stockrowWhat it does
SiTime designs precision timing products for electronic systems. Timing components provide clock signals that help processors, communications chips and other components operate together accurately. Its customers use these products in AI data centers, communications networks, vehicles, industrial equipment, aerospace and defense systems, mobile devices and consumer electronics.
The company’s products include oscillators, clock integrated circuits, resonators and synchronization software. A resonator vibrates at a precise frequency; an oscillator combines a resonator with circuitry to generate a clock signal. Clock chips can distribute multiple signals, while synchronization software helps coordinate time across a network.
SiTime makes its resonators from silicon using micro-electro-mechanical systems, or MEMS, technology. It designs the resonators, circuits and software that go into its timing systems, but outsources manufacturing. Its products can be programmed to customer specifications after batch production. SiTime says this supports custom requirements and shorter lead times.
The company sells primarily through distributors, although it also sells directly to some customers and operates an online store. Its principal executive offices are in Santa Clara, California. Rajesh Vashist is chairman, president and chief executive officer.
In July 2026, SiTime closed its acquisition of the Renesas timing business, adding clock products including the FemtoClock and VersaClock families. SiTime calls the acquired operation its Timing Products Division.
How it makes money
SiTime earns revenue mainly by selling timing products to distributors, which then sell them to electronics manufacturers. It also sells directly to some end customers. Historically, oscillator systems have generated substantially all of its revenue across its target markets. Software is embedded in products rather than sold separately.
Reportable segment revenue was $326.7 million in FY2025, and company revenue was $157.4 million in Q2 2026.
SiTime has one reportable segment. Its products serve applications with different performance, size and power requirements, from data-center networking equipment to battery-powered devices. The company designs combinations of resonators, oscillator circuits and clock chips for these uses. Its programmable architecture lets it configure products for customers after manufacturing them in batches.
Prices vary considerably by product, and the price of an individual product generally decreases as it matures. SiTime says its average selling prices have historically remained relatively flat as it introduces higher-end products. Pricing and margins depend on customer demand, volumes and product features. In 2025, a shift in the mix of products shipped increased average selling prices, while unit shipment volume increased by 14%.
Customer design cycles typically run from six months to three years before volume shipments, and product life cycles can last up to ten years or more. That can lead to sales over a product’s life, but SiTime sells under purchase orders that customers can cancel, reduce or reschedule with little or no notice. Revenue is generally recognized when products ship and control transfers to the customer.
| Segment | Revenue, FY2025 | Share | Change on the year |
|---|---|---|---|
| Reportable Segment | $326.7 million | 100.0% | 61.2% |
Customers and how it sells
SiTime serves electronics manufacturers across communications and data centers, automotive and industrial equipment, aerospace and defense, and mobile and consumer devices. Sales personnel work with large end customers on their timing requirements, while distributors execute many of the resulting sales. Smaller customers can work with sales staff or distributors, or order through SiTimeDirect.
Two distributors accounted for substantial portions of SiTime’s FY2025 revenue: Arrow Electronics, Inc. accounted for 26.0% of revenue and Pernas Electronics Co. Ltd. accounted for 25.0% of revenue. SiTime identifies Apple as its largest end customer. Based on distributor sell-through information, it believes most products sold to Pernas and Quantek Technology are incorporated into Apple products. SiTime estimates that its largest end customer accounted for approximately 17% of revenue in 2025.
A large consumer customer generated $22.8 million in revenue in Q2 2026. SiTime expects a consumer design win to spread across that customer’s platform. Customer demand is also affected by product launch schedules: SiTime says revenue has typically been stronger in the second half of the year, although that pattern is not assured.
SiTime sells worldwide. International sales represented approximately 93% of net revenues in 2025, measured by the ship-to location of the customer purchasing the products rather than necessarily the location of the final end user.
| Segment | Revenue, FY2025 | Share | Change on the year |
|---|---|---|---|
| Reportable Segment | $326.7 million | 100.0% | 61.2% |
Suppliers and costs
SiTime uses a fabless model: it designs its products and contracts with foundries and other suppliers to fabricate, package, assemble and test them. Its primary foundries include Bosch in Germany, TSMC and United Microelectronics in Taiwan, and Teledyne in Canada. Assembly and test contractors operate in locations including Taiwan, Malaysia, Thailand, Japan and Singapore.
Bosch supplies MEMS wafers under an agreement running through February 2027 that automatically renews. Bosch can decide whether to accept purchase orders. SiTime expects no issues renewing the agreement. Apart from Bosch, SiTime generally purchases from manufacturing contractors using purchase orders rather than long-term supply agreements.
Cost of revenue includes foundry wafers, outsourced assembly, packaging and testing, acquired-intangible amortization, and manufacturing personnel and overhead. Gross margin also changes with selling prices, product mix, yields, inventory write-downs and material costs. Personnel costs are the largest component of operating expenses, which include research and development, sales, administration and acquisition-related costs.
