Transistors Suppliers

As a professional China Transistors manufacturers and suppliers in china called TOPDIODE. High quality Transistors are very popular in all countries.Our products not only have passed REACH and ROHS certification audit,but also have our own brand. In addition to providing free samples, we can also provide price lists and quotations. Our durable products support bulk,you can buy in stock and get low price. Welcome to buy made in china and advanced products from our factory.

Topdiode Group is an ISO 9001: 2015 Transistors China factory and Transistors China supplier since 1995, including 4 manufacturing sites with 780 employees & additional about 80 technical experts. After 26 years development, Topdiode Group has became a very famous & reliable switching diode China manufacturer & quality is recognized by international companies such as GE, PNE(Philips’s OEM) so on. We export to USA to USA, Canada, Brazil, Argentina, Mexico, South Africa, Tunisia, New Zealand, Australia, Germany, Italy, France, UK, Poland, Bulgaria, Spain, Portugal, Russia, Belarus, Ukraine, Korea, Vietnam, Singapore, Malaysia, Indonesia, India, Philippine, Thailand etc. Our market position is to replace Littelfuse, Bourns, Diodes, Microchip, STMicroelectronics, On Semi, Taiwan Semiconductor etc with much better price, much fast lead time and reliable quality.


A transistor is a type of a semiconductor device that can be used to both conduct and insulate electric current or voltage. A transistor basically acts as a switch and an amplifier. In simple words, we can say that a transistor is a miniature device that is used to control or regulate the flow of electronic signals. Topdiode offer Transistors as following (part of):
BC817~BC850 NPN Silicon Epitaxial Transistor general purpose
MMBT491A NPN Silicon Epitaxial Planar Transistor
MMBT8050  NPN Silicon Epitaxial Planar Transistor
MMBT9013 NPN Silicon Epitaxial Planar General Purpose  Transistors
BC817W~ BC848W 45 V, 500 mA NPN general-purpose transistors
MMBT8050W  NPN Silicon Epitaxial Planar General Purpose
BC547 NPN Epitaxial Silicon General Purpose Transistor
MMBT2222 NPN Epitaxial Silicon General Purpose Transistor
MMBT3904 NPN Epitaxial Silicon General Purpose Transistor
2N2907 NPN Epitaxial Silicon General Purpose Transistor


Topdiode Transistors are RoHS, Reach Compliant; Halogen free(on request) and Metal Conflict Free. Our delivery is fast to 3-4 weeks for regular parts. We are strong in complete management, strict quality control system, and excellent sales service. Sales representative & distributors are all over the world in order to better serve our customers. Recent years, many diodes are in shortage, could you please send us emails and RFQ. We can help you for cost down and solve your shortage problem.