OP166D Infrared Emitter 935nm Equivalent & Substitute Parts

Part Overview

The OP166D is an infrared (IR) emitter operating at 935nm wavelength, designed for through-hole mounting in T-1 package configuration. This component is classified as obsolete, necessitating identification of active equivalent parts to maintain design continuity and ensure supply chain availability. The OP166D specifications define a 50mA maximum forward current device with 1.6V typical forward voltage and 18° viewing angle, suitable for IR transmission applications requiring near-infrared wavelength performance.

Substiute Parts

OP166D

TT Electronics/Optek TechnologyIn Stock: 1023OP166D Datasheet

Current PartRFQ

OP165D

TT Electronics/Optek TechnologyIn Stock: 1060OP165D Datasheet

MFR RecommendedRFQ

OP165D

TT Electronics/Optek TechnologyIn Stock: 1060OP165D Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the OP166D is determined by electrical and mechanical parameter equivalence across the infrared emitter category. The primary substitution criterion is the OP165D, which maintains identical specifications across all critical parameters: 935nm wavelength, 50mA maximum forward current, 1.6V typical forward voltage, 0.28mW/cm² radiant intensity at 20mA, 18° viewing angle, T-1 package configuration, and through-hole mounting type. Operating temperature range, RoHS3 compliance, and MSL rating remain consistent between the main part and substitute.

The key differentiator is product status: OP166D is obsolete while OP165D is active, making OP165D the direct functional equivalent for new designs and ongoing production requirements.

Parameter Comparison

Engineering Selection Recommendations

The OP165D is the direct substitute for OP166D applications. Both components are manufactured by TT Electronics/Optek Technology and share identical electrical and mechanical specifications. The OP165D holds active product status, ensuring continued availability and supply chain support, whereas the OP166D is obsolete. Both parts maintain ROHS3 compliance and REACH unaffected status, satisfying regulatory requirements for new designs and production environments. The OP165D is suitable for direct replacement in existing OP166D circuit implementations without design modification.

Frequently Asked Questions (FAQ)

Q: Can OP165D directly replace OP166D in existing designs? A: Yes. The OP165D is electrically and mechanically equivalent to OP166D across all specified parameters, including wavelength, forward current, forward voltage, radiant intensity, viewing angle, package type, and operating temperature range.

Q: What is the primary reason for substitution? A: OP166D is classified as obsolete. OP165D is the active equivalent part from the same manufacturer, ensuring supply availability and production continuity.

Q: Are there any compliance differences between OP166D and OP165D? A: No. Both parts are ROHS3 compliant, REACH unaffected, and carry identical MSL ratings of 1 (Unlimited).

Q: Does the T-1 package remain the same for both parts? A: Yes. Both OP166D and OP165D use T-1 through-hole package configuration, requiring no PCB layout modifications.

Q: Are the electrical characteristics identical? A: Yes. Maximum forward current (50mA), typical forward voltage (1.6V), wavelength (935nm), radiant intensity (0.28mW/cm² @ 20mA), and viewing angle (18°) are identical between both parts.