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PDV-P8103
Electronics Part Number
PDV-P8103-WXManufacturer
onsemi
PDV-P8103
Description
CdS Photoresistor, 16-33kOhm ResistanceInventory
521 Pcs New Original In Stock
CdS photoconductive cell, 520nm peak, 16–33kΩ at 10 lux. For automatic lighting and exposure control circuits.
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Minimum 1
Minimum 1
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Basic cost: USD 70.00
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Technical Specifications
Category
Optical Sensors, Photo Detectors - Logic Output
Manufacturer
onsemi
Packaging
-
Operating Temperature
-40°C ~ 85°C (TA)
Package / Case
3-SIP, Side View
Series
OPTOLOGIC®
Base Product Number
QSE158
Product Status
Obsolete
Type
Photo Detector, Logic Output
Output Type
Open Collector
Grade
-
Qualification
-
Wavelength
880nm
Data Sheet Document (D)
Datasheets
Download QSE158 Product Specification (PDF)
HTML Datasheet
QSE158-DG
Design Resources
Development Tool Selector
Environmental & Export Classification
Moisture Sensitivity Level (MSL)
1 (Unlimited)
REACH Status
REACH Unaffected
ECCN
EAR99
HTSUS
8541.49.7080
Additional Information
Other Names
QSE158QT-DG QSE158-NDR QSE158QT
Standard Package
500
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Frequently Asked Questions (FAQ)
Can the QSE158 optical sensor be safely used in a high-vibration industrial environment, and what me
The QSE158, being an obsolete OPTOLOGIC® side-looking photo detector with an open-collector logic output, is not inherently rated for high-vibration applications. Its 3-SIP package lacks robust mechanical anchoring, and internal wire bonds or die attach may fatigue under sustained vibration. To mitigate risk, use a conformal-coated PCB with strain relief on leads, secure the component with RTV silicone adhesive (non-conductive), and avoid mounting near motors or actuators. Consider upgrading to a more robust alternative like the OPL560A, which offers better mechanical stability and is actively supported.
I'm replacing a failed QSE158 in a legacy barcode scanner design—can I drop in the OPL550-OCA withou
While the OPL550-OCA is listed as a substitute for the QSE158, it is not a direct drop-in replacement due to differences in output timing, rise/fall characteristics, and internal hysteresis. The QSE158 has a slower response optimized for 880nm detection in slotted switches, whereas the OPL550-OCA may exhibit faster edge rates that could cause noise sensitivity in long trace layouts. Verify signal integrity with an oscilloscope and consider adding a small RC filter (e.g., 1kΩ + 100pF) at the output if glitches occur. Firmware debounce timing may also need adjustment.
Is it safe to operate the QSE158 near its maximum ambient temperature of 85°C in an enclosed plastic
Operating the QSE158 at or near 85°C in a thermally constrained enclosure significantly increases the risk of premature failure. Although the datasheet specifies -40°C to 85°C operating range, this assumes adequate convection. In a sealed plastic housing, thermal resistance can cause junction temperatures to exceed safe limits, accelerating dark current growth and degrading photodetection sensitivity over time. Add thermal vias under the package, use a metal core PCB if possible, and monitor actual case temperature. For high-temperature applications, consider the QSE159, which has improved thermal performance and is pin-compatible.
Can the QSE158’s open-collector output be directly interfaced with a 3.3V microcontroller logic inpu
No—the QSE158’s open-collector output requires an external pull-up resistor to function correctly. Without it, the output remains floating when inactive, leading to undefined logic states, increased susceptibility to EMI, and potential false triggering in noisy environments. Always use a pull-up resistor (typically 4.7kΩ to 10kΩ) connected to the MCU’s 3.3V supply. Ensure the resistor value balances rise time and power consumption; lower values improve speed but increase current when the output is low. Omitting this component is a common design-in error that compromises system reliability.
Given that the QSE158 is obsolete, what long-term supply chain risks should I consider if continuing
Using the obsolete QSE158 in a new design introduces significant supply chain risk, including sudden last-time buys, counterfeit parts, and no future restocking from onsemi. With only 2600 units currently in stock, long production runs are unsustainable. For new designs, migrate to an active alternative such as the OPL561-OC or OPL560A, which offer similar 880nm sensitivity, open-collector outputs, and side-view packaging with improved availability and lifecycle support. Perform full electrical and mechanical validation, but prioritize these parts to ensure design longevity and reduce future redesign costs.
Can the QSE158 optical sensor be safely used in a high-vibration industrial environment, and what me
The QSE158, being an obsolete OPTOLOGIC® side-looking photo detector with an open-collector logic output, is not inherently rated for high-vibration applications. Its 3-SIP package lacks robust mechanical anchoring, and internal wire bonds or die attach may fatigue under sustained vibration. To mitigate risk, use a conformal-coated PCB with strain relief on leads, secure the component with RTV silicone adhesive (non-conductive), and avoid mounting near motors or actuators. Consider upgrading to a more robust alternative like the OPL560A, which offers better mechanical stability and is actively supported.
I'm replacing a failed QSE158 in a legacy barcode scanner design—can I drop in the OPL550-OCA withou
While the OPL550-OCA is listed as a substitute for the QSE158, it is not a direct drop-in replacement due to differences in output timing, rise/fall characteristics, and internal hysteresis. The QSE158 has a slower response optimized for 880nm detection in slotted switches, whereas the OPL550-OCA may exhibit faster edge rates that could cause noise sensitivity in long trace layouts. Verify signal integrity with an oscilloscope and consider adding a small RC filter (e.g., 1kΩ + 100pF) at the output if glitches occur. Firmware debounce timing may also need adjustment.
Is it safe to operate the QSE158 near its maximum ambient temperature of 85°C in an enclosed plastic
Operating the QSE158 at or near 85°C in a thermally constrained enclosure significantly increases the risk of premature failure. Although the datasheet specifies -40°C to 85°C operating range, this assumes adequate convection. In a sealed plastic housing, thermal resistance can cause junction temperatures to exceed safe limits, accelerating dark current growth and degrading photodetection sensitivity over time. Add thermal vias under the package, use a metal core PCB if possible, and monitor actual case temperature. For high-temperature applications, consider the QSE159, which has improved thermal performance and is pin-compatible.
Can the QSE158’s open-collector output be directly interfaced with a 3.3V microcontroller logic inpu
No—the QSE158’s open-collector output requires an external pull-up resistor to function correctly. Without it, the output remains floating when inactive, leading to undefined logic states, increased susceptibility to EMI, and potential false triggering in noisy environments. Always use a pull-up resistor (typically 4.7kΩ to 10kΩ) connected to the MCU’s 3.3V supply. Ensure the resistor value balances rise time and power consumption; lower values improve speed but increase current when the output is low. Omitting this component is a common design-in error that compromises system reliability.
Given that the QSE158 is obsolete, what long-term supply chain risks should I consider if continuing
Using the obsolete QSE158 in a new design introduces significant supply chain risk, including sudden last-time buys, counterfeit parts, and no future restocking from onsemi. With only 2600 units currently in stock, long production runs are unsustainable. For new designs, migrate to an active alternative such as the OPL561-OC or OPL560A, which offer similar 880nm sensitivity, open-collector outputs, and side-view packaging with improved availability and lifecycle support. Perform full electrical and mechanical validation, but prioritize these parts to ensure design longevity and reduce future redesign costs.
Quality Assurance (QC)
WINSURE ensures the quality and authenticity of every electronic component through professional inspections and batch sampling, guaranteeing reliable sourcing, stable performance, and compliance with technical specifications, helping customers reduce supply chain risks and confidently use components in production.
Sep 15 2026
