1 certification are confirmed. This substitute is applicable only to applications where the higher clamping voltage and reduced power dissipation are compatible with circuit protection requirements.

Frequently Asked Questions (FAQ)

Q: Can the 15KPA120CA be used as a direct replacement for the 30KP120CA-TP?

A: The 15KPA120CA provides electrical equivalence for voltage protection (120V reverse standoff, 134V breakdown, 192.3V clamping) but is rated for 15kW peak pulse power versus 30kW for the main part. Substitution is valid only if the application's transient energy does not exceed 15kW. Package differences (P600 versus R-6) must also be accommodated in the PCB layout.

Q: What is the significance of the clamping voltage difference between the main part and BZW50-120B?

A: The BZW50-120B exhibits 274V clamping voltage compared to 194.4V for the 30KP120CA-TP. This higher clamping voltage means the component allows greater voltage overshoot before suppression occurs. The BZW50-120B is suitable only for applications where this higher clamping threshold is acceptable and does not exceed downstream component voltage ratings.

Q: Are package differences between R-6 and P600 critical for substitution?

A: Package differences affect PCB footprint, lead spacing, and mounting hole requirements. R-6 and P600 are both axial through-hole packages but have different physical dimensions. Substitution requires verification that the alternative package fits the existing PCB layout or that layout modification is feasible.

Q: Do all substitute parts maintain the same operating temperature range?

A: The 30KPA120CA and 15KPA120CA both specify -55°C to 175°C junction temperature range, matching the main part. The BZW50-120B does not provide operating temperature data in the available specification. Thermal performance must be confirmed for applications requiring full temperature range operation.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. The 30KPA120CA, 15KPA120CA, and BZW50-120B all carry ROHS3 Compliant certification. All parts maintain MSL 1 (Unlimited) moisture sensitivity level, indicating no special moisture handling requirements during storage or assembly.

Q: Which substitute offers the closest electrical match to the 30KP120CA-TP?

A: The 30KPA120CA provides the closest electrical equivalence, matching reverse standoff voltage (120V), breakdown voltage (134V), clamping voltage (194.4V), and peak pulse power (30kW). The primary difference is the P600 package versus R-6 package. This substitute is recommended when package accommodation is possible.