7M-12.000MAHV-T Equivalent & Substitute Parts

Part Overview

The 7M-12.000MAHV-T is a 12 MHz fundamental mode crystal oscillator manufactured by TXC CORPORATION, designed for surface mount applications in 4-SMD, No Lead package configuration. This active product operates across the industrial temperature range of -40°C to 85°C with ±30ppm frequency stability and 8pF load capacitance specification. The component is RoHS compliant with MSL 1 rating, indicating unlimited moisture sensitivity protection. Substitute parts are identified when equivalent frequency, stability, and operating characteristics are required but alternative load capacitance or ESR specifications are acceptable within system design parameters.

Substiute Parts

7M-12.000MAHV-T

TXC CORPORATIONIn Stock: 23587M-12.000MAHV-T Datasheet

Current PartRFQ

8Z-12.000MAHQ-T

TXC CORPORATIONIn Stock: 143118Z-12.000MAHQ-T Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 7M-12.000MAHV-T is determined by the following critical parameters that must remain constant across equivalent parts:

Fixed Parameters (Non-Negotiable):

• Frequency: 12 MHz
• Frequency Stability: ±30ppm
• Operating Mode: Fundamental
• Operating Temperature Range: -40°C to 85°C
• Package / Case: 4-SMD, No Lead
• Mounting Type: Surface Mount
• RoHS Compliance: Required
• MSL Rating: 1 or better

Variable Parameters (Acceptable Variance):

• Load Capacitance: 8pF to 10pF
• ESR: 100 Ohms to 150 Ohms
• Physical dimensions within SMD envelope constraints

The 8Z-12.000MAHQ-T qualifies as a substitute because it maintains identical frequency, stability, operating mode, temperature range, package type, and compliance certifications. The load capacitance increase from 8pF to 10pF and ESR increase from 100 Ohms to 150 Ohms represent acceptable parameter variations for crystal oscillator substitution when circuit design accommodates these specifications.

Parameter Comparison

Engineering Selection Recommendations

Both the 7M-12.000MAHV-T and 8Z-12.000MAHQ-T are active products from TXC CORPORATION with identical regulatory compliance status. Selection between these parts is determined by circuit-specific load capacitance requirements:

Select 7M-12.000MAHV-T when:

• Circuit design specifies 8pF load capacitance
• Lower ESR (100 Ohms) is required for specific oscillator circuit topology
• Original design validation has been completed with this part number

Select 8Z-12.000MAHQ-T when:

• Circuit design accommodates 10pF load capacitance
• Higher ESR (150 Ohms) is acceptable within oscillator performance margins
• Supply chain availability of 7M-12.000MAHV-T is constrained (14,296 units in stock versus 2,339 units)

Both parts satisfy RoHS compliance, REACH requirements, and MSL 1 moisture sensitivity specifications. Physical dimension differences (3.20mm x 2.50mm versus 2.50mm x 2.00mm) and height variations (0.80mm versus 0.55mm) must be verified against PCB layout constraints and assembly equipment specifications.

Frequently Asked Questions (FAQ)

Q: Can the 8Z-12.000MAHQ-T directly replace the 7M-12.000MAHV-T without circuit modification?

A: Direct replacement is possible only if the circuit design accommodates 10pF load capacitance and 150 Ohms ESR. The oscillator circuit must be designed or validated to operate with these specifications. Load capacitance mismatch may affect frequency accuracy and startup characteristics.

Q: What is the significance of the load capacitance difference between these parts?

A: Load capacitance (8pF versus 10pF) determines the external capacitive loading required by the crystal oscillator circuit. The oscillator circuit must be designed for the specific load capacitance value. Using a crystal with incorrect load capacitance can result in frequency deviation beyond the ±30ppm specification.

Q: Are there physical mounting differences between these parts?

A: Yes. The 7M-12.000MAHV-T measures 3.20mm x 2.50mm with 0.80mm maximum seated height. The 8Z-12.000MAHQ-T measures 2.50mm x 2.00mm with 0.55mm maximum seated height. Both use 4-SMD, No Lead packages. PCB footprint and assembly clearance requirements must be verified for each part.

Q: Do both parts have identical regulatory compliance?

A: Yes. Both parts are RoHS compliant, REACH unaffected, and classified as EAR99 for export control purposes. MSL 1 rating applies to both, indicating unlimited moisture sensitivity protection.

Q: What is the inventory status for these parts?

A: The 7M-12.000MAHV-T has 2,339 units in stock. The 8Z-12.000MAHQ-T has 14,296 units in stock. Both are packaged in Tape & Reel (TR) format.

Q: Can ESR differences affect circuit performance?

A: ESR (Equivalent Series Resistance) affects crystal oscillator startup time, frequency stability, and power consumption. The 50 Ohm difference (100 Ohms versus 150 Ohms) may impact oscillator circuit performance depending on the specific oscillator design and component tolerances. Circuit validation is required when substituting between these parts.