7V-27.000MDDV-T 27 MHz Crystal Equivalent & Substitute Parts

Part Overview

The 7V-27.000MDDV-T is a 27 MHz fundamental mode crystal oscillator manufactured by TXC CORPORATION in a 4-SMD, No Lead surface mount package. This component is classified as Active product status and is RoHS Compliant. The part is specified for 8pF load capacitance with 60 Ohms equivalent series resistance, operating across -20°C to 70°C temperature range with ±20ppm frequency stability and tolerance. Substitute parts are identified when equivalent electrical performance and mechanical compatibility can be maintained within the specified parameter ranges for this 27 MHz crystal category.

Key Parameters

Parameter	Value
Frequency	27 MHz
Frequency Stability	±20ppm
Frequency Tolerance	±20ppm
Load Capacitance	8pF
ESR (Equivalent Series Resistance)	60 Ohms
Operating Mode	Fundamental
Operating Temperature Range	-20°C to 70°C
Mounting Type	Surface Mount
Package / Case	4-SMD, No Lead
RoHS Status	RoHS Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of 27 MHz crystal components is determined by the following critical parameters: frequency (27 MHz), frequency stability (±20ppm), frequency tolerance (±20ppm), operating mode (Fundamental), operating temperature range (-20°C to 70°C), mounting type (Surface Mount), package type (4-SMD, No Lead), and compliance certifications (RoHS status). Load capacitance and ESR values may vary within acceptable ranges for circuit operation. All identified substitute parts maintain the core 27 MHz frequency specification, ±20ppm stability and tolerance, fundamental operating mode, and surface mount 4-SMD package configuration. Substitute parts are sourced from qualified manufacturers including TXC CORPORATION, FTS, Abracon LLC, and ECS Inc., all meeting RoHS compliance requirements.

Parameter Comparison

Parameter	7V-27.000MDDV-T (Main)	7V-27.000MDDQ-T	7R-27.000MDDQ-T	ABM10-27.000MHZ-E20-T	ECS-270-10-36-JTM-TR
Manufacturer	TXC CORPORATION	TXC CORPORATION	FTS	Abracon LLC	ECS Inc.
Frequency	27 MHz	27 MHz	27 MHz	27 MHz	27 MHz
Frequency Stability	±20ppm	±20ppm	±20ppm	±20ppm	±20ppm
Frequency Tolerance	±20ppm	±20ppm	±20ppm	±20ppm	±20ppm
Load Capacitance	8pF	10pF	10pF	10pF	10pF
ESR (Equivalent Series Resistance)	60 Ohms	60 Ohms	150 Ohms	100 Ohms	60 Ohms
Operating Mode	Fundamental	Fundamental	Fundamental	Fundamental	Fundamental
Operating Temperature Range	-20°C to 70°C	-20°C to 70°C	-20°C to 70°C	-20°C to 70°C	-20°C to 70°C
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Package / Case	4-SMD, No Lead	4-SMD, No Lead	4-SMD, No Lead	4-SMD, No Lead	4-SMD, No Lead
RoHS Status	RoHS Compliant	ROHS3 Compliant	RoHS Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	Not Applicable	1 (Unlimited)
Product Status	Active	Active	Active	Active	Active

Engineering Selection Recommendations

All identified substitute parts maintain Active product status and meet RoHS compliance requirements. The 7V-27.000MDDQ-T from TXC CORPORATION provides the closest electrical match with identical ESR (60 Ohms) and manufacturer consistency, differing only in load capacitance (10pF versus 8pF). The ECS-270-10-36-JTM-TR also maintains 60 Ohms ESR with equivalent electrical characteristics. The ABM10-27.000MHZ-E20-T from Abracon LLC carries ROHS3 Compliant status with 100 Ohms ESR. The 7R-27.000MDDQ-T from FTS is available with higher ESR specification (150 Ohms). All parts are certified for the specified operating temperature range and maintain fundamental mode operation at 27 MHz with ±20ppm stability and tolerance specifications.

Frequently Asked Questions (FAQ)

Q: Can the 7V-27.000MDDQ-T substitute for the 7V-27.000MDDV-T? A: Yes. Both parts are manufactured by TXC CORPORATION with identical frequency (27 MHz), frequency stability (±20ppm), ESR (60 Ohms), operating temperature range (-20°C to 70°C), and 4-SMD, No Lead package. The load capacitance differs (10pF versus 8pF), which may require circuit verification depending on oscillator design specifications.

Q: What is the significance of load capacitance differences between substitute parts? A: Load capacitance affects the crystal's resonant frequency in the oscillator circuit. The main part specifies 8pF, while substitute parts specify 10pF. Circuit design must accommodate the specified load capacitance value. Substitution with different load capacitance requires confirmation that the oscillator circuit design supports the alternate value.

Q: Are all substitute parts available in the same package configuration? A: Yes. All substitute parts are specified as 4-SMD, No Lead surface mount packages. Physical dimensions vary slightly between manufacturers, with the main part measuring 0.126" L x 0.098" W (3.20mm x 2.50mm), while some substitutes measure 0.098" L x 0.079" W (2.50mm x 2.00mm). PCB layout verification is required when substituting parts with different physical dimensions.

Q: What is the difference between RoHS Compliant and ROHS3 Compliant? A: Both designations indicate compliance with Restriction of Hazardous Substances regulations. ROHS3 represents the current version of the directive. All substitute parts meet applicable RoHS compliance requirements for this product category.

Q: Can ESR differences affect circuit performance? A: ESR (Equivalent Series Resistance) affects crystal impedance and power consumption in the oscillator circuit. The main part specifies 60 Ohms. Substitute parts range from 60 Ohms to 150 Ohms. Circuit design must support the specified ESR value. Substitution with significantly different ESR (such as the 7R-27.000MDDQ-T at 150 Ohms) requires circuit verification.

Q: Are all substitute parts in Active product status? A: Yes. All identified substitute parts maintain Active product status, indicating current availability and manufacturer support.

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