H11A1 Optoisolator Transistor Detector - Equivalent & Substitute Parts

Part Overview

The H11A1 is a single-channel optoisolator with transistor output and base connection, manufactured by Isocom Components 2004 LTD. This component provides galvanic isolation up to 7.5Vpk and is designed for applications requiring DC input signal isolation with transistor-based output control. The H11A1 maintains active product status with 19,843 units in current inventory. Substitute parts are identified to support procurement flexibility, supply chain continuity, and packaging format options while maintaining identical electrical and mechanical performance.

Substiute Parts

H11A1

Isocom Components 2004 LTDIn Stock: 19893H11A1 Datasheet

Current PartRFQ

H11A1XSM

Isocom Components 2004 LTDIn Stock: 1130H11A1XSM Datasheet

Parametric EquivalentRFQ

TIL117XSM

Isocom Components 2004 LTDIn Stock: 1169TIL117XSM Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the H11A1 are qualified based on strict electrical and mechanical parameter matching. The following criteria determine substitution eligibility:

Critical Matching Parameters:

• Number of Channels: 1
• Voltage - Isolation: 7.5Vpk
• Current Transfer Ratio (Min): 50% @ 10mA
• Output Type: Transistor with Base
• Voltage - Output (Max): 30V
• Current - Output / Channel: 50mA
• Rise / Fall Time (Typ): 2µs, 2µs
• Vce Saturation (Max): 400mV
• Operating Temperature: -55°C ~ 100°C
• Package / Case: 6-SMD, Gull Wing
• Mounting Type: Surface Mount

The identified substitutes H11A1XSM and TIL117XSM meet all critical electrical parameters and mechanical specifications. Variations in packaging format (Tube vs. standard) and inventory levels do not affect functional equivalence.

Parameter Comparison

Engineering Selection Recommendations

All three parts—H11A1, H11A1XSM, and TIL117XSM—are active products with ROHS3 compliance and REACH unaffected status, suitable for current design implementations. Selection between these parts is determined by packaging and inventory requirements rather than electrical performance.

H11A1 is the primary specification with the highest inventory level (19,843 units), appropriate for high-volume production and standard procurement workflows.

H11A1XSM provides identical electrical performance in Tube packaging format with 1,087 units available, suitable for applications requiring tube-packaged components or alternative supply chain sourcing.

TIL117XSM represents the TIL117 series equivalent with matching electrical specifications and Tube packaging, with 1,151 units in inventory. This part supports cross-series substitution while maintaining full functional compatibility.

All parts carry MSL Level 1 (Unlimited) moisture sensitivity, eliminating moisture-related handling constraints. ECCN classification EAR99 and HTSUS code 8541.49.8000 apply uniformly across all substitutes.

Frequently Asked Questions (FAQ)

Q: Can H11A1XSM be used as a direct replacement for H11A1?

A: Yes. H11A1XSM is a parametric equivalent with identical electrical specifications, isolation voltage, current transfer ratio, output characteristics, and operating temperature range. The only difference is packaging format (Tube vs. standard). Both are suitable for the same circuit applications.

Q: What is the functional difference between H11A1 and TIL117XSM?

A: There is no functional difference. TIL117XSM meets all electrical and mechanical parameters of H11A1, including isolation voltage (7.5Vpk), current transfer ratio (50% @ 10mA), output type (Transistor with Base), and thermal operating range (-55°C ~ 100°C). The series designation differs, but performance is equivalent.

Q: Are all three parts suitable for the same PCB layout?

A: Yes. All three parts use identical 6-SMD Gull Wing surface mount packaging, enabling direct substitution on the same PCB without layout modifications.

Q: What does MSL Level 1 mean for these components?

A: MSL Level 1 (Unlimited) indicates these components have unlimited shelf life and do not require moisture-controlled storage or baking procedures prior to soldering. Standard handling practices are sufficient.

Q: Which part should I select for new designs?

A: Selection depends on supply chain and packaging preferences. H11A1 offers the highest inventory availability. H11A1XSM and TIL117XSM provide alternative sourcing with Tube packaging. All three are active products with equivalent performance.

Q: Are these parts RoHS compliant?

A: Yes. All three parts are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements for electronic component manufacturing and use.