SF4007-TAP Equivalent & Substitute Parts

Part Overview

The SF4007-TAP is an avalanche diode manufactured by Vishay General Semiconductor - Diodes Division, rated for 1000 V DC reverse voltage and 1 A average rectified current in a through-hole SOD-57 axial package. This component is classified as Active product status and is RoHS3 compliant with unlimited moisture sensitivity level (MSL 1).

Equivalent and substitute parts are necessary when the original SF4007-TAP becomes unavailable, when alternative packaging formats are required for manufacturing processes, or when sourcing from multiple suppliers is needed to optimize inventory and supply chain resilience.

Substiute Parts

SF4007-TAP

Vishay General Semiconductor - Diodes DivisionIn Stock: 1002SF4007-TAP Datasheet

Current PartRFQ

EGP10K

Fairchild SemiconductorIn Stock: 28398EGP10K Datasheet

MFR RecommendedRFQ

PR1006G-T

Diodes IncorporatedIn Stock: 3170PR1006G-T Datasheet

MFR RecommendedRFQ

STTH110

STMicroelectronicsIn Stock: 52346STTH110 Datasheet

MFR RecommendedRFQ

UF1006-T

Diodes IncorporatedIn Stock: 1648UF1006-T Datasheet

MFR RecommendedRFQ

UF4007

Diotec SemiconductorIn Stock: 41628UF4007 Datasheet

MFR RecommendedRFQ

UF4007GP-TP

Micro Commercial CoIn Stock: 40966UF4007GP-TP Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SF4007-TAP is determined by strict alignment of the following electrical and mechanical parameters:

Primary Substitution Criteria:

• Voltage - DC Reverse (Vr) (Max): Must equal or exceed 1000 V
• Current - Average Rectified (Io): Must equal or exceed 1 A
• Voltage - Forward (Vf) (Max) @ If: Must not exceed 1.7 V @ 1 A
• Reverse Recovery Time (trr): Must not exceed 75 ns
• Current - Reverse Leakage @ Vr: Must not exceed 5 µA @ rated voltage
• Speed Classification: Must meet Fast Recovery ≤ 500ns, > 200mA (Io)
• Mounting Type: Must be Through Hole
• Operating Temperature Range: Must accommodate -55°C to 175°C junction temperature

Secondary Compatibility Factors:

• Package / Case: SOD-57 (primary), DO-41, or DO-204AL (alternative axial packages)
• RoHS Status: ROHS3 Compliant preferred
• Moisture Sensitivity Level: MSL 1 (Unlimited) preferred

Substitute parts are grouped into two categories: Full Electrical Equivalents (matching all primary criteria with identical voltage rating) and Functional Equivalents (meeting all primary criteria with reduced voltage rating of 800 V, suitable for applications not requiring the full 1000 V rating).

Parameter Comparison

Engineering Selection Recommendations

Full Electrical Equivalents (1000 V Rating):

STTH110, UF4007, and UF4007GP-TP are direct electrical equivalents to the SF4007-TAP, meeting all primary substitution criteria with identical 1000 V reverse voltage rating. All three are RoHS3 compliant with MSL 1 (Unlimited). STTH110 and UF4007 maintain the full operating temperature range of -55°C to 175°C. UF4007GP-TP operates to 150°C maximum junction temperature, which is acceptable for most applications within the SF4007-TAP's specified range. These parts are suitable for direct substitution in applications requiring the full 1000 V rating and are available in DO-41 or DO-204AL packages compatible with through-hole assembly processes.

Functional Equivalents (800 V Rating):

EGP10K and UF1006-T are functional equivalents with 800 V reverse voltage rating. Both maintain the 1 A current rating, 1.7 V forward voltage, 75 ns reverse recovery time, and 5 µA reverse leakage current. UF1006-T is RoHS3 compliant with MSL 1 (Unlimited). These parts are suitable for applications where the circuit design does not require the full 1000 V rating and where 800 V reverse voltage provides adequate safety margin.

