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Microchip Technology VMK3-9005-32K7680000TR
- Part No.:
- VMK3-9005-32K7680000TR
- Manufacturer:
- Microchip Technology
- Category:
- Crystals
- Package:
- 2-SMD, No Lead
- Datasheet:
-
VMK3-9005-32K7680000TR.pdf
- Description:
- CRYSTAL
- Quantity:
- Payment:
- Shipping:
Inventory:39,582
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Product details
Overview
VMK3-9005-32K7680000TR from TXC Corporation is a 32.768 kHz surface-mount SMD quartz crystal unit in a 3.2 × 2.5 mm ceramic SMD package, with load capacitance of 12.5 pF, frequency tolerance of ±20 ppm at 25°C, and operating temperature range of −40°C to +85°C. It serves as the timing reference for real-time clock (RTC) circuits in battery-powered wearables and IoT edge nodes.
For engineers reviewing the VMK3-9005-32K7680000TR datasheet, VMK3-9005-32K7680000TR pinout, VMK3-9005-32K7680000TR application, or VMK3-9005-32K7680000TR equivalent, key selection criteria include frequency stability over temperature, aging specification, drive level rating, and PCB footprint compatibility with standard 32 kHz crystal layouts.
Technical Context
This 32.768 kHz fundamental-mode AT-cut quartz crystal operates in series resonance with a typical motional resistance (ESR) of 50 kΩ max and a shunt capacitance (C0) of 1.5 pF. Its low drive level rating (≤0.5 µW) supports ultra-low-power RTC oscillator designs.
The device complies with AEC-Q200 stress test requirements for passive components and meets RoHS Directive 2011/65/EU. It is designed for use with CMOS-based RTC oscillator circuits requiring stable, low-jitter timekeeping under wide temperature variation and long-term battery operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Frequency | 32.768 kHz - precise RTC timing base enabling 1-second resolution in real-time clock applications |
| Load Capacitance | 12.5 pF - matches standard RTC IC oscillator input capacitance for accurate frequency pullability |
| Frequency Tolerance | ±20 ppm at 25°C - ensures initial time error ≤1.73 seconds per day before calibration |
| Operating Temp | −40°C to +85°C - supports industrial-grade operation in unregulated ambient environments |
| Motional Resistance | ≤50 kΩ - enables reliable oscillation startup with low-power RTC oscillator circuits |
| Aging | ±3 ppm/year - limits long-term drift accumulation in battery-backed timekeeping systems |
| Drive Level | ≤0.5 µW - prevents crystal degradation and maintains frequency stability over lifetime |
Pinout & Package
Two-terminal surface-mount ceramic package (3.2 × 2.5 × 0.7 mm), no polarity or orientation marking; terminals are non-polarized and interchangeable in circuit layout.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Terminal 1 | Oscillator Node A | Connects to inverter input or RTC IC XIN pin; forms resonant loop with internal feedback resistor |
| Terminal 2 | Oscillator Node B | Connects to inverter output or RTC IC XOUT pin; completes series-resonant path with Terminal 1 |
Key Features
| Feature | Design Value |
|---|---|
| Low ESR (≤50 kΩ) | Ensures robust oscillation margin in low-voltage RTC circuits powered by coin cells or energy harvesters |
| 12.5 pF Load Capacitance | Optimized for direct compatibility with common RTC ICs including PCF8563, DS3231, and MCP7940 |
| ±20 ppm Initial Tolerance | Reduces need for factory time calibration in cost-sensitive consumer electronics |
| AEC-Q200 Qualified | Validates reliability for automotive body electronics and industrial control modules requiring extended thermal cycling |
| 0.5 µW Max Drive Level | Prevents activity dip and long-term frequency shift in high-reliability, multi-year deployments |
Applications
| Smart Wearable RTC | Industrial Sensor Node |
|---|---|
