DF04S Bridge Rectifier Single Phase 400V 1.5A Equivalent & Substitute Parts

Part Overview

The DF04S is a single-phase bridge rectifier diode rated for 400V peak reverse voltage and 1.5A average rectified current in a 4-SDIP surface mount package. This component is classified as "Not For New Designs" by the original manufacturer (onsemi), indicating it has been superseded in the product lifecycle. Finding equivalent and substitute parts is necessary to ensure design continuity, maintain supply chain flexibility, and identify components with active product status for new applications.

Key Parameters

Parameter	Value
Diode Type	Single Phase Bridge Rectifier
Voltage - Peak Reverse (Max)	400 V
Current - Average Rectified (Io)	1.5 A
Voltage - Forward (Vf) (Max) @ If	1.1 V @ 1.5 A
Current - Reverse Leakage @ Vr	5 µA @ 400 V
Operating Temperature Range	-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 DF04S are grouped based on the following criteria:

Primary Substitution Criteria:

Voltage - Peak Reverse (Max): 400 V (exact match required for voltage rating)
Current - Average Rectified (Io): 1.5 A (exact match required for current rating)
Diode Type: Single Phase Bridge Rectifier (functional equivalence)
Mounting Type: Surface Mount (mechanical compatibility)
Package / Case: 4-SMD, Gull Wing (physical compatibility)

Direct Equivalents maintain all electrical and mechanical parameters identical to the DF04S, differing only in manufacturer or packaging variant.

Functional Alternatives are parts from different manufacturers with identical voltage and current ratings but may have minor variations in forward voltage characteristics or reverse leakage specifications within acceptable engineering tolerances.

Parameter Comparison

Part Number	Manufacturer	Voltage - Peak Reverse (Max)	Current - Average Rectified (Io)	Voltage - Forward (Vf) (Max) @ If	Current - Reverse Leakage @ Vr	Operating Temperature	Product Status	RoHS Status
DF04S	onsemi	400 V	1.5 A	1.1 V @ 1.5 A	5 µA @ 400 V	-55°C ~ 150°C	Not For New Designs	ROHS3 Compliant
DF04S-E3/45	Vishay General Semiconductor - Diodes Division	400 V	1 A	1.1 V @ 1 A	5 µA @ 400 V	-55°C ~ 150°C	Active	ROHS3 Compliant
DF1504S-E3/77	Vishay General Semiconductor - Diodes Division	400 V	1.5 A	1.1 V @ 1.5 A	5 µA @ 400 V	-55°C ~ 150°C	Active	ROHS3 Compliant
DF04S-T	Diodes Incorporated	400 V	1 A	1.1 V @ 1 A	10 µA @ 400 V	-65°C ~ 150°C	Active	ROHS3 Compliant
DF1504S	Diodes Incorporated	400 V	1.5 A	1.1 V @ 1.5 A	10 µA @ 400 V	-65°C ~ 150°C	Active	ROHS3 Compliant

Engineering Selection Recommendations

For Direct Replacement (1.5A Current Rating): DF1504S-E3/77 (Vishay) and DF1504S (Diodes Incorporated) are the preferred substitutes. Both maintain the 1.5A current rating and 400V voltage specification of the original DF04S. DF1504S-E3/77 carries Active product status and is available in Tape & Reel packaging. DF1504S is also Active and available in Bulk packaging. Both are ROHS3 compliant.

For Current-Reduced Applications (1A Current Rating): DF04S-E3/45 (Vishay) and DF04S-T (Diodes Incorporated) are suitable where the application can operate at 1A instead of 1.5A. DF04S-E3/45 maintains identical electrical characteristics to the original DF04S except for current rating. DF04S-T is Active with extended temperature range (-65°C to 150°C) and slightly higher reverse leakage (10 µA vs. 5 µA).

Compliance Considerations: All recommended substitutes are ROHS3 compliant. The original DF04S is marked "Not For New Designs," making Active-status alternatives essential for new product development. DF1504S-E3/77 and DF1504S both carry Active status, making them the most suitable for forward-looking designs.

Frequently Asked Questions (FAQ)

Q: Can DF04S-T be used as a direct replacement for DF04S? A: DF04S-T is electrically compatible at the 400V voltage rating but is rated for 1A average rectified current versus the DF04S 1.5A rating. It is suitable only if your application does not exceed 1A. DF04S-T is manufactured by Diodes Incorporated and carries Active product status.

Q: What is the difference between DF1504S-E3/77 and DF1504S? A: Both parts maintain 400V and 1.5A ratings. DF1504S-E3/77 is manufactured by Vishay and supplied in Tape & Reel packaging. DF1504S is manufactured by Diodes Incorporated and supplied in Bulk packaging. Electrical specifications are identical. Selection depends on packaging and supply chain requirements.

Q: Why is the DF04S marked "Not For New Designs"? A: This designation indicates the part has been superseded in the manufacturer's product lifecycle. For new designs, select from Active-status alternatives such as DF1504S-E3/77 or DF1504S to ensure long-term availability and manufacturer support.

Q: Are all substitute parts in the same 4-SDIP package? A: Yes. All listed substitutes use the 4-SMD, Gull Wing package configuration, ensuring mechanical and thermal compatibility with the original DF04S footprint.

Q: What is the temperature operating range difference between DF04S and DF04S-T? A: The original DF04S operates from -55°C to 150°C. DF04S-T extends the lower limit to -65°C, providing a wider operating temperature range suitable for more demanding thermal environments.

Q: Are all substitutes ROHS3 compliant? A: Yes. All recommended substitute parts carry ROHS3 compliance certification, meeting environmental and regulatory requirements equivalent to the original DF04S.

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