SE1450-004 Infrared Emitter 935nm Equivalent & Substitute Parts

Part Overview

The SE1450-004 is an infrared (IR) emitter manufactured by Honeywell Sensing and Productivity Solutions, designed for 935nm wavelength applications with 50mA maximum forward current and 1.6V typical forward voltage. This component features a coaxial metal can package with a 24° viewing angle and operates across the temperature range of -55°C to 125°C.

The SE1450-004 is classified as obsolete. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production or maintenance requirements for systems utilizing this infrared emitter.

Substiute Parts

SE1450-004

Honeywell Sensing and Productivity SolutionsIn Stock: 1137SE1450-004 Datasheet

Current PartRFQ

OP165A

TT Electronics/Optek TechnologyIn Stock: 1710OP165A Datasheet

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OP165B

TT Electronics/Optek TechnologyIn Stock: 2836OP165B Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SE1450-004 is determined by the following critical parameters:

Primary Matching Criteria:

• Wavelength: 935nm (exact match required)
• Current - DC Forward (If) Max: 50mA (exact match required)
• Voltage - Forward (Vf) Typical: 1.6V (exact match required)
• Mounting Type: Through Hole (exact match required)

Secondary Compatibility Factors:

• Viewing Angle: The SE1450-004 specifies 24°; substitute parts with 18° viewing angle represent a narrower beam pattern and may affect optical system performance depending on application requirements
• Operating Temperature Range: The SE1450-004 operates -55°C to 125°C; substitute parts with -40°C to 100°C range have reduced low-temperature capability and reduced high-temperature capability
• Package Type: The SE1450-004 uses Coaxial Metal Can; substitute parts use T-1 package, which differs in physical form factor and may require mechanical redesign

The substitute parts OP165A and OP165B, both manufactured by TT Electronics/Optek Technology, match the primary electrical criteria (935nm wavelength, 50mA maximum forward current, 1.6V typical forward voltage, through-hole mounting). However, both substitutes differ in viewing angle (18° versus 24°), operating temperature range (-40°C to 100°C versus -55°C to 125°C), and package configuration (T-1 versus Coaxial Metal Can).

Parameter Comparison

Engineering Selection Recommendations

OP165A and OP165B Substitution Considerations:

Both OP165A and OP165B are active products manufactured by TT Electronics/Optek Technology and meet the core electrical specifications of the SE1450-004 (935nm wavelength, 50mA maximum forward current, 1.6V typical forward voltage). Both substitute parts are ROHS3 compliant and carry MSL 1 rating, indicating compliance with current environmental and moisture sensitivity standards.

Differences Requiring Evaluation:

1. Viewing Angle Reduction: Both substitutes feature an 18° viewing angle compared to the SE1450-004's 24° viewing angle. This represents a narrower beam pattern and will affect optical system performance. Applications requiring the wider 24° beam pattern may experience reduced optical coverage with these substitutes.

2. Operating Temperature Range Limitation: Both substitutes operate within -40°C to 100°C, compared to the SE1450-004's -55°C to 125°C range. Applications requiring operation below -40°C or above 100°C cannot use these substitutes.

3. Package Form Factor Change: The SE1450-004 uses a Coaxial Metal Can package, while both substitutes use T-1 package. This physical difference requires mechanical redesign of mounting and optical alignment structures.

4. Radiant Intensity Variation: OP165A specifies 1.95mW/cm² @ 20mA, while OP165B specifies 1.4mW/cm² @ 20mA. OP165A provides higher radiant intensity output.

Selection Guidance:

• OP165A is preferred over OP165B when higher radiant intensity output is beneficial, as it provides 1.95mW/cm² @ 20mA versus 1.4mW/cm² @ 20mA.
• Both substitutes are suitable only for applications operating within -40°C to 100°C temperature range and requiring 18° or narrower viewing angle.
• Mechanical redesign is required to accommodate the T-1 package transition from the Coaxial Metal Can package.

Frequently Asked Questions (FAQ)

Q: Can OP165A or OP165B directly replace SE1450-004 without any modifications?

A: Direct replacement without modifications is not possible. While the electrical specifications (wavelength, forward current, forward voltage) are identical, the package form factor differs (T-1 versus Coaxial Metal Can), requiring mechanical redesign of mounting structures and optical alignment systems.

Q: What is the significance of the 24° viewing angle on SE1450-004 versus the 18° viewing angle on OP165A and OP165B?

A: Viewing angle defines the beam divergence of the infrared emitter. The SE1450-004's 24° angle provides a wider beam pattern, while the 18° angle on substitutes provides a narrower, more focused beam. Applications designed for 24° beam coverage will experience reduced optical coverage area with 18° substitutes, potentially affecting detection range or coverage uniformity.

Q: Are OP165A and OP165B suitable for applications requiring operation below -40°C or above 100°C?

A: No. Both OP165A and OP165B are rated for -40°C to 100°C operating temperature range. The SE1450-004 supports -55°C to 125°C. Applications requiring operation outside the -40°C to 100°C range cannot use these substitutes.

Q: What is the difference between OP165A and OP165B?

A: Both parts share identical electrical specifications, wavelength, forward current, forward voltage, viewing angle, operating temperature range, and package type. The primary difference is radiant intensity: OP165A provides 1.95mW/cm² @ 20mA, while OP165B provides 1.4mW/cm² @ 20mA. OP165A delivers approximately 39% higher radiant intensity output.

Q: Are OP165A and OP165B RoHS compliant?

A: Yes. Both OP165A and OP165B are ROHS3 compliant, meeting current environmental regulations. The SE1450-004 is RoHS compliant. Both substitutes maintain compliance with modern environmental standards.

Q: What does MSL 1 (Unlimited) moisture sensitivity level mean?

A: MSL 1 indicates the component has unlimited shelf life and requires no special moisture control during storage or handling. Both the SE1450-004 and substitute parts (OP165A, OP165B) carry MSL 1 rating, meaning they do not require dry-pack storage or baking procedures prior to assembly.

Q: Can I use OP165B instead of OP165A to reduce costs?

A: OP165B has lower radiant intensity (1.4mW/cm² @ 20mA) compared to OP165A (1.95mW/cm² @ 20mA). Cost reduction must be evaluated against optical performance requirements. Applications requiring maximum optical output should use OP165A.