STTH30R04WY Equivalent & Substitute Parts

Part Overview

The STTH30R04WY is a general-purpose rectifier diode manufactured by STMicroelectronics, rated for 400 V DC reverse voltage and 30 A average rectified current in a DO-247 through-hole package. This component is classified as obsolete, necessitating identification of active equivalent and substitute parts for ongoing design requirements and procurement needs. The part meets automotive-grade specifications with AEC-Q101 qualification and RoHS3 compliance.

Substiute Parts

STTH30R04WY

STMicroelectronicsIn Stock: 1011STTH30R04WY Datasheet

Current PartRFQ

STTH30R04W

STMicroelectronicsIn Stock: 16273STTH30R04W Datasheet

DirectRFQ

DPG30I400HA

IXYSIn Stock: 19755DPG30I400HA Datasheet

SimilarRFQ

SDUR3040W

SMC Diode SolutionsIn Stock: 1709SDUR3040W Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the STTH30R04WY is determined by strict equivalence in the following electrical and mechanical parameters:

Critical Matching Parameters:

• Voltage - DC Reverse (Vr) (Max): 400 V
• Current - Average Rectified (Io): 30 A
• Speed Classification: Fast Recovery ≤ 500ns, > 200mA (Io)
• Mounting Type: Through Hole
• Package / Case: DO-247-2 or compatible TO-247 variants

Acceptable Variation Parameters:

• Voltage - Forward (Vf) (Max) @ If: Equal to or lower than 1.55 V @ 30 A
• Reverse Recovery Time (trr): Equal to or lower than 100 ns
• Current - Reverse Leakage @ Vr: Equal to or lower than 15 µA @ 400 V
• Operating Temperature - Junction: Must encompass or exceed -40°C to 175°C range

The substitute parts listed below meet all critical matching parameters and maintain acceptable variation thresholds for direct circuit substitution.

Parameter Comparison

Engineering Selection Recommendations

STTH30R04W (Direct Equivalent - Recommended Primary Choice)

The STTH30R04W is the direct equivalent manufactured by STMicroelectronics. This part maintains identical electrical specifications to the STTH30R04WY while offering active product status. The STTH30R04W features improved forward voltage (1.45 V vs. 1.55 V @ 30 A), resulting in lower power dissipation. Both parts share the same base product number (STTH30), identical package configuration (DO-247-2), and matching temperature range (-40°C to 175°C). This part is suitable for direct pin-for-pin replacement in existing designs.

DPG30I400HA (Alternative Equivalent - IXYS HiPerFRED²™ Series)

The DPG30I400HA from IXYS meets all critical electrical parameters with enhanced performance characteristics. This part delivers superior reverse recovery time (45 ns vs. 100 ns), significantly lower reverse leakage current (1 µA vs. 15 µA @ 400 V), and improved forward voltage (1.41 V @ 30 A). The extended operating temperature range (-55°C to 175°C) provides additional thermal margin. Package compatibility is maintained through TO-247-2 configuration. This part is suitable for applications requiring enhanced efficiency and thermal performance.

SDUR3040W (Alternative Equivalent - SMC Diode Solutions)

The SDUR3040W from SMC Diode Solutions satisfies all critical electrical requirements with performance improvements including reduced reverse recovery time (45 ns vs. 100 ns) and lower forward voltage (1.41 V @ 30 A). Reverse leakage current is 5 µA @ 400 V, representing a 67% reduction from the original specification. The TO-247-2 package maintains mechanical compatibility. Operating temperature range extends to -55°C minimum, though maximum junction temperature is limited to 150°C. This part is suitable for general-purpose applications where the 150°C maximum does not constrain thermal design margins.

Compliance and Regulatory Status

All substitute parts maintain RoHS3 compliance and EAR99 export classification. The STTH30R04W and DPG30I400HA are REACH Unaffected. The SDUR3040W is REACH Affected, requiring compliance verification for specific end-use applications. All parts carry MSL 1 (Unlimited) moisture sensitivity classification.

Frequently Asked Questions (FAQ)

Q: Can STTH30R04W be used as a direct replacement for STTH30R04WY?

A: Yes. The STTH30R04W is the direct equivalent with identical electrical specifications and package configuration. The primary difference is product status: STTH30R04WY is obsolete while STTH30R04W is active. Forward voltage is improved (1.45 V vs. 1.55 V @ 30 A), resulting in lower power dissipation and heat generation.

Q: What are the package compatibility considerations between DO-247-2 and TO-247-2?

A: Both DO-247-2 and TO-247-2 packages are mechanically compatible through-hole configurations with identical lead spacing and mounting footprints. The primary distinction is nomenclature; both support the same PCB layout and assembly processes. DPG30I400HA and SDUR3040W utilize TO-247-2 designation while maintaining full mechanical compatibility with DO-247-2 designs.

Q: How do the electrical performance differences affect circuit operation?

A: The substitute parts offer improved electrical characteristics. Forward voltage reduction (1.41 V to 1.45 V vs. 1.55 V @ 30 A) decreases power dissipation and junction temperature. Reverse recovery time reduction (45 ns vs. 100 ns) improves switching efficiency and reduces electromagnetic interference. Lower reverse leakage current (1 µA to 5 µA vs. 15 µA @ 400 V) reduces standby power consumption. These improvements are beneficial and do not introduce compatibility issues.

Q: Are there temperature range limitations with substitute parts?

A: The STTH30R04W maintains the original temperature range (-40°C to 175°C). DPG30I400HA extends the minimum to -55°C while maintaining 175°C maximum. SDUR3040W extends the minimum to -55°C but limits maximum to 150°C. For applications operating near 175°C, verify that SDUR3040W thermal design margins remain adequate.

Q: What is the inventory status of substitute parts?

A: STTH30R04W has 16,179 pieces in stock. DPG30I400HA has 19,707 pieces in stock. SDUR3040W has 1,654 pieces in stock. All parts are available as new original components.

Q: Do all substitute parts meet automotive qualification requirements?

A: The STTH30R04WY carries AEC-Q101 automotive qualification. STTH30R04W maintains this qualification as the direct equivalent. DPG30I400HA and SDUR3040W are not explicitly listed with AEC-Q101 qualification in the provided specifications. For automotive applications requiring AEC-Q101 compliance, STTH30R04W is the appropriate selection.

Q: What regulatory compliance differences exist between substitute parts?

A: All parts are RoHS3 compliant and carry EAR99 export classification. STTH30R04W and DPG30I400HA are REACH Unaffected. SDUR3040W is REACH Affected, requiring compliance verification for specific end-use applications and geographic markets.