DB103S-G Bridge Rectifier Equivalent & Substitute Parts

Part Overview

The DB103S-G is a single-phase bridge rectifier diode manufactured by Comchip Technology, rated for 200 V peak reverse voltage and 1 A average rectified current in a 4-SMD surface mount package. This part is currently obsolete, making equivalent and substitute parts necessary for ongoing design support and production continuity. Substitute parts maintain the same electrical specifications and mechanical form factor while offering active product status from alternative manufacturers.

Key Parameters

Parameter	Value
Diode Type	Single Phase
Technology	Standard
Voltage - Peak Reverse (Max)	200 V
Current - Average Rectified (Io)	1 A
Voltage - Forward (Vf) (Max) @ If	1.1 V @ 1 A
Operating Temperature	-55°C ~ 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 DB103S-G are qualified based on the following criteria:

Primary Electrical Parameters:

Voltage - Peak Reverse (Max): 200 V
Current - Average Rectified (Io): 1 A
Diode Type: Single Phase
Technology: Standard
Operating Temperature Range: -55°C ~ 150°C (TJ)

Mechanical Parameters:

Mounting Type: Surface Mount
Package / Case: 4-SMD, Gull Wing

Compliance Parameters:

RoHS3 Compliant
Moisture Sensitivity Level (MSL): 1 (Unlimited)

Substitute parts may vary in forward voltage (Vf) and reverse leakage current (Ir) within acceptable ranges for this application class, as these parameters do not affect functional interchangeability in standard rectification circuits. All qualified substitutes maintain identical voltage and current ratings, temperature range, and mechanical form factor.

Parameter Comparison

Part Number	Manufacturer	Vr (Max)	Io	Vf (Max) @ If	Ir @ Vr	Temp Range	Package	Status
DB103S-G	Comchip Technology	200 V	1 A	1.1 V @ 1 A	10 µA @ 200 V	-55°C ~ 150°C	4-SMD, Gull Wing	Obsolete
DB103S-HF	Comchip Technology	200 V	1 A	1.1 V @ 1 A	10 µA @ 200 V	-55°C ~ 150°C	4-SMD, Gull Wing	Active
ABS2-HF	Comchip Technology	200 V	1 A	1.1 V @ 1 A	5 µA @ 200 V	-55°C ~ 150°C	4-SMD, Gull Wing	Active
ABS2U	SMC Diode Solutions	200 V	1 A	1.1 V @ 1 A	5 µA @ 200 V	-55°C ~ 150°C	4-SMD, Gull Wing	Active
DB103S	Rectron USA	200 V	1 A	1 V @ 1 A	1 µA @ 200 V	-55°C ~ 150°C	4-SMD, Gull Wing	Active
DBLS103G	Taiwan Semiconductor Corporation	200 V	1 A	1.1 V @ 1 A	2 µA @ 200 V	-55°C ~ 150°C	4-SMD, Gull Wing	Active
DBLS103GHRDG	Taiwan Semiconductor Corporation	200 V	1 A	1.1 V @ 1 A	2 µA @ 200 V	-55°C ~ 150°C	4-SMD, Gull Wing	Active
DF02S-E3/77	Vishay General Semiconductor - Diodes Division	200 V	1 A	1.1 V @ 1 A	5 µA @ 200 V	-55°C ~ 150°C	4-SMD, Gull Wing	Active
DF02S1	Fairchild Semiconductor	200 V	1 A	1.1 V @ 1 A	3 µA @ 200 V	-55°C ~ 150°C	4-SMD, Gull Wing	Active
DF02SA-E3/77	Vishay General Semiconductor - Diodes Division	200 V	1 A	1.1 V @ 1 A	5 µA @ 200 V	-55°C ~ 150°C	4-SMD, Gull Wing	Active

Engineering Selection Recommendations

Primary Recommendation: DB103S-HF DB103S-HF from Comchip Technology is the direct successor to DB103S-G, maintaining identical electrical specifications and mechanical form factor. Active product status ensures long-term availability and supply chain continuity.

Alternative Recommendations:

For Standard Applications: DF02S-E3/77 or DF02SA-E3/77 from Vishay General Semiconductor provide equivalent performance with high inventory availability (30,300 and 2,100 units respectively). Both are ROHS3 compliant with unlimited MSL rating.

For Automotive Applications: DBLS103GHRDG from Taiwan Semiconductor Corporation includes AEC-Q101 automotive qualification, suitable for automotive-grade designs requiring enhanced reliability documentation.

For Superior Leakage Performance: DB103S from Rectron USA offers the lowest reverse leakage current (1 µA @ 200 V) and lowest forward voltage (1 V @ 1 A), beneficial for low-power or precision applications.

All recommended substitutes maintain ROHS3 compliance and MSL 1 (Unlimited) rating, ensuring compatibility with standard manufacturing processes and storage requirements.

Frequently Asked Questions (FAQ)

Q: Can DB103S-HF directly replace DB103S-G without circuit modification? A: Yes. DB103S-HF maintains identical electrical ratings (200 V, 1 A), forward voltage (1.1 V @ 1 A), operating temperature range (-55°C ~ 150°C), and 4-SMD Gull Wing package. No circuit changes are required.

Q: What is the difference between DB103S-HF and ABS2-HF? A: Both parts are from Comchip Technology with identical voltage, current, and temperature specifications. The primary difference is the package designation (DBS vs. ABS) and reverse leakage current (10 µA vs. 5 µA). ABS2-HF offers lower leakage performance.

Q: Are DF02S-E3/77 and DF02SA-E3/77 interchangeable? A: Yes. Both are from Vishay General Semiconductor with identical electrical specifications. The primary difference is packaging format: DF02S-E3/77 is supplied in Cut Tape (CT) & Digi-Reel format, while DF02SA-E3/77 is supplied in Tape & Reel (TR) format.

Q: Why does DBLS103GHRDG have "GHRDG" in the part number? A: The GHRDG suffix indicates AEC-Q101 automotive qualification. This part is suitable for automotive applications requiring enhanced reliability and traceability documentation.

Q: What is the significance of reverse leakage current variation among substitutes? A: Reverse leakage current (Ir) ranges from 1 µA to 10 µA across qualified substitutes. All values are acceptable for standard rectification applications. Lower leakage (1-2 µA) is beneficial for precision or low-power circuits; higher leakage (5-10 µA) is suitable for general-purpose applications.

Q: Are all substitute parts ROHS3 compliant? A: All listed substitute parts are ROHS3 compliant. DB103S-G and ABS2U also carry ROHS3 compliance. Compliance status is consistent across the substitute group.

Q: What does MSL 1 (Unlimited) mean for component handling? A: MSL 1 (Unlimited) indicates the component has unlimited shelf life and requires no special moisture control during storage or handling. Standard warehouse conditions are acceptable.

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