Yl105 Datasheet -

The is your gateway to a family of high-performance, yellow heat shrink tubing products from Alpha Wire. The YL105 suffix signifies a yellow-colored, 4-foot piece of tubing, found across the FIT®-221 (flexible), FIT®-300 (semi-rigid), and FIT®-221V series. These products are designed for critical electrical insulation, mechanical protection, and environmental sealing in a wide range of industrial, commercial, and consumer electronics applications.

In the world of electronics and microcontroller projects (Arduino, Raspberry Pi, ESP8266, STM32), the ability to control high-power devices—such as lamps, motors, solenoids, and pumps—using low-power logic signals is essential. The is one of the most popular and widely available single-channel relay modules designed precisely for this purpose.

Monitoring voltage thresholds to prevent overcharging. Troubleshooting Tips

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The expected required for your project.

Used in the primary stage of SMPS (Switch Mode Power Supplies) for LED lighting and laptop adapters.

Pass-through logic pin. Governs the primary operational state machines (TX/RX) of the radio module. yl105 datasheet

However, note that many low-cost YL105 modules do maintain true isolation if the jumper JD-VCC is shorted to VCC. For proper isolation:

(in ideal line-of-sight conditions with the PA/LNA version reaching further) -40∘Cnegative 40 raised to the composed with power C +85∘Cpositive 85 raised to the composed with power C Pinout Configuration

Furthermore, standard microcontrollers (like the Arduino Uno or Nano) often feature low-current onboard 3.3V regulators that cap out at 50mA or 150mA. High-power wireless transmissions—especially when using an nRF24L01+ with Power Amplifier and Low Noise Amplifier (PA+LNA) hardware —experience large instant current spikes (often exceeding 115mA). These spikes cause voltage drops, resulting in broken SPI connections, data corruption, or transmission drops. The is your gateway to a family of

Provides stable DC rails for networking hardware. 5. Installation and Design Tips

The internal components of the YL-105 module define its strict mechanical and electrical boundaries. Specification / Value Suppled directly from the microcontroller power rail. Output Voltage Provided via the onboard linear regulator. Onboard Voltage Regulator AMS1117-3.3 (or equivalent) Handles down-regulation and filters voltage ripple. Supported RF Module nRF24L01+ / nRF24L01+PA+LNA Fits the standard 8-pin dual-row headers. Interface Communication Serial Peripheral Interface (SPI) Passes through the native SPI bus lines. Dimensions 26 mm x 19 mm x 12 mm Ideal for space-constrained electronics projects. Core Functions of the YL-105 1. Onboard Voltage Regulation

Meets UL 224 VW-1 and CSA 198 standards (except for clear versions). In the world of electronics and microcontroller projects