DFB2540 Bridge Rectifier Equivalent & Substitute Parts

Part Overview

The DFB2540 is a single-phase bridge rectifier manufactured by onsemi, rated for 400 V peak reverse voltage and 25 A average rectified current. This component is classified as Last Time Buy, indicating discontinued production. Finding equivalent and substitute parts is necessary to ensure design continuity and maintain supply chain reliability for applications requiring single-phase bridge rectification at 400 V / 25 A specifications.

Key Parameters

Parameter	Value
Diode Type	Single Phase
Technology	Standard
Voltage - Peak Reverse (Max)	400 V
Current - Average Rectified (Io)	25 A
Voltage - Forward (Vf) (Max) @ If	1.1 V @ 25 A
Current - Reverse Leakage @ Vr	10 µA @ 400 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 DFB2540 is determined by the following critical parameters:

Voltage - Peak Reverse (Max): 400 V
Current - Average Rectified (Io): 25 A
Diode Type: Single Phase
Technology: Standard
Operating Temperature Range: -55°C ~ 150°C (TJ)
Mounting Type: Through Hole
RoHS Status: ROHS3 Compliant

Parts meeting all these criteria are classified as parametric equivalents. Parts with identical electrical ratings but different package types or forward voltage specifications at different current levels are classified as similar substitutes with package or thermal considerations.

Parameter Comparison

Parameter	DFB2540 (onsemi)	TS25P04G D2G (TSC)	TS25P04G (TSC)	TS25P04GH (TSC)	GBJ2504 (SMC)
Diode Type	Single Phase	Single Phase	Single Phase	Single Phase	Single Phase
Technology	Standard	Standard	Standard	Standard	Standard
Voltage - Peak Reverse (Max)	400 V	400 V	400 V	400 V	400 V
Current - Average Rectified (Io)	25 A	25 A	25 A	25 A	25 A
Voltage - Forward (Vf) (Max) @ If	1.1 V @ 25 A	1.1 V @ 25 A	1.1 V @ 25 A	1.1 V @ 25 A	1.1 V @ 12.5 A
Current - Reverse Leakage @ Vr	10 µA @ 400 V	10 µA @ 400 V	10 µA @ 400 V	10 µA @ 400 V	10 µA @ 400 V
Operating Temperature Range	-55°C ~ 150°C	-55°C ~ 150°C	-55°C ~ 150°C	-55°C ~ 150°C	-55°C ~ 150°C
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole
Package / Case	4-SIP, TS-6P	4-SIP, TS-6P	4-SIP, TS-6P	4-SIP, TS-6P	4-ESIP, GBJ
Product Status	Last Time Buy	Active	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Grade	Standard	Standard	Standard	Automotive	Standard
Qualification	—	—	—	AEC-Q101	—

Engineering Selection Recommendations

Preferred Parametric Equivalents (Active Status, Identical Package):

TS25P04G D2G, TS25P04G, and TS25P04GH from Taiwan Semiconductor Corporation are direct parametric equivalents with active product status. All three maintain the TS-6P package configuration, identical electrical ratings at the specified current levels, and ROHS3 compliance. TS25P04GH carries automotive-grade qualification (AEC-Q101), suitable for applications requiring automotive-level reliability.

Alternative Substitute (Different Package):

GBJ2504 from SMC Diode Solutions meets all core electrical requirements (400 V, 25 A, -55°C ~ 150°C, ROHS3 compliant) but uses a 4-ESIP GBJ package instead of TS-6P. Forward voltage specification differs at 1.1 V @ 12.5 A rather than @ 25 A. This part is suitable for applications where package footprint flexibility is acceptable and thermal management accommodates the different package geometry.

Frequently Asked Questions (FAQ)

Q: Can TS25P04G D2G, TS25P04G, and TS25P04GH be used interchangeably with DFB2540?

A: Yes. All three Taiwan Semiconductor Corporation parts are parametric equivalents meeting identical electrical specifications: 400 V peak reverse voltage, 25 A average rectified current, 1.1 V forward voltage @ 25 A, and TS-6P package configuration. PCB layout and thermal design remain unchanged.

Q: What is the difference between TS25P04GH and TS25P04G?

A: TS25P04GH carries automotive-grade qualification (AEC-Q101) and is designated for automotive applications. TS25P04G is standard-grade. Both share identical electrical parameters and TS-6P packaging. Selection depends on application requirements for automotive qualification.

Q: Can GBJ2504 replace DFB2540 directly?

A: GBJ2504 is electrically compatible for 400 V / 25 A applications but uses a different package (4-ESIP GBJ vs. TS-6P). PCB layout modification is required. Forward voltage is specified at 12.5 A rather than 25 A. Verify thermal performance and mechanical fit before implementation.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. DFB2540 and all listed substitutes (TS25P04G D2G, TS25P04G, TS25P04GH, GBJ2504) are ROHS3 compliant.

Q: Why is DFB2540 marked as Last Time Buy?

A: Last Time Buy status indicates onsemi has discontinued production. Active alternatives from Taiwan Semiconductor Corporation (TS25P04 series) and SMC Diode Solutions (GBJ2504) ensure continued supply availability for 400 V / 25 A single-phase bridge rectifier applications.

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