Product Overview
Optocoupler / Phototransistor Output IC (Marked “2601 / 2439”)
What it is:
A 4-pin optocoupler IC (likely phototransistor output type), marked “2601 / 2439”. Used for electrical isolation between circuits.
What it’s used for:
Commonly found in power supplies, switching circuits, industrial control systems, and signal isolation applications where safe separation between high and low voltage is required.
Applications:
- Power supplies, signal isolation, switching, PLC/industrial control
Technical Specifications:
| Brand | Unknown (marking suggests older/industrial manufacturer) |
| Part Number | 2601 / 2439 (marking code) |
| Package Type | DIP-4 (Dual Inline Package) |
| Pin Count | 4 pins |
| Mounting Type | Through-hole |
| Technology | Optoelectronic / Isolation |
| Weight | ~0.05 – 0.08 oz per unit |
