IQD Crystal can trace its origins in Crewkerne to the end of 1973, when entrepreneur Hugh Robinson took his young company Interface International into the quartz crystal business servicing a contract for low frequency crystals in filters for FDM equipment, with Cable & Wireless.
Operating from an office in Market Street, Crewkerne, Somerset, rent was just £1 per week and much of the trade in the early days was connected to the Ham Radio business and PMR (Private Mobile Radio).
Through a network of chance meetings and shrewd appointments, quartz crystal sales grew and the portfolio of products expanded to include packaged oscillators to service the VHF and UHF repeater stations popping up in the early 70s.
Development of the business has taken many turns, including significant growth and the necessary moving of office and warehousing premises. In fact in 1997, IQD appeared in the UK’s top businesses for growth. Fast forward through another 20 years and through a few business acquisitions, in 2017 IQD was acquired by German electronics giant, Wurth Elektronik eiSos, a subsidiary of the larger Wurth Group.
Today IQD continues to enjoy remarkable growth becoming a significant global supplier of frequency control products across a wide range of industries and applications from national defence projects, consumer electronics, in medical wearables, transport navigation, 5G network technology and IoT applications, to name just a few.
IQD的起源可以追溯到1973年底，當時企業家休·羅賓遜(Hugh Robinson)將他年輕的公司Interface International帶入石英晶體業務，為FDM設備濾波器中的石英晶體提供服務，包括有線和無線。
在薩默塞特郡克魯肯市市場街的一間辦公室里，每周租金只有1英鎊，早期的大部分交易都與業余無線電業務和PMR(私人移動無線電)有關。
通過偶然的會議和精明的約會，石英晶體的銷售增長，產品組合擴大到包括封裝振蕩器，以服務于70年代初出現的VHF和UHF中繼站。
業務的發展經歷了許多轉折，包括顯著的增長和必要的辦公和倉儲場所的移動。事實上，在1997年，IQD出現在英國增長最快的企業之列。再過20年，通過幾次業務收購，2017年，IQD被德國電子巨頭伍爾特集團(Wurth Group)的子公司伍爾特電子(Wurth Elektronik eiSos)收購。
今天，IQD繼續享有顯著的增長，成為一個重要的全球變頻控制產品供應商，涵蓋國防項目，消費電子產品，醫療可穿戴設備，運輸導航，5G網絡技術和物聯網應用等廣泛的行業和應用。

IQD原廠編碼	型號	頻率	頻率容差	頻率穩定度	工作溫度范圍
LFXTAL081314Reel	IQXC-240	37.4MHz	±7ppm	±15ppm	-30°C to 85°C
LFXTAL081316Reel	IQXC-240	38.4MHz	±7ppm	±15ppm	-30°C to 85°C
LFXTAL072539Reel	IQXC-26	24.0MHz	±15ppm	±15ppm	-20°C to 70°C
LFXTAL078691Cutt	IQXC-26	24.0MHz	±10ppm	±30ppm	-40°C to 85°C
