The DSC1001BE5-044.0000T is a 44 MHz MEMS-based oscillator (XO) with CMOS output, qualified to AEC-Q100 — this is the automotive-grade reliability that keeps a CAN transceiver or an Ethernet PHY clocked across -20°C to +70°C ambient without the quartz cold-start drift that catches quartz oscillators below 0°C. Frequency stability is ±10 ppm over the operating range — tight enough for 100BASE-T1 or CAN FD bit-timing budgets where a ±25 ppm quartz part would eat into the jitter margin at the receiver. Supply voltage spans 1.8V to 3.3V, so the same order code serves a 1.8V MCU core clock and a 3.3V peripheral bus without a second oscillator variant on the BOM.
DSC1001BE5-044.0000T MEMS Oscillator – 44 MHz, AEC-Q100
MPNDSC1001BE5-044.0000T
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Microchip Technology DSC1001BE5-044.0000T, 44 MHz XO (Standard), CMOS output, MEMS base resonator, AEC-Q100 rated, ±10 ppm stability, 1.8V–3.3V supply, 4-SMD no-lead package.
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026
Specifications
| Parameter | Value |
|---|---|
| Type | XO (Standard) |
| Series | DSC1001 |
| Mounting | Surface Mount |
| Supply voltage | 1.8V ~ 3.3V |
| Current - supply | 7.2mA |
| Current - supply (Disable) | 15µA |
| Frequency | 44 MHz |
| Frequency stability | ±10ppm |
| Operating temperature | -20°C~70°C |
| Size (Dimension) | 0.197\" L x 0.126\" W (5.00mm x 3.20mm) |
| Height - seated | 0.035\" (0.90mm) |
| Output | CMOS |
| Package | Tape & Reel (TR) |
| Ratings | AEC-Q100 |
| Function | Standby (Power Down) |
| Base resonator | MEMS |
| Case | 4-SMD, No Lead |
Product details
Frequently asked questions
Is the DSC1001BE5-044.0000T AEC-Q100 qualified?
Yes — the DSC1001BE5-044.0000T carries AEC-Q100 ratings, making it suitable for automotive applications such as engine control, body electronics, and infotainment modules where the temperature range and reliability stress requirements are specified.
What is the standby function on the DSC1001 series?
The standby (power-down) function disables the oscillator output and reduces supply current to 15 µA max. It is controlled by a dedicated pin on the 4-SMD package, allowing the system to gate the clock during low-power sleep modes without removing the supply rail.