7V-12.000MDHV-T Crystal Oscillator Equivalent & Substitute Parts

Part Overview

The 7V-12.000MDHV-T is a 12 MHz fundamental mode crystal oscillator manufactured by TXC CORPORATION. This surface mount device is specified for 8pF load capacitance with ±20ppm frequency tolerance and operates across the -40°C to 85°C temperature range. The part is RoHS Compliant and carries Active product status. Substitute parts are identified when equivalent electrical and mechanical parameters align with application requirements, enabling procurement flexibility and supply chain continuity.

Key Parameters

Parameter	Value
Frequency	12 MHz
Frequency Tolerance	±20ppm
Load Capacitance	8pF
ESR (Equivalent Series Resistance)	150 Ohms
Operating Mode	Fundamental
Operating Temperature Range	-40°C to 85°C
Package / Case	4-SMD, No Lead
Size / Dimension	3.20mm x 2.50mm
Mounting Type	Surface Mount
RoHS Status	RoHS Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the 7V-12.000MDHV-T is determined by strict alignment of the following critical parameters:

Frequency: 12 MHz (exact match required)
Frequency Tolerance: ±20ppm (exact match required)
Load Capacitance: 8pF (exact match required)
Operating Mode: Fundamental (exact match required)
Operating Temperature Range: -40°C to 85°C (exact match required)
Package / Case: 4-SMD, No Lead (exact match required)
Size / Dimension: 3.20mm x 2.50mm (exact match required)
Mounting Type: Surface Mount (exact match required)
MSL Rating: 1 (Unlimited) (exact match required)

The identified substitute parts meet all critical electrical and mechanical parameters. Variations in ESR and height specifications do not preclude substitution when all primary parameters align.

Parameter Comparison

Parameter	7V-12.000MDHV-T (TXC)	ECS-120-8-33-JGN-TR (ECS Inc.)	STDCRG2-12M (NDK America)
Manufacturer	TXC CORPORATION	ECS Inc.	NDK America, Inc.
Frequency	12 MHz	12 MHz	12 MHz
Frequency Tolerance	±20ppm	±20ppm	±20ppm
Frequency Stability	±30ppm	±30ppm	±30ppm
Load Capacitance	8pF	8pF	8pF
ESR	150 Ohms	100 Ohms	100 Ohms
Operating Mode	Fundamental	Fundamental	Fundamental
Operating Temperature	-40°C to 85°C	-40°C to 85°C	-40°C to 85°C
Package / Case	4-SMD, No Lead	4-SMD, No Lead	4-SMD, No Lead
Size / Dimension	3.20mm x 2.50mm	3.20mm x 2.50mm	3.20mm x 2.50mm
Height - Seated (Max)	0.90mm	0.80mm	0.90mm
Mounting Type	Surface Mount	Surface Mount	Surface Mount
RoHS Status	RoHS Compliant	ROHS3 Compliant	RoHS Compliant
MSL	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
Product Status	Active	Active	Active

Engineering Selection Recommendations

Both substitute parts satisfy the electrical and mechanical requirements for direct replacement of the 7V-12.000MDHV-T. Selection between alternatives is based on the following factors:

ECS-120-8-33-JGN-TR (ECS Inc.) offers the lowest ESR at 100 Ohms and the minimum seated height of 0.80mm. This part carries ROHS3 Compliant status and REACH Unaffected designation. Inventory availability is 229,136 units.

STDCRG2-12M (NDK America, Inc.) maintains 100 Ohms ESR with a seated height of 0.90mm matching the original specification. RoHS Compliant status is confirmed. Inventory availability is 27,564 units.

All three parts maintain Active product status and meet MSL 1 (Unlimited) requirements, ensuring long-term supply viability and handling compatibility.

Frequently Asked Questions (FAQ)

Q: Can ECS-120-8-33-JGN-TR be used as a direct replacement for 7V-12.000MDHV-T?

A: Yes. Both parts share identical frequency (12 MHz), frequency tolerance (±20ppm), load capacitance (8pF), operating temperature range (-40°C to 85°C), package type (4-SMD, No Lead), and physical dimensions (3.20mm x 2.50mm). The lower ESR (100 Ohms vs. 150 Ohms) and reduced height (0.80mm vs. 0.90mm) do not prevent substitution.

Q: Can STDCRG2-12M be used as a direct replacement for 7V-12.000MDHV-T?

A: Yes. Both parts share identical frequency (12 MHz), frequency tolerance (±20ppm), load capacitance (8pF), operating temperature range (-40°C to 85°C), package type (4-SMD, No Lead), and physical dimensions (3.20mm x 2.50mm). The ESR specification (100 Ohms) and seated height (0.90mm) align with application requirements.

Q: What is the significance of ESR differences between these parts?

A: ESR (Equivalent Series Resistance) affects crystal oscillator performance characteristics including startup time and power consumption. The 7V-12.000MDHV-T specifies 150 Ohms, while both substitutes specify 100 Ohms. Lower ESR values represent improved performance characteristics and do not create compatibility issues in applications designed for the original specification.

Q: Are there any compliance differences between these parts?

A: The 7V-12.000MDHV-T and STDCRG2-12M carry RoHS Compliant status. The ECS-120-8-33-JGN-TR carries ROHS3 Compliant status, which represents an enhanced compliance level. All three parts maintain MSL 1 (Unlimited) rating and are suitable for applications requiring RoHS compliance.

Q: What is the impact of height variation on PCB assembly?

A: The ECS-120-8-33-JGN-TR has a maximum seated height of 0.80mm, while both the 7V-12.000MDHV-T and STDCRG2-12M specify 0.90mm. Height differences of this magnitude do not typically impact PCB layout or assembly processes for standard surface mount applications. Verify clearance requirements for your specific application.

Q: Are all three parts currently available?

A: Yes. The 7V-12.000MDHV-T has 1,084 units in stock. The ECS-120-8-33-JGN-TR has 229,136 units in stock. The STDCRG2-12M has 27,564 units in stock. All parts maintain Active product status.

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