Safety Issues with Counterfeit Bourns® Trimmers!

RIVERSIDE, CA, July 1, 2005

Customers Beware!

Bourns, Inc. has witnessed an increase in the availability of counterfeit and cloned Bourns® trimming potentiometers worldwide. Purchasers of counterfeit or cloned trimmers should be aware of the following risks:

  1. Counterfeit and Clone Manufacturers may not abide by RoHS legislation or provide compliant product;
  2. Counterfeit Manufacturers do not abide by national and international laws protecting registered trademarks;
  3. Counterfeit and Clone Manufacturers likely will not be willing to provide material data sheets or disclose third party material declarations; and
  4. Counterfeit and Clone Manufacturers likely will not have reliable information on newly required tin whisker testing results.
Purchasers of counterfeit or cloned trimmers probably are not aware whether the material used in counterfeit or cloned trimmers complies with applicable safety standards. Any use of non-compliant material should be of significant concern to purchasers of counterfeit or cloned trimmers. For example, we have posted below a video of flammability testing of a genuine Bourns® trimmer and a counterfeit trimmer. This video clearly shows that the housing material in the counterfeit trimmer does not comply with UL-94V0 requirements for flammability resistance thus creating a potentially unsafe condition.

Trimmer Flammability Testing


Genuine Bourns® Product

For our customers' protection, Bourns recommends that all customers purchase Bourns® products only from authorized Bourns distributors to ensure delivery of genuine products. Authorized Bourns Distributor links are located on the Bourns website at Sales Locations.

Please feel free to contact technical support for more information.


Bourns — 是電子零組件業界的龍頭製造供應商,公司總部位於美國加州的河邊市,其產品包含:位置與速度傳感器、電路保護解決方案、磁性組件、微電子模組、面板控制器及電阻產品,服務產業涵蓋汽車、工業、消費、通信、非關鍵性的生命支持醫療(低/中風險)、音頻以及其他各種市場。如需了解更多的公司與產品訊息,歡迎上公司網站查詢


† Bourns®產品並非設計用於“救生”、“性命攸關”或“維持生命”應用,也不適用於Bourns®產品故障可能導致人身傷害或死亡的任何其他應用。請參閱法律免責聲明

Annette Keller
Keller Communication
(949) 947-7232
陳僑芬 Josephine Chen
Bourns Asia Pacific, Inc