DF06S/77 Bridge Rectifier Equivalent & Substitute Parts

Part Overview

The DF06S/77 is a single-phase bridge rectifier diode manufactured by Vishay General Semiconductor - Diodes Division, rated for 600 V peak reverse voltage and 1 A average rectified current. This part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement. The DF06S/77 features a 4-SMD Gull Wing package (DFS) suitable for surface mount applications across industrial and consumer electronics. Substitute parts must maintain electrical equivalence across voltage, current, and thermal specifications while meeting modern compliance requirements.

Key Parameters

Parameter	DF06S/77 Specification
Voltage - Peak Reverse (Max)	600 V
Current - Average Rectified (Io)	1 A
Voltage - Forward (Vf) (Max) @ If	1.1 V @ 1 A
Current - Reverse Leakage @ Vr	5 µA @ 600 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
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitute parts for the DF06S/77 are categorized based on strict electrical and mechanical parameter alignment:

MFR Recommended Substitutes (Vishay): Parts DF06S-E3/45, DF06S-E3/77, and DF06SA-E3/77 maintain identical electrical specifications (600 V, 1 A, 1.1 V forward voltage, 5 µA reverse leakage) and package configuration (4-SMD Gull Wing). These parts differ only in packaging format (Tube or Tape & Reel) and product status (Active vs. Obsolete). All three are RoHS3 compliant, addressing regulatory requirements absent in the original part.

Cross-Manufacturer Equivalents: Parts DF06S-T (Diodes Incorporated), DF06S (Fairchild Semiconductor), MDB6S (onsemi), and ABS6-HF (Comchip Technology) provide electrical equivalence with identical or superior specifications. These maintain 600 V peak reverse voltage, 1 A average rectified current, and compatible package geometry. Reverse leakage specifications vary slightly (5–10 µA range) but remain within acceptable limits for single-phase bridge rectifier applications.

Parametric Equivalents with Current Uprating: Part DF1506S-G (Comchip Technology) provides 1.5 A average rectified current while maintaining 600 V peak reverse voltage and identical forward voltage characteristics. This part is suitable for applications requiring higher current capacity within the same voltage class.

Lower Voltage Alternative: Part DF02S (onsemi) operates at 200 V peak reverse voltage with 1.5 A current rating. This part is applicable only to circuits designed for lower voltage operation and is not recommended as a direct substitute for 600 V applications.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Voltage - Peak Reverse (Max)	Current - Average Rectified (Io)	Voltage - Forward (Vf) (Max) @ If	Current - Reverse Leakage @ Vr	Operating Temperature	Package / Case	Product Status	RoHS Status
DF06S/77	Vishay	600 V	1 A	1.1 V @ 1 A	5 µA @ 600 V	-55°C ~ 150°C	4-SMD, Gull Wing	Obsolete	Non-compliant
DF06S-E3/45	Vishay	600 V	1 A	1.1 V @ 1 A	5 µA @ 600 V	-55°C ~ 150°C	4-SMD, Gull Wing	Active	RoHS3 Compliant
DF06S-E3/77	Vishay	600 V	1 A	1.1 V @ 1 A	5 µA @ 600 V	-55°C ~ 150°C	4-SMD, Gull Wing	Active	RoHS3 Compliant
DF06SA-E3/77	Vishay	600 V	1 A	1.1 V @ 1 A	5 µA @ 600 V	-55°C ~ 150°C	4-SMD, Gull Wing	Active	RoHS3 Compliant
DF06S-T	Diodes Incorporated	600 V	1 A	1.1 V @ 1 A	10 µA @ 600 V	-65°C ~ 150°C	4-SMD, Gull Wing	Active	RoHS3 Compliant
DF06S	Fairchild Semiconductor	600 V	1 A	1.1 V @ 1 A	10 µA @ 600 V	-65°C ~ 150°C	4-SMD, Gull Wing	Active	Not specified
MDB6S	onsemi	600 V	1 A	1.1 V @ 1 A	10 µA @ 600 V	-55°C ~ 150°C	4-SMD, Gull Wing	Not For New Designs	RoHS3 Compliant
ABS6-HF	Comchip Technology	600 V	1 A	1.1 V @ 1 A	5 µA @ 1000 V	-55°C ~ 150°C	4-SMD, Gull Wing	Active	RoHS3 Compliant
DF1506S-G	Comchip Technology	600 V	1.5 A	1.1 V @ 1.5 A	10 µA @ 600 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

Engineering Selection Recommendations

Primary Recommendation: DF06S-E3/77 (Vishay) is the preferred substitute. It maintains complete electrical and mechanical equivalence to the DF06S/77 while offering Active product status and RoHS3 compliance. This part is available in Tape & Reel packaging with the highest inventory (75,023 units), ensuring supply continuity.

