IR204-A Infrared Emitter 940nm - Equivalent & Substitute Parts

Part Overview

The IR204-A is an active-status infrared (IR) emitter manufactured by Everlight Electronics Co Ltd, designed for applications requiring 940nm wavelength emission in radial through-hole configurations. This component operates at 1.2V forward voltage with a maximum DC forward current of 100mA and delivers 4mW/sr radiant intensity at 20mA with a 35° viewing angle. The part is RoHS3 compliant and carries unlimited moisture sensitivity level (MSL 1), making it suitable for standard industrial and consumer applications. Equivalent and substitute parts are identified when design requirements, supply constraints, or application-specific parameters necessitate alternative component selection while maintaining functional compatibility.

Substiute Parts

IR204-A

Everlight Electronics Co LtdIn Stock: 150677IR204-A Datasheet

Current PartRFQ

WP710A10F3BT

KingbrightIn Stock: 2890WP710A10F3BT Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the IR204-A is determined by strict alignment with the following critical parameters:

Primary Substitution Criteria:

• Wavelength: 940nm (exact match required)
• Voltage - Forward (Vf) Typical: 1.2V (exact match required)
• Operating Temperature Range: -40°C to 85°C minimum (equal or wider range acceptable)
• Mounting Type: Through Hole (exact match required)
• Package / Case: Radial configuration (exact match required)
• RoHS Status: ROHS3 Compliant (compliance required)

Secondary Compatibility Parameters:

• Current - DC Forward (If) Maximum: Substitute must support application current requirements
• Radiant Intensity (Ie) Minimum @ If: Substitute must meet or exceed application intensity requirements
• Viewing Angle: Substitute angle must be compatible with optical design constraints

The WP710A10F3BT from Kingbright satisfies all primary substitution criteria. It matches the 940nm wavelength, 1.2V forward voltage, -40°C to 85°C operating temperature range, through-hole mounting type, and radial package configuration. The substitute is RoHS3 compliant and carries MSL 1 rating. Secondary parameters differ: the WP710A10F3BT operates at a maximum 50mA forward current (lower than IR204-A's 100mA) and provides 12mW/sr radiant intensity at 20mA (higher than IR204-A's 4mW/sr), with a 30° viewing angle (narrower than IR204-A's 35°).

Parameter Comparison

Engineering Selection Recommendations

IR204-A Selection Criteria: The IR204-A remains the primary component choice for applications requiring maximum forward current capability up to 100mA, broader 35° viewing angle for wider optical coverage, or when the 4mW/sr radiant intensity specification is the design baseline. The part is active-status with full RoHS3 compliance and unlimited MSL rating, supporting standard manufacturing and storage conditions.

WP710A10F3BT Selection Criteria: The WP710A10F3BT serves as a substitute when design specifications accommodate a maximum forward current of 50mA or lower, when higher radiant intensity (12mW/sr @ 20mA) provides design margin, and when the narrower 30° viewing angle aligns with optical system requirements. The substitute is active-status with identical RoHS3 compliance and MSL 1 rating. Physical package differences (3mm diameter T-1 radial vs. standard radial) must be verified against PCB footprint and mechanical assembly constraints.

Both parts operate within the identical -40°C to 85°C temperature range and share 1.2V forward voltage and 940nm wavelength specifications, establishing functional equivalence within the stated parameter boundaries.

Frequently Asked Questions (FAQ)

Q: Can WP710A10F3BT directly replace IR204-A in all applications?

A: Direct substitution is valid only when the application current requirement does not exceed 50mA (the WP710A10F3BT maximum rating) and the 30° viewing angle accommodates the optical design. The higher radiant intensity (12mW/sr vs. 4mW/sr) provides additional margin. Physical package dimensions must be verified against PCB layout.

Q: What is the primary difference between these two parts?

A: The IR204-A supports higher forward current (100mA maximum) and broader viewing angle (35°), while the WP710A10F3BT delivers higher radiant intensity (12mW/sr) and operates at lower maximum current (50mA). Both share identical wavelength (940nm), forward voltage (1.2V), and operating temperature range (-40°C to 85°C).

Q: Are there compliance or regulatory differences between IR204-A and WP710A10F3BT?

A: Both parts are RoHS3 compliant, carry MSL 1 (unlimited) moisture sensitivity level, and share identical ECCN (EAR99) and HTSUS (8541.41.0000) classifications. No compliance differentiation exists between the two components.

Q: How do the package configurations differ?

A: The IR204-A uses a standard radial through-hole package, while the WP710A10F3BT specifies a 3mm diameter T-1 radial package. Both are through-hole mounted, but physical dimensions and PCB footprint compatibility must be confirmed before substitution.

Q: Can I use WP710A10F3BT if my circuit requires 100mA operation?

A: No. The WP710A10F3BT is rated for a maximum DC forward current of 50mA. Operating at 100mA would exceed the component's electrical specification and is not permitted.

Q: What viewing angle consideration applies to substitution?

A: The IR204-A provides a 35° viewing angle, while WP710A10F3BT provides 30°. If the application requires wide-angle IR emission coverage, the narrower angle of the substitute may not be suitable. Verify optical system requirements before substitution.