Electronics Code Lookup

🔍 Electronics Code Lookup and Calculator Tool

Electronic Parts Calculator is a simple and efficient tool for quickly identifying the specifications of common electronic components based on their part numbers. This Lookup / calculator lets users look up details for resistors, capacitors, diodes, transistors, and voltage regulators with ease. Whether you're a student, hobbyist, or professional, just input the part code (e.g., 1N4007, BC547, 7805) to instantly view voltage, current, type, and usage data. It's a handy reference for quick checks and component verification during electronics repair, design, or assembly.

Resistor Value (Code or Color Bands)

Color Band Meaning:
1^st Band = 1^st digit | 2^nd Band = 2^nd digit | 3^rd Band = Multiplier | 4^th Band = Tolerance
SMD Examples:
10K = 10,000 ohms (10 × 1,000)
4R7 = 4.7 ohms (R means decimal)
1M = 1,000,000 ohms (1 × 1,000,000)

Capacitor Code

Examples:
104 = 100,000 pF = 100nF
472 = 4,700 pF = 4.7nF
Code format: First 2 digits + multiplier (in picofarads)

Diode Part Number

Examples:
1N4007 = General purpose rectifier diode
1N4148 = Fast-switching small signal diode
Z1, Z2 = Zener diodes (voltage varies)

Transistor Part Number

Examples:
2N2222 = NPN bipolar transistor
BC547 = NPN general-purpose transistor
2N2907 = PNP transistor
First digits often indicate type (2N = USA, BC = Europe)

Voltage Regulator Lookup

Examples:
Linear Regulators (e.g., 78xx series)= ideal for fixed, stable voltage for low-power circuits.
Adjustable Regulators (e.g., LM317)= useful for flexibility in output voltage.
Low Dropout Regulators (e.g., LD1117, AMS1117)= efficient, used in battery-powered devices.
Switching Regulators / Buck Converters (e.g., LM2596, LM2575)= Efficient