SFH620A-3SM Equivalent & Substitute Parts

Part Overview

The SFH620A-3SM is an optoisolator with transistor output manufactured by Isocom Components 2004 LTD. This component provides galvanic isolation for AC and DC input signals with a single channel configuration in a 4-SMD surface mount package. The part is currently active in production with 767 units in stock. Alternative models may be required due to inventory constraints, supply chain considerations, or specific application requirements within the same electrical and mechanical parameter space.

Substiute Parts

SFH620A-3SM

Isocom Components 2004 LTDIn Stock: 813SFH620A-3SM Datasheet

Current PartRFQ

SFH620A-3XSM

Isocom Components 2004 LTDIn Stock: 1356SFH620A-3XSM Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

The SFH620A-3SM has one parametric equivalent substitute: SFH620A-3XSM. This substitution is valid based on the following criteria:

Both parts share identical electrical specifications across all critical parameters: single channel configuration, 7.5Vpk isolation voltage, 100-320% current transfer ratio at 10mA, 70V maximum output voltage, 50mA output current per channel, and 400mV maximum Vce saturation. Both components feature transistor output topology, support AC and DC input types, and operate across the same temperature range of -30°C to 100°C.

Mechanical compatibility is confirmed through identical package specifications: both use 4-SMD surface mount with Gull Wing lead configuration. Compliance certifications are equivalent: both are ROHS3 compliant, REACH unaffected, and carry MSL rating of 1 (unlimited moisture sensitivity level).

The substitution is based strictly on matching electrical performance parameters, output characteristics, isolation specifications, and mechanical packaging requirements.

Parameter Comparison

Engineering Selection Recommendations

Both the SFH620A-3SM and SFH620A-3XSM are active production components from the same manufacturer and series. Selection between these parts should be based on availability and supply chain requirements. Both parts meet ROHS3 compliance and REACH regulatory requirements, making them suitable for applications with environmental and regulatory constraints.

The SFH620A-3XSM currently has higher inventory availability at 1261 units compared to 767 units for the SFH620A-3SM. For applications requiring long-term supply assurance or higher volume procurement, the SFH620A-3XSM may provide better supply chain flexibility while maintaining identical electrical and mechanical performance.

Frequently Asked Questions (FAQ)

Q: Can SFH620A-3XSM be used as a direct replacement for SFH620A-3SM?

A: Yes. Both parts are parametric equivalents with identical electrical specifications, output characteristics, isolation voltage, current transfer ratios, and operating temperature ranges. They share the same 4-SMD Gull Wing package configuration and are mechanically interchangeable.

Q: Are there any differences in compliance or certifications between these parts?

A: No. Both parts carry identical compliance certifications: ROHS3 compliant, REACH unaffected, and MSL rating of 1 (unlimited). Both are active production components from Isocom Components 2004 LTD.

Q: What are the key parameters that define substitution eligibility for optoisolators in this category?

A: Substitution eligibility is determined by: number of channels, isolation voltage rating, current transfer ratio range, output type (transistor), maximum output voltage, maximum output current per channel, Vce saturation characteristics, operating temperature range, and package configuration. All these parameters must match between the main part and substitute.

Q: Does the package type affect substitution compatibility?

A: Yes. Both parts use identical 4-SMD surface mount packages with Gull Wing lead configuration. Package compatibility is a mandatory requirement for direct substitution in PCB assembly applications.

Q: What inventory considerations should guide part selection?

A: The SFH620A-3XSM has higher current inventory (1261 units) compared to the SFH620A-3SM (767 units). For applications with extended lead times or volume requirements, the higher inventory availability of SFH620A-3XSM may provide supply chain advantages.