ECS-.327-7-12-TR ECS Crystal or Oscillator (Other) In Stock
ECS ECS-.327-7-12-TR is a 32.768 kHz SMD 2-pin parallel-fundamental crystal with 7 pF load capacitance, 20 ppm frequency tolerance, and 0.5 µW drive level for ultra-low-power RTC applications. In stock with worldwide shipping.
- Manufacturer
- ECS
- Package
- Other
- Pin Count
- 2
- Lifecycle
- ACTIVE
- Datasheet
- ECS-.327-7-12-TR Datasheet PDF
- Category
- Crystal or Oscillator
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 32.768 kHz fundamental frequency with 7 pF load capacitance optimized for low-power RTC oscillator circuits
- Ultra-low drive level of 0.5 µW enables use in battery-powered devices with strict power budgets
- Frequency tolerance of 20 ppm and aging of 3 ppm/first year ensure long-term timekeeping accuracy
- SMD 2-pin tape-and-reel (TR) packaging supports automated high-volume PCB assembly
Applications
The ECS-.327-7-12-TR is primarily used in real-time clock (RTC) circuits of microcontrollers and SoCs in IoT sensors, wearable devices, and low-power embedded systems where a stable 32.768 kHz reference is required. Its 0.5 µW drive level and 20 ppm frequency tolerance make it well suited for battery-operated consumer electronics, smart meters, and medical monitoring devices that demand precision timekeeping over extended battery life. The tape-and-reel packaging enables seamless integration into automated SMT production lines for high-volume manufacturing.
Specifications
| Factory Lead Time | 16Weeks |
| YTEOL | 7 |
| Additional Feature | TR |
| Aging | 3 PPM/FIRST YEAR |
| Crystal/Resonator Type | PARALLEL - FUNDAMENTAL |
| Drive Level | 0.5 µW |
| Frequency Stability | 0.0144% |
| Frequency Tolerance | 20ppm |
| JESD-609 Code | e4 |
| Load Capacitance | 7pF |
| Mounting Feature | SURFACE MOUNT |
| Operating Frequency-Nom | 0.032768MHz |
| Physical Dimension | L2.0XB1.2XH0.6 (mm)/L0.079XB0.047XH0.024 (inch) |
| Series Resistance | 90000Ω |
| Surface Mount | YES |
| Terminal Finish | Gold (Au) |
| Package | Other |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| HTS Code | 8541.60.00.10 |
| Country of Origin | Taiwan |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What load capacitance and drive level does the ECS-.327-7-12-TR require for correct oscillator operation?
The ECS-.327-7-12-TR requires a 7 pF load capacitance and operates at a drive level of 0.5 µW, which makes it compatible with the oscillator inputs of most modern low-power microcontrollers and RTC ICs designed for 32.768 kHz crystals.
How accurate is the ECS-.327-7-12-TR for real-time clock designs that must stay synchronized over one year?
The crystal provides a frequency tolerance of 20 ppm and an aging specification of 3 ppm per first year, so a timekeeping circuit can expect less than 1 second of drift per day under nominal 25°C conditions, suitable for consumer RTC and IoT applications.
Which low-power embedded platforms benefit from the ECS-.327-7-12-TR's 32.768 kHz frequency?
Microcontroller platforms such as STM32, nRF52, and ESP32 with onboard RTC peripherals benefit from this crystal's 32.768 kHz parallel-fundamental frequency and 7 pF load capacitance, enabling battery-backed timekeeping in IoT nodes, wearables, and smart meters drawing only 0.5 µW from the oscillator circuit.
Is the ECS-.327-7-12-TR available in tape-and-reel format for automated SMT assembly?
Yes, the TR suffix in ECS-.327-7-12-TR designates tape-and-reel packaging, and the 2-pin SMD footprint is compatible with standard pick-and-place equipment, supporting efficient automated reflow assembly for high-volume production runs of RTC boards and IoT sensor modules.
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