SF66G-TP Equivalent & Substitute Parts

Part Overview

The SF66G-TP is a general-purpose rectifier diode manufactured by Micro Commercial Co, rated for 400 V DC reverse voltage and 6 A average rectified current in a DO-201AD axial through-hole package. This component is classified as Active product status and is RoHS3 compliant. Substitute parts are identified when equivalent electrical performance, mechanical compatibility, and regulatory compliance can be maintained across alternative manufacturers and packaging configurations.

Key Parameters

Parameter	Value
Voltage - DC Reverse (Vr) (Max)	400 V
Current - Average Rectified (Io)	6 A
Voltage - Forward (Vf) (Max) @ If	1.3 V @ 6 A
Reverse Recovery Time (trr)	35 ns
Current - Reverse Leakage @ Vr	5 µA @ 400 V
Speed Classification	Fast Recovery ≤ 500ns, > 200mA (Io)
Package / Case	DO-201AD, Axial
Mounting Type	Through Hole
Operating Temperature - Junction	-55°C ~ 150°C
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitute parts for the SF66G-TP are identified based on strict electrical and mechanical parameter equivalence. The following criteria determine substitution eligibility:

Critical Matching Parameters:

Voltage - DC Reverse (Vr) (Max): 400 V
Current - Average Rectified (Io): 6 A
Voltage - Forward (Vf) (Max) @ If: 1.3 V @ 6 A
Reverse Recovery Time (trr): 35 ns
Current - Reverse Leakage @ Vr: 5 µA @ 400 V
Package / Case: DO-201AD, Axial
Mounting Type: Through Hole
Operating Temperature - Junction: -55°C ~ 150°C
RoHS Status: ROHS3 Compliant

All identified substitute parts maintain these electrical specifications and mechanical compatibility. Variations in packaging format (Tape & Reel versus Cut Tape) and capacitance values do not affect functional substitution within the specified application parameters.

Parameter Comparison

Parameter	SF66G-TP (Micro Commercial Co)	SF66G (Taiwan Semiconductor)	SF66GH (Taiwan Semiconductor)
Voltage - DC Reverse (Vr) (Max)	400 V	400 V	400 V
Current - Average Rectified (Io)	6 A	6 A	6 A
Voltage - Forward (Vf) (Max) @ If	1.3 V @ 6 A	1.3 V @ 6 A	1.3 V @ 6 A
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)
Reverse Recovery Time (trr)	35 ns	35 ns	35 ns
Current - Reverse Leakage @ Vr	5 µA @ 400 V	5 µA @ 400 V	5 µA @ 400 V
Capacitance @ Vr, F	90pF @ 4V, 1MHz	50pF @ 4V, 1MHz	50pF @ 4V, 1MHz
Mounting Type	Through Hole	Through Hole	Through Hole
Package / Case	DO-201AD, Axial	DO-201AD, Axial	DO-201AD, Axial
Operating Temperature - Junction	-55°C ~ 150°C	-55°C ~ 150°C	-55°C ~ 150°C
Product Status	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
Grade	Standard	Standard	Automotive
Qualification	Not specified	Not specified	AEC-Q101

Engineering Selection Recommendations

SF66G (Taiwan Semiconductor Corporation)

The SF66G is a parametric equivalent to the SF66G-TP with identical electrical specifications and mechanical compatibility. Both parts maintain 400 V reverse voltage rating, 6 A average rectified current, and fast recovery characteristics. The SF66G is supplied in Cut Tape packaging format and carries Active product status with ROHS3 compliance. This substitute is suitable for applications where packaging format flexibility is acceptable and standard-grade qualification is sufficient.

SF66GH (Taiwan Semiconductor Corporation)

The SF66GH is a parametric equivalent with automotive-grade qualification and AEC-Q101 certification. All electrical specifications and mechanical parameters match the SF66G-TP. The SF66GH is supplied in Cut Tape packaging and is designated for automotive applications requiring AEC-Q101 qualification. This substitute is appropriate for automotive and mission-critical applications where enhanced qualification standards are specified.

Both substitute parts are Active status components with ROHS3 compliance, unlimited moisture sensitivity level (MSL 1), and identical operating temperature ranges (-55°C to 150°C).

Frequently Asked Questions (FAQ)

Q: Can SF66G or SF66GH be used as direct replacements for SF66G-TP in existing designs?

A: Yes. Both substitute parts maintain identical electrical specifications including 400 V reverse voltage, 6 A average rectified current, 1.3 V forward voltage at 6 A, and 35 ns reverse recovery time. The DO-201AD axial through-hole package is identical across all three parts, ensuring mechanical compatibility in PCB layouts and circuit designs.

Q: What is the difference between SF66G and SF66GH?

A: The SF66GH includes automotive-grade qualification and AEC-Q101 certification, making it suitable for automotive applications. The SF66G is standard-grade. Both parts are electrically and mechanically equivalent to the SF66G-TP. Selection between these substitutes depends on application requirements for automotive qualification.

Q: Does the capacitance difference between SF66G-TP (90pF) and the substitute parts (50pF) affect substitution?

A: The capacitance specification is provided for reference but does not prevent substitution. Both values fall within acceptable ranges for general-purpose rectifier diode applications at the specified voltage and frequency conditions (4V, 1MHz).

Q: What is the difference between Tape & Reel and Cut Tape packaging?

A: Tape & Reel (TR) packaging is supplied on continuous tape wound on reels for automated assembly processes. Cut Tape (CT) packaging is supplied as individual tape segments. Both formats contain identical components. Selection depends on assembly equipment compatibility and procurement requirements.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. The SF66G-TP, SF66G, and SF66GH are all ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity level, ensuring compatibility with modern manufacturing and environmental standards.

Q: Which substitute should be selected for automotive applications?

A: The SF66GH is qualified for automotive applications with AEC-Q101 certification. This part is appropriate when automotive-grade qualification is specified in design requirements or procurement standards.

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