SDP8611-003 Equivalent & Substitute Parts

Part Overview

The SDP8611-003 is an optical sensor manufactured by Honeywell Sensing and Productivity Solutions, classified as a photodetector with Schmitt logic output and side-looking configuration. This component operates at 935nm wavelength and features open collector inverter output in a radial 3-lead package. The product is currently obsolete, necessitating identification of functionally equivalent alternatives for ongoing system support and new designs requiring this sensor technology.

Substiute Parts

SDP8611-003

Honeywell Sensing and Productivity SolutionsIn Stock: 1141SDP8611-003 Datasheet

Current PartRFQ

OPL531-OCA

TT Electronics/Optek TechnologyIn Stock: 972OPL531-OCA Datasheet

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OPL551-OC

TT Electronics / Optek TechnologyIn Stock: 4885OPL551-OC Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the SDP8611-003 is determined by strict alignment of the following electrical and mechanical parameters:

Critical Matching Parameters:

• Wavelength: 935nm (infrared detection band)
• Sensor Type: Photo Detector with Logic Output capability
• Output Type: Open Collector Inverter configuration
• Viewing Geometry: Side View orientation
• Operating Temperature Range: -40°C to 85°C minimum
• Lead Count: 3-lead configuration
• RoHS Compliance: Compliant status

The substitute parts OPL551-OC and OPL531-OCA satisfy all critical parameters. Both are manufactured by TT Electronics/Optek Technology and operate within the Photologic® series. Both parts maintain 935nm wavelength detection, open collector inverter output, side-view configuration, and identical operating temperature specifications. Package variations (3-SIP versus standard side view) represent mechanical differences that do not affect electrical substitution eligibility when physical space constraints permit.

Parameter Comparison

Engineering Selection Recommendations

OPL551-OC is the primary substitute for SDP8611-003. This part maintains active product status with ROHS3 compliance and REACH unaffected designation. The OPL551-OC provides full electrical equivalence with identical wavelength, output configuration, and operating temperature specifications. Inventory availability is substantial at 4804 units in stock.

OPL531-OCA serves as a secondary substitute option. This part is also active with ROHS3 compliance and REACH unaffected status. The OPL531-OCA differs in package configuration (3-SIP versus radial), which may require PCB layout modification. Inventory availability is 942 units in stock.

Selection between OPL551-OC and OPL531-OCA depends on physical package constraints within the target application. Both parts satisfy all electrical substitution criteria and regulatory compliance requirements. The obsolete status of SDP8611-003 makes transition to either active substitute necessary for long-term component sourcing.

Frequently Asked Questions (FAQ)

Q: Can OPL551-OC and OPL531-OCA be used interchangeably with SDP8611-003?

A: Both parts satisfy the electrical substitution criteria: 935nm wavelength, open collector inverter output, side-view configuration, and -40°C to 85°C operating temperature. Package differences (radial 3-lead versus 3-SIP) require physical compatibility verification with the target PCB layout.

Q: What is the primary difference between OPL551-OC and OPL531-OCA?

A: The primary difference is package configuration. OPL551-OC uses a standard side-view package, while OPL531-OCA uses a 3-SIP (Single In-line Package) configuration. Electrical performance and specifications are equivalent.

Q: Why is SDP8611-003 listed as obsolete?

A: Product status reflects manufacturer discontinuation. Active substitutes OPL551-OC and OPL531-OCA provide equivalent functionality for new designs and legacy system support.

Q: Are there compliance differences between the main part and substitutes?

A: SDP8611-003 is RoHS Compliant. Both substitutes are ROHS3 Compliant, representing an enhanced compliance standard. Both substitutes are REACH Unaffected. All three parts share EAR99 export classification.

Q: What inventory levels are available for each substitute?

A: OPL551-OC has 4804 units in stock. OPL531-OCA has 942 units in stock. Both are available as new original components.

Q: Do the substitutes maintain the same moisture sensitivity level?

A: Yes. SDP8611-003, OPL551-OC, and OPL531-OCA all have Moisture Sensitivity Level 1 (Unlimited), indicating no moisture sensitivity restrictions.