OP298AC Infrared Emitter - Equivalent & Substitute Parts

Part Overview

The OP298AC is an infrared (IR) emitter manufactured by TT Electronics/Optek Technology, designed for applications requiring 875nm wavelength emission at 200mA forward current. This component features a radial through-hole package with a 25° viewing angle and operates across the -40°C to 100°C temperature range.

The OP298AC is classified as obsolete. Locating equivalent substitute parts is necessary to maintain design continuity and ensure component availability for new production runs, repairs, and system upgrades where this emitter is specified.

Substiute Parts

OP298AC

TT Electronics/Optek TechnologyIn Stock: 962OP298AC Datasheet

Current PartRFQ

OP298AA

TT Electronics/Optek TechnologyIn Stock: 754OP298AA Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the OP298AC is determined by strict equivalence across the following critical parameters:

• Wavelength: 875nm (exact match required)
• Current Rating: 200mA maximum DC forward current (exact match required)
• Forward Voltage: 2V typical (exact match required)
• Viewing Angle: 25° (exact match required)
• Package Type: Radial through-hole (exact match required)
• Operating Temperature Range: -40°C to 100°C (exact match required)
• Compliance: ROHS3 and REACH status (exact match required)

The OP298AA qualifies as a direct substitute based on matching all critical electrical and mechanical parameters. Both components share identical wavelength, current rating, forward voltage, viewing angle, package configuration, and temperature specifications. The primary distinction is the radiant intensity specification and product status classification.

Parameter Comparison

Engineering Selection Recommendations

The OP298AA is the qualified substitute for the obsolete OP298AC. Both components maintain identical electrical specifications across wavelength, forward current, forward voltage, and viewing angle. Both satisfy ROHS3 and REACH compliance requirements.

The OP298AA carries active product status, ensuring ongoing availability and supply chain continuity. The OP298AC is obsolete and should not be specified for new designs or production.

The radiant intensity difference (6.5mW/cm² for OP298AC versus 4.6mW/cm² for OP298AA at 100mA) reflects a specification variance within the same product family. Component selection should account for application-specific intensity requirements.

Frequently Asked Questions (FAQ)

Q: Can the OP298AA directly replace the OP298AC in existing designs?

A: Yes. The OP298AA matches all critical electrical and mechanical parameters of the OP298AC: wavelength (875nm), forward current (200mA), forward voltage (2V), viewing angle (25°), package type (radial through-hole), and operating temperature range (-40°C to 100°C). Both components are ROHS3 compliant and REACH unaffected.

Q: What is the significance of the radiant intensity difference between these parts?

A: The OP298AC specifies 6.5mW/cm² radiant intensity at 100mA, while the OP298AA specifies 4.6mW/cm² at the same current. This difference reflects manufacturing variance within the OP290 series. Applications sensitive to emission intensity should evaluate whether the lower intensity of the OP298AA meets functional requirements.

Q: Why is the OP298AC classified as obsolete?

A: The OP298AC has been discontinued by the manufacturer. The OP298AA, as an active product within the same series, represents the current production equivalent.

Q: Are there packaging differences between these parts?

A: Both components use radial through-hole packages. The OP298AC is supplied in standard packaging, while the OP298AA is supplied in bulk packaging. This distinction does not affect electrical or mechanical compatibility.

Q: What compliance certifications apply to both parts?

A: Both the OP298AC and OP298AA are ROHS3 compliant and REACH unaffected. No additional compliance documentation is required for substitution.