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CSTCE12M5G55-R0
Murata Electronics
CERAMIC RES 12.5000MHZ 33PF SMD
1988 Pcs New Original In Stock
12.5 MHz Ceramic Resonator Built in Capacitor 33 pF ±0.2% -20°C ~ 80°C Surface Mount
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5.0 / 5.0
- (397 Ratings)
CSTCE12M5G55-R0
Product Overview
7147467
DiGi Electronics Part Number
CSTCE12M5G55-R0-DGManufacturer
Murata Electronics
CSTCE12M5G55-R0
Description
CERAMIC RES 12.5000MHZ 33PF SMDInventory
1988 Pcs New Original In Stock
12.5 MHz Ceramic Resonator Built in Capacitor 33 pF ±0.2% -20°C ~ 80°C Surface Mount
Quantity
Minimum 1
Minimum 1
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CSTCE12M5G55-R0 Technical Specifications
Category
Resonators
Packaging
Tape & Reel (TR)
Series
CERALOCK® CSTCE
Product Status
Obsolete
Type
Ceramic
Frequency
12.5 MHz
Frequency Stability
±0.2%
Frequency Tolerance
±0.5%
Features
Built in Capacitor
Capacitance
33 pF
Operating Temperature
-20°C ~ 80°C
Mounting Type
Surface Mount
Package / Case
3-SMD, Non-Standard
Size / Dimension
0.126" L x 0.051" W (3.20mm x 1.30mm)
Height
0.031" (0.79mm)
Base Product Number
CSTCE
Datasheet & Documents
Part Numbering Guide
CERALOCK® Part Numbering
Manuals
CERALOCK® Series Appl Manual
Design Resources
CSTCE12M5G55-R0 SimSurfing Design Tool
HTML Datasheet
CSTCE12M5G55-R0-DG
Environmental & Export Classification
Moisture Sensitivity Level (MSL)
1 (Unlimited)
ECCN
EAR99
HTSUS
8548.00.0000
Additional Information
Other Names
490-11066-6
490-11066-1
490-11066-2
CSTCE12M5G55-R0-DG
Standard Package
3,000
Alternative Parts
View DetailsPART NUMBER
MANUFACTURER
QUANTITY AVAILABLE
DiGi PART NUMBER
UNIT PRICE
SUBSTITUTE TYPE
Reviews
5.0/5.0-(Show up to 5 Ratings)
December 02, 2025
Une expérience d’achat en ligne simple, intuitive et économique, qui répond parfaitement à nos attentes.
December 02, 2025
Leur efficacité logistique et leurs prix avantageux font toute la différence pour moi.
December 02, 2025
The consistent quality and customer-focused approach make DiGi Electronics my preferred supplier.
December 02, 2025
Choosing DiGi Electronics is easy thanks to their reasonable prices.
December 02, 2025
Their rapid and reliable shipping coupled with excellent quality is unmatched.
December 02, 2025
Online experience was smooth, with quick updates on my queries and efficient resolution.
December 02, 2025
The clarity in their pricing helps me avoid unexpected costs.
December 02, 2025
Customer service interactions feel personalized and genuine at DiGi Electronics.
December 02, 2025
DiGi Electronics demonstrates a genuine commitment to customer care after sales.
December 02, 2025
The robustness of DiGi Electronics' products is impressive; they handle rough handling during commutes without any issues.
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Frequently Asked Questions (FAQ)
Can I use the CSTCE12M5G55-R0 ceramic resonator in a high-reliability industrial application where temperature varies between -20°C and 80°C, and what are the risks of frequency drift over time?
Yes, the CSTCE12M5G55-R0 is rated for operation from -20°C to 80°C with a frequency stability of ±0.2%, making it suitable for many industrial environments. However, because it is a ceramic resonator—not a crystal—frequency drift due to aging and mechanical stress is more pronounced. In long-term deployments, expect up to ±0.5% frequency tolerance over life. For timing-critical applications like UART communications at higher baud rates (e.g., 115200+), verify margin in your microcontroller's tolerance. Consider adding software-based calibration or selecting a temperature-compensated crystal oscillator (TCXO) if stability is critical. Also note the part is marked as obsolete, so long-term availability is a supply chain risk.
