Yl105 Datasheet 🎯 Limited

The LM393 output is open collector. The datasheet usually notes this, meaning you can pull it up to a different voltage (e.g., 3.3V for a Raspberry Pi) than the module’s VCC (5V). This is a major plus for mixed-voltage systems.

int hallPin = 2;
int ledPin = 13;
int hallState = 0;
void setup() 
pinMode(hallPin, INPUT);
pinMode(ledPin, OUTPUT);
Serial.begin(9600);

void loop() 
hallState = digitalRead(hallPin);
if (hallState == LOW)  // active low typical
digitalWrite(ledPin, HIGH);
Serial.println("Magnet detected");
 else 
digitalWrite(ledPin, LOW);
delay(100);

Overall Rating: 7.5/10

The YL-105 datasheet is adequate for its intended audience (hobbyists, students, makers). It fails to document temperature stability, noise performance, or long-term drift, but for $1-2 per module, you get remarkable functionality.

The good: Dual output, easy to use, wide voltage range, open-collector digital out. The bad: No thermal specs, mediocre linearity, PCB lacks shielding, sparse documentation.

Pro Tip: Buy 3-5 units and characterize each one with a known magnet. Use the analog output with a moving average filter in software. For the digital output, add a 10k pull-up resistor externally even if the board has one—it improves noise margin.

If you need a reliable, documented, industrial-grade Hall sensor, look elsewhere (e.g., TI DRV5055). But for 95% of Arduino projects, the YL-105 is a workhorse that punches above its weight.

The YL105 refers to a specific configuration of Alpha Wire's FIT-221V series. It is a high-performance, flame-retardant heat shrink tubing designed for reliable insulation and protection in demanding environments. Key Features yl105 datasheet

Flame Retardancy: Meets stringent safety standards (UL VW-1 and CSA OFT), making it ideal for fire-sensitive applications.

Superior Fluid Resistance: Protects internal components against common industrial fluids, oils, and solvents.

Thermal Stability: Engineered to withstand continuous operating temperatures from -55°C to 135°C.

Efficient Shrinkage: Features a 2:1 shrink ratio with a relatively low shrink temperature of 90°C, allowing for fast installation without damaging heat-sensitive parts.

Durable Material: Constructed from irradiated Polyolefin (PO), providing excellent physical strength and longitudinal shrinkage of only

High Dielectric Strength: Provides robust electrical insulation with a rating of 600V. Technical Specifications Specification Material Polyolefin (Irradiated) Color Yellow (YL) Internal Diameter (Supplied) 1.500" (38.10mm) Internal Diameter (Recovered) 0.750" (19.05mm) Wall Thickness (Recovered) 0.040" (1.02mm) Tensile Strength Industry Compliance MIL-Spec: AMS-DTL-23053/5 Class 1 & 3 Safety Standards: UL Standard 224, CSA Standard 198 Environmental: RoHS and REACH compliant

To maximize your supply chain efficiency for defense or industrial projects, you can view procurement details through providers like Brady Europe. For help managing similar electrical CAD projects, tools from IGE+XAO offer specialized software for terminal blocks and wiring diagrams. If you need to manage construction-related materials alongside your electrical components, you might consider mobile solutions like the Condor Formwork App. Additionally, educational resources for specialized technical tutorials are often hosted on platforms like Odysee.

I understand you're asking for a "story" related to the "YL105 datasheet." Since the YL105 (often a phototransistor or similar optoelectronic component) doesn't have a widely known dramatic narrative, I'll craft a short, engaging story that incorporates the technical details you'd typically find in such a datasheet. This is a creative take on how an engineer might interact with that document.

Title: The Ghost in the Phototransistor

Dr. Aris Thorne stared at the circuit board, smoke still curling from a cracked resistor. His prototype—a laser-based intrusion sensor for a museum’s priceless “Sunstone”—had just fried itself for the third time.

“It’s the ambient light,” his assistant, Jenna, said, pointing at the lab’s flickering fluorescent tubes. “Every time the cloud cover changes, your trigger goes haywire.”

Aris slammed the datasheet onto the table. “YL105. NPN Silicon Phototransistor.” He read the lines aloud, as if they held a secret.

“The museum’s new LED emergency lights,” Aris whispered. “They’re deep red. The datasheet warns about ‘false triggering in high-intensity non-IR sources.’”

Jenna grinned. “So the ‘ghost’ tripping our sensor isn’t a thief. It’s a light bulb.”

Using the YL105’s own dark current vs. temperature graph on page 3 of the datasheet, Aris calculated the exact bias resistor needed to ignore the red LEDs. He added a tiny, black heat-shrink tube over the phototransistor—the datasheet’s mechanical drawing showed a 5mm diameter, perfect for a light pipe—to act as an optical bandpass filter.

That night, they tested it. The laser beam broke. The alarm stayed silent. Then a pigeon flew past the loading dock, its shadow triggering the YL105’s rapid 15 µs response—the exact spec from the datasheet’s switching time table.

The alarm screamed. The sunstone was safe.

“Never ignore the fine print,” Aris said, tapping the familiar YL105 datasheet. “It’s not just a list of numbers. It’s the story of what can go wrong—and how to win.” The LM393 output is open collector

The PCB layout (visible in the datasheet’s mechanical drawing) has long, unshielded traces. This makes the module susceptible to EMI from motors or power supplies. The datasheet provides zero guidance on filtering or external capacitors.

A: Since YL105 is a generic module name, no single "official" PDF exists. Use this guide along with the datasheet of the actual Hall IC on your module (e.g., AH3144, SS441A, or OH137).

The 49E sensor has a sensitivity of typically 1.4 mV/G to 2.5 mV/G. The datasheet usually specifies a useful range of ±600 Gauss to ±1000 Gauss. This is excellent for neodymium magnets (detection up to ~2-3 cm) and works reliably with ceramic magnets (~1 cm).

Use YL105 to detect end-stops without mechanical wear. The adjustable threshold ensures reliable triggering at precise distances.

To understand the YL-105, one must first understand the physics it exploits. Turbidity is the cloudiness or haziness of a fluid caused by large numbers of individual particles that are generally invisible to the naked eye.

The YL-105 operates on the principle of Light Extinction/Transmission.

The sensor consists of a waterproof probe containing two key components:

In pure, clear water, the light from the LED travels unimpeded across the gap and strikes the phototransistor, resulting in maximum current flow (lowest resistance). As the water becomes turbid (suspended solids increase), the particles in the water absorb and scatter the light beam. Consequently, less light reaches the receiver.

The Transfer Function: The relationship is inversely proportional: Overall Rating: 7

Note: This contrasts with high-end industrial sensors that use the "nephelometric" method (scattering), where the sensor detects light scattered at 90 degrees. The YL-105’s transmission method is cheaper to manufacture but more susceptible to errors if the optical window becomes dirty.