NX3225GA-55.46667HMZ - 55.46667MHz SMD Crystal | NDK | OA/AV Timing
Артикул: NX3225GA-55.46667HMZ ✓ Активен| Кол-во | Цена за ед. | Итого |
|---|---|---|
| 1 | $0.85 | $0,85 |
| 10 | $0.68 | $6,80 |
| 100 | $0.45 | $45,00 |
| 500 | $0.32 | $160,00 |
| 1.000 | $0.25 | $250,00 |
NX3225GA-55.46667HMZ Обзор
A quartz crystal unit is a passive frequency-control device that uses the piezoelectric resonance of an AT-cut quartz blank to generate a highly stable reference frequency. Within the timing-device hierarchy, it sits at the component level: crystal unit -> resonator -> frequency-control component -> system clock source, feeding oscillators, PLLs, MCUs, SoCs, and networking PHYs that require a precise clock reference.
Key features include the ultra-compact and thin 3.2 x 2.5 x 0.75 mm (typ.) seam-welded ceramic package, excellent environmental resistance including heat and shock resistance, and excellent electrical performance optimized for OA and AV related equipment. The seam-sealed construction protects the resonating quartz element from moisture and contaminants, supporting reflow soldering processes.
Technically, the NX3225GA family covers a fundamental/ overtone frequency range in the tens of MHz; per the NDK standard specification (STD-CRG-2), equivalent series resistance limits scale with frequency, for example 50 ohms max in the 20 to 50 MHz band. The 55.46667 MHz calibration frequency is trimmed to tight tolerance at the factory, and the precise 55.46667 MHz value is commonly used for high-speed serial and video clock synthesis.
Typical applications include LAN and networking equipment, digital video and set-top box clock references, OA equipment such as printers and scanners, and AV amplifiers or display timing circuits where board space is constrained.
Design consideration: PCB layout must respect the crystal's load capacitance specification; stray board capacitance shifts the operating frequency, so keep traces short and place ground guarding around the crystal pads.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
Аналоги без доработки для NX3225GA-55.46667HMZ — тот же корпус, pin-to-pin совместимость. Компоненты в других корпусах, требующие переработки PCB, исключены.
Варианты в этой серии
Модели той же серии, совместимые без доработки с NX3225GA-55.46667HMZ (тот же форм-фактор и посадочное место) — отличается по Nominal Frequency, Package Type, Mounting Type, Package Dimensions.
Инструмент быстрого сравнения — выберите альтернативные компоненты для сравнения бок о бок:
NX3225GA-42.000MHZ
✅ Прямая замена✓ В наличии
$0.19 / шт.
Открыть даташит →NX3225GA-48.000MHZ
✅ Прямая замена ⚠️ Характеристики не проверены📋 Справочный аналог (нет в каталоге)
NX3225GA-50.000MHZ
✅ Прямая замена ⚠️ Характеристики не проверены📋 Справочный аналог (нет в каталоге)
NX3225GA-24.000MHZ
✅ Прямая замена✓ В наличии
$0.28 / шт.
Открыть даташит →NX3225GA-55.46667HMZ Характеристики
| Nominal Frequency | 55.46667 MHz |
| Product Series | NX3225GA Standard (For OA / AV) |
| Frequency Category | 55 to 56 MHz band |
| Package Dimensions | 3.2 x 2.5 x 0.75 mm (typ.) |
| Package Type | Seam-welded ceramic SMD (3225) |
| Тип монтажа | Surface Mount |
| Terminals | 2 pads |
| Equivalent Series Resistance (20-50 MHz band, STD-CRG-2) | 50 ohm max |
| Environmental Resistance | Excellent heat and shock resistance (per NDK) |
| Reflow Soldering | Reflow temperature profile supported (per NDK) |
Конфигурация выводов NX3225GA-55.46667HMZ
| Контакт 1 | XTAL1 — Crystal terminal 1 - connects to oscillator inverting input / load capacitor (non-polarized; orientation is interchangeable per datasheet) |
| Контакт 2 | XTAL2 — Crystal terminal 2 - connects to oscillator output / load capacitor (non-polarized; orientation is interchangeable per datasheet) |
Типичное применение
NX3225GA-55.46667HMZ подходит для 6 применениеs: LAN and Networking Equipment, Digital Video and Set-Top Boxes, Office Automation Equipment, Audio/Visual Amplifiers and AV Receivers, Embedded Controllers and IoT Devices, Test and Measurement Instrument Clocks.
