DC-DC Converters ZSSC4175DE4 ESR WQFN-24_L4.0-W4.0-P0.50-BL-EP2.5 LCSC Part Number: C1848725 JLCPCB Part Class: Extended Part Manufactured by RENESAS(瑞萨)/IDT

Linear Voltage Regulator IC Positive Fixed 1 Output 600mA SOT-25 3.3V LDO AP2112K-3.3 The AP2112K-3.3TRG1 is a low dropout (LDO) linear voltage regulator designed to provide a stable 3.3V output from a higher input voltage. It is optimized for low noise, high power supply rejection ratio (PSRR), and low quiescent current, making it suitable for battery-powered and noise-sensitive applications. The device features current limiting and thermal shutdown protection, ensuring reliable operation under fault conditions. It is commonly used in portable electronics, RF modules, microcontroller power supplies, and other low-power systems. Key Features Fixed output voltage: 3.3V Output current: up to 600 mA Low dropout voltage: ~250 mV at 300 mA load High PSRR: up to 70 dB at 1 kHz Low quiescent current: typically 55 µA Stable with low ESR ceramic capacitors Built-in overcurrent protection Thermal shutdown protection Fast transient response Absolute Maximum Ratings Input Voltage (VIN): up to 6.5 V Output Current: Internally limited Operating Junction Temperature: -40°C to +125°C Storage Temperature: -65°C to +150°C Electrical Characteristics (Typical values unless otherwise specified) Output Voltage Accuracy: ±2% Dropout Voltage: 250 mV @ 300 mA 400 mV @ 600 mA Line Regulation: 0.05%/V Load Regulation: 0.2% Quiescent Current: 55 µA Shutdown Current: <1 µA PSRR: 70 dB @ 1 kHz 45 dB @ 10 kHz Pin Configuration (SOT-23-5 / SC-70-5) VIN – Input voltage GND – Ground EN – Enable (active high) NC – No connection VOUT – Regulated output (3.3V) Package Information Package Type: SOT-23-5 (TRG1 suffix indicates tape & reel) Mounting: Surface mount Small footprint suitable for compact PCB layouts Typical Applications Battery-powered devices Wireless modules (Wi-Fi, Bluetooth, RF) Microcontroller and FPGA power supplies Portable consumer electronics Sensor and analog circuits requiring low noise Compliance & Reliability RoHS compliant Lead-free package Designed for high reliability and long operational life #CommonPartsLibrary #IntegratedCircuit #PowerManagement #LinearRegulator #VoltageRegulator

16 MHz ±15ppm Crystal 8pF 60 Ohms 4-SMD, No Lead The CX3225SB16000D0GZJC1, manufactured by Kyocera AVX, is a 16.000 MHz crystal oscillator element designed to provide precise frequency reference for microcontrollers, communication ICs, and digital systems. It belongs to the CX3225SB series, known for compact size and stable frequency performance. Key Characteristics Type: Quartz crystal (passive frequency component) Frequency: 16 MHz Load Capacitance: 8 pF Frequency Stability: ±15 ppm Frequency Tolerance: ±15 ppm Operating Mode: Fundamental ESR (Equivalent Series Resistance): ~60–80 Ω Mechanical Details Package: 4-SMD, no-lead (surface mount) Size: 3.2 mm × 2.5 mm (3225 package) Height: ~0.6 mm (low profile) Operating Conditions Temperature Range: −25°C to +85°C Mounting Type: Surface mount (SMT) Function (Simple Explanation) This component: Generates a stable clock signal (16 MHz) Acts as the timing reference for MCUs, processors, or RF modules Works together with internal oscillator circuits inside ICs Microcontroller clock sources (e.g., ESP32, STM32, AVR) Communication modules Embedded systems Consumer electronics IoT devices #CommonPartsLibrary #Crystal #Oscillator #resonator

1M Ohms ±1% 0.25W, 1/4W Chip Resistor 0603 (1608 Metric) Automotive AEC-Q200, Pulse Withstanding Thick Film #CommonPartsLibrary #Chip-Resistor #Surface-Mount #ESR

