DF1504S-E3/45 Equivalent & Substitute Parts

Part Overview

The DF1504S-E3/45 is a single-phase bridge rectifier manufactured by Vishay General Semiconductor - Diodes Division, rated for 400 V peak reverse voltage and 1.5 A average rectified current. This component is actively produced and RoHS3 compliant, designed for surface mount applications in 4-SMD Gull Wing packaging. Substitute parts are identified based on matching electrical ratings, mechanical compatibility, and thermal operating ranges to ensure functional equivalence in circuit 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 DF1504S-E3/45 are qualified based on the following electrical and mechanical parameters:

Voltage - Peak Reverse (Max): 400 V
Current - Average Rectified (Io): 1.5 A or lower
Voltage - Forward (Vf) (Max) @ If: 1.1 V or lower
Current - Reverse Leakage @ Vr: within acceptable range
Operating Temperature Range: compatible with application requirements
Mounting Type: Surface Mount
Package / Case: 4-SMD, Gull Wing

Parts with lower current ratings (1.0 A) are included as substitutes where circuit design permits reduced current capacity. Parts from different manufacturers are qualified when electrical specifications and package geometry remain compatible.

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
DF1504S-E3/45	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	Vishay General Semiconductor - Diodes Division	400 V	1.0 A	1.1 V @ 1 A	5 µA @ 400 V	-55°C ~ 150°C	Obsolete	RoHS Non-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
DF1504S-T	Diodes Incorporated	400 V	1.5 A	1.1 V @ 1.5 A	10 µA @ 400 V	-65°C ~ 150°C	Active	RoHS3 Compliant
DF1504ST-G	Comchip Technology	400 V	1.5 A	1.1 V @ 1.5 A	10 µA @ 400 V	-55°C ~ 150°C	Obsolete	RoHS3 Compliant

Engineering Selection Recommendations

Primary Substitutes (Active Status, RoHS3 Compliant):

DF1504S and DF1504S-T from Diodes Incorporated are direct functional equivalents with identical electrical ratings and superior reverse leakage characteristics (10 µA vs. 5 µA). Both maintain RoHS3 compliance and active product status. DF1504S-T is supplied in Tape & Reel packaging, suitable for automated assembly environments. DF1504S is supplied in Bulk packaging.

Secondary Substitutes (Reduced Current Rating):

DF04S from Vishay General Semiconductor - Diodes Division provides equivalent voltage ratings and forward voltage characteristics at 1.0 A average rectified current. This part is obsolete and RoHS non-compliant, limiting its use to legacy applications or where compliance requirements are not enforced.

Obsolete Alternatives:

DF1504ST-G from Comchip Technology maintains full electrical equivalence with RoHS3 compliance but is obsolete. Use only when primary and secondary substitutes are unavailable.

Frequently Asked Questions (FAQ)

Q: Can DF04S replace DF1504S-E3/45 in all applications?

A: DF04S is electrically compatible for circuits designed for 1.0 A or lower average rectified current. The 400 V peak reverse voltage and forward voltage characteristics are identical. However, DF04S is obsolete and RoHS non-compliant, making it unsuitable for new designs or applications requiring regulatory compliance.

Q: What is the difference between DF1504S and DF1504S-T?

A: Both parts are manufactured by Diodes Incorporated with identical electrical specifications. The primary difference is packaging: DF1504S is supplied in Bulk, while DF1504S-T is supplied in Tape & Reel format. Selection depends on assembly process requirements.

Q: Are Diodes Incorporated parts compatible with Vishay parts in this application?

A: Yes. DF1504S and DF1504S-T from Diodes Incorporated are functionally equivalent to DF1504S-E3/45 from Vishay. All three parts share identical voltage ratings, current ratings, forward voltage characteristics, and 4-SMD Gull Wing packaging. Reverse leakage specifications differ slightly (10 µA vs. 5 µA), which is within acceptable tolerance for most applications.

Q: Why is DF1504ST-G listed as obsolete?

A: DF1504ST-G from Comchip Technology is marked obsolete by the manufacturer. While electrically equivalent and RoHS3 compliant, availability is limited. Use active alternatives (DF1504S or DF1504S-T) for new designs.

Q: Can I use DF1504S-E3/45 in place of DF04S?

A: Yes. DF1504S-E3/45 is rated for 1.5 A, exceeding DF04S specifications of 1.0 A. This provides additional current capacity margin and improved reliability in applications originally designed for DF04S.

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