AT-9.815630MAHQ-T

Crystals Overview

The AT-9.815630MAHQ-T is a MHz crystal manufactured by TXC Corporation, designed for surface mount applications. It operates at a nominal frequency of 9.81563 MHz with a load capacitance of 10 pF and a frequency stability tolerance of ±30 ppm. The component utilizes a fundamental oscillation mode and features an equivalent series resistance (ESR) of 60 ohms. It is housed in a compact 4-SMD, no-lead package with dimensions of 3.20 mm x 2.50 mm and a maximum height of 0.90 mm. The device supports an operating temperature range from -40°C to +85°C and is currently classified as obsolete.

Crystals Feature Summary

• Surface mount design utilizing a 4-SMD, no-lead package configuration
• Fundamental oscillation mode operation for stable frequency generation
• Wide industrial temperature rating supporting environments from -40°C to +85°C

Crystals Applications

• General purpose clock signal generation in electronic circuits
• Timing reference sources for microcontroller systems
• Communication interface synchronization modules

Crystals Procurement Notes

This component is officially listed as obsolete by the manufacturer. Procurement should focus on verifying the authenticity of remaining stock from authorized distributors or secondary market suppliers. Buyers must confirm the physical condition and solderability of available units, as lead times are not applicable for discontinued items. Ensure that any replacement strategy accounts for the lack of future production availability.

Crystals Selection Notes

Engineers selecting this part should consider its obsolete status when designing new products. While the 3.2mm x 2.5mm footprint and 10pF load capacitance are common, the specific 9.81563 MHz frequency requires precise matching with the host circuit's oscillator requirements. Alternative solutions within the same package size may need evaluation if long-term supply continuity is a critical design constraint.

Crystals Part Context

The AT-9.815630MAHQ-T belongs to the broader category of MHz crystals produced by TXC Corporation. It shares the standard 4-SMD no-lead form factor found in many surface mount timing components. Unlike active oscillators, this passive device requires an external oscillator circuit to function, providing a fundamental frequency reference based on the mechanical resonance of its internal quartz element.

Crystals Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation due to the component's obsolete status.