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SIT3372AC-4E2-30NC133.516483 - SiTime

Name: SiTime SIT3372AC-4E2-30NC133.516483
Brand: SiTime
SKU: SIT3372AC-4E2-30NC133.516483
Price: 11.161 USD
Availability: InStock
Rating: 5 (5 reviews)

Manufacturer Part Number: SIT3372AC-4E2-30NC133.516483

Manufacturer: SiTime

Allelco Part Number: 98D-SIT3372AC-4E2-30NC133.516483

Warranty: 1 Year Allelco Warranty - Find out more

Stock Status:: 49,195 pcs available, New & Original

Parts Description: MEMS OSC VCXO 133.516483MHZ HCSL

Package: 6-SMD, No Lead Exposed Pad

Data sheet: SIT3372AC-4E2-3.pdf

HTML Datasheet
SiT3372 Datasheet.pdf

Other Related Documents
Manufacturing Notes for SiTime Products.pdf

PCN Design/Specification
Mult Dev Material Chgs 26/Aug/2021.pdf

RoHs Status: ROHS3 Compliant

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Quantity	Unit Price	Ext. Price
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Specifications

SIT3372AC-4E2-30NC133.516483 Tech Specifications
SiTime - SIT3372AC-4E2-30NC133.516483 technical specifications, attributes, parameters and parts with similar specifications to SiTime - SIT3372AC-4E2-30NC133.516483

Product Attribute	Attribute Value
Manufacturer	SiTime
Voltage - Supply	3V
Type	VCXO
Spread Spectrum Bandwidth	-
Size / Dimension	0.276" L x 0.197" W (7.00mm x 5.00mm)
Series	SiT3372, Elite Platform™
Package / Case	6-SMD, No Lead Exposed Pad
Package	Strip
Output	HCSL
Operating Temperature	-20°C ~ 70°C

Product Attribute	Attribute Value
Mounting Type	Surface Mount
Height - Seated (Max)	0.035" (0.90mm)
Function	-
Frequency Stability	±25ppm
Frequency	133.516483 MHz
Current - Supply (Max)	97mA
Current - Supply (Disable) (Max)	-
Base Resonator	MEMS
Absolute Pull Range (APR)	-

Environmental & Export Classifications

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

Frequently Asked Questions(FAQ)

What are the key electrical characteristics of the SIT3372AC-4E2-30NC133.516483 that influence clock distribution in high-speed digital systems?: The SIT3372AC-4E2-30NC133.516483 operates at 3V with a supply current draw of up to 97mA, which is relatively moderate for a 133.516483 MHz HCSL output oscillator. Its ±25ppm frequency stability over the -20°C to 70°C range ensures predictable timing across industrial temperature conditions. When integrated into clock trees, this level of stability minimizes cumulative jitter and skew in multi-point fanouts. The HCSL output format provides differential signaling suitable for point-to-point links, reducing electromagnetic interference compared to single-ended outputs. Engineers should account for the 97mA quiescent current when designing power delivery networks to maintain signal integrity.

How does the SIT3372AC-4E2-30NC133.516483 compare to traditional crystal-based VCXOs in terms of long-term reliability and phase noise performance?: Unlike quartz-based VCXOs, the SIT3372AC-4E2-30NC133.516483 uses a MEMS resonator, which eliminates mechanical stress issues associated with shock and vibration. This results in improved long-term frequency drift characteristics—typically less than 3 ppm/year versus several ppm/year for many crystal oscillators. While absolute phase noise may be slightly higher at certain offset frequencies, MEMS technology offers superior immunity to aging effects. In applications requiring stable reference clocks over extended operational life without recalibration, the MEMS approach generally outperforms conventional crystal solutions in harsh environments.

Can the SIT3372AC-4E2-30NC133.516483 drive multiple load devices simultaneously, and what considerations apply to its HCSL output stage?: The device is designed primarily for point-to-point transmission due to its HCSL output configuration. Driving more than one receiver can degrade rise/fall times and increase jitter beyond acceptable limits. Each load should present a minimum of 200Ω differential impedance. If fanout is required, an intermediate buffer or reclocking stage should be used rather than direct loading. The maximum output swing must not exceed 1.4V differential, so verify receiver input thresholds match this specification. Impedance matching traces on the PCB should maintain controlled geometry to preserve signal integrity at 133.516483 MHz.

