H11A617AS Optoisolator Equivalent & Substitute Parts

Part Overview

The H11A617AS is a single-channel optoisolator with transistor output manufactured by onsemi, rated for 5300Vrms isolation voltage. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and production continuity. The H11A617AS operates with a 40–80% current transfer ratio at 10mA input and supports output currents up to 50mA with a maximum output voltage of 70V. Surface mount packaging in 4-SMD gull wing configuration enables integration into modern PCB designs.

Substiute Parts

H11A617AS

onsemiIn Stock: 866H11A617AS Datasheet

Current PartRFQ

SFH615A-2XSMT&R

Isocom Components 2004 LTDIn Stock: 7732SFH615A-2XSMT&R Datasheet

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SFH615A-3XSMT&R

Isocom Components 2004 LTDIn Stock: 2026SFH615A-3XSMT&R Datasheet

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SFH615A-4XSM

Isocom Components 2004 LTDIn Stock: 4194SFH615A-4XSM Datasheet

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SFH615A-4XSMT&R

Isocom Components 2004 LTDIn Stock: 6436SFH615A-4XSMT&R Datasheet

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SFH617A-2XSMT&R

Isocom Components 2004 LTDIn Stock: 866SFH617A-2XSMT&R Datasheet

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SFH617A-3XSMT&R

Isocom Components 2004 LTDIn Stock: 2079SFH617A-3XSMT&R Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the H11A617AS are selected based on strict electrical and mechanical compatibility criteria. The primary substitution parameters are:

• Single-channel transistor output optoisolator configuration
• 5300Vrms isolation voltage rating (primary electrical requirement)
• 4-SMD gull wing surface mount package
• Maximum output voltage of 70V
• Maximum output current of 50mA per channel
• Vce saturation maximum of 400mV
• Input type: DC
• Moisture sensitivity level MSL 1

The SFH615A series (manufactured by Isocom Components 2004 LTD) meets all core electrical and mechanical parameters. These parts maintain 5300Vrms isolation, 70V maximum output voltage, 50mA output current capability, and 400mV Vce saturation. All substitute parts are available in 4-SMD gull wing surface mount packaging and carry active product status with ROHS3 compliance.

The SFH617A series also qualifies as substitutes where isolation voltage specification differs (7.5Vpk instead of 5300Vrms); however, this represents a lower isolation rating and should be evaluated against specific circuit requirements.

Parameter Comparison

Engineering Selection Recommendations

All SFH615A variants (SFH615A-2XSMT&R, SFH615A-3XSMT&R, SFH615A-4XSM, SFH615A-4XSMT&R) provide direct electrical equivalence to the H11A617AS with matching 5300Vrms isolation voltage. These parts carry active product status and ROHS3 compliance, ensuring long-term availability and regulatory alignment. Selection among SFH615A variants depends on current transfer ratio requirements: the -2 variant provides 63–125% CTR, the -3 variant provides 100–200% CTR, and the -4 variants provide 160–320% CTR.

The SFH617A-2XSMT&R and SFH617A-3XSMT&R are active alternatives with identical electrical performance in output voltage, current, and saturation characteristics. However, these parts specify 7.5Vpk isolation voltage rather than 5300Vrms, representing a lower isolation rating. Selection of SFH617A variants requires confirmation that the reduced isolation voltage meets circuit isolation requirements.

Packaging format differences exist among substitutes: SFH615A-4XSM is supplied in tube format, while SFH615A-2XSMT&R, SFH615A-3XSMT&R, SFH615A-4XSMT&R, SFH617A-2XSMT&R, and SFH617A-3XSMT&R are supplied in tape and reel format. Operating temperature range narrows from -55°C to -30°C minimum across all active substitutes.

Frequently Asked Questions (FAQ)

Q: Can SFH615A series parts directly replace the H11A617AS?

A: Yes. The SFH615A series maintains identical isolation voltage (5300Vrms), output voltage (70V maximum), output current (50mA), and Vce saturation (400mV maximum). All parts use 4-SMD gull wing surface mount packaging. Differences in current transfer ratio and packaging format must be evaluated against specific circuit requirements.

Q: What is the difference between SFH615A and SFH617A substitutes?

A: The primary difference is isolation voltage specification. SFH615A variants maintain 5300Vrms isolation matching the H11A617AS. SFH617A variants specify 7.5Vpk isolation, which is lower. Both series share identical output voltage, current, and saturation characteristics. Selection depends on isolation voltage requirements in the target application.

Q: How do current transfer ratio variants affect substitution?

A: Current transfer ratio (CTR) determines the output current produced by a given input current. The H11A617AS specifies 40–80% CTR at 10mA. SFH615A-2XSMT&R provides 63–125% CTR, SFH615A-3XSMT&R provides 100–200% CTR, and SFH615A-4 variants provide 160–320% CTR. Higher CTR variants produce greater output current for the same input current. Circuit design must accommodate the selected CTR range.

Q: What packaging format differences exist among substitutes?

A: SFH615A-4XSM is supplied in tube format for manual handling. SFH615A-2XSMT&R, SFH615A-3XSMT&R, SFH615A-4XSMT&R, SFH617A-2XSMT&R, and SFH617A-3XSMT&R are supplied in tape and reel format for automated assembly. Packaging selection depends on production volume and assembly equipment capability.

Q: Are all substitute parts ROHS3 compliant?

A: All active substitute parts (SFH615A and SFH617A series) carry ROHS3 compliance certification. The obsolete H11A617AS does not specify RoHS status. ROHS3 compliance ensures regulatory alignment for new designs and production continuity.

Q: What is the operating temperature range difference?

A: The H11A617AS operates from -55°C to 100°C. All active substitutes operate from -30°C to 100°C. Applications requiring operation below -30°C cannot use these substitutes without additional thermal management or circuit redesign.