H22A1 Optical Sensor Equivalent & Substitute Parts

Part Overview

The H22A1 is an optical sensor manufactured by onsemi, designed as a through-beam phototransistor with slotted configuration and PC pins. This component operates with a 0.118" (3mm) sensing distance and provides unamplified output. The product is currently classified as obsolete, making identification of equivalent parts essential for system maintenance, repair, and legacy design support.

Substiute Parts

H22A1

onsemiIn Stock: 6158H22A1 Datasheet

Current PartRFQ

H22A1

onsemiIn Stock: 6158H22A1 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the H22A1 optical sensor is determined by strict alignment of the following critical parameters:

Electrical Characteristics:

• Output configuration must be phototransistor (unamplified)
• Maximum collector current (Ic) of 3 mA
• Maximum DC forward current (If) of 60 mA
• Collector-emitter breakdown voltage of 30 V
• Response time specifications of 8µs and 50µs

Mechanical & Optical Specifications:

• Sensing distance of 0.118" (3mm)
• Through-beam sensing method
• Slotted package configuration with PC pins
• Through-hole mounting with flange

Environmental & Compliance:

• Operating temperature range of -55°C to 100°C
• Moisture sensitivity level 1 (unlimited)
• REACH unaffected status
• ECCN EAR99 classification

Only components matching all specified parameters across electrical, mechanical, optical, and environmental categories qualify as direct substitutes.

Parameter Comparison

Engineering Selection Recommendations

The H22A1 is classified as an obsolete product. Component selection for replacement applications must prioritize parts with identical electrical ratings, mechanical configuration, and environmental specifications as listed in the parameter comparison table.

Compliance certifications including REACH unaffected status and ECCN EAR99 classification are maintained across equivalent parts. Moisture sensitivity level 1 (unlimited) indicates no special handling requirements during storage or assembly.

The through-hole flange mounting and slotted PC pin configuration are critical for mechanical compatibility in legacy circuit board designs. Substitutes must maintain identical package geometry to ensure proper fit within existing mechanical assemblies.

Frequently Asked Questions (FAQ)

Q: What makes a part a direct substitute for the H22A1?

A: A direct substitute must match all specified parameters: 0.118" (3mm) through-beam sensing distance, phototransistor output configuration, 3 mA maximum collector current, 60 mA maximum DC forward current, 30 V collector-emitter breakdown voltage, 8µs and 50µs response times, -55°C to 100°C operating temperature range, through-hole flange mounting, and slotted PC pin package configuration.

Q: Can I use a different sensing distance or output type?

A: No. The sensing distance of 0.118" (3mm) and phototransistor output configuration are fundamental to the H22A1's function. Deviations from these specifications result in incompatible performance characteristics and circuit behavior.

Q: Are there packaging considerations for board-level integration?

A: Yes. The H22A1 uses through-hole flange mounting with slotted PC pins. Mechanical compatibility requires identical package geometry. PCB footprint and mounting hole spacing must match the original design specifications.

Q: What is the significance of the obsolete product status?

A: Obsolete status indicates the H22A1 is no longer manufactured. Equivalent parts must be sourced from existing inventory or alternative suppliers offering identical specifications. Compliance with original electrical and mechanical parameters is essential for system reliability.

Q: Does REACH unaffected status affect substitution?

A: REACH unaffected status applies to the H22A1 and equivalent parts. This classification does not restrict substitution but confirms regulatory compliance for both the original and substitute components.