Knowles (UK) Ltd ( formerly Syfer Technology Limited ) is a premier global source for application specific multilayer ceramic capacitors and EMI suppression filters.
With locations in Norwich, UK, Suzhou, China, Cazenovia, USA, Valencia, USA, Penang, Malaysia, Knowles offer MLCCs specialising in High Voltage, High Q, High Temperature, High Reliability. Also custom versions, radial leaded types and a range of EMI Filters.
They can offer Multilayer Ceramic Capacitor manufacture using a unique "Wet Process" and have applications engineering support, test facilities including high rel, high frequency, high voltage, custom product design.
Knowles consider their strengths to be their flexibility, expertise in high voltage MLCCs and short lead-times.
DMTL initiated their relationship with Syfer back in the late 1980’S, operating as a direct customer, but afforded traceability and superb technical support by the Norwich facility.
Syfer and DMTL, based on escalating UK Designs agreed the appointment as UK Design Distributors ,with an accent on DMTL’s part toward Filtering, Safety Cap and Hi Voltage development.
As Syfer have grown, so too have DMTL. Sharing the ethos of High Customer Service and flexibility in supporting customer design, DMTL and SYFER are now extremely successful in many UK applications, these include, Aviation (DMTL carry IECQ CECC qualification for Syfer products), Lighting, Power Supply and most recently Hybrid Electric Vehicles, supporting with both Capacitor and Filter products.
Date of Incorporation
Number of Employees
Factory Floor Space
1,771,000 sq ft
ISO 9001, ISO 14001, OHSAS 18001, IECQ-CECC, AEC-Q200, UL, TÜV, RoHS and REACH compliance.
A range of MLCCs including ranges to 12kV, safety certified capacitors, high voltage/high capacitance StackiCap, IECQ-CECC, AEC-Q200, High Q, high temperature, non-magnetic and radial leaded. EMI filter ranges include 3 terminal chips, surface mount Pi filters, X2Y integrated passives, panel mount threaded and solder-in devices.