LFXTAL081608Cutt	IQXC-26	24.0MHz	±10ppm	±20ppm	-40°C to 85°C
LFXTAL081608Reel	IQXC-26	24.0MHz	±10ppm	±20ppm	-40°C to 85°C
LFXTAL081609Cutt	IQXC-26	25.0MHz	±10ppm	±20ppm	-40°C to 85°C
LFXTAL083890Cutt	IQXC-26	25.0MHz	±10ppm	±20ppm	-40°C to 85°C
LFXTAL052799Cutt	IQXC-26	26.0MHz	±10ppm	±30ppm	-40°C to 85°C
LFXTAL066742Cutt	IQXC-26	26.0MHz	±15ppm	±15ppm	-20°C to 70°C
LFXTAL066742Reel	IQXC-26	26.0MHz	±15ppm	±15ppm	-20°C to 70°C
LFXTAL069296Cutt	IQXC-26	26.0MHz	±15ppm	±20ppm	-20°C to 70°C
LFXTAL070729Cutt	IQXC-26	26.0MHz	±10ppm	±15ppm	-20°C to 70°C
LFXTAL081614Cutt	IQXC-26	26.0MHz	±10ppm	±20ppm	-40°C to 85°C
LFXTAL081614Reel	IQXC-26	26.0MHz	±10ppm	±20ppm	-40°C to 85°C
LFXTAL072541Cutt	IQXC-26	27.0MHz	±15ppm	±15ppm	-20°C to 70°C
LFXTAL072541Reel	IQXC-26	27.0MHz	±15ppm	±15ppm	-20°C to 70°C
LFXTAL081610Cutt	IQXC-26	27.0MHz	±10ppm	±20ppm	-40°C to 85°C
LFXTAL072302Cutt	IQXC-26	30.0MHz	±15ppm	±15ppm	20°C to 70°C
LFXTAL081612Cutt	IQXC-26	30.0MHz	±10ppm	±20ppm	-40°C to 85°C
LFXTAL056523Cutt	IQXC-26	32.0MHz	±20ppm	±20ppm	-20°C to 70°C
LFXTAL056523Reel	IQXC-26	32.0MHz	±20ppm	±20ppm	-20°C to 70°C
LFXTAL069526Cutt	IQXC-26	32.0MHz	±15ppm	±15ppm	-20°C to 70°C
LFXTAL069526Reel	IQXC-26	32.0MHz	±15ppm	±15ppm	-20°C to 70°C
LFXTAL079322Cutt	IQXC-26	32.0MHz	±10ppm	±20ppm	-20°C to 70°C
LFXTAL079322Reel	IQXC-26	32.0MHz	±10ppm	±20ppm	-20°C to 70°C
LFXTAL081613Cutt	IQXC-26	32.0MHz	±10ppm	±20ppm	-40°C to 85°C
LFXTAL083149Reel	IQXC-26	32.0MHz	±10ppm	±20ppm	-40°C to 85°C
LFXTAL072304Cutt	IQXC-26	37.4MHz	±15ppm	±15ppm	20°C to 70°C
LFXTAL081616Cutt	IQXC-26	37.4MHz	±10ppm	±20ppm	-40°C to 85°C
LFXTAL063312Cutt	IQXC-26	40.0MHz	±30ppm	±30ppm	-40°C to 85°C
LFXTAL069527Cutt	IQXC-26	40.0MHz	±15ppm	±15ppm	-20°C to 70°C
LFXTAL069527Reel	IQXC-26	40.0MHz	±15ppm	±15ppm	-20°C to 70°C
LFXTAL081619Cutt	IQXC-26	40.0MHz	±10ppm	±20ppm	-40°C to 85°C
LFXTAL069528Cutt	IQXC-26	48.0MHz	±15ppm	±15ppm	-20°C to 70°C
LFXTAL069528Reel	IQXC-26	48.0MHz	±15ppm	±15ppm	-20°C to 70°C
LFXTAL081620Cutt	IQXC-26	48.0MHz	±10ppm	±20ppm	-40°C to 85°C
LFXTAL078795Cutt	IQXC-42	16.0MHz	±15ppm	±50ppm	-40°C to 85°C
LFXTAL081780RL3K	IQXC-42	16.0MHz	±10ppm	±20ppm	-30°C to 85°C
LFXTAL081781RL3K	IQXC-42	16.0MHz	±10ppm	±20ppm	-40°C to 85°C
LFXTAL081821Cutt	IQXC-42	16.0MHz	±10ppm	±15ppm	-30°C to 85°C
