SF10HG-T Equivalent & Substitute Parts

Part Overview

The SF10HG-T is a general-purpose rectifier diode manufactured by Diodes Incorporated, rated for 500 V DC reverse voltage and 1 A average rectified current in a DO-41 through-hole package. This component is classified as obsolete, making identification of equivalent and substitute parts necessary for ongoing design support, maintenance, and production continuity. Substitute parts must maintain electrical compatibility across voltage, current, and thermal specifications while accommodating the through-hole axial package format.

Substiute Parts

SF10HG-T

Diodes IncorporatedIn Stock: 887SF10HG-T Datasheet

Current PartRFQ

GP10-4005E-E3/53

Vishay General Semiconductor - Diodes DivisionIn Stock: 918GP10-4005E-E3/53 Datasheet

MFR RecommendedRFQ

STTH1L06RL

STMicroelectronicsIn Stock: 3800STTH1L06RL Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SF10HG-T are selected based on the following critical parameters:

Electrical Compatibility Requirements:

• Voltage - DC Reverse (Vr) rating must equal or exceed 500 V
• Current - Average Rectified (Io) rating must equal or exceed 1 A
• Forward voltage drop (Vf) must be compatible with circuit design tolerances
• Reverse recovery time (trr) classification must support the intended switching application

Mechanical Compatibility Requirements:

• Mounting type must be through-hole
• Package format must be DO-41 or DO-204AL (axial leads)

Compliance Requirements:

• RoHS3 compliance required
• Operating temperature range must support -65°C to 150°C minimum

Substitute parts are grouped into two categories: direct electrical equivalents and functional alternatives with enhanced specifications.

Parameter Comparison

Engineering Selection Recommendations

GP10-4005E-E3/53 (Vishay General Semiconductor)

This part provides direct voltage and current rating equivalence to the SF10HG-T at 500 V and 1 A. The GP10-4005E-E3/53 is an active product with ROHS3 compliance and extended operating temperature range to 175°C. Forward voltage is reduced to 1.1 V compared to the SF10HG-T specification of 1.5 V, resulting in lower power dissipation. The standard recovery speed classification (trr = 3 µs) differs from the fast recovery characteristic of the SF10HG-T; this substitution is suitable for applications where switching speed is not a critical constraint. Inventory availability is confirmed at 838 pieces.

STTH1L06RL (STMicroelectronics)

This part exceeds the voltage specification of the SF10HG-T with a 600 V DC reverse rating while maintaining 1 A current capacity. The STTH1L06RL retains fast recovery speed characteristics (trr = 80 ns) comparable to the SF10HG-T (trr = 50 ns), making it suitable for switching applications requiring rapid diode turn-off. Forward voltage is specified at 1.3 V @ 1 A, intermediate between the main part and the Vishay alternative. Reverse leakage current is significantly lower at 1 µA @ 600 V. The part is active with ROHS3 compliance and extended temperature rating to 175°C. Inventory availability is confirmed at 3766 pieces. The higher voltage rating provides design margin for applications subject to transient overvoltage conditions.

Both substitute parts satisfy mechanical compatibility through DO-41 axial through-hole packaging and compliance requirements through ROHS3 certification and unlimited moisture sensitivity level (MSL 1).

Frequently Asked Questions (FAQ)

Q: Can the GP10-4005E-E3/53 replace the SF10HG-T in all applications?

A: The GP10-4005E-E3/53 provides equivalent voltage and current ratings. However, the reverse recovery time differs significantly (3 µs versus 50 ns). In applications where fast switching or low reverse recovery losses are required, this substitution may not be suitable. In linear rectification or low-frequency applications, the GP10-4005E-E3/53 is compatible.

Q: What is the advantage of using STTH1L06RL over the SF10HG-T?

A: The STTH1L06RL provides three technical advantages: (1) higher voltage rating (600 V versus 500 V) for improved transient overvoltage margin, (2) lower reverse leakage current (1 µA versus 10 µA) for reduced standby power consumption, and (3) comparable fast recovery speed (80 ns versus 50 ns) for switching applications. The part is active with confirmed long-term availability.

Q: Are all substitute parts available in the same DO-41 package?

A: Yes. Both GP10-4005E-E3/53 and STTH1L06RL are specified for DO-204AL and DO-41 axial through-hole packages, providing direct mechanical compatibility with the SF10HG-T footprint and assembly process.

Q: What is the impact of forward voltage differences between these parts?

A: Forward voltage differences affect power dissipation and heat generation. The SF10HG-T specifies 1.5 V @ 1 A, while GP10-4005E-E3/53 specifies 1.1 V @ 1 A and STTH1L06RL specifies 1.3 V @ 1 A. In a 1 A application, the Vishay part dissipates 0.4 W less than the original part. Circuit designs with tight thermal budgets benefit from lower forward voltage; designs with adequate thermal margin are unaffected.

Q: Do all parts meet RoHS and REACH compliance requirements?

A: Both substitute parts are ROHS3 compliant. The GP10-4005E-E3/53 is REACH Unaffected, while the STTH1L06RL is REACH Unaffected. The original SF10HG-T is REACH Affected. For applications requiring REACH compliance, either substitute part is acceptable.

Q: What is the temperature operating range difference?

A: The SF10HG-T operates to 150°C maximum junction temperature. Both substitute parts extend this to 175°C, providing 25°C additional thermal margin. This allows operation in higher ambient temperature environments or with higher power dissipation without exceeding junction temperature limits.