SE3470-002 Infrared Emitter 880nm Equivalent & Substitute Parts

Part Overview

The SE3470-002 is an infrared (IR) emitter manufactured by Honeywell Sensing and Productivity Solutions, designed for 880nm wavelength applications requiring 100mA forward current in a TO-46-2 metal can package. This component operates across an extended temperature range of -55°C to 125°C and is classified as obsolete. Due to its obsolete status and limited availability relative to active alternatives, equivalent substitute parts are necessary for new designs and ongoing production requirements.

Substiute Parts

SE3470-002

Honeywell Sensing and Productivity SolutionsIn Stock: 788SE3470-002 Datasheet

Current PartRFQ

OP233W

TT Electronics/Optek TechnologyIn Stock: 1894OP233W Datasheet

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OP266W

TT Electronics/Optek TechnologyIn Stock: 3934OP266W Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SE3470-002 are identified based on the following critical parameters that determine functional equivalence:

Primary Matching Criteria:

• Type: Infrared (IR) Emitter
• Wavelength: 880nm or 890nm (near-infrared spectrum compatibility)
• Current - DC Forward (If) (Max): 100mA or lower
• Voltage - Forward (Vf) (Typ): 1.8V to 2V (compatible operating voltage range)
• Package / Case: TO-46-2 Metal Can or equivalent through-hole package
• Mounting Type: Through Hole
• Operating Temperature Range: Must support minimum -40°C to 100°C

Compliance Considerations:

• RoHS Status: RoHS3 Compliant or RoHS Compliant
• Moisture Sensitivity Level: MSL 1 (Unlimited)
• ECCN: EAR99 (consistent export classification)

The substitute parts listed below meet these criteria with variations in specific parameters that do not prevent functional substitution in typical applications.

Parameter Comparison

Engineering Selection Recommendations

OP233W Selection Criteria:

The OP233W is the closest functional equivalent to the SE3470-002. Both components share identical current ratings (100mA maximum), compatible voltage characteristics (1.9V vs. 2V), and the same TO-46-2 metal can package. The wavelength difference of 10nm (880nm to 890nm) falls within the near-infrared spectrum and is acceptable for most applications utilizing IR emitters in this range. The OP233W operates across an extended lower temperature limit (-65°C vs. -55°C) and maintains the same upper temperature boundary (125°C). The component is currently in active production status with ROHS3 compliance, ensuring long-term availability and regulatory alignment. The primary trade-off is a narrower viewing angle (50° vs. 90°), which may require circuit design consideration depending on application geometry.

OP266W Selection Criteria:

The OP266W serves as an alternative for applications where current requirements can be reduced to 50mA. This component maintains the 90° viewing angle matching the SE3470-002 and operates at a lower forward voltage (1.8V). The T-1 package differs from the TO-46-2 metal can, requiring mechanical redesign of the mounting interface. The operating temperature range (-40°C to 100°C) is narrower than the SE3470-002, making this option unsuitable for applications requiring extended low-temperature operation below -40°C. The OP266W is appropriate for new designs where current reduction is acceptable and package form factor can be accommodated.

Compliance and Availability:

Both substitute parts carry ROHS3 compliance certification, exceeding the RoHS compliance of the obsolete SE3470-002. Both maintain MSL 1 (Unlimited) moisture sensitivity classification. Active production status of both substitutes ensures supply chain continuity and eliminates obsolescence risk associated with the SE3470-002.

Frequently Asked Questions (FAQ)

Q: Can OP233W directly replace SE3470-002 in existing designs?

A: OP233W is mechanically and electrically compatible with SE3470-002 in most applications. Both use TO-46-2 metal can packages and support 100mA forward current. The 10nm wavelength difference (880nm to 890nm) is within acceptable tolerance for near-infrared applications. The primary design consideration is the narrower viewing angle (50° vs. 90°), which may affect optical performance depending on application requirements.

Q: What are the limitations of OP266W as a substitute?

A: OP266W differs in three critical aspects: (1) reduced maximum forward current (50mA vs. 100mA), requiring circuit redesign if full current capacity is required; (2) different package form factor (T-1 vs. TO-46-2 metal can), necessitating mechanical redesign of the mounting interface; (3) narrower operating temperature range (-40°C to 100°C vs. -55°C to 125°C), making it unsuitable for applications requiring extended low-temperature operation.

Q: Are the wavelength differences between 880nm and 890nm significant?

A: The 10nm difference between SE3470-002 (880nm) and both substitute parts (890nm) represents a 1.1% variation within the near-infrared spectrum. For most IR emitter applications, this difference is not functionally significant. However, applications with wavelength-specific optical filters or detectors tuned to 880nm may require evaluation of spectral response characteristics.

Q: What is the impact of the viewing angle difference between OP233W and SE3470-002?

A: SE3470-002 provides a 90° viewing angle, while OP233W provides a 50° viewing angle. This represents a narrower radiation pattern for OP233W. Applications requiring wide-angle IR emission may require circuit modifications or alternative optical design to compensate for the reduced viewing angle.

Q: Are both substitute parts suitable for high-temperature applications?

A: Both substitute parts support the upper temperature limit of 125°C, matching SE3470-002. OP233W extends the lower temperature limit to -65°C, exceeding SE3470-002 capability. OP266W operates to -40°C minimum, which is adequate for standard industrial applications but insufficient for extended low-temperature environments.

Q: What compliance advantages do the substitute parts offer?

A: Both OP233W and OP266W carry ROHS3 compliance certification, representing current regulatory standards. SE3470-002 carries RoHS compliance, which is an earlier standard. Both substitute parts maintain MSL 1 (Unlimited) moisture sensitivity classification, identical to the main part. Active production status of both substitutes eliminates obsolescence risk.

Q: Can OP233W and OP266W be used interchangeably?

A: OP233W and OP266W are not interchangeable due to significant differences in current rating (100mA vs. 50mA), package form factor (TO-46-2 vs. T-1), viewing angle (50° vs. 90°), and operating temperature range. Selection between these parts depends on specific application requirements for current capacity, optical geometry, and temperature environment.