PESD3V3V1BLYL

PESD3V3V1BLYL is a 3.3 V ESD protection diode array (PESD3V3V1 family) from Nexperia. It protects a 3.3 V I/O line (typically single-channel) by clamping electrostatic transients to the rails (Vcc = 3.3 V and GND) with very fast response and low input capacitance, preserving signal integrity. It’s used to shield microcontrollers, sensors, and interfaces (I2C/SPI/UART, USB 2.0 at 3.3 V, etc.) in compact SMT packages (BLYL code indicates the package). How it works: during an ESD event, the diode array provides a discharge path to Vcc or GND, keeping the protected node within safe limits. For exact specifications—standoff voltage, ESD rating, capacitance, and pinout—refer to the official datasheet for this part variant.

Common equivalents are other low‑capacitance, unidirectional 3.3 V TVS diodes in the same SOD‑523 footprint. Examples: Nexperia PESD3V3V1B (other suffixes), Semtech RClamp0524 (USB/3.3 V ESD clamp family), ON Semiconductor ESD3V3xx series, and Littlefuse SP305x/ CDSOD523 series. Always verify standoff voltage, breakdown, clamping, capacitance and package dimensions against the PESD3V3V1BLYL datasheet before substituting.

PESD3V3V1BLYL is a low-capacitance ESD protection diode array for 3.3 V lines. Key features:
- 3.3 V nominal working voltage
- Likely 1-channel (single data line) ESD protection to GND
- Ultra-low input capacitance (preserves high-speed signals)
- Very fast response time; clamps quickly during ESD events
- Low leakage and low dynamic resistance; low clamping voltage
- Small SMD package (code BLYL)
- RoHS compliant; halogen-free
- Wide operating temp range (typical -40°C to 125°C)
- Suitable for protecting data/interfaces such as USB, I2C/SPI, MIPI, LVDS, etc.
Note: exact channel count, capacitance, and ESD ratings vary by variant; consult the datasheet for precise specs.

PESD3V3V1BLYL is a 2‑pin device (anode and cathode). It is a low‑capacitance, unidirectional TVS/ESD protection diode designed to protect a single I/O/data line to ground in 3.3 V systems (transient/ESD clamping).

Manufacturer: Nexperia.
Type of company: Nexperia is a Netherlands‑based global semiconductor manufacturer that specializes in discrete components, MOSFETs, logic ICs and protection devices (including ESD protection diodes such as the PESD series).

PESD3V3V1BLYL is a 3.3V ESD protection diode array. It protects 3.3V logic I/O lines from electrostatic discharge and EFT surges while preserving signal integrity on high-speed lines. Typical applications: USB data lines and other 3.3V interfaces, I2C, SPI, UART buses, camera and display interfaces, microcontroller peripherals, and sensors. Suitable for mobile/portable devices, wearables, digital cameras, and consumer electronics, as well as automotive and industrial equipment that use 3.3V logic. Placed near connectors or I/O pins to clamp ESD to safe levels with minimal added capacitance.

PESD3V3V1BLYL is supplied in a SOD523 (small SOD/SC-70 style) surface-mount package. The "LYL" suffix denotes tape-and-reel packaging.