LAN and Networking Equipment
The NX3225GA-55.46667HMZ serves as a frequency reference for Ethernet PHYs, switch ASICs, and PLL clock synthesizers in LAN equipment, where 55.46667 MHz-related reference frequencies feed SerDes and MAC timing chains. Its AT-cut quartz resonance provides the stable, low-jitter reference that gigabit links require, and the 50 ohm-class equivalent series resistance in the adjacent 20-50 MHz STD-CRG-2 band ensures reliable oscillation start-up with standard inverter-based Pierce oscillators. The compact 3.2 x 2.5 x 0.75 mm package lets designers place the crystal directly beside the PHY chip, minimizing trace length, stray capacitance, and EMI pickup on the oscillation loop - critical for meetingClass-B emissions in dense switch boards.
Рекомендуется
Digital Video and Set-Top Boxes
Video decoders, HDMI transmitters, and set-top box SoCs frequently require non-standard reference frequencies, and 55.46667 MHz is a typical value derived from video pixel-clock PLL synthesis. The NX3225GA-55.46667HMZ provides this exact calibration in a 2-pad package that occupies minimal board area next to the SoC. NDK specifies excellent heat and shock resistance for the NX3225GA series, which matters in set-top boxes where sustained playback raises internal temperature and shipping vibration stresses solder joints. The seam-welded ceramic package prevents moisture ingress during reflow and in humid operating environments, protecting the resonance stability that clean video timing demands.
Рекомендуется
Office Automation Equipment
Printers, scanners, copiers, and MFP controller boards are the primary target market NDK cites for the NX3225GA series. These products use multiple clock domains - main MCU, image-processing ASIC, and USB or network interface - and the NX3225GA-55.46667HMZ supplies a high-frequency reference where the timing architecture requires it. The 3.2 x 2.5 mm footprint allows the crystal to fit under shielding cans on densely routed controller PCBs, and its thin 0.75 mm profile suits low-profile scanner heads and compact print engines. NDK's mass-production quality control delivers uniform frequency accuracy across high-volume OA manufacturing runs.
Рекомендуется
Audio/Visual Amplifiers and AV Receivers
AV equipment such as digital audio processors, HDMI-equipped receivers, and video switchers use crystal-based references for audio clocks and video timing. The NX3225GA-55.46667HMZ's stable AT-cut resonance minimizes frequency drift that would otherwise cause audible clock jitter or video frame-drop artifacts. Because NDK optimized the NX3225GA electrically for AV applications, its equivalent series resistance and load-capacitance behavior yield dependable start-up in standard Pierce or Colpitts oscillator stages used in AV SoC reference circuits. The heat-resistant construction tolerates the warm interior of enclosed AV amplifiers without significant frequency shift over the product lifetime.
Рекомендуется
Embedded Controllers and IoT Devices
Microcontroller and wireless-module reference circuits benefit from the NX3225GA-55.46667HMZ when a PLL must multiply up to a specific radio or serial baud clock. The 2-pad, low-height package suits the shrinking PCB area of smart-home sensors and gateway nodes, and NDK's shock resistance ensures the crystal survives drop testing common in consumer IoT qualification. With a typical oscillator start-up facilitated by the series' controlled ESR, designers can use standard MCU internal oscillator amplifiers without external buffer stages. Keep load capacitors close to the crystal pads to preserve the 55.46667 MHz calibration accuracy.
Рекомендуется
Test and Measurement Instrument Clocks
Bench instruments, data-acquisition modules, and signal generators need dependable reference crystals before a PLL locks to a primary standard. The NX3225GA-55.46667HMZ's factory calibration at an exacting 55.46667 MHz supports synthesizer architectures that divide and multiply this reference to instrument-grade output frequencies. NDK's documented heat resistance keeps drift predictable during warm-up, and the seam-sealed ceramic package prevents ambient humidity from shifting the resonance - a key factor for instruments calibrated annually. The low-profile SMD format also fits front-panel and modular PXI-style boards with height restrictions.
