DFB20100 Bridge Rectifier Equivalent & Substitute Parts

Part Overview

The DFB20100 is a single-phase bridge rectifier manufactured by onsemi, rated for 1 kV peak reverse voltage and 20 A average rectified current. This component is classified as "Not For New Designs," indicating it has reached end-of-life status. Finding equivalent or substitute parts is necessary for maintenance, repair, and legacy system support where the original part is no longer readily available or when design flexibility permits component selection from active product lines.

Key Parameters

Parameter	Value
Diode Type	Single Phase
Technology	Standard
Voltage - Peak Reverse (Max)	1 kV
Current - Average Rectified (Io)	20 A
Voltage - Forward (Vf) (Max) @ If	1.1 V @ 20 A
Operating Temperature Range	-55°C ~ 150°C (TJ)
Mounting Type	Through Hole
Package / Case	4-SIP, TS-6P
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the DFB20100 is determined by the following critical parameters:

Voltage Rating: Peak reverse voltage must be ≥ 1 kV
Current Rating: Average rectified current must be ≥ 20 A
Diode Type: Single phase bridge rectifier configuration
Technology: Standard rectifier technology
Operating Temperature: Must support -55°C ~ 150°C range
Mounting Type: Through hole configuration
Compliance: ROHS3 compliance required

The GBJ2010 meets all substitution criteria with identical voltage and current ratings. The GBJ3510-BP exceeds current requirements (35 A vs. 20 A) but remains compatible as a higher-capacity alternative within the same voltage class and package family.

Parameter Comparison

Parameter	DFB20100 (Main)	GBJ2010 (Substitute)	GBJ3510-BP (Substitute)
Manufacturer	onsemi	SMC Diode Solutions	Micro Commercial Co
Diode Type	Single Phase	Single Phase	Single Phase
Technology	Standard	Standard	Standard
Voltage - Peak Reverse (Max)	1 kV	1 kV	1 kV
Current - Average Rectified (Io)	20 A	20 A	35 A
Voltage - Forward (Vf) (Max) @ If	1.1 V @ 20 A	1.1 V @ 20 A	1.05 V @ 17.5 A
Current - Reverse Leakage @ Vr	10 µA @ 50 V	5 µA @ 1000 V	10 µA @ 1000 V
Operating Temperature	-55°C ~ 150°C (TJ)	-55°C ~ 150°C (TJ)	-55°C ~ 150°C (TJ)
Mounting Type	Through Hole	Through Hole	Through Hole
Package / Case	4-SIP, TS-6P	4-ESIP, GBJ	4-SIP, GBJ
Product Status	Not For New Designs	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

GBJ2010 is the direct functional equivalent to the DFB20100. Both parts share identical voltage and current ratings, forward voltage characteristics, and operating temperature range. The GBJ2010 carries active product status from SMC Diode Solutions, ensuring long-term availability and supply chain stability. This part is recommended for direct replacement in legacy system maintenance where pin-compatible packaging is available.

GBJ3510-BP provides a higher current capacity (35 A) while maintaining the same 1 kV voltage rating and operating temperature specifications. This part is suitable for applications where the DFB20100 is used but additional current margin is desired or where system redesign permits the use of a higher-rated component. The GBJ3510-BP is manufactured by Micro Commercial Co and maintains active product status with ROHS3 compliance.

Both substitute parts are ROHS3 compliant and suitable for applications requiring environmental and regulatory compliance. Package form factor differences (TS-6P vs. GBJ) must be verified against PCB layout and mechanical constraints before final selection.

Frequently Asked Questions (FAQ)

Q: Can the GBJ2010 be used as a direct replacement for the DFB20100?

A: Yes. The GBJ2010 meets all electrical specifications of the DFB20100, including 1 kV voltage rating, 20 A current rating, and -55°C ~ 150°C operating temperature range. Package form factor compatibility must be confirmed for your specific application.

Q: What is the advantage of using the GBJ3510-BP over the GBJ2010?

A: The GBJ3510-BP provides 35 A average rectified current capacity compared to 20 A in both the DFB20100 and GBJ2010. This higher rating offers additional design margin and thermal headroom in applications where current demand approaches the component rating.

Q: Are there package compatibility concerns between these parts?

A: Yes. The DFB20100 uses TS-6P packaging, while GBJ2010 uses 4-ESIP and GBJ3510-BP uses GBJ packaging. Physical dimensions and pin configurations differ. PCB layout and mechanical mounting must be verified before substitution.

Q: Why is the DFB20100 marked "Not For New Designs"?

A: This designation indicates the part has reached end-of-life status at onsemi. New designs should specify active products such as GBJ2010 or GBJ3510-BP to ensure long-term supply availability and manufacturing support.

Q: Do all three parts meet RoHS compliance requirements?

A: Yes. The DFB20100, GBJ2010, and GBJ3510-BP are all ROHS3 compliant, meeting environmental and regulatory standards for electronic component manufacturing and use.

Q: What is the difference in reverse leakage current between these parts?

A: The DFB20100 specifies 10 µA @ 50 V, GBJ2010 specifies 5 µA @ 1000 V, and GBJ3510-BP specifies 10 µA @ 1000 V. Leakage measurements are taken at different voltage levels, making direct comparison dependent on your specific operating conditions.

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