OP298AB Infrared Emitter - Equivalent & Substitute Parts

Part Overview

The OP298AB is an infrared (IR) emitter manufactured by TT Electronics/Optek Technology, designed for applications requiring 875nm wavelength emission at 200mA forward current. This component operates at 2V forward voltage with a radiant intensity of 4.6mW/cm² at 100mA and a 25° viewing angle in radial through-hole configuration.

The OP298AB is classified as obsolete. Identifying 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

OP298AB

TT Electronics/Optek TechnologyIn Stock: 832OP298AB Datasheet

Current PartRFQ

OP298AA

TT Electronics/Optek TechnologyIn Stock: 754OP298AA Datasheet

MFR RecommendedRFQ

OP298AA

TT Electronics/Optek TechnologyIn Stock: 754OP298AA Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the OP298AB is determined by strict equivalence across the following electrical and mechanical parameters:

• Wavelength: 875nm (exact match required)
• Forward current rating: 200mA (exact match required)
• Forward voltage: 2V typical (exact match required)
• Radiant intensity: 4.6mW/cm² @ 100mA (exact match required)
• Viewing angle: 25° (exact match required)
• Mounting type: Through Hole (exact match required)
• Package configuration: Radial (exact match required)
• Operating temperature range: -40°C ~ 100°C (exact match required)

The OP298AA meets all substitution criteria as a direct equivalent to the OP298AB. Both components share identical electrical specifications, optical characteristics, and mechanical form factors within the OP290 series.

Parameter Comparison

Engineering Selection Recommendations

The OP298AA is the direct substitute for the OP298AB. Both components are manufactured by TT Electronics/Optek Technology and maintain identical electrical, optical, and mechanical specifications. The primary distinction is product status: the OP298AB is obsolete while the OP298AA is active.

For new designs and production applications, the OP298AA should be selected as it maintains full compliance with ROHS3 and REACH requirements. The OP298AA is available in bulk packaging and carries an MSL rating of 1 (Unlimited), indicating standard moisture handling requirements for through-hole components.

Both parts share the same ECCN (EAR99) and HTSUS classification, ensuring consistent regulatory and trade compliance across substitution.

Frequently Asked Questions (FAQ)

Q: Can the OP298AA directly replace the OP298AB in existing designs?

A: Yes. The OP298AA is electrically and mechanically identical to the OP298AB. All electrical parameters (wavelength, forward current, forward voltage, radiant intensity), optical characteristics (viewing angle), and mechanical form factors (radial through-hole package) are equivalent. No circuit modifications are required.

Q: What is the difference between the OP298AB and OP298AA?

A: The components are functionally identical. The OP298AB is classified as obsolete, while the OP298AA is active. The OP298AA is supplied in bulk packaging with an MSL rating of 1 (Unlimited).

Q: Are there any compliance differences between these parts?

A: No. Both the OP298AB and OP298AA are ROHS3 compliant, REACH unaffected, and classified under ECCN EAR99. Regulatory and trade compliance is equivalent.

Q: What packaging options are available?

A: The OP298AB was supplied in standard packaging. The OP298AA is available in bulk packaging configuration.

Q: Can I use the OP298AA in applications originally designed for the OP298AB?

A: Yes. The OP298AA meets all electrical and mechanical requirements of the OP298AB specification. Direct substitution is appropriate for all applications within the specified operating temperature range of -40°C to 100°C.