STPS1L40AFN Equivalent & Substitute Parts Reference

Part Overview

STMicroelectronics part STPS1L40AFN is a Schottky diode rated 40 V, 1 A in a DO-221AC (SMAflat Notch) surface-mount package. This device features fast recovery speed, low forward voltage drop, and low reverse leakage. The product status is Obsolete, which necessitates finding alternative models for design continuity, service, or replacement requirements.

Substiute Parts

STPS1L40AFN

STMicroelectronicsIn Stock: 1086STPS1L40AFN Datasheet

Current PartRFQ

STPS1L40A

STMicroelectronicsIn Stock: 55321STPS1L40A Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute Schottky diodes are grouped strictly by matching the following allowed parameters for this product category: voltage rating, current capability, technology, forward voltage, reverse leakage, switching speed, mounting style, and compliance certifications. Only models explicitly specified as substitutes by the manufacturer or sharing all listed parameters are considered.

Parameter Comparison

Engineering Selection Recommendations

Selection is supported by the substitute part STPS1L40A being active and possessing compliance certifications equivalent to STPS1L40AFN, such as RoHS3 and REACH. Both parts share the same electrical ratings and are classified in the same category. The substitute is supplied in DO-214AC (SMA) package, whereas the main part uses DO-221AC (SMA Flat Leads); any mechanical mounting differences must be considered. Regulatory and compliance certifications, such as ECCN and HTSUS classifications, match exactly.

Frequently Asked Questions (FAQ)

Q1: Which key electrical parameters must match for substitution in the Schottky diode category?
A1: Voltage rating, current rating, forward voltage drop, reverse leakage current, and switching speed must correspond exactly for effective substitution.

Q2: Is the difference in package type between STPS1L40AFN (DO-221AC, SMA Flat Leads) and STPS1L40A (DO-214AC, SMA) significant?
A2: Both devices are surface mount, but they employ different package outlines. Compatibility with existing PCB footprints must be confirmed based on package type.

Q3: Are compliance certifications consistent between these Schottky rectifier models?
A3: Both STPS1L40AFN and STPS1L40A are RoHS3 compliant, REACH unaffected, and have the same ECCN and HTSUS codes.

Q4: Is the operating temperature specification identical?
A4: The main part (STPS1L40AFN) is rated for 175°C junction temperature, whereas the substitute (STPS1L40A) is rated for 150°C.

Q5: What is the relevance of product status in selection?
A5: The main part is Obsolete; the substitute part STPS1L40A is Active, ensuring ongoing availability for production and service requirements.