HFA08TA60CS Equivalent & Substitute Parts

Part Overview

The HFA08TA60CS is a general-purpose diode array manufactured by Vishay General Semiconductor - Diodes Division, configured as a 1 Pair Common Cathode with 600V reverse voltage rating and 4A average rectified current per diode. The device is packaged in a Surface Mount TO-263-3 D2PAK format with fast recovery characteristics (≤500ns). This part is classified as obsolete, making identification of equivalent and substitute components necessary for ongoing design support and procurement continuity.

Substiute Parts

HFA08TA60CS

Vishay General Semiconductor - Diodes DivisionIn Stock: 10119HFA08TA60CS Datasheet

Current PartRFQ

STTH16L06CG-TR

STMicroelectronicsIn Stock: 20418STTH16L06CG-TR Datasheet

MFR RecommendedRFQ

STTH30L06CG-TR

STMicroelectronicsIn Stock: 1992STTH30L06CG-TR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the HFA08TA60CS are selected based on strict electrical and mechanical compatibility criteria. The primary substitution parameters are:

Mandatory Compatibility Parameters:

• Diode Configuration: 1 Pair Common Cathode (identical topology required)
• Voltage - DC Reverse (Vr) (Max): 600 V (minimum requirement)
• Package / Case: TO-263-3, D2PAK (2 Leads + Tab), TO-263AB (identical footprint)
• Mounting Type: Surface Mount (identical assembly method)
• Speed Classification: Fast Recovery ≤ 500ns, > 200mA (Io) (functional requirement)

Allowable Parameter Variations:

• Current - Average Rectified (Io): Substitute parts may exceed the 4A specification, as higher current ratings provide functional equivalence with backward compatibility
• Voltage - Forward (Vf): Minor variations acceptable within the fast recovery diode technology class
• Reverse Recovery Time (trr): Variations acceptable provided fast recovery classification is maintained
• Operating Temperature - Junction: Higher maximum ratings acceptable
• RoHS Status: Active parts with RoHS3 compliance represent design improvement over obsolete non-compliant part

Parameter Comparison

Engineering Selection Recommendations

STTH16L06CG-TR (10A Variant)

This substitute provides a 2.5× increase in average rectified current (10A vs. 4A) while maintaining identical 600V reverse voltage rating and TO-263-3 D2PAK package footprint. The part is manufactured by STMicroelectronics and carries Active product status with ROHS3 compliance. The reverse recovery time increases from 42ns to 55ns, remaining within fast recovery classification. This variant is suitable for applications requiring current headroom above the original 4A specification.

STTH30L06CG-TR (20A Variant)

This substitute provides a 5× increase in average rectified current (20A vs. 4A) with identical 600V reverse voltage rating and package compatibility. The part is manufactured by STMicroelectronics and carries Active product status with ROHS3 compliance. The reverse recovery time increases to 85ns, maintaining fast recovery classification. Forward voltage is reduced to 1.55V @ 15A, indicating improved efficiency at higher current levels. This variant is suitable for high-current applications or designs requiring significant current margin.

Both substitutes eliminate the obsolescence risk associated with the HFA08TA60CS and provide compliance with current RoHS3 regulations. Selection between the two variants depends on circuit current requirements and thermal management capabilities.

Frequently Asked Questions (FAQ)

Q: Can STTH16L06CG-TR or STTH30L06CG-TR be used as direct drop-in replacements for HFA08TA60CS?

A: Yes. Both substitutes share identical diode configuration (1 Pair Common Cathode), reverse voltage rating (600V), and package format (TO-263-3 D2PAK). The physical footprint and pinout are compatible. Higher current ratings do not prevent functional substitution in circuits designed for the original 4A specification.

Q: What is the impact of increased reverse recovery time in the substitute parts?

A: The HFA08TA60CS has a reverse recovery time of 42ns. The STTH16L06CG-TR increases this to 55ns, and the STTH30L06CG-TR to 85ns. All three parts maintain fast recovery classification (≤500ns, >200mA). The increase in trr is acceptable for standard rectification applications and does not compromise fast recovery performance.

Q: Are there differences in forward voltage characteristics?

A: The HFA08TA60CS specifies 1.8V @ 4A. The STTH16L06CG-TR maintains 1.8V @ 8A. The STTH30L06CG-TR specifies 1.55V @ 15A, indicating lower forward voltage drop at higher current levels. This variation is within acceptable limits for fast recovery diode technology and may provide improved efficiency in high-current applications.

Q: What is the significance of RoHS3 compliance in the substitute parts?

A: The HFA08TA60CS is RoHS non-compliant. Both substitute parts (STTH16L06CG-TR and STTH30L06CG-TR) are ROHS3 compliant, meeting current environmental and regulatory requirements for electronic components. This compliance status is relevant for new designs and procurement in regulated markets.

Q: How do the operating temperature ranges compare?

A: The HFA08TA60CS operates from -55°C to 150°C junction temperature. Both substitute parts specify a maximum junction temperature of 175°C, providing 25°C additional thermal margin. This higher rating does not affect substitution compatibility and may provide design flexibility in thermally constrained applications.

Q: Which substitute part should be selected for a new design?

A: Selection depends on circuit current requirements. For applications operating at or below 4A, either substitute provides functional equivalence with improved product status and compliance. The STTH16L06CG-TR (10A) offers moderate current headroom. The STTH30L06CG-TR (20A) provides maximum current margin and lowest forward voltage drop at high currents. Thermal management and PCB layout capabilities should guide the final selection.

Q: Are there any package or mounting differences between the main part and substitutes?

A: No. All three parts use identical Surface Mount TO-263-3 D2PAK packaging with 2 Leads + Tab configuration. PCB footprints, solder pad layouts, and thermal tab dimensions are compatible. No design modifications are required for package-related considerations.