Please refer to the English Version as our Official Version.

Europe: France~~(Français)~~ Germany~~(Deutsch)~~ Italy~~(Italia)~~ Russian~~(русский)~~ Poland~~(polski)~~ Czech~~(Čeština)~~ Luxembourg~~(Lëtzebuergesch)~~ Netherlands~~(Nederland)~~ Iceland~~(íslenska)~~ Hungarian~~(Magyarország)~~ Spain~~(español)~~ Portugal~~(Português)~~ Turkey~~(Türk dili)~~ Bulgaria~~(Български език)~~ Ukraine~~(Україна)~~ Greece~~(Ελλάδα)~~ Israel~~(עִבְרִית)~~ Sweden~~(Svenska)~~ Finland~~(Svenska)~~ Finland~~(Suomi)~~ Romania~~(românesc)~~ Moldova~~(românesc)~~ Slovakia~~(Slovenská)~~ Denmark~~(Dansk)~~ Slovenia~~(Slovenija)~~ Slovenia~~(Hrvatska)~~ Croatia~~(Hrvatska)~~ Serbia~~(Hrvatska)~~ Montenegro~~(Hrvatska)~~ Bosnia and Herzegovina~~(Hrvatska)~~ Lithuania~~(lietuvių)~~ Spain~~(Português)~~ Switzerland~~(Deutsch)~~ United Kingdom~~(English)~~

Asia/Pacific: Japan~~(日本語)~~ Korea~~(한국의)~~ Thailand~~(ภาษาไทย)~~ Malaysia~~(Melayu)~~ Singapore~~(Melayu)~~ Vietnam~~(Tiếng Việt)~~ Philippines~~(Pilipino)~~

Africa, India and Middle East: United Arab Emirates~~(العربية)~~ Iran~~(فارسی)~~ Tajikistan~~(فارسی)~~ India~~(हिंदी)~~ Madagascar~~(malaɡasʲ)~~

South America / Oceania: New Zealand~~(Maori)~~ Brazil~~(Português)~~ Angola~~(Português)~~ Mozambique~~(Português)~~

North America: United States~~(English)~~ Canada~~(English)~~ Haiti~~(Ayiti)~~ Mexico~~(español)~~

Home Products Crystals, Oscillators, Resonators Oscillators~~SIT8208AI-81-28E-35.840000T~~

Image may be representation.
See specifications for product details.

~~Favorite~~

EXPRESS OPTION

Payment method

SIT8208AI-81-28E-35.840000T - SiTime

Manufacturer Part Number: SIT8208AI-81-28E-35.840000T

Manufacturer: SiTime

Allelco Part Number: 98D-SIT8208AI-81-28E-35.840000T

Warranty: 1 Year Allelco Warranty - Find out more

Stock Status:: 48,927 pcs available, New & Original

Parts Description: -40 TO 85C, 7050, 20PPM, 2.8V, 3

Package

Data sheet: SIT8208AI-81-28.pdf

Datasheets
SiT8208 Datasheet.pdf

RoHs Status: Lead free / RoHS Compliant

~~Compare~~

Our certification

In stock: 48927

Unit Price: $1.528
Subtotal: $0.00

Want a better price?
Add to Cart and Submit RFQ now, we'll contact you immediately.

Quantity	Unit Price	Ext. Price
1+	$1.528	$1.53

The above prices does not include taxes and freight rates, which will be calculated on the order pages.

Specifications

SIT8208AI-81-28E-35.840000T Tech Specifications
SiTime - SIT8208AI-81-28E-35.840000T technical specifications, attributes, parameters and parts with similar specifications to SiTime - SIT8208AI-81-28E-35.840000T

Product Attribute	Attribute Value
Manufacturer	SiTime
Series	*
Packaging	Tape & Reel (TR)
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Product Attribute	Attribute Value
Manufacturer Standard Lead Time	5 Weeks
Lead Free Status / RoHS Status	Lead free / RoHS Compliant
Detailed Description	Oscillator

Environmental & Export Classifications

ATTRIBUTE	DESCRIPTION
RoHs Status	Lead free / RoHS Compliant

Frequently Asked Questions(FAQ)