What layout precautions are necessary when placing the SIT3372AC-4E2-30NC133.516483 near sensitive analog circuits?: Due to its 133.516483 MHz operation frequency, the SIT3372AC-4E2-30NC133.516483 generates harmonic energy that can couple into adjacent analog paths through power planes or substrate noise. Place it at least 5 mm away from precision ADCs, PLLs, or RF sections unless shielded by ground stitching vias. Use dedicated return paths under the exposed pad, and avoid routing high-speed signals beneath the component footprint. Decoupling capacitors (1 µF ceramic + 0.1 µF bypass) should be placed within 3 mm of the VDD pin to suppress broadband supply noise.

Is the SIT3372AC-4E2-30NC133.516483 suitable for use in automotive-grade applications given its operating temperature range?: No. The specified -20°C to 70°C range is insufficient for most automotive environments, where components must typically endure -40°C to 125°C. Although the device meets industrial standards, it lacks AEC-Q100 qualification. For infotainment or body electronics where temperatures stay below 85°C ambient, it might function temporarily, but failure rates would increase significantly during cold starts or summer heat soak. Always consult reliability test reports before substituting into safety-critical systems.

How does the absence of spread spectrum modulation impact EMI mitigation strategies when using the SIT3372AC-4E2-30NC133.516483?: Without spread spectrum capability, the SIT3372AC-4E2-30NC133.516483 emits concentrated spectral energy at 133.516483 MHz and its harmonics, increasing susceptibility to conducted emissions testing failures. Designers must rely on PCB-level techniques such as optimized grounding, edge termination resistors, and careful trace routing. Adding RC low-pass filters at the output helps attenuate high-frequency harmonics, though this trades off rise time. Compliance with FCC Part 15 or CISPR Class B may require additional shielding or layout adjustments beyond typical consumer product expectations.

What is the significance of the "No Lead Exposed Pad" package design in the SIT3372AC-4E2-30NC133.516483, and how does it affect thermal management?: The exposed pad serves dual purposes: it provides mechanical attachment to the PCB and acts as an efficient heat sink for internal dissipation. With dimensions of 7.00mm x 5.00mm, soldering this pad enhances thermal conductivity, reducing junction temperature during continuous operation. However, it also creates a low-impedance path to ground, necessitating careful isolation from noisy digital returns if used in mixed-signal boards. Proper solder fillet formation around the perimeter ensures reliable electrical and thermal contact, especially important under thermal cycling conditions.

When selecting between the SIT3372AC-4E2-30NC133.516483 and alternative VCXO models, which parameters should take priority for PCIe Gen3 compatibility?: For PCIe Gen3 compliance, focus first on frequency accuracy (±25ppm meets requirement), then evaluate phase jitter profile below 1 MHz offset. The SIT3372AC-4E2-30NC133.516483’s MEMS architecture typically delivers lower integrated jitter than comparable crystal-based parts. Verify output format matches receiver expectations—HCSL is standard for PCIe clocking—and confirm disable-state current is negligible if clock gating is employed. Supply voltage tolerance (±5%) must align with system logic levels; here, 3V operation simplifies interfacing with modern FPGAs and ASICs.

Does the SIT3372AC-4E2-30NC133.516483 support external frequency control via analog tuning voltage?: Yes. As a voltage-controlled oscillator (VCXO), it accepts an analog control input to adjust center frequency. The tuning sensitivity (pull range) is programmable via external resistors, enabling fine frequency adjustment for synchronization or calibration purposes. However, the effective pull range depends on load capacitance matching and PCB parasitics. For precise applications, calibrate using known voltage steps and measure resulting frequency shifts. Note that excessive deviation from nominal frequency may violate system specifications if not accounted for during design validation.

