SFH620A-3G Equivalent & Substitute Parts

Part Overview

The SFH620A-3G is a single-channel optoisolator with transistor output, designed for AC and DC input applications. This component provides galvanic isolation up to 7.5Vpk and is housed in a 4-DIP through-hole package. The part is currently active in production with full inventory availability. Equivalent substitute parts are identified to support procurement flexibility, design continuity, and supply chain management.

Substiute Parts

SFH620A-3G

Isocom Components 2004 LTDIn Stock: 1059SFH620A-3G Datasheet

Current PartRFQ

SFH620A-3XG

Isocom Components 2004 LTDIn Stock: 1079SFH620A-3XG Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

The SFH620A-3G has one identified parametric equivalent: SFH620A-3XG. This substitution is valid based on the following criteria:

Matching Parameters (Substitution Basis):

• Identical isolation voltage: 7.5Vpk
• Identical current transfer ratio range: 100% to 320% @ 10mA
• Identical output type: Transistor
• Identical maximum output voltage: 70V
• Identical maximum output current: 50mA
• Identical Vce saturation: 400mV
• Identical operating temperature range: -30°C ~ 100°C
• Identical package: 4-DIP (0.400", 10.16mm)
• Identical mounting type: Through Hole
• Identical input type: AC, DC
• Identical rise/fall time: 4µs, 3µs

Both parts belong to the SFH620A-3 series and maintain full electrical and mechanical compatibility for direct substitution in circuit applications.

Parameter Comparison

Engineering Selection Recommendations

Both SFH620A-3G and SFH620A-3XG are active products with full ROHS3 compliance and REACH unaffected status. Selection between these parts may be based on inventory availability and supplier logistics. The SFH620A-3G currently has 1000 pieces in stock, while the SFH620A-3XG has 1050 pieces available. Both parts are supplied in tube packaging and are suitable for through-hole PCB assembly processes. No electrical or mechanical differentiation exists between these parts; substitution is direct and interchangeable.

Frequently Asked Questions (FAQ)

Q: Can SFH620A-3XG be used as a direct replacement for SFH620A-3G?

A: Yes. Both parts share identical electrical specifications, including isolation voltage, current transfer ratio, output characteristics, and operating temperature range. The 4-DIP package dimensions and through-hole mounting are identical, enabling direct PCB substitution without design modification.

Q: Are there any differences in isolation voltage or output current between these parts?

A: No. Both parts provide 7.5Vpk isolation voltage and support 50mA maximum output current per channel. Current transfer ratio performance is identical across the specified range.

Q: Do both parts support AC and DC input signals?

A: Yes. Both SFH620A-3G and SFH620A-3XG accept AC and DC input types, with identical rise and fall time characteristics of 4µs and 3µs respectively.

Q: What is the package compatibility between these parts?

A: Both parts use the 4-DIP (0.400", 10.16mm) package with through-hole mounting. PCB footprints and assembly processes are identical.

Q: Are both parts RoHS compliant?

A: Yes. Both SFH620A-3G and SFH620A-3XG are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements.