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Home Products Crystals, Oscillators, Resonators Oscillators~~SG-8018CE 155.0200M-TJHSA0~~

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SG-8018CE 155.0200M-TJHSA0 - EPSON

Manufacturer Part Number: SG-8018CE 155.0200M-TJHSA0

Manufacturer: Epson

Allelco Part Number: 98D-SG-8018CE 155.0200M-TJHSA0

Warranty: 1 Year Allelco Warranty - Find out more

Stock Status:: 35,727 pcs available, New & Original

Parts Description: XTAL OSC XO 155.0200MHZ CMOS SMD

Package: 4-SMD, No Lead

Data sheet: -

RoHs Status: ROHS3 Compliant

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Unit Price: $0.591
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Specifications

SG-8018CE 155.0200M-TJHSA0 Tech Specifications
EPSON - SG-8018CE 155.0200M-TJHSA0 technical specifications, attributes, parameters and parts with similar specifications to EPSON - SG-8018CE 155.0200M-TJHSA0

Product Attribute	Attribute Value
Manufacturer	Epson
Voltage - Supply	1.62V ~ 3.63V
Type	XO (Standard)
Spread Spectrum Bandwidth	-
Size / Dimension	0.126" L x 0.098" W (3.20mm x 2.50mm)
Series	SG-8018
Ratings	-
Package / Case	4-SMD, No Lead
Package	Tape & Reel (TR)
Output	CMOS

Product Attribute	Attribute Value
Operating Temperature	-40°C ~ 105°C
Mounting Type	Surface Mount
Height - Seated (Max)	0.047" (1.20mm)
Function	Standby (Power Down)
Frequency Stability	±50ppm
Frequency	155.02 MHz
Current - Supply (Max)	8.1mA
Current - Supply (Disable) (Max)	1.1µA
Base Resonator	Crystal
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)

How does the SG-8018CE 155.0200M-TJHSA0 perform in high-temperature environments, and what are the implications for system reliability when operating near its upper temperature limit?: The SG-8018CE 155.0200M-TJHSA0 is rated to operate reliably up to 105°C, which makes it suitable for industrial and automotive applications where elevated temperatures are common. However, frequency stability degrades slightly as temperature increases due to crystal resonator characteristics, with a specified tolerance of ±50ppm across the full -40°C to 105°C range. At sustained maximum operating temperature, the CMOS output may exhibit marginal rise/fall times, potentially affecting signal integrity in sensitive timing loops. Engineers should consider derating the oscillator’s phase noise performance under prolonged thermal stress and verify clock recovery margins in downstream logic.

What is the power consumption profile of the SG-8018CE 155.0200M-TJHSA0 during active versus standby modes, and how does this impact battery-powered system design?: During active operation, the SG-8018CE 155.0200M-TJHSA0 draws up to 8.1mA at 3.63V supply voltage. In standby (power-down) mode, current consumption drops significantly to a maximum of 1.1µA, enabling low-power sleep states. For systems with intermittent wake-up cycles—such as sensor networks or IoT edge devices—this enables substantial energy savings. Assuming a typical 2.5V supply and 1-second active bursts every 10 seconds, average current draw would be approximately 0.82mA, extending battery life by over an order of magnitude compared to continuous operation. Designers must ensure proper control of the standby pin to avoid unintended oscillation or increased quiescent current.

How does the frequency stability specification of ±50ppm affect timing accuracy in a Gigabit Ethernet PHY implementation using the SG-8018CE 155.0200M-TJHSA0?: With a center frequency of 155.02MHz, ±50ppm translates to a maximum deviation of ±7.75kHz from nominal. Over a 1ms interval, this equates to a timing error of ±7.75 nanoseconds. In Gigabit Ethernet systems requiring precise symbol timing and clock recovery, such jitter can accumulate and degrade link margin if not compensated by robust PLL design or spread spectrum techniques. While many PHYs tolerate this level of drift under normal conditions, long-term frequency drift due to aging or temperature cycling may push the oscillator outside acceptable MII or RGMII synchronization windows without additional calibration.

Can the SG-8018CE 155.0200M-TJHSA0 be used as a reference clock for a PCIe Gen3 device, and what layout considerations are critical to maintain signal integrity?: Although the SG-8018CE 155.0200M-TJHSA0 outputs a stable 155.02MHz CMOS signal, it is not specifically qualified for PCIe reference clocks, which typically require 100MHz (±300ppm) or 125MHz (±50ppm) with strict jitter performance (<1ps RMS). The oscillator’s output rise time and phase noise may exceed PCIe compliance requirements for clock inputs. If used indirectly—such as in a clock multiplier unit generating a derived reference—it must be followed by a clean-up PLL. Critical PCB layout practices include minimizing trace length from the oscillator to the load, using controlled impedance routing, avoiding vias near pads, and placing decoupling capacitors within 2mm of VCC/GND pins to suppress supply-induced noise.

How does the SG-8018CE 155.0200M-TJHSA0 compare to alternative 155MHz oscillators in terms of size, power, and cost for compact embedded designs?: The SG-8018CE 155.0200M-TJHSA0 measures 3.20mm x 2.50mm, making it one of the smallest surface-mount CMOS XOs available. Compared to larger 5.0x3.2mm packages or ceramic resonators, it offers superior integration density. Power efficiency is competitive, with sub-9mA active current and ultra-low standby leakage. Cost-wise, EPSON’s volume pricing often places this part below $1.00 per unit in quantities exceeding 1k, though specialized alternatives with integrated buffers or lower jitter may command premiums. For space-constrained designs like mobile backhaul radios or FPGA-based prototyping boards, the SG-8018CE provides an optimal balance between footprint, power, and performance without sacrificing reliability.

What are the key differences between the SG-8018CE 155.0200M-TJHSA0 and standard fundamental-mode crystals when used in frequency synthesis chains?: Unlike discrete crystals that require external inverters, feedback resistors, and load capacitors, the SG-8018CE 155.0200M-TJHSA0 is a complete oscillator module integrating the crystal, drive circuitry, and CMOS buffer into a single package. This eliminates design complexity, reduces BOM count, and improves consistency. A fundamental-mode crystal at 155.02MHz would need careful tuning of parallel capacitance and exhibit higher susceptibility to parasitic effects. The SG-8018CE also provides built-in start-up assurance and shutdown control via its standby pin, which cannot be replicated with passive crystals alone. However, the module’s fixed frequency limits flexibility in fine-tuning applications, whereas crystal-only solutions allow adjustable frequency via varactors or switched capacitors.

Is the SG-8018CE 155.0200M-TJHSA0 suitable for use in medical imaging equipment requiring long-term frequency accuracy?: Medical imaging systems demand exceptional long-term stability, often better than ±20ppm over five years. The SG-8018CE 155.0200M-TJHSA0 offers initial accuracy within ±50ppm but exhibits typical aging rates of ±3ppm per year in crystal oscillators of this class. After five years, total accumulated deviation could reach ±15ppm, bringing total frequency error within acceptable bounds for some diagnostic modalities. However, high-resolution MRI or CT scanners with stringent timing coherence may require oven-controlled or temperature-compensated alternatives. The SG-8018CE’s RoHS3 compliance and MSL1 rating support clean manufacturing processes, aligning with medical device hygiene standards, but qualification testing against IEC 60601-1 would still be necessary.

How does moisture sensitivity (MSL1) influence storage and handling of the SG-8018CE 155.0200M-TJHSA0 in high-humidity production environments?: Classified as MSL1 (Unlimited), the SG-8018CE 155.0200M-TJHSA0 can be stored indefinitely at ambient conditions without requiring baking prior to reflow. This simplifies inventory management in humid climates or extended warehouse storage. Nevertheless, exposure to condensation during handling—especially after opening the dry-pack—can lead to popcorning during soldering. Best practice dictates storing components in original moisture-barrier bags with desiccant until immediate use. Process engineers should monitor bag opening logs and ensure dry cabinets maintain <10% relative humidity to preserve solder joint quality and prevent latent damage.

What happens to the output signal if the SG-8018CE 155.0200M-TJHSA0 is powered outside its recommended 1.62V–3.63V range?: Operating the SG-8018CE 155.0200M-TJHSA0 below 1.62V risks incomplete startup or excessive pull-up resistor heating, leading to degraded waveform amplitude and possible failure to toggle. Exceeding 3.63V violates absolute maximum ratings and may permanently damage the internal CMOS driver or bias circuitry. Even brief excursions above 4.0V can cause latch-up or gate oxide breakdown. If a system experiences brownout conditions, the oscillator might enter an undefined state, drawing excessive current or producing distorted CMOS levels incompatible with downstream TTL/CMOS logic thresholds. Robust power sequencing and regulation are essential to maintain compliance within datasheet limits.

Can multiple instances of the SG-8018CE 155.0200M-TJHSA0 be synchronized in a multi-clock domain FPGA design, and what precautions apply?: Due to its fixed-frequency architecture and lack of internal phase-locking mechanism, individual SG-8018CE 155.0200M-TJHSA0 units will drift relative to each other over time and temperature. Attempting to synchronize them directly through software or asynchronous FIFOs introduces metastability risks. Instead, designers should derive all secondary clocks from a single master oscillator using FPGA DCMs or MMCMs. If multiple independent sources are unavoidable, they must be isolated with FIFO synchronizers rated for worst-case skew accumulation. Long-term tracking errors between two 155.02MHz signals could exceed 385Hz after one hour due to ±50ppm instability, necessitating periodic resynchronization or use of disciplined oscillators with GPS-disciplined references.

How does the height profile of the SG-8018CE 155.0200M-TJHSA0 impact placement on double-sided PCBs with tall components nearby?: Standing 1.20mm maximum above the board, the SG-8018CE 155.0200M-TJHSA0 occupies modest vertical space, allowing coexistence with most connectors and heatsinks. However, in densely populated assemblies—such as blade servers or modular transceivers—its height may interfere with adjacent SMD parts or obstruct airflow. Careful Z-axis clearance planning is required during 3D mechanical checks. Additionally, taller components near the oscillator can create capacitive coupling paths that induce noise onto the output trace, degrading jitter performance. Maintaining a minimum 2mm separation from other high-impedance nodes and routing the output differentially (if supported) helps mitigate these effects.

What is the expected lifetime of the SG-8018CE 155.0200M-TJHSA0 under continuous operation, and how does it compare to industry benchmarks?: EPSON specifies a minimum operational life of 10 years at 25°C with standard reliability screening. Field data from similar SG-8018 series devices indicates median failure rates below 50 FIT (Failures In Time) under accelerated life testing. This aligns with typical expectations for quartz-based oscillators in commercial-grade applications. Factors such as vibration, thermal cycling, and electrical overstress can accelerate degradation. For mission-critical systems, engineers often implement redundancy or health monitoring via microcontroller readback of clock status pins. The component’s absence of moving parts and sealed SMD packaging contribute to its robustness compared to electromechanical resonators.

Is the SG-8018CE 155.0200M-TJHSA0 compatible with automated pick-and-place equipment, and what assembly risks should be mitigated?: Packaged in Tape & Reel (TR), the SG-8018CE 155.0200M-TJHSA0 is fully compatible with standard SMT feeders and placement machines. Its small size and no-lead design simplify vacuum pickup reliability. However, during reflow profiling, excessive dwell time above 260°C can compromise internal bond wires or alter crystal motional parameters. Peak temperatures should remain below 250°C for ≤30 seconds to preserve frequency stability. Paste bridging between pads is rare due to tight spacing, but solder wicking into the cavity is possible if mask registration is poor. Stencil apertures should match pad geometry closely, and nitrogen reflow can reduce oxidation and improve wetting uniformity.

How does the SG-8018CE 155.0200M-TJHSA0 handle rapid power transitions in a power-managed SoC environment?: The oscillator features a dedicated standby (STBY) pin that disables the output stage while maintaining bias currents, reducing supply current to 1.1µA max. When transitioning from standby to active mode, typical start-up time is ≤1ms, allowing quick clock recovery for time-sensitive protocols like SPI or UART handshakes. However, abrupt voltage dips during wake-up can cause transient oscillations or undershoot on the output, potentially corrupting data edges. Adding a small bypass capacitor (100nF) near the STBY pin and ensuring clean ramp-up of VDD minimizes these effects. Designers should avoid glitching the enable signal and allow sufficient settling before asserting synchronous reset signals.