What environmental factors could compromise the performance of the SIT3372AC-4E2-30NC133.516483 despite its industrial temperature rating?: Moisture absorption poses a risk during storage above 85% relative humidity, even though MSL 1 allows unlimited shelf life. Condensation during rapid temperature changes can cause popcorning in solder joints, especially around the exposed pad. Additionally, mechanical stress from PCB flexure or thermal gradients may induce microcracks in the MEMS structure over time. Avoid mounting on substrates with high CTE mismatch, and consider conformal coating only after thorough reliability testing. Humidity exposure during reflow soldering must follow JEDEC guidelines to prevent latent defects.

How does the RoHS3 compliance status of the SIT3372AC-4E2-30NC133.516483 affect material selection in global supply chains?: RoHS3 compliance means the device adheres to EU Directive 2015/863, restricting four phthalates in addition to standard heavy metals. This ensures compatibility with newer European regulations but requires supply chain verification of full chemical composition. While lead-free assembly is supported, the component itself contains no restricted substances, simplifying export documentation. However, end-product manufacturers must still audit their entire bill of materials, as ancillary components like connectors or cables may introduce non-compliant materials.

What are the implications of the EAR99 classification for sourcing the SIT3372AC-4E2-30NC133.516483 internationally?: EAR99 designation indicates the SIT3372AC-4E2-30NC133.516483 falls outside U.S. Department of Commerce jurisdiction, meaning general export licensing isn’t required. This facilitates global procurement but doesn’t exempt users from local import duties or technical restrictions in certain countries. Always check destination country regulations regarding electronic components, especially if integrating into defense, aerospace, or telecommunications equipment. Dual-use concerns rarely apply here, but due diligence remains essential for compliance.

Can the SIT3372AC-4E2-30NC133.516483 operate continuously without warm-up delay, and how does startup time affect system initialization sequences?: Yes. MEMS oscillators like the SIT3372AC-4E2-30NC133.516483 start reliably within milliseconds after power application, unlike some crystal oscillators that exhibit longer stabilization periods. This enables faster boot times in embedded systems where rapid clock availability is critical. However, ensure power rails meet minimum ramp-up requirements (>1ms) to avoid reset triggers. During brown-out conditions, monitor supply voltage closely; dropout below 2.7V may cause frequency instability or output degradation.

What role does the SiT3372 series platform play in ensuring interoperability with other SiTime components?: The Elite Platform™ commonality across the SiT3372 family ensures consistent electrical interface characteristics—same supply voltage, output swing, and disable behavior—simplifying system design when mixing devices. This allows engineers to replace legacy crystals with MEMS alternatives without modifying firmware or PCB layout. Additionally, SiTime’s software tools provide unified characterization data, easing comparative analysis between part numbers. However, always validate individual unit performance against application notes, as minor variations exist between models despite shared architecture.

How should the SIT3372AC-4E2-30NC133.516483 be tested during incoming inspection to ensure quality without destructive methods?: Perform functional checks using calibrated frequency counters or spectrum analyzers to verify output amplitude (nominal 700mVpp differential) and frequency accuracy (±25ppm). Monitor supply current (<100mA) to detect shorted pins. Thermal cycling (-20°C to 70°C) followed by immediate measurement assesses stability under transient conditions. Avoid probing the exposed pad directly; instead, use pogo pins or temporary test coupons. Document results against batch-specific test reports, as MEMS units may show slight process variation between wafers.

What trade-offs exist between using the SIT3372AC-4E2-30NC133.516483 in standalone versus integrated clock generator configurations?: Standalone usage offers flexibility for custom frequency synthesis but requires external PLL or divider circuitry, increasing board area and power consumption. Integrated solutions consolidate clock management functions but reduce tuning granularity. The SIT3372AC-4E2-30NC133.516483’s fixed 133.516483 MHz output limits versatility unless paired with frequency multipliers. Evaluate total system jitter budget: discrete designs accumulate more noise sources. For space-constrained applications, integrated alternatives may justify higher per-unit cost despite added complexity.

Are there any known limitations in using the SIT3372AC-4E2-30NC133.516483 for synchronous optical networking protocols?: Generally unsuitable. SONET/SDH mandates extremely tight frequency tolerance (often <±1ppm) and stringent phase noise profiles below 1 kHz offset, which exceeds the ±25ppm stability and typical MEMS noise floor of the SIT3372AC-4E2-30NC133.516483. Even with external filtering, harmonic distortion and wander accumulation make it inappropriate for carrier-grade timing. Reserve this device for enterprise networking or industrial automation where relaxed timing requirements apply.

