SD5491-002 Equivalent & Substitute Parts

Part Overview

The SD5491-002 is an infrared phototransistor manufactured by Honeywell Sensing and Productivity Solutions. This component is classified as an optical sensor designed for infrared detection applications. The product status is obsolete, making equivalent and substitute parts necessary for ongoing system maintenance, repair, and new design implementations where functional compatibility is required.

Substiute Parts

SD5491-002

Honeywell Sensing and Productivity SolutionsIn Stock: 1026SD5491-002 Datasheet

Current PartRFQ

MTD6000PT-T

Marktech OptoelectronicsIn Stock: 1963MTD6000PT-T Datasheet

SimilarRFQ

OP800C

TT Electronics / Optek TechnologyIn Stock: 847OP800C Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SD5491-002 are identified based on functional equivalence within the optical sensor phototransistor category. The primary substitution criteria are:

• Component Type: Phototransistor technology for infrared detection
• Mounting Configuration: Through-hole mounting with top-view orientation
• Package Style: Metal can construction (coaxial or TO-series)
• Electrical Performance: Collector-emitter breakdown voltage, collector current capacity, and dark current specifications
• Wavelength Sensitivity: Infrared spectrum operation (880nm–890nm range)
• Compliance: RoHS compliance and regulatory alignment

The identified substitutes—MTD6000PT-T and OP800C—meet these criteria and maintain active product status with current inventory availability.

Parameter Comparison

Engineering Selection Recommendations

MTD6000PT-T (Marktech Optoelectronics) is suitable for applications requiring infrared phototransistor functionality with 880nm wavelength sensitivity. This component maintains RoHS compliance and active product status. The coaxial metal can package provides electromagnetic shielding appropriate for sensitive optical detection circuits. Maximum collector current of 20 mA and power dissipation of 100 mW define the operational envelope for this substitute.

OP800C (TT Electronics / Optek Technology) offers enhanced performance specifications with 890nm wavelength sensitivity, higher collector current capacity (50 mA maximum), and increased power dissipation capability (250 mW maximum). This component supports an extended operating temperature range (-65°C to 125°C) compared to MTD6000PT-T. ROHS3 compliance and TO-206AA/TO-18-3 metal can packaging ensure compatibility with standard through-hole PCB designs. The OP800C is appropriate for applications demanding higher current handling or broader thermal operating conditions.

Both substitutes maintain compliance certifications and active inventory status, eliminating supply chain risk associated with the obsolete SD5491-002.

Frequently Asked Questions (FAQ)

Q: What determines compatibility between SD5491-002 and its substitutes?

A: Compatibility is based on shared functional classification as infrared phototransistors with through-hole, top-view metal can packaging. Both substitutes operate in the 880nm–890nm infrared wavelength range and maintain equivalent dark current specifications (100 nA maximum). Electrical parameters including collector-emitter breakdown voltage (30 V) and dark current align across all three components.

Q: Can MTD6000PT-T and OP800C be used interchangeably?

A: Both components function as infrared phototransistors with compatible electrical characteristics. However, they differ in package configuration (coaxial versus TO-206AA/TO-18-3), maximum collector current (20 mA versus 50 mA), power dissipation (100 mW versus 250 mW), and operating temperature range. Circuit design requirements determine which substitute is appropriate. Applications with higher current demands or extended temperature operation require OP800C. Space-constrained designs with coaxial shielding requirements may favor MTD6000PT-T.

Q: What is the significance of the 880nm versus 890nm wavelength difference?

A: Both wavelengths fall within the near-infrared spectrum and are functionally equivalent for most infrared detection applications. The 10nm difference represents a minor variation in spectral sensitivity. System design specifications must confirm whether the application tolerates this wavelength variation or requires exact spectral matching.

Q: Are both substitutes RoHS compliant?

A: Yes. MTD6000PT-T carries RoHS compliance certification. OP800C carries ROHS3 compliance certification, which represents a more recent regulatory standard. Both components satisfy RoHS requirements for lead-free and restricted substance elimination.

Q: What packaging considerations apply to these substitutes?

A: SD5491-002 packaging specifications are not provided in available documentation. MTD6000PT-T uses coaxial metal can packaging suitable for shielded applications. OP800C uses TO-206AA/TO-18-3 metal can packaging, a standard through-hole format compatible with conventional PCB designs. PCB layout and mechanical mounting requirements determine which package style is appropriate.