30KPA28C-B Equivalent & Substitute Parts

Part Overview

The 30KPA28C-B is a bidirectional Transient Voltage Suppressor (TVS) diode manufactured by Littelfuse Inc., designed for general-purpose transient protection applications. This component features a 28V reverse standoff voltage with a 52.5V maximum clamping voltage and 606A peak pulse current capability in a through-hole P600 axial package. The part is classified as obsolete, necessitating identification of active equivalent alternatives that maintain electrical and mechanical compatibility for continued system support and new designs.

Substiute Parts

30KPA28C-B

Littelfuse Inc.In Stock: 116630KPA28C-B Datasheet

Current PartRFQ

30KPA28CA

MDE Semiconductor IncIn Stock: 176530KPA28CA Datasheet

DirectRFQ

30KPA28CA-B

Littelfuse Inc.In Stock: 114630KPA28CA-B Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 30KPA28C-B is determined by strict equivalence across the following critical parameters:

• Reverse standoff voltage: 28V (Typ)
• Peak pulse current capability: 606A
• Peak pulse power dissipation: 30kW
• Bidirectional channel configuration: 1 channel
• Package type: P600 axial through-hole
• Operating temperature range: -55°C to 175°C
• RoHS3 compliance status

The identified substitute parts maintain identical reverse standoff voltage, peak pulse current, power dissipation, and package configuration. Variations in maximum clamping voltage (50V versus 52.5V) remain within the functional tolerance of the 30KPA series design envelope and do not preclude substitution for general-purpose transient protection applications.

Parameter Comparison

Engineering Selection Recommendations

Both 30KPA28CA and 30KPA28CA-B are active product alternatives to the obsolete 30KPA28C-B. Selection between these substitutes is based on product availability, supply chain continuity, and compliance documentation requirements.

The 30KPA28CA-B, manufactured by Littelfuse Inc., maintains the original manufacturer relationship and carries identical RoHS3 compliance status with REACH Unaffected designation. This option provides continuity with the original design source.

The 30KPA28CA, manufactured by MDE Semiconductor Inc., offers an alternative supply source within the same 30KPA series with ROHS3 compliance and REACH information available upon request. This option provides supply diversification.

Both parts satisfy the electrical and mechanical requirements of the 30KPA28C-B application envelope.

Frequently Asked Questions (FAQ)

Q: Can 30KPA28CA and 30KPA28CA-B be used interchangeably with 30KPA28C-B?

A: Both substitute parts maintain the critical electrical parameters: 28V reverse standoff voltage, 606A peak pulse current, 30kW peak pulse power, and P600 axial through-hole package configuration. The maximum clamping voltage difference (50V versus 52.5V) does not prevent functional substitution in general-purpose transient protection circuits.

Q: What is the significance of the product status change from Obsolete to Active?

A: The obsolete status of 30KPA28C-B indicates discontinued manufacturing and limited future availability. The active status of both substitute parts ensures continued supply, manufacturing support, and compliance documentation for new designs and system maintenance.

Q: Are there differences in RoHS and REACH compliance between the substitutes?

A: Both substitutes maintain ROHS3 compliance. The 30KPA28CA-B carries REACH Unaffected designation, while 30KPA28CA has REACH information available upon request. Both meet regulatory requirements for their respective markets.

Q: Does the difference in breakdown voltage (Min) affect substitution suitability?

A: The breakdown voltage minimum specifications (29.56V for 30KPA28C-B, 31.3V and 31.28V for substitutes) represent design tolerances within the 30KPA series. All values remain within the functional operating window for 28V standoff voltage applications.

Q: Are the packaging and mounting characteristics identical?

A: All three parts use P600 axial through-hole packages with identical mechanical dimensions and mounting requirements, enabling direct board-level substitution without design modification.