AS-10.000MAHI-B Equivalent & Substitute Parts

Part Overview

The AS-10.000MAHI-B is a 10 MHz through-hole crystal oscillator manufactured by TXC CORPORATION, designed for fundamental mode operation in applications requiring precise frequency reference. This component features a 16pF load capacitance, 70 Ohms equivalent series resistance, and operates across the -40°C to 85°C temperature range with ±30ppm frequency stability. The part is classified as obsolete, necessitating identification of functionally compatible substitute components for ongoing system support and new design implementations.

Substiute Parts

AS-10.000MAHI-B

TXC CORPORATIONIn Stock: 1070AS-10.000MAHI-B Datasheet

Current PartRFQ

9B-10.000MAAJ-B

TXC CORPORATIONIn Stock: 12959B-10.000MAAJ-B Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the AS-10.000MAHI-B is determined by the following critical parameters:

Mandatory Matching Parameters:

• Frequency: 10.0000 MHz (exact match required)
• Operating Mode: Fundamental
• Package / Case: HC-49/US
• Mounting Type: Through Hole
• Physical Dimensions: 0.453" L x 0.197" W (11.50mm x 5.00mm)

Allowable Variation Parameters:

• Load Capacitance: Substitutes may vary from the 16pF specification
• ESR: Substitutes may vary from the 70 Ohms specification
• Operating Temperature Range: Substitutes may have narrower or equivalent ranges
• Frequency Stability: Must maintain ±30ppm or better
• Compliance Ratings: RoHS and regulatory certifications may differ

The substitute part 9B-10.000MAAJ-B meets all mandatory matching criteria while introducing variations in load capacitance (18pF) and ESR (40 Ohms), which are permissible within crystal oscillator substitution protocols for this frequency class.

Parameter Comparison

Engineering Selection Recommendations

AS-10.000MAHI-B Selection Criteria:

• Applications requiring full -40°C to 85°C temperature range operation
• Systems with existing AEC-Q200 rated component specifications
• Designs where 16pF load capacitance is circuit-critical
• New procurement where obsolete status is not a constraint

9B-10.000MAAJ-B Selection Criteria:

• Applications operating within -20°C to 70°C temperature envelope
• Systems compatible with 18pF load capacitance specifications
• Designs benefiting from lower ESR (40 Ohms vs. 70 Ohms)
• Implementations requiring ROHS3 compliance certification
• Replacement scenarios where AS-10.000MAHI-B inventory is unavailable

Both parts share identical frequency, frequency stability, package form factor, and mounting configuration. The primary differentiation factors are operating temperature range and load capacitance specification. Selection should be based on circuit requirements and environmental operating conditions.

Frequently Asked Questions (FAQ)

Q: Can 9B-10.000MAAJ-B directly replace AS-10.000MAHI-B in all applications?

A: Direct replacement is possible only in applications where the operating temperature range does not exceed -20°C to 70°C and where 18pF load capacitance is compatible with circuit design. The narrower temperature range of the 9B series is the primary limiting factor for universal substitution.

Q: What is the significance of the load capacitance difference (16pF vs. 18pF)?

A: Load capacitance affects the crystal's resonant frequency in the circuit. The 2pF difference between parts requires circuit verification to ensure frequency stability remains within acceptable tolerance. Circuit designers must confirm that the oscillator circuit can accommodate the 18pF specification.

Q: Are both parts pin-compatible?

A: Yes. Both AS-10.000MAHI-B and 9B-10.000MAAJ-B use the HC-49/US package with identical physical dimensions (11.50mm x 5.00mm), ensuring mechanical and electrical pin compatibility for through-hole mounting applications.

Q: What does the lower ESR (40 Ohms) of the 9B-10.000MAAJ-B mean for circuit performance?

A: Lower ESR generally reduces power consumption and improves startup characteristics in oscillator circuits. The 40 Ohms ESR of the 9B series is more favorable than the 70 Ohms of the AS series from an efficiency standpoint.

Q: Are there compliance differences between these parts?

A: The AS-10.000MAHI-B carries AEC-Q200 automotive qualification, while the 9B-10.000MAAJ-B is ROHS3 compliant with REACH affected status. Application requirements determine which compliance profile is necessary.

Q: Can the 9B-10.000MAAJ-B be used in applications requiring the full -40°C to 85°C range?

A: No. The 9B-10.000MAAJ-B is specified only for -20°C to 70°C operation. Use in applications requiring -40°C to 85°C operation would violate component specifications and is not recommended.