SF64-TP Equivalent & Substitute Parts

Part Overview

The SF64-TP is a general-purpose rectifier diode rated for 200 V DC reverse voltage and 6 A average rectified current in a DO-201AD axial through-hole package. This component is classified as obsolete, necessitating identification of equivalent and substitute parts for ongoing design support and procurement. Substitute parts must maintain electrical compatibility across voltage, current, and thermal specifications while accommodating packaging and availability constraints.

Key Parameters

Parameter	Value
Voltage - DC Reverse (Vr) (Max)	200 V
Current - Average Rectified (Io)	6 A
Voltage - Forward (Vf) (Max) @ If	975 mV @ 6 A
Reverse Recovery Time (trr)	35 ns
Current - Reverse Leakage @ Vr	5 µA @ 200 V
Package / Case	DO-201AD, Axial
Mounting Type	Through Hole
Operating Temperature - Junction	-65°C ~ 125°C
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution of the SF64-TP is determined by the following critical parameters:

Primary Compatibility Criteria:

Voltage - DC Reverse (Vr) (Max): Must equal or exceed 200 V
Current - Average Rectified (Io): Must equal or exceed 6 A
Package / Case: Must be DO-201AD, Axial through-hole
Mounting Type: Must be Through Hole

Secondary Compatibility Criteria:

Reverse Recovery Time (trr): Fast recovery characteristics (≤ 500 ns)
Operating Temperature Range: Must accommodate application requirements
RoHS Compliance: ROHS3 Compliant status required

Substitute Classification:

Direct Equivalent: SF64G-TP meets all primary and secondary criteria with identical electrical specifications and active product status.

Similar Substitute: 1N5402-E3/73 shares the same package and voltage rating but differs in current capacity (3 A vs. 6 A) and recovery speed characteristics. This part is suitable only for applications where the 6 A current requirement can be reduced or where parallel configurations are implemented.

Parameter Comparison

Parameter	SF64-TP (Main)	SF64G-TP (Direct)	1N5402-E3/73 (Similar)
Manufacturer	Micro Commercial Co	Micro Commercial Co	Vishay General Semiconductor - Diodes Division
Product Status	Obsolete	Active	Active
Voltage - DC Reverse (Vr) (Max)	200 V	200 V	200 V
Current - Average Rectified (Io)	6 A	6 A	3 A
Voltage - Forward (Vf) (Max) @ If	975 mV @ 6 A	975 mV @ 6 A	1.2 V @ 3 A
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)	Standard Recovery >500ns, > 200mA (Io)
Reverse Recovery Time (trr)	35 ns	35 ns	Not specified
Current - Reverse Leakage @ Vr	5 µA @ 200 V	5 µA @ 200 V	5 µA @ 200 V
Capacitance @ Vr, F	120pF @ 4V, 1MHz	120pF @ 4V, 1MHz	30pF @ 4V, 1MHz
Package / Case	DO-201AD, Axial	DO-201AD, Axial	DO-201AD, Axial
Mounting Type	Through Hole	Through Hole	Through Hole
Operating Temperature - Junction	-65°C ~ 125°C	-55°C ~ 150°C	-50°C ~ 150°C
Packaging	Bulk	Tape & Reel (TR)	Cut Tape (CT)
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Inventory Status	1108 Pcs New Original In Stock	1036 Pcs New Original In Stock	8117 Pcs New Original In Stock

Engineering Selection Recommendations

For Direct Replacement (Recommended):

SF64G-TP is the primary substitute for SF64-TP. Both components are manufactured by Micro Commercial Co and share identical electrical specifications including voltage rating (200 V), current capacity (6 A), forward voltage drop (975 mV @ 6 A), and recovery time (35 ns). SF64G-TP carries active product status, ensuring long-term availability and supply chain continuity. The extended operating temperature range (-55°C ~ 150°C vs. -65°C ~ 125°C) provides additional thermal margin for most applications. Packaging differs (Tape & Reel vs. bulk), which may affect procurement workflows but does not impact electrical performance.