What environmental certifications support the use of the SG-8018CE 155.0200M-TJHSA0 in global defense or aerospace applications?: While the SG-8018CE 155.0200M-TJHSA0 meets RoHS3 and REACH standards, it lacks specific MIL-PRF or DO-254 qualifications needed for defense or avionics. Its ECCN classification (EAR99) indicates it is not subject to export controls, simplifying international sourcing. For military or aerospace use, supplementary testing against RTCA/DO-160 or MIL-STD-883 would be required to validate performance under shock, vibration, and radiation environments. The component’s commercial-grade temperature range (-40°C to +105°C) may also fall short of extended aerospace requirements (-55°C to +125°C). Thus, it is best suited for non-flight hardware in COTS-based systems rather than certified subsystems.

How does the SG-8018CE 155.0200M-TJHSA0 compare to TCXOs or OCXOs in terms of phase noise and stability for precision timing applications?: The SG-8018CE 155.0200M-TJHSA0 is a basic CMOS oscillator without temperature compensation, resulting in higher phase noise floor (~-140 dBc/Hz at 10kHz offset) compared to TCXOs (~-150 dBc/Hz) or OCXOs (~-160 dBc/Hz). Its ±50ppm stability over temperature also exceeds the capabilities of uncompensated XOs but lags behind TCXO (±0.5ppm) or OCXO (±0.01ppm). For applications requiring sub-microsecond timing accuracy over minutes, such as network time protocol (NTP) stratum clocks, this oscillator suffices. However, for phase-coherent RF sampling or radar systems, higher-performance references are mandatory. The choice hinges on trade-offs between cost, power, size, and required Allan deviation.

Can the SG-8018CE 155.0200M-TJHSA0 drive multiple loads without buffering, and what loading effects should be anticipated?: The SG-8018CE 155.0200M-TJHSA0 has limited fan-out capability due to its CMOS output stage, typically supporting ≤2 standard CMOS loads (fan-out = 1). Driving more loads causes signal attenuation, increased rise/fall times, and potential logic threshold violations at the receiving end. Parasitic capacitance from long traces or unterminated inputs exacerbates ringing and EMI emissions. To extend reach, designers should insert a buffer IC near the source or use a differential line driver. Impedance matching becomes critical beyond 5cm trace lengths, especially at 155MHz where wavelength is ~1.9m. Termination resistors may be needed in point-to-point links to prevent reflections.

What documentation and lifecycle information is available for the SG-8018CE 155.0200M-TJHSA0 to support obsolescence planning?: EPSON provides full datasheets, application notes, and parametric search tools covering the SG-8018CE 155.0200M-TJHSA0 series. The product appears in active production with no announced discontinuation. Historical variants in the SG-8018 family show consistent pinouts and electrical characteristics, easing migration. However, engineers should monitor Epson’s product status page and request formal End-of-Life notifications well in advance. Given its widespread adoption in telecom infrastructure, long availability is expected, but dual-sourcing against equivalent models (e.g., SiTime or Abracon equivalents) is advisable for high-reliability programs.

Parts with Similar Specifications

The three parts on the right have similar specifications to EPSON SG-8018CE 155.0200M-TJHSA0

Product Attribute
Part Number	SG-8018CE 155.0520M-TJHSA0	SG-8018CE 155.0250M-TJHSA0	SG-8018CE 155.2000M-TJHSA0	SG-8018CE 155.0000M-TJHSA0
Manufacturer	EPSON	EPSON	EPSON	EPSON
Absolute Pull Range (APR)	-	-	-	-
Frequency	-	-	-	-
Function	-	-	-	-
Size / Dimension	-	-	-	-
Package / Case	-	196-LFBGA	16-DIP (0.300', 7.62mm)	64-VFQFN Exposed Pad
Type	-	-	-	-
Current - Supply (Max)	-	-	-	-
Spread Spectrum Bandwidth	-	-	-	-
Voltage - Supply	-	-	-	-
Current - Supply (Disable) (Max)	-	-	-	-
Mounting Type	-	Surface Mount	Through Hole	Surface Mount
Base Resonator	-	-	-	-
Output	-	-	-	-
Frequency Stability	-	-	-	-
Series	-	-	-	-
Package	-	Tape & Reel (TR)	Tube	Tape & Reel (TR)
Operating Temperature	-	-40°C ~ 85°C	0°C ~ 70°C	-40°C ~ 85°C
Ratings	-	-	-	-
Height - Seated (Max)	-	-	-	-

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