30KP39CA-TP Transient Voltage Suppressor Equivalent & Substitute Parts

Part Overview

The 30KP39CA-TP is a through-hole Transient Voltage Suppressor (TVS) diode manufactured by Micro Commercial Co, designed for general-purpose overvoltage protection applications. This bidirectional zener diode features a 39V reverse standoff voltage with 67.2V maximum clamping voltage and 30kW peak pulse power rating. The device is actively produced and ROHS3 compliant, making it suitable for industrial and commercial electronic protection circuits. Equivalent and substitute parts are identified based on matching critical electrical parameters: reverse standoff voltage, breakdown voltage, clamping voltage, and power dissipation capability, combined with compatible through-hole axial packaging.

Substiute Parts

30KP39CA-TP

Micro Commercial CoIn Stock: 76130KP39CA-TP Datasheet

Current PartRFQ

30KPA39CA

MDE Semiconductor IncIn Stock: 176730KPA39CA Datasheet

DirectRFQ

BZW50-39B

STMicroelectronicsIn Stock: 2360BZW50-39B Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 30KP39CA-TP are qualified based on the following critical parameters that determine functional equivalence:

Primary Matching Criteria:

• Voltage - Reverse Standoff: 39V (allows ±tolerance variation within standard specifications)
• Voltage - Breakdown (Min): 43.3V to 43.6V range
• Voltage - Clamping (Max) @ Ipp: 67.2V to 90V range (higher clamping voltage acceptable for protection margin)
• Power - Peak Pulse: minimum 5000W (lower power rating acceptable if application current demands are met)
• Mounting Type: Through Hole
• Package / Case: R-6 or P600 Axial configurations
• Type: Zener bidirectional TVS diode
• RoHS Status: ROHS3 Compliant

Substitution Logic: The 30KPA39CA (MDE Semiconductor Inc) qualifies as a direct equivalent with identical electrical specifications and through-hole axial mounting, differing only in packaging format (P600 vs R-6) and supplier device package designation. The BZW50-39B (STMicroelectronics) qualifies as a functional substitute with matching reverse standoff and breakdown voltages, though featuring higher clamping voltage (90V vs 67.2V) and lower peak pulse power (5kW vs 30kW), suitable for applications where the higher clamping voltage provides additional protection margin and peak current demands do not exceed 667A.

Parameter Comparison

Engineering Selection Recommendations

30KPA39CA (Direct Equivalent): Select this substitute when source availability of the 30KP39CA-TP is limited. This part maintains identical electrical specifications (39V standoff, 67.2V clamping, 30kW peak pulse power) and through-hole axial mounting. The primary difference is packaging format (P600 vs R-6) and supplier device package designation. Both parts are ROHS3 compliant and actively produced. This substitute provides drop-in compatibility for applications requiring the full 30kW power dissipation capability.

BZW50-39B (Functional Substitute): Select this substitute when the application circuit can tolerate higher clamping voltage (90V vs 67.2V) and lower peak pulse power (5kW vs 30kW). This STMicroelectronics part maintains the critical 39V reverse standoff voltage and through-hole R-6 axial package format. The higher clamping voltage provides additional protection margin in overvoltage events. This substitute is suitable for applications where peak transient currents remain below 667A and the circuit design accommodates the higher clamping threshold. ROHS3 compliance and active production status are confirmed.

Frequently Asked Questions (FAQ)

Q: Can the 30KPA39CA replace the 30KP39CA-TP in all applications?

A: Yes. The 30KPA39CA provides identical electrical performance (39V standoff, 67.2V clamping, 30kW peak pulse power) and through-hole axial mounting. The only difference is the supplier device package designation (P600 vs R-6). Both are ROHS3 compliant and actively produced.

Q: What are the limitations of using BZW50-39B as a substitute?

A: The BZW50-39B features higher clamping voltage (90V vs 67.2V) and lower peak pulse power (5kW vs 30kW). It is suitable only for applications where peak transient currents do not exceed 667A and the circuit design can accommodate the higher clamping voltage threshold. The reverse standoff voltage (39V) remains identical.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. The 30KPA39CA and BZW50-39B are both ROHS3 compliant, matching the compliance status of the 30KP39CA-TP.

Q: Do the substitute parts have the same operating temperature range?

A: The 30KPA39CA maintains the identical operating temperature range (-55°C to 175°C). The BZW50-39B operating temperature range is not specified in available data.

Q: Can package format differences affect circuit board layout?

A: Yes. The 30KP39CA-TP uses R-6 axial package, while the 30KPA39CA uses P600 axial package. Both are through-hole axial configurations, but physical dimensions may differ. Verify package dimensions against PCB footprint requirements before substitution. The BZW50-39B uses R-6 axial package, matching the original part's form factor.

Q: What is the difference between reverse standoff voltage and breakdown voltage?

A: Reverse standoff voltage (39V) is the maximum voltage the TVS diode can withstand without conducting. Breakdown voltage (43.3V to 43.6V) is the minimum voltage at which the diode begins to conduct. The difference between these values defines the operating margin for the device.

Q: Are there inventory considerations for selecting a substitute?

A: Yes. Current inventory levels are: 30KP39CA-TP (730 pcs), 30KPA39CA (1684 pcs), and BZW50-39B (2338 pcs). Availability may influence substitution decisions for high-volume production requirements.