Dimension scores are derived from public data and fields; weighted into the composite. Reference only.
SJK (Shenzhen Crystal Technology Industrial Co., Ltd.) is an electronic components manufacturer based in Shenzhen, China. Its website positions the company as a specialist in quartz crystals and crystal oscillators. According to the site, the company was founded in 1989 and focuses on quartz crystals, crystal oscillators, crystal filters, TCXO, VCXO, OCXO, ceramic resonators, ceramic filters, and SAW devices, serving applications such as communications, consumer electronics, industrial control, automotive electronics, GPS, Bluetooth, and IoT.
The website mainly functions as a product catalog and corporate showcase. Its product categories are fairly detailed, covering MHz/KHz quartz crystals, SMD oscillators, differential-output oscillators, temperature-compensated crystal oscillators, voltage-controlled crystal oscillators, oven-controlled crystal oscillators, ceramic filters, and more. Some pages list frequency ranges, package sizes, output types, and typical applications. On the service side, SJK offers pre-sales technical consultation, part selection guidance, free sample testing, OEM customization, and a 1-year warranty.
The website does not publish prices, MOQ, or online inventory. Its business model is closer to a traditional B2B quotation process: customers contact sales for pricing based on model, frequency, package, accuracy, temperature range, and other parameters. The site explicitly states that samples can be provided free of charge, but shipping costs are borne by the customer. Lead time for quartz crystals is usually around 3–4 weeks, depending on the specific model.
The main strengths are its broad product line, covering common frequency-control components and making it useful for hardware engineers doing initial part selection. The company also claims RoHS, ISO9001, and ISO14001 compliance, along with cleanroom facilities and production/testing equipment. The drawbacks are also clear: the website feels old-fashioned, with no online parametric filtering, datasheet download portal, inventory lookup, or online ordering. Key purchasing information such as pricing, minimum order quantity, reliability test reports, and certification numbers is not sufficiently disclosed and needs to be confirmed with sales.
SJK is suitable for electronics manufacturers, communications equipment vendors, IoT and wearable device teams, automotive electronics teams, and industrial control hardware teams looking for domestic Chinese suppliers of crystals, oscillators, and related filters. For individual developers or small-volume buyers, it may be more practical to first look for in-stock parts through electronic component distribution platforms.
This is the official website of a Shenzhen-based Chinese company, so it is expected to be directly accessible from mainland China. The site is primarily in English and also provides Portuguese and Russian language entry points, suggesting that its target customers include overseas buyers. However, no Chinese-language version was found, so it may not be especially convenient for domestic engineers to read.
⚠ This review is compiled from public sources and does not constitute a purchase recommendation. Verify all facts on the vendor's official site. Verify on sjk-crystal.com official site.
sjk-crystal.com is an China Hardware & IoT provider. TG4G tracks its product information, an overall rating of 5.0/10, and a China-accessibility score of China direct-connect friendly. Click "Visit Official Site" to reach sjk-crystal.com directly.