JRC4558D IC DIP-8 (CLass-B) Code: 64272937

The JRC4558D (often manufactured by New Japan Radio/NJM) is a highly popular, low-cost dual operational amplifier (op-amp) IC. It is iconic for its widespread use in audio applications, particularly in vintage guitar overdrive/distortion pedals, preamplifiers, and tone controls, revered for its smooth clipping and low-noise characteristics.

Key Specifications & Features

• Amplifiers:2 independent op-amps in a single chip
• Supply Voltage:± 5V to ± 15V (or single supply 3V to 30V)
• Bandwidth:3MHz typical
• Slew Rate:7 V/μs
• Voltage Gain:High DC voltage gain, typically 100 dB
• Input Impedance:Approximately 5 MΩ
• Package Type:8-pin DIP (Dual In-Line Package) or SOP (Small Outline Package)

Pinout Configuration (8-Pin)

• Pin 1:Output A
• Pin 2:Inverting Input A
• Pin 3:Non-inverting Input A
• Pin 4:Ground (or V-)
• Pin 5:Non-inverting Input B
• Pin 6:Inverting Input B
• Pin 7:Output B
• Pin 8:Power Supply (V+)

Common Applications

• Guitar Effects:Legendary for its use in the Ibanez Tube Screamer and countless other overdrive circuits.
• Audio Processing:Pre-amps, mixing consoles, active filters, and graphic equalizers.
• Signal Conditioning:General-purpose DC amplification and voltage follower circuits.

Alternatives and Replacements

If you are designing or repairing circuits and need an alternative, the JRC4558D can often be swapped with the LM4558, RC4558, TL072, NE5532, or the more modern NJM4580.