ECS-160-20-5PXDN-TR ECS Crystal or Oscillator (Other) In Stock
The ECS-160-20-5PXDN-TR is a 16 MHz surface-mount fundamental mode crystal by ECS, offering 20 pF load capacitance, 30 ppm frequency tolerance, and 5 ppm per year aging stability. It is a 2-pin SMD crystal in a compact package for precision oscillator circuits. Ideal for microcontroller clock sources and communication timing applications.
- Manufacturer
- ECS
- Package
- Other
- Pin Count
- 2
- Lifecycle
- ACTIVE
- Datasheet
- ECS-160-20-5PXDN-TR Datasheet PDF
- Category
- Crystal or Oscillator
- Price
- From $0.2304(MOQ 10)
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 16 MHz fundamental mode parallel resonant crystal with 20 pF load capacitance for precise clock generation
- 30 ppm frequency tolerance ensuring accurate timing across operating temperature and voltage variations
- Low aging rate of 5 ppm per first year maintaining long-term frequency stability in deployed systems
- Low drive level of 500 µW minimizing power consumption and crystal heating in oscillator circuits
- Surface-mount 2-pin SMD package enabling automated PCB assembly and compact layout
Applications
The ECS-160-20-5PXDN-TR provides a precise 16 MHz clock reference for microcontrollers, FPGAs, and UART/SPI communication controllers that require an external crystal oscillator for their internal PLL or oscillator circuitry. It is used in consumer electronics, IoT devices, industrial controllers, and embedded systems requiring accurate timing at low power with a 30 ppm tolerance budget. The tape-and-reel packaging supports high-volume automated PCB assembly for production-scale manufacturing.
Specifications
| Pbfree Code | Yes |
| Factory Lead Time | 8Weeks |
| YTEOL | 6 |
| Aging | 5 PPM/FIRST YEAR |
| Crystal/Resonator Type | PARALLEL - FUNDAMENTAL |
| Drive Level | 500 µW |
| Frequency Stability | 0.01% |
| Frequency Tolerance | 30ppm |
| Load Capacitance | 20pF |
| Mounting Feature | SURFACE MOUNT |
| Operating Frequency-Nom | 16MHz |
| Physical Dimension | 11.4mm x 4.8mm x 4.3mm |
| Series Resistance | 40Ω |
| Surface Mount | YES |
| Terminal Finish | MATTE TIN COPPER OVER NICKEL |
| Package | Other |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| HTS Code | 8541.60.00.50 |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What is the load capacitance and frequency tolerance specification of the ECS-160-20-5PXDN-TR, and how do these affect oscillator design?
The ECS-160-20-5PXDN-TR specifies a 20 pF load capacitance and 30 ppm frequency tolerance. The 20 pF load capacitance value must be matched by the total capacitance presented by the oscillator circuit, including the two load capacitors and PCB stray capacitance, to achieve the nominal 16 MHz frequency. A mismatch in load capacitance shifts the output frequency beyond the 30 ppm tolerance, which can cause communication errors in UART, SPI, or I2C peripherals with tight baud rate accuracy requirements.
How does the 5 ppm per year aging rate of the ECS-160-20-5PXDN-TR affect long-term timing accuracy in deployed IoT devices?
The ECS-160-20-5PXDN-TR has an aging specification of 5 ppm per first year, meaning the crystal frequency drifts by up to 5 Hz per MHz (80 Hz at 16 MHz) over the first year of operation. For a real-time clock or UART interface running at 16 MHz, this results in a timing drift of approximately 0.5 seconds per day that accumulates over the product's lifetime and must be budgeted in the system's frequency error allocation. Battery-powered IoT nodes that need sub-second timekeeping accuracy over multiple years should plan for periodic NTP or GPS-based time synchronization to compensate for crystal aging.
What oscillator circuit topology does the ECS-160-20-5PXDN-TR require, and how should it be driven to avoid overdrive?
The ECS-160-20-5PXDN-TR is a parallel-mode fundamental crystal that is used with a Pierce oscillator inverter circuit, such as the internal oscillator found in most microcontrollers and clock ICs. The maximum drive level is 500 µW, so the oscillator amplifier's output must be limited with a series resistor (typically 22 ohms to 100 ohms) to prevent crystal overdrive, which can cause frequency deviation, excessive aging, or permanent crystal damage. Running the crystal at or below the 500 µW drive level is especially important in high-temperature industrial environments where crystal Q factor degrades.
Which microcontroller or communications IC families are compatible with the ECS-160-20-5PXDN-TR's 16 MHz 20 pF load crystal specification?
The ECS-160-20-5PXDN-TR at 16 MHz with 20 pF load capacitance is directly compatible with many popular microcontroller families including Atmel/Microchip AVR (ATmega328P), STM32 series (with appropriate load cap selection), ESP8266/ESP32 modules, and Nordic nRF52 series that accept an external 16 MHz crystal reference. Many USB Full Speed controllers also require a precise 16 MHz reference, making this crystal a common choice for USB device firmware. Designers should verify the load capacitance tolerance in the MCU datasheet, as values can range from 12 pF to 22 pF depending on the family.
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| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 10+ | $0.3328 | $3.33 |
| 25+ | $0.3109 | $7.77 |
| 100+ | $0.2844 | $28.44 |
| 1000+ | $0.2450 | $245.00 |
| 2000+ | $0.2365 | $473.00 |
| 3000+ | $0.2304 | $691.20 |
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