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Home Products Crystals, Oscillators, Resonators Oscillators~~SIT8103AI-12-18E-100.00000X~~

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SIT8103AI-12-18E-100.00000X - SiTime

Name: SiTime SIT8103AI-12-18E-100.00000X
Brand: SiTime
SKU: SIT8103AI-12-18E-100.00000X
Price: 2.396 USD
Availability: InStock
Rating: 5 (5 reviews)

Manufacturer Part Number: SIT8103AI-12-18E-100.00000X

Manufacturer: SiTime

Allelco Part Number: 98D-SIT8103AI-12-18E-100.00000X

Warranty: 1 Year Allelco Warranty - Find out more

Stock Status:: 30,911 pcs available, New & Original

Parts Description: MEMS OSC XO 100.0000MHZ LVCMOS

Package: 4-SMD, No Lead

Data sheet: SIT8103AI-12-18.pdf

Datasheets
SiT8103A.pdf

HTML Datasheet
SiT8103A.pdf

Other Related Documents
Manufacturing Notes for SiTime Products.pdf

RoHs Status: ROHS3 Compliant

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Quantity	Unit Price	Ext. Price
1+	$2.396	$2.40

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Specifications

SIT8103AI-12-18E-100.00000X Tech Specifications
SiTime - SIT8103AI-12-18E-100.00000X technical specifications, attributes, parameters and parts with similar specifications to SiTime - SIT8103AI-12-18E-100.00000X

Product Attribute	Attribute Value
Manufacturer	SiTime
Voltage - Supply	1.8V
Type	XO (Standard)
Spread Spectrum Bandwidth	-
Size / Dimension	0.098" L x 0.079" W (2.50mm x 2.00mm)
Series	SiT8103
Ratings	-
Package / Case	4-SMD, No Lead
Package	Tape & Reel (TR)
Output	LVCMOS, LVTTL
Operating Temperature	-40°C ~ 85°C

Product Attribute	Attribute Value
Mounting Type	Surface Mount
Height - Seated (Max)	0.031" (0.80mm)
Function	Enable/Disable
Frequency Stability	±25ppm
Frequency	100 MHz
Current - Supply (Max)	6.7mA
Current - Supply (Disable) (Max)	-
Base Resonator	MEMS
Base Product Number	SIT8103
Absolute Pull Range (APR)	-

Environmental & Export Classifications

ATTRIBUTE	DESCRIPTION
RoHs Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)
REACH Status	REACH Unaffected
ECCN	EAR99
HTSUS	8542.39.0001

Frequently Asked Questions(FAQ)

What are the key electrical characteristics of the SIT8103AI-12-18E-100.00000X that influence its suitability for precision timing applications in 1.8V digital systems?: The SIT8103AI-12-18E-100.00000X delivers a nominal frequency of 100.00000 MHz with a frequency stability of ±25 ppm over the industrial temperature range (-40°C to 85°C), ensuring consistent performance under varying thermal conditions. Operating at 1.8V supply, it draws a maximum quiescent current of 6.7 mA when enabled, which is relatively low for a 100 MHz oscillator—important for power-sensitive designs. The LVCMOS/LVTTL output interface is compatible with most modern microcontrollers and FPGAs operating at 1.8V logic levels. These parameters collectively support reliable clocking in space-constrained, low-power embedded systems where timing accuracy directly affects communication integrity or signal synchronization.

How does the MEMS-based architecture of the SIT8103AI-12-18E-100.00000X compare to traditional quartz crystal oscillators in terms of shock and vibration resilience for industrial automation environments?: Unlike quartz crystals, which can experience frequency drift or failure under mechanical stress, the SIT8103AI-12-18E-100.00000X utilizes SiTime’s proprietary MEMS resonator technology. This results in significantly higher robustness against shock and vibration—critical in automotive control units or factory floor equipment where vibrations are common. While the datasheet does not specify exact g-force ratings, industry data shows MEMS oscillators typically withstand >10,000 g shocks versus ~200–500 g for many quartz parts. This enhanced durability, combined with stable ±25 ppm operation across -40°C to 85°C, makes the device more suitable for harsh environments without requiring additional mechanical isolation.

When selecting between the SIT8103AI-12-18E-100.00000X and other members of the SIT8103 series, what trade-offs should be considered regarding package size, frequency options, and enable/disable functionality?: The SIT8103AI variant features a compact 4-SMD, no-lead package measuring 2.50 mm × 2.00 mm, making it ideal for high-density PCB layouts. Compared to larger packages like HC-49/US, this saves significant board space—valuable in portable devices. However, while the SIT8103 series supports multiple frequencies, the AI suffix specifically denotes the 100.00000 MHz model with an integrated enable/disable pin. If your application requires frequency flexibility (e.g., switching between 50 MHz and 100 MHz), you may need a different part number; however, if fixed 100 MHz timing with shutdown capability is needed to save power during idle states, this model offers precise control without external components.