LFXTAL082887RL3K	IQXC-42	16.0MHz	±10ppm	±30ppm	-40°C to 105°C
LFXTAL059585Cutt	IQXC-42	20.0MHz	±15ppm	±20ppm	-40°C to 85°C
LFXTAL059585Reel	IQXC-42	20.0MHz	±15ppm	±20ppm	-40°C to 85°C
LFXTAL059585RL3K	IQXC-42	20.0MHz	±15ppm	±20ppm	-40°C to 85°C
LFXTAL064174RL3K	IQXC-42	24.0MHz	±30ppm	±30ppm	-40°C to 85°C
LFXTAL066139Cutt	IQXC-42	24.0MHz	±20ppm	±20ppm	-40°C to 85°C
LFXTAL069476RL3K	IQXC-42	24.0MHz	±10ppm	±10ppm	-20°C to 75°C
LFXTAL069493Cutt	IQXC-42	24.0MHz	±15ppm	±20ppm	-40°C to 85°C
LFXTAL069493Reel	IQXC-42	24.0MHz	±15ppm	±20ppm	-40°C to 85°C
LFXTAL069493RL3K	IQXC-42	24.0MHz	±15ppm	±20ppm	-40°C to 85°C
LFXTAL072577RL3K	IQXC-42	24.0MHz	±10ppm	±20ppm	-40°C to 85°C
LFXTAL076411Cutt	IQXC-42	24.0MHz	±10ppm	±10ppm	-20°C to 70°C
LFXTAL076411RL3K	IQXC-42	24.0MHz	±10ppm	±10ppm	-20°C to 70°C
LFXTAL081531RL3K	IQXC-42	24.0MHz	±10ppm	±20ppm	-40°C to 85°C
LFXTAL081646RL3K	IQXC-42	24.0MHz	±15ppm	±20ppm	-40°C to 85°C
LFXTAL082123Cutt	IQXC-42	24.0MHz	±10ppm	±15ppm	-40°C to 85°C
LFXTAL082123RL3K	IQXC-42	24.0MHz	±10ppm	±15ppm	-40°C to 85°C
LFXTAL090516RL3K	IQXC-42	24.0MHz	±50ppm	±50ppm	-40°C to 85°C
LFXTAL054026Cutt	IQXC-42	25.0MHz	±25ppm	±30ppm	-40°C to 85°C
LFXTAL059552Reel	IQXC-42	25.0MHz	±20ppm	±30ppm	-40°C to 85°C
LFXTAL064933Cutt	IQXC-42	25.0MHz	±30ppm	±30ppm	0°C to 50°C
LFXTAL066140Cutt	IQXC-42	25.0MHz	±20ppm	±20ppm	-40°C to 85°C
LFXTAL069494Bulk	IQXC-42	25.0MHz	±15ppm	±20ppm	-40°C to 85°C
LFXTAL069494Cutt	IQXC-42	25.0MHz	±15ppm	±20ppm	-40°C to 85°C
LFXTAL069494Reel	IQXC-42	25.0MHz	±15ppm	±20ppm	-40°C to 85°C
LFXTAL069494RL3K	IQXC-42	25.0MHz	±15ppm	±20ppm	-40°C to 85°C
LFXTAL075431RL3K	IQXC-42	25.0MHz	±30ppm	±40ppm	-30°C to 85°C
LFXTAL082125Cutt	IQXC-42	25.0MHz	±10ppm	±15ppm	-40°C to 85°C
LFXTAL082125RL3K	IQXC-42	25.0MHz	±10ppm	±15ppm	-40°C to 85°C
LFXTAL085846RL3K	IQXC-42	25.0MHz	±25ppm	±50ppm	-40°C to 125°C
LFXTAL090436RL3K	IQXC-42	25.0MHz	±10ppm	±20ppm	-40°C to 105°C
LFXTAL059591Cutt	IQXC-42	26.0MHz	±15ppm	±20ppm	-40°C to 85°C
LFXTAL059591Reel	IQXC-42	26.0MHz	±15ppm	±20ppm	-40°C to 85°C
LFXTAL059591RL3K	IQXC-42	26.0MHz	±15ppm	±20ppm	-40°C to 85°C
LFXTAL066141Cutt	IQXC-42	26.0MHz	±15ppm	±15ppm	-20°C to 70°C
LFXTAL076879Bulk	IQXC-42	26.0MHz	±30ppm	±30ppm	-40°C to 85°C