GA1A2S100SS Equivalent & Substitute Parts

Part Overview

The GA1A2S100SS is an optical ambient light sensor manufactured by Sharp Microelectronics, designed to detect ambient light at 555nm wavelength. This component operates as a current-output sensor with radial through-hole mounting and a 3-lead package configuration. The product is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing system support and new design implementations where this sensor type is required.

Substiute Parts

GA1A2S100SS

Sharp MicroelectronicsIn Stock: 719GA1A2S100SS Datasheet

Current PartRFQ

EAALSDIC03RDLA0

Everlight Electronics Co LtdIn Stock: 938EAALSDIC03RDLA0 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the GA1A2S100SS is determined by the following critical parameters:

• Sensor Type & Function: Ambient light detection capability
• Wavelength Range: 555nm detection band (±5nm tolerance acceptable for ambient sensing applications)
• Output Configuration: Current or voltage output compatibility with circuit design
• Supply Voltage Range: Must operate within or encompass the 2.7V ~ 3.6V requirement
• Temperature Operating Range: Must support -40°C ~ 85°C minimum
• Mounting & Package: Through-hole radial configuration for mechanical compatibility
• Lead Count: 3-lead radial package for PCB footprint compatibility

The EAALSDIC03RDLA0 from Everlight Electronics Co Ltd qualifies as a substitute based on matching ambient light sensor functionality, similar wavelength specification (550nm), compatible through-hole radial mounting, and overlapping operating temperature range.

Parameter Comparison

Engineering Selection Recommendations

The EAALSDIC03RDLA0 is an active product with current manufacturing availability, addressing the obsolescence status of the GA1A2S100SS. Both components share identical operating temperature ranges (-40°C ~ 85°C) and moisture sensitivity classifications (MSL 1).

The primary design consideration is the output type difference: the GA1A2S100SS provides current output, while the EAALSDIC03RDLA0 provides voltage output. Circuit redesign or signal conditioning may be required to accommodate this output configuration change.

The EAALSDIC03RDLA0 supply voltage range (1.8V ~ 5.5V) encompasses the GA1A2S100SS requirement (2.7V ~ 3.6V), providing broader operational flexibility. Wavelength specifications are closely matched (550nm vs 555nm), with both sensors targeting the green spectral region for ambient light detection.

The EAALSDIC03RDLA0 carries RoHS3 compliance certification, supporting environmental and regulatory requirements for modern applications.

Frequently Asked Questions (FAQ)

Q: Can the EAALSDIC03RDLA0 directly replace the GA1A2S100SS without circuit modifications?

A: Direct mechanical and electrical substitution requires circuit adaptation due to output type differences. The GA1A2S100SS outputs current, while the EAALSDIC03RDLA0 outputs voltage. Signal conditioning or transimpedance amplifier removal may be necessary depending on the receiving circuit design.

Q: Are the wavelength specifications compatible?

A: Yes. The 550nm wavelength of the EAALSDIC03RDLA0 and 555nm of the GA1A2S100SS are within acceptable tolerance for ambient light sensing applications, both targeting the green spectral region where human eye sensitivity peaks.

Q: What are the package compatibility considerations?

A: Both components use through-hole radial mounting with 3-lead configurations. PCB footprint compatibility should be verified against the specific supplier device package specifications, as radial lead spacing may vary between manufacturers.

Q: Is the supply voltage range compatible?

A: The EAALSDIC03RDLA0 supply range (1.8V ~ 5.5V) fully encompasses the GA1A2S100SS requirement (2.7V ~ 3.6V). No voltage supply modifications are necessary.

Q: What certifications apply to the substitute part?

A: The EAALSDIC03RDLA0 is RoHS3 compliant and carries MSL 1 (Unlimited) moisture sensitivity classification, matching the environmental standards of the original component.