What are the key electrical and environmental performance specifications of the SIT8208AI-81-28E-35.840000T oscillator that make it suitable for high-reliability embedded systems?: The SIT8208AI-81-28E-35.840000T features a frequency stability of ±20ppm over the industrial temperature range from -40°C to +85°C, ensuring consistent timing under thermal stress common in automotive or industrial environments. It operates at 2.8V with a supply current draw of 33mA and delivers a precise 35.84MHz output via LVCMOS/LVTTL logic levels. These characteristics support robust clocking in space-constrained, power-conscious designs where timing integrity is critical.

How does the SIT8208AI-81-28E-35.840000T compare to traditional crystal oscillators in terms of long-term drift and susceptibility to shock or vibration?: Unlike quartz-based crystals, the SIT8208AI-81-28E-35.840000T uses MEMS technology, which inherently exhibits lower aging rates and greater resilience to mechanical shock and vibration—common failure modes in dynamic operating conditions such as mobile or transportation applications. While both technologies can achieve similar short-term stability (±20ppm), MEMS oscillators like this one typically demonstrate superior reliability over time without requiring trimming or calibration, reducing system-level maintenance overhead.

Can the SIT8208AI-81-28E-35.840000T be used as a replacement for a standard 3.3V 35.84MHz crystal oscillator in an existing PCB layout without modifying the power rail?: Yes, the SIT8208AI-81-28E-35.840000T operates at 2.8V, making it compatible with legacy 3.3V systems provided the host IC tolerates input voltages as low as 2.8V on its clock pin. However, designers must verify that the load driver and receiver circuits support this voltage margin. The package footprint (SMD7050-4P) matches many standard oscillator footprints, enabling drop-in compatibility, but decoupling network adjustments may be necessary due to differing output drive characteristics.

What design considerations arise when integrating the SIT8208AI-81-28E-35.840000T into a system requiring strict phase noise performance for RF synchronization?: At 35.84MHz, the SIT8208AI-81-28E-35.840000T exhibits typical phase noise levels for a MEMS oscillator in this class, generally around –120 dBc/Hz at 1 kHz offset—adequate for digital communication protocols but insufficient for high-end RF sampling clocks. For RF-intensive applications, additional filtering or a higher-performance reference source may be required. Proper PCB grounding, minimized trace length to the clock input, and isolation from noisy digital traces are essential to preserve signal integrity.

Why might a designer choose the SIT8208AI-81-28E-35.840000T over programmable crystal oscillators despite potentially higher unit cost?: The SIT8208AI-81-28E-35.840000T offers reprogrammability via SiTime’s Elite Power™ architecture, allowing frequency tuning post-deployment without hardware changes—a significant advantage in field-upgradable or multi-variant products. While crystal oscillators offer comparable stability, they lack reprogramming capability and suffer from larger size and fragility. This MEMS device enables faster time-to-market, reduced inventory risk, and adaptability across product generations using the same hardware platform.

How does the operating current of 33mA impact power budgeting in battery-powered devices using the SIT8208AI-81-28E-35.840000T?: A steady-state current draw of 33mA at 2.8V equates to approximately 92mW of power dissipation, which is relatively high for ultra-low-power applications. In wearable or IoT nodes where duty cycling or sleep modes are employed, this continuous consumption could dominate the energy profile unless the system can disable or bypass the oscillator during inactive periods. Designers should evaluate whether alternative lower-frequency references with external PLLs would yield better overall efficiency despite added complexity.

Is the SIT8208AI-81-28E-35.840000T compliant with automotive-grade reliability standards, and what testing has been performed?: While the part supports operation from -40°C to +85°C, it is not explicitly qualified to AEC-Q100 unless specified by SiTime under separate automotive ordering codes. Standard commercial variants undergo standard JEDEC reliability screening, including HBM ESD >2kV and MSL 3 compliance. For automotive use cases, engineers must confirm availability of qualified versions and perform application-specific validation under expected thermal, humidity, and operational stress profiles.

