DB102S Bridge Rectifier Equivalent & Substitute Parts

Part Overview

The DB102S is a single-phase bridge rectifier diode manufactured by SMC Diode Solutions, rated for 100 V peak reverse voltage and 1 A average rectified current. This component is designed for surface mount applications in 4-SMD, Gull Wing packaging. The part is currently active in production with RoHS3 compliance and unlimited moisture sensitivity level (MSL 1).

Equivalent and substitute parts are identified when they maintain identical electrical performance specifications and compatible mechanical packaging, enabling direct replacement in circuit designs without functional degradation.

Key Parameters

Parameter	Value
Diode Type	Single Phase
Voltage - Peak Reverse (Max)	100 V
Current - Average Rectified (Io)	1 A
Voltage - Forward (Vf) (Max) @ If	1.1 V @ 1 A
Current - Reverse Leakage @ Vr	5 µA @ 100 V
Operating Temperature Range	-55°C ~ 150°C (TJ)
Mounting Type	Surface Mount
Package / Case	4-SMD, Gull Wing
RoHS Status	RoHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitute parts for the DB102S are qualified based on the following electrical and mechanical parameters:

Diode Type: Single Phase bridge rectifier configuration
Voltage - Peak Reverse (Max): 100 V minimum rating
Current - Average Rectified (Io): 1 A minimum rating
Voltage - Forward (Vf) (Max) @ If: 1.1 V @ 1 A maximum
Current - Reverse Leakage @ Vr: 5 µA @ 100 V maximum
Operating Temperature Range: -55°C ~ 150°C (TJ)
Mounting Type: Surface Mount
Package / Case: 4-SMD, Gull Wing configuration
Product Status: Active

All identified substitutes meet or exceed these specifications and maintain compatibility with the original design requirements.

Parameter Comparison

Parameter	DB102S (SMC)	DF01SA-E3/77 (Vishay)	DF01S1 (Fairchild)	DF01S-E3/77 (Vishay)
Diode Type	Single Phase	Single Phase	Single Phase	Single Phase
Voltage - Peak Reverse (Max)	100 V	100 V	100 V	100 V
Current - Average Rectified (Io)	1 A	1 A	1 A	1 A
Voltage - Forward (Vf) (Max) @ If	1.1 V @ 1 A	1.1 V @ 1 A	1.1 V @ 1 A	1.1 V @ 1 A
Current - Reverse Leakage @ Vr	5 µA @ 100 V	5 µA @ 100 V	3 µA @ 100 V	5 µA @ 100 V
Operating Temperature Range	-55°C ~ 150°C (TJ)	-55°C ~ 150°C (TJ)	-55°C ~ 150°C (TJ)	-55°C ~ 150°C (TJ)
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Package / Case	4-SMD, Gull Wing	4-SMD, Gull Wing	4-SMD, Gull Wing	4-SMD, Gull Wing
RoHS Status	RoHS3 Compliant	RoHS3 Compliant	Not specified	RoHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	Not specified	1 (Unlimited)

Engineering Selection Recommendations

All three substitute parts maintain active product status and meet the electrical specifications of the DB102S. Selection between substitutes should be based on the following factors:

DF01SA-E3/77 and DF01S-E3/77 (Vishay General Semiconductor - Diodes Division) are both RoHS3 compliant with MSL 1 rating, matching the compliance profile of the original DB102S. DF01SA-E3/77 is supplied in Tape & Reel packaging, while DF01S-E3/77 is supplied in Cut Tape & Digi-Reel format.

DF01S1 (Fairchild Semiconductor) demonstrates superior reverse leakage performance at 3 µA @ 100 V compared to the 5 µA specification of the DB102S, providing additional design margin. This part is supplied in Bulk packaging. Compliance certifications for this part are not specified in the available data.

Frequently Asked Questions (FAQ)

Q: Can DF01SA-E3/77 be used as a direct replacement for DB102S?

A: Yes. DF01SA-E3/77 meets all electrical parameters of the DB102S and maintains identical 4-SMD, Gull Wing surface mount packaging. Both parts are RoHS3 compliant with MSL 1 rating. The primary difference is packaging format: DF01SA-E3/77 is supplied in Tape & Reel, while DB102S is also available in Tape & Reel.

Q: What is the difference between DF01S-E3/77 and DF01SA-E3/77?

A: Both parts are manufactured by Vishay and share identical electrical specifications and 4-SMD, Gull Wing packaging. The difference is in supply packaging: DF01SA-E3/77 uses Tape & Reel format, while DF01S-E3/77 uses Cut Tape & Digi-Reel format. Electrical performance and mechanical compatibility are equivalent.

Q: Why does DF01S1 show lower reverse leakage current?

A: DF01S1 specifies 3 µA @ 100 V reverse leakage compared to 5 µA for the DB102S. This represents superior leakage performance and provides additional design margin. The part remains fully compatible with DB102S circuit requirements.

Q: Are all substitutes suitable for high-temperature applications?

A: Yes. All substitute parts maintain the -55°C ~ 150°C (TJ) operating temperature range of the DB102S, ensuring compatibility in thermal environments.

Q: What packaging considerations apply when selecting a substitute?

A: All substitute parts use 4-SMD, Gull Wing surface mount packaging, matching the DB102S mechanical footprint. Packaging format differences (Tape & Reel, Cut Tape, Bulk) affect supply and handling but do not impact electrical or mechanical compatibility on the circuit board.

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