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Home Products Crystals, Oscillators, Resonators Oscillators~~ASD1-12.000MHZ-LR-T~~

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ASD1-12.000MHZ-LR-T - Abracon LLC

Name: Abracon LLC ASD1-12.000MHZ-LR-T
Brand: Abracon LLC
SKU: ASD1-12.000MHZ-LR-T
Price: 0.26 USD
Availability: InStock
Rating: 5 (10 reviews)

Manufacturer Part Number: ASD1-12.000MHZ-LR-T

Manufacturer: Abracon

Allelco Part Number: 98D-ASD1-12.000MHZ-LR-T

Warranty: 1 Year Allelco Warranty - Find out more

Stock Status:: 747,786 pcs available, New & Original

Parts Description: XTAL OSC XO 12.0000MHZ HCMOS SMD

Package: 4-SMD, No Lead

Data sheet: ASD1-12.000MHZ-.pdf

Datasheets
Cylindrical Battery Holders.pdf

3D Drawings
ASD.pdf.pdf

Environmental Information
Cylindrical Battery Holders.pdf

RoHs Status: ROHS3 Compliant

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In stock: 747786

Unit Price: $0.71
Subtotal: $0.00

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Quantity	Unit Price	Ext. Price
1+	$0.71	$0.71
200+	$0.275	$55.00
500+	$0.266	$133.00
1000+	$0.26	$260.00

The above prices does not include taxes and freight rates, which will be calculated on the order pages.

Specifications

ASD1-12.000MHZ-LR-T Tech Specifications
Abracon LLC - ASD1-12.000MHZ-LR-T technical specifications, attributes, parameters and parts with similar specifications to Abracon LLC - ASD1-12.000MHZ-LR-T

Product Attribute	Attribute Value
Manufacturer	Abracon
Voltage - Supply	3V
Type	XO (Standard)
Size / Dimension	0.098' L x 0.079' W (2.50mm x 2.00mm)
Series	ASD
Ratings	-
Package / Case	4-SMD, No Lead
Package	Tape & Reel (TR)
Output	HCMOS
Operating Temperature	-40°C ~ 85°C

Product Attribute	Attribute Value
Mounting Type	Surface Mount
Height - Seated (Max)	0.039' (1.00mm)
Function	Enable/Disable
Frequency Stability	±25ppm
Frequency	12 MHz
Current - Supply (Max)	4mA
Current - Supply (Disable) (Max)	20µA
Base Resonator	Crystal
Absolute Pull Range (APR)	-

Environmental & Export Classifications

ATTRIBUTE	DESCRIPTION
RoHs Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	Not Applicable
REACH Status	REACH Unaffected
ECCN	EAR99
HTSUS	8542.39.0001

Frequently Asked Questions(FAQ)

How does the ASD1-12.000MHZ-LR-T oscillator’s frequency stability of ±25ppm compare to alternative oscillators in similar voltage and size classes, particularly when targeting precision timing in industrial sensor applications?: The ASD1-12.000MHZ-LR-T provides a frequency stability of ±25ppm over its operating temperature range of -40°C to 85°C, which is typical for standard HCMOS XOs in compact SMD packages. While this level of stability is sufficient for many embedded control systems and low-frequency communication protocols, it falls short of oven-controlled or TCXO solutions that achieve sub-±1ppm performance. Compared to other 3V, 2.5x2.0mm oscillators such as the Abracon ASFL series, which also offers ±25ppm, the ASD1 model maintains consistent output characteristics without requiring additional calibration. This makes it suitable for applications where moderate timing accuracy is acceptable and cost or power constraints favor standard crystal oscillator topologies.

What design considerations arise when integrating the ASD1-12.000MHZ-LR-T into a microcontroller-based system that requires enable/disable functionality, and how does its disable current impact long-term power efficiency?: The ASD1-12.000MHZ-LR-T supports an active-low enable/disable pin, allowing software control over oscillator operation. When disabled, it draws a maximum of 20µA, which significantly reduces quiescent current compared to continuously running oscillators. For battery-powered devices with duty-cycled operation—such as wireless sensors sampling every few minutes—this feature can extend operational life by reducing average current consumption from 4mA (active) to near-zero during sleep intervals. Designers must ensure proper signal integrity on the EN pin, avoid floating states, and account for propagation delay when toggling the oscillator during state transitions to prevent glitches in clock-sensitive peripherals.

