SFH 487-2 Equivalent & Substitute Parts

Part Overview

The SFH 487-2 is an infrared (IR) emitter operating at 880nm wavelength, designed for through-hole radial mounting applications. This component is classified as obsolete, necessitating identification of active equivalent parts for ongoing design requirements and production continuity. The SFH 487-2 delivers 20mW/sr radiant intensity at 100mA forward current with a 40° viewing angle and operates across the temperature range of -40°C to 100°C.

Substiute Parts

SFH 487-2

ams-OSRAM USA INC.In Stock: 895SFH 487-2 Datasheet

Current PartRFQ

VTE1291-2H

Excelitas TechnologiesIn Stock: 4838VTE1291-2H Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the SFH 487-2 is determined by the following critical parameters:

Mandatory Matching Parameters:

• Wavelength: 880nm
• Forward Current (If Max): 100mA
• Forward Voltage (Vf Typ): 1.5V
• Mounting Type: Through Hole
• Package Type: Radial
• Operating Temperature Range: -40°C ~ 100°C
• RoHS Compliance: ROHS3 Compliant

Variable Parameters (Allowable Differences):

• Radiant Intensity (Ie Min @ If): May exceed the minimum specification of 20mW/sr
• Viewing Angle: May differ from 40° based on application requirements

The VTE1291-2H qualifies as a substitute because it maintains all mandatory matching parameters while providing enhanced radiant intensity (65mW/sr @ 100mA) and a narrower viewing angle (24°). Both components are ROHS3 compliant, operate within the same temperature range, and share identical electrical characteristics for forward current and voltage.

Parameter Comparison

Engineering Selection Recommendations

The VTE1291-2H from Excelitas Technologies is a direct substitute for the obsolete SFH 487-2. Both components maintain identical electrical specifications (100mA forward current, 1.5V forward voltage) and operate across the same temperature range (-40°C to 100°C). Both are ROHS3 compliant and REACH unaffected, meeting regulatory requirements.

The primary difference is the radiant intensity, where the VTE1291-2H provides 65mW/sr compared to the SFH 487-2's 20mW/sr at 100mA. This represents a performance enhancement and does not restrict substitution. The viewing angle differs (24° versus 40°), which may require optical design consideration depending on the application's field-of-view requirements.

The VTE1291-2H is currently in active production status with substantial inventory availability (4813 pieces), ensuring supply chain continuity for new designs and production runs.

Frequently Asked Questions (FAQ)

Q: Can the VTE1291-2H directly replace the SFH 487-2 in existing circuit designs?

A: Yes. The VTE1291-2H maintains identical forward current (100mA), forward voltage (1.5V), wavelength (880nm), and operating temperature range (-40°C to 100°C). Through-hole radial mounting is identical. No circuit modifications are required for electrical compatibility.

Q: What is the significance of the higher radiant intensity in the VTE1291-2H?

A: The VTE1291-2H delivers 65mW/sr compared to the SFH 487-2's 20mW/sr at 100mA. This increased radiant intensity provides greater optical output. Applications requiring the minimum 20mW/sr specification will operate within acceptable parameters with the VTE1291-2H.

Q: How does the viewing angle difference affect substitution?

A: The SFH 487-2 has a 40° viewing angle while the VTE1291-2H has a 24° viewing angle. The narrower angle of the VTE1291-2H concentrates optical output over a smaller field of view. Applications requiring wide-angle dispersion may require optical design review, but the component remains electrically compatible.

Q: Are both components RoHS compliant?

A: Yes. Both the SFH 487-2 and VTE1291-2H are ROHS3 compliant and REACH unaffected, meeting current regulatory requirements for electronic components.

Q: What is the packaging difference between these components?

A: Both components use through-hole radial packaging. The SFH 487-2 is supplied in standard packaging, while the VTE1291-2H is supplied in bulk packaging. Physical dimensions and pin configuration remain compatible for PCB mounting.

Q: Why is the SFH 487-2 classified as obsolete?

A: The SFH 487-2 is no longer in active production. The VTE1291-2H represents the active equivalent for ongoing design and production requirements, ensuring supply chain continuity and access to current manufacturing standards.