DFB2005 Bridge Rectifier Equivalent & Substitute Parts

Part Overview

The DFB2005 is a single-phase bridge rectifier manufactured by onsemi, rated for 50 V peak reverse voltage and 20 A average rectified current in a through-hole TS-6P package. This component is classified as Last Time Buy, indicating end-of-life status. Alternative equivalent and substitute parts are necessary for ongoing production requirements and long-term design continuity.

Key Parameters

Parameter	Value
Diode Type	Single Phase
Technology	Standard
Voltage - Peak Reverse (Max)	50 V
Current - Average Rectified (Io)	20 A
Voltage - Forward (Vf) (Max) @ If	1.1 V @ 20 A
Current - Reverse Leakage @ Vr	10 µA @ 50 V
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 DFB2005 is determined by the following criteria:

Primary Matching Parameters:

Voltage - Peak Reverse (Max): 50 V (exact match required)
Current - Average Rectified (Io): 20 A (exact match or higher rating acceptable)
Diode Type: Single Phase (exact match required)
Technology: Standard (exact match required)
Mounting Type: Through Hole (exact match required)
RoHS Status: ROHS3 Compliant (exact match required)

Secondary Compatibility Factors:

Operating Temperature Range: -55°C to 150°C minimum
Forward Voltage (Vf): 1.1 V @ 20 A or lower
Reverse Leakage Current: 10 µA @ 50 V or lower
Package compatibility: TS-6P or GBJ package formats

Substitute parts are grouped into two categories: direct parametric equivalents (identical electrical and mechanical specifications) and functional substitutes (meeting or exceeding all critical parameters within acceptable tolerances).

Parameter Comparison

Part Number	Manufacturer	Voltage (V)	Current (A)	Vf @ If (V)	Ir @ Vr (µA)	Temp Range (°C)	Package	Status
DFB2005	onsemi	50	20	1.1 @ 20	10 @ 50	-55 ~ 150	TS-6P	Last Time Buy
TS20P01G	Taiwan Semiconductor Corporation	50	20	1.1 @ 20	10 @ 50	-55 ~ 150	TS-6P	Active
TS20P01GH	Taiwan Semiconductor Corporation	50	20	1.1 @ 20	10 @ 50	-55 ~ 150	TS-6P	Active
GBJ20005	SMC Diode Solutions	50	20	1.1 @ 20	5 @ 50	-55 ~ 150	GBJ	Active
GBJ25005-BP	Micro Commercial Co	50	25	1.05 @ 12.5	10 @ 50	-55 ~ 150	GBJ	Not For New Designs
GBJ25005-F	Diodes Incorporated	50	25	1.05 @ 12.5	10 @ 50	-65 ~ 150	GBJ	Active
GBJ25005-G	Comchip Technology	50	25	1 @ 12.5	10 @ 50	-55 ~ 150	GBJ	Active
GBJ15005-F	Diodes Incorporated	50	15	1.05 @ 7.5	10 @ 50	-65 ~ 150	GBJ	Active
GBJ10005-BP	Micro Commercial Co	50	10	1.05 @ 5	10 @ 50	-55 ~ 150	GBJ	Not For New Designs
GBJ8005-F	Diodes Incorporated	50	8	1 @ 4	5 @ 50	-65 ~ 150	GBJ	Active
GBJ6005-F	Diodes Incorporated	50	6	1 @ 3	5 @ 50	-65 ~ 150	GBJ	Active

Engineering Selection Recommendations

Direct Parametric Equivalents (Recommended Primary Alternatives):

TS20P01G and TS20P01GH from Taiwan Semiconductor Corporation are direct parametric equivalents to the DFB2005. Both maintain identical electrical specifications (50 V, 20 A, 1.1 V forward voltage) and the same TS-6P package format. Both are in Active product status, ensuring long-term availability. TS20P01GH includes AEC-Q101 automotive qualification, suitable for applications requiring automotive-grade reliability.

Functional Substitutes with Higher Current Rating:

GBJ25005-F (Diodes Incorporated), GBJ25005-G (Comchip Technology), and GBJ25005-BP (Micro Commercial Co) are rated for 25 A, exceeding the DFB2005's 20 A specification. All three maintain 50 V peak reverse voltage and ROHS3 compliance. GBJ25005-F and GBJ25005-G are in Active status. These parts use the GBJ package format instead of TS-6P, requiring PCB layout verification for mechanical fit.

Functional Substitutes with Matched Current Rating:

GBJ20005 (SMC Diode Solutions) matches the DFB2005 at 20 A and 50 V with improved reverse leakage characteristics (5 µA vs. 10 µA). Active product status ensures availability. GBJ package format requires mechanical compatibility verification.

Lower Current Rating Alternatives:

GBJ15005-F, GBJ10005-BP, GBJ8005-F, and GBJ6005-F are suitable only for applications where the 20 A requirement can be reduced. These parts maintain 50 V voltage rating and ROHS3 compliance but are not recommended as direct replacements for 20 A load conditions.

Obsolescence Considerations:

Parts marked "Not For New Designs" (GBJ10005-BP, GBJ25005-BP) should not be selected for new product development despite current inventory availability.

Frequently Asked Questions (FAQ)

Q: Can I use GBJ25005-F as a direct replacement for DFB2005?

A: GBJ25005-F is functionally compatible. It meets or exceeds all critical electrical parameters (50 V, 25 A rating, 1.05 V forward voltage, ROHS3 compliant). However, the package format differs (GBJ vs. TS-6P), requiring PCB layout verification to confirm mechanical fit and pin compatibility.

Q: What is the difference between TS20P01G and TS20P01GH?

A: Both are parametric equivalents to DFB2005 with identical electrical specifications. TS20P01GH includes AEC-Q101 automotive qualification and is suitable for automotive applications. TS20P01G is the standard industrial version. Both use the same TS-6P package.

Q: Why are some substitute parts rated for higher current (25 A) than the DFB2005 (20 A)?

A: Higher current ratings indicate greater thermal and electrical capacity. A 25 A rated part can safely handle 20 A loads with additional margin. This is acceptable for substitution provided all other parameters (voltage, package, compliance) are compatible.

Q: Can I use GBJ15005-F if my application only requires 15 A?

A: GBJ15005-F is suitable only if your application's actual current requirement is 15 A or lower. It is not a substitute for the DFB2005 in 20 A applications. Verify actual load current before selecting a lower-rated part.

Q: What does "Last Time Buy" status mean for DFB2005?

A: Last Time Buy indicates the manufacturer has discontinued the part and will not produce additional units beyond a final order window. Existing inventory is limited. Transition to an Active status alternative (TS20P01G, TS20P01GH, or GBJ25005-F) is necessary for long-term supply security.

Q: Are all substitute parts ROHS3 compliant?

A: All listed substitute parts are ROHS3 compliant, matching the DFB2005 compliance status. This ensures compatibility with environmental and regulatory requirements.

Q: Does package format affect electrical performance?

A: Package format (TS-6P vs. GBJ) does not affect electrical performance. Both are 4-SIP through-hole packages with identical pin configurations for bridge rectifier applications. Package selection is determined by PCB layout and mechanical space constraints.

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