FOX924B-10.000 - 10MHz TCXO 3.3V HCMOS SMD | Fox / Abracon
부품 번호: FOX924B-10.000 ✓ 활성| 수량 | 단가 | 합계 |
|---|---|---|
| 1 | $5.8 | $5.80 |
| 10 | $5.22 | $52.20 |
| 100 | $4.64 | $464.00 |
| 500 | $4.18 | $2,090.00 |
| 1,000 | $3.72 | $3,720.00 |
FOX924B-10.000 개요
A TCXO (Temperature Compensated Crystal Oscillator) is a crystal oscillator whose frequency-versus-temperature characteristic is actively corrected by a compensation network - usually a varactor driven by a temperature-sensed voltage - so that the output frequency stays within tight bounds across the operating temperature range. Compared with a plain XO, a TCXO trades a slightly higher current draw and unit cost for stability measured in parts per million rather than tens of ppm, which is why TCXOs are the default reference for cellular base stations, GPS modules, industrial metering, and any data-acquisition chain where a stable serial clock is required.
Key features of the FOX924B-10.000 include 2.5 ppm frequency stability over -30 °C to +85 °C, low-profile 1.5 mm maximum height for slim-line modules, HCMOS square-wave output suitable for direct clocking of microcontrollers, FPGAs, and serializer/deserializer (SerDes) PHYs, plus a low-jitter design suitable for serial-protocol reference clocks. The 3.3 V single-rail supply simplifies power tree design; no external bias or charge-pump circuitry is required.
The part is built around an AT-cut quartz resonator and a compensation IC in a hermetically sealed ceramic SMD package, delivering stable 10.000 MHz output across wide thermal swings. Its HCMOS output swings rail-to-rail with a typical rise/fall time suited for short PCB traces; a series-terminated layout is recommended when the clock is distributed more than a few centimeters.
Typical applications include GPS/GNSS module reference clocks, cellular IoT (NB-IoT, LTE-M) timing references, industrial data loggers, smart-metering and energy-monitoring endpoints, machine-to-machine (M2M) communication modules, and consumer wearables requiring a stable low-jitter reference. Its 5x3.2 mm footprint is also well suited for compact handheld and portable designs.
When designing with this device, place a 0.1 µF decoupling capacitor as close as possible to pin #4 (Vcc) and keep the output trace short and impedance-controlled. If a VCTCXO (voltage-controlled) variant is needed for PLL pulling, use the FOX924E equivalent from the same family. This page synthesizes distributor pricing, same-family Fox drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
드롭인 대체품: FOX924B-10.000 — 동일 패키지, 핀 호환. PCB 재작업이 필요한 다른 패키지 부품은 제외됩니다.
빠른 비교 도구 — 나란히 비교할 대체 부품을 선택하십시오:
FOX924B-12.000
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
FOX924B-14.7456
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
FOX924B-16.384
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
FOX924B-20.000
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
ECS-TXO-3225-10.000
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
ASTXRTCXO-10.000MHz
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
FOX924B-10.000 사양
| 기능 | TCXO (Temperature Compensated Crystal Oscillator) |
| Frequency | 10.000 MHz |
| Frequency Stability | 2.5 ppm |
| 공급 전압 | 3.3 V |
| 출력 유형 | HCMOS |
| 동작 온도 범위 | -30 °C to +85 °C |
| 패키지 | 5.0 mm x 3.2 mm SMD ceramic |
| Maximum Height | 1.5 mm |
| 핀 수 | 4 (SMD) |
| Pinout | #1 NC, #2 GND, #3 Output, #4 Vcc (TCXO 'B' pinout) |
| Packaging | Tape & Reel, 2,000 pcs standard |
| Frequency Tuning Method | Internal temperature compensation (no Vc pin on 'B' variant) |
| RoHS 상태 | Compliant (per distributor listings) |
| 실장 유형 | Surface Mount |
| Series | FOX924 (FOX924B family) |
FOX924B-10.000 핀 구성
| 핀 1 | NC — Not connected (FOX924B TCXO pinout; pin 1 = Vc on FOX924E VCTCXO variant) |
| 핀 2 | GND — Ground |
| 핀 3 | Output — HCMOS 10.000 MHz clock output |
| 핀 4 | Vcc — 3.3 V supply voltage; decouple with 0.1 µF ceramic |
일반적인 애플리케이션
FOX924B-10.000 적합 용도: 6 애플리케이션s: GPS / GNSS Module Reference Clock, Cellular IoT (NB-IoT / LTE-M) Timing Reference, Industrial Data Logger / Smart Meter, Machine-to-Machine (M2M) Communication Module, Wearable / Portable Health Monitor, Automotive Telematics / Asset Tracker.
