15KP58C Equivalent & Substitute Parts

Part Overview

The 15KP58C is a transient voltage suppressor (TVS) diode manufactured by Littelfuse Inc., designed for general-purpose voltage clamping applications. This component features a 58V reverse standoff voltage with a maximum clamping voltage of 98.7V at peak pulse current, housed in a through-hole P600 axial package. The product is currently obsolete, making identification of functionally equivalent alternatives essential for ongoing system maintenance and new design implementations where this component specification remains applicable.

Substiute Parts

15KP58C

Littelfuse Inc.In Stock: 80115KP58C Datasheet

Current PartRFQ

AK15-058C-BP

Micro Commercial CoIn Stock: 1133AK15-058C-BP Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 15KP58C is determined by the following critical electrical and mechanical parameters:

Electrical Compatibility Criteria:

• Voltage - Reverse Standoff (Typ): 58V
• Voltage - Breakdown (Min): minimum 60.86V
• Voltage - Clamping (Max) @ Ipp: must not exceed 98.7V for direct substitution
• Power - Peak Pulse: 15000W (15kW) minimum
• Type: Zener diode, single bidirectional channel

Mechanical Compatibility Criteria:

• Mounting Type: Through Hole
• Package / Case: Axial configuration
• Operating Temperature Range: must support -55°C ~ 175°C or equivalent

The substitute part AK15-058C-BP meets the core electrical requirements (58V standoff voltage, 64V minimum breakdown, 110V clamping voltage) and maintains through-hole axial mounting compatibility. The higher clamping voltage (110V vs. 98.7V) represents a trade-off acceptable in general-purpose applications where the primary function is transient suppression rather than precise voltage regulation.

Parameter Comparison

Engineering Selection Recommendations

The AK15-058C-BP from Micro Commercial Co qualifies as a functional substitute for the obsolete 15KP58C based on the following engineering criteria:

Electrical Equivalence: Both components maintain the 58V reverse standoff voltage specification. The AK15-058C-BP's 64V minimum breakdown voltage exceeds the 15KP58C's 60.86V requirement, ensuring adequate margin. The higher clamping voltage (110V vs. 98.7V) is acceptable in general-purpose transient suppression applications where the primary objective is protection against voltage spikes rather than precision voltage regulation.

Mechanical Compatibility: Both components utilize through-hole axial mounting, enabling direct PCB footprint compatibility with appropriate lead bending adjustments. The AK15-058C-BP specifies a right-angle bend configuration with 24.15mm center spacing, which may require mechanical verification against the original P600 package specifications.

Compliance and Availability: The AK15-058C-BP is currently in active production status with 1058 units available in inventory, addressing the obsolescence of the 15KP58C. Both components maintain equivalent environmental compliance (ROHS3 Compliant vs. REACH Unaffected).

Temperature Consideration: The AK15-058C-BP operates to 150°C maximum junction temperature, compared to the 15KP58C's 175°C upper limit. Applications requiring sustained operation above 150°C require thermal analysis to confirm suitability.

Frequently Asked Questions (FAQ)

Q: Can the AK15-058C-BP directly replace the 15KP58C without circuit modifications?

A: The AK15-058C-BP provides electrical substitution based on matching the 58V standoff voltage and maintaining adequate clamping voltage performance. Physical installation requires verification of the axial lead spacing and bend configuration against the original P600 package layout. No circuit modifications are required for general-purpose transient suppression applications.

Q: What is the significance of the higher clamping voltage (110V vs. 98.7V) in the substitute part?

A: The clamping voltage represents the maximum voltage across the diode during peak pulse current. The AK15-058C-BP's 110V clamping voltage is higher than the 15KP58C's 98.7V specification. In general-purpose applications, this represents acceptable performance variation. Applications requiring precise voltage clamping below 100V should evaluate circuit impact through simulation or testing.

Q: Are there any temperature-related limitations when substituting the AK15-058C-BP?

A: The AK15-058C-BP specifies a maximum junction temperature of 150°C, compared to the 15KP58C's 175°C rating. Applications operating continuously near the upper temperature limit should verify thermal performance. The -55°C lower limit is equivalent for both components.

Q: What are the key electrical parameters that determine substitution compatibility?

A: Substitution compatibility is determined by: (1) Reverse standoff voltage matching at 58V, (2) Breakdown voltage meeting or exceeding 60.86V minimum, (3) Clamping voltage performance suitable for the application, (4) Peak pulse power or current rating adequate for transient suppression duty, and (5) Single-channel bidirectional configuration.

Q: How do the package specifications differ between these components?

A: The 15KP58C uses a P600 axial package, while the AK15-058C-BP specifies an axial package with right-angle bend configuration at 24.15mm center spacing. Both are through-hole components suitable for PCB mounting. Physical lead spacing and bend geometry should be verified against the original PCB layout before installation.

Q: What compliance certifications apply to the substitute part?

A: The AK15-058C-BP maintains REACH Unaffected status and is manufactured to current industry standards. The original 15KP58C was ROHS3 Compliant. Both components carry equivalent environmental compliance suitable for industrial and commercial applications.