The UM66T32 Melody Generator IC is a compact, low-power sound IC designed to generate the classic Waltz / Coo Coo Waltz melody when powered. Packaged in a TO-92 form factor, it is ideal for toys, greeting cards, novelty electronics, alarms, and DIY audio projects.

Key Features:

• Pre-programmed Melody: Waltz / Coo Coo Waltz
• Simple Operation: Minimal external components required
• Low Power Consumption: Suitable for battery-operated circuits
• Compact Package: TO-92 for easy PCB and breadboard mounting
• Stable Audio Output: Consistent melody playback on power-up

Specifications:

• IC Type: Melody Generator
• Model: UM66T32
• Melody: Waltz / Coo Coo Waltz
• Package: TO-92
• Operating Voltage: 3V – 4.5V DC (typical)
• Output: Square-wave audio signal (use with amplifier or buzzer)
• Current Consumption: Very low

Applications:

• Musical greeting cards
• Toys and novelty sound devices
• Clock chimes and alarms
• Educational electronics and hobby projects

Datasheet: Click Here

NOTE: ZL66, UM66, FT66 and TA66 are equivalents of same IC from different manufacturers