9B-11.0592MAAJ-B Crystal Equivalent & Substitute Parts

Part Overview

The 9B-11.0592MAAJ-B is a through-hole MHz crystal manufactured by TXC CORPORATION, operating at 11.0592 MHz with ±30ppm frequency stability. This component is classified as obsolete product status. The part is housed in an HC-49/US package and complies with ROHS3 and REACH regulations. Due to its obsolete status, identifying equivalent substitute parts with matching electrical and mechanical specifications is necessary for design continuity and procurement planning.

Substiute Parts

9B-11.0592MAAJ-B

TXC CORPORATIONIn Stock: 9009B-11.0592MAAJ-B Datasheet

Current PartRFQ

HC49US-FF3F18-11.0592MHZ

ILSIIn Stock: 1070HC49US-FF3F18-11.0592MHZ Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 9B-11.0592MAAJ-B crystal is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Frequency: 11.0592 MHz (exact match required)
• Frequency Stability: ±30ppm (exact match required)
• Load Capacitance: 18pF (exact match required)
• Operating Mode: Fundamental (exact match required)
• Package / Case: HC-49/US (exact match required)
• Mounting Type: Through Hole (exact match required)
• Operating Temperature Range: -20°C ~ 70°C (minimum coverage required)

Allowable Variation Parameters:

• ESR (Equivalent Series Resistance): Variation permitted within circuit design tolerance
• Physical dimensions: Minor variations acceptable within HC-49/US package specification
• Compliance certifications: ROHS3 and REACH status acceptable if equivalent or superior

The substitute part HC49US-FF3F18-11.0592MHZ meets all mandatory matching parameters and is therefore classified as an equivalent substitute.

Parameter Comparison

Engineering Selection Recommendations

The HC49US-FF3F18-11.0592MHZ manufactured by ILSI is a direct equivalent substitute for the obsolete 9B-11.0592MAAJ-B. Selection is based on the following engineering criteria:

Electrical Equivalence: All critical electrical parameters match exactly, including frequency, frequency stability, load capacitance, and operating mode. The ESR variation (40 Ohms vs. 60 Ohms) falls within acceptable tolerance for HC-49/US crystal applications and does not preclude substitution.

Mechanical Compatibility: Both parts conform to the HC-49/US package standard. Physical dimensions are within package specification tolerances, ensuring PCB footprint compatibility and mechanical fit.

Regulatory Compliance: The substitute part maintains ROHS3 compliance and is not affected by REACH restrictions, meeting the same environmental and regulatory requirements as the original part.

Product Status Advantage: The substitute part is classified as active product status, ensuring long-term availability and supply chain continuity compared to the obsolete original part.

Frequently Asked Questions (FAQ)

Q: Can the HC49US-FF3F18-11.0592MHZ be used as a direct replacement for the 9B-11.0592MAAJ-B?

A: Yes. The substitute part meets all mandatory electrical and mechanical specifications. Both parts operate at 11.0592 MHz with ±30ppm stability, 18pF load capacitance, fundamental mode operation, and HC-49/US package configuration. The parts are electrically and mechanically interchangeable.

Q: What is the significance of the ESR difference (40 Ohms vs. 60 Ohms)?

A: ESR variation between the parts is within acceptable tolerance for crystal oscillator circuit design. The 20-Ohm difference does not affect frequency accuracy or stability performance. Circuit designers should verify ESR compatibility with their specific oscillator circuit design if ESR-sensitive applications are involved.

Q: Are the physical dimension differences between the two parts significant?

A: No. Both parts conform to the HC-49/US package standard. The dimensional variations (11.50mm vs. 11.10mm length; 5.00mm vs. 4.70mm width; 3.68mm vs. 3.50mm height) are within HC-49/US specification tolerances and do not affect PCB footprint compatibility or mechanical fit.

Q: Why is the substitute part preferred despite the ESR difference?

A: The substitute part is classified as active product status, ensuring ongoing availability and supply chain support. The original part is obsolete, creating procurement risk and potential supply discontinuation. The ESR difference is within acceptable engineering tolerance for this application category.

Q: Do both parts meet the same regulatory requirements?

A: Yes. Both parts are ROHS3 compliant. The substitute part is REACH unaffected, while the original part is REACH affected. Both meet the regulatory requirements for this component category.

Q: Is there any performance difference between the two crystals?

A: No performance difference exists in frequency, stability, or operating characteristics. Both parts deliver identical frequency output (11.0592 MHz) with identical stability (±30ppm) across the operating temperature range (-20°C ~ 70°C).