DF005ST-G Bridge Rectifier Equivalent & Substitute Parts

Part Overview

The DF005ST-G is a single-phase bridge rectifier diode manufactured by Comchip Technology, rated for 50 V peak reverse voltage and 1 A average rectified current in a 4-SMD, Gull Wing surface mount package. This part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement.

Bridge rectifiers in this electrical class are used in AC-to-DC conversion applications requiring low-voltage, low-current rectification. Substitute parts must maintain identical electrical performance within the specified parameter ranges to ensure direct replacement capability.

Key Parameters

Parameter	DF005ST-G Value
Voltage - Peak Reverse (Max)	50 V
Current - Average Rectified (Io)	1 A
Voltage - Forward (Vf) (Max) @ If	1.1 V @ 1 A
Current - Reverse Leakage @ Vr	10 µA @ 50 V
Operating Temperature Range	-55°C ~ 150°C (TJ)
Mounting Type	Surface Mount
Package / Case	4-SMD, Gull Wing
Diode Type	Single Phase
Technology	Standard

Substitute Part Grouping Explanation

Substitution eligibility for the DF005ST-G is determined by the following mandatory parameters:

Voltage - Peak Reverse (Max): Must equal 50 V
Current - Average Rectified (Io): Must equal 1 A
Diode Type: Must be Single Phase
Technology: Must be Standard
Operating Temperature Range: Must span -55°C ~ 150°C (TJ)
Mounting Type: Must be Surface Mount
Package / Case: Must be 4-SMD, Gull Wing

All substitute parts listed below meet these electrical and mechanical requirements. Variations in reverse leakage current, forward voltage characteristics, and manufacturer-specific package designations do not affect substitution eligibility when all primary parameters are satisfied.

Parameter Comparison

Part Number	Manufacturer	Product Status	Vr (Max)	Io	Vf (Max) @ If	Ir @ Vr	Temp Range	Package
DF005ST-G	Comchip Technology	Obsolete	50 V	1 A	1.1 V @ 1 A	10 µA @ 50 V	-55°C ~ 150°C	4-SMD, Gull Wing
DF005S-HF	Comchip Technology	Active	50 V	1 A	1.1 V @ 1 A	10 µA @ 50 V	-55°C ~ 150°C	4-SMD, Gull Wing
ABS05-HF	Comchip Technology	Active	50 V	1 A	1.1 V @ 1 A	5 µA @ 50 V	-55°C ~ 150°C	4-SMD, Gull Wing
DB101S	SMC Diode Solutions	Active	50 V	1 A	1.1 V @ 1 A	5 µA @ 50 V	-55°C ~ 150°C	4-SMD, Gull Wing
DBLS101G RDG	Taiwan Semiconductor Corporation	Active	50 V	1 A	1.1 V @ 1 A	2 µA @ 50 V	-55°C ~ 150°C	4-SMD, Gull Wing
DBLS101GHRDG	Taiwan Semiconductor Corporation	Active	50 V	1 A	1.1 V @ 1 A	2 µA @ 50 V	-55°C ~ 150°C	4-SMD, Gull Wing
DF005S-E3/77	Vishay General Semiconductor - Diodes Division	Active	50 V	1 A	1.1 V @ 1 A	5 µA @ 50 V	-55°C ~ 150°C	4-SMD, Gull Wing
DF005S1	Fairchild Semiconductor	Active	50 V	1 A	1.1 V @ 1 A	3 µA @ 50 V	-55°C ~ 150°C	4-SMD, Gull Wing
DF005SA-E3/77	Vishay General Semiconductor - Diodes Division	Active	50 V	1 A	1.1 V @ 1 A	5 µA @ 50 V	-55°C ~ 150°C	4-SMD, Gull Wing

Engineering Selection Recommendations

All listed substitute parts are electrically and mechanically compatible with the DF005ST-G. Selection among active alternatives should be based on the following factors:

Manufacturer Continuity: DF005S-HF (Comchip Technology) provides the closest product lineage to the obsolete DF005ST-G, maintaining the same manufacturer and electrical specifications.

Compliance Status: All substitute parts carry ROHS3 compliance. DF005S-E3/77 and DF005SA-E3/77 (Vishay) offer the highest inventory availability at 10,400 and 33,800 units respectively, supporting long-term supply chain stability.

Automotive Grade: DBLS101GHRDG includes AEC-Q101 automotive qualification, suitable for applications requiring automotive-grade component certification.

Reverse Leakage Performance: DBLS101G RDG and DBLS101GHRDG feature the lowest reverse leakage current at 2 µA @ 50 V, compared to the original specification of 10 µA @ 50 V, providing enhanced performance margin.

Frequently Asked Questions (FAQ)

Q: Can DF005S-HF directly replace DF005ST-G? A: Yes. DF005S-HF meets all electrical and mechanical parameters of DF005ST-G and is manufactured by the same supplier, Comchip Technology. Both are rated for 50 V, 1 A, with identical forward voltage and operating temperature specifications.

Q: What is the difference between DF005S-E3/77 and DF005SA-E3/77? A: Both parts are manufactured by Vishay and meet identical electrical specifications for the DF005ST-G application. DF005SA-E3/77 offers significantly higher inventory availability (33,800 units vs. 10,400 units), making it preferable for high-volume procurement.

Q: Are there package differences among the substitute parts? A: All substitute parts use the 4-SMD, Gull Wing package configuration. Supplier device package designations (DFS, ABS, DB-S, DBLS) are manufacturer-specific identifiers but do not affect physical compatibility or PCB footprint.

Q: Why do some substitutes have lower reverse leakage current? A: Reverse leakage current variation reflects different semiconductor manufacturing processes and die designs. Lower leakage (2 µA vs. 10 µA) indicates enhanced performance but does not affect functional substitution eligibility. The original DF005ST-G specification of 10 µA @ 50 V remains the maximum allowable threshold.

Q: Is DBLS101GHRDG suitable for automotive applications? A: DBLS101GHRDG carries AEC-Q101 automotive qualification and is designated as automotive grade. This part is appropriate for applications requiring automotive-grade component certification. Standard industrial applications do not require this qualification.

Q: What is the recommended substitute if inventory is critical? A: DF005SA-E3/77 offers the highest inventory availability at 33,800 units in stock, followed by DF005S-E3/77 at 10,400 units. Both are active products from Vishay with confirmed ROHS3 compliance and long-term supply stability.

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