STTH1210G Equivalent & Substitute Parts

Part Overview

The STTH1210G is a general-purpose fast recovery rectifier diode manufactured by STMicroelectronics, rated for 1000 V DC reverse voltage and 12 A average rectified current in a D2PAK surface mount package. This component is classified as obsolete, making identification of suitable substitute parts necessary for ongoing design support and procurement continuity. The STTH1210G serves applications requiring high-voltage rectification with fast recovery characteristics in compact surface mount form factors.

Substiute Parts

STTH1210G

STMicroelectronicsIn Stock: 1503STTH1210G Datasheet

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STTH1512G

STMicroelectronicsIn Stock: 1751STTH1512G Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the STTH1210G is determined by compatibility across the following critical parameters:

Mandatory Compatibility Criteria:

• Package / Case: TO-263-3, D2PAK (2 Leads + Tab), TO-263AB
• Mounting Type: Surface Mount
• Speed Classification: Fast Recovery ≤ 500ns, > 200mA (Io)
• Technology: Standard

Allowable Parameter Variations: Substitute parts must maintain or exceed the electrical performance of the STTH1210G in the following parameters:

• Voltage - DC Reverse (Vr) (Max): Substitute must be ≥ 1000 V
• Current - Average Rectified (Io): Substitute must be ≥ 12 A
• Operating Temperature - Junction (Max): Substitute must be ≥ 175°C

Compliance Requirements:

• RoHS Status: ROHS3 Compliant
• REACH Status: REACH Unaffected

The STTH1512G meets all mandatory compatibility criteria and exceeds electrical performance specifications, qualifying it as a direct substitute for the obsolete STTH1210G.

Parameter Comparison

Engineering Selection Recommendations

The STTH1512G is the qualified substitute for the obsolete STTH1210G based on the following engineering criteria:

Package and Mechanical Compatibility: Both components utilize identical D2PAK surface mount packaging (TO-263-3, TO-263AB), ensuring direct PCB footprint compatibility without layout modifications.

Electrical Performance: The STTH1512G exceeds the electrical specifications of the STTH1210G across all critical parameters. The 1200 V reverse voltage rating provides 200 V additional margin over the 1000 V requirement. The 15 A current rating exceeds the 12 A specification by 25%, providing operational headroom. Fast recovery characteristics remain consistent between both components.

Compliance and Regulatory Status: Both components maintain ROHS3 compliance and REACH unaffected status, satisfying regulatory requirements for current manufacturing and deployment. The STTH1512G carries active product status, ensuring long-term availability and supply chain continuity compared to the obsolete STTH1210G.

Thermal Characteristics: Operating temperature ratings are identical at 175°C maximum junction temperature, maintaining thermal design margins in existing applications.

Frequently Asked Questions (FAQ)

Q: Can the STTH1512G be used as a direct replacement for the STTH1210G in existing designs?

A: Yes. The STTH1512G is electrically and mechanically compatible with the STTH1210G. Both components share identical D2PAK surface mount packaging, identical mounting type, and identical fast recovery speed classification. The STTH1512G exceeds the voltage and current specifications of the STTH1210G, making it suitable for direct substitution without circuit redesign.

Q: What are the key differences between the STTH1210G and STTH1512G?

A: The primary differences are voltage rating (1000 V versus 1200 V), current rating (12 A versus 15 A), and product status (obsolete versus active). The STTH1512G provides higher electrical performance margins. Reverse recovery time increases from 90 ns to 105 ns, and reverse leakage current increases from 10 µA to 15 µA at their respective rated voltages. Forward voltage drop increases marginally from 2 V to 2.1 V at their respective rated currents.

Q: Are there any PCB layout considerations when substituting the STTH1512G for the STTH1210G?

A: No layout modifications are required. Both components use identical TO-263-3 D2PAK packaging with the same lead configuration and thermal tab placement. Existing PCB footprints are directly compatible.

Q: Does the STTH1512G require different thermal management compared to the STTH1210G?

A: Thermal management requirements depend on application-specific power dissipation. The STTH1512G supports higher current capacity (15 A versus 12 A) and higher voltage rating (1200 V versus 1000 V), but both components share identical maximum junction temperature ratings of 175°C. Existing thermal design considerations remain applicable.

Q: What is the moisture sensitivity level difference between these components?

A: The STTH1210G has MSL 3 (168 hours), while the STTH1512G has MSL 1 (unlimited). The STTH1512G offers superior moisture resistance, reducing handling and storage constraints during manufacturing and assembly processes.

Q: Are both components RoHS and REACH compliant?

A: Yes. Both the STTH1210G and STTH1512G are ROHS3 compliant and REACH unaffected, meeting current regulatory requirements for electronic component manufacturing and deployment.

Q: Why is the STTH1210G classified as obsolete?

A: Product obsolescence is determined by manufacturer lifecycle decisions. The STTH1512G, as an active product from the same manufacturer with superior electrical specifications and identical packaging, provides continuity for applications previously using the STTH1210G.