DF02S/77 Bridge Rectifier Equivalent & Substitute Parts

Part Overview

The DF02S/77 is a single-phase bridge rectifier manufactured by Vishay General Semiconductor - Diodes Division, rated for 200 V peak reverse voltage and 1 A average rectified current. This part is classified as obsolete and no longer recommended for new designs. Due to its obsolete status, equivalent and substitute parts from active product lines are necessary for ongoing production support and new design implementations. Substitute parts maintain electrical and mechanical compatibility while offering improved availability and compliance status.

Key Parameters

Parameter	Value
Voltage - Peak Reverse (Max)	200 V
Current - Average Rectified (Io)	1 A
Voltage - Forward (Vf) (Max) @ If	1.1 V @ 1 A
Current - Reverse Leakage @ Vr	5 µA @ 200 V
Operating Temperature Range	-55°C ~ 150°C (TJ)
Mounting Type	Surface Mount
Package / Case	4-SMD, Gull Wing
Diode Type	Single Phase
Technology	Standard

Substitute Part Grouping Explanation

Substitute parts for the DF02S/77 are classified into two categories based on electrical and mechanical compatibility:

Category 1: Parametric Equivalents (Identical Electrical Specifications) These parts maintain all critical electrical parameters: 200 V peak reverse voltage, 1 A average rectified current, 1.1 V forward voltage drop at 1 A, 5 µA reverse leakage at 200 V, and -55°C to 150°C operating temperature range. All parts feature 4-SMD Gull Wing surface mount packaging. Substitutes in this category differ only in packaging format (Tube, Cut Tape & Digi-Reel, or Tape & Reel) and product status (Active vs. Obsolete).

Category 2: Parametric Equivalents with Increased Current Rating The DF1502S-G (Comchip Technology) maintains the same voltage specifications and operating temperature range but offers 1.5 A average rectified current capacity, providing higher current headroom while remaining pin-compatible and mechanically identical.

Category 3: Parametric Equivalents with Alternative Package Designations Parts such as ABS2-HF and ABS2U maintain identical electrical specifications but use alternative supplier device package designations (ABS vs. DFS). These remain mechanically and electrically compatible within the 4-SMD Gull Wing form factor.

Category 4: Cross-Manufacturer Equivalents DB103S and DB103S-HF provide parametric equivalence with minor variations in reverse leakage current (1 µA to 10 µA at 200 V) while maintaining all other critical specifications.

Parameter Comparison

Part Number	Manufacturer	Vr (Max)	Io (A)	Vf (Max) @ If	Ir @ Vr	Temp Range	Package	Status	RoHS
DF02S/77	Vishay	200 V	1 A	1.1 V @ 1 A	5 µA @ 200 V	-55°C ~ 150°C	4-SMD, Gull Wing	Obsolete	Non-compliant
DF02S-E3/45	Vishay	200 V	1 A	1.1 V @ 1 A	5 µA @ 200 V	-55°C ~ 150°C	4-SMD, Gull Wing	Active	ROHS3 Compliant
DF02S-E3/77	Vishay	200 V	1 A	1.1 V @ 1 A	5 µA @ 200 V	-55°C ~ 150°C	4-SMD, Gull Wing	Active	ROHS3 Compliant
DF02SA-E3/77	Vishay	200 V	1 A	1.1 V @ 1 A	5 µA @ 200 V	-55°C ~ 150°C	4-SMD, Gull Wing	Active	ROHS3 Compliant
DF02S	onsemi	200 V	1.5 A	1.1 V @ 1.5 A	10 µA @ 200 V	-55°C ~ 150°C	4-SMD, Gull Wing	Not For New Designs	ROHS3 Compliant
DF1502S-G	Comchip Technology	200 V	1.5 A	1.1 V @ 1.5 A	10 µA @ 200 V	-55°C ~ 150°C	4-SMD, Gull Wing	Active	ROHS3 Compliant
ABS2-HF	Comchip Technology	200 V	1 A	1.1 V @ 1 A	5 µA @ 200 V	-55°C ~ 150°C	4-SMD, Gull Wing	Active	ROHS3 Compliant
ABS2U	SMC Diode Solutions	200 V	1 A	1.1 V @ 1 A	5 µA @ 200 V	-55°C ~ 150°C	4-SMD, Gull Wing	Active	ROHS3 Compliant
DB103S	Rectron USA	200 V	1 A	1 V @ 1 A	1 µA @ 200 V	-55°C ~ 150°C	4-SMD, Gull Wing	Active	ROHS3 Compliant
DB103S-HF	Comchip Technology	200 V	1 A	1.1 V @ 1 A	10 µA @ 200 V	-55°C ~ 150°C	4-SMD, Gull Wing	Active	ROHS3 Compliant

Engineering Selection Recommendations

Primary Recommendation: DF02S-E3/77 (Vishay) This part is the direct parametric equivalent from the original manufacturer. It maintains identical electrical specifications, operates across the same temperature range, and features the same 4-SMD Gull Wing package. The part is Active status and ROHS3 compliant, making it suitable for new designs and production continuity. Inventory availability is 30,300 units.