3.5 F (EDLC) Supercapacitor 5.5 V Radial, Can 160mOhm @ 1kHz 1000 Hrs @ 65°C Supercapacitor – SCM Series (3.5F, 5.5V) General Information Manufacturer: Sruite Electronic Technology (US) Series: SCM Part Status: Active Packaging: Bulk Electrical Characteristics Capacitance: 3.5 F Tolerance: -20% / +80% Rated Voltage: 5.5 V ESR (Equivalent Series Resistance): 160 mΩ @ 1 kHz Reliability Lifetime: 1000 hours @ 65°C Mechanical Characteristics Mounting Type: Through Hole Termination: PC Pins Package Type: Radial, Can Physical Dimensions Lead Spacing: 5.50 mm (0.217") Body Size (L × W): 20.0 mm × 10.0 mm Height (Max): 22.0 mm (0.866") Environmental Conditions Operating Temperature Range: -25°C to +70°C Compliance / Classification Grade: Not specified Qualification: Not specified #CommonPartsLibrary #EDLC #SCM

Linear Voltage Regulator IC Positive Fixed 1 Output 150mA SOT-23-5 LP2985IM5-2.7 is a low-dropout (LDO) linear voltage regulator designed to provide a stable 2.7 V output with very low quiescent current and excellent noise performance. It is optimized for battery-powered and noise-sensitive applications, offering high power supply rejection ratio (PSRR) and fast transient response. The device is housed in a compact SOT-23-5 package, making it ideal for space-constrained designs. Key Features Fixed 2.7 V output voltage Low dropout voltage Low quiescent current (IQ) High PSRR for noise-sensitive applications Stable with low ESR ceramic capacitors Thermal shutdown and current limit protection Small SOT-23-5 package RoHS compliant Electrical Characteristics Output Voltage: 2.7 V (fixed) Output Voltage Accuracy: ±1.5% (typical) Maximum Output Current: 150 mA Dropout Voltage: ~280 mV at 150 mA (typical) Quiescent Current (IQ): ~65 µA (typical) Line Regulation: 0.04%/V (typical) Load Regulation: 0.2% (typical) PSRR: Up to 70 dB (at low frequency) Operating Input Voltage Range: 2.5 V to 16 V Operating Temperature Range: -40°C to +125°C Mechanical Characteristics Package Type: SOT-23-5 (DBV) Mounting Type: Surface Mount Pin Count: 5 pins Approximate Dimensions: 2.9 mm × 1.6 mm Pin Configuration (Typical) IN: Input voltage GND: Ground OUT: Regulated output (2.7 V) EN: Enable (active high) BYPASS: Noise reduction / bypass capacitor connection Performance Characteristics Excellent output noise performance (low-noise design) Fast transient response to load changes Stable with small ceramic capacitors (typically 1 µF) Suitable for RF and analog circuits Applications Battery-powered devices Portable electronics RF and wireless modules Sensors and analog circuits Microcontroller power supplies #CommonPartsLibrary #IntegratedCircuit #PowerManagement #voltage-regulator #LDO #LP3985

Aluminum Organic Polymer Capacitors 20volts 56uF ESR 30mohm

10uF 16V 2Ω@100kHz ±10% CASE-B-3528-21(mm) Tantalum Capacitors ROHS Higher voltage ratings and tighter tolerance product including ESR may be substituted within the same size at KEMET's option. Voltage substitution will be marked with the higher voltage rating. Substitutions can include better than series. T491B106K016AT CAP-SMD_L3.5-W2.8-R-RD LCSC Part Number: C110050 JLCPCB Part Class: Extended Part Manufactured by KEMET(基美)

100uF 25V 300mΩ ±10% CASE-X-7343-43(mm) Tantalum Capacitors ROHS Higher voltage ratings and tighter tolerance product including ESR may be substituted within the same size at KEMET's option. Voltage substitution will be marked with the higher voltage rating. Substitutions can include better than series. T491X107K025AT CAP-SMD_L7.3-W4.3-RD LCSC Part Number: C132558 JLCPCB Part Class: Extended Part Manufactured by KEMET(基美)

