DF04 Bridge Rectifier Equivalent & Substitute Parts

Part Overview

The DF04 is a single-phase bridge rectifier manufactured by SMC Diode Solutions, rated for 400V peak reverse voltage and 1A average rectified current. This component is designed for through-hole mounting applications requiring standard bridge rectification in the 400V class. The DF04 maintains Active product status with full RoHS3 compliance and unlimited moisture sensitivity rating.

Substitute parts are identified when electrical parameters, mechanical dimensions, and mounting characteristics align within the specified tolerances for this diode category. Equivalent alternatives enable design flexibility, supply chain optimization, and continuity of production when primary components face availability constraints.

Substiute Parts

DF04

SMC Diode SolutionsIn Stock: 7105DF04 Datasheet

Current PartRFQ

DB104-BP

Micro Commercial CoIn Stock: 7539DB104-BP Datasheet

Parametric EquivalentRFQ

DF04-G

Comchip TechnologyIn Stock: 1397DF04-G Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the DF04 bridge rectifier is determined by strict equivalence across the following critical parameters:

Electrical Equivalence Criteria:

• Voltage - Peak Reverse (Max): 400 V
• Current - Average Rectified (Io): 1 A
• Diode Type: Single Phase
• Technology: Standard
• Operating Temperature Range: -55°C to 150°C (TJ)

Mechanical Equivalence Criteria:

• Mounting Type: Through Hole
• Package / Case: 4-EDIP (0.321", 8.15mm)

Compliance Criteria:

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

Substitute parts DB104-BP and DF04-G satisfy all electrical and mechanical requirements. Both components operate within identical voltage and current specifications, support the same temperature range, and utilize compatible through-hole mounting in the 4-EDIP package form factor. Variations in reverse leakage current (5 µA for DF04 versus 10 µA for substitutes) remain within acceptable operational margins for standard bridge rectifier applications.

Parameter Comparison

Engineering Selection Recommendations

Primary Selection: DF04 (SMC Diode Solutions)

The DF04 maintains Active product status with full design support and ongoing manufacturing commitment. This component is the preferred choice for new designs and applications requiring long-term supply assurance. Current inventory of 7079 pieces supports immediate procurement requirements.

Secondary Selection: DF04-G (Comchip Technology)

The DF04-G provides an Active-status alternative with equivalent electrical and mechanical specifications. This substitute is suitable for applications where SMC Diode Solutions DF04 availability is constrained. Inventory of 1329 pieces is available. The DF04-G maintains identical voltage, current, and temperature ratings with compatible 4-EDIP through-hole packaging.

Tertiary Selection: DB104-BP (Micro Commercial Co)

The DB104-BP is electrically and mechanically equivalent but carries Not For New Designs product status. This substitute is restricted to legacy system maintenance, repair, and replacement applications only. The DB104-BP is not suitable for new product development or designs entering production. Inventory of 7488 pieces is available for existing system support.

All three components satisfy RoHS3 compliance and MSL 1 (Unlimited) moisture sensitivity requirements. Selection between DF04 and DF04-G is determined by availability and supply chain strategy. DB104-BP use is limited to non-new-design applications.

Frequently Asked Questions (FAQ)

Q: Can DF04-G replace DF04 in new product designs?

A: Yes. The DF04-G (Comchip Technology) is electrically and mechanically equivalent to the DF04 (SMC Diode Solutions). Both components maintain Active product status, identical 400V/1A ratings, and compatible 4-EDIP through-hole packaging. Selection between these two parts is based on availability and supply chain preference.

Q: What is the difference in reverse leakage current between DF04 and its substitutes?

A: The DF04 specifies 5 µA reverse leakage at 400V, while DB104-BP and DF04-G specify 10 µA at 400V. Both values are within standard operating margins for single-phase bridge rectifier applications. The forward voltage drop (1.1V @ 1A) remains identical across all three parts.

Q: Is DB104-BP suitable for new product development?

A: No. The DB104-BP carries Not For New Designs product status and is restricted to legacy system maintenance and repair applications only. For new designs, use DF04 or DF04-G.

Q: Are all three parts compatible with the same PCB footprint?

A: Yes. All three components use the 4-EDIP (0.321", 8.15mm) package with through-hole mounting. PCB layouts designed for DF04 accommodate DB104-BP and DF04-G without modification.

Q: Do all substitutes meet RoHS3 compliance?

A: Yes. DF04, DB104-BP, and DF04-G are all RoHS3 Compliant with MSL 1 (Unlimited) moisture sensitivity rating.

Q: What is the operating temperature range for these bridge rectifiers?

A: All three components operate across -55°C to 150°C junction temperature (TJ), supporting industrial and commercial temperature environments.

Q: Can these parts be used interchangeably in existing assemblies?

A: Yes, provided the existing assembly uses the 4-EDIP through-hole package. Electrical performance is equivalent across all three parts for standard bridge rectification applications rated at 400V and 1A.