Equivalent & Substitute Parts for S07B-GS18

Part Overview

The S07B-GS18 is a general-purpose rectifier diode manufactured by Vishay General Semiconductor - Diodes Division, rated for 100V DC reverse voltage and 700mA average rectified current in a surface mount DO-219AB package. This part is classified as Active and carries AEC-Q101 automotive qualification. Substitute parts are identified when equivalent electrical performance and mechanical compatibility are required due to inventory constraints, manufacturing discontinuation, or design flexibility needs.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	100	V
Current - Average Rectified (Io)	700	mA
Voltage - Forward (Vf) (Max) @ If	1.1 @ 1 A	V
Reverse Recovery Time (trr)	1.8	µs
Current - Reverse Leakage @ Vr	10	µA @ 100 V
Package / Case	DO-219AB	SMF
Mounting Type	Surface Mount	-
Operating Temperature - Junction	-55 to 150	°C
RoHS Status	ROHS3 Compliant	-
AEC-Q101 Qualification	Yes	-

Substitute Part Grouping Explanation

Substitution of rectifier diodes is determined by electrical parameter equivalence and mechanical compatibility. The S07B-GS18 substitutes are grouped into two categories based on the following criteria:

Category 1: Parametric Equivalents (Identical Electrical and Mechanical Specifications)

Substitutes S1FLB-GS08 and S1FLB-M-08 are parametric equivalents to the S07B-GS18. These parts maintain identical specifications across all critical parameters: 100V reverse voltage rating, 700mA average rectified current, 1.1V forward voltage drop at 1A, 1.8µs reverse recovery time, and DO-219AB surface mount package. The only difference is packaging format (Cut Tape & Digi-Reel® versus Tape & Reel). These substitutes are interchangeable at the circuit level without design modification.

Category 2: Manufacturer Recommended Alternatives (Modified Electrical Specifications)

Substitutes SM4002PL-TP and UFM12PL-TP are manufacturer-recommended alternatives with modified electrical specifications. Both parts maintain the 100V reverse voltage rating and surface mount technology but differ in current rating (1A versus 700mA), package type (SOD-123FL versus DO-219AB), and recovery characteristics. These substitutes are suitable only when circuit design accommodates the higher current rating and alternative package footprint.

Parameter Comparison

Parameter	S07B-GS18	S1FLB-GS08	S1FLB-M-08	SM4002PL-TP	UFM12PL-TP
Manufacturer	Vishay	Vishay	Vishay	Micro Commercial Co	Micro Commercial Co
Voltage - DC Reverse (Vr) (Max)	100 V	100 V	100 V	100 V	100 V
Current - Average Rectified (Io)	700 mA	700 mA	700 mA	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	1 V @ 1 A
Speed	Standard Recovery >500ns	Standard Recovery >500ns	Standard Recovery >500ns	Standard Recovery >500ns	Fast Recovery ≤500ns
Reverse Recovery Time (trr)	1.8 µs	1.8 µs	1.8 µs	Not specified	35 ns
Current - Reverse Leakage @ Vr	10 µA @ 100 V	10 µA @ 100 V	10 µA @ 100 V	5 µA @ 100 V	10 µA @ 100 V
Package / Case	DO-219AB	DO-219AB	DO-219AB	SOD-123F	SOD-123F
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Operating Temperature - Junction	-55 to 150 °C	-55 to 150 °C	-55 to 150 °C	-65 to 175 °C	-65 to 150 °C
Product Status	Active	Active	Active	Not For New Designs	Not For New Designs
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

For Direct Replacement (Parametric Equivalents)

S1FLB-M-08 is the preferred direct replacement for S07B-GS18. Both parts are manufactured by Vishay General Semiconductor - Diodes Division and maintain identical electrical specifications and DO-219AB package compatibility. S1FLB-M-08 carries Active product status and is available in higher inventory (18,051 pieces). This substitute requires no circuit design modification and maintains full compatibility with existing PCB layouts and thermal management designs.

