SDP8105-001 Equivalent & Substitute Parts Reference

Part Overview

The SDP8105-001 is a phototransistor optical sensor manufactured by Honeywell Sensing and Productivity Solutions, designed for 935nm infrared detection applications with top view radial packaging. This component is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing system support and new design implementations. The sensor operates across industrial temperature ranges and is RoHS compliant, requiring substitutes that maintain electrical performance and environmental compliance standards.

Substiute Parts

SDP8105-001

Honeywell Sensing and Productivity SolutionsIn Stock: 777SDP8105-001 Datasheet

Current PartRFQ

OP535B

TT Electronics/Optek TechnologyIn Stock: 3345OP535B Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SDP8105-001 is determined by strict alignment with the following critical parameters:

Wavelength Matching: The substitute must operate at 935nm to maintain infrared detection compatibility with existing optical system designs and filters.

Voltage Rating: Maximum collector-emitter breakdown voltage must equal or exceed 15V to ensure safe operation within circuit voltage constraints.

Mounting and Orientation: Through-hole mounting with top-view orientation is mandatory for PCB assembly compatibility and optical axis alignment with system optics.

Electrical Performance: Dark current specifications and maximum power dissipation must be compatible with circuit design margins. Substitutes with lower dark current provide improved signal-to-noise performance.

Environmental Compliance: RoHS compliance status ensures regulatory alignment for commercial and industrial applications.

The OP535B qualifies as a substitute based on matching wavelength (935nm), voltage rating (15V maximum), through-hole mounting, top-view orientation, and RoHS compliance status. Package form factor differs (T-1 versus Radial), requiring mechanical verification for specific applications.

Parameter Comparison

Engineering Selection Recommendations

Primary Consideration - Product Status: The SDP8105-001 is classified as obsolete, while the OP535B maintains active production status. This availability differential is the primary driver for substitution evaluation.

Electrical Compatibility: Both components share identical wavelength (935nm) and maximum voltage ratings (15V), establishing core functional equivalence for infrared detection circuits. The OP535B exhibits lower dark current (100nA versus 250nA), providing improved signal-to-noise characteristics in low-light applications.

Thermal Performance: The OP535B supports higher maximum power dissipation (100mW versus 70mW), offering additional thermal margin in power-constrained designs.

Temperature Range: The OP535B extends the upper operating temperature limit to 100°C compared to the SDP8105-001 specification of 85°C, enabling deployment in higher-temperature environments.

Regulatory Compliance: Both components maintain RoHS compliance status, with the OP535B meeting ROHS3 specifications, ensuring continued regulatory alignment.

Package Form Factor Variance: The primary mechanical difference is package geometry—radial versus T-1. This distinction requires verification against specific PCB footprint and mechanical assembly requirements before implementation.

Frequently Asked Questions (FAQ)

Q: Can the OP535B directly replace the SDP8105-001 in existing designs?

A: Electrical and optical parameters are compatible. However, the package form factor differs (T-1 versus Radial), requiring PCB footprint verification and potential mechanical redesign. Consult mechanical drawings and assembly specifications before implementation.

Q: What is the significance of the dark current difference between these components?

A: The OP535B exhibits lower dark current (100nA) compared to the SDP8105-001 (250nA). Lower dark current reduces baseline noise in the sensor output, improving signal-to-noise ratio in applications requiring detection of weak infrared signals.

Q: Are both components suitable for industrial temperature environments?

A: The SDP8105-001 operates from -40°C to 85°C. The OP535B extends this range to -40°C to 100°C, providing broader environmental compatibility. Application requirements determine whether the extended temperature capability is necessary.

Q: What does the obsolete status of the SDP8105-001 mean for long-term supply?

A: Obsolete classification indicates the manufacturer has discontinued production. While existing inventory may be available, long-term supply cannot be guaranteed. The OP535B, with active production status, provides assured availability for ongoing requirements.

Q: Are there viewing angle differences between these sensors?

A: The SDP8105-001 specifies a 20° viewing angle. The OP535B viewing angle specification is not provided in available documentation. Optical system designs dependent on specific viewing angle characteristics require direct manufacturer consultation.

Q: Do both components meet current RoHS requirements?

A: Yes. The SDP8105-001 is RoHS Compliant. The OP535B meets ROHS3 Compliant specifications, representing the current regulatory standard for hazardous substance restrictions.

Q: What is the maximum collector current rating for the OP535B?

A: The OP535B specifies a maximum collector current (Ic) of 32mA. This parameter is not provided for the SDP8105-001 in available documentation.