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CSTCC2M45G53-R0
Murata Electronics
CERAMIC RES 2.4500MHZ 15PF SMD
3730 Pcs New Original In Stock
2.45 MHz Ceramic Resonator Built in Capacitor 15 pF ±0.3% -20°C ~ 80°C Surface Mount
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5.0 / 5.0
- (118 Ratings)
CSTCC2M45G53-R0
Product Overview
7147924
DiGi Electronics Part Number
CSTCC2M45G53-R0-DGManufacturer
Murata Electronics
CSTCC2M45G53-R0
Description
CERAMIC RES 2.4500MHZ 15PF SMDInventory
3730 Pcs New Original In Stock
2.45 MHz Ceramic Resonator Built in Capacitor 15 pF ±0.3% -20°C ~ 80°C Surface Mount
Quantity
Minimum 1
Minimum 1
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CSTCC2M45G53-R0 Technical Specifications
Category
Resonators
Packaging
-
Series
CERALOCK® CSTCC
Product Status
Obsolete
Type
Ceramic
Frequency
2.45 MHz
Frequency Stability
±0.3%
Frequency Tolerance
±0.5%
Features
Built in Capacitor
Capacitance
15 pF
Operating Temperature
-20°C ~ 80°C
Mounting Type
Surface Mount
Package / Case
3-SMD, Non-Standard
Size / Dimension
0.283" L x 0.118" W (7.20mm x 3.00mm)
Base Product Number
CSTCC
Datasheet & Documents
Part Numbering Guide
CERALOCK® Part Numbering
Manuals
CERALOCK® Series Appl Manual
HTML Datasheet
CSTCC2M45G53-R0-DG
Environmental & Export Classification
RoHS Status
ROHS3 Compliant
Moisture Sensitivity Level (MSL)
1 (Unlimited)
ECCN
EAR99
HTSUS
8548.00.0000
Additional Information
Other Names
490-7843-DG
490-7843-1
490-7843-2
490-7843-6
CSTCC2M45G53-R0-DG
490-7843
Standard Package
2,000
Reviews
5.0/5.0-(Show up to 5 Ratings)
December 02, 2025
Their focus on innovation combined with quality gives them an edge.
December 02, 2025
Their focus on quality makes them my preferred supplier.
December 02, 2025
Their dedication to environmental sustainability through packaging is highly commendable.
December 02, 2025
Thanks to DiGi, we've achieved significant cost savings in our procurement.
December 02, 2025
They kept me informed throughout the shipping process.
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Frequently Asked Questions (FAQ)
Can CSTCC2M45G53-R0 ceramic resonator be used as a drop-in replacement for an ECS-245-15-30X1 in a 2.45 MHz oscillator circuit?
The CSTCC2M45G53-R0 is not a direct drop-in replacement for the ECS-245-15-30X1 due to differences in internal construction and load capacitance integration. While both operate at 2.45 MHz with ~15 pF effective capacitance, the CSTCC2M45G53-R0 includes built-in capacitors, eliminating the need for external load capacitors, whereas the ECS-245-15-30X1 typically requires external 15 pF caps. Circuit redesign is required to avoid overloading the oscillator inverter or causing startup issues. Verify MCU oscillator circuit requirements and adjust feedback resistor and drive level accordingly when switching to CSTCC2M45G53-R0 to ensure stable oscillation and prevent crystal drive level damage.
What are the main design risks when using CSTCC2M45G53-R0 in automotive applications near the 80°C operating temperature limit?
Using CSTCC2M45G53-R0 in automotive environments near 80°C risks frequency drift beyond ±0.3% stability due to thermal stress, especially under dynamic temperature cycling. Although the part is rated up to 80°C, prolonged exposure at upper limits can accelerate aging and reduce long-term reliability. Additionally, the non-hermetic ceramic package may absorb moisture in high-humidity environments, affecting resonance. To mitigate, design with a 10–15°C derating margin, use conformal coating, and validate performance across temperature ramps and power cycles. Consider upgrading to an AEC-Q200 compliant resonator if extended temperature or reliability is critical.
Why might CSTCC2M45G53-R0 fail to start oscillation in a low-power MCU sleep-to-wake application?
CSTCC2M45G53-R0 may fail to start in low-power MCU modes due to insufficient drive level during wake-up, especially if the oscillator gain margin is marginal. The built-in 15 pF capacitors reduce component count but limit tuning flexibility, making startup sensitive to PCB stray capacitance and power supply rise time. To resolve, ensure MCU oscillator mode is set to correct gain (e.g., high-speed mode), minimize trace length between MCU and CSTCC2M45G53-R0, and verify that VDD ramp time is slow enough to allow oscillator stabilization. Adding a series resistor (100–330 Ω) can help control drive level and improve reliable startup.
Is the CSTCC2M45G53-R0 suitable for replacement in legacy designs where the original ceramic resonator is discontinued?
The CSTCC2M45G53-R0 can serve as a second-source or replacement option in legacy designs but with caution due to its obsolete status (Product Status: Obsolete). Key risks include future supply chain discontinuity and lack of long-term availability for maintenance production. When replacing, verify pin compatibility (3-SMD non-standard footprint) and confirm that the 15 pF built-in capacitor aligns with the oscillator circuit’s load requirement—some legacy circuits expect external caps. Cross-check frequency tolerance (±0.5%) and stability (±0.3%) against system timing requirements, especially for serial communication peripherals. Consider redesigning with a current-production part like the Murata CSTNE2M45G53 or TXC 7B series for better availability.
How does the integrated 15 pF capacitor in CSTCC2M45G53-R0 affect EMI performance compared to discrete ceramic resonators?
The integrated 15 pF capacitor in CSTCC2M45G53-R0 reduces PCB parasitics and trace length, which can lower EMI emissions by minimizing high-frequency loop area in the oscillator circuit. However, the fixed internal capacitance limits fine-tuning for EMI optimization—unlike discrete resonators with external caps that allow minor adjustments to suppress harmonic peaks. To manage EMI, use a solid ground plane, shield sensitive traces, and avoid routing near the CSTCC2M45G53-R0. Additionally, verify emissions compliance in final assembly, as variations in MCU output impedance and PCB layout may shift resonant peaks even with integrated caps.
Quality Assurance (QC)
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CSTCC2M45G53-R0 CAD Models
Murata Electronics CSTCC2M45G53-R0 PCB symbols & footprints
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