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Components
Crystal Load Capacitor CalculatorResistor Color CodeInductor Color CodeSMD Resistor CodeResistor Min/Max CalculatorCapacitor Marking CodeCapacitor Derating CurvesJunction Temperature Calculator
Design
Reactance / Resonance CalculatorLogic Level Compatibility CheckerVoltage DividerPull-up / Pull-downOhm's Law CalculatorLED Resistor CalculatorZener Diode CalculatorSeries / Parallel ResistorsSeries / Parallel CapacitorsRC / RL Filter Calculator555 Timer CalculatorCapacitor ChargeBattery Life CalculatorRTD Measurement LabOperational AmplifierADC/DAC CalculatorBER Confidence Level
Pinout & Connectors

Cable

Cable Voltage DropAWG Wire Size
Documentation
Crystal Load Capacitance Design GuideLogic Level Compatibility Guide: CMOS, TTL & Noise MarginsUnderstanding Reactance and LC/RLC ResonanceUnderstanding Unix Timestamp and Epoch TimeUnix Timestamps in Embedded Systems, APIs and DatabasesMTBF versus Service LifeMicrostrip & Stripline ImpedanceResistivity TableRadio FrequenciesFrequency Tolerance: PPM & HzE-series Resistor ValuesResistor Tolerance & TCRCapacitor Voltage & Temperature DeratingCapacitor Technologies ComparisonSI Prefixes & Engineering NotationIP (Ingress Protection)PCB Copper Thickness & WeightBER Confidence Testing
Calculators
Wavelength CalculatorPPM to Hz CalculatorUnix Timestamp / Epoch Converter

Converters

Decibel ConverterRMS Convertern/p/µ/m/k/M/G ConverterPCB Copper Weight: oz ↔ µm

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Technical library

Pinouts & connectors

Quickly find the pinout of the most commonly used electronic connectors and interfaces.

18references across 4 categories

Only published, reviewed reference sheets are listed here. New pinouts are added when a complete sheet is available.

Peripherals

Common connectors for peripherals and accessories.

USB Type-AUSB Type-BUSB Type-CSD Card

Video

Digital and analog video connections.

HDMI Type AVGA DE-15DisplayPort

High-speed interfaces

High-speed buses and interfaces for electronic boards.

M.2 Key Compatibility GuidePCIe M.2 — Key APCIe M.2 — Key A+EPCIe M.2 — Key BPCIe M.2 — Key B+APCIe M.2 — Key B+EPCIe M.2 — Key B+MPCIe M.2 — Key EPCIe M.2 — Key M

Ethernet interface

Copper Ethernet wiring, 8P8C connectors, and PoE power delivery.

Ethernet RJ45 — T568A & T568BEthernet PoE