DF08SP-HF Equivalent & Substitute Parts

Part Overview

The DF08SP-HF is a single-phase bridge rectifier diode manufactured by Comchip Technology, rated for 800 V peak reverse voltage and 1 A average rectified current. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing production and maintenance applications. The DF08SP-HF operates across a temperature range of -55°C to 150°C and is packaged in a 4-SMD, Gull Wing surface mount configuration. Substitute parts must maintain electrical and mechanical compatibility while meeting the same functional requirements.

Key Parameters

Parameter	Value	Unit
Diode Type	Single Phase	—
Technology	Standard	—
Voltage - Peak Reverse (Max)	800	V
Current - Average Rectified (Io)	1	A
Voltage - Forward (Vf) (Max) @ If	1.1	V @ 1 A
Operating Temperature Range	-55 to 150	°C (TJ)
Mounting Type	Surface Mount	—
Package / Case	4-SMD, Gull Wing	—

Substitute Part Grouping Explanation

Substitute parts for the DF08SP-HF are qualified based on the following electrical and mechanical parameters:

Critical Matching Parameters:

Voltage - Peak Reverse (Max): 800 V
Current - Average Rectified (Io): 1 A
Voltage - Forward (Vf) (Max) @ If: 1.1 V @ 1 A
Operating Temperature Range: -55°C to 150°C
Mounting Type: Surface Mount
Package / Case: 4-SMD, Gull Wing
Diode Type: Single Phase
Technology: Standard

All substitute parts listed maintain these core electrical specifications. Variations in Current - Reverse Leakage @ Vr (ranging from 2 µA to 10 µA @ 800 V) are within acceptable tolerance for this product category and do not affect functional substitution. Supplier device packages may differ (DFS, DBS, DBLS, 4-SDIP) while maintaining mechanical compatibility in the 4-SMD, Gull Wing form factor.

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	Mounting Type
DF08SP-HF	Comchip Technology	Obsolete	800 V	1 A	1.1 V @ 1 A	10 µA @ 800 V	-55°C ~ 150°C	4-SMD, Gull Wing	Surface Mount
DF08S-HF	Comchip Technology	Active	800 V	1 A	1.1 V @ 1 A	10 µA @ 800 V	-55°C ~ 150°C	4-SMD, Gull Wing	Surface Mount
DB106S-G	Comchip Technology	Obsolete	800 V	1 A	1.1 V @ 1 A	10 µA @ 800 V	-55°C ~ 150°C	4-SMD, Gull Wing	Surface Mount
DB106S-HF	Comchip Technology	Active	800 V	1 A	1.1 V @ 1 A	10 µA @ 800 V	-55°C ~ 150°C	4-SMD, Gull Wing	Surface Mount
DBLS106G C1G	Taiwan Semiconductor Corporation	Active	800 V	1 A	1.1 V @ 1 A	2 µA @ 800 V	-55°C ~ 150°C	4-SMD, Gull Wing	Surface Mount
DBLS106GHC1G	Taiwan Semiconductor Corporation	Active	800 V	1 A	1.1 V @ 1 A	2 µA @ 800 V	-55°C ~ 150°C	4-SMD, Gull Wing	Surface Mount
DF08S-E3/45	Vishay General Semiconductor - Diodes Division	Active	800 V	1 A	1.1 V @ 1 A	5 µA @ 800 V	-55°C ~ 150°C	4-SMD, Gull Wing	Surface Mount
DF08SA-E3/45	Vishay General Semiconductor - Diodes Division	Active	800 V	1 A	1.1 V @ 1 A	5 µA @ 800 V	-55°C ~ 150°C	4-SMD, Gull Wing	Surface Mount
DI108S_T0_00001	Panjit International Inc.	Active	800 V	1 A	1.1 V @ 1 A	5 µA @ 800 V	-55°C ~ 150°C	4-SMD, Gull Wing	Surface Mount

Engineering Selection Recommendations

Primary Recommendation: DF08S-HF

The DF08S-HF is the manufacturer-recommended substitute for the obsolete DF08SP-HF. Both parts are manufactured by Comchip Technology and share identical electrical specifications. The DF08S-HF carries Active product status, ensuring long-term availability and supply chain continuity. This part is the direct functional equivalent with no design modifications required.