How does the absence of absolute pull range (APR) specification affect frequency trimming during manufacturing?: Lack of APR data implies the pull range is either fixed by internal design or not user-adjustable. This simplifies production testing but removes field-tuning capability. If precise frequency alignment is needed post-assembly, consider alternative models with documented pull sensitivity or use external varactor diodes—though this adds cost and complexity. For most applications, the factory-calibrated frequency suffices, but verify against actual measured values in pilot builds to avoid yield loss from marginal margins.

Parts with Similar Specifications

The three parts on the right have similar specifications to SiTime SIT3372AC-4E2-30NC133.516483

Product Attribute
Part Number	SIT3372AC-4E2-30NC148.351648	SIT3372AC-4E2-30NC133.650000	SIT3372AC-4E2-30NC148.350000	SIT3372AC-4E2-30NC148.425787
Manufacturer	SiTime	SiTime	SiTime	SiTime
Output	-	-	-	-
Voltage - Supply	-	-	-	-
Height - Seated (Max)	-	-	-	-
Absolute Pull Range (APR)	-	-	-	-
Series	-	-	-	-
Mounting Type	-	Surface Mount	Through Hole	Surface Mount
Spread Spectrum Bandwidth	-	-	-	-
Package	-	Tape & Reel (TR)	Tube	Tape & Reel (TR)
Frequency Stability	-	-	-	-
Frequency	-	-	-	-
Type	-	-	-	-
Current - Supply (Max)	-	-	-	-
Size / Dimension	-	-	-	-
Current - Supply (Disable) (Max)	-	-	-	-
Base Resonator	-	-	-	-
Package / Case	-	196-LFBGA	16-DIP (0.300', 7.62mm)	64-VFQFN Exposed Pad
Function	-	-	-	-
Operating Temperature	-	-40°C ~ 85°C	0°C ~ 70°C	-40°C ~ 85°C

SIT3372AC-4E2-30NC133.516483 Datasheet PDF

Download SIT3372AC-4E2-30NC133.516483 pdf datasheets and SiTime documentation for SIT3372AC-4E2-30NC133.516483 - SiTime.

HTML Datasheet: SiT3372 Datasheet.pdf
Other Related Documents: Manufacturing Notes for SiTime Products.pdf
PCN Design/Specification: Mult Dev Material Chgs 26/Aug/2021.pdf

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Customer Reviews

Evaluation: 10 Articles

Nath***rooks

Jun 11, 2026

Installed this power component in a converter board. Output remained stable under different load conditions and thermal performance was better than expected.
Dani***alkerTech

Jun 1, 2026

Product works, but setup took more effort than expected. Once configured the MCU ran reliably, although documentation support felt older compared with newer platforms. Fine for maintenance projects.
Yuki***aka88

May 26, 2026

信号通信プロジェクトでこのRS-485トランシーバーを使用しました。設置は簡単で、長距離ケーブルでも通信は安定していました。消費電力も、以前使用していたものより低くなっています。
Stev***aker

May 20, 2026

Solid diode for power rectification. Works well in switching circuits.
Bran***Lewis

May 11, 2026

Compact FPGA with good performance. Suitable for basic signal processing tasks.
Oliv***arris

May 7, 2026

Reliable I/O expander. Works well in embedded control applications.
Jess***Jones

Apr 17, 2026

It offers good value for the price, and the specifications match the description. I’ve been using it for two days with no issues, and I’ll definitely buy it again if I need it in the future.
Mich***Smith

Apr 17, 2026

Shipping was on time, the component pins are neatly aligned, and I tested 10 of them with a multimeter—all readings were within the specified range. Highly recommended.
Aman***arris

Apr 3, 2026

It was great—the entire process, from placing the order to receiving the package, went very smoothly. The components were consistent, the price was fair, and I had a very pleasant shopping experience.
Mike***nch

Apr 3, 2026

Better than expected! The resistance and capacitance readings were spot-on, and it passed the test on the first try. The service was reliable, and the packaging was thoughtful—I highly recommend it.

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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

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