5KP70A-G Equivalent & Substitute Parts

Part Overview

The 5KP70A-G is a unidirectional transient voltage suppressor (TVS) diode manufactured by Comchip Technology, designed for general-purpose overvoltage protection applications. This component features a 70V reverse standoff voltage with a 113V maximum clamping voltage and 44.25A peak pulse current capability at 5000W peak pulse power. The device is specified for through-hole mounting in the R-6 axial package and maintains active product status with full ROHS3 compliance.

Equivalent and substitute parts are identified based on matching electrical performance parameters: reverse standoff voltage, clamping voltage range, peak pulse current capability, and power dissipation rating. Substitute selection ensures functional interchangeability while accounting for package form factor and thermal operating range variations.

Substiute Parts

5KP70A-G

Comchip TechnologyIn Stock: 10365KP70A-G Datasheet

Current PartRFQ

15KPA70A

MDE Semiconductor IncIn Stock: 181315KPA70A Datasheet

MFR RecommendedRFQ

30KPA70A

MDE Semiconductor IncIn Stock: 201630KPA70A Datasheet

MFR RecommendedRFQ

5KP70A

Littelfuse Inc.In Stock: 48135KP70A Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 5KP70A-G are qualified based on the following electrical and mechanical criteria:

Primary Matching Parameters:

• Voltage - Reverse Standoff: 70V (nominal)
• Voltage - Breakdown (Min): 77.8V to 78.2V range
• Voltage - Clamping (Max) @ Ipp: 109V to 113.6V range
• Unidirectional topology with single channel configuration
• Through-hole axial mounting
• Zener diode type
• General-purpose application classification
• ROHS3 compliance and EAR99 export classification

Identified Substitute Parts:

1. 15KPA70A (MDE Semiconductor Inc.) — Higher power rating (15kW) with extended temperature range (-55°C to 175°C)
2. 30KPA70A (MDE Semiconductor Inc.) — Highest power rating (30kW) with extended temperature range (-55°C to 175°C)
3. 5KP70A (Littelfuse Inc.) — Equivalent power rating (5kW) with extended temperature range (-55°C to 175°C)

All substitute parts maintain the 70V reverse standoff voltage specification and operate within the defined clamping voltage window, ensuring functional compatibility for overvoltage protection circuits.

Parameter Comparison

Engineering Selection Recommendations

5KP70A (Littelfuse Inc.) is the closest functional equivalent to the 5KP70A-G, offering identical power dissipation (5kW) and clamping voltage performance with marginally higher peak pulse current (45.1A vs. 44.25A). This substitute provides extended operating temperature range (-55°C to 175°C) and maintains ROHS3 compliance. The primary consideration is package form factor transition from R-6 to P600 axial configuration, which requires PCB layout verification for mechanical fit.

15KPA70A (MDE Semiconductor Inc.) provides a 3× power rating increase (15kW) while maintaining voltage specifications within acceptable tolerance. This substitute is suitable for applications requiring enhanced transient energy absorption or where thermal margin is critical. Extended temperature range (-55°C to 175°C) and ROHS3 compliance are maintained.

30KPA70A (MDE Semiconductor Inc.) offers maximum power dissipation capability (30kW) with the lowest clamping voltage (109V) within the acceptable range. This substitute is appropriate for high-energy transient environments or where component redundancy is implemented. Extended temperature range and ROHS3 compliance are provided.

All substitute parts maintain active product status and full regulatory compliance (ROHS3, EAR99 classification). Selection should prioritize thermal requirements, available PCB space for package form factor, and circuit energy absorption specifications.

Frequently Asked Questions (FAQ)

Q: Can 15KPA70A or 30KPA70A be used as direct replacements for 5KP70A-G?

A: Yes, both parts are electrically compatible substitutes. The 15KPA70A and 30KPA70A maintain the 70V reverse standoff voltage and operate within the specified clamping voltage window (109V to 113.6V). The primary consideration is package form factor: both MDE parts use P600 axial packaging versus the original R-6 package. PCB layout must accommodate the different package dimensions.

Q: What is the significance of the power rating difference between 5KP70A-G (5kW) and 15KPA70A/30KPA70A (15kW/30kW)?

A: Power rating indicates the maximum transient energy the device can dissipate during a 10/1000µs pulse. Higher power ratings provide greater margin for transient suppression in high-energy environments. Selection depends on circuit transient energy requirements. The 5KP70A (Littelfuse) maintains the original 5kW rating and is suitable for equivalent energy applications.

Q: Are there package compatibility issues when substituting from R-6 to P600 axial packages?

A: Yes. R-6 and P600 are different axial package form factors with distinct physical dimensions. PCB footprint, lead spacing, and component height differ between packages. Mechanical verification is required before substitution to ensure proper fit within the available PCB space and clearance from adjacent components.

Q: Do all substitute parts meet the same compliance standards as 5KP70A-G?

A: All identified substitutes are ROHS3 compliant and classified as EAR99 for export purposes. The 5KP70A (Littelfuse) is REACH Affected; 15KPA70A and 30KPA70A list REACH status as available upon request. Verify specific REACH compliance requirements for your application region before final selection.

Q: What is the impact of extended operating temperature range (-55°C to 175°C) in substitute parts versus the original (-55°C to 150°C)?

A: Extended temperature range provides additional thermal margin and is suitable for applications with elevated ambient or junction temperatures. This is a performance enhancement with no negative impact on compatibility. Selection should be based on actual circuit thermal requirements.

Q: Can the 5KP70A (Littelfuse) be considered a preferred substitute?

A: The 5KP70A (Littelfuse) is the closest functional equivalent, offering identical power rating (5kW) and clamping voltage (113V) with marginally higher peak pulse current (45.1A). Extended temperature range and ROHS3 compliance are maintained. The primary requirement is PCB layout verification for the R-6 to P600 package transition.