100uF 10V 1.2Ω@100kHz ±10% CASE-B-3528-21(mm) Tantalum Capacitors ROHS Higher voltage ratings and tighter tolerance product including ESR may be substituted within the same size at KEMET's option. Voltage substitution will be marked with the higher voltage rating. Substitutions can include better than series. T491B107K010AT CASE-B_3528 LCSC Part Number: C122271 JLCPCB Part Class: Extended Part Manufactured by KEMET(基美)

220uF 10V 900mΩ@100kHz ±10% CASE-C-6032 Tantalum Capacitors ROHS Higher voltage ratings and tighter tolerance product including ESR may be substituted within the same size at KEMET's option. Voltage substitution will be marked with the higher voltage rating. Substitutions can include better than series. T491C227K010AT CAP-SMD_L6.0-W3.2-R-RD LCSC Part Number: C122293 JLCPCB Part Class: Extended Part Manufactured by KEMET(基美)

22uF 50V 600mΩ ±10% CASE-X-7343-43(mm) Tantalum Capacitors ROHS Higher voltage ratings and tighter tolerance product including ESR may be substituted within the same size at KEMET's option. Voltage substitution will be marked with the higher voltage rating. Substitutions can include better than series. T491X226K050AT CAP-SMD_L7.3-W4.3-R-RD LCSC Part Number: C696800 JLCPCB Part Class: Extended Part Manufactured by KEMET(基美)

330uF 6.3V 40mΩ@100kHz ±20% CASE-B-3528-21(mm) Tantalum Capacitors ROHS Higher voltage ratings and tighter tolerance product including ESR may be substituted within the same size at KEMET's option. Voltage substitution will be marked with the higher voltage rating. Substitutions can include better than series. T520B337M006ATE040 CAP-SMD_L3.5-W2.8-R-RD LCSC Part Number: C696806 JLCPCB Part Class: Extended Part Manufactured by KEMET(基美)

25 MHz ±30ppm Crystal 20pF 50 Ohms 4-SMD, No Lead The FL2500283Z is a 25 MHz surface-mount quartz crystal manufactured by Diodes Incorporated, part of the FL series (SaRonix-eCera™). It is designed for use as a stable clock reference in digital circuits such as microcontrollers, communication modules, and embedded systems. This crystal uses an AT-cut resonator inside a compact 3.2 mm × 2.5 mm (3225) ceramic package, making it suitable for high-density PCB designs and modern electronics. Key Features Standard Frequency 25 MHz fundamental mode crystal Compact SMD Package 3.2 × 2.5 mm (3225), 4-pad configuration Height ~0.68–0.75 mm AT-Cut Quartz Technology Provides good frequency stability and low drift Frequency Stability & Tolerance Typical: ±10 to ±30 ppm Load Capacitance Typically 20 pF Low ESR Around 50–60 Ω, suitable for MCU oscillator circuits Wide Operating Temperature Common range: -20°C to +70°C (some variants up to -40°C to +125°C) Surface-Mount Compatibility Ideal for automated assembly and reflow soldering RoHS / Lead-Free Environmentally compliant design Typical Applications Microcontroller clock (STM32, ESP32, AVR, etc.) Communication modules (Wi-Fi, Ethernet, RF) Embedded systems Consumer electronics Industrial control boards #Crystal #Oscillator #Resonator #SaRonix-eCera™ FL

62 Ohms ±1% 0.75W, 3/4W Chip Resistor 1206 (3216 Metric) Automotive AEC-Q200, Pulse Withstanding Thick Film #CommonPartsLibrary #Resistor #Chip_Resistor #ESR

ESR03EZPF9762 R0603 LCSC Part Number: C510096 JLCPCB Part Class: undefined Manufactured by ROHM(罗姆)

Chip Resistor - Surface Mount ESR03EZPF62R0 R0603 LCSC Part Number: C4018574 JLCPCB Part Class: Extended Part Manufactured by ROHM(罗姆)

Resistors ESR03EZPJ620 R0603 LCSC Part Number: C253340 JLCPCB Part Class: Extended Part Manufactured by ROHM(罗姆)