15KP78CA-TP Equivalent & Substitute Parts

Part Overview

The 15KP78CA-TP is a bidirectional transient voltage suppressor (TVS) diode manufactured by Micro Commercial Co, designed for general-purpose overvoltage protection applications. This axial through-hole component operates across a junction 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 935 units in stock.

Substitute parts are identified when equivalent electrical performance can be maintained across the critical voltage and power parameters while accommodating different packaging formats and manufacturer specifications.

Substiute Parts

15KP78CA-TP

Micro Commercial CoIn Stock: 96615KP78CA-TP Datasheet

Current PartRFQ

15KPA78CA

MDE Semiconductor IncIn Stock: 188515KPA78CA Datasheet

SimilarRFQ

30KPA78CA

MDE Semiconductor IncIn Stock: 160730KPA78CA Datasheet

SimilarRFQ

5KP78CA

Littelfuse Inc.In Stock: 33025KP78CA Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 15KP78CA-TP is determined by the following criteria:

Mandatory Matching Parameters:

• Voltage - Reverse Standoff (Typ): 78V
• Voltage - Breakdown (Min): 86.7V or 87.1V (within tolerance)
• Voltage - Clamping (Max) @ Ipp: 126V to 129V (acceptable range)
• Mounting Type: Through Hole
• Type: Zener
• Bidirectional Channels: 1
• Operating Temperature Range: -55°C to 175°C minimum
• RoHS Status: ROHS3 Compliant

Flexible Parameters (Allow Variation):

• Power - Peak Pulse: 5000W to 30000W (higher power ratings acceptable for same voltage class)
• Current - Peak Pulse (10/1000µs): Varies by power rating
• Package / Case: R-6, P600 (both axial through-hole formats)
• Packaging Format: Tape & Reel or Bulk
• Manufacturer: Different qualified manufacturers acceptable

The 15KP78CA-TP has three qualified substitutes that maintain the core voltage protection parameters while offering different power dissipation capabilities and packaging options.

Parameter Comparison

Engineering Selection Recommendations

15KPA78CA (MDE Semiconductor Inc) Equivalent power rating (15000W) with identical voltage clamping characteristics. Suitable for direct replacement where bulk packaging is acceptable. ROHS3 compliant with active product status.

30KPA78CA (MDE Semiconductor Inc) Higher power dissipation capability (30000W) with marginally elevated clamping voltage (129V). Appropriate for applications requiring enhanced transient energy absorption. ROHS3 compliant with active product status.

5KP78CA (Littelfuse Inc.) Reduced power rating (5000W) with identical voltage parameters. Suitable for lower-energy transient environments. Available in Tape & Reel packaging matching the main part format. ROHS3 compliant with active product status.

All substitutes maintain the 78V reverse standoff voltage, -55°C to 175°C operating range, and ROHS3 compliance required for equivalent circuit protection performance.

Frequently Asked Questions (FAQ)

Q: Can 15KPA78CA replace 15KP78CA-TP in all applications? A: Yes, provided the application tolerates bulk packaging instead of Tape & Reel format. Electrical parameters are equivalent: both maintain 78V standoff voltage, 126V clamping, and 15000W peak pulse power.

Q: What is the difference between the R-6 and P600 package formats? A: Both are axial through-hole packages suitable for PCB mounting. R-6 and P600 are different physical envelope designations from different manufacturers. Verify PCB footprint compatibility before substitution.

Q: When should 30KPA78CA be selected over 15KP78CA-TP? A: When the circuit experiences transient pulses exceeding 15000W peak power. The 30KPA78CA dissipates 30000W and maintains voltage clamping within acceptable limits (129V maximum).

Q: Is 5KP78CA suitable for high-energy transient protection? A: No. The 5KP78CA is rated for 5000W peak pulse power, one-third the capacity of the main part. Use only in applications with lower transient energy requirements.

Q: Are all substitutes ROHS3 compliant? A: Yes. All listed substitutes carry ROHS3 compliance certification matching the main part specification.

Q: What is the impact of different manufacturers on reliability? A: All manufacturers listed (Micro Commercial Co, MDE Semiconductor Inc, Littelfuse Inc.) are qualified suppliers. Selection should be based on electrical equivalence, packaging format, and inventory availability rather than manufacturer preference alone.

Q: Can packaging format affect circuit performance? A: No. Tape & Reel and Bulk formats contain identical components; the difference is in supply method. Electrical performance is determined by the die and internal construction, not packaging format.