7B-10.000MBBK-T Equivalent & Substitute Parts

Part Overview

The 7B-10.000MBBK-T is a 10 MHz fundamental mode crystal oscillator manufactured by TXC CORPORATION, designed for surface mount applications in 4-SMD, No Lead packaging. This component operates at 10 MHz with ±50ppm frequency stability and 20pF load capacitance. The part is classified as obsolete, necessitating identification of active equivalent alternatives that maintain identical electrical and mechanical specifications for continued system support and new design implementations.

Substiute Parts

7B-10.000MBBK-T

TXC CORPORATIONIn Stock: 8937B-10.000MBBK-T Datasheet

Current PartRFQ

7M-10.000MBBK-T

TXC CORPORATIONIn Stock: 11237M-10.000MBBK-T Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the obsolete 7B-10.000MBBK-T is determined by strict equivalence across the following critical parameters:

Electrical Equivalence Criteria:

• Frequency: 10 MHz (exact match required)
• Frequency Stability: ±50ppm (exact match required)
• Load Capacitance: 20pF (exact match required)
• ESR: 100 Ohms (exact match required)
• Operating Mode: Fundamental (exact match required)

Mechanical & Environmental Equivalence Criteria:

• Mounting Type: Surface Mount (exact match required)
• Package / Case: 4-SMD, No Lead (exact match required)
• Operating Temperature Range: -20°C ~ 70°C (exact match required)
• RoHS Compliance: Required
• MSL Rating: 1 (Unlimited) (exact match required)

The 7M-10.000MBBK-T satisfies all electrical and environmental criteria. Physical dimensions differ within the same package classification, representing a design evolution within the same product family while maintaining full functional compatibility.

Parameter Comparison

Engineering Selection Recommendations

The 7M-10.000MBBK-T is the direct functional equivalent for the obsolete 7B-10.000MBBK-T. Both components are manufactured by TXC CORPORATION and maintain identical electrical specifications across all critical parameters: 10 MHz frequency, ±50ppm stability, 20pF load capacitance, and 100 Ohms ESR.

Compliance Status: Both parts are RoHS Compliant with MSL Rating 1 (Unlimited), ensuring compatibility with modern manufacturing and environmental standards.

Physical Considerations: The 7M series represents a miniaturized design variant. The 7M-10.000MBBK-T occupies a smaller footprint (3.20mm x 2.50mm versus 5.00mm x 3.20mm) and lower profile (0.80mm versus 1.05mm maximum seated height). This dimensional reduction is compatible with contemporary PCB layout requirements and does not affect electrical performance.

Availability: The 7M-10.000MBBK-T is currently in active production status with confirmed inventory availability, whereas the 7B series is obsolete. Selection of the 7M variant ensures long-term supply chain continuity and component availability for production and field replacement applications.

Frequently Asked Questions (FAQ)

Q: Can the 7M-10.000MBBK-T directly replace the 7B-10.000MBBK-T in existing designs?

A: Yes. Both components share identical electrical specifications (frequency, stability, load capacitance, ESR, and operating mode) and environmental ratings. The 7M variant is electrically and functionally equivalent. PCB layout modifications may be required due to smaller physical dimensions, but no circuit redesign is necessary.

Q: What are the physical differences between these two parts?

A: The 7M-10.000MBBK-T is a miniaturized variant with reduced footprint and height. The 7M measures 3.20mm x 2.50mm with 0.80mm maximum height, compared to the 7B at 5.00mm x 3.20mm with 1.05mm maximum height. Both use identical 4-SMD, No Lead packaging.

Q: Are there any electrical performance differences?

A: No. Both parts operate at 10 MHz with ±50ppm frequency stability, 20pF load capacitance, and 100 Ohms ESR. Operating temperature range, operating mode, and all electrical characteristics are identical.

Q: Why is the 7B-10.000MBBK-T classified as obsolete?

A: The 7B series has been superseded by the 7M series within TXC CORPORATION's product portfolio. The 7M represents an improved design with reduced physical dimensions while maintaining full electrical equivalence. Obsolescence reflects product line consolidation and the transition to more compact component designs.

Q: What compliance certifications apply to both parts?

A: Both the 7B-10.000MBBK-T and 7M-10.000MBBK-T are RoHS Compliant with MSL Rating 1 (Unlimited). Both carry ECCN EAR99 and HTSUS 8541.60.0050 classifications.

Q: Is PCB redesign required to use the 7M-10.000MBBK-T as a replacement?

A: PCB layout modifications are necessary due to the smaller footprint of the 7M variant. However, no circuit redesign or electrical modifications are required. The component footprint and placement coordinates must be updated to accommodate the reduced dimensions.

Q: What is the current availability status of these parts?

A: The 7B-10.000MBBK-T is obsolete with limited remaining inventory. The 7M-10.000MBBK-T is in active production with confirmed availability, making it the recommended selection for new designs and ongoing production requirements.