An oven-controlled crystal oscillator keeps a fixed temperature around the resonator and disciplines out the last ppb of drift. Stratum-3 holdover, GNSS reference, instrumentation — the timebase that stays true when everything else loses lock.
High-stability oscillators step up in three tiers: standard OCXO for industrial timing, double-oven for telecom holdover, and miniature parts where size beats absolute floor performance. TDE stocks each tier across the partner range.
The workhorse high-stability oscillator. An oven holds the crystal at a constant temperature so drift disappears below the ppm floor — for industrial timing, RF instrumentation and any reference that has to stay still.
When the network must hold time after losing GNSS. A second inner oven shields the crystal from the outer oven's residual swing — floor stability into the ppb range, qualified for telecom holdover.
When the board layout can't house a 25×25 mm classic OCXO. Miniature parts trade a little absolute stability for footprint and power — still tighter than any TCXO, in roughly the size of one.
A typical crystal drifts ±50 ppm. A TCXO holds ±1 ppm. An OCXO disciplines that down by another factor of a thousand. Visualised:
An OCXO datasheet runs to dozens of pages — but these six lines drive the design-in, from holdover budget to thermal envelope.
When GNSS or PTP lock drops, the network must keep time inside spec until the link returns. A DOCXO holds Stratum 3E for hours — an OCXO covers Stratum 3 base stations.
A GNSS receiver provides absolute time, but its short-term noise is high. An OCXO smooths the GNSS reference — you get GNSS-level accuracy with oscillator-level cleanliness.
Spectrum analysers, signal generators, radar references — everything that *measures* frequency needs to be tighter than the things it measures. OCXO is the lab-bench floor.
Define how tight it has to hold. Stratum-3E holdover needs DOCXO; instrumentation often runs single-oven OCXO with disciplined GNSS.
An OCXO oven draws watts, especially during warm-up. Budget steady-state and peak, plus the heat the chassis has to dissipate.
For radar and instrumentation, phase-noise mask trumps absolute drift. Confirm a pin-compatible alternative for supply security.
If your timing budget lives at the ppm level, a TCXO is smaller, cheaper and cooler. If absolute precision isn't the goal, a packaged oscillator covers most clocking needs.
XO, TCXO and VC-TCXO — the ppm-class reference for most processor and radio clocks.
The passive resonator — for designs where the oscillator circuit lives on the host PCB.
Have a competitor OCXO? Find the TDE equivalent across all three partners.
Browse OCXO and high-stability parts with pricing and datasheets — or tell us your holdover and phase-noise budget, and we'll recommend the part.
An oven-controlled crystal oscillator keeps a fixed temperature around the resonator and disciplines out the last ppb of drift. Stratum-3 holdover, GNSS reference, instrumentation — the timebase that stays true when everything else loses lock.
High-stability oscillators step up in three tiers: standard OCXO for industrial timing, double-oven for telecom holdover, and miniature parts where size beats absolute floor performance. TDE stocks each tier across the partner range.
The workhorse high-stability oscillator. An oven holds the crystal at a constant temperature so drift disappears below the ppm floor — for industrial timing, RF instrumentation and any reference that has to stay still.
When the network must hold time after losing GNSS. A second inner oven shields the crystal from the outer oven's residual swing — floor stability into the ppb range, qualified for telecom holdover.
When the board layout can't house a 25×25 mm classic OCXO. Miniature parts trade a little absolute stability for footprint and power — still tighter than any TCXO, in roughly the size of one.
A typical crystal drifts ±50 ppm. A TCXO holds ±1 ppm. An OCXO disciplines that down by another factor of a thousand. Visualised:
An OCXO datasheet runs to dozens of pages — but these six lines drive the design-in, from holdover budget to thermal envelope.
When GNSS or PTP lock drops, the network must keep time inside spec until the link returns. A DOCXO holds Stratum 3E for hours — an OCXO covers Stratum 3 base stations.
A GNSS receiver provides absolute time, but its short-term noise is high. An OCXO smooths the GNSS reference — you get GNSS-level accuracy with oscillator-level cleanliness.
Spectrum analysers, signal generators, radar references — everything that *measures* frequency needs to be tighter than the things it measures. OCXO is the lab-bench floor.
Define how tight it has to hold. Stratum-3E holdover needs DOCXO; instrumentation often runs single-oven OCXO with disciplined GNSS.
An OCXO oven draws watts, especially during warm-up. Budget steady-state and peak, plus the heat the chassis has to dissipate.
For radar and instrumentation, phase-noise mask trumps absolute drift. Confirm a pin-compatible alternative for supply security.
If your timing budget lives at the ppm level, a TCXO is smaller, cheaper and cooler. If absolute precision isn't the goal, a packaged oscillator covers most clocking needs.
XO, TCXO and VC-TCXO — the ppm-class reference for most processor and radio clocks.
The passive resonator — for designs where the oscillator circuit lives on the host PCB.
Have a competitor OCXO? Find the TDE equivalent across all three partners.
Browse OCXO and high-stability parts with pricing and datasheets — or tell us your holdover and phase-noise budget, and we'll recommend the part.