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SFSKA5M50CF00-R3
Murata Electronics
CER FILTER 5.5MHZ DISCRIMINATOR
2294 Pcs New Original In Stock
5.5MHz Center Discriminator Ceramic Filter 60 kHz 600Ohm 6-SMD, No Lead
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5.0 / 5.0
- (345 Ratings)
SFSKA5M50CF00-R3
Product Overview
7225552
DiGi Electronics Part Number
SFSKA5M50CF00-R3-DGManufacturer
Murata Electronics
SFSKA5M50CF00-R3
Description
CER FILTER 5.5MHZ DISCRIMINATORInventory
2294 Pcs New Original In Stock
5.5MHz Center Discriminator Ceramic Filter 60 kHz 600Ohm 6-SMD, No Lead
Quantity
Minimum 1
Minimum 1
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SFSKA5M50CF00-R3 Technical Specifications
Category
Ceramic Filters
Packaging
-
Series
CERAFIL®, SFSKA
Product Status
Obsolete
Frequency
5.5MHz Center
Impedance
600Ohm
Bandwidth
60 kHz
Insertion Loss
6dB
Filter Type
Discriminator
Mounting Type
Surface Mount
Package / Case
6-SMD, No Lead
Size / Dimension
0.335" L x 0.150" W (8.50mm x 3.80mm)
Height (Max)
0.079" (2.00mm)
Base Product Number
SFSKA
Datasheet & Documents
HTML Datasheet
SFSKA5M50CF00-R3-DG
Environmental & Export Classification
RoHS Status
ROHS3 Compliant
Moisture Sensitivity Level (MSL)
3 (168 Hours)
ECCN
EAR99
HTSUS
8543.70.9860
Additional Information
Other Names
490-8574-6
SFSKA5M50CF00-R3-DG
490-8574-1
490-8574-2
Standard Package
3,000
Reviews
5.0/5.0-(Show up to 5 Ratings)
December 02, 2025
Ich bin begeistert von der Freundlichkeit des Teams und den fairen Preisen bei DiGi Electronics.
December 02, 2025
DiGi Electronics offers reliable products that are also budget-friendly.
December 02, 2025
DiGi Electronics offers outstanding packaging that ensures all components arrive safe and intact every time, reducing worries about damage during transit.
December 02, 2025
My order reached me ahead of schedule, thanks to their excellent logistics.
December 02, 2025
Their clear return and refund policies build trust and reduce purchasing anxiety.
December 02, 2025
DiGi Electronics offers exceptional after-sales support, making me feel confident in every purchase.
December 02, 2025
The logistics staff did a fantastic job ensuring quick and safe delivery with eco packaging.
December 02, 2025
The support team responds promptly and effectively to post-purchase inquiries.
December 02, 2025
They consistently deliver orders faster than expected.
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Frequently Asked Questions (FAQ)
What are the key design-in risks when using the SFSKA5M50CF00-R3 in a new FM receiver circuit, and how can insertion loss affect system sensitivity?
When designing in the SFSKA5M50CF00-R3, a critical risk is its 6dB typical insertion loss, which can degrade the signal-to-noise ratio in low-level IF stages of FM receivers. To mitigate this, ensure subsequent amplifier gain and noise figure are optimized—use a low-noise amplifier (LNA) or IF amplifier with high gain and minimal added noise. Additionally, because the SFSKA5M50CF00-R3 is a ceramic discriminator filter with fixed 600Ω impedance, verify that the source and load impedances are tightly matched to prevent passband ripple or skew. Mismatched impedances may distort demodulated audio. Due to its obsolete status, secure long-term supply or plan for redesign using modern alternatives with comparable bandwidth and group delay performance.
How does the obsolescence of the SFSKA5M50CF00-R3 impact long-term reliability and replacement strategy in existing production designs?
The obsolete status of the SFSKA5M50CF00-R3 poses significant long-term reliability risks for sustained manufacturing and field servicing. While current stock (2191 pcs) is available, future supply is uncertain. For existing designs, assess end-of-life timelines and consider lifetime buys or authorized redistribution channels. For replacement, evaluate functional equivalents like the Murata SFSKA5M50FA00-R0 or TDK’s CFM5M50C600H80, ensuring compatibility in center frequency (5.5MHz), bandwidth (60 kHz), and impedance (600Ω). Perform bench testing to validate group delay flatness and amplitude response match, as deviations can distort demodulated audio in FM systems.
Can the SFSKA5M50CF00-R3 be used in impedance-mismatched circuits, and what are the signal integrity trade-offs in 600Ω vs. 50Ω systems?
The SFSKA5M50CF00-R3 is designed for 600Ω impedance systems, and using it in 50Ω-biased circuits without proper buffering risks poor signal integrity, including increased reflection, amplitude ripple, and degraded bandwidth. Direct impedance mismatch can also shift the effective center frequency due to parasitic coupling. To integrate the SFSKA5M50CF00-R3 into lower impedance systems, use high-input-impedance buffer amplifiers or impedance-matching networks (e.g., LC transformers). However, added components may introduce phase nonlinearity affecting discriminator demodulation accuracy. Always simulate the passband response with extracted layout parasitics to avoid unintended performance drift.
What are the thermal and mechanical stress limitations of the SFSKA5M50CF00-R3 during reflow assembly, and how does MSL 3 impact manufacturing yield?
The SFSKA5M50CF00-R3 has a moisture sensitivity level (MSL) of 3 (168 hours floor life), requiring strict handling in humid environments—store in dry cabinets or sealed bags with desiccant if not used promptly. During reflow, follow JEDEC J-STD-020 guidelines for MSL 3 components: limit exposure to <60% RH and complete soldering within 168 hours after exposure. Use a profile with peak temperature ≤260°C (per RoHS compliance) and avoid thermal shock due to ceramic brittleness. Mechanical stress from PCB flexing or thermal cycling can crack the ceramic case, degrading filter performance. Minimize board stress through proper support and avoid placing the SFSKA5M50CF00-R3 near board edges or large components.
How does the SFSKA5M50CF00-R3 compare to the TDK CFM5M50C600H80 in cross-compatibility for IF filter replacement in legacy FM demodulators?
The SFSKA5M50CF00-R3 and TDK CFM5M50C600H80 both target 5.5MHz FM discriminator applications with 60 kHz bandwidth and 600Ω impedance, making them possible substitutes. However, subtle differences in group delay characteristics, temperature stability, and stopband rejection can affect demodulated audio clarity. The SFSKA5M50CF00-R3 may exhibit tighter phase linearity critical for distortion-free FM detection, while the TDK part could differ in temperature drift (e.g., ±500ppm/°C vs. ±300ppm/°C). Validate substitution with swept-frequency phase and amplitude testing across the operating range. Also, confirm footprint compatibility—though both are 6-SMD, ensure pad dimensions (8.50mm x 3.80mm) and pitch match to avoid re-layout. Due to the SFSKA5M50CF00-R3's obsolescence, always qualify second sources thoroughly under real operating conditions.
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.
SFSKA5M50CF00-R3 CAD Models
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