SDP8004-301 Equivalent & Substitute Parts

Part Overview

The SDP8004-301 is an optical sensor manufactured by Honeywell Sensing and Productivity Solutions, designed as a 935nm photo detector with logic output and open collector configuration. The device features a radial, 3-lead side view package and operates across the temperature range of -40°C to 85°C. This part is classified as obsolete, making equivalent and substitute parts necessary for ongoing system support and new design implementations. The SDP8004-301 is RoHS compliant and REACH unaffected, with unlimited moisture sensitivity level (MSL 1).

Key Parameters

Parameter	Value
Manufacturer	Honeywell Sensing and Productivity Solutions
Part Number	SDP8004-301
Category	Optical Sensors
Wavelength	935nm
Type	Photo Detector, Logic Output
Output Type	Open Collector
Package / Case	Radial, 3 Lead, Side View
Operating Temperature	-40°C ~ 85°C
Product Status	Obsolete
RoHS Status	RoHS Compliant
MSL	1 (Unlimited)
REACH Status	REACH Unaffected

Substitute Part Grouping Explanation

Substitution of the SDP8004-301 is determined by the following critical parameters: wavelength (935nm), sensor type (photo detector with logic output), output configuration (open collector), operating temperature range (-40°C to 85°C), and compliance certifications (RoHS and REACH status).

The substitute parts are grouped into two categories based on package configuration:

Category 1: Side View Package (Non-3-SIP) Parts with side view packages that maintain the original form factor: OPL550-OCA and OPL551-OCA. These parts feature open collector output configurations compatible with the SDP8004-301 logic interface.

Category 2: 3-SIP Side View Package Parts with 3-SIP side view packages: OPL530, OPL560A, and OPL561-OC. These parts share the 935nm wavelength, photo detector logic output type, and operating temperature range, with variations in output type (NPN or Push-Pull) that may require circuit evaluation.

All substitute parts operate within the identical temperature range (-40°C to 85°C), maintain 935nm wavelength detection, and comply with RoHS3 and REACH requirements. Output type differences (open collector, NPN, push-pull, open collector inverter) represent the primary technical distinction requiring circuit-level compatibility assessment.

Parameter Comparison

Part Number	Manufacturer	Wavelength	Type	Output Type	Package / Case	Operating Temperature	Product Status	RoHS Status	MSL
SDP8004-301	Honeywell	935nm	Photo Detector, Logic Output	Open Collector	Radial, 3 Lead, Side View	-40°C ~ 85°C	Obsolete	RoHS Compliant	1
OPL530	TT Electronics / Optek Technology	935nm	Photo Detector, Logic Output	NPN	3-SIP, Side View	-40°C ~ 85°C	Active	ROHS3 Compliant	1
OPL550-OCA	TT Electronics / Optek Technology	935nm	Photo Detector, Logic Output	Open Collector	Side View	-40°C ~ 85°C	Active	ROHS3 Compliant	1
OPL551-OCA	TT Electronics / Optek Technology	935nm	Photo Detector, Logic Output	Open Collector Inverter	Side View	-40°C ~ 85°C	Active	ROHS3 Compliant	1
OPL560A	TT Electronics / Optek Technology	935nm	Photo Detector, Logic Output	Push-Pull	3-SIP, Side View	-40°C ~ 85°C	Active	ROHS3 Compliant	1
OPL561-OC	TT Electronics / Optek Technology	935nm	Photo Detector, Logic Output	Open Collector Inverter	3-SIP, Side View	-40°C ~ 85°C	Active	ROHS3 Compliant	1

Engineering Selection Recommendations

Direct Substitution (Highest Compatibility): OPL550-OCA is the primary substitute for SDP8004-301. Both parts feature open collector output configuration, 935nm wavelength detection, identical operating temperature range, and side view package orientation. OPL550-OCA maintains active product status with ROHS3 compliance, ensuring long-term availability and regulatory alignment.

Output-Compatible Substitution: OPL551-OCA provides open collector inverter output with side view packaging. This part requires circuit evaluation to confirm logic inversion compatibility with the original SDP8004-301 application.

Package-Variant Substitution: OPL530, OPL560A, and OPL561-OC feature 3-SIP side view packages with alternative output types (NPN and push-pull configurations). These parts maintain wavelength and temperature specifications but require mechanical and electrical interface verification due to package and output type differences.

All substitute parts maintain RoHS3 compliance and REACH unaffected status, supporting regulatory requirements equivalent to or exceeding the original SDP8004-301 specification.

Frequently Asked Questions (FAQ)

Q: Can OPL550-OCA directly replace SDP8004-301 without circuit modification? A: OPL550-OCA shares identical wavelength (935nm), operating temperature range (-40°C to 85°C), and open collector output configuration with SDP8004-301. Package orientation is side view for both parts. Mechanical fit and PCB layout compatibility require verification based on specific application requirements.

Q: What is the difference between open collector and open collector inverter outputs? A: Open collector output (OPL550-OCA) provides non-inverted logic signal. Open collector inverter output (OPL551-OCA, OPL561-OC) provides inverted logic signal. Circuit logic requirements determine which configuration is appropriate for the application.

Q: Are 3-SIP package parts (OPL530, OPL560A, OPL561-OC) compatible with the original radial 3-lead package? A: 3-SIP and radial 3-lead packages have different mechanical form factors and pin configurations. These parts require PCB redesign and mechanical evaluation. Electrical functionality at 935nm wavelength and -40°C to 85°C operating range remains compatible.

Q: What output type should I select if the original circuit expects open collector logic? A: OPL550-OCA provides direct open collector output matching SDP8004-301 specification. OPL530 (NPN output) and OPL560A (push-pull output) require circuit interface modification and are not direct substitutes for open collector applications.

Q: Are all substitute parts RoHS compliant? A: All listed substitute parts are ROHS3 compliant, meeting or exceeding the RoHS compliance level of the original SDP8004-301. All parts are REACH unaffected with MSL 1 (unlimited moisture sensitivity level).

Q: What inventory availability exists for substitute parts? A: OPL550-OCA (1387 pcs), OPL551-OCA (970 pcs), OPL530 (1817 pcs), OPL560A (1049 pcs), and OPL561-OC (4804 pcs) are available in stock as new original components.

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