SD1440-002 Equivalent & Substitute Parts Reference

Part Overview

The SD1440-002 is a phototransistor optical sensor manufactured by Honeywell Sensing and Productivity Solutions, designed for 935nm infrared detection applications. This component features a top view coaxial metal can package and operates across an extended temperature range of -55°C to 125°C. The part is currently classified as obsolete, making equivalent substitute components necessary for ongoing system support, maintenance, and new design implementations where 935nm photodetection functionality is required.

Substiute Parts

SD1440-002

Honeywell Sensing and Productivity SolutionsIn Stock: 729SD1440-002 Datasheet

Current PartRFQ

LTR-3208E

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

SimilarRFQ

OP516A

TT Electronics/Optek TechnologyIn Stock: 9048OP516A Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SD1440-002 is determined by the following critical parameters:

Primary Substitution Criteria:

• Wavelength compatibility (935nm or adjacent infrared spectrum)
• Voltage rating (Collector Emitter Breakdown minimum 30 V)
• Dark current specification (100 nA maximum)
• Mounting type (Through Hole)
• Orientation (Top View)
• Package compatibility (Coaxial Metal Can or equivalent form factor)
• Operating temperature range (minimum -55°C to 125°C coverage)

Identified Substitute Parts:

The OP516A from TT Electronics/Optek Technology qualifies as a direct substitute. This component matches the SD1440-002 across all critical parameters: identical 935nm wavelength, matching 30 V breakdown voltage, equivalent dark current specification, identical through-hole top view coaxial metal can package, and identical operating temperature range (-55°C to 125°C). The OP516A is currently in active product status with ROHS3 compliance.

The LTR-3208E from Lite-On Inc. qualifies as a functional substitute with minor parameter variations. While this component operates at 940nm (5nm offset from 935nm), it maintains equivalent voltage and dark current specifications, through-hole top view mounting, and extended operating temperature coverage (-40°C to 85°C). The primary distinction is the radial package configuration versus coaxial metal can, which may require mechanical redesign considerations.

Parameter Comparison

Engineering Selection Recommendations

OP516A Selection Criteria:

The OP516A represents the optimal substitute for direct replacement applications. This component maintains identical specifications across all critical parameters including wavelength (935nm), voltage rating (30 V), dark current (100 nA), package type (coaxial metal can), and operating temperature range (-55°C to 125°C). The OP516A is currently in active product status with ROHS3 compliance certification, ensuring long-term availability and regulatory alignment. No mechanical redesign is required for PCB integration. This substitute is appropriate for applications requiring exact parameter matching and extended temperature operation.

LTR-3208E Selection Criteria:

The LTR-3208E is suitable for applications where wavelength tolerance permits 940nm operation and operating temperature requirements do not exceed -40°C to 85°C. This component offers higher power dissipation capability (100 mW versus 75 mW) and maintains equivalent voltage and dark current specifications. The radial package configuration requires mechanical redesign of the PCB footprint and component mounting structure. The LTR-3208E is appropriate for cost-optimized designs where package form factor flexibility exists and temperature range requirements align with the -40°C to 85°C specification.

Compliance Considerations:

Both substitute parts maintain RoHS compliance (ROHS3 standard) and are classified under identical HTSUS and ECCN codes as the original SD1440-002, ensuring regulatory and trade compliance equivalence.

Frequently Asked Questions (FAQ)

Q: Can the OP516A directly replace the SD1440-002 without PCB modifications?

A: Yes. The OP516A maintains identical package configuration (coaxial metal can), mounting type (through hole), and orientation (top view). No PCB footprint or mechanical redesign is required for direct substitution.

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

A: The 5nm offset represents a minor spectral shift within the near-infrared region. Substitution feasibility depends on the specific optical system design and detector sensitivity requirements. Applications with wavelength-critical filtering or narrow-band detection may require evaluation of system performance with 940nm operation.

Q: Does the LTR-3208E radial package affect electrical performance?

A: No. The radial package configuration is a mechanical form factor difference only. Electrical parameters (voltage, current, power dissipation) remain equivalent. However, PCB footprint and component mounting structure require redesign.

Q: Are both substitute parts suitable for extended temperature applications?

A: The OP516A supports the full extended temperature range (-55°C to 125°C) matching the SD1440-002. The LTR-3208E operates within -40°C to 85°C, which is narrower. Applications requiring operation below -40°C or above 85°C must use the OP516A.

Q: What is the current availability status of these substitute parts?

A: The OP516A is in active product status with 8,976 pieces in stock. The LTR-3208E is in active product status with 39,084 pieces in stock. Both components are currently available for procurement.

Q: Are there any moisture sensitivity or handling differences between the substitutes?

A: The SD1440-002 and OP516A both specify MSL 1 (Unlimited), indicating no moisture sensitivity restrictions. The LTR-3208E specifies MSL 1 (Unlimited) as well. All three components have identical moisture handling requirements.

Q: Which substitute is recommended for new design implementations?

A: The OP516A is recommended for new designs requiring 935nm wavelength operation and extended temperature range (-55°C to 125°C). This component provides exact parameter matching with the obsolete SD1440-002 and ensures long-term design stability.