DF06SP-HF Bridge Rectifier Equivalent & Substitute Parts

Part Overview

The DF06SP-HF is a single-phase bridge rectifier diode manufactured by Comchip Technology, rated for 600 V peak reverse voltage and 1 A average rectified current. This component is classified as obsolete, necessitating identification of equivalent and substitute parts for ongoing design support and procurement continuity. Bridge rectifiers in this voltage and current class are used in power supply circuits, battery charging systems, and AC-to-DC conversion applications requiring surface mount packaging.

Key Parameters

Parameter	Value
Diode Type	Single Phase
Technology	Standard
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	10 µA @ 600 V
Operating Temperature Range	-55°C ~ 150°C (TJ)
Mounting Type	Surface Mount
Package / Case	4-SMD, Gull Wing

Substitute Part Grouping Explanation

Substitution of the DF06SP-HF is determined by electrical and mechanical parameter equivalence. All substitute parts must maintain the following core specifications:

Single-phase bridge rectifier topology
600 V peak reverse voltage rating
1 A average rectified current capacity
1.1 V maximum forward voltage at 1 A
Surface mount 4-SMD gull wing package configuration
Operating temperature range of -55°C to 150°C

Substitute parts are grouped into two categories: direct manufacturer equivalents from Comchip Technology and parametric equivalents from alternative manufacturers (Vishay General Semiconductor, Fairchild Semiconductor, and Taiwan Semiconductor Corporation). All listed substitutes meet the electrical specifications required for direct circuit replacement. Variations in reverse leakage current (ranging from 2 µA to 10 µA at 600 V) and supplier device package designations do not preclude functional equivalence in standard applications.

Parameter Comparison

Part Number	Manufacturer	Product Status	Vr (Max)	Io	Vf (Max) @ If	Ir @ Vr	Temp Range	Package	Inventory
DF06SP-HF	Comchip Technology	Obsolete	600 V	1 A	1.1 V @ 1 A	10 µA @ 600 V	-55°C ~ 150°C	4-SMD, Gull Wing	1088 Pcs
DF06S-HF	Comchip Technology	Active	600 V	1 A	1.1 V @ 1 A	10 µA @ 600 V	-55°C ~ 150°C	4-SMD, Gull Wing	995 Pcs
DB105S-G	Comchip Technology	Obsolete	600 V	1 A	1.1 V @ 1 A	10 µA @ 600 V	-55°C ~ 150°C	4-SMD, Gull Wing	1081 Pcs
DB105S-HF	Comchip Technology	Active	600 V	1 A	1.1 V @ 1 A	10 µA @ 600 V	-55°C ~ 150°C	4-SMD, Gull Wing	808 Pcs
DF06S-G	Comchip Technology	Obsolete	600 V	1 A	1.1 V @ 1 A	10 µA @ 600 V	-55°C ~ 150°C	4-SMD, Gull Wing	1140 Pcs
DBLS105G C1G	Taiwan Semiconductor Corporation	Active	600 V	1 A	1.1 V @ 1 A	2 µA @ 600 V	-55°C ~ 150°C	4-SMD, Gull Wing	632 Pcs
DBLS105GHC1G	Taiwan Semiconductor Corporation	Active	600 V	1 A	1.1 V @ 1 A	2 µA @ 600 V	-55°C ~ 150°C	4-SMD, Gull Wing	676 Pcs
DF06S	Fairchild Semiconductor	Active	600 V	1 A	1.1 V @ 1 A	10 µA @ 600 V	-65°C ~ 150°C	4-SMD, Gull Wing	38560 Pcs
DF06S-E3/45	Vishay General Semiconductor - Diodes Division	Active	600 V	1 A	1.1 V @ 1 A	5 µA @ 600 V	-55°C ~ 150°C	4-SMD, Gull Wing	4130 Pcs
DF06SA-E3/45	Vishay General Semiconductor - Diodes Division	Active	600 V	1 A	1.1 V @ 1 A	5 µA @ 600 V	-55°C ~ 150°C	4-SMD, Gull Wing	1037 Pcs

Engineering Selection Recommendations

Primary Recommendation: DF06S-HF (Comchip Technology)

The DF06S-HF is the manufacturer-recommended direct substitute for the obsolete DF06SP-HF. Both parts are manufactured by Comchip Technology and share identical electrical specifications and package configuration. The DF06S-HF maintains active product status, ensuring long-term availability and supply chain continuity. This part is the preferred choice for direct replacement in existing designs.