Secondary Recommendations: DB106S-HF

The DB106S-HF is an active Comchip Technology product with identical electrical parameters to the DF08SP-HF. The primary difference is the supplier device package designation (DBS versus DFS), which does not affect mechanical or electrical compatibility in the 4-SMD, Gull Wing form factor.

Alternative Recommendations: Vishay DF08S-E3/45 and DF08SA-E3/45

Both Vishay parts maintain all critical electrical specifications and are actively produced. These parts feature lower reverse leakage current (5 µA @ 800 V versus 10 µA @ 800 V), representing improved performance characteristics. Both carry RoHS3 compliance and REACH unaffected status.

Alternative Recommendations: Panjit DI108S_T0_00001

The Panjit part meets all electrical requirements with 5 µA reverse leakage current. This part is actively produced and carries RoHS3 compliance and REACH unaffected status.

Alternative Recommendations: Taiwan Semiconductor DBLS106G C1G and DBLS106GHC1G

Both Taiwan Semiconductor parts maintain all critical electrical specifications with improved reverse leakage characteristics (2 µA @ 800 V). The DBLS106GHC1G carries automotive-grade qualification (AEC-Q101) and is suitable for applications requiring automotive-level reliability. Both parts are actively produced with RoHS3 compliance.

Frequently Asked Questions (FAQ)

Q: Can the DF08SP-HF be directly replaced with the DF08S-HF?

A: Yes. The DF08S-HF is the manufacturer-recommended substitute with identical electrical specifications and the same 4-SMD, Gull Wing surface mount package. No circuit modifications are required.

Q: What is the difference between the DFS and DBS supplier device packages?

A: Both DFS and DBS packages maintain the same 4-SMD, Gull Wing mechanical form factor and electrical specifications. The package designation refers to internal supplier coding and does not affect PCB layout or functionality.

Q: Are the Vishay DF08S-E3/45 and DF08SA-E3/45 parts interchangeable with the DF08SP-HF?

A: Yes. Both Vishay parts meet all critical electrical specifications and maintain the same 4-SMD, Gull Wing surface mount configuration. The lower reverse leakage current (5 µA versus 10 µA) represents improved performance and does not affect compatibility.

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

A: The DBLS106G C1G and DBLS106GHC1G feature 2 µA reverse leakage current compared to 10 µA in the original DF08SP-HF. This represents improved leakage characteristics and may provide enhanced performance in applications sensitive to reverse leakage. All parts remain functionally compatible.

Q: Is the DBLS106GHC1G suitable for automotive applications?

A: Yes. The DBLS106GHC1G carries automotive-grade qualification (AEC-Q101) and is suitable for automotive applications requiring this certification level. The standard DBLS106G C1G is not automotive-qualified.

Q: Do all substitute parts carry RoHS3 compliance?

A: The Comchip Technology DF08SP-HF and DF08S-HF do not list RoHS status in the provided specifications. The Comchip DB106S-G and DB106S-HF, all Vishay parts, the Panjit part, and both Taiwan Semiconductor parts carry RoHS3 compliance.

Q: What is the moisture sensitivity level (MSL) for these parts?

A: Parts with specified MSL ratings carry MSL 1 (Unlimited), indicating no moisture sensitivity restrictions. The Comchip DF08SP-HF and DF08S-HF do not list MSL specifications.

Q: Can these parts be used in high-temperature applications?

A: Yes. All substitute parts maintain the operating temperature range of -55°C to 150°C (TJ), supporting high-temperature applications within this specification.

Q: Are all substitute parts available in tube packaging?

A: The Vishay DF08S-E3/45, DF08SA-E3/45, Panjit DI108S_T0_00001, and Taiwan Semiconductor parts are specified with tube packaging. Comchip parts do not list specific packaging format in the provided specifications.

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