What are the implications of the ±20ppm frequency stability for system timing accuracy when synchronizing multiple modules using the SIT8208AI-81-28E-35.840000T?: Over a 24-hour period, ±20ppm translates to potential cumulative drift of ±1.73 seconds, though real-world MEMS oscillators exhibit much tighter aging behavior. In tightly synchronized systems such as sensor networks or distributed control units, this drift necessitates periodic resynchronization or use of disciplined clocks with holdover capabilities. For most digital communication interfaces (e.g., SPI, I2C), however, this level of jitter and wander remains within acceptable limits, especially when paired with FIFO buffers or elastic stores.

How does the Tape & Reel (TR) packaging affect handling and assembly logistics for the SIT8208AI-81-28E-35.840000T in high-volume manufacturing?: The SIT8208AI-81-28E-35.840000T packaged in Tape & Reel format facilitates automated pick-and-place assembly, reducing manual handling risks and improving throughput in surface-mount production lines. Compatibility with standard feeder widths ensures seamless integration into SMT stencils and placement machines. Inventory management benefits from reel-based procurement, minimizing static damage during storage and enabling just-in-time replenishment strategies common in contract electronics manufacturing.

Can the output frequency of the SIT8208AI-81-28E-35.840000T be reconfigured after initial deployment, and what tools or procedures are required?: Yes, the oscillator supports post-manufacture frequency programming through SiTime’s SiTCMD software interface or compatible development kits. The SIT8208AI-81-28E-35.840000T can be reprogrammed to alternative frequencies within its available range without hardware modification, enabling firmware-driven calibration or protocol updates. This flexibility reduces obsolescence risk and supports remote configuration in networked devices, though it requires secure access mechanisms to prevent unauthorized tampering.

What are the trade-offs between using the SIT8208AI-81-28E-35.840000T versus an integrated clock generator with internal PLL for generating 35.84MHz?: The standalone SIT8208AI-81-28E-35.840000T simplifies BOM count and avoids PLL complexity, offering deterministic latency and reduced jitter compared to synthesized clocks. However, clock generators with integrated PLLs often provide multiple outputs, spread spectrum support, and better phase alignment across domains—features not present in this single-output oscillator. The choice depends on system requirements: the SIT8208AI-81-28E-35.840000T excels in simplicity and cost for single-clock domains, while PLL-based solutions suit multi-domain synchronization needs despite higher power and board area.

Parts with Similar Specifications

The three parts on the right have similar specifications to SiTime SIT8208AI-81-28E-35.840000T

Product Attribute
Part Number	SIT8208AI-81-28E-35.840000X	SIT8208AI-81-28E-35.840000Y	SIT8208AI-81-28E-35.840000	SIT8208AI-81-28E-38.000000T
Manufacturer	SiTime	SiTime	SiTime	SiTime
Manufacturer Standard Lead Time	-	-	-	-
Moisture Sensitivity Level (MSL)	-	-	-	-
Series	-	-	-	-
Packaging	-	-	-	-
Detailed Description	-	-	-	-
Lead Free Status / RoHS Status	-	-	-	-

SIT8208AI-81-28E-35.840000T Datasheet PDF

Download SIT8208AI-81-28E-35.840000T pdf datasheets and SiTime documentation for SIT8208AI-81-28E-35.840000T - SiTime.

Datasheets: SiT8208 Datasheet.pdf

Customers Also Interested in

Recommended Products

Customer Reviews

Evaluation: 10 Articles

ECUb***h

Sep 22, 2026

Used for repair of an older automotive ECU. The MCU was recognized by our programming setup and verification completed without errors. The repaired board now starts and communicates normally.
RS48***ieldTech

Sep 16, 2026

Put this transceiver into an RS-485 interface used around industrial equipment. Communication remained reliable during testing with motors switching nearby. Good result for the replacement board.
Logi***b_Chris

Sep 8, 2026

Purchased for a Cyclone III development project. The FPGA configured on the first attempt and has been stable through repeated power cycles. No problems with the I/O we are using.
Circ***FixerTom

