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GP1S73P
Sharp Microelectronics
SENSOR OPT SLOT PHOTOTRANS MODUL
5578 Pcs New Original In Stock
Optical Sensor Through-Beam 0.197" (5mm) Phototransistor Module, Connector
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Minimum 1
5.0 / 5.0
- (468 Ratings)
GP1S73P
Product Overview
7917240
DiGi Electronics Part Number
GP1S73P-DGManufacturer
Sharp Microelectronics
GP1S73P
Description
SENSOR OPT SLOT PHOTOTRANS MODULInventory
5578 Pcs New Original In Stock
Optical Sensor Through-Beam 0.197" (5mm) Phototransistor Module, Connector
Quantity
Minimum 1
Minimum 1
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GP1S73P Technical Specifications
Category
Optical Sensors, Photointerrupters - Slot Type - Transistor Output
Packaging
-
Series
-
Product Status
Obsolete
Sensing Distance
0.197" (5mm)
Sensing Method
Through-Beam
Output Configuration
Phototransistor
Current - DC Forward (If) (Max)
50 mA
Current - Collector (Ic) (Max)
20 mA
Voltage - Collector Emitter Breakdown (Max)
35 V
Response Time
3µs, 4µs
Operating Temperature
-25°C ~ 85°C
Mounting Type
Snap-In
Package / Case
Module, Connector
Type
Unamplified
Datasheet & Documents
Datasheets
Download GP1S73P Product Specification (PDF)
Design Resources
Development Tool Selector
HTML Datasheet
GP1S73P-DG
Environmental & Export Classification
RoHS Status
RoHS non-compliant
Moisture Sensitivity Level (MSL)
1 (Unlimited)
ECCN
EAR99
HTSUS
8541.49.8000
Additional Information
Other Names
425-1059-5
Standard Package
50
Reviews
5.0/5.0-(Show up to 5 Ratings)
December 02, 2025
I am grateful for their quick turnaround times whenever I have urgent needs.
December 02, 2025
The support team’s professionalism makes working with DiGi Electronics a pleasure.
December 02, 2025
DiGi Electronics' tracking system is transparent and accurate, giving me peace of mind.
December 02, 2025
The durability of their products gives me confidence, and their delivery is consistently fast.
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Frequently Asked Questions (FAQ)
Can the GP1S73P optical sensor be used in a dusty industrial environment without additional protection, and what are the long-term reliability risks?
The GP1S73P is an unamplified through-beam phototransistor module with no IP rating or sealed optics, making it vulnerable to dust and particulate accumulation over time. In dusty environments, debris can block the optical path between the emitter and detector, leading to false negatives or complete failure. For reliable operation in such conditions, you must install the GP1S73P within an IP54 or higher enclosure with filtered optical windows. Without protection, accelerated degradation and intermittent sensing are likely, especially near machinery or conveyor systems where airborne particles are common.
Is the GP1S73P suitable as a drop-in replacement for the OPB852 in a 5V industrial encoder application, and what design changes might be needed?
While the GP1S73P and OPB852 are both 5mm through-beam optical sensors, they are not direct drop-in replacements due to differences in output configuration and response time. The GP1S73P uses a phototransistor output with a 3–4µs response, which is slower than the OPB852’s phototransistor with typical 2µs response. In high-speed encoder applications, this delay could cause missed pulses. Additionally, the GP1S73P has a maximum collector current of 20mA versus OPB852’s 50mA, requiring verification of pull-up resistor values to ensure proper logic levels at 5V. You may need to adjust the load resistor and validate timing margins under actual operating conditions.
What are the risks of using the GP1S73P in a high-humidity outdoor application, and how does its non-RoHS status affect long-term reliability?
The GP1S73P is RoHS non-compliant, which typically indicates the presence of lead-based solder or other legacy materials that may be more prone to corrosion in high-humidity environments. Combined with its module-style connector (not hermetically sealed), prolonged exposure to moisture can lead to contact oxidation or internal condensation, degrading signal integrity over time. Although it has an MSL of 1 (unlimited floor life), this only applies to dry storage—not operational humidity. For outdoor use, apply conformal coating to the connector and electronics, and avoid direct exposure to rain or condensation to mitigate failure risk.
How does the GP1S73P’s 35V collector-emitter breakdown voltage limit its use in 24V industrial control systems with inductive loads?
The GP1S73P’s 35V maximum collector-emitter breakdown voltage leaves minimal margin in 24V systems, especially when driving inductive loads like relays or solenoids that can generate voltage spikes during switching. Without proper flyback protection, transient voltages exceeding 35V can permanently damage the phototransistor. To safely use the GP1S73P in such environments, add a flyback diode across the load and consider a TVS diode or Zener clamp (e.g., 33V Zener) at the collector to suppress transients. Always derate the voltage by at least 20%—so 28V max—for reliable long-term operation.
Can the GP1S73P be reliably used in a safety-critical position sensing application, such as a machine guard interlock, given its obsolete status and lack of amplification?
The GP1S73P is not recommended for safety-critical applications due to its obsolete status, lack of diagnostic features, and unamplified analog output, which offers no built-in fault detection or signal validation. Safety interlocks require redundancy, self-test capability, and compliance with standards like ISO 13849, which the GP1S73P does not support. Additionally, being obsolete increases long-term supply risk and eliminates manufacturer support. For new designs, consider modern alternatives like the TCST2103 or EE-SX199, which offer better reliability, faster response, and are actively supported. If you must use the GP1S73P, implement external monitoring (e.g., watchdog circuit) and redundant sensing paths to mitigate failure modes.
Quality Assurance (QC)
DiGi 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.
GP1S73P CAD Models
Sharp Microelectronics GP1S73P PCB symbols & footprints
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