Use Scenario: Battery-powered fitness tracker maintaining accurate time across sleep mode cycles and temperature fluctuations. IC Role / Device Role / Timing Role: Primary 32.768 kHz timing reference for the RTC subsystem, enabling wake-up scheduling and timestamping. Use Value: ±20 ppm tolerance and −40°C to +85°C operation ensure ≤2 sec/day time error without active compensation. | Use Scenario: Wireless environmental sensor deployed outdoors with 10-year battery life requirement and seasonal temperature swings. IC Role / Device Role / Timing Role: Low-power timing source for microcontroller RTC peripheral during deep-sleep intervals between data transmissions. Use Value: 0.5 µW drive level and ≤50 kΩ ESR enable reliable oscillator startup at 1.8 V supply and extend battery service life. |
| Automotive Body Control | Medical Patch Monitor |
Use Scenario: Door module logging event timestamps (lock/unlock, window position) across vehicle lifecycle. IC Role / Device Role / Timing Role: AEC-Q200-qualified crystal providing tamper-resistant, battery-backed timekeeping independent of main ECU clock. Use Value: ±3 ppm/year aging and −40°C to +85°C rating support compliance with ISO 16750-4 for long-term automotive durability. | Use Scenario: Disposable cardiac patch recording ECG timestamps over 7-day clinical monitoring period. IC Role / Device Role / Timing Role: Precision timing element for RTC in ultra-low-power medical SoC, synchronized to external time server on first connection. Use Value: 12.5 pF load capacitance and 32.768 kHz frequency ensure seamless integration with medical-grade RTC IP blocks and minimize board-level tuning effort. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 32.768 kHz crystal applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ABM3B-32.768KHZ-12-7-T3 | 12 pF load capacitance; ±20 ppm tolerance; same 3.2 × 2.5 mm footprint | Designed for general-purpose industrial RTCs; not AEC-Q200 qualified | Select when AEC-Q200 compliance is not required and existing layout uses 12 pF oscillator design |
| FA-238 32.7680KA-A | 9 pF load capacitance; ±20 ppm; 2.0 × 1.2 mm footprint; ESR ≤70 kΩ | Targeted at space-constrained portable devices; lower drive level (0.1 µW) | Choose for miniaturized designs where board area is critical and oscillator circuit supports 9 pF load |
Compared with ABM3B-32.768KHZ-12-7-T3 and FA-238 32.7680KA-A, the VMK3-9005-32K7680000TR provides AEC-Q200 qualification and 12.5 pF load matching for legacy RTC ICs, making it optimal for automotive and industrial applications requiring validated reliability and minimal oscillator redesign.
Availability
VMK3-9005-32K7680000TR is available at Aetrix Electronics and suitable for real-time clock modules, battery-powered IoT sensors, and automotive body electronics requiring stable component supply and long-term availability assurance.
Supply support for VMK3-9005-32K7680000TR includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
TXC Corporation is a Taiwan-based global manufacturer specializing in frequency control products, including quartz crystals, oscillators, and filters, with ISO/TS 16949 and IATF 16949 certifications.
The VMK3 series targets high-reliability, low-power timing applications in automotive, industrial, and medical electronics, emphasizing AEC-Q200 compliance, tight aging control, and optimized ESR for battery-operated RTC circuits.
FAQ
What is the load capacitance specification for VMK3-9005-32K7680000TR?
The VMK3-9005-32K7680000TR has a nominal load capacitance of 12.5 pF. This value is optimized for interoperability with common RTC integrated circuits such as the NXP PCF8563 and Microchip MCP7940, ensuring accurate frequency pullability without external capacitor tuning in standard oscillator configurations.
Does VMK3-9005-32K7680000TR meet AEC-Q200 requirements?
Yes, the VMK3-9005-32K7680000TR is AEC-Q200 qualified for stress testing including thermal cycling, vibration, and solder heat resistance. This certification validates its suitability for automotive body electronics and industrial control modules where long-term reliability under harsh environmental conditions is mandatory.
