30KPA84C-B Equivalent & Substitute Parts

Part Overview

The 30KPA84C-B is a Transient Voltage Suppressor (TVS) diode manufactured by Littelfuse, designed for general-purpose voltage protection applications. This component features an 84V reverse standoff voltage with a 146.16V maximum clamping voltage and 217.7A peak pulse current capability in a P600 axial through-hole package. The part is currently classified as obsolete, necessitating identification of active equivalent alternatives that maintain electrical and mechanical compatibility for ongoing system support and new designs.

Substiute Parts

30KPA84C-B

LittelfuseIn Stock: 95530KPA84C-B Datasheet

Current PartRFQ

30KPA84CA

MDE Semiconductor IncIn Stock: 207730KPA84CA Datasheet

DirectRFQ

30KPA84CA-B

Littelfuse Inc.In Stock: 121530KPA84CA-B Datasheet

DirectRFQ

30KP84CA-TP

Micro Commercial CoIn Stock: 99030KP84CA-TP Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 30KPA84C-B is determined by the following critical parameters:

• Reverse Standoff Voltage: Must be 84V (±tolerance as specified by manufacturer)
• Peak Pulse Current: Must be 217.7A minimum
• Peak Pulse Power: Must be 30000W (30kW) minimum
• Operating Temperature Range: Must support -55°C to 175°C (TJ)
• Type: Must be Zener diode
• Bidirectional Channels: Must be 1
• Mounting Type: Must be Through Hole
• Package Compatibility: P600 or R-6 axial packages are mechanically compatible

The identified substitute parts maintain these core electrical specifications while offering active product status and improved availability compared to the obsolete 30KPA84C-B.

Parameter Comparison

Engineering Selection Recommendations

Primary Recommendation: 30KPA84CA-B (Littelfuse Inc.)

The 30KPA84CA-B is the preferred direct substitute. It maintains identical electrical performance specifications, operates across the same temperature range, and is manufactured by the original equipment supplier (Littelfuse). This part carries active product status with ROHS3 compliance and REACH Unaffected certification, ensuring long-term availability and regulatory compliance. The P600 axial package provides direct mechanical compatibility without PCB layout modifications.

Secondary Recommendation: 30KPA84CA (MDE Semiconductor Inc.)

The 30KPA84CA offers equivalent electrical specifications and active product status. This alternative provides increased inventory availability (2057 units in stock) and maintains ROHS3 compliance with MSL 1 rating. The P600 package ensures mechanical compatibility. This option is suitable when supply chain diversification is required.

Alternative Recommendation: 30KP84CA-TP (Micro Commercial Co)

The 30KP84CA-TP meets all electrical requirements and maintains active product status. This part uses an R-6 axial package instead of P600. While R-6 and P600 packages are mechanically compatible for through-hole mounting, PCB footprint verification is required prior to implementation. This option is recommended when P600 package availability is constrained.

Frequently Asked Questions (FAQ)

Q: Can 30KPA84CA-B directly replace 30KPA84C-B without circuit modifications?

A: Yes. The 30KPA84CA-B maintains identical reverse standoff voltage (84V), peak pulse current (217.7A), peak pulse power (30kW), and operating temperature range (-55°C to 175°C). The P600 axial through-hole package is mechanically identical. No circuit or PCB modifications are required.

Q: What is the difference between the clamping voltages listed for these parts?

A: The 30KPA84C-B specifies a maximum clamping voltage of 146.16V, while the substitute parts specify 139.2V. Both values fall within acceptable operating parameters for the 84V standoff voltage class. The lower clamping voltage in substitute parts provides improved transient suppression performance. Circuit validation should confirm this characteristic is acceptable for the application.

Q: Are the R-6 and P600 packages interchangeable?

A: Both R-6 and R-6 packages are axial through-hole configurations with compatible electrical and thermal characteristics. However, physical dimensions differ. PCB footprint compatibility must be verified before selecting 30KP84CA-TP. If the existing PCB is designed for P600 spacing, the R-6 package may require footprint modification.

Q: What is the significance of the different manufacturers?

A: All three substitute parts meet the same electrical specifications and compliance requirements. Littelfuse (30KPA84CA-B) is the original manufacturer. MDE Semiconductor Inc. (30KPA84CA) and Micro Commercial Co (30KP84CA-TP) are authorized suppliers offering equivalent performance. Selection may depend on supply chain preferences, inventory availability, and lead time requirements.

Q: Are all substitute parts ROHS3 compliant?

A: 30KPA84CA-B and 30KPA84CA are explicitly ROHS3 compliant. 30KP84CA-TP RoHS status is not specified in available documentation. Compliance verification with the supplier is recommended if ROHS3 certification is a requirement for your application.