SDP8406-001 Equivalent & Substitute Parts Reference

Part Overview

The SDP8406-001 is a 935nm side view radial phototransistor manufactured by Honeywell Sensing and Productivity Solutions. This optical sensor component is classified as obsolete, with 796 pieces currently available in new original stock. The part operates in the near-infrared spectrum and is designed for through-hole, right-angle mounting applications. Due to its obsolete product status, equivalent and substitute parts from active manufacturers are necessary for ongoing design support, production continuity, and long-term component availability.

Substiute Parts

SDP8406-001

Honeywell Sensing and Productivity SolutionsIn Stock: 813SDP8406-001 Datasheet

Current PartRFQ

OPS698

TT Electronics/Optek TechnologyIn Stock: 1185OPS698 Datasheet

UpgradeRFQ

OP550A

TT Electronics/Optek TechnologyIn Stock: 2027OP550A Datasheet

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OP550C

TT Electronics/Optek TechnologyIn Stock: 3748OP550C Datasheet

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PT928-6C-F

Everlight Electronics Co LtdIn Stock: 3295PT928-6C-F Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SDP8406-001 is determined by the following critical parameters: wavelength (935nm), voltage rating (30V collector-emitter breakdown maximum), dark current specification (100nA maximum), power dissipation (100mW maximum), mounting type (through-hole radial), and orientation (side view). All substitute parts must maintain compatibility across these core electrical and mechanical specifications.

The substitute parts are grouped into two categories:

Direct Equivalents (Same Wavelength - 935nm): OP550A and OP550C from TT Electronics/Optek Technology meet the wavelength requirement and maintain identical voltage, dark current, power, and package specifications. Both parts are active products with enhanced operating temperature ranges (-40°C to 100°C) compared to the original part.

Functional Equivalent (Similar Wavelength - 940nm): PT928-6C-F from Everlight Electronics operates at 940nm, a 5nm deviation from the specified 935nm wavelength. This part maintains the same voltage rating, dark current specification, and radial side-view package configuration. The wavelength difference falls within the near-infrared spectrum and may be acceptable for applications with broadband optical coupling.

Alternative Sensing Method: OPS698 from TT Electronics/Optek Technology represents a through-beam phototransistor configuration, differing from the side-view orientation of the main part. This part shares the same voltage rating and dark current specification but employs a different sensing method and optical geometry.

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement (Preferred): OP550A and OP550C are the primary substitutes for the SDP8406-001. Both parts are manufactured by TT Electronics/Optek Technology and maintain active product status with full compliance to ROHS3 standards. OP550A provides a maximum collector current of 4.7mA, while OP550C provides 2.4mA. Selection between these two variants depends on the required collector current specification for the application circuit. Both parts extend the operating temperature range to -40°C to 100°C, providing improved thermal performance compared to the original part's -40°C to 85°C range.

For Extended Temperature Applications: If the application requires operation below -25°C or above 85°C, OP550A or OP550C are preferred over PT928-6C-F, as the Everlight part is limited to -25°C to 85°C.

For Wavelength-Sensitive Applications: PT928-6C-F operates at 940nm instead of 935nm. This 5nm wavelength shift may affect optical coupling efficiency in narrowband filter applications. This part is suitable only when the application optical design accommodates the 940nm wavelength or when spectral sensitivity is broadband.

For Alternative Sensing Geometry: OPS698 employs through-beam sensing rather than side-view orientation. This part is suitable only when the application can accommodate a different optical geometry and sensing method.

All substitute parts maintain compliance with RoHS and MSL requirements equivalent to the original part.

Frequently Asked Questions (FAQ)

Q: Can OP550A and OP550C be used interchangeably with SDP8406-001?

A: OP550A and OP550C are direct equivalents for the SDP8406-001 in terms of wavelength (935nm), voltage rating (30V), dark current (100nA), power dissipation (100mW), and package configuration (radial, side view, through-hole). The primary difference is the maximum collector current specification: OP550A provides 4.7mA and OP550C provides 2.4mA. Selection depends on the circuit's collector current requirement. Both parts are active products with extended operating temperature ranges.

Q: What is the difference between OP550A and OP550C?

A: Both parts share identical wavelength, voltage, dark current, power, and package specifications. The distinction is the maximum collector current: OP550A is rated for 4.7mA while OP550C is rated for 2.4mA. Choose OP550A for applications requiring higher collector current output and OP550C for lower-current applications.

Q: Can PT928-6C-F replace SDP8406-001 in all applications?

A: PT928-6C-F is a functional equivalent with the same voltage rating (30V), dark current (100nA), and radial side-view package. However, it operates at 940nm instead of 935nm. This 5nm wavelength difference may affect optical coupling efficiency in applications with narrowband optical filters or wavelength-specific detector designs. PT928-6C-F is suitable only when the application optical design accommodates 940nm wavelength or operates with broadband spectral sensitivity.

Q: What is OPS698 and when should it be used?

A: OPS698 is a through-beam phototransistor from TT Electronics/Optek Technology. Unlike the SDP8406-001 and other side-view variants, OPS698 employs a different sensing method and optical geometry. It maintains the same voltage rating (30V) and dark current specification (100nA) but is not a direct replacement. OPS698 is suitable only when the application can accommodate a through-beam sensing configuration instead of side-view orientation.

Q: Are all substitute parts RoHS compliant?

A: Yes. The SDP8406-001 is RoHS Compliant, and all substitute parts (OP550A, OP550C, PT928-6C-F, and OPS698) are ROHS3 Compliant. All parts maintain MSL rating of 1 (Unlimited), indicating no moisture sensitivity restrictions.

Q: What is the inventory status of substitute parts?

A: OP550C has the highest inventory availability with 3,688 pieces in stock. OP550A has 1,990 pieces available. PT928-6C-F has 3,200 pieces in stock. OPS698 has 1,139 pieces available. The original SDP8406-001 has 796 pieces remaining in new original stock.

Q: Do substitute parts support the same operating temperature range as SDP8406-001?

A: The SDP8406-001 operates from -40°C to 85°C. OP550A and OP550C extend this range to -40°C to 100°C, providing improved high-temperature performance. PT928-6C-F is limited to -25°C to 85°C, which is narrower at the low-temperature end. OPS698 supports -40°C to 100°C. For applications requiring operation below -25°C, OP550A, OP550C, or OPS698 are required.