STTH20LCD06CT Equivalent & Substitute Parts

Part Overview

The STTH20LCD06CT is a diode array rectifier manufactured by STMicroelectronics, configured as a 1 Pair Common Cathode design rated for 600 V DC reverse voltage and 10 A average rectified current per diode. This component is packaged in a Through Hole TO-220-3 configuration and features fast recovery characteristics with a 50 ns reverse recovery time. The part is classified as obsolete, making identification of equivalent and substitute components essential for ongoing design support and procurement continuity.

Substiute Parts

STTH20LCD06CT

STMicroelectronicsIn Stock: 1816STTH20LCD06CT Datasheet

Current PartRFQ

SDUR2060CT

SMC Diode SolutionsIn Stock: 1886SDUR2060CT Datasheet

SimilarRFQ

MURF2060CT

SMC Diode SolutionsIn Stock: 2167MURF2060CT Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the STTH20LCD06CT is determined by strict adherence to the following electrical and mechanical parameters:

Primary Substitution Criteria:

• Diode Configuration: 1 Pair Common Cathode (mandatory match)
• Voltage - DC Reverse (Vr) (Max): 600 V (mandatory match)
• Mounting Type: Through Hole (mandatory match)
• Package / Case: TO-220-3 (mandatory match)
• Speed Classification: Fast Recovery ≤ 500 ns, > 200 mA (Io) (mandatory match)
• Reverse Recovery Time (trr): 50 ns (mandatory match)

Secondary Compatibility Parameters:

• Current - Average Rectified (Io) (per Diode): 10 A or greater
• Voltage - Forward (Vf) (Max) @ If: 2 V or lower at 10 A
• Current - Reverse Leakage @ Vr: acceptable within application requirements
• Operating Temperature - Junction: minimum 175°C or greater

Substitute parts must satisfy all primary criteria and maintain compatibility within secondary parameter ranges to ensure functional equivalence in circuit applications.

Parameter Comparison

Engineering Selection Recommendations

SDUR2060CT (SMC Diode Solutions)

The SDUR2060CT is an active product offering full parametric equivalence to the STTH20LCD06CT across all primary substitution criteria. Both components share identical diode configuration, reverse voltage rating, mounting type, package designation, and recovery characteristics. The SDUR2060CT maintains ROHS3 compliance and unlimited moisture sensitivity rating. The forward voltage specification of 2.2 V at 10 A represents a 0.2 V increase over the original part, which is within acceptable tolerance for most rectifier applications. The maximum junction temperature of 150°C is 25°C lower than the original specification; this parameter must be evaluated against application thermal requirements. The SDUR2060CT is recommended as the primary substitute due to its active product status, ensuring long-term availability and supply chain continuity.

MURF2060CT (SMC Diode Solutions)

The MURF2060CT provides parametric equivalence across all primary substitution criteria and matches the 10 A current rating of the original part. This component features an isolated tab configuration (ITO-220AB package variant) compared to the standard TO-220-3 of the original part. The isolated tab design provides electrical isolation between the tab and the semiconductor junction, which may be beneficial in certain thermal management or safety-critical applications. The maximum junction temperature of 150°C is 25°C lower than the original specification. The MURF2060CT is classified as obsolete, similar to the original part, which may limit future availability. This component is suitable for applications where the isolated tab feature provides specific design advantages.

Both substitute parts satisfy the mandatory electrical and mechanical parameters required for functional equivalence. Selection between SDUR2060CT and MURF2060CT should be based on product availability requirements, thermal design constraints, and the specific need for isolated tab configuration.

Frequently Asked Questions (FAQ)

Q: Can SDUR2060CT or MURF2060CT be used as direct replacements for STTH20LCD06CT in existing circuit designs?

A: Both substitute parts satisfy all primary substitution criteria: identical diode configuration (1 Pair Common Cathode), reverse voltage rating (600 V), mounting type (Through Hole), package type (TO-220-3), and recovery characteristics (50 ns trr). Pin-to-pin compatibility is maintained. However, the maximum junction temperature of 150°C in both substitutes is 25°C lower than the original 175°C specification. Thermal analysis of the application is required to confirm suitability.

Q: What is the difference between SDUR2060CT and MURF2060CT?

A: Both parts share identical electrical specifications and primary substitution parameters. The key difference is the package variant: SDUR2060CT uses standard TO-220AB packaging, while MURF2060CT uses ITO-220AB (isolated tab) packaging. The isolated tab in MURF2060CT provides electrical isolation between the mounting tab and the semiconductor junction. Additionally, SDUR2060CT is an active product, while MURF2060CT is classified as obsolete.

Q: Why is the forward voltage specification different between the original part and the substitutes?

A: The STTH20LCD06CT specifies a maximum forward voltage of 2 V at 10 A, while both SDUR2060CT and MURF2060CT specify 2.2 V at the same current. This 0.2 V difference reflects manufacturing variations between different semiconductor manufacturers and is within acceptable tolerance for standard rectifier applications. The impact on circuit performance depends on the specific application requirements for voltage drop and power dissipation.

Q: Are there compliance or regulatory differences between these parts?

A: All three parts are ROHS3 compliant and carry unlimited moisture sensitivity rating (MSL 1). The STTH20LCD06CT is REACH Unaffected, while both SDUR2060CT and MURF2060CT are REACH Affected. Applications subject to REACH regulations should verify compliance requirements with the specific substitute part selected.

Q: What is the significance of the isolated tab (ITO-220AB) in MURF2060CT?

A: The isolated tab configuration in MURF2060CT provides electrical isolation between the mounting tab and the semiconductor junction. This design is beneficial in applications requiring thermal management through a heat sink while maintaining electrical isolation, or in safety-critical designs where tab isolation is specified. Standard TO-220AB packaging (SDUR2060CT) does not provide this isolation.

Q: Which substitute part should be selected for new designs?

A: SDUR2060CT is recommended for new designs due to its active product status, ensuring long-term availability and supply chain continuity. MURF2060CT may be selected if the isolated tab feature provides specific design advantages. Both parts satisfy all mandatory electrical and mechanical parameters for functional equivalence.