SDP8405-014 Equivalent & Substitute Parts

Part Overview

The SDP8405-014 is a phototransistor optical sensor manufactured by Honeywell Sensing and Productivity Solutions, designed for 935nm infrared detection with top view radial packaging. This component operates as a light-sensitive transistor in Through Hole configuration, suitable for applications requiring near-infrared photodetection in the 935nm wavelength band.

The SDP8405-014 is classified as Obsolete. Identifying equivalent substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production or maintenance requirements for systems utilizing this optical sensor.

Substiute Parts

SDP8405-014

Honeywell Sensing and Productivity SolutionsIn Stock: 8454SDP8405-014 Datasheet

Current PartRFQ

LTR-3208E

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

SimilarRFQ

OP505C

TT Electronics/Optek TechnologyIn Stock: 2954OP505C Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SDP8405-014 are identified based on the following critical parameters that determine functional equivalence:

Primary Matching Criteria:

• Wavelength compatibility (935nm or 940nm near-infrared band)
• Voltage rating (Collector Emitter Breakdown minimum 30V)
• Dark current specification (100nA maximum)
• Mounting type (Through Hole)
• Orientation (Top View)
• Operating temperature range overlap (-40°C minimum, 85°C minimum upper limit)
• RoHS compliance status

Secondary Compatibility Factors:

• Current rating (Ic) may exceed the original specification
• Power dissipation (Max) may exceed the original specification
• Package form factor (Radial vs. T-1) affects mechanical fit but not electrical function

The substitute parts LTR-3208E and OP505C meet the primary matching criteria. Both components maintain the required voltage, dark current, mounting configuration, and temperature operating range. Wavelength variation between 935nm and 940nm remains within the near-infrared detection band for typical applications.

Parameter Comparison

Engineering Selection Recommendations

LTR-3208E (Lite-On Inc.): This substitute maintains electrical equivalence with the SDP8405-014 across all critical parameters. The 940nm wavelength operates within the near-infrared detection band adjacent to the original 935nm specification. Current and power ratings exceed the original component, providing operational margin. The component is Active status with ROHS3 compliance and REACH Unaffected designation. Radial package form factor matches the original mechanical configuration. Inventory availability is substantial (39,084 units).

OP505C (TT Electronics/Optek Technology): This substitute matches the original 935nm wavelength specification exactly and maintains all required electrical parameters. Current and power ratings exceed the original component. The component is Active status with ROHS3 compliance and REACH Unaffected designation. Operating temperature range extends to 100°C, exceeding the original -40°C ~ 85°C specification. Package form factor is T-1 rather than Radial, requiring mechanical redesign of the mounting interface. Inventory availability is lower (2,927 units).

Selection Basis:

• Both substitutes are Active products with current manufacturer support
• Both maintain RoHS3 compliance and REACH compliance status
• LTR-3208E provides direct mechanical compatibility (Radial package)
• OP505C provides exact wavelength match (935nm) with extended temperature range
• Component selection depends on mechanical constraints and wavelength tolerance requirements of the application

Frequently Asked Questions (FAQ)

Q: Can LTR-3208E replace SDP8405-014 in existing designs without modification?

A: LTR-3208E is electrically equivalent and maintains the same Radial package form factor. The 940nm wavelength operates within the near-infrared band. No circuit modifications are required. Mechanical mounting remains compatible.

Q: What is the wavelength difference between 935nm and 940nm, and does it affect functionality?

A: The 5nm difference represents operation within the same near-infrared detection band. Both wavelengths are used for similar photodetection applications. Compatibility depends on the specific optical filter or light source wavelength in the application. Verify that the application's optical components are compatible with 940nm operation.

Q: Why does OP505C have a different package type (T-1 vs. Radial)?

A: Package type affects mechanical mounting and board layout. T-1 is a smaller cylindrical package, while Radial uses wire leads. Switching from Radial to T-1 requires PCB redesign and new mounting hardware. Electrical function remains equivalent.

Q: Are both substitute parts currently available?

A: Yes. LTR-3208E has 39,084 units in stock. OP505C has 2,927 units in stock. Both are classified as Active products with ongoing manufacturer support.

Q: Do the substitute parts meet the same compliance standards as the original?

A: Both substitutes are ROHS3 Compliant and REACH Unaffected. The original SDP8405-014 is RoHS Compliant. ROHS3 represents a more recent compliance standard. Both substitutes exceed the original compliance requirements.

Q: Can I use OP505C if my application requires the exact 935nm wavelength?

A: Yes. OP505C operates at 935nm, matching the original specification exactly. However, the T-1 package requires mechanical redesign compared to the Radial package of SDP8405-014.

Q: What is the maximum operating temperature for each substitute?

A: SDP8405-014 operates to 85°C. LTR-3208E operates to 85°C. OP505C operates to 100°C. If your application requires operation above 85°C, OP505C provides extended temperature capability.

Q: Are there any electrical parameter differences that would affect circuit design?

A: Maximum collector current (Ic) and power dissipation (Max) are higher in both substitutes. This provides operational margin and does not require circuit redesign. Dark current (Id) remains at 100nA for all three components. Voltage rating remains 30V for all components.