S4B General Purpose Rectifier Diode 100V 4A DO-214AB

Part Overview

The S4B is a general purpose rectifier diode manufactured by Taiwan Semiconductor Corporation, designed for surface mount applications in the DO-214AB (SMC) package. This component operates at 100V DC reverse voltage with a 4A average rectified current rating, suitable for standard recovery rectification applications.

The S4B maintains Active product status with 1010 pieces currently in stock. Identifying equivalent and substitute parts is necessary to ensure design flexibility, manage supply chain continuity, and maintain compatibility across manufacturing batches and procurement cycles.

Substiute Parts

S4B

Taiwan Semiconductor CorporationIn Stock: 1033S4B Datasheet

Current PartRFQ

S4B V7G

Taiwan Semiconductor CorporationIn Stock: 2357S4B V7G Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the S4B are identified based on electrical and mechanical parameter equivalence. The following criteria determine substitution eligibility:

Electrical Parameters (Critical):

• Voltage - DC Reverse (Vr) (Max): 100V
• Current - Average Rectified (Io): 4A
• Voltage - Forward (Vf) (Max) @ If: 1.15V @ 4A
• Reverse Recovery Time (trr): 1.5µs
• Current - Reverse Leakage @ Vr: 10µA @ 100V
• Capacitance @ Vr, F: 60pF @ 4V, 1MHz

Mechanical Parameters (Critical):

• Package / Case: DO-214AB, SMC
• Mounting Type: Surface Mount

Environmental & Compliance Parameters:

• Operating Temperature - Junction: -55°C to 150°C
• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level (MSL): 1 (Unlimited)

Parts matching all electrical, mechanical, and compliance parameters are classified as direct substitutes.

Parameter Comparison

Engineering Selection Recommendations

S4B (Primary Part)

The S4B is the recommended primary selection for new designs and active procurement. This part maintains Active product status with established supply availability (1010 pieces in stock). Full ROHS3 compliance and REACH unaffected status confirm regulatory alignment for current manufacturing standards.

S4B V7G (Substitute Part)

The S4B V7G is a parametric equivalent substitute with identical electrical and mechanical specifications. However, this part is listed as Discontinued at DiGi Electronics. While the S4B V7G demonstrates complete parameter equivalence and maintains the same compliance certifications (ROHS3 Compliant, REACH Unaffected), its discontinued status limits its suitability for ongoing production requirements.

The S4B V7G remains suitable for legacy system repairs, field replacements, or applications where existing inventory is available (2274 pieces reported in stock). Selection between S4B and S4B V7G should prioritize the S4B for new designs due to its Active product status and assured long-term availability.

Frequently Asked Questions (FAQ)

Q: Can the S4B V7G be used as a direct replacement for the S4B?

A: Yes. The S4B V7G is a parametric equivalent with identical electrical ratings (100V, 4A), forward voltage characteristics (1.15V @ 4A), reverse recovery time (1.5µs), and reverse leakage current (10µA @ 100V). Both parts use the DO-214AB (SMC) surface mount package and share identical operating temperature ranges (-55°C to 150°C) and compliance certifications.

Q: Why is the S4B V7G listed as discontinued?

A: The S4B V7G is discontinued at DiGi Electronics, indicating it is no longer actively procured through this distribution channel. However, existing inventory (2274 pieces) remains available. For new production designs, the S4B (Active status) is the recommended selection.

Q: Are there any package compatibility differences between S4B and S4B V7G?

A: No. Both parts use the DO-214AB (SMC) surface mount package with identical mechanical specifications. PCB footprints, reflow profiles, and assembly processes are interchangeable.

Q: What compliance certifications apply to both parts?

A: Both the S4B and S4B V7G are ROHS3 Compliant, REACH Unaffected, and classified under ECCN EAR99. Both share the same HTSUS code (8541.10.0080). Moisture Sensitivity Level is 1 (Unlimited) for both parts, indicating no special moisture handling requirements.

Q: Can these parts be used interchangeably in existing designs?

A: Yes. Electrical performance, thermal characteristics, and package dimensions are identical. Designs qualified with either part number will function identically in the application circuit.

Q: What is the reverse recovery time specification, and why does it matter?

A: Both parts specify a reverse recovery time (trr) of 1.5µs with standard recovery characteristics (>500ns, >200mA). This parameter defines the time required for the diode to transition from forward conduction to reverse blocking. Identical specifications ensure equivalent switching behavior in rectification circuits.