PR1006G-T is a functional equivalent with 800 V rating but exhibits extended reverse recovery time (500 ns) and reduced forward voltage (1.3 V @ 1 A). This part is RoHS3 compliant but should be selected only when these electrical characteristics are compatible with the application requirements.

All substitute parts maintain Active product status and are available in standard through-hole axial packages suitable for PCB assembly.

Frequently Asked Questions (FAQ)

Q: Can STTH110 be used as a direct replacement for SF4007-TAP?

A: Yes. STTH110 meets all primary electrical criteria: 1000 V reverse voltage, 1 A current rating, 1.7 V forward voltage @ 1 A, 75 ns reverse recovery time, and 5 µA reverse leakage current. Both are RoHS3 compliant with MSL 1 (Unlimited). The primary difference is package format: STTH110 is supplied in DO-41 or DO-204AL axial packages, while SF4007-TAP uses SOD-57 axial package. Physical dimensions differ, requiring PCB layout verification.

Q: What is the difference between 1000 V and 800 V rated substitutes?

A: The SF4007-TAP is rated for 1000 V DC reverse voltage. Substitutes rated at 1000 V (STTH110, UF4007, UF4007GP-TP) provide identical voltage capability. Substitutes rated at 800 V (EGP10K, UF1006-T, PR1006G-T) have reduced voltage rating. Selection depends on circuit design requirements. If the application operates at voltages exceeding 800 V, only 1000 V rated parts are suitable. If circuit design includes adequate safety margin below 800 V, 800 V rated parts are acceptable.

Q: Are all substitute parts RoHS3 compliant?

A: STTH110, UF4007, UF4007GP-TP, PR1006G-T, and UF1006-T are confirmed RoHS3 compliant. EGP10K RoHS status is not specified in the provided data. For applications requiring RoHS3 compliance certification, verify EGP10K compliance status with the supplier before selection.

Q: What is the significance of reverse recovery time (trr)?

A: Reverse recovery time is the interval required for a diode to transition from forward conduction to reverse blocking state. SF4007-TAP specifies 75 ns trr. Substitute parts STTH110, UF4007, UF4007GP-TP, and UF1006-T maintain 75 ns trr, ensuring equivalent switching performance. PR1006G-T exhibits 500 ns trr, which is significantly extended and may affect circuit performance in high-frequency applications. Selection of PR1006G-T requires verification that the application tolerates extended recovery time.

Q: Can I use an 800 V rated diode in a circuit designed for 1000 V?

A: No. If the circuit design specifies 1000 V reverse voltage rating, only parts meeting this specification (STTH110, UF4007, UF4007GP-TP) are suitable. Using an 800 V rated part in a 1000 V application creates risk of diode failure and circuit malfunction. Verify circuit voltage requirements before selecting 800 V alternatives.

Q: What are the package compatibility considerations?

A: SF4007-TAP uses SOD-57 axial package. Substitute parts use DO-41 or DO-204AL axial packages. All are through-hole axial formats with similar lead spacing and mounting methods. Physical dimensions differ slightly; verify PCB footprint compatibility before assembly. Axial package orientation (polarity marking) must be verified during installation.

Q: Is MSL 1 (Unlimited) moisture sensitivity important?

A: MSL 1 (Unlimited) indicates the component has no moisture sensitivity restrictions and does not require special handling, storage, or baking procedures. SF4007-TAP and most substitute parts (STTH110, UF4007, UF4007GP-TP, UF1006-T) are MSL 1 compliant. This simplifies inventory management and assembly processes. EGP10K and PR1006G-T MSL status is not specified; verify with supplier if moisture sensitivity restrictions apply.

Q: What operating temperature range should I verify?

A: SF4007-TAP operates from -55°C to 175°C junction temperature. STTH110 and UF4007 maintain this full range. UF4007GP-TP operates to 150°C maximum, which is acceptable for most applications but may be limiting in high-temperature environments. 800 V rated substitutes (EGP10K, UF1006-T, PR1006G-T) operate to 150°C maximum. Verify application temperature requirements and select parts with adequate operating range margin.