DF206ST-G Bridge Rectifier Equivalent & Substitute Parts

Part Overview

The DF206ST-G is a single-phase bridge rectifier manufactured by Comchip Technology, rated for 600 V peak reverse voltage and 2 A average rectified current. This component is classified as obsolete, making identification of equivalent and substitute parts essential for ongoing design support and production continuity. The part is supplied in Tape & Reel packaging with a 4-SMD Gull Wing case configuration.

Key Parameters

Parameter	Value
Diode Type	Single Phase
Technology	Standard
Voltage - Peak Reverse (Max)	600 V
Current - Average Rectified (Io)	2 A
Voltage - Forward (Vf) (Max) @ If	1.1 V @ 2 A
Current - Reverse Leakage @ Vr	10 µA @ 600 V
Operating Temperature Range	-55°C to 150°C (TJ)
Mounting Type	Surface Mount
Package / Case	4-SMD, Gull Wing
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitute parts for the DF206ST-G are identified based on matching the following critical electrical and mechanical parameters:

Voltage - Peak Reverse (Max): 600 V
Current - Average Rectified (Io): 2 A
Diode Type: Single Phase
Technology: Standard
Operating Temperature Range: -55°C to 150°C (TJ)
Mounting Type: Surface Mount
Package / Case: 4-SMD, Gull Wing

Two substitute parts meet these criteria: DF206S-G (parametric equivalent from Comchip Technology) and SDB205-TP (manufacturer-recommended alternative from Micro Commercial Co). Both maintain identical electrical performance specifications and physical form factor compatibility with the original DF206ST-G design.

Parameter Comparison

Parameter	DF206ST-G	DF206S-G	SDB205-TP
Manufacturer	Comchip Technology	Comchip Technology	Micro Commercial Co
Diode Type	Single Phase	Single Phase	Single Phase
Technology	Standard	Standard	Standard
Voltage - Peak Reverse (Max)	600 V	600 V	600 V
Current - Average Rectified (Io)	2 A	2 A	2 A
Voltage - Forward (Vf) (Max) @ If	1.1 V @ 2 A	1.1 V @ 2 A	1.2 V @ 2 A
Current - Reverse Leakage @ Vr	10 µA @ 600 V	10 µA @ 600 V	10 µA @ 600 V
Operating Temperature Range	-55°C to 150°C (TJ)	-55°C to 150°C (TJ)	-55°C to 150°C (TJ)
Mounting Type	Surface Mount	Surface Mount	Surface Mount
Package / Case	4-SMD, Gull Wing	4-SMD, Gull Wing	4-SMD, Gull Wing
Product Status	Obsolete	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Not specified
Packaging	Tape & Reel (TR)	Tube	Bulk

Engineering Selection Recommendations

DF206S-G is the primary parametric equivalent, manufactured by Comchip Technology with identical electrical specifications and ROHS3 compliance. This part is currently in active production status with higher inventory availability (12,630 pcs) compared to the obsolete DF206ST-G. The only difference is packaging format (Tube versus Tape & Reel), which does not affect electrical or mechanical compatibility.

SDB205-TP from Micro Commercial Co is a manufacturer-recommended alternative that maintains all critical electrical parameters and physical form factor. The forward voltage specification is 1.2 V @ 2 A compared to 1.1 V @ 2 A for the DF206ST-G, representing a 0.1 V increase within acceptable operating margins for standard bridge rectifier applications. This part is also in active production status.

Both substitute parts are suitable for direct replacement in applications where the DF206ST-G is specified, provided that the packaging format and forward voltage characteristics are compatible with the end-use circuit design.

Frequently Asked Questions (FAQ)

Q: Can DF206S-G be used as a direct replacement for DF206ST-G?

A: Yes. DF206S-G is a parametric equivalent with identical electrical specifications (600 V, 2 A, 1.1 V forward voltage, -55°C to 150°C operating range) and the same 4-SMD Gull Wing package. The only difference is the packaging format (Tube instead of Tape & Reel), which does not affect component functionality or PCB assembly compatibility.

Q: What is the difference between DF206S-G and SDB205-TP?

A: Both parts meet the core electrical requirements (600 V, 2 A, -55°C to 150°C). The primary difference is forward voltage: DF206S-G specifies 1.1 V @ 2 A while SDB205-TP specifies 1.2 V @ 2 A. Both are manufactured in the same 4-SMD Gull Wing package. SDB205-TP is from a different manufacturer (Micro Commercial Co versus Comchip Technology).

Q: Why is the DF206ST-G obsolete?

A: The DF206ST-G is classified as obsolete by the manufacturer. DF206S-G is the active production equivalent from the same manufacturer and should be used for new designs and ongoing production requirements.

Q: Are there any compliance differences between these parts?

A: DF206ST-G and DF206S-G are both ROHS3 compliant. RoHS status is not specified for SDB205-TP in the available data. All three parts are EAR99 classified and HTSUS 8541.10.0080 coded.

Q: Can SDB205-TP be used if forward voltage is critical to my application?

A: SDB205-TP has a maximum forward voltage of 1.2 V @ 2 A compared to 1.1 V @ 2 A for DF206ST-G and DF206S-G. If your circuit design requires the lower forward voltage specification, use DF206S-G. If your design can accommodate 1.2 V forward voltage, SDB205-TP is compatible.

Q: What is the moisture sensitivity level for these parts?

A: DF206ST-G and DF206S-G both have MSL 1 (Unlimited), indicating no moisture sensitivity restrictions. MSL data is not provided for SDB205-TP.

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