What are the design-in risks of replacing a standard crystal oscillator with the CSTCE12M5G55-R0 in an SMD layout designed for a 32.768 kHz watch crystal?
Replacing a 32.768 kHz crystal with the CSTCE12M5G55-R0 is not feasible due to fundamental frequency and load capacitance mismatches—this resonator operates at 12.5 MHz with a fixed 33 pF built-in capacitor. Microcontroller oscillator circuits tuned for low-frequency crystals often use different drive levels and feedback resistor configurations, which may not reliably start or sustain oscillation at 12.5 MHz. Additionally, the PCB footprint of the CSTCE12M5G55-R0 (3.20mm x 1.30mm) differs from typical tuning-fork crystals. To mitigate risks, redesign the oscillator circuit using the host MCU's high-speed oscillator (HSE) configuration, ensure proper trace impedance, minimize stray capacitance, and validate startup time and signal integrity with an oscilloscope using a current probe.
Is the CSTCE12M5G55-R0 a viable drop-in replacement for the CSTNE12M5G550000R0, and what design considerations should I evaluate before swapping them?
The CSTCE12M5G55-R0 and CSTNE12M5G550000R0 are functionally similar—both are 12.5 MHz SMD ceramic resonators with 33 pF built-in capacitance and nearly identical frequency tolerance—but are in different product series (CSTCE vs. CSTNE). While pin-compatible and similar in footprint, verify exact pad dimensions and reflow profile compatibility, as minor package variations can impact solder joint reliability. A key design consideration is that both parts share the same 'Built in Capacitor' feature, eliminating the need for external load capacitors; ensure your design doesn't include them, as this would over-couple and potentially prevent oscillation. Also, confirm the CSTNE variant is still active, as the CSTCE series is listed as obsolete—swapping into an obsolete part introduces long-term supply risk.
How does the built-in 33 pF capacitor in the CSTCE12M5G55-R0 affect oscillator circuit design compared to using an external crystal with discrete capacitors?
The integrated 33 pF capacitor in the CSTCE12M5G55-R0 simplifies layout by eliminating the need for external load capacitors, reducing component count and board space. However, this fixed capacitance limits tuning flexibility—if your microcontroller requires a different effective capacitance for optimal stability or startup, you cannot adjust it. Also, parasitic PCB capacitance becomes more critical; keep traces short and avoid ground planes underneath to prevent lowering the effective LC resonance point. In noisy environments, the lack of external capacitors limits EMI filtering options. Always consult the MCU's oscillator design guide and simulate startup time; in marginal cases, consider adding a small series resistor (10–33 Ω) to dampen ringing and improve reliability.
What are the reliability concerns when designing the CSTCE12M5G55-R0 into a consumer electronics product with a 10-year expected lifespan?
While the CSTCE12M5G55-R0 has an MSL rating of 1 (unlimited floor life) and performs within -20°C to 80°C, its reliability over a 10-year lifespan is limited by ceramic resonator aging and environmental vulnerability. Expected frequency drift can reach ±0.5% due to mechanical stress, thermal cycling, and moisture absorption—even in sealed enclosures. In timing-sensitive applications (e.g., real-time clocks or wireless protocols), this may cause communication errors or synchronization failures. Additionally, the part is marked as obsolete, which poses significant supply chain and repairability risks over a decade. For long-life products, design with lifecycle-managed components and consider obsolescence mitigation strategies such as last-time buys or alternate sourcing through authorized distributors.
Quality Assurance (QC)
DiGi ensures the quality and authenticity of every electronic component through professional inspections and batch sampling, guaranteeing reliable sourcing, stable performance, and compliance with technical specifications, helping customers reduce supply chain risks and confidently use components in production.
CSTCE12M5G55-R0 CAD Models
Murata Electronics CSTCE12M5G55-R0 PCB symbols & footprints
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