In what scenarios would the ASD1-12.000MHZ-LR-T be preferred over a simple crystal resonator paired with an external CMOS inverter, and what are the key trade-offs in PCB real estate and timing reliability?: The ASD1-12.000MHZ-LR-T integrates load capacitance, drive circuitry, and package matching within a single 4-SMD footprint, eliminating the need for discrete crystals and supporting components. Compared to a bare crystal resonator used with an external buffer, this integrated XO reduces component count, improves layout predictability, and enhances start-up reliability due to internal compensation. However, the ASD1 consumes slightly more power (4mA typical vs. ~1–2mA for optimized crystal-resonator-inverter designs) and offers less flexibility in tuning pull capacitors. For space-constrained designs like wearables or IoT edge nodes, the reduced BOM and proven oscillation margin justify the modest increase in supply current.

How does the operating temperature range of -40°C to 85°C influence the selection of the ASD1-12.000MHZ-LR-T for automotive-grade versus commercial consumer electronics, and what hidden design risks might emerge at temperature extremes?: Although the ASD1-12.000MHZ-LR-T meets industrial temperature standards, it is not qualified for full automotive AEC-Q200 requirements unless explicitly certified. At -40°C, the oscillator may exhibit slower start-up times or increased phase noise due to crystal aging effects, while at 85°C, supply current can approach the 4mA upper limit under load. These behaviors are generally manageable in commercial systems but could introduce timing drift in time-critical communications if not compensated. Engineers should validate start-up behavior across the full temperature range during prototype testing, especially in applications like industrial motor control or data loggers exposed to ambient thermal cycling.

Can the ASD1-12.000MHZ-LR-T operate reliably in environments with high electromagnetic interference (EMI), and what layout practices are recommended to maintain signal integrity and minimize radiated emissions?: As a digital output device, the ASD1-12.000MHZ-LR-T generates periodic switching currents that can contribute to EMI if not properly managed. Its 2.5x2.0mm footprint allows for tight placement near the MCU, minimizing trace length and loop area. To reduce radiated emissions, designers should route the output away from sensitive analog lines, use ground planes beneath the oscillator, and avoid routing high-speed signals parallel to the clock line for extended distances. Additionally, decoupling capacitors (typically 10nF placed within 5mm of VDD) help suppress supply transients. While the part itself lacks shielding, careful PCB discipline ensures compliance with FCC Class B limits in most non-automotive deployments.

What is the significance of the “No Lead” SMD packaging in the ASD1-12.000MHZ-LR-T, and how does it affect reflow soldering profiles compared to traditional gull-wing leaded oscillators?: The “No Lead” designation indicates a chip-scale solder pad configuration rather than protruding leads, enabling higher-density assembly on PCBs. For the ASD1-12.000MHZ-LR-T, this means direct attachment to pads using standard reflow profiles, improving solder joint consistency and reducing risk of mechanical stress during thermal cycling. However, precise alignment during placement is critical due to lack of self-centering geometry, and voiding in solder joints can affect long-term reliability if flux residues remain. Manufacturers typically recommend peak temperatures between 240–250°C with minimal dwell above 220°C to preserve crystal integrity—requirements stricter than for through-hole or leaded SMD parts.

How does the HCMOS output type of the ASD1-12.000MHZ-LR-T interact with capacitive loading, and what happens if driven by a long trace or multiple logic inputs without buffering?: The ASD1-12.000MHZ-LR-T drives HCMOS-compatible loads with specified rise/fall times and output impedance characteristics derived from internal driver strength. Driving excessive capacitive loads—such as long PCB traces (>10cm) or multiple input stages in parallel—can degrade waveform integrity, increase power consumption, and destabilize oscillation due to loading beyond the oscillator’s sink/source capability. In such cases, a series termination resistor (e.g., 22Ω) or a buffer IC may be necessary. Conversely, driving very light loads may result in overshoot or ringing, so impedance matching and stub minimization are advised for stable operation at full speed.