Secondary Recommendation: DF02S-E3/45 (Vishay) Identical to DF02S-E3/77 in all electrical and mechanical parameters. The difference is packaging format (Tube vs. Cut Tape & Digi-Reel). Select this variant if your procurement process requires tube packaging. Inventory: 3,480 units.

Alternative for Higher Current Applications: DF1502S-G (Comchip Technology) When circuit design permits higher current capacity, this part offers 1.5 A average rectified current while maintaining all voltage specifications and operating temperature range. It is Active status and ROHS3 compliant. Use this substitute only if your application can accommodate the increased current rating without thermal or design modifications.

Cross-Manufacturer Alternatives: ABS2-HF, ABS2U, DB103S These parts provide parametric equivalence with identical 200 V / 1 A specifications and -55°C to 150°C operating range. All are Active status and ROHS3 compliant. DB103S offers superior reverse leakage performance (1 µA vs. 5 µA). Select these alternatives based on supplier availability, lead time, or cost considerations when primary recommendations are unavailable.

Not Recommended for New Designs: DF02S (onsemi) Although electrically compatible with higher current capacity, this part carries "Not For New Designs" status and should be used only for legacy system maintenance or repair applications.

Frequently Asked Questions (FAQ)

Q: Can I use DF02S-E3/77 as a direct replacement for DF02S/77? A: Yes. DF02S-E3/77 is a parametric equivalent with identical electrical specifications (200 V, 1 A, 1.1 V forward drop, 5 µA reverse leakage) and the same 4-SMD Gull Wing surface mount package. The only differences are product status (Active vs. Obsolete) and RoHS compliance (ROHS3 vs. non-compliant).

Q: What is the difference between DF02S-E3/45 and DF02S-E3/77? A: Both parts are electrically and mechanically identical. The difference is packaging format: DF02S-E3/45 is supplied in Tube packaging, while DF02S-E3/77 is supplied in Cut Tape & Digi-Reel format. Select based on your procurement and assembly requirements.

Q: Can I substitute DF1502S-G for DF02S/77? A: DF1502S-G is electrically compatible but rated for 1.5 A average rectified current versus 1 A for the original part. It maintains the same 200 V voltage rating and operating temperature range. Use this substitute only if your circuit design can accommodate the higher current rating without requiring design modifications.

Q: Are all substitute parts RoHS compliant? A: All recommended substitute parts are ROHS3 compliant. The original DF02S/77 is RoHS non-compliant. If RoHS compliance is a requirement for your application, select from the Active status alternatives listed.

Q: What is the difference between DB103S and DB103S-HF? A: DB103S (Rectron USA) offers superior reverse leakage performance at 1 µA @ 200 V. DB103S-HF (Comchip Technology) has 10 µA reverse leakage. Both maintain identical voltage and current ratings. Select DB103S if low reverse leakage is critical for your application.

Q: Can I use ABS2-HF or ABS2U interchangeably with DF02S-E3/77? A: Yes. Both ABS2-HF and ABS2U maintain identical electrical specifications (200 V, 1 A, 1.1 V forward drop, 5 µA reverse leakage) and the same 4-SMD Gull Wing package. They differ only in supplier device package designation (ABS vs. DFS) and packaging format. All three are mechanically and electrically interchangeable.

Q: Why is the onsemi DF02S marked "Not For New Designs"? A: The onsemi DF02S carries this status indicating it is in the mature or end-of-life phase of its product lifecycle. While it remains available and functional, it should not be selected for new circuit designs. Use Active status alternatives such as DF02S-E3/77 or DF1502S-G for new applications.

Q: What packaging options are available for the DF02S/77 equivalent? A: Substitute parts are available in three packaging formats: Tube (DF02S-E3/45), Cut Tape & Digi-Reel (DF02S-E3/77), and Tape & Reel (DF02SA-E3/77, ABS2U). All maintain the same 4-SMD Gull Wing component form factor. Select based on your assembly process requirements.

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