GPS / GNSS Module Reference Clock
The FOX924B-10.000 provides a stable 10.000 MHz HCMOS reference that GPS/GNSS receiver modules such as the u-blox NEO-M8 series can use as their master clock, reducing lock time and improving position hold under weak signal conditions. Its 2.5 ppm stability over -30 °C to +85 °C keeps the GPS baseband within the tight tolerance needed for satellite doppler correlation, and the 3.3 V rail matches the typical GNSS module supply so no level shifter is required. The 5x3.2 mm ceramic footprint fits inside the GNSS module's reference-clock land pattern with standard 4-pad layout (GND, Vcc, Output, NC). Designers should place a 0.1 µF decoupling capacitor within 2 mm of pin 4 and keep the output trace under 25 mm to preserve edge rise time.
추천
Cellular IoT (NB-IoT / LTE-M) Timing Reference
NB-IoT and LTE-M modems require a stable low-jitter reference clock to maintain baseband synchronization with the cellular network. The FOX924B-10.000's 2.5 ppm stability and HCMOS output are well-matched to modules such as the Quectel BG95 and u-blox SARA-R410M, which expect a 3.3 V square-wave reference at typical 10 MHz frequencies. Compared with a plain XO the TCXO holds frequency across outdoor temperature swings from -30 °C to +85 °C, reducing cell reselection and improving coverage at the cell-edge. Its 1.5 mm max height suits slim asset-tracking housings, and the 4-pin SMD pad layout is straightforward to fan out from a cellular module's REF_CLK input pin.
추천
Industrial Data Logger / Smart Meter
Smart electricity, water, and gas meters depend on accurate real-time clocking for time-of-use billing, tamper detection, and remote firmware download. The FOX924B-10.000 supplies a 10 MHz reference that an MCU can divide down to drive an RTC and ADC sample clock, with 2.5 ppm stability ensuring the meter's calendar drifts less than a few seconds per month across outdoor cabinet temperatures. Its HCMOS output drives long PCB traces to multiple loads, and the industrial -30 °C to +85 °C range covers harsh metering installations. The 3.3 V supply aligns with typical low-power MCU rails (e.g., STM32, EFR32), simplifying the BOM and reducing the standby current versus a discrete XO plus compensation circuit.
추천
Machine-to-Machine (M2M) Communication Module
M2M endpoints in vending, fleet telematics, and remote sensor networks require a reliable reference clock that survives unattended thermal cycling. The FOX924B-10.000's TCXO architecture keeps the 10 MHz output within 2.5 ppm across -30 °C to +85 °C, ensuring consistent serial protocol timing (CAN, RS-485, Modbus) and stable wireless link establishment. Its HCMOS output can directly drive an MCU clock input or a CAN transceiver's reference, eliminating an extra clock distribution buffer. The 4-pad 5x3.2 mm SMD layout is compatible with automated pick-and-place assembly, and tape-and-reel packaging (2,000 pcs/reel) supports high-volume production of M2M modules.
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Wearable / Portable Health Monitor
Wrist-worn health monitors and portable medical patches need a low-profile reference clock that maintains frequency accuracy across body-temperature variations. The FOX924B-10.000's 1.5 mm maximum height enables slim wearable enclosures, and its 2.5 ppm stability keeps BLE radio timing and ADC sample rate locked even when the device is in direct skin contact at 35-40 °C. The 3.3 V HCMOS output can feed a Bluetooth SoC such as the Nordic nRF52840 or a bio-sensor AFE without level translation. Its 5x3.2 mm ceramic SMD package is also X-ray inspectable for medical quality audits and supports the high-vibration requirements of wearable drop tests.
추천
Automotive Telematics / Asset Tracker
In-vehicle telematics units and asset trackers operating in non-safety automotive subsystems benefit from the FOX924B-10.000's -30 °C to +85 °C range, which covers both cabin and under-hood-adjacent placements. Its 2.5 ppm stability helps the cellular modem maintain LTE-M or NB-IoT synchronization during long drives through temperature-variable environments, reducing dropped sessions on rural cell towers. The HCMOS 3.3 V output is compatible with automotive-grade telematics modules (e.g., Quectel AG35) without extra components. While this part is not AEC-Q100 qualified, designers targeting automotive use can request an automotive-grade TCXO from the same FOX924 family via Abracon's automotive program.
추천
추천 제품 요약
엔지니어링 참조 데이터: FOX924B-10.000 — 비교, 설계 지침 및 규정 준수 정보.
