30KPA48C-B Equivalent & Substitute Parts

Part Overview

The 30KPA48C-B is a transient voltage suppressor (TVS) diode manufactured by Littelfuse Inc., designed for general-purpose overvoltage protection applications. This bidirectional Zener diode operates at 48V reverse standoff voltage with an 85.68V maximum clamping voltage and 371.3A peak pulse current capability. 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

30KPA48C-B

Littelfuse Inc.In Stock: 79630KPA48C-B Datasheet

Current PartRFQ

30KPA48CA

MDE Semiconductor IncIn Stock: 218530KPA48CA Datasheet

DirectRFQ

30KPA48CA-B

Littelfuse Inc.In Stock: 119930KPA48CA-B Datasheet

DirectRFQ

15KP48CA-TP

Micro Commercial CoIn Stock: 132315KP48CA-TP Datasheet

MFR RecommendedRFQ

15KPA48CAE3/TR13

Microchip TechnologyIn Stock: 91715KPA48CAE3/TR13 Datasheet

MFR RecommendedRFQ

30KP48CA-TP

Micro Commercial CoIn Stock: 81630KP48CA-TP Datasheet

MFR RecommendedRFQ

30KPA48CAE3/TR13

Microchip TechnologyIn Stock: 84230KPA48CAE3/TR13 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 30KPA48C-B is determined by the following critical parameters:

• Reverse Standoff Voltage: Must be 48V (Typ)
• Clamping Voltage Range: 81.6V to 85.68V (Max @ Ipp)
• Peak Pulse Current: 371.3A minimum
• Peak Pulse Power: 30000W (30kW)
• Package / Case: P600, Axial (primary) or R-6, Axial (secondary)
• Mounting Type: Through Hole
• Operating Temperature: -55°C to 175°C (TJ)
• Type: Zener, Bidirectional (1 channel)
• RoHS Status: ROHS3 Compliant

Substitute parts are grouped into two categories based on electrical performance and packaging:

Category A - Direct Electrical Equivalents (P600 Package, 30kW Power Rating)

• 30KPA48CA (MDE Semiconductor Inc) - Active status, 81.6V clamping
• 30KPA48CA-B (Littelfuse Inc.) - Active status, 81.6V clamping
• 30KPA48CAE3/TR13 (Microchip Technology) - Active status, 81.6V clamping, Tape & Reel packaging

Category B - Reduced Power Alternatives (15kW Power Rating)

• 15KPA48CAE3/TR13 (Microchip Technology) - P600 package, 77.7V clamping, 194.3A peak pulse current
• 15KP48CA-TP (Micro Commercial Co) - R-6 package, 77.7V clamping

Category C - Alternative Package (R-6 Axial)

• 30KP48CA-TP (Micro Commercial Co) - R-6 package, 81.6V clamping, 30kW power rating

Parameter Comparison

Engineering Selection Recommendations

Primary Substitutes (Direct Replacement)

For applications requiring identical electrical performance and P600 axial packaging, select from:

• 30KPA48CA-B (Littelfuse Inc.) - Maintains original manufacturer continuity with active product status and ROHS3 compliance
• 30KPA48CA (MDE Semiconductor Inc) - Active alternative with equivalent specifications and ROHS3 compliance
• 30KPA48CAE3/TR13 (Microchip Technology) - Active status with Tape & Reel packaging option for automated assembly

All three parts maintain 371.3A peak pulse current, 30kW power rating, and P600 package compatibility.

Alternative Package Selection

• 30KP48CA-TP (Micro Commercial Co) - Provides R-6 axial package alternative while maintaining 30kW power rating and 48V standoff voltage. Suitable for applications where R-6 footprint is acceptable.

Reduced Power Applications

• 15KPA48CAE3/TR13 (Microchip Technology) - For applications tolerating 15kW power rating with P600 package, 194.3A peak pulse current, and 77.7V clamping voltage
• 15KP48CA-TP (Micro Commercial Co) - For applications tolerating 15kW power rating with R-6 package and 77.7V clamping voltage

All substitute parts maintain ROHS3 compliance and -55°C to 175°C operating temperature range.

Frequently Asked Questions (FAQ)

Q: Can 30KPA48CA-B directly replace 30KPA48C-B in existing designs?

A: Yes. Both parts share identical reverse standoff voltage (48V), peak pulse power (30kW), peak pulse current (371.3A), P600 axial package, and operating temperature range (-55°C to 175°C). The clamping voltage differs slightly (81.6V vs. 85.68V), which remains within acceptable tolerance for general-purpose overvoltage protection applications.

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

A: Both are through-hole axial packages for TVS diodes. P600 is the primary package for the 30KPA series. R-6 is an alternative axial package used by Micro Commercial Co. Package selection depends on PCB footprint design and assembly equipment compatibility. Electrical performance remains equivalent when specifications match.

Q: Can I use 15KPA48CAE3/TR13 as a substitute for 30KPA48C-B?

A: Only if your application tolerates reduced power handling. The 15KPA48CAE3/TR13 provides 15kW peak pulse power versus 30kW for the original part, and 194.3A peak pulse current versus 371.3A. Reverse standoff voltage (48V), clamping voltage (77.7V), and operating temperature range remain compatible. Verify your circuit's transient energy requirements before substitution.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts carry ROHS3 compliance certification, matching the original 30KPA48C-B specification.

Q: What is the significance of product status (Active vs. Obsolete)?

A: Active products are in current production with guaranteed long-term availability and supply chain support. The original 30KPA48C-B is obsolete, meaning production has ended and inventory is limited. Substituting with active alternatives (30KPA48CA-B, 30KPA48CA, or 30KPA48CAE3/TR13) ensures continued component availability for production and field service applications.

Q: Does packaging format (Bulk vs. Tape & Reel) affect electrical performance?

A: No. Packaging format (Bulk, Cut Tape, or Tape & Reel) affects only handling, storage, and assembly automation compatibility. Electrical specifications remain identical regardless of packaging format.