DF08SA-E3/45 Bridge Rectifier Equivalent & Substitute Parts

Part Overview

The DF08SA-E3/45 is a single-phase bridge rectifier manufactured by Vishay General Semiconductor - Diodes Division, rated for 800 V peak reverse voltage and 1 A average rectified current. This component is actively produced and widely used in power supply and rectification applications requiring surface mount technology with standard silicon technology.

Substitute parts become necessary due to supply chain constraints, manufacturing discontinuation, or design optimization requirements. The parts listed below maintain electrical and mechanical compatibility within the specified parameter ranges for this product category.

Key Parameters

Parameter	Value	Unit
Voltage - Peak Reverse (Max)	800	V
Current - Average Rectified (Io)	1	A
Voltage - Forward (Vf) (Max) @ If	1.1 @ 1 A	V
Current - Reverse Leakage @ Vr	5	µA @ 800 V
Operating Temperature Range	-55 to 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 for the DF08SA-E3/45 is determined by the following critical parameters:

Voltage - Peak Reverse (Max): Must equal or exceed 800 V
Current - Average Rectified (Io): Must equal or exceed 1 A
Voltage - Forward (Vf) (Max) @ If: Must not exceed 1.1 V @ 1 A
Current - Reverse Leakage @ Vr: Must not exceed specified limits at rated voltage
Operating Temperature Range: Must encompass -55°C to 150°C minimum
Mounting Type: Surface Mount required
Package / Case: 4-SMD, Gull Wing configuration required
RoHS Status: ROHS3 Compliant required
Moisture Sensitivity Level: MSL 1 required

Substitute parts are grouped into two categories: Parametric Equivalents (matching all electrical specifications within tolerance) and Manufacturer Recommended alternatives (meeting functional requirements with potential variations in secondary parameters such as packaging format or product status).

Parameter Comparison

Part Number	Manufacturer	Vr (Max) V	Io (A)	Vf (Max) @ If (V)	Ir @ Vr (µA)	Temp Range (°C)	Product Status	Packaging
DF08SA-E3/45	Vishay	800	1	1.1 @ 1 A	5 @ 800 V	-55 to 150	Active	Tube
DF08S-E3/45	Vishay	800	1	1.1 @ 1 A	5 @ 800 V	-55 to 150	Active	Tube
DF08S-T	Diodes Incorporated	800	1	1.1 @ 1 A	10 @ 800 V	-65 to 150	Active	Tape & Reel
DF08S	onsemi	800	1.5	1.1 @ 1 A	10 @ 800 V	-55 to 150	Not For New Designs	Cut Tape & Digi-Reel
DB106S-G	Comchip Technology	800	1	1.1 @ 1 A	10 @ 800 V	-55 to 150	Obsolete	-
DI108S_T0_00001	Panjit International Inc.	800	1	1.1 @ 1 A	5 @ 800 V	-55 to 150	Active	Tube

Engineering Selection Recommendations

Primary Substitute (Parametric Equivalent): DF08S-E3/45 from Vishay is the closest parametric match to DF08SA-E3/45, with identical electrical specifications and active product status. This part is recommended for direct replacement in existing designs.

Alternative Substitute (Active Status): DF08S-T from Diodes Incorporated meets all electrical requirements with extended lower operating temperature limit (-65°C vs. -55°C) and active product status. Packaging format differs (Tape & Reel vs. Tube), requiring verification of assembly compatibility.

Secondary Substitute (Parametric Equivalent): DI108S_T0_00001 from Panjit International Inc. provides parametric equivalence with active product status and identical reverse leakage specification. Tube packaging matches the original part.

Not Recommended for New Designs: DF08S from onsemi carries "Not For New Designs" status and should be avoided in new product development. DB106S-G from Comchip Technology is obsolete and should not be selected for new applications.

Compliance Verification: All recommended substitutes maintain ROHS3 compliance, MSL 1 rating, and REACH unaffected status, ensuring regulatory and environmental compatibility with the original DF08SA-E3/45.

Frequently Asked Questions (FAQ)

Q: Can DF08S-E3/45 be used as a direct replacement for DF08SA-E3/45?

A: Yes. DF08S-E3/45 is a parametric equivalent with identical electrical specifications, operating temperature range, and packaging format. Both are manufactured by Vishay and carry active product status.

Q: What is the difference between DF08S-T and DF08SA-E3/45?

A: DF08S-T from Diodes Incorporated meets all electrical requirements but differs in packaging format (Tape & Reel vs. Tube) and extends the lower operating temperature to -65°C. Verify assembly equipment compatibility with Tape & Reel format before selection.

Q: Why is DF08S from onsemi marked "Not For New Designs"?

A: This designation indicates the manufacturer is phasing out this product line. While electrically compatible with higher current rating (1.5 A vs. 1 A), it should not be selected for new product development. Use DF08S-E3/45 or DF08S-T instead.

Q: Is DB106S-G still available for use?

A: DB106S-G is obsolete and should not be selected. Although parametrically equivalent, obsolete parts present supply chain risk and lack manufacturer support. Select from active status alternatives.

Q: What packaging formats are available for substitutes?

A: DF08SA-E3/45 and DF08S-E3/45 are supplied in Tube format. DF08S-T is supplied in Tape & Reel format. DI108S_T0_00001 is supplied in Tube format. Verify your assembly process compatibility before selecting a packaging format.

Q: Are all substitutes RoHS3 compliant?

A: Yes. All listed substitute parts maintain ROHS3 compliance, MSL 1 rating, and REACH unaffected status, ensuring full regulatory compatibility with DF08SA-E3/45.

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