STTH1004FP Equivalent & Substitute Parts

Part Overview

The STTH1004FP is an active, through-hole rectifier diode manufactured by STMicroelectronics, rated for 400 V DC reverse voltage and 10 A average rectified current. This fast recovery diode is designed for general-purpose rectification applications requiring standard technology performance in a TO-220-2 Full Pack configuration. Substitute parts are identified to address application requirements where higher voltage ratings, improved reverse recovery characteristics, or alternative inventory availability are necessary.

Substiute Parts

STTH1004FP

STMicroelectronicsIn Stock: 26975STTH1004FP Datasheet

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STTH10LCD06FP

STMicroelectronicsIn Stock: 71991STTH10LCD06FP Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the STTH1004FP is permissible when the following conditions are met:

Mandatory Compatibility Criteria:

• Mounting Type: Through Hole (maintained)
• Package / Case: TO-220-2 Full Pack (maintained)
• Current - Average Rectified (Io): 10 A (maintained)
• Operating Temperature - Junction: 175°C (maintained or exceeded)
• Product Status: Active (maintained)
• RoHS Status: ROHS3 Compliant (maintained)

Allowable Parameter Variations:

• Voltage - DC Reverse (Vr) (Max): Equal to or greater than 400 V
• Voltage - Forward (Vf) (Max) @ If: Equal to or less than 1.7 V @ 10 A
• Reverse Recovery Time (trr): Equal to or less than 140 ns
• Current - Reverse Leakage @ Vr: Equal to or less than 1 µA @ rated voltage

The STTH10LCD06FP meets all mandatory criteria and qualifies as a direct substitute with enhanced voltage rating and improved reverse recovery characteristics.

Parameter Comparison

Engineering Selection Recommendations

STTH1004FP Selection: Select the STTH1004FP when the application requires a 400 V rated rectifier diode with standard fast recovery characteristics and forward voltage of 1.7 V maximum at 10 A. This part is active and ROHS3 compliant, suitable for general-purpose rectification in power supply and converter circuits operating at or below 400 V reverse voltage.

STTH10LCD06FP Selection: Select the STTH10LCD06FP as a substitute when the application requires higher voltage margin or operates at voltages exceeding 400 V but not exceeding 600 V. This part provides improved reverse recovery time (50 ns versus 140 ns), reducing switching losses in high-frequency applications. Both parts maintain identical current ratings, mounting configuration, and thermal specifications. The STTH10LCD06FP is active and ROHS3 compliant, with REACH Unaffected status identical to the primary part.

Compliance Considerations: Both parts satisfy ROHS3 compliance and REACH Unaffected requirements. Both are classified under ECCN EAR99 and HTSUS 8541.10.0080. Selection between these parts does not introduce compliance complications.

Frequently Asked Questions (FAQ)

Q: Can the STTH10LCD06FP directly replace the STTH1004FP in all applications?

A: The STTH10LCD06FP is mechanically and electrically compatible as a substitute. Both parts share identical mounting type (Through Hole), package configuration (TO-220-2 Full Pack), current rating (10 A), and maximum junction temperature (175°C). The STTH10LCD06FP provides higher voltage rating (600 V versus 400 V) and faster reverse recovery (50 ns versus 140 ns). Forward voltage increases from 1.7 V to 2 V at 10 A. Substitution is valid when the application circuit can tolerate the increased forward voltage drop and does not require the lower voltage rating of the STTH1004FP.

Q: What is the difference in reverse recovery time between these parts?

A: The STTH1004FP has a reverse recovery time of 140 ns, while the STTH10LCD06FP has a reverse recovery time of 50 ns. Both parts meet the fast recovery classification (≤ 500 ns, > 200 mA). The faster recovery time of the STTH10LCD06FP reduces switching losses and is beneficial in high-frequency switching applications.

Q: Are there packaging differences between these parts?

A: Both parts use identical packaging: TO-220-2 Full Pack with supplier device package designation TO-220FPAC. No mechanical or thermal interface modifications are required when substituting between these parts.

Q: What is the impact of the forward voltage difference?

A: The STTH10LCD06FP has a maximum forward voltage of 2 V at 10 A, compared to 1.7 V for the STTH1004FP. This 0.3 V difference results in increased power dissipation in the diode. For a 10 A load, this represents an additional 3 W of heat generation. Thermal design must account for this increase if the STTH10LCD06FP is substituted in applications with marginal thermal headroom.

Q: Do these parts have different reverse leakage characteristics?

A: The STTH1004FP has reverse leakage of 1 µA at 400 V, while the STTH10LCD06FP has reverse leakage of 5 µA at 600 V. The higher leakage current in the STTH10LCD06FP is measured at a higher voltage rating. Applications sensitive to leakage current should evaluate this parameter in the context of their specific operating voltage.

Q: Are both parts currently available?

A: Both parts have Active product status. The STTH1004FP has 26,964 pieces in stock, and the STTH10LCD06FP has 71,905 pieces in stock as new original inventory.