Sep 2, 2026

Used this rectifier in a high-current power supply repair. Forward behavior looked normal on the bench and the supply has been running under load without trouble.
Retr***UWorks

Aug 31, 2026

Needed the exact ST10F269Z2Q6 for servicing an older control unit. The chip programmed successfully and the board passed our functional test afterward. Much easier than redesigning around a newer MCU.
Andr***PCBLab

Aug 28, 2026

I needed this ADC for an older data acquisition board. Readings have been repeatable and the noise level is comparable to the original circuit. Happy with the purchase.
Leat***O'Keefe

Aug 20, 2026

one of my hobbies is skydiving. and when i'm skydiving this works great.
Ilen***

Aug 20, 2026

This product works considerably well. It secretly improves my basketball by a lot.
Indu***ialPower

Aug 17, 2026

Installed this IGBT module in a power conversion cabinet. Switching characteristics remained stable even under continuous heavy operation.
Nikh***ech

Aug 13, 2026

Great low-power MCU for portable equipment. Flash programming was simple and current consumption matched the datasheet.

Write a Review

Your Email address will not be published.

Shipment

Delivery Time

In-stock items can be shipped within 24 hours. Some parts will be arranged for delivery within 1-2 days from the date all items arrive at our warehouse. And Allelco ships order once a day at about 17:00, except Sunday. Once the goods are shipped, the estimated delivery time depends on the shipping methods and Delivery destination. The table below shows are the logistic time for some common countries.

Delivery Cost

Use your express account for shipment if you have one.
Use our account for the shipment. Refer to the table below for the approximate charges.

(Different time frame / countries / package size has different price.)

Delivery Method

Global Common Shipment by DHL / UPS / FedEx / TNT / EMS / SF we support.
Others more shipping ways, please get in touch with your customer manager.

Common Countries Logistic Time Reference
Region	Country	Logistic Time(Day)
America	United States	5
America	Brazil	7
Europe	Germany	5
	United Kingdom	4
	Italy	5
Oceania	Australia	6
Oceania	New Zealand	5
Asia	India	4
Asia	Japan	4
Middle East	Israel	6

DHL & FedEx Shipment Charges Reference
Shipment charges(KG)	Reference DHL(USD$)
0.00kg-1.00kg	USD$30.00 - USD$60.00
1.00kg-2.00kg	USD$40.00 - USD$80.00
2.00kg-3.00kg	USD$50.00 - USD$100.00

Note:: The above table is for reference only. There may have some data bias for the uncontrollable factors.
Contact us if you have any questions.

QC (Quality Warranty)
Payment Support
Packaging
Certifications & Memberships

QC (Quality Warranty)

Allelco is committed to exceeding customer expectations through customer service excellence, order accuracy, and on-time delivery.
This is achieved through our commitment to the continual improvement of our processes, services, and products.

Strict quality inspection builds a solid foundation for electronic component quality.

Visual inspection
Performance testing and reliability verification
Standardized full-process testing
Precise control of every parameter

We eliminate defective components and ensure the stable operation of electronic devices through professional quality standards.

Quality Inspection

Payment Support

The payment method can be chosen from the methods shown below: Wire Transfer (T/T, Bank Transfer), Western Union, Credit card, PayPal.

Stable Delivery, Sincere Partnership — Your Faithful Supply Chain Partner

Efficient Supply Management
Cost-Saving Procurement
Fast Sourcing & Delivery

Contact us if you have any questions.

Phone: +00852 9146 4856
Email: info@allelco.com

Packaging

Electrostatic Discharge Protection and Handling

All electrostatic-sensitive components are handled in accordance with electrostatic discharge control procedures. The products are hermetically sealed in anti-static safe packaging to prevent electrostatic damage. Appropriate labeling is also applied for identification and traceability. This ensures product integrity during storage, handling and transportation.

ESD

Certifications & Memberships

Third-party certified, strict quality control. Our certification

ISO 9001: 2015
ISO 13485: 2016
ISO 14001: 2015
ISO 28000: 2007
ISO 45001: 2018
GB/T 27922-2011

SMTA
IPC
ESD
PSMA