CTS-Frequency Controls 416F27022CST 27 MHz Crystal Equivalent & Substitute Parts

Part Overview

The CTS-Frequency Controls 416F27022CST is a 27 MHz fundamental mode crystal oscillator in a 4-SMD surface mount package with no lead configuration. This component is designed for applications requiring precise frequency control at 27 MHz with tight stability specifications. The part is currently discontinued at DiGi Electronics, making identification of equivalent substitute parts essential for ongoing production and maintenance applications. The 416F27022CSR serves as the direct parametric equivalent with identical electrical and mechanical specifications.

Key Parameters

Parameter	Value
Frequency	27 MHz
Frequency Stability	±20ppm
Frequency Tolerance	±20ppm
Load Capacitance	Series
ESR (Equivalent Series Resistance)	120 Ohms
Operating Mode	Fundamental
Operating Temperature Range	-20°C to 70°C
Mounting Type	Surface Mount
Package / Case	4-SMD, No Lead
Size / Dimension	0.063" L x 0.047" W (1.60mm x 1.20mm)
Height - Seated (Max)	0.018" (0.45mm)
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)
REACH Status	REACH Unaffected

Substitute Part Grouping Explanation

The 416F27022CSR is classified as a parametric equivalent to the 416F27022CST based on strict alignment of the following critical parameters:

Frequency: 27 MHz (identical)
Frequency Stability: ±20ppm (identical)
Frequency Tolerance: ±20ppm (identical)
ESR: 120 Ohms (identical)
Operating Mode: Fundamental (identical)
Operating Temperature Range: -20°C to 70°C (identical)
Package / Case: 4-SMD, No Lead (identical)
Physical Dimensions: 0.063" L x 0.047" W, 0.018" max height (identical)
RoHS and REACH Compliance: ROHS3 Compliant, REACH Unaffected (identical)

The primary distinction between these parts is packaging format and product status. The 416F27022CST is supplied in cut tape format and is discontinued, while the 416F27022CSR is supplied in Tape & Reel (TR) format and maintains active product status.

Parameter Comparison

Parameter	416F27022CST (Main Part)	416F27022CSR (Substitute)
Manufacturer	CTS-Frequency Controls	CTS-Frequency Controls
Series	416	416
Frequency	27 MHz	27 MHz
Frequency Stability	±20ppm	±20ppm
Frequency Tolerance	±20ppm	±20ppm
Load Capacitance	Series	Series
ESR	120 Ohms	120 Ohms
Operating Mode	Fundamental	Fundamental
Operating Temperature	-20°C to 70°C	-20°C to 70°C
Mounting Type	Surface Mount	Surface Mount
Package / Case	4-SMD, No Lead	4-SMD, No Lead
Size / Dimension	0.063" L x 0.047" W (1.60mm x 1.20mm)	0.063" L x 0.047" W (1.60mm x 1.20mm)
Height - Seated (Max)	0.018" (0.45mm)	0.018" (0.45mm)
RoHS Status	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)
REACH Status	REACH Unaffected	REACH Unaffected
Product Status	Discontinued at DiGi Electronics	Active
Packaging Format	Cut Tape	Tape & Reel (TR)

Engineering Selection Recommendations

The 416F27022CSR is the direct substitute for the discontinued 416F27022CST. Both parts are manufactured by CTS-Frequency Controls within the 416 series and share identical electrical specifications, mechanical dimensions, and compliance certifications. The 416F27022CSR maintains active product status and is available in Tape & Reel packaging, which is the standard format for production volume applications.

Selection of the 416F27022CSR is appropriate for all applications previously using the 416F27022CST, provided that the Tape & Reel packaging format is compatible with assembly processes. Both parts meet ROHS3 compliance and REACH requirements, ensuring regulatory alignment for current manufacturing standards.

Frequently Asked Questions (FAQ)

Q: Can the 416F27022CSR directly replace the 416F27022CST in existing designs?

A: Yes. The 416F27022CSR is electrically and mechanically identical to the 416F27022CST. All critical parameters including frequency, stability, ESR, operating temperature range, and physical dimensions are identical. The primary difference is packaging format (Tape & Reel versus cut tape) and product status (active versus discontinued).

Q: What is the difference between cut tape and Tape & Reel packaging?

A: Cut tape packaging supplies individual components in a continuous tape format cut to specific lengths, typically for lower-volume or maintenance applications. Tape & Reel packaging supplies components on a full reel, optimized for automated assembly processes and higher production volumes. Both formats contain the same component with identical specifications.

Q: Are there any compliance or certification differences between these parts?

A: No. Both the 416F27022CST and 416F27022CSR are ROHS3 compliant and REACH unaffected. Moisture sensitivity level is identical at MSL 1 (unlimited). All regulatory and environmental certifications are equivalent.

Q: What is the ESR specification and why is it important?

A: ESR (Equivalent Series Resistance) of 120 Ohms represents the internal resistance of the crystal at the specified frequency. This parameter is critical for oscillator circuit design and determines the drive level and startup characteristics. Both substitute parts maintain identical ESR specifications, ensuring circuit compatibility.

Q: Is the operating temperature range suitable for my application?

A: Both parts operate across -20°C to 70°C. Verify that your application requirements fall within this range. If extended temperature operation is required, alternative crystal specifications from the CTS-Frequency Controls 416 series may be necessary.

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