TSM21-H50CQ33ST-25.000M

Oscillators Overview

The TSM21-H50CQ33ST-25.000M is a surface-mount crystal oscillator (XO) manufactured by Transko Electronics, Inc. It operates at a nominal frequency of 25.000 MHz with an HCMOS output type. The device requires a 3.3V supply voltage and features a maximum supply current of 3mA. Key specifications include a frequency stability of ±50ppm and an operating temperature range of -40°C to 85°C. The component utilizes a crystal base resonator and includes enable/disable functionality. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0 x 1.6 x 0.9mm.

Oscillators Feature Summary

• Ultra-miniature SMD form factor suitable for space-constrained designs
• HCMOS output interface for standard digital logic compatibility
• Integrated enable/disable control function for power management

Oscillators Applications

• Portable wireless devices requiring low profile oscillators
• Mobile test equipment needing stable clock sources
• Beacon and rescue systems utilizing compact timing components

Oscillators Procurement Notes

Verify the specific suffix codes against the official Transko datasheet to ensure correct voltage, frequency, and package variants. Confirm RoHS compliance status and moisture sensitivity level requirements for your assembly process. Cross-reference the manufacturer part number with authorized distributors to avoid counterfeit components. Ensure the enable/disable pin configuration matches your system design before procurement.

Oscillators Selection Notes

Select this model when a 25MHz HCMOS clock signal is required within a -40°C to 85°C industrial temperature range. The ±50ppm stability suits general digital applications rather than high-precision RF needs. Consider the 3mA current consumption for battery-powered designs. The 2.0x1.6mm footprint allows for dense PCB layouts compared to larger oscillator packages.

Oscillators Part Context

This component belongs to the TSM21 series of ultra-miniature SMD HCMOS oscillators from Transko Electronics. The series offers various frequencies and packages ranging from 2.0x1.6mm to larger sizes. It serves as a drop-in replacement for discontinued Epson Toyocom VG-1201CA models, maintaining fit, form, and function compatibility for existing designs.

Oscillators Replacement Considerations

Transko recommends the TSMV series as a direct drop-in replacement for the discontinued Epson Toyocom VG-1201CA model. Verify that the substitute maintains identical electrical parameters and mechanical dimensions for seamless integration.