When substituting the ASD1-12.000MHZ-LR-T into an existing design using a different 12MHz oscillator, which parameters require closest attention to avoid functional failure, and why is frequency tolerance often misinterpreted in datasheet comparisons?: Key substitution parameters include supply voltage (must remain at 3V), output logic type (HCMOS vs. LVCMOS), enable pin polarity, and package footprint compatibility. Frequency tolerance is frequently conflated with frequency stability; the ASD1 specifies ±25ppm stability over temperature, not initial tolerance, which is typically tighter (±10ppm or better). Assuming identical initial accuracy without verification can lead to cumulative timing errors in multi-node systems or time-sensitive protocols like UART baud rate generation. Designers should also confirm start-up time (<5ms per datasheet) aligns with boot sequences, as delayed clock availability may cause MCU resets or peripheral lockups.

Parts with Similar Specifications

The three parts on the right have similar specifications to Abracon LLC ASD1-12.000MHZ-LR-T

Product Attribute
Part Number	ASD1-10.000MHZ-LR-T	ASD1-12.000MHZ-EC-T3	ASD1-12.000MHZ-EC-T	ASD1-11.0592MHZ-LR-T
Manufacturer	Abracon LLC	Abracon LLC	Abracon LLC	Abracon LLC
Series	-	-	-	-
Frequency	-	-	-	-
Output	-	-	-	-
Voltage - Supply	-	-	-	-
Absolute Pull Range (APR)	-	-	-	-
Current - Supply (Max)	-	-	-	-
Ratings	-	-	-	-
Operating Temperature	-	-40°C ~ 85°C	0°C ~ 70°C	-40°C ~ 85°C
Current - Supply (Disable) (Max)	-	-	-	-
Package	-	Tape & Reel (TR)	Tube	Tape & Reel (TR)
Package / Case	-	196-LFBGA	16-DIP (0.300', 7.62mm)	64-VFQFN Exposed Pad
Frequency Stability	-	-	-	-
Type	-	-	-	-
Size / Dimension	-	-	-	-
Base Resonator	-	-	-	-
Function	-	-	-	-
Mounting Type	-	Surface Mount	Through Hole	Surface Mount
Height - Seated (Max)	-	-	-	-

ASD1-12.000MHZ-LR-T Datasheet PDF

Download ASD1-12.000MHZ-LR-T pdf datasheets and Abracon LLC documentation for ASD1-12.000MHZ-LR-T - Abracon LLC.

Datasheets: Cylindrical Battery Holders.pdf
3D Drawings: ASD.pdf.pdf
Environmental Information: Cylindrical Battery Holders.pdf

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Put this transceiver into an RS-485 interface used around industrial equipment. Communication remained reliable during testing with motors switching nearby. Good result for the replacement board.
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Used this rectifier in a high-current power supply repair. Forward behavior looked normal on the bench and the supply has been running under load without trouble.
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Needed the exact ST10F269Z2Q6 for servicing an older control unit. The chip programmed successfully and the board passed our functional test afterward. Much easier than redesigning around a newer MCU.
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Aug 28, 2026

I needed this ADC for an older data acquisition board. Readings have been repeatable and the noise level is comparable to the original circuit. Happy with the purchase.
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one of my hobbies is skydiving. and when i'm skydiving this works great.
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In-stock items can be shipped within 24 hours. Some parts will be arranged for delivery within 1-2 days from the date all items arrive at our warehouse. And Allelco ships order once a day at about 17:00, except Sunday. Once the goods are shipped, the estimated delivery time depends on the shipping methods and Delivery destination. The table below shows are the logistic time for some common countries.

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Common Countries Logistic Time Reference
Region	Country	Logistic Time(Day)
America	United States	5
America	Brazil	7
Europe	Germany	5
	United Kingdom	4
	Italy	5
Oceania	Australia	6
Oceania	New Zealand	5
Asia	India	4
Asia	Japan	4
Middle East	Israel	6

DHL & FedEx Shipment Charges Reference
Shipment charges(KG)	Reference DHL(USD$)
0.00kg-1.00kg	USD$30.00 - USD$60.00
1.00kg-2.00kg	USD$40.00 - USD$80.00
2.00kg-3.00kg	USD$50.00 - USD$100.00

Note:: The above table is for reference only. There may have some data bias for the uncontrollable factors.
Contact us if you have any questions.

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