OP224K Infrared Emitter - Equivalent & Substitute Parts

Part Overview

The OP224K is an infrared (IR) emitter operating at 875nm wavelength, designed for applications requiring near-infrared light emission. Manufactured by TT Electronics/Optek Technology, this component features a 100mA maximum forward current rating and operates across an extended temperature range of -65°C to 125°C. The OP224K is classified as obsolete, necessitating identification of functionally equivalent alternatives for new designs and ongoing production requirements.

Substiute Parts

OP224K

TT Electronics/Optek TechnologyIn Stock: 1069OP224K Datasheet

Current PartRFQ

OP224

TT Electronics/Optek TechnologyIn Stock: 5884OP224 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

The OP224 is identified as the manufacturer-recommended substitute for the obsolete OP224K. Substitution eligibility is determined by the following critical parameters:

• Current Rating: Both parts support 100mA maximum forward current
• Viewing Angle: Both parts maintain 24° viewing angle
• Operating Temperature Range: Both parts operate across -65°C to 125°C
• Mounting Type: Both are surface mount components
• Compliance: Both maintain ROHS3 compliance and MSL 1 rating

Variations between the OP224K and OP224 exist in wavelength (875nm vs. 890nm), forward voltage (2V vs. 1.8V), radiant intensity (5mW/cm² vs. 3.5mW/cm²), and package form factor (Pill, Round vs. Mini-pill). These differences must be evaluated against specific application requirements.

Parameter Comparison

Engineering Selection Recommendations

The OP224 is the manufacturer-recommended substitute for the obsolete OP224K. Both components maintain identical current ratings, viewing angles, and operating temperature ranges, with full ROHS3 compliance and MSL 1 ratings. The OP224 carries active product status, ensuring ongoing availability and supply chain continuity.

Selection of the OP224 as a replacement requires evaluation of application-specific tolerance to wavelength shift (875nm to 890nm), forward voltage reduction (2V to 1.8V), and radiant intensity variation (5mW/cm² to 3.5mW/cm²). The package form factor transition from Pill, Round to Mini-pill necessitates mechanical layout verification.

Frequently Asked Questions (FAQ)

Q: Can the OP224 directly replace the OP224K in existing designs?

A: The OP224 shares identical current ratings, viewing angles, and operating temperature ranges with the OP224K. However, differences in wavelength, forward voltage, and radiant intensity require application-level validation. The package form factor change from Pill, Round to Mini-pill requires mechanical layout assessment.

Q: What is the wavelength difference between these parts?

A: The OP224K operates at 875nm, while the OP224 operates at 890nm. This 15nm shift may affect spectral matching in wavelength-sensitive applications.

Q: How does the radiant intensity differ?

A: The OP224K provides 5mW/cm² @ 50mA, while the OP224 provides 3.5mW/cm² @ 50mA. Applications requiring specific optical power output must account for this 30% reduction.

Q: Are there compliance differences between these parts?

A: Both the OP224K and OP224 maintain ROHS3 compliance, MSL 1 rating, and identical operating temperature ranges of -65°C to 125°C.

Q: What is the package difference?

A: The OP224K uses a Pill, Round package, while the OP224 uses a Mini-pill package. PCB layout and mechanical clearances must be verified for compatibility.

Q: Why is the OP224K obsolete?

A: The OP224K is classified as obsolete by the manufacturer. The OP224 is the active product status alternative, ensuring continued availability and support.