DB102S-G Bridge Rectifier Equivalent & Substitute Parts

Part Overview

The DB102S-G is a single-phase bridge rectifier diode manufactured by Comchip Technology, rated for 100 V peak reverse voltage and 1 A average rectified current in a 4-SMD surface mount package. The product status is obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement.

Key Parameters

Parameter	Value
Diode Type	Single Phase
Technology	Standard
Voltage - Peak Reverse (Max)	100 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 DB102S-G are grouped based on strict electrical and mechanical parameter matching:

Primary Substitution Criteria:

Voltage - Peak Reverse (Max): 100 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
Diode Type: Single Phase
Technology: Standard

Substitute Categories:

MFR Recommended Substitute: DB102S-HF (Comchip Technology) - Active product status with identical electrical specifications and package configuration.

Parametric Equivalents: ABS1-HF, DB102S, DBLS102G, DBLS102GHRDG, DF01S-E3/77, DF01S1, and DF01SA-E3/77 meet all core electrical and mechanical parameters. Variations in reverse leakage current (2-10 µA @ 100 V) and forward voltage measurement conditions remain within functional equivalence for this rectifier category.

Parameter Comparison

Part Number	Manufacturer	Product Status	Voltage - Peak Reverse (Max)	Current - Average Rectified (Io)	Voltage - Forward (Vf) (Max) @ If	Current - Reverse Leakage @ Vr	Operating Temperature	Package / Case	RoHS Status
DB102S-G	Comchip Technology	Obsolete	100 V	1 A	1.1 V @ 1 A	10 µA @ 100 V	-55°C ~ 150°C	4-SMD, Gull Wing	ROHS3 Compliant
DB102S-HF	Comchip Technology	Active	100 V	1 A	1.1 V @ 1 A	10 µA @ 100 V	-55°C ~ 150°C	4-SMD, Gull Wing	Not specified
ABS1-HF	Comchip Technology	Active	100 V	1 A	1.1 V @ 1 A	5 µA @ 100 V	-55°C ~ 150°C	4-SMD, Gull Wing	ROHS3 Compliant
DB102S	SMC Diode Solutions	Active	100 V	1 A	1.1 V @ 1 A	5 µA @ 100 V	-55°C ~ 150°C	4-SMD, Gull Wing	ROHS3 Compliant
DBLS102G	Taiwan Semiconductor Corporation	Active	100 V	1 A	1.1 V @ 15 A	2 µA @ 100 V	-55°C ~ 150°C	4-SMD, Gull Wing	ROHS3 Compliant
DBLS102GHRDG	Taiwan Semiconductor Corporation	Active	100 V	1 A	1.1 V @ 1 A	2 µA @ 100 V	-55°C ~ 150°C	4-SMD, Gull Wing	ROHS3 Compliant
DF01S-E3/77	Vishay General Semiconductor - Diodes Division	Active	100 V	1 A	1.1 V @ 1 A	5 µA @ 100 V	-55°C ~ 150°C	4-SMD, Gull Wing	ROHS3 Compliant
DF01S1	Fairchild Semiconductor	Active	100 V	1 A	1.1 V @ 1 A	3 µA @ 100 V	-55°C ~ 150°C	4-SMD, Gull Wing	Not specified
DF01SA-E3/77	Vishay General Semiconductor - Diodes Division	Active	100 V	1 A	1.1 V @ 1 A	5 µA @ 100 V	-55°C ~ 150°C	4-SMD, Gull Wing	ROHS3 Compliant

Engineering Selection Recommendations

Immediate Replacement: DB102S-HF (Comchip Technology) is the manufacturer-recommended substitute with active product status and identical electrical and mechanical specifications.

Primary Alternatives: DB102S (SMC Diode Solutions), DF01S-E3/77 (Vishay), and DF01SA-E3/77 (Vishay) are active products with ROHS3 compliance and full parameter compatibility. These parts are suitable for direct substitution in new designs and production.

Automotive-Grade Option: DBLS102GHRDG (Taiwan Semiconductor Corporation) is qualified to AEC-Q101 and carries automotive-grade designation, appropriate for applications requiring automotive qualification.

High-Inventory Alternatives: DF01S-E3/77 (10,200 pcs), DBLS102G (6,400 pcs), and DB102S (5,300 pcs) offer substantial stock availability for procurement planning.

Frequently Asked Questions (FAQ)

Q: Can DB102S-HF directly replace DB102S-G? A: Yes. DB102S-HF is the manufacturer-recommended substitute with identical electrical ratings (100 V, 1 A), forward voltage (1.1 V @ 1 A), operating temperature range (-55°C ~ 150°C), and 4-SMD Gull Wing package configuration.

Q: What is the difference between DBLS102G and DBLS102GHRDG? A: Both are Taiwan Semiconductor Corporation products with identical electrical parameters and 4-SMD Gull Wing packaging. DBLS102GHRDG includes automotive-grade qualification (AEC-Q101) and carries a Grade designation. The forward voltage measurement condition differs (1.1 V @ 15 A vs. 1.1 V @ 1 A), but both meet the 1.1 V @ 1 A specification of the original part.

Q: Are all substitute parts RoHS3 compliant? A: DB102S-HF, DF01S1, and DF01SA-E3/77 do not specify RoHS status in the provided data. ABS1-HF, DB102S, DBLS102G, DBLS102GHRDG, and DF01S-E3/77 are confirmed ROHS3 compliant.

Q: What is the significance of reverse leakage current variations? A: Reverse leakage current ranges from 2 µA to 10 µA @ 100 V across substitute parts. All values remain within acceptable limits for single-phase bridge rectifier applications at the specified voltage and temperature ratings.

Q: Which substitute offers the best stock availability? A: DF01S-E3/77 (Vishay) has the highest inventory at 10,200 pcs, followed by DBLS102G (6,400 pcs) and DB102S (5,300 pcs).

Q: Can I use DF01S1 in production if RoHS status is not specified? A: DF01S1 is an active product from Fairchild Semiconductor with full electrical and mechanical parameter compatibility. RoHS compliance verification should be confirmed with the manufacturer or distributor before production use if RoHS certification is a design requirement.

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