Рекомендуется
Сводка рекомендуемых товаров
Справочные инженерные данные для NX3225GA-55.46667HMZ — сравнение, рекомендации по проектированию и информация о соответствии.
Руководство по выбору
Сравнение с аналогами
| Параметр | Этот товар | NX3225GA-42.000MHZ | NX3225GA-48.000MHZ | NX3225GA-50.000MHZ | NX3225GA-24.000MHZ |
|---|---|---|---|---|---|
| Package | 3.2 x 2.5 x 0.75 mm SMD (3225) | 3.2 x 2.5 x 0.75 mm SMD (3225) - same | 3.2 x 2.5 x 0.75 mm SMD (3225) - same | 3.2 x 2.5 x 0.75 mm SMD (3225) - same | 3.2 x 2.5 x 0.75 mm SMD (3225) - same |
| Brand | NDK (Nihon Dempa Kogyo) | NDK | NDK | NDK | NDK |
| Nominal Frequency | 55.46667 MHz | 42.000 MHz | 48.000 MHz | 50.000 MHz | 24.000 MHz |
| Frequency Difference vs This Part | Reference (0%) | -24.3% | -13.5% | -9.9% | -56.7% |
| Terminal Count | 2 pads | 2 pads | 2 pads | 2 pads | 2 pads |
| ESR Limit (STD-CRG-2) | Confirm with NDK for >50 MHz | 50 ohm max (20-50 MHz band) | 50 ohm max (20-50 MHz band) | 50 ohm max (20-50 MHz band) | 50 ohm max (20-50 MHz band) |
| Target Application | OA / AV equipment | OA / AV equipment | OA / AV equipment | OA / AV equipment | OA / AV / USB equipment |
Ключевые отличия
- Ultra-thin 0.75 mm profile (против Generic 3225 crystals (typ. 0.8-1.0 mm height))
- Exact non-standard frequency 55.46667 MHz (против NX3225GA-50.000MHZ (50.000 MHz))
- OA/AV-grade environmental robustness (против NX3225GA-24.000MHZ (same construction, lower frequency))
Заметки по проектированию
Layout the 55.46667HMZ crystal loop as compactly as possible: place the two load capacitors within 2-3 mm of the crystal pads and route the XTAL1/XTAL2 traces short (under 10 mm) and of equal length. Guard the crystal with a grounded copper pour, but keep the pour at least 0.5 mm away from the crystal electrodes to avoid adding stray capacitance that shifts the load resonance. Do not route high-speed switching signals under or beside the crystal traces - capacitive coupling injects jitter into the oscillation loop.
Verify the load capacitance code before design-in: the NX3225GA series is ordered with a specification number that defines frequency tolerance and load capacitance, and using load capacitors sized for a different CL shifts the oscillation frequency by tens of ppm. Also confirm the ESR limit applicable above 50 MHz with NDK - the published STD-CRG-2 table tops out at the 20-50 MHz band (50 ohm max), and oscillator loop-gain calculations must use the correct ESR for 55.46667 MHz to guarantee start-up, especially at the temperature extremes.
Keep the oscillator drive level within the crystal's specified limit: excessive drive from a strong inverter ages the quartz blank and drifts the 55.46667 MHz calibration over time. If your MCU/SoC provides selectable oscillator drive strength, choose the lowest setting that still guarantees start-up at the coldest operating temperature; estimated start-up margin can be checked with the negative-resistance method (aim for a negative resistance of at least 5x the crystal's maximum ESR). Add a 1-10 megohm feedback resistor across the inverter input/output for standard Pierce topologies.
Информация о соответствии
RoHS/REACH/lead-free status not stated in the retrieved web data for this exact specification code; request a compliance certificate from NDK or the distributor. The series targets OA/AV (commercial) applications; no automotive AEC-Q200 qualification is claimed.