SDP8436-004 Equivalent & Substitute Parts Reference

Part Overview

The SDP8436-004 is an 880nm side view radial phototransistor manufactured by Honeywell Sensing and Productivity Solutions. This component is classified as obsolete, necessitating identification of active equivalent parts for ongoing applications. The sensor operates across a temperature range of -40°C to 85°C with a maximum collector-emitter breakdown voltage of 30V and maximum power dissipation of 100mW. Due to its obsolete status, equivalent substitute parts with matching or compatible electrical and mechanical specifications are required for design continuity and procurement.

Substiute Parts

SDP8436-004

Honeywell Sensing and Productivity SolutionsIn Stock: 898SDP8436-004 Datasheet

Current PartRFQ

OED-ST-23G

Lumex Opto/Components Inc.In Stock: 939OED-ST-23G Datasheet

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PT928-6B-F

Everlight Electronics Co LtdIn Stock: 844PT928-6B-F Datasheet

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QSE133

onsemiIn Stock: 20490QSE133 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SDP8436-004 are evaluated based on the following critical parameters that determine functional equivalence:

Primary Matching Criteria:

• Wavelength: 880nm (primary detection spectrum)
• Voltage - Collector Emitter Breakdown: 30V (electrical stress rating)
• Current - Dark (Id): 100nA (leakage specification)
• Power - Max: 100mW (thermal dissipation limit)
• Mounting Type: Through Hole, Right Angle (mechanical interface)
• Orientation: Side View (optical axis alignment)
• Package / Case: Radial (form factor)

Secondary Compatibility Factors:

• Operating Temperature Range (must encompass or extend the original range)
• Product Status (active parts preferred for long-term availability)
• RoHS and regulatory compliance

Substitute parts are grouped into two categories: direct equivalents (matching wavelength 880nm) and alternative wavelength options (940nm) where electrical and mechanical parameters align.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitutes (880nm Wavelength):

OED-ST-23G (Lumex Opto/Components Inc.) is an active equivalent with matching electrical specifications (30V breakdown, 100nA dark current, 100mW power). This part maintains the 880nm wavelength and side view radial package. The operating temperature range extends to 100°C, exceeding the original specification. The viewing angle of 60° is wider than the original 18°, which may affect optical coupling in narrow-angle applications. ROHS3 compliance and unlimited MSL rating support long-term procurement.

QSE133 (onsemi) provides direct wavelength equivalence at 880nm with identical electrical ratings. This part extends the operating temperature range to -40°C to 100°C, matching the lower temperature limit of the original. The 50° viewing angle represents a moderate expansion from the original 18°. Extensive inventory (20,400 pcs) ensures availability. ROHS3 compliance and REACH unaffected status support regulatory requirements.

Alternative Substitute (940nm Wavelength):

PT928-6B-F (Everlight Electronics Co Ltd) operates at 940nm, a longer wavelength than the original 880nm specification. Electrical parameters match (30V breakdown, 100nA dark current). This part is suitable only for applications where 940nm detection is functionally acceptable or where the original 880nm specification permits wavelength variation. Operating temperature range (-25°C to 85°C) aligns with the original lower bound. ROHS3 compliance and REACH unaffected status are confirmed.

Selection Basis:

All substitute parts maintain the critical electrical parameters (30V breakdown voltage, 100nA dark current, 100mW power dissipation) and mechanical form factor (through-hole, side view, radial package). All active substitutes carry ROHS3 compliance and unlimited moisture sensitivity ratings. Selection between OED-ST-23G and QSE133 depends on viewing angle requirements and temperature range needs. PT928-6B-F is selected only when 940nm wavelength operation is acceptable.

Frequently Asked Questions (FAQ)

Q: Can OED-ST-23G replace SDP8436-004 in all applications?

A: OED-ST-23G matches all critical electrical parameters and maintains the 880nm wavelength and side view radial package. The wider 60° viewing angle may affect applications requiring the original 18° narrow-angle response. Verify optical coupling geometry before substitution.

Q: What is the difference between OED-ST-23G and QSE133?

A: Both parts operate at 880nm with identical electrical ratings (30V, 100nA, 100mW). OED-ST-23G has a 60° viewing angle and -20°C to 100°C temperature range. QSE133 has a 50° viewing angle and -40°C to 100°C temperature range. QSE133 extends the lower temperature limit to match the original SDP8436-004 specification.

Q: When is PT928-6B-F appropriate as a substitute?

A: PT928-6B-F operates at 940nm instead of 880nm. This part is suitable only for applications where 940nm detection is functionally equivalent or where the original specification permits wavelength variation. Verify photodiode or light source compatibility before selection.

Q: Are all substitute parts RoHS compliant?

A: Yes. OED-ST-23G, QSE133, and PT928-6B-F all carry ROHS3 compliance certification. The original SDP8436-004 is RoHS Compliant. All parts meet current regulatory requirements.

Q: What is the inventory status of substitute parts?

A: OED-ST-23G has 858 pcs in stock. QSE133 has 20,400 pcs in stock. PT928-6B-F has 808 pcs in stock. QSE133 offers the highest inventory availability for long-term procurement planning.

Q: Do substitute parts have the same package dimensions?

A: All substitute parts use radial, side view packages with through-hole mounting. Mechanical compatibility is maintained. Verify PCB footprint alignment with specific package drawings before final design implementation.

Q: What temperature range should I select?

A: The original SDP8436-004 operates from -40°C to 85°C. QSE133 matches the lower temperature limit (-40°C) and extends the upper limit to 100°C. OED-ST-23G operates from -20°C to 100°C. Select based on your application's thermal requirements.