1SS187,LF Equivalent & Substitute Parts

Part Overview

The 1SS187,LF is a general-purpose surface mount diode manufactured by Toshiba Semiconductor and Storage, rated for 80 V DC reverse voltage and 100 mA average rectified current. This small signal diode is packaged in S-Mini (TO-236-3/SOT-23-3) configuration and is classified as an active product with ROHS3 compliance. Substitute parts are identified when equivalent electrical performance and mechanical compatibility are required due to inventory constraints, design flexibility, or supply chain considerations.

Substiute Parts

1SS187,LF

Toshiba Semiconductor and StorageIn Stock: 631301SS187,LF Datasheet

Current PartRFQ

1SS190TE85LF

Toshiba Semiconductor and StorageIn Stock: 38931SS190TE85LF Datasheet

Parametric EquivalentRFQ

1SS193,LF

Toshiba Semiconductor and StorageIn Stock: 632341SS193,LF Datasheet

Parametric EquivalentRFQ

1SS196(TE85L,F)

Toshiba Semiconductor and StorageIn Stock: 11971SS196(TE85L,F) Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 1SS187,LF are qualified based on the following electrical and mechanical parameters:

Primary Substitution Criteria:

• Voltage - DC Reverse (Vr) (Max): 80 V
• Current - Average Rectified (Io): 100 mA
• Voltage - Forward (Vf) (Max) @ If: 1.2 V @ 100 mA
• Reverse Recovery Time (trr): 4 ns
• Current - Reverse Leakage @ Vr: 500 nA @ 80 V
• Mounting Type: Surface Mount
• Package / Case: TO-236-3, SC-59, SOT-23-3
• Operating Temperature - Junction (Max): 125°C
• Technology: Standard
• RoHS Status: ROHS3 Compliant or RoHS Compliant

All substitute parts listed maintain identical or equivalent electrical performance across these parameters. Minor variations in capacitance (3 pF versus 4 pF) do not affect substitution eligibility within the small signal diode category. Package designations (S-Mini versus SC-59-3) are both valid within the TO-236-3/SOT-23-3 family and are mechanically and electrically interchangeable.

Parameter Comparison

Engineering Selection Recommendations

All substitute parts listed—1SS190TE85LF, 1SS193,LF, and 1SS196(TE85L,F)—are qualified equivalents for the 1SS187,LF based on electrical parameter matching and mechanical compatibility.

1SS190TE85LF: This part maintains identical electrical specifications and ROHS3 compliance. The SC-59-3 package designation is mechanically compatible within the TO-236-3/SOT-23-3 family. Current inventory is 3,800 units.

1SS193,LF: This part maintains identical electrical specifications and ROHS3 compliance. The S-Mini package designation matches the primary part. Capacitance is specified at 3 pF rather than 4 pF, which does not affect small signal diode performance. Current inventory is 63,198 units.

1SS196(TE85L,F): This part maintains identical electrical specifications with RoHS compliance. The SC-59-3 package designation is mechanically compatible within the TO-236-3/SOT-23-3 family. Capacitance is specified at 3 pF rather than 4 pF. Current inventory is 1,097 units.

All parts are manufactured by Toshiba Semiconductor and Storage and are classified as active products. Selection among these equivalents may be based on inventory availability, package preference, or supply chain requirements.

Frequently Asked Questions (FAQ)

Q: Can 1SS193,LF be used as a direct replacement for 1SS187,LF?

A: Yes. Both parts share identical electrical specifications: 80 V reverse voltage, 100 mA average rectified current, 1.2 V forward voltage at 100 mA, 4 ns reverse recovery time, and 500 nA reverse leakage current at 80 V. Both are packaged in S-Mini (TO-236-3/SOT-23-3) and are ROHS3 compliant. The minor difference in capacitance (3 pF versus 4 pF) does not affect substitution eligibility for small signal diode applications.

Q: What is the difference between S-Mini and SC-59-3 package designations?

A: Both S-Mini and SC-59-3 are valid designations within the TO-236-3/SOT-23-3 package family. They are mechanically and electrically interchangeable. The different naming conventions reflect supplier or regional nomenclature variations. All parts listed support both package designations.

Q: Are all substitute parts RoHS compliant?

A: Yes. The 1SS187,LF, 1SS190TE85LF, and 1SS193,LF are ROHS3 compliant. The 1SS196(TE85L,F) is RoHS compliant. Both compliance levels are acceptable for equivalent substitution.

Q: Can I substitute 1SS190TE85LF or 1SS196(TE85L,F) if my design specifies S-Mini packaging?

A: The SC-59-3 package designation used by 1SS190TE85LF and 1SS196(TE85L,F) is mechanically and electrically compatible with S-Mini within the TO-236-3/SOT-23-3 family. However, if your PCB layout or assembly process requires strict adherence to S-Mini footprint specifications, 1SS193,LF is the preferred substitute as it uses the same S-Mini designation as the primary part.

Q: What is the Moisture Sensitivity Level (MSL) for all parts?

A: All parts are rated MSL 1 (Unlimited), indicating no moisture sensitivity restrictions during storage or handling.

Q: Are there any electrical performance differences between the substitute parts?

A: All substitute parts maintain the same critical electrical parameters: 80 V reverse voltage, 100 mA current rating, 1.2 V forward voltage, 4 ns reverse recovery time, and 500 nA reverse leakage current. Capacitance values differ slightly (3 pF versus 4 pF), but this variation is within acceptable tolerances for small signal diode applications and does not affect functional substitution.