For Current-Limited Applications:

1N5402-E3/73 is suitable only when application requirements permit reduction of average rectified current from 6 A to 3 A. This part maintains the 200 V voltage rating and DO-201AD package compatibility. However, the standard recovery speed (>500 ns) differs from the fast recovery characteristic of SF64-TP, potentially affecting switching performance in high-frequency applications. The higher forward voltage drop (1.2 V @ 3 A) results in increased power dissipation compared to SF64-TP. This substitute is not recommended for direct replacement in circuits designed for 6 A operation.

Compliance Considerations:

All identified substitutes maintain ROHS3 compliance and Moisture Sensitivity Level 1 (Unlimited), ensuring regulatory and environmental compatibility with the original SF64-TP specification.

Frequently Asked Questions (FAQ)

Q: Can SF64G-TP be used as a direct replacement for SF64-TP?

A: Yes. SF64G-TP is electrically and mechanically equivalent to SF64-TP. Both components share identical voltage (200 V), current (6 A), forward voltage drop (975 mV @ 6 A), and recovery time (35 ns) specifications. The primary difference is product status: SF64G-TP is active, while SF64-TP is obsolete. Packaging format differs (Tape & Reel vs. bulk), but this does not affect circuit performance.

Q: Is 1N5402-E3/73 a suitable replacement for SF64-TP?

A: 1N5402-E3/73 is not a direct replacement. While both components share the same 200 V voltage rating and DO-201AD package, the 1N5402-E3/73 is rated for only 3 A average rectified current compared to SF64-TP's 6 A rating. Additionally, 1N5402-E3/73 exhibits standard recovery speed (>500 ns) rather than fast recovery (≤ 500 ns). Use 1N5402-E3/73 only in applications where current requirements do not exceed 3 A and standard recovery speed is acceptable.

Q: What are the key parameters that determine substitution compatibility?

A: Substitution compatibility is determined by: (1) Voltage - DC Reverse (Vr) rating must equal or exceed 200 V; (2) Current - Average Rectified (Io) must equal or exceed 6 A; (3) Package / Case must be DO-201AD, Axial; (4) Mounting Type must be Through Hole; (5) Recovery speed should maintain fast recovery characteristics (≤ 500 ns) for equivalent performance.

Q: Does the operating temperature range difference between SF64-TP and SF64G-TP affect substitution?

A: The operating temperature ranges differ: SF64-TP operates from -65°C to 125°C, while SF64G-TP operates from -55°C to 150°C. For applications within the overlapping range (-55°C to 125°C), both components are fully compatible. For applications requiring operation below -55°C, SF64-TP is required. For applications requiring operation above 125°C, SF64G-TP provides extended capability.

Q: What is the impact of packaging format differences?

A: SF64-TP is supplied in bulk packaging, while SF64G-TP is supplied in Tape & Reel (TR) format. This difference affects procurement and assembly processes but does not impact electrical or mechanical performance. Tape & Reel packaging is standard for automated assembly operations, while bulk packaging may be preferred for manual assembly or small-volume applications.

Q: Are all substitute parts RoHS compliant?

A: Yes. SF64G-TP and 1N5402-E3/73 are both ROHS3 Compliant, matching the compliance status of SF64-TP. All identified substitutes meet current environmental and regulatory requirements.

Q: What is the difference in forward voltage drop between SF64-TP and 1N5402-E3/73?

A: SF64-TP exhibits a forward voltage drop of 975 mV at 6 A, while 1N5402-E3/73 exhibits 1.2 V at 3 A. The higher forward voltage drop in 1N5402-E3/73 results in increased power dissipation. This difference, combined with the lower current rating, makes 1N5402-E3/73 unsuitable for direct replacement in circuits designed for SF64-TP operation.

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