9C-8.000MAAL-T Equivalent & Substitute Parts

Part Overview

The 9C-8.000MAAL-T is an 8 MHz fundamental mode crystal oscillator manufactured by TXC CORPORATION, designed for surface mount applications in HC-49/US package configuration. This part operates at ±30ppm frequency stability with 22pF load capacitance and 80 Ohms equivalent series resistance across an operating temperature range of -20°C to 70°C. The product is classified as obsolete, necessitating identification of active equivalent alternatives that maintain electrical and mechanical compatibility for ongoing production and maintenance applications.

Key Parameters

Parameter	Value	Unit
Frequency	8.0000	MHz
Frequency Stability	±30	ppm
Load Capacitance	22	pF
ESR (Equivalent Series Resistance)	80	Ohms
Operating Mode	Fundamental	—
Operating Temperature Range	-20 to 70	°C
Package / Case	HC-49/US	—
Mounting Type	Surface Mount	—
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitution eligibility for the 9C-8.000MAAL-T is determined by the following critical parameters:

Mandatory Matching Parameters:

Frequency: 8.0000 MHz
Frequency Stability: ±30ppm
ESR: 80 Ohms
Operating Mode: Fundamental
Operating Temperature Range: -20°C to 70°C
Package / Case: HC-49/US
RoHS Status: ROHS3 Compliant

Allowable Variation Parameters:

Load Capacitance: 22pF (main part) to 18pF (substitute parts) — acceptable within crystal oscillator design margins
Mounting Type: Surface Mount (primary requirement maintained)
Dimensions: Minor variations within HC-49/US package specification tolerance

The substitute parts ABLS2-8.000MHZ-B4Y-T and ABL-8.000MHZ-B4Y-T satisfy all mandatory electrical parameters. The load capacitance reduction from 22pF to 18pF represents a controlled design parameter that does not compromise frequency stability or ESR performance in equivalent circuit applications.

Parameter Comparison

Parameter	9C-8.000MAAL-T (Main)	ABLS2-8.000MHZ-B4Y-T	ABL-8.000MHZ-B4Y-T
Manufacturer	TXC CORPORATION	Abracon LLC	Abracon LLC
Frequency	8.0000 MHz	8.0000 MHz	8.0000 MHz
Frequency Stability	±30ppm	±30ppm	±30ppm
Load Capacitance	22pF	18pF	18pF
ESR	80 Ohms	80 Ohms	80 Ohms
Operating Mode	Fundamental	Fundamental	Fundamental
Operating Temperature	-20°C to 70°C	-20°C to 70°C	-20°C to 70°C
Package / Case	HC-49/US	HC-49/US	HC-49/US
Mounting Type	Surface Mount	Surface Mount	Through Hole
Product Status	Obsolete	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
REACH Status	REACH Affected	REACH Affected	REACH Unaffected

Engineering Selection Recommendations

ABLS2-8.000MHZ-B4Y-T (Primary Substitute)

This part is the optimal direct replacement for the 9C-8.000MAAL-T. Both components share identical mounting type (surface mount), package configuration (HC-49/US), and all critical electrical parameters (frequency, stability, ESR, operating temperature). The ABLS2-8.000MHZ-B4Y-T maintains active product status with ROHS3 compliance and REACH affected designation matching the original part. The 4pF load capacitance reduction is within acceptable design tolerance for crystal oscillator circuits.

ABL-8.000MHZ-B4Y-T (Secondary Substitute)

This part satisfies all electrical requirements but differs in mounting type (through hole versus surface mount). Selection of this substitute requires PCB redesign to accommodate through-hole mounting. The part maintains active status, ROHS3 compliance, and REACH unaffected certification. This option is suitable only when PCB layout modifications are feasible.

Selection Criteria:

For direct PCB compatibility without layout modification: select ABLS2-8.000MHZ-B4Y-T
For applications permitting through-hole mounting redesign: ABL-8.000MHZ-B4Y-T is acceptable
Both substitutes provide superior inventory availability (924 and 1714 units respectively) compared to the obsolete main part (1120 units)

Frequently Asked Questions (FAQ)

Q: Can the 9C-8.000MAAL-T be directly replaced with ABLS2-8.000MHZ-B4Y-T without circuit modification?

A: Yes. Both parts operate at 8.0000 MHz with ±30ppm stability, 80 Ohms ESR, and identical HC-49/US surface mount package configuration. The 4pF load capacitance difference (22pF to 18pF) is accommodated within standard crystal oscillator circuit design margins.

Q: What is the significance of the load capacitance difference between the main part and substitutes?

A: Load capacitance determines the frequency-pulling range in crystal oscillator circuits. The reduction from 22pF to 18pF represents a controlled parameter variation. Circuit designers must verify that the substitute part's load capacitance is compatible with existing oscillator tank circuit capacitance values to maintain frequency accuracy within ±30ppm specification.

Q: Why is ABL-8.000MHZ-B4Y-T listed as a substitute if it uses through-hole mounting?

A: ABL-8.000MHZ-B4Y-T satisfies all electrical and environmental specifications. However, its through-hole package requires PCB redesign. This part is suitable for applications where mounting type modification is acceptable or where legacy through-hole designs are being maintained.

Q: Are there compliance differences between the substitute parts?

A: ABLS2-8.000MHZ-B4Y-T maintains REACH affected status identical to the original part. ABL-8.000MHZ-B4Y-T is REACH unaffected. Both parts are ROHS3 compliant. Selection between these substitutes may depend on supply chain compliance requirements specific to the end application.

Q: What inventory considerations apply to these substitutes?

A: The original 9C-8.000MAAL-T has 1120 units in stock. ABLS2-8.000MHZ-B4Y-T provides 924 units, and ABL-8.000MHZ-B4Y-T provides 1714 units. For production planning, the ABL variant offers the highest inventory availability.

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