FS1J-TP Equivalent & Substitute Parts

Part Overview

The FS1J-TP is a general-purpose rectifier diode manufactured by Micro Commercial Co, rated for 600 V DC reverse voltage and 1 A average rectified current in a surface mount DO-214AC (HSMA) package. This component is classified as obsolete, which necessitates identification of equivalent and substitute parts for ongoing design requirements and procurement needs. Substitute parts must maintain electrical compatibility across voltage, current, and thermal specifications while accommodating available packaging and product status options.

Substiute Parts

FS1J-TP

Micro Commercial CoIn Stock: 793FS1J-TP Datasheet

Current PartRFQ

FS1J-LTP

Micro Commercial CoIn Stock: 85139FS1J-LTP Datasheet

DirectRFQ

STTH2R06A

STMicroelectronicsIn Stock: 19603STTH2R06A Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the FS1J-TP are classified based on electrical parameter compatibility and product availability status. The primary substitution criteria are:

Electrical Compatibility Parameters:

• Voltage - DC Reverse (Vr) (Max): Must equal or exceed 600 V
• Current - Average Rectified (Io): Must equal or exceed 1 A
• Speed Classification: Must maintain Fast Recovery characteristics (≤ 500ns, > 200mA)
• Reverse Recovery Time (trr): Must not exceed 250 ns
• Current - Reverse Leakage @ Vr: Must not exceed 5 µA @ 600 V
• Mounting Type: Surface Mount required
• Package / Case: DO-214AC, SMA compatible

Availability and Compliance Parameters:

• Product Status: Active status preferred for long-term availability
• RoHS Status: ROHS3 Compliant required
• Moisture Sensitivity Level: MSL 1 (Unlimited) preferred

Substitute parts are grouped into direct equivalents (identical electrical specifications with different packaging) and similar parts (enhanced electrical specifications that maintain backward compatibility).

Parameter Comparison

Engineering Selection Recommendations

FS1J-LTP (Direct Equivalent - Recommended Primary Substitute)

The FS1J-LTP is the direct electrical equivalent of the FS1J-TP, manufactured by the same supplier (Micro Commercial Co) with identical voltage, current, and speed specifications. The primary distinction is product status: FS1J-LTP is Active, ensuring long-term availability and supply chain continuity. The packaging difference (Tape & Reel versus bulk) accommodates high-volume production requirements. Both parts maintain ROHS3 compliance and MSL 1 (Unlimited) ratings. The FS1J-LTP is suitable for direct replacement in all applications where the FS1J-TP was specified.

STTH2R06A (Similar Part - Enhanced Specifications)

The STTH2R06A from STMicroelectronics provides enhanced electrical performance while maintaining backward compatibility. This part exceeds the FS1J-TP specifications in current capacity (2 A versus 1 A), reverse recovery time (50 ns versus 250 ns), and reverse leakage current (2 µA versus 5 µA). The operating temperature range extends to 175 °C (versus 150 °C). The STTH2R06A is suitable for applications requiring improved performance margins or higher current handling. This part is Active status with ROHS3 compliance and REACH Unaffected certification.

Both substitute parts are qualified for direct component selection based on product status, regulatory compliance, and electrical parameter compatibility.

Frequently Asked Questions (FAQ)

Q: Can FS1J-LTP be used as a direct replacement for FS1J-TP?

A: Yes. The FS1J-LTP is electrically identical to the FS1J-TP across all critical parameters: 600 V reverse voltage, 1 A average rectified current, 250 ns reverse recovery time, and 5 µA reverse leakage current. The primary difference is product status (Active versus Obsolete) and packaging format (Tape & Reel). Both parts use DO-214AC (SMA) package configuration and are ROHS3 compliant.

Q: What is the difference between FS1J-TP and FS1J-LTP packaging?

A: The FS1J-TP is supplied in bulk packaging (HSMA), while the FS1J-LTP is supplied in Tape & Reel (TR) format. Both use the same DO-214AC (SMA) physical package. Tape & Reel packaging is standard for automated assembly processes and high-volume production. The electrical specifications and physical dimensions are identical.

Q: Can STTH2R06A replace FS1J-TP in all applications?

A: The STTH2R06A is electrically compatible with the FS1J-TP and exceeds its specifications in current capacity (2 A versus 1 A), reverse recovery time (50 ns versus 250 ns), and reverse leakage current (2 µA versus 5 µA). Applications designed for 1 A operation will function correctly with the STTH2R06A. The higher current rating and faster recovery time provide improved performance margins. The extended operating temperature range (-40 to 175 °C) accommodates wider thermal environments.

Q: Are all substitute parts RoHS compliant?

A: Yes. The FS1J-TP, FS1J-LTP, and STTH2R06A are all ROHS3 compliant. The FS1J-LTP and STTH2R06A also carry REACH Unaffected certification, confirming compliance with European chemical regulations.

Q: What is the significance of reverse recovery time in these diodes?

A: Reverse recovery time (trr) is the interval required for a diode to transition from forward conduction to reverse blocking when the applied voltage reverses. The FS1J-TP and FS1J-LTP specify 250 ns reverse recovery time, classifying them as Fast Recovery diodes. The STTH2R06A provides superior performance with 50 ns reverse recovery time, reducing switching losses and enabling higher frequency operation.

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

A: The FS1J-TP and FS1J-LTP share identical physical dimensions and electrical specifications, permitting direct PCB layout reuse. The STTH2R06A uses the same DO-214AC (SMA) package and pinout, allowing PCB compatibility. However, the STTH2R06A's enhanced specifications (higher current capacity and faster recovery) may require circuit design verification to confirm performance optimization.

Q: What is Moisture Sensitivity Level (MSL) 1?

A: MSL 1 (Unlimited) indicates that the component has unlimited shelf life and does not require special moisture control during storage or handling. No baking or desiccant packaging is required. All three parts (FS1J-TP, FS1J-LTP, and STTH2R06A) carry MSL 1 rating.