OP166C Infrared Emitter - Equivalent & Substitute Parts

Part Overview

The OP166C 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, making identification of active equivalent parts essential for ongoing production and maintenance applications. The OP166C delivers 50mA maximum forward current with 1.6V typical forward voltage and 0.85mW/cm² radiant intensity at 20mA, suitable for short-range IR transmission applications requiring 18° viewing angle characteristics.

Substiute Parts

OP166C

TT Electronics/Optek TechnologyIn Stock: 1023OP166C Datasheet

Current PartRFQ

OP165C

TT Electronics/Optek TechnologyIn Stock: 1886OP165C Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the OP166C is determined by strict equivalence across the following electrical and mechanical parameters:

• Wavelength: 935nm (exact match required)
• Maximum forward current: 50mA (exact match required)
• Typical forward voltage: 1.6V (exact match required)
• Radiant intensity specification: 0.85mW/cm² @ 20mA (exact match required)
• Viewing angle: 18° (exact match required)
• Package type: T-1 through-hole (exact match required)
• Operating temperature range: -40°C ~ 100°C (exact match required)

The OP165C meets all substitution criteria as an active equivalent part manufactured by the same supplier (TT Electronics/Optek Technology) with identical electrical performance and mechanical configuration.

Parameter Comparison

Engineering Selection Recommendations

The OP165C is the direct equivalent for OP166C replacement. Both components are manufactured by TT Electronics/Optek Technology and share identical electrical specifications and mechanical configuration. The OP165C maintains active product status, ensuring continued availability and supply chain reliability compared to the obsolete OP166C.

Both parts carry ROHS3 compliance and REACH unaffected status, meeting current environmental and regulatory requirements. Moisture sensitivity level 1 (unlimited) indicates no special storage or handling requirements for either component.

Frequently Asked Questions (FAQ)

Q: Can OP165C directly replace OP166C in existing designs? A: Yes. The OP165C is electrically and mechanically identical to OP166C across all specified parameters including wavelength, forward current, forward voltage, radiant intensity, viewing angle, and T-1 through-hole package configuration.

Q: What is the primary difference between OP166C and OP165C? A: The OP166C is classified as obsolete, while OP165C maintains active product status. Both components are functionally equivalent.

Q: Are there any compliance differences between these parts? A: No. Both OP166C and OP165C carry identical RoHS3 compliance, REACH unaffected status, and moisture sensitivity level 1 (unlimited) ratings.

Q: Does the T-1 package remain the same for both parts? A: Yes. Both components use T-1 through-hole package configuration with identical mechanical dimensions and mounting requirements.

Q: Are there inventory considerations for selecting between these parts? A: OP165C is available in higher inventory quantities (1782 pcs) compared to OP166C (921 pcs), with OP165C offered in bulk packaging.