30KP45CA-TP Transient Voltage Suppressor Equivalent & Substitute Parts

Part Overview

The 30KP45CA-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 axial component operates across a temperature range of -55°C to 175°C and is ROHS3 compliant with unlimited moisture sensitivity rating. The part is currently active in production with 861 units in stock.

Equivalent and substitute parts are identified based on matching core electrical parameters: 45V reverse standoff voltage, 50.3V minimum breakdown voltage, 77.4V maximum clamping voltage, and 30kW peak pulse power rating. These parameters define the protection envelope for the application circuit.

Substiute Parts

30KP45CA-TP

Micro Commercial CoIn Stock: 94130KP45CA-TP Datasheet

Current PartRFQ

30KPA45CA

MDE Semiconductor IncIn Stock: 150230KPA45CA Datasheet

DirectRFQ

15KPA45CA

MDE Semiconductor IncIn Stock: 188715KPA45CA Datasheet

SimilarRFQ

5KP45CA

Littelfuse Inc.In Stock: 32335KP45CA Datasheet

SimilarRFQ

5KP48CA

Diotec SemiconductorIn Stock: 44145KP48CA Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 30KP45CA-TP are classified based on electrical parameter compatibility within the following criteria:

Primary Substitution Criteria:

• Reverse standoff voltage: 45V (±3V tolerance acceptable for 48V variants)
• Minimum breakdown voltage: 50.3V or higher
• Maximum clamping voltage: 72.8V to 77.4V range
• Peak pulse power: 5kW to 30kW
• Bidirectional channels: 1
• Mounting type: Through hole, axial package
• Operating temperature range: -50°C to 175°C minimum

Direct Equivalent (30KPA45CA): Identical electrical specifications with matching 77.4V clamping voltage and 30kW power rating. Differs only in packaging format (Bulk vs. Tape & Reel) and manufacturer (MDE Semiconductor Inc).

Similar Substitutes (15KPA45CA, 5KP45CA, 5KP48CA): Maintain the 45V standoff voltage and general-purpose application profile but operate at reduced peak pulse power levels (15kW or 5kW). These parts provide equivalent voltage protection with lower current handling capacity. The 5KP48CA operates at 48V standoff voltage, representing a minor voltage class variation.

Parameter Comparison

Engineering Selection Recommendations

30KPA45CA (Direct Equivalent): Select this part when manufacturer substitution is acceptable and packaging format (Bulk) meets procurement requirements. Electrical performance is identical to the 30KP45CA-TP. Both manufacturers maintain ROHS3 compliance and active production status.

15KPA45CA (Reduced Power Rating): Select when circuit transient energy is limited to 15kW peak pulse. Maintains identical voltage protection parameters (45V standoff, 72.8V clamping) with lower current handling. Suitable for applications with reduced surge severity. MDE Semiconductor Inc manufacturing and ROHS3 compliance confirmed.

5KP45CA (Reduced Power Rating): Select when circuit transient energy is limited to 5kW peak pulse. Maintains 45V standoff voltage with 72.7V clamping voltage. Littelfuse Inc manufacturing with ROHS3 compliance and unlimited moisture sensitivity rating. Cut Tape packaging available.

5KP48CA (Voltage Class Variant): Select when 48V standoff voltage is acceptable for the application. Provides 77.4V clamping voltage matching the original part but at 5kW power rating. Diotec Semiconductor manufacturing with ROHS3 compliance. Operating temperature minimum is -50°C (versus -55°C for other options).

All substitute parts maintain through-hole axial mounting compatibility and general-purpose application classification. Product status is active for all options, ensuring continued availability.

Frequently Asked Questions (FAQ)

Q: Can 30KPA45CA directly replace 30KP45CA-TP without circuit modification?

A: Yes. Both parts share identical electrical specifications: 45V reverse standoff voltage, 50.3V breakdown voltage, 77.4V clamping voltage, and 30kW peak pulse power. The primary difference is packaging format (Bulk versus Tape & Reel) and manufacturer. Physical mounting remains compatible as both use through-hole axial configuration.

Q: What is the difference between R-6 and P600 package designations?

A: R-6 and P600 are both axial through-hole packages for TVS diodes. The 30KP45CA-TP uses R-6 packaging, while substitute parts use P600 packaging. Both are mechanically compatible with standard through-hole PCB layouts, though physical dimensions may vary slightly. Verify PCB footprint compatibility before selection.

Q: Can lower power-rated parts (5KP or 15KPA series) replace the 30kW-rated 30KP45CA-TP?

A: Lower power-rated substitutes are suitable only when circuit transient energy does not exceed their respective power ratings. The 15KPA45CA handles up to 15kW, and 5KP series parts handle up to 5kW. If the application generates transient pulses exceeding these thresholds, the lower-rated parts will not provide adequate protection. Verify actual circuit transient energy before substitution.

Q: Is the 5KP48CA suitable for 45V standoff applications?

A: The 5KP48CA operates at 48V standoff voltage, representing a 3V increase from the 45V specification. This part is suitable only when the application circuit can tolerate the higher standoff voltage. The clamping voltage (77.4V) matches the original part, but the elevated standoff voltage may affect circuit behavior in sensitive applications. Confirm application tolerance before selection.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts carry ROHS3 compliance certification. The 30KP45CA-TP, 30KPA45CA, 15KPA45CA, 5KP45CA, and 5KP48CA are all ROHS3 compliant, meeting environmental and hazardous substance restrictions for electronic components.

Q: What is the moisture sensitivity rating for these TVS diodes?

A: The 30KP45CA-TP, 30KPA45CA, 15KPA45CA, and 5KP45CA all carry MSL 1 (Unlimited) moisture sensitivity rating, indicating no moisture-related storage restrictions. The 5KP48CA carries MSL Not Applicable designation. All parts are suitable for standard storage and handling conditions.