The Texas Instruments ULN2004ANE4 is a 7-channel Darlington transistor array from the ULN2004A series, designed for high-current, high-voltage switching of inductive loads such as relays, solenoids, and stepper motors. Each channel is rated for 50 V collector-emitter and 500 mA continuous output current, with integral suppression diodes for inductive kickback — a standard configuration for driving 5 V and 12 V relay coils directly from logic-level inputs.
Supplied in Bulk (tube) packaging, the DIP-16 through-hole package suits prototyping, low-volume production, and rework environments where a socket or soldered insertion is preferred over surface-mount. The 0.100-inch pin pitch and standard 0.300-inch row spacing match common perfboard and PCB layouts — no footprint adjustment needed for a drop-in replacement of earlier ULN2003/2004 variants.