If you need a high-quality lamp for your smaller devices or fixtures, a JD or JC type halogen bulb should be your lamp of choice. ProLighting has both JC and JD halogen lamps in stock at very competitive prices. If you have ever wondered what are JD and JC type halogens, the answer is that these small lamps are most commonly used in smaller applications such as chandeliers, indicator lights and the aforementioned desk lamps. JC lamps are the low voltage version of these small lamps while the JD bulbs have higher voltages. The JC bulbs at ProLighting are 12V in contrast to the JD bulbs that are 120V. Note that the bases of the bulbs also vary. For example, you can get JD bulbs with mini candelabra bases or bayonet bases. When shopping for these JC and JD lamps you will need to make sure you select lamps with the correct base for your device. If you have questions about these lamps, you can submit a question to ProLighting directly from the product page of the specific lamp. Fast replies are guaranteed.