S1FLB-GS08 is an alternative parametric equivalent with identical electrical performance. This part is available in Cut Tape & Digi-Reel® packaging format in addition to Tape & Reel, providing flexibility for different procurement and assembly workflows.

For Alternative Applications (Modified Specifications)

SM4002PL-TP and UFM12PL-TP are manufacturer-recommended alternatives suitable only when circuit design accommodates the following modifications: higher current rating (1A versus 700mA), alternative package footprint (SOD-123FL versus DO-219AB), and different PCB layout requirements. Both parts carry "Not For New Designs" product status, indicating these are legacy alternatives. UFM12PL-TP features fast recovery characteristics (35ns trr) compared to standard recovery, which may introduce different switching behavior in rectification circuits.

Compliance and Qualification Considerations

S07B-GS18 carries AEC-Q101 automotive qualification. S1FLB-GS08 and S1FLB-M-08 maintain equivalent automotive-grade specifications. SM4002PL-TP and UFM12PL-TP do not specify AEC-Q101 qualification in the provided data. For automotive applications requiring AEC-Q101 compliance, only S1FLB-GS08 and S1FLB-M-08 are suitable substitutes.

All substitute parts are ROHS3 compliant, REACH unaffected, and classified under ECCN EAR99 and HTSUS 8541.10.0080, matching the regulatory classification of the main part.

Frequently Asked Questions (FAQ)

Q: Can S1FLB-M-08 be used as a direct replacement for S07B-GS18 without PCB modification?

A: Yes. S1FLB-M-08 is a parametric equivalent with identical electrical specifications (100V, 700mA, 1.1V forward voltage, 1.8µs recovery time) and identical DO-219AB surface mount package. No circuit design or PCB layout changes are required.

Q: What is the difference between S1FLB-GS08 and S1FLB-M-08?

A: Both parts are parametric equivalents with identical electrical specifications and DO-219AB packaging. The difference is packaging format: S1FLB-GS08 is available in Cut Tape & Digi-Reel® and Tape & Reel formats, while S1FLB-M-08 is supplied in Tape & Reel format only. Electrical performance and PCB compatibility are identical.

Q: Why are SM4002PL-TP and UFM12PL-TP listed as substitutes if they have different packages and current ratings?

A: These parts are manufacturer-recommended alternatives for applications where the higher 1A current rating and SOD-123FL package are acceptable. They maintain the 100V reverse voltage rating and surface mount technology. These substitutes require PCB redesign and are suitable only when circuit specifications accommodate the modified electrical characteristics.

Q: Can SM4002PL-TP or UFM12PL-TP be used in automotive applications requiring AEC-Q101 qualification?

A: No. The provided data does not specify AEC-Q101 qualification for SM4002PL-TP or UFM12PL-TP. For automotive applications requiring AEC-Q101 compliance, only S1FLB-GS08 and S1FLB-M-08 are suitable substitutes.

Q: What is the significance of "Not For New Designs" status for SM4002PL-TP and UFM12PL-TP?

A: "Not For New Designs" indicates these parts are legacy products. While functionally available, they are not recommended for new circuit designs. For new designs, S1FLB-M-08 or S1FLB-GS08 are preferred as they carry Active product status.

Q: How do the recovery characteristics of UFM12PL-TP differ from S07B-GS18?

A: UFM12PL-TP features fast recovery characteristics (35ns reverse recovery time) compared to S07B-GS18 standard recovery (1.8µs). This faster switching behavior may affect circuit performance in rectification applications and requires circuit analysis before substitution.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. S07B-GS18, S1FLB-GS08, S1FLB-M-08, SM4002PL-TP, and UFM12PL-TP are all ROHS3 compliant with Moisture Sensitivity Level 1 (Unlimited).

Q: What is the inventory status of each substitute part?

A: S1FLB-M-08 has the highest inventory at 18,051 pieces. UFM12PL-TP has 18,600 pieces. SM4002PL-TP has 12,800 pieces. S1FLB-GS08 has 3,200 pieces. S07B-GS18 has 909 pieces in stock.

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