선택 가이드
대체품과의 비교
| 파라미터 | 이 제품 | FOX924B-12.000 | FOX924B-14.7456 | FOX924B-16.384 | FOX924B-20.000 | ECS-TXO-3225-10.000 | ASTXRTCXO-10.000MHz |
|---|---|---|---|---|---|---|---|
| Package | 5.0 mm x 3.2 mm SMD (4-pin) | 5.0 mm x 3.2 mm SMD (4-pin) | 5.0 mm x 3.2 mm SMD (4-pin) | 5.0 mm x 3.2 mm SMD (4-pin) | 5.0 mm x 3.2 mm SMD (4-pin) | 3.2 mm x 2.5 mm SMD (4-pin) | 3.2 mm x 2.5 mm SMD (4-pin) |
| Brand | Fox / Abracon | Fox Electronics | Fox Electronics | Fox Electronics | Fox Electronics | ECS Inc. | Abracon |
| Frequency | 10.000 MHz | 12.000 MHz | 14.7456 MHz | 16.384 MHz | 20.000 MHz | 10.000 MHz | 10.000 MHz |
| Supply Voltage | 3.3 V | 3.3 V | 3.3 V | 3.3 V | 3.3 V | 3.3 V | 3.3 V |
| Output Type | HCMOS | HCMOS | HCMOS | HCMOS | HCMOS | HCMOS | HCMOS |
| Frequency Stability | 2.5 ppm | 2.5 ppm | 2.5 ppm | 2.5 ppm | 2.5 ppm | 2.5 ppm | 2.5 ppm |
| Operating Temperature | -30 °C to +85 °C | -30 °C to +85 °C | -30 °C to +85 °C | -30 °C to +85 °C | -30 °C to +85 °C | -40 °C to +85 °C | -40 °C to +85 °C |
| Voltage Control (Vc) Pin | No (TCXO) | No (TCXO) | No (TCXO) | No (TCXO) | No (TCXO) | No (TCXO) | No (TCXO) |
주요 차별점
- Industry-standard 5x3.2 mm TCXO footprint with sub-1.5 mm height (vs ECS-TXO-3225-10.000)
- Fox / Abracon dual-source with mature FOX924 family tooling (vs ASTXRTCXO-10.000MHz)
- Higher maximum frequency variants in the same package (vs ECS-TXO-3225-10.000)
설계 노트
Decouple Vcc (pin 4) with a 0.1 µF X7R ceramic placed within 2 mm of the pad and a 10 µF bulk capacitor on the same supply rail within 10 mm. The HCMOS output stage draws narrow current spikes on each clock edge, so a poor decoupling network will show up as frequency modulation or rail sag on adjacent analog blocks. For noise-sensitive GPS or ADC reference chains, add a ferrite bead between the TCXO supply and the main 3.3 V rail to isolate clock-injected supply noise.
Keep the HCMOS output trace short (<25 mm) and maintain 50 Ω characteristic impedance when the clock feeds a remote load, or 33-40 Ω series-terminated when driving multiple endpoints. Avoid routing the output trace parallel to switching converter or RF antenna traces; the 10 MHz fundamental and its 20/30 MHz harmonics couple easily. Place a continuous GND pour under the TCXO and stitch with vias around the four pads to provide a low-impedance return path for the high-edge-rate HCMOS output current.
Do not confuse the FOX924B TCXO pinout (pin 1 = NC) with the FOX924E VCTCXO pinout (pin 1 = Vc) - they share the same 5x3.2 mm package but pin 1 function differs. Mounting a FOX924E in a FOX924B pad layout leaves the Vc pin floating, which can shift output frequency by a few ppm. Also note that the FOX924 family is rated to +85 °C, not +125 °C; for under-hood automotive applications choose an AEC-Q100 qualified TCXO from a different family.
Estimated: the FOX924B-10.000 HCMOS output has typical rise/fall time of 5-8 ns into a 15 pF load. When driving a long trace, calculate the trace capacitance (≈ 1 pF/cm for 4-layer FR4 stripline) and add a series resistor close to the TCXO output pin to damp overshoot; 22-33 Ω is typical for 10-15 cm traces. Always measure the clock eye at the receiver with a high-bandwidth oscilloscope (≥ 500 MHz) before locking the BOM, especially if the downstream IC samples on both edges (DDR-style clocking).
규정 준수 정보
RoHS compliance and lead-free termination per Fox / Abracon distributor listings. AEC-Q100 qualification not stated; this part is targeted at industrial / consumer / IoT segments rather than automotive safety. REACH, halogen-free, and conflict-minerals status not explicitly published in the verified web data.