DF1501ST-G Bridge Rectifier Equivalent & Substitute Parts

Part Overview

The DF1501ST-G is a single-phase bridge rectifier manufactured by Comchip Technology, rated for 100 V peak reverse voltage and 1.5 A average rectified current. This component is classified as obsolete, which necessitates identification of active equivalent and substitute parts for ongoing design requirements and procurement needs. Equivalent parts maintain identical electrical and mechanical specifications, while substitute parts satisfy the same functional requirements within allowable parameter tolerances.

Key Parameters

Parameter	Value
Diode Type	Single Phase
Technology	Standard
Voltage - Peak Reverse (Max)	100 V
Current - Average Rectified (Io)	1.5 A
Voltage - Forward (Vf) (Max) @ If	1.1 V @ 1.5 A
Current - Reverse Leakage @ Vr	10 µA @ 100 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

Substitution eligibility is determined by strict equivalence across the following critical parameters:

Diode Type: Single Phase
Technology: Standard
Voltage - Peak Reverse (Max): 100 V
Current - Average Rectified (Io): 1.5 A
Voltage - Forward (Vf) (Max) @ If: 1.1 V @ 1.5 A
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)

All identified substitute parts meet these core electrical and mechanical requirements. Variations in reverse leakage current, packaging format (Tube, Tape & Reel, Cut Tape), and product status are noted but do not preclude functional substitution.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Product Status	Voltage - Peak Reverse (Max)	Current - Average Rectified (Io)	Voltage - Forward (Vf) (Max) @ If	Current - Reverse Leakage @ Vr	Operating Temperature	Package / Case	Packaging	Inventory
DF1501ST-G	Comchip Technology	Obsolete	100 V	1.5 A	1.1 V @ 1.5 A	10 µA @ 100 V	-55°C ~ 150°C	4-SMD, Gull Wing	-	689 Pcs
DF1501S-G	Comchip Technology	Active	100 V	1.5 A	1.1 V @ 1.5 A	10 µA @ 100 V	-55°C ~ 150°C	4-SMD, Gull Wing	Tube	1116 Pcs
DB152S	SMC Diode Solutions	Active	100 V	1.5 A	1.1 V @ 1.5 A	5 µA @ 100 V	-55°C ~ 150°C	4-SMD, Gull Wing	Tape & Reel (TR)	1348 Pcs
DBLS152G RDG	Taiwan Semiconductor Corporation	Active	100 V	1.5 A	1.1 V @ 1.5 A	2 µA @ 100 V	-55°C ~ 150°C	4-SMD, Gull Wing	-	1105 Pcs
DBLS152GHRDG	Taiwan Semiconductor Corporation	Active	100 V	1.5 A	1.1 V @ 1.5 A	2 µA @ 100 V	-55°C ~ 150°C	4-SMD, Gull Wing	-	704 Pcs
DF01S	onsemi	Not For New Designs	100 V	1.5 A	1.1 V @ 1.5 A	5 µA @ 100 V	-55°C ~ 150°C	4-SMD, Gull Wing	Cut Tape (CT) & Digi-Reel®	6258 Pcs
DF1501S-E3/77	Vishay General Semiconductor - Diodes Division	Active	100 V	1.5 A	1.1 V @ 1.5 A	5 µA @ 100 V	-55°C ~ 150°C	4-SMD, Gull Wing	Tape & Reel (TR)	6700 Pcs
DFL1501S-E3/77	Vishay General Semiconductor - Diodes Division	Active	100 V	1.5 A	1.1 V @ 1.5 A	5 µA @ 100 V	-55°C ~ 150°C	4-SMD, Gull Wing	Tape & Reel (TR)	881 Pcs

Engineering Selection Recommendations

Primary Recommendation: DF1501S-G

DF1501S-G is the direct active equivalent from Comchip Technology, the original manufacturer of DF1501ST-G. This part maintains identical electrical specifications and is classified as Active, ensuring long-term availability and supply chain stability. Packaging is Tube format.

Secondary Recommendations: DF1501S-E3/77 and DFL1501S-E3/77

Both Vishay parts are Active status with identical core electrical parameters. DF1501S-E3/77 and DFL1501S-E3/77 are supplied in Tape & Reel format, suitable for automated assembly processes. These parts offer high inventory availability (6700 Pcs and 881 Pcs respectively).

Tertiary Recommendations: DB152S, DBLS152G RDG, DBLS152GHRDG

DB152S (SMC Diode Solutions) and DBLS152G RDG / DBLS152GHRDG (Taiwan Semiconductor Corporation) are parametric equivalents with identical voltage and current ratings. DBLS152GHRDG includes AEC-Q101 automotive qualification. All three are Active status. Reverse leakage current is lower than the original part (2–5 µA versus 10 µA), which represents improved performance within acceptable tolerances.

Not Recommended for New Designs: DF01S

DF01S (onsemi) is classified as Not For New Designs. While electrically equivalent, this status indicates the manufacturer does not recommend its use in new product development. Existing inventory is substantial (6258 Pcs), but alternative active parts are preferred.

Frequently Asked Questions (FAQ)

Q: Can DF1501S-G be used as a direct replacement for DF1501ST-G?

A: Yes. DF1501S-G is the active equivalent from the same manufacturer with identical electrical specifications (100 V, 1.5 A, 1.1 V forward voltage, -55°C to 150°C operating range) and the same 4-SMD Gull Wing package. The primary difference is product status (Active versus Obsolete) and packaging format (Tube versus unspecified).

Q: What is the difference between reverse leakage current values across substitute parts?

A: Reverse leakage current varies among substitutes: DF1501ST-G specifies 10 µA @ 100 V, while DB152S and DF01S specify 5 µA @ 100 V, and DBLS152G RDG and DBLS152GHRDG specify 2 µA @ 100 V. Lower leakage current indicates improved performance and does not prevent substitution. All values remain within acceptable limits for single-phase bridge rectifier applications.

Q: Are packaging format differences (Tube, Tape & Reel, Cut Tape) significant for substitution?

A: Packaging format affects procurement and assembly logistics but not electrical performance. Tube packaging is suitable for manual assembly or low-volume production. Tape & Reel and Cut Tape formats are optimized for automated pick-and-place assembly. Selection depends on production volume and assembly equipment capability.

Q: Why is DBLS152GHRDG qualified for automotive applications?

A: DBLS152GHRDG carries AEC-Q101 qualification, which is the automotive electronics council standard for discrete semiconductors. This qualification indicates the part meets automotive-grade reliability and testing requirements. Use DBLS152GHRDG only if automotive qualification is a design requirement.

Q: Can DF01S be used despite its "Not For New Designs" status?

A: DF01S meets all electrical and mechanical requirements for substitution. However, the "Not For New Designs" classification indicates the manufacturer (onsemi) does not recommend its use in new product development. For new designs, select from Active status alternatives such as DF1501S-G, DF1501S-E3/77, or DB152S.

Q: What compliance certifications apply to all substitute parts?

A: All substitute parts are ROHS3 Compliant and carry Moisture Sensitivity Level 1 (Unlimited). These certifications ensure compliance with environmental and handling requirements. REACH status varies: most parts are REACH Unaffected, while DB152S is REACH Affected. Verify REACH compliance requirements for your specific application and region.

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