SD1440-002L Equivalent & Substitute Parts Reference

Part Overview

The SD1440-002L is a phototransistor optical sensor manufactured by Honeywell Sensing and Productivity Solutions, designed for 935nm wavelength detection in top view coaxial configuration with metal can packaging. This component is classified as obsolete, necessitating identification of equivalent substitute parts for ongoing applications requiring 935nm or near-infrared phototransistor functionality. Substitute parts must maintain compatibility across electrical specifications, mounting characteristics, and operating environmental parameters.

Substiute Parts

SD1440-002L

Honeywell Sensing and Productivity SolutionsIn Stock: 1058SD1440-002L Datasheet

Current PartRFQ

LTR-3208E

Lite-On Inc.In Stock: 39100LTR-3208E Datasheet

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OP516A

TT Electronics/Optek TechnologyIn Stock: 9048OP516A Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SD1440-002L are identified based on strict alignment with the following critical parameters:

Primary Matching Criteria:

• Wavelength specification (935nm or 940nm near-infrared range)
• Package type (Coaxial, Metal Can or equivalent form factor)
• Mounting method (Through Hole)
• Orientation (Top View)
• Voltage rating (30V Collector-Emitter Breakdown minimum)

Secondary Compatibility Factors:

• Dark current specification (100nA maximum)
• Operating temperature range (minimum -55°C to 125°C coverage)
• Power dissipation capability (minimum 75mW)
• RoHS compliance status

Two substitute parts meet these criteria with documented electrical and mechanical compatibility to the SD1440-002L.

Parameter Comparison

Engineering Selection Recommendations

OP516A - Primary Substitute:

The OP516A from TT Electronics/Optek Technology is the closest functional equivalent to the SD1440-002L. Both components share identical wavelength specification (935nm), package configuration (Coaxial, Metal Can), voltage rating (30V), mounting type (Through Hole), and operating temperature range (-55°C to 125°C). The OP516A is currently in active product status with ROHS3 compliance certification and REACH unaffected status. Power dissipation capability is increased to 100mW, providing additional thermal margin. This part is suitable for direct substitution in applications where the original SD1440-002L specifications are required.

LTR-3208E - Secondary Substitute:

The LTR-3208E from Lite-On Inc. provides an alternative for applications where package form factor flexibility exists. This component operates at 940nm wavelength (5nm offset from the original 935nm specification) and features identical voltage rating and dark current specification. The LTR-3208E uses radial package configuration rather than coaxial, requiring PCB layout modification. Operating temperature range is restricted to -40°C to 85°C, which does not cover the full -55°C to 125°C envelope of the original part. This substitute is suitable only for applications operating within the -40°C to 85°C temperature window and where radial package mounting is feasible. The LTR-3208E is in active product status with ROHS3 compliance and REACH unaffected status.

Frequently Asked Questions (FAQ)

Q: Can the LTR-3208E replace the SD1440-002L in all applications?

A: No. The LTR-3208E has a restricted operating temperature range (-40°C to 85°C) compared to the SD1440-002L (-55°C to 125°C). Applications requiring operation below -40°C or above 85°C must use the OP516A. Additionally, the LTR-3208E uses radial package configuration versus the coaxial metal can of the original part, requiring PCB redesign.

Q: What is the significance of the 5nm wavelength difference between the SD1440-002L (935nm) and LTR-3208E (940nm)?

A: The 5nm difference represents a shift in spectral response peak. For applications with narrowband optical filtering or specific light source matching, this difference may affect system performance. The OP516A maintains exact 935nm wavelength matching and is preferred for wavelength-critical applications.

Q: Are both substitute parts RoHS compliant?

A: Yes. Both the LTR-3208E and OP516A carry ROHS3 compliance certification, meeting current regulatory requirements. The original SD1440-002L is RoHS Compliant, and both substitutes maintain or exceed this compliance level.

Q: Which substitute part requires no PCB layout modification?

A: The OP516A requires no PCB layout modification. It maintains identical package configuration (Coaxial, Metal Can) and mounting type (Through Hole) as the SD1440-002L. The LTR-3208E requires PCB redesign due to its radial package configuration.

Q: What is the inventory status of substitute parts?

A: The OP516A has 8,976 pieces in stock. The LTR-3208E has 39,084 pieces in stock. Both parts are available in active product status from their respective manufacturers.

Q: Can the OP516A be used in applications originally designed for the SD1440-002L?

A: Yes. The OP516A is the direct functional equivalent with matching wavelength (935nm), package type (Coaxial, Metal Can), voltage rating (30V), mounting configuration (Through Hole), and operating temperature range (-55°C to 125°C). No design modifications are required.