Alternative from Same Manufacturer: DF06S-E3/45 (Vishay) provides identical electrical specifications and RoHS3 compliance with Tube packaging. Selection between DF06S-E3/45 and DF06S-E3/77 depends on packaging requirements for assembly processes.

Cross-Manufacturer Alternatives: DF06S-T (Diodes Incorporated) and DF06S (Fairchild Semiconductor) are electrically equivalent with Active product status. These parts feature slightly higher reverse leakage (10 µA vs. 5 µA) and extended lower operating temperature (-65°C vs. -55°C), making them suitable for demanding thermal environments. RoHS3 compliance is confirmed for DF06S-T; compliance status for Fairchild DF06S is not specified.

Current-Uprated Option: DF1506S-G (Comchip Technology) accommodates applications requiring 1.5 A average rectified current while maintaining 600 V peak reverse voltage. This part is suitable only when higher current capacity is required; it is not a direct substitute for 1 A applications.

Not Recommended: MDB6S (onsemi) carries "Not For New Designs" status, limiting its use to legacy system maintenance. DF02S (onsemi) operates at 200 V and is unsuitable for 600 V circuit requirements.

Frequently Asked Questions (FAQ)

Q: Can DF06S-E3/77 directly replace DF06S/77 without circuit modification?

A: Yes. DF06S-E3/77 maintains identical electrical specifications (600 V peak reverse voltage, 1 A average rectified current, 1.1 V forward voltage) and package geometry (4-SMD Gull Wing). No circuit redesign is required. The primary difference is product status (Active vs. Obsolete) and RoHS3 compliance.

Q: What is the difference between DF06S-E3/45 and DF06S-E3/77?

A: Both parts are electrically identical. The difference is packaging format: DF06S-E3/45 is supplied in Tube packaging, while DF06S-E3/77 is supplied in Tape & Reel. Selection depends on assembly line requirements and inventory management practices.

Q: Can DF1506S-G replace DF06S/77 in a 1 A application?

A: DF1506S-G is electrically compatible but rated for 1.5 A average rectified current. It can be used in 1 A applications as a higher-capacity alternative. However, it is not a direct substitute unless current uprating is required or desired for design margin.

Q: Are there compliance differences between substitute options?

A: Yes. DF06S/77 is RoHS non-compliant. All recommended substitutes (DF06S-E3/45, DF06S-E3/77, DF06SA-E3/77, DF06S-T, ABS6-HF, DF1506S-G) are RoHS3 compliant. Fairchild DF06S compliance status is not specified in available data. For applications requiring RoHS certification, select from the compliant options.

Q: What is the significance of reverse leakage current differences (5 µA vs. 10 µA)?

A: Reverse leakage current affects standby power consumption and high-voltage blocking performance. The DF06S/77 and its closest equivalents (DF06S-E3 series, ABS6-HF) specify 5 µA leakage. Cross-manufacturer alternatives (DF06S-T, MDB6S, DF1506S-G) specify 10 µA. Both values are acceptable for standard single-phase bridge rectifier applications; selection depends on circuit sensitivity to leakage current.

Q: Is DF06S from Fairchild Semiconductor a recommended substitute?

A: DF06S (Fairchild) is electrically equivalent with Active product status and extended lower operating temperature (-65°C). However, RoHS compliance status is not specified. If RoHS certification is required, select DF06S-T (Diodes Incorporated) or Vishay alternatives instead.

Q: Why is MDB6S marked "Not For New Designs"?

A: MDB6S carries "Not For New Designs" status, indicating the manufacturer is discontinuing this product line. While electrically equivalent, it should be used only for legacy system maintenance or repair. For new designs, select from Active-status alternatives.

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