Secondary Recommendations: DB105S-HF (Comchip Technology)

The DB105S-HF provides an alternative from the same manufacturer with active product status. While utilizing a different supplier device package designation (DBS versus DFS), it maintains electrical equivalence and 4-SMD gull wing surface mount compatibility. This option is suitable when DF06S-HF availability is constrained.

Alternative Recommendations: Vishay General Semiconductor Parts

The DF06S-E3/45 and DF06SA-E3/45 from Vishay General Semiconductor - Diodes Division are parametric equivalents with active product status and high inventory availability (4130 Pcs and 1037 Pcs respectively). These parts feature reduced reverse leakage current (5 µA at 600 V compared to 10 µA), which may provide performance benefits in low-leakage applications. Both are ROHS3 compliant and carry REACH unaffected status.

Alternative Recommendations: Taiwan Semiconductor Corporation Parts

The DBLS105G C1G and DBLS105GHC1G from Taiwan Semiconductor Corporation are parametric equivalents with active product status. These parts feature superior reverse leakage characteristics (2 µA at 600 V). The DBLS105GHC1G carries automotive-grade qualification (AEC-Q101), making it suitable for automotive and high-reliability applications. Both parts are ROHS3 compliant with unlimited moisture sensitivity level (MSL 1).

Alternative Recommendation: Fairchild Semiconductor DF06S

The Fairchild Semiconductor DF06S is a parametric equivalent with the highest inventory availability (38560 Pcs). This part features an extended lower operating temperature limit (-65°C versus -55°C), providing enhanced performance in extreme cold environments. Active product status and widespread availability make this a viable long-term alternative.

Frequently Asked Questions (FAQ)

Q: Can DF06S-HF be used as a direct replacement for DF06SP-HF?

A: Yes. The DF06S-HF is the manufacturer-recommended substitute. Both parts are manufactured by Comchip Technology and share identical electrical specifications (600 V, 1 A, 1.1 V forward voltage) and 4-SMD gull wing surface mount packaging. The primary difference is product status: DF06SP-HF is obsolete while DF06S-HF is active.

Q: What is the difference between Comchip Technology parts with DFS and DBS package designations?

A: DFS and DBS are supplier device package designations that refer to different internal package configurations within the 4-SMD gull wing form factor. Both designations are compatible with the same PCB footprint and mounting process. Electrical specifications remain identical across these designations.

Q: Are Taiwan Semiconductor Corporation parts (DBLS105G C1G and DBLS105GHC1G) compatible with the DF06SP-HF footprint?

A: Yes. Both Taiwan Semiconductor Corporation parts utilize the same 4-SMD gull wing package configuration and are electrically equivalent. The DBLS105GHC1G includes automotive-grade qualification (AEC-Q101) and is suitable for applications requiring higher reliability standards.

Q: What is the significance of the lower reverse leakage current in Vishay and Taiwan Semiconductor parts?

A: Reverse leakage current specifications vary among substitutes: DF06SP-HF and most Comchip parts specify 10 µA at 600 V, Vishay parts specify 5 µA, and Taiwan Semiconductor parts specify 2 µA. Lower reverse leakage current reduces power dissipation and heat generation in the rectifier, which may be beneficial in thermally constrained applications or designs requiring minimal standby current.

Q: Can the Fairchild Semiconductor DF06S be used in place of the DF06SP-HF?

A: Yes. The Fairchild DF06S is a parametric equivalent with identical electrical specifications and 4-SMD gull wing packaging. An additional advantage is the extended lower operating temperature limit (-65°C versus -55°C), providing enhanced performance in extreme cold environments. This part has the highest inventory availability among all substitutes.

Q: Are all substitute parts ROHS3 compliant?

A: ROHS3 compliance is confirmed for Comchip Technology DF06S-G, DB105S-G, Vishay General Semiconductor DF06S-E3/45 and DF06SA-E3/45, and Taiwan Semiconductor Corporation DBLS105G C1G and DBLS105GHC1G. The original DF06SP-HF and Fairchild Semiconductor DF06S do not list ROHS3 status in the provided specifications.

Q: What is the difference between DBLS105GHC1G and DBLS105G C1G?

A: The DBLS105GHC1G includes automotive-grade qualification (AEC-Q101) and is designated for automotive applications. Both parts share identical electrical specifications and reverse leakage characteristics (2 µA at 600 V). The DBLS105GHC1G is the appropriate choice for automotive and high-reliability applications.

Q: Which substitute offers the best long-term availability?

A: The Fairchild Semiconductor DF06S offers the highest inventory availability (38560 Pcs) and active product status, making it the most suitable choice for applications requiring long-term supply assurance. The Vishay DF06S-E3/45 (4130 Pcs) and Comchip DF06S-HF (995 Pcs) are also viable options with active status.

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