7B-13.560MAAJ-T

Crystals Overview

The TXC CORPORATION 7B-13.560MAAJ-T is a surface-mount quartz crystal resonator operating at a nominal frequency of 13.56 MHz. It features a load capacitance of 18 pF and a frequency stability of ±30 ppm. The component utilizes a 4-SMD, no-lead package with dimensions of 5.00 mm x 3.20 mm and a maximum height of 1.05 mm. It operates in the fundamental mode with an equivalent series resistance (ESR) of 40 Ohms. The device supports a working temperature range of -20°C to +70°C and complies with RoHS3 standards.

Crystals Feature Summary

• Compact 5.00mm x 3.20mm surface-mount footprint designed for space-constrained PCB layouts.
• Optimized electromagnetic interference (EMI) characteristics suitable for wireless communication applications.
• Fundamental mode operation with low drive level requirements for efficient power consumption.

Crystals Applications

• Bluetooth portable devices
• Near Field Communication (NFC) systems
• Wireless communication equipment

Crystals Procurement Notes

This component is officially discontinued and no longer manufactured by TXC Corporation. Procurement must focus on identifying verified replacement part numbers from the same manufacturer or compatible alternatives. Verify that substitute components match the required electrical parameters, specifically the 13.56 MHz frequency, 18 pF load capacitance, and 4-SMD package dimensions, to ensure seamless integration into existing designs without re-qualification.

Crystals Selection Notes

Engineers should prioritize the 7M-13.560MAAJ-T as the direct successor within the TXC lineup, maintaining similar specifications. When evaluating alternatives, confirm that the replacement supports the specific 13.56 MHz RFID/NFC band and meets the ±30 ppm stability requirement across the -20°C to +70°C temperature range. Ensure the physical footprint matches the 5x3.2mm SMD form factor to avoid board layout modifications.

Crystals Part Context

The 7B series represents TXC's line of small-sized, lead-free surface-mount crystals. This specific model targets high-frequency applications requiring stable timing references in compact consumer electronics. The 7B designation indicates a specific package style and performance tier within the broader quartz crystal portfolio, emphasizing reliability and EMI performance for modern wireless protocols.

Crystals Replacement Considerations

The official confirmed substitute is the 7M-13.560MAAJ-T from TXC Corporation. Both parts share the 13.56 MHz frequency, 18 pF load capacitance, and 4-SMD package type. Verify that the 7M series maintains the same ESR and stability metrics before finalizing the transition.

Crystals FAQ

What is the current manufacturing status of the 7B-13.560MAAJ-T?

The component is obsolete and has been discontinued by the manufacturer.

Does this crystal support fundamental mode operation?

Yes, the datasheet specifies that the 7B-13.560MAAJ-T operates in the fundamental mode.