For the acquired timing business, SiTime is relying on Renesas for production during the transition. The company has identified supply-chain constraints in that business and is working to improve them.
- Revenue$326.7M
- Cost of revenue−$151.7M
- Research and development−$118.9M
- Selling, general and administrative−$116.5M
- Other operating costs−$6.6M
- Operating income−$67.0M
Competitive position
SiTime competes in the timing market against suppliers ranging from large international semiconductor companies to specialists in narrower markets. Named competitors include Skyworks Solutions, Microchip Technology, Texas Instruments, Seiko Epson, Murata Manufacturing and Daishinku. SiTime also competes with suppliers using quartz resonators and oscillators, as well as companies selling clock chips.
SiTime says its silicon MEMS resonators can be integrated with its own circuits and packaged as complete timing systems. It contrasts this approach with quartz-based suppliers that typically outsource analog circuit design and packaging. Its oscillators can also be programmed to customer requirements after batch production. The company says it has significant share in optical-module applications, with a higher share in faster modules; it does not give a percentage.
Our reading: SiTime’s combination of resonator, circuit and packaging expertise provides a meaningful technical defense, particularly where customers need integrated timing systems, although larger competitors have broader resources. Our reading: Customer design cycles and long product lives can support continuing relationships after a design win, but they also make winning new business a lengthy process.
SiTime held 147 issued U.S. patents as of December 31, 2025, covering areas including MEMS processes, resonators, circuits and packaging. Our reading: Patents and proprietary processes add protection, but they do not eliminate the risk of competing technologies or intellectual-property disputes.
| Competitor | Where they compete | Threat (our reading) |
|---|---|---|
| Skyworks Solutions, Inc. | Timing products | Medium |
| Microchip Technology Inc. | Timing products | Medium |
| Texas Instruments Incorporated | Timing products | Medium |
| Seiko Epson Corporation | Timing products | Medium |
| Murata Manufacturing Co., Ltd | Timing products | Medium |
| Daishinku Corp. | Timing products | Medium |
| Diodes Incorporated | Timing products | Medium |
| Kyocera Corporation | Timing products | Medium |
Growth opportunities
SiTime’s 2025 revenue growth was driven primarily by demand for timing products in AI and data-center applications. In Q2 2026, communications, enterprise and data-center revenue was $101.2 million, up 181% year-over-year. SiTime says increasing network bandwidth, synchronization across data-center equipment and spending beyond traditional hyperscalers are contributing to demand.
The company expects the combined serviceable market for 1.6T and 800G optical modules to be $450.0 million in 2027. It also expects greater use of its synchronization products in data-center racks. Beyond data centers, SiTime is pursuing timing applications in autonomous vehicles, defense systems and consumer devices. It estimates a $400.0 million serviceable market for positional accuracy in autonomous driving.
SiTime is expanding its clock and resonator portfolio and developing ways to integrate timing into chiplets, advanced substrates and modules. The company estimates that integrated timing could expand its communications, enterprise and data-center serviceable market by $2.5 billion by 2030.
The July 2026 acquisition of the Renesas timing business added clock families and customers. SiTime previously guided to $300 million of revenue from that business in the 12 months after closing and now expects it could grow at a higher rate, while noting that integration is at an early stage. The company has also said many customers are placing orders 12 to 18 months in advance, improving its visibility into 2027.
- $218.8MFY2021
- $283.6MFY2022
- $144.0MFY2023
- $202.7MFY2024
- $326.7MFY2025
Structural risks
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Customer concentration and orders: A small number of distributors account for substantial revenue. Purchase orders can be canceled, reduced or rescheduled with little notice, leaving SiTime with excess inventory or costs, or unable to meet a sudden increase in demand.
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Manufacturing supply: SiTime depends on outside foundries and assembly and test contractors. Capacity shortages, disruptions or yield changes can constrain shipments and increase costs. Most manufacturing contractors do not have long-term supply agreements with the company.
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Acquisition integration: The acquired timing business depends on Renesas for manufacturing and testing during the transition. SiTime has identified supply-chain constraints and must transfer customer relationships, manage the supply transition and move the operation onto its platform.
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Semiconductor cycles and pricing: Demand, supply and prices fluctuate across the industry. SiTime says competitors could increase price pressure, reduce its gross margins or take market share. Its gross margin also varies with product mix, selling prices, manufacturing costs and yields.
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Technology and design wins: Customer selection cycles are lengthy and can require substantial development spending without a guarantee of selection. Failure to develop products in time or respond to technology shifts could cost SiTime design wins and revenue. Intellectual-property litigation or disclosure of trade secrets could also disrupt its business.
Bottom line
Our reading
Our reading: SiTime is a specialized semiconductor designer whose business rests on selling silicon timing components into customers’ product designs, with manufacturing handled by outside partners. Its expansion into clocks and the acquired timing business broadens the portfolio, while data-center demand has supported recent growth. The main exposures are concentrated sales channels, cyclical customer orders and supplier capacity, alongside the work of integrating a business that still relies on Renesas for production.