CTS-Frequency Controls 416F27122CAT 27.12 MHz Crystal Equivalent & Substitute Parts

Part Overview

The 416F27122CAT is a 27.12 MHz fundamental mode crystal oscillator manufactured by CTS-Frequency Controls, designed for surface mount applications in 4-SMD, No Lead packaging. This part is discontinued at DiGi Electronics, making equivalent and substitute parts necessary for ongoing production and maintenance applications. The crystal operates across a temperature range of -20°C to 70°C with ±20ppm frequency stability and 10pF load capacitance.

Key Parameters

Parameter	Value
Frequency	27.12 MHz
Frequency Stability	±20ppm
Load Capacitance	10pF
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)
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution for the 416F27122CAT is determined by the following critical parameters: frequency (27.12 MHz), frequency stability (±20ppm), operating mode (Fundamental), package type (4-SMD, No Lead), physical dimensions (1.60mm x 1.20mm), operating temperature range (-20°C to 70°C), and compliance certifications (ROHS3, MSL 1).

Substitute parts are grouped into two categories:

Parametric Equivalents: Parts with identical electrical specifications including load capacitance (10pF) and ESR (120 Ohms). These parts are direct functional replacements.

Load Capacitance Variants: Parts with the same frequency, stability, ESR, and package but different load capacitance values (8pF or 12pF). These parts require circuit design verification to confirm compatibility with the application's load capacitance requirements.

Cross-Manufacturer Equivalents: Parts from alternative manufacturers meeting the same electrical and mechanical specifications with minor variations in ESR or height.

Parameter Comparison

Part Number	Manufacturer	Frequency	Frequency Stability	Load Capacitance	ESR	Package	Product Status	Inventory
416F27122CAT	CTS-Frequency Controls	27.12 MHz	±20ppm	10pF	120 Ohms	4-SMD, No Lead	Discontinued	783 Pcs
416F27122CAR	CTS-Frequency Controls	27.12 MHz	±20ppm	10pF	120 Ohms	4-SMD, No Lead	Active	924 Pcs
416F27122CKR	CTS-Frequency Controls	27.12 MHz	±20ppm	8pF	120 Ohms	4-SMD, No Lead	Active	649 Pcs
416F27122CLR	CTS-Frequency Controls	27.12 MHz	±20ppm	12pF	120 Ohms	4-SMD, No Lead	Active	658 Pcs
8Q-27.120MDDQ-T	FTS	27.12 MHz	±20ppm	10pF	100 Ohms	4-SMD, No Lead	Active	6506 Pcs

Engineering Selection Recommendations

Primary Recommendation: 416F27122CAR is the direct parametric equivalent with identical electrical and mechanical specifications. This part is manufactured by CTS-Frequency Controls, maintains ROHS3 compliance and MSL 1 rating, and is currently in active production status with higher inventory availability (924 Pcs).

Load Capacitance Variants: 416F27122CKR (8pF) and 416F27122CLR (12pF) are suitable only when the application circuit is designed for their respective load capacitance values. These parts maintain all other critical parameters and are active products with stable inventory.

Cross-Manufacturer Alternative: 8Q-27.120MDDQ-T from FTS meets the frequency, stability, load capacitance, and package requirements with a lower ESR specification (100 Ohms versus 120 Ohms). This part is RoHS Compliant and carries the highest inventory level (6506 Pcs). The reduced ESR may improve circuit performance in certain applications but requires verification against circuit design specifications.

Frequently Asked Questions (FAQ)

Q: Can 416F27122CKR or 416F27122CLR be used as direct replacements for 416F27122CAT?

A: These parts share the same frequency, stability, package, and ESR but differ in load capacitance (8pF and 12pF respectively, versus 10pF). Direct substitution is only valid if the application circuit is designed to operate with the alternate load capacitance value. Verify circuit design specifications before substitution.

Q: What is the difference between 416F27122CAR and 416F27122CAT?

A: These parts are parametrically identical. The primary difference is product status: 416F27122CAT is discontinued while 416F27122CAR is active. 416F27122CAR is the recommended replacement for new designs and ongoing production.

Q: Can the FTS 8Q-27.120MDDQ-T replace the CTS 416F27122CAT?

A: The FTS part meets all critical specifications including frequency, stability, load capacitance, and package dimensions. The ESR is lower (100 Ohms versus 120 Ohms), which may affect circuit performance. Verify circuit design compatibility before substitution.

Q: Are all substitute parts RoHS compliant?

A: Yes. The CTS parts (416F27122CAR, 416F27122CKR, 416F27122CLR) are ROHS3 Compliant. The FTS part (8Q-27.120MDDQ-T) is RoHS Compliant. All parts meet environmental compliance requirements.

Q: What is the significance of MSL 1 rating?

A: MSL 1 (Moisture Sensitivity Level 1) indicates unlimited shelf life with no special moisture control requirements during storage or handling. All listed parts carry this rating.

Q: Which substitute part has the best inventory availability?

A: The FTS 8Q-27.120MDDQ-T has the highest inventory level at 6506 Pcs. Among CTS parts, 416F27122CAR has 924 Pcs available.

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