9B-8.000MEEJ-B Equivalent & Substitute Parts

Part Overview

The 9B-8.000MEEJ-B is an 8 MHz through-hole crystal oscillator manufactured by TXC CORPORATION, designed for fundamental mode operation with 18pF load capacitance and 80 Ohms equivalent series resistance. This component operates across the -20°C to 70°C temperature range with ±10ppm frequency stability in HC-49/US package configuration.

The 9B-8.000MEEJ-B is classified as obsolete. Equivalent substitute parts are available from active manufacturers including Abracon LLC and ECS Inc., offering identical or compatible electrical and mechanical specifications for direct replacement applications.

Substiute Parts

9B-8.000MEEJ-B

TXC CORPORATIONIn Stock: 18799B-8.000MEEJ-B Datasheet

Current PartRFQ

ABL-8.000MHZ-B1U-T

Abracon LLCIn Stock: 1144ABL-8.000MHZ-B1U-T Datasheet

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ABL-8.000MHZ-B2

Abracon LLCIn Stock: 4913ABL-8.000MHZ-B2 Datasheet

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ABL-8.000MHZ-B4Y-T

Abracon LLCIn Stock: 1812ABL-8.000MHZ-B4Y-T Datasheet

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ECS-80-18-4X-CKM

ECS Inc.In Stock: 1795ECS-80-18-4X-CKM Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 9B-8.000MEEJ-B is determined by the following critical parameters:

Mandatory Matching Parameters:

• Frequency: 8.0000 MHz
• Load Capacitance: 18 pF
• ESR: 80 Ohms
• Operating Mode: Fundamental
• Package / Case: HC-49/US
• Mounting Type: Through Hole
• Operating Temperature Range: -20°C to 70°C

Allowable Variation Parameters:

• Frequency Stability: ±10ppm to ±30ppm (wider tolerance acceptable for non-critical applications)
• Frequency Tolerance: ±10ppm to ±30ppm
• Physical dimensions: Minor variations within HC-49/US standard envelope
• Packaging format: Bulk, Cut Tape, or Tape & Reel
• Manufacturer: TXC CORPORATION, Abracon LLC, or ECS Inc.
• Product Status: Active status preferred for long-term availability

All substitute parts listed maintain identical electrical performance at the core specification level (8 MHz, 18pF, 80 Ohms, HC-49/US) and are compatible with circuits designed for the original 9B-8.000MEEJ-B component.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitutes (Highest Compatibility):

ABL-8.000MHZ-B1U-T and ECS-80-18-4X-CKM are direct electrical equivalents to the 9B-8.000MEEJ-B. Both parts maintain identical frequency stability (±10ppm), load capacitance (18pF), and ESR (80 Ohms). Both manufacturers are active, ensuring long-term component availability and supply chain continuity. These parts are suitable for applications requiring the original ±10ppm specification.

Secondary Substitutes (Relaxed Tolerance Applications):

ABL-8.000MHZ-B2 and ABL-8.000MHZ-B4Y-T provide functional equivalence with wider frequency tolerance specifications (±20ppm and ±30ppm respectively). These parts are appropriate for applications where the circuit design accommodates broader frequency tolerance without performance degradation. Both are manufactured by Abracon LLC with active product status.

Compliance Considerations:

All substitute parts maintain ROHS3 compliance and EAR99 export classification consistent with the original component. The 9B-8.000MEEJ-B is REACH Affected; substitute parts from Abracon LLC and ECS Inc. are REACH Unaffected, providing regulatory advantage in supply chain management.

Packaging and Availability:

The 9B-8.000MEEJ-B is supplied in Bulk packaging. Substitute parts are available in multiple packaging formats (Bulk, Cut Tape, Tape & Reel), allowing selection based on production volume and assembly requirements.

Frequently Asked Questions (FAQ)

Q: Can ABL-8.000MHZ-B2 replace the 9B-8.000MEEJ-B in all applications?

A: ABL-8.000MHZ-B2 is electrically compatible for circuits designed to tolerate ±20ppm frequency tolerance. Applications requiring the original ±10ppm specification should use ABL-8.000MHZ-B1U-T or ECS-80-18-4X-CKM instead.

Q: What is the difference between the Abracon ABL series parts?

A: All ABL series parts share identical frequency (8 MHz), load capacitance (18pF), and ESR (80 Ohms). The primary differences are frequency stability/tolerance ratings: ABL-8.000MHZ-B1U-T (±10ppm), ABL-8.000MHZ-B4Y-T (±30ppm), and ABL-8.000MHZ-B2 (±20ppm tolerance, ±50ppm stability).

Q: Are there physical dimension differences between substitute parts?

A: All parts conform to HC-49/US package standard. Minor dimensional variations exist: the 9B-8.000MEEJ-B has maximum seated height of 0.145" (3.68mm), while Abracon and ECS parts have 0.138" (3.50mm) maximum seated height. These variations remain within HC-49/US specification tolerances and do not affect PCB mounting compatibility.

Q: Which substitute part offers the best long-term availability?

A: ABL-8.000MHZ-B1U-T and ABL-8.000MHZ-B2 from Abracon LLC show highest inventory levels (1052 and 4883 units respectively) with active product status. ECS-80-18-4X-CKM from ECS Inc. also maintains active status with 1767 units in stock.

Q: Does packaging format affect electrical performance?

A: No. Bulk, Cut Tape, and Tape & Reel packaging formats contain identical components. Packaging selection is determined by production volume, assembly equipment compatibility, and inventory management requirements, not electrical specifications.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts (ABL-8.000MHZ-B1U-T, ABL-8.000MHZ-B2, ABL-8.000MHZ-B4Y-T, and ECS-80-18-4X-CKM) are ROHS3 compliant, matching the original 9B-8.000MEEJ-B compliance status.