H11A3G Optoisolator Equivalent & Substitute Parts

Part Overview

The H11A3G is a single-channel optoisolator transistor detector manufactured by Isocom Components 2004 LTD. This 6-DIP through-hole component provides galvanic isolation with a 7.5Vpk isolation voltage rating and transistor output with base access. The part is currently active in production with 1122 units in stock. Equivalent and substitute parts are identified based on matching electrical characteristics, mechanical compatibility, and compliance certifications to support component sourcing flexibility and supply chain continuity.

Substiute Parts

H11A3G

Isocom Components 2004 LTDIn Stock: 1191H11A3G Datasheet

Current PartRFQ

H11A2XG

Isocom Components 2004 LTDIn Stock: 1095H11A2XG Datasheet

Parametric EquivalentRFQ

H11A3XG

Isocom Components 2004 LTDIn Stock: 1099H11A3XG Datasheet

Parametric EquivalentRFQ

TIL116XG

Isocom Components 2004 LTDIn Stock: 1165TIL116XG Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the H11A3G are qualified based on the following critical parameters that determine functional and mechanical compatibility:

• Number of Channels: 1 channel (single-channel isolation requirement)
• Voltage - Isolation: 7.5Vpk (isolation voltage specification)
• Current Transfer Ratio (Min): 20% @ 10mA (optical coupling efficiency)
• Output Type: Transistor with Base (output configuration)
• Voltage - Output (Max): 30V (maximum collector voltage rating)
• Current - Output / Channel: 50mA (maximum output current)
• Vce Saturation (Max): 400mV (saturation voltage specification)
• Operating Temperature: -55°C ~ 100°C (thermal operating range)
• Package / Case: 6-DIP (0.400", 10.16mm) (physical form factor and pin compatibility)
• Mounting Type: Through Hole (PCB assembly method)
• RoHS Status: ROHS3 Compliant (environmental compliance)

All substitute parts listed maintain identical specifications across these parameters, ensuring direct functional and mechanical interchangeability.

Parameter Comparison

Engineering Selection Recommendations

All listed substitute parts—H11A2XG, H11A3XG, and TIL116XG—are qualified equivalents for the H11A3G based on identical electrical and mechanical specifications. Selection among these parts may be based on:

• Inventory Availability: TIL116XG has the highest stock level at 1126 units, followed by H11A3G at 1122 units, H11A2XG at 1081 units, and H11A3XG at 993 units.
• Product Status: All parts maintain active production status, ensuring long-term supply continuity.
• Compliance Certifications: All parts are ROHS3 compliant, REACH unaffected, and carry MSL Level 1 (unlimited moisture sensitivity), meeting environmental and regulatory requirements for industrial and commercial applications.

Frequently Asked Questions (FAQ)

Q: Can H11A2XG, H11A3XG, or TIL116XG be used as direct replacements for H11A3G?

A: Yes. All three parts are parametric equivalents with identical electrical characteristics, output configuration, isolation voltage, current transfer ratio, and 6-DIP package specifications. Direct pin-for-pin substitution is supported.

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

A: No. All parts share the same 7.5Vpk isolation voltage, 50mA maximum output current per channel, and 30V maximum output voltage rating.

Q: Do all substitute parts support the same operating temperature range?

A: Yes. All parts operate across the -55°C to 100°C temperature range, ensuring compatibility in equivalent thermal environments.

Q: Are there packaging or mounting differences?

A: No. All parts use the 6-DIP (0.400", 10.16mm) through-hole package with identical pin configuration and PCB assembly requirements.

Q: What compliance certifications apply to all substitute parts?

A: All parts are ROHS3 compliant, REACH unaffected, and carry MSL Level 1 (unlimited) moisture sensitivity rating, meeting environmental and regulatory standards for industrial applications.

Q: Which part should be selected based on availability?

A: TIL116XG offers the highest current inventory at 1126 units. However, all parts maintain active production status, supporting long-term sourcing flexibility.