STPS1L40M Equivalent & Substitute Parts

Part Overview

The STPS1L40M is an active Schottky rectifier diode manufactured by STMicroelectronics, rated for 40 V DC reverse voltage and 1 A average rectified current. This component is packaged in the DO-216AA surface mount configuration and is designed for fast recovery applications with switching speeds ≤ 500 ns at currents > 200 mA. The part is ROHS3 compliant with unlimited moisture sensitivity rating (MSL 1).

Equivalent and substitute parts are identified when alternative manufacturers offer Schottky rectifier diodes with matching or compatible electrical ratings and mechanical packaging specifications. Substitution becomes necessary when the primary part experiences supply constraints, extended lead times, or when design flexibility across multiple qualified suppliers is required.

Substiute Parts

STPS1L40M

STMicroelectronicsIn Stock: 17440STPS1L40M Datasheet

Current PartRFQ

UPS5819E3/TR7

Microsemi CorporationIn Stock: 7969UPS5819E3/TR7 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the STPS1L40M is based on the following critical electrical and mechanical parameters:

Electrical Compatibility Criteria:

• Voltage - DC Reverse (Vr) (Max): Must equal or exceed 40 V
• Current - Average Rectified (Io): Must equal or exceed 1 A
• Technology: Schottky rectifier diode
• Speed: Fast Recovery ≤ 500 ns at currents > 200 mA

Mechanical Compatibility Criteria:

• Package / Case: DO-216AA (surface mount)
• Mounting Type: Surface Mount

Compliance & Environmental Criteria:

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

The substitute part UPS5819E3/TR7 meets all electrical and mechanical requirements. Both parts are Schottky rectifier diodes with identical voltage and current ratings, matching package specifications, and equivalent fast recovery performance. Both are ROHS3 compliant with MSL 1 rating.

Parameter Comparison

Engineering Selection Recommendations

Both the STPS1L40M and UPS5819E3/TR7 are active Schottky rectifier diodes with identical voltage and current ratings, matching DO-216AA surface mount packaging, and equivalent fast recovery performance specifications. Both parts are ROHS3 compliant and carry MSL 1 (unlimited) moisture sensitivity ratings.

The primary difference between these parts is the forward voltage drop (Vf) at 1 A, where the UPS5819E3/TR7 exhibits 550 mV compared to the STPS1L40M at 460 mV. This 90 mV difference results in higher power dissipation in the substitute part. Additionally, the UPS5819E3/TR7 demonstrates higher reverse leakage current (1 mA versus 63 µA at 40 V).

Selection between these parts should be based on circuit power dissipation requirements and leakage current sensitivity. The STPS1L40M is preferred for applications where minimizing forward voltage drop and reverse leakage current is critical. The UPS5819E3/TR7 is suitable for applications where these performance differences are within acceptable design margins.

Both parts are suitable for direct substitution in DO-216AA surface mount applications rated for 40 V, 1 A Schottky rectification with fast recovery characteristics.

Frequently Asked Questions (FAQ)

Q: Can the UPS5819E3/TR7 be used as a direct replacement for the STPS1L40M?

A: Yes. Both parts are Schottky rectifier diodes with identical 40 V reverse voltage and 1 A current ratings, matching DO-216AA surface mount packaging, and equivalent fast recovery performance. Both are ROHS3 compliant with MSL 1 rating. The UPS5819E3/TR7 exhibits higher forward voltage drop (550 mV versus 460 mV) and higher reverse leakage current (1 mA versus 63 µA), which must be evaluated against circuit design requirements.

Q: What are the key electrical differences between these parts?

A: The STPS1L40M has a lower forward voltage drop of 460 mV at 1 A compared to the UPS5819E3/TR7 at 550 mV. The STPS1L40M also has lower reverse leakage current at 63 µA versus 1 mA for the UPS5819E3/TR7, both measured at 40 V. These differences affect power dissipation and leakage current performance in the circuit.

Q: Are the packages physically identical?

A: Yes. Both parts use the DO-216AA surface mount package. They are mechanically interchangeable in PCB layouts designed for this package specification.

Q: Do both parts meet the same compliance standards?

A: Yes. Both the STPS1L40M and UPS5819E3/TR7 are ROHS3 compliant and carry MSL 1 (unlimited) moisture sensitivity ratings. Both are REACH unaffected and classified under ECCN EAR99.

Q: What is the maximum junction temperature for each part?

A: Both parts are rated for a maximum junction temperature of 150°C.

Q: Which part should be selected for low-power-dissipation applications?

A: The STPS1L40M is preferred for applications where minimizing forward voltage drop is critical, as it exhibits 460 mV at 1 A compared to 550 mV for the UPS5819E3/TR7. This lower forward voltage results in reduced power dissipation.

Q: Are there any differences in reverse recovery time?

A: No. Both parts meet the fast recovery specification of ≤ 500 ns at currents > 200 mA.