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Microchip Technology DSC1033BI1-020.0000 — Crystals & Oscillators

DSC1033BI1-020.0000 MEMS XO 20 MHz CMOS ±50ppm -40~85°C

MPNDSC1033BI1-020.0000
Active

Microchip DSC1033 PureSilicon™ series, XO (Standard) MEMS oscillator, 20 MHz CMOS output, ±50ppm stability, 3.3V supply, -40°C~85°C, 4-SMD no-lead package, standby (power down) function.

Microchip Technology DSC1033BI1-020.0000 datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

DSC1033BI1-020.0000 specifications
ParameterValue
TypeXO (Standard)
SeriesDSC1033, PureSilicon™
MountingSurface Mount
Voltage3.3V
Current - supply3mA (Typ)
Current - supply (Disable)1µA
Frequency20 MHz
Frequency stability±50ppm
Operating temperature-40°C~85°C
Size (Dimension)0.197\" L x 0.126\" W (5.00mm x 3.20mm)
Height - seated0.035\" (0.90mm)
OutputCMOS
PackageTube
FunctionStandby (Power Down)
Base resonatorMEMS
Case4-SMD, No Lead

Product details

20 MHz MEMS XO with standby — fit for battery-powered timing

The DSC1033BI1-020.0000 is a 20 MHz MEMS-based XO (Standard) from Microchip's PureSilicon™ series, delivering a CMOS output with ±50ppm frequency stability across -40°C to 85°C. Active lifecycle status means this part is in production and suitable for new designs; no last-time-buy or obsolescence concerns on the horizon.

Standby current and supply — sizing the power budget

Active supply current is 3mA typ (max) at 3.3V — the MEMS resonator consumes less than a quartz equivalent at the same frequency, leaving headroom for other loads on the 3.3V rail. Standby current of 1µA max means the oscillator's own draw is negligible in a system that sleeps most of the time; a coin-cell-backed RTC or wake-up timer sees no meaningful drain from this clock.

Package footprint and layout — 4-SMD no-lead

Housed in a 5.00mm x 3.20mm 4-SMD no-lead package with 0.90mm seated height, this oscillator fits tight-profile assemblies and reflows with standard lead-free profiles.

Frequently asked questions

What is the frequency stability of DSC1033BI1-020.0000?

This covers temperature drift, supply variation, and aging within the datasheet limits.

Can DSC1033BI1-020.0000 replace a crystal oscillator directly?

It is a drop-in replacement for a standard 20 MHz crystal oscillator module with CMOS output and 3.3V supply — same pinout (4-SMD), same function. The MEMS resonator eliminates quartz startup and aging concerns, but confirm the load capacitance and drive strength match your receiver.

What is the standby current of DSC1033BI1?

Standby (power down) supply current is 1µA maximum. When the enable pin is pulled low, the output is disabled and the internal oscillator stops, drawing negligible current.