30KPA64C-B Equivalent & Substitute Parts

Part Overview

The 30KPA64C-B is a transient voltage suppressor (TVS) diode manufactured by Littelfuse Inc., designed for general-purpose overvoltage protection applications. This bidirectional Zener diode operates with a 64V reverse standoff voltage and provides peak pulse power dissipation of 30kW. The part is currently obsolete, making equivalent and substitute parts necessary for ongoing system support and new designs requiring similar electrical performance characteristics.

Substiute Parts

30KPA64C-B

Littelfuse Inc.In Stock: 93030KPA64C-B Datasheet

Current PartRFQ

30KPA64CA

MDE Semiconductor IncIn Stock: 207530KPA64CA Datasheet

DirectRFQ

30KPA64CA-B

Littelfuse Inc.In Stock: 70430KPA64CA-B Datasheet

DirectRFQ

15KP64CA-TP

Micro Commercial CoIn Stock: 100015KP64CA-TP Datasheet

MFR RecommendedRFQ

15KPA64CAE3/TR13

Microchip TechnologyIn Stock: 117315KPA64CAE3/TR13 Datasheet

MFR RecommendedRFQ

30KP64CA-TP

Micro Commercial CoIn Stock: 122530KP64CA-TP Datasheet

MFR RecommendedRFQ

5KP64CA-TP

Micro Commercial CoIn Stock: 6765KP64CA-TP Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 30KPA64C-B is determined by the following critical parameters:

• Voltage - Reverse Standoff (Typ): 64V (exact match required)
• Voltage - Clamping (Max) @ Ipp: 103V–109.2V (acceptable range)
• Current - Peak Pulse (10/1000µs): 144.9A–291.3A (acceptable range)
• Power - Peak Pulse: 5000W–30000W (acceptable range)
• Operating Temperature: -55°C ~ 175°C (TJ) (exact match required)
• Mounting Type: Through Hole (exact match required)
• Package / Case: P600 or R-6, Axial (compatible packages)
• RoHS Status: ROHS3 Compliant (required)

Substitute parts must maintain the 64V reverse standoff voltage and through-hole axial mounting configuration. Clamping voltage, peak pulse current, and power dissipation may vary within the specified ranges depending on application requirements. All substitutes listed are ROHS3 compliant and operate within the -55°C to 175°C temperature range.

Parameter Comparison

Engineering Selection Recommendations

Direct Equivalents (Preferred for 30kW Applications)

30KPA64CA and 30KPA64CA-B are the primary substitutes for the 30KPA64C-B. Both maintain the 30kW peak pulse power rating, 64V reverse standoff voltage, and P600 axial package. 30KPA64CA-B is manufactured by Littelfuse Inc., the original manufacturer, and is currently in active production with 614 units in stock. 30KPA64CA is manufactured by MDE Semiconductor Inc. and is also active with 2016 units available. Both parts are ROHS3 compliant and operate across the full -55°C to 175°C temperature range.

Alternative Substitutes (Reduced Power Rating)

15KP64CA-TP, 15KPA64CAE3/TR13, and 30KP64CA-TP are suitable for applications where peak pulse power requirements are 15kW or lower. 15KP64CA-TP and 30KP64CA-TP use the R-6 axial package instead of P600, which may require board layout modifications. 15KPA64CAE3/TR13 maintains the P600 package and is manufactured by Microchip Technology with 1066 units in stock.

5KP64CA-TP is suitable only for applications requiring 5kW or less peak pulse power dissipation and uses the R-6 axial package.

All substitute parts are ROHS3 compliant and maintain the 64V reverse standoff voltage and -55°C to 175°C operating temperature range required for compatibility with the original 30KPA64C-B design.

Frequently Asked Questions (FAQ)

Q: Can 30KPA64CA or 30KPA64CA-B be used as direct replacements for 30KPA64C-B?

A: Yes. Both parts maintain the critical electrical parameters: 64V reverse standoff voltage, 30kW peak pulse power, 291.3A peak pulse current, P600 axial package, and -55°C to 175°C operating temperature. The primary difference is product status; 30KPA64C-B is obsolete while both alternatives are in active production.

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

A: Both are through-hole axial packages for TVS diodes. P600 and R-6 differ in physical dimensions and lead spacing. Parts using R-6 packages (15KP64CA-TP, 30KP64CA-TP, 5KP64CA-TP) may require board layout modifications if the original design was specified for P600 package spacing.

Q: Can I use 15KPA64CAE3/TR13 or 15KP64CA-TP in place of 30KPA64C-B?

A: These parts are suitable only if your application requires 15kW or less peak pulse power. They maintain the 64V reverse standoff voltage and -55°C to 175°C operating temperature. If your circuit requires the full 30kW capability of the original part, these lower-power alternatives are not appropriate.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts are ROHS3 compliant, matching the compliance status of the original 30KPA64C-B.

Q: What is the significance of the clamping voltage difference between 30KPA64C-B (109.2V) and its substitutes (103V–104V)?

A: The clamping voltage is the maximum voltage across the TVS diode when conducting peak pulse current. The 30KPA64C-B clamps at 109.2V, while most substitutes clamp at 103V–104V. Lower clamping voltage provides better overvoltage protection. Selection depends on the specific voltage protection threshold required by your circuit design.

Q: Which substitute offers the best inventory availability?

A: 30KPA64CA (MDE Semiconductor Inc.) has the highest inventory with 2016 units in stock. 30KPA64CA-B (Littelfuse Inc.) has 614 units available. Both are suitable direct replacements for the obsolete 30KPA64C-B.