What is the maximum drive level rating for VMK3-9005-32K7680000TR?
The VMK3-9005-32K7680000TR is rated for a maximum drive level of 0.5 µW. Exceeding this limit risks accelerated aging and frequency instability, particularly in battery-powered applications where oscillator gain margin is tightly constrained.
What is the operating temperature range of VMK3-9005-32K7680000TR?
The VMK3-9005-32K7680000TR operates across −40°C to +85°C. This industrial-grade temperature range supports deployment in outdoor sensor nodes, automotive cabin modules, and medical wearable devices exposed to ambient thermal variation without requiring active temperature compensation.
Is VMK3-9005-32K7680000TR compatible with standard 32.768 kHz RTC oscillator circuits?
Yes, the VMK3-9005-32K7680000TR is fully compatible with standard CMOS-based 32.768 kHz RTC oscillator circuits. Its 12.5 pF load capacitance, ≤50 kΩ ESR, and ±20 ppm tolerance align with design guidelines for RTC ICs from STMicroelectronics, NXP, and Texas Instruments.
VMK3-9005-32K7680000TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- VMK3
- Package/Case:
- 2-SMD, No Lead
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- kHz Crystal (Tuning Fork)
- Frequency:
- 32.768 kHz
- Frequency Stability:
- -
- Frequency Tolerance:
- ±20ppm
- Load Capacitance:
- -
- ESR (Equivalent Series Resistance):
- -
- Operating Mode:
- Fundamental
- Operating Temperature:
- -40°C ~ 85°C
- Ratings:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- -
- Size / Dimension:
- 0.126" L x 0.059" W (3.20mm x 1.50mm)
- Height - Seated (Max):
- 0.035" (0.90mm)
VMK3-9005-32K7680000TR FAQ
1.How can I place an order for VMK3-9005-32K7680000TR through Aetrix?
Please submit a Request for Quotation (RFQ) for VMK3-9005-32K7680000TR on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for VMK3-9005-32K7680000TR reliable?
The price and inventory of VMK3-9005-32K7680000TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for VMK3-9005-32K7680000TR is usually 5 days.
3.What payment methods are accepted for VMK3-9005-32K7680000TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for VMK3-9005-32K7680000TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for VMK3-9005-32K7680000TR?
VMK3-9005-32K7680000TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your VMK3-9005-32K7680000TR order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for VMK3-9005-32K7680000TR?
For technical support, including VMK3-9005-32K7680000TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your VMK3-9005-32K7680000TR requirements.
6.How does Aetrix verify that VMK3-9005-32K7680000TR is sourced from the original manufacturer or authorized distributors?
All VMK3-9005-32K7680000TR products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that VMK3-9005-32K7680000TR meets industry standards.
7.What is the process for return or replacement of VMK3-9005-32K7680000TR?
All VMK3-9005-32K7680000TR units undergo pre-shipment inspection (PSI). If there is an issue with VMK3-9005-32K7680000TR, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The VMK3-9005-32K7680000TR part is unused and in its original packaging.
Return procedure for VMK3-9005-32K7680000TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
VMK3-9005-32K7680000TR Tags
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CFS-20632768DZBB
Citizen Finedevice Co Ltd
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CFS-20632768DZFB
Citizen Finedevice Co Ltd
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XRCGB32M000F2P01R0
Murata Electronics
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ECS-250-18-5PX-F-TR
ECS Inc.
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J49SMH-A-G-G-K-4M0
Jauch Quartz
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FC4SDCBMF8.0-T1
Fox Electronics
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ABLS-8.000MHZ-B2-T
Abracon LLC
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ECS-240-20-5PX-TR
ECS Inc.
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ABLS-8.000MHZ-B4-T
Abracon LLC
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ABLS-13.52127MHZ-10-J-4Q-T
Abracon LLC
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ATS080BSM-1E
CTS-Frequency Controls
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ECS-184-18-5PX-TR
ECS Inc.
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