SS19-E3/5AT Equivalent & Substitute Parts

Part Overview

The SS19-E3/5AT is a Schottky rectifier diode manufactured by Vishay General Semiconductor - Diodes Division, rated for 90 V DC reverse voltage and 1 A average rectified current in a surface mount DO-214AC (SMA) package. This part is classified as obsolete, necessitating identification of active equivalent and substitute components for ongoing design requirements and procurement needs. Equivalent parts maintain identical electrical and mechanical specifications, while substitute parts provide functional alternatives within acceptable parameter tolerances for the application.

Substiute Parts

SS19-E3/5AT

Vishay General Semiconductor - Diodes DivisionIn Stock: 1141SS19-E3/5AT Datasheet

Current PartRFQ

SS1H9-E3/5AT

Vishay General Semiconductor - Diodes DivisionIn Stock: 1097SS1H9-E3/5AT Datasheet

DirectRFQ

STPS1H100A

STMicroelectronicsIn Stock: 149206STPS1H100A Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SS19-E3/5AT is determined by the following critical parameters:

Electrical Compatibility Criteria:

• Voltage - DC Reverse (Vr) (Max): Substitute parts must equal or exceed 90 V
• Current - Average Rectified (Io): Substitute parts must equal or exceed 1 A
• Technology: Schottky diode technology maintained across all substitutes
• Speed: Fast Recovery characteristic (≤ 500ns, > 200mA) required

Mechanical Compatibility Criteria:

• Mounting Type: Surface Mount required
• Package / Case: DO-214AC (SMA) package required

Compliance Criteria:

• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level (MSL): 1 (Unlimited)

Parts meeting all electrical, mechanical, and compliance criteria are classified as direct substitutes. The SS1H9-E3/5AT maintains identical voltage and current ratings with active product status. The STPS1H100A provides higher voltage rating (100 V) while maintaining 1 A current capacity, representing an upgraded substitute suitable for applications with higher voltage margin requirements.

Parameter Comparison

Engineering Selection Recommendations

SS1H9-E3/5AT (Direct Equivalent): The SS1H9-E3/5AT is the primary equivalent substitute for the obsolete SS19-E3/5AT. Both parts are manufactured by Vishay General Semiconductor - Diodes Division and maintain identical electrical specifications: 90 V DC reverse voltage and 1 A average rectified current. The SS1H9-E3/5AT holds active product status, ensuring long-term availability and supply chain continuity. Both parts are ROHS3 compliant with MSL 1 (Unlimited) rating. The primary distinction is packaging format: SS1H9-E3/5AT is supplied in Tape & Reel (TR) configuration. This part is suitable for direct replacement in applications where the original SS19-E3/5AT specifications are required.

STPS1H100A (Upgraded Substitute): The STPS1H100A, manufactured by STMicroelectronics, provides a higher voltage rating of 100 V while maintaining 1 A current capacity. This part is classified as an upgraded substitute, appropriate for applications where increased voltage margin is beneficial or required. The STPS1H100A maintains identical fast recovery speed characteristics and is ROHS3 compliant with MSL 1 (Unlimited) rating. Forward voltage drop and reverse leakage characteristics are comparable to the SS1H9-E3/5AT. The STPS1H100A is supplied in Cut Tape (CT) & Digi-Reel® packaging with significantly higher inventory availability (149,100 pcs). Selection of this part is appropriate when circuit design permits the higher voltage rating or when enhanced voltage headroom is desired.

Both substitute parts satisfy all compliance requirements and mechanical compatibility criteria. Selection between SS1H9-E3/5AT and STPS1H100A depends on application voltage requirements and packaging preferences.

Frequently Asked Questions (FAQ)

Q: Can the SS1H9-E3/5AT directly replace the obsolete SS19-E3/5AT?

A: Yes. The SS1H9-E3/5AT is a direct equivalent, maintaining identical voltage (90 V), current (1 A), technology (Schottky), speed (Fast Recovery ≤ 500ns), and package (DO-214AC, SMA) specifications. Both parts are ROHS3 compliant with MSL 1 rating. The primary difference is packaging format (Tape & Reel vs. bulk).

Q: What is the difference between SS1H9-E3/5AT and STPS1H100A?

A: The SS1H9-E3/5AT maintains the original 90 V rating, while the STPS1H100A provides 100 V rating. Both support 1 A current and Fast Recovery speed. The STPS1H100A is manufactured by STMicroelectronics rather than Vishay. Both are ROHS3 compliant and use identical DO-214AC (SMA) packaging. The STPS1H100A is suitable when higher voltage margin is required or beneficial.

Q: Are all substitute parts compatible with the original DO-214AC (SMA) footprint?

A: Yes. All listed substitute parts use the DO-214AC (SMA) package, ensuring mechanical and footprint compatibility with designs originally specified for the SS19-E3/5AT.

Q: Do the substitute parts meet RoHS and MSL requirements?

A: Yes. Both SS1H9-E3/5AT and STPS1H100A are ROHS3 compliant with Moisture Sensitivity Level 1 (Unlimited), matching the compliance profile of the original SS19-E3/5AT.

Q: What is the difference in packaging between SS1H9-E3/5AT and STPS1H100A?

A: SS1H9-E3/5AT is supplied in Tape & Reel (TR) format. STPS1H100A is supplied in Cut Tape (CT) & Digi-Reel® format. Both formats are standard surface mount packaging options. Selection depends on assembly process requirements and procurement preferences.

Q: Can STPS1H100A be used in applications designed for 90 V operation?

A: Yes. The STPS1H100A's 100 V rating exceeds the 90 V requirement, providing additional voltage margin. This part is suitable for any application originally specified for 90 V operation, provided circuit design permits the higher voltage rating.

Q: What are the key electrical parameters that determine substitutability?

A: Substitutability is determined by: (1) Voltage - DC Reverse (Vr) (Max) equal to or exceeding 90 V, (2) Current - Average Rectified (Io) equal to or exceeding 1 A, (3) Schottky technology, (4) Fast Recovery speed characteristic (≤ 500ns, > 200mA), and (5) DO-214AC (SMA) package compatibility.