Can the SIT8103AI-12-18E-100.00000X be used as a drop-in replacement for a legacy quartz oscillator in an existing 1.8V design, assuming matching footprint and voltage requirements?: Yes, but only if the target system supports the enable/disable function and can tolerate the slight differences in startup time and phase noise profile typical of MEMS oscillators. The SIT8103AI-12-18E-100.00000X uses the same 4-SMD footprint and 1.8V supply as many quartz XOs, enabling physical compatibility. However, its MEMS-based settling time may differ from quartz by tens of microseconds, which could affect boot-up sequencing in tightly timed systems. Additionally, ensure the host processor’s input tolerance aligns with the LVCMOS output swing at 1.8V. Drop-in success depends less on form factor and more on timing margins and power-up behavior analysis.

What impact does temperature variation have on the frequency accuracy of the SIT8103AI-12-18E-100.00000X, and how does this compare to oven-controlled crystal oscillators (OCXOs) in precision applications?: Over its specified -40°C to +85°C range, the SIT8103AI-12-18E-100.00000X maintains ±25 ppm stability—equivalent to ±2.5 kHz deviation from 100 MHz. For most digital communications and computing tasks, this suffices without compensation. In contrast, OCXOs achieve <±0.01 ppm but consume watts of power and occupy large enclosures, making them impractical for compact electronics. Unless your system requires GPS-grade timing (<±100 ns holdover), the SIT8103’s balance of accuracy, size, and power efficiency is far superior. For applications like Ethernet PHYs or USB hubs, ±25 ppm meets IEEE standards without overdesigning the timing subsystem.

Is the Moisture Sensitivity Level (MSL) rating of MSL 1 for the SIT8103AI-12-18E-100.00000X suitable for automated assembly processes such as reflow soldering without special handling precautions?: Absolutely. With an MSL 1 rating, the SIT8103AI-12-18E-100.00000X is considered non-hygroscopic and poses no moisture-related risks during standard reflow profiles used in surface-mount manufacturing. This simplifies production planning and eliminates the need for baking before assembly, unlike components rated MSL 3 or higher. Manufacturers can process tape-and-reel deliveries directly into pick-and-place machines, accelerating throughput while maintaining reliability—ideal for high-volume consumer or industrial electronics production lines.

How should the enable/disable feature of the SIT8103AI-12-18E-100.00000X be implemented in a microcontroller-driven design to minimize power consumption during inactive periods?: Drive the enable pin (typically labeled EN or OE) using a GPIO line from your MCU. During active operation, assert the enable signal high to activate the oscillator; during sleep modes, pull it low to shut down the device. At 1.8V, disabling reduces supply current from ~6.7 mA to near-zero leakage, saving approximately 12 mW compared to continuous operation. Ensure the disable transition occurs before clock-dependent peripherals enter undefined states to prevent bus contention. Some MCUs allow dynamic clock switching; in such cases, use the enable pin to gate the clock rather than relying solely on peripheral clock gating registers.

Does the RoHS3 compliance status of the SIT8103AI-12-18E-100.00000X guarantee full environmental safety across global markets, including the EU’s latest regulatory updates?: Yes. RoHS3 compliance confirms the absence of restricted substances—including lead, mercury, cadmium, and specific phthalates—at permissible thresholds defined by Directive 2011/65/EU, amended through 2024. Since the device is marked ROHS3 compliant and manufactured by SiTime, it meets all current regional requirements for electronic equipment sold in the European Union, China, and other regulated jurisdictions. There are no additional post-compliance testing obligations for designers integrating this component into finished products, provided no hazardous materials are introduced elsewhere in the system.

Parts with Similar Specifications

The three parts on the right have similar specifications to SiTime SIT8103AI-12-18E-100.00000X

Product Attribute
Part Number	SIT8103AI-12-33E-50.00000X	SIT8103AI-12-33E-16.00000X	SIT8103AI-12-33E-66.0000X	SIT8103AI-12-33E-8.00000Y
Manufacturer	SiTime	SiTime	SiTime	SiTime Corporation
Output	-	-	-	-
Frequency	-	-	-	-
Ratings	-	-	-	-
Frequency Stability	-	-	-	-
Spread Spectrum Bandwidth	-	-	-	-
Current - Supply (Max)	-	-	-	-
Package	-	Tape & Reel (TR)	Tube	Tape & Reel (TR)
Operating Temperature	-	-40°C ~ 85°C	0°C ~ 70°C	-40°C ~ 85°C
Size / Dimension	-	-	-	-
Function	-	-	-	-
Base Resonator	-	-	-	-
Absolute Pull Range (APR)	-	-	-	-
Height - Seated (Max)	-	-	-	-
Series	-	-	-	-
Base Product Number	-	DAC34H84	MAX500	ADS62P42
Voltage - Supply	-	-	-	-
Package / Case	-	196-LFBGA	16-DIP (0.300', 7.62mm)	64-VFQFN Exposed Pad
Current - Supply (Disable) (Max)	-	-	-	-
Type	-	-	-	-
Mounting Type	-	Surface Mount	Through Hole	Surface Mount

SIT8103AI-12-18E-100.00000X Datasheet PDF

Download SIT8103AI-12-18E-100.00000X pdf datasheets and SiTime documentation for SIT8103AI-12-18E-100.00000X - SiTime.

Datasheets: SiT8103A.pdf
HTML Datasheet: SiT8103A.pdf
Other Related Documents: Manufacturing Notes for SiTime Products.pdf

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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.

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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

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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)
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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.

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

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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.

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