SMD Quartz Crystal HC-M49SMD-3P

SMD Quartz Crystal HC-M49SMD-3P

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A 32 kHz oscillator refers to an electronic oscillator that generates a signal with a frequency of 32 kHz (kilohertz). Such oscillators are commonly used in various applications, especially in timekeeping and low-power devices. 32 kHz oscillators are often used as timekeeping components in digital watches, clocks, and other devices that require accurate time measurement. The frequency can be divided down to provide seconds, minutes, and hours.This oscillator frequency is often chosen for applications that prioritize low power consumption. Devices such as battery-operated watches and wearable devices benefit from the energy efficiency of a 32 kHz oscillator.Many microcontrollers and embedded systems include a 32 kHz oscillator as an option. It provides an accurate time reference for various internal functions, even when the main clock is turned off to save power.

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Quartz resonators Features

A surface mount version of the AT-49.

High reliability by a hermetically sealed metal package.

Correspond to automatic mounting and reflow soldering.

AEC-Q200 Compliant

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Typical 11.4 x 4.7x 3.9 mm Glass seal SMD crystal

Electrical Parameters

ITEMSymbolSpecificationsRemark
Holder HC-M49S3 
Mode of Oscillation 

Fundamental

3 Overtone   5 Overtone

FrequencyFL3.579~70.0MHz 
Load CapacitanceCL5~32Pf 
Frequency ToleranceTOL±10~±45PPMAt 25℃±3℃
Storage Temperature RangeTR-20 to 70 
Freq Temp CharacteristicsTC±50PPMWorking temperature△F

Series Resista

ce

Rs50Ω

FDLD<10ppm DLD2=30% ESR

RDLD2=ESR

Drive LevelDL100uWMax
SPDB< -3dB (From F0-200KHz to F0+400KHz)
Shunt CapacitanceCo7PF 
Storage Temperature Range -40 to 85 
Insulator Resistance 500Min
Aging Rate△f/f±5ppm/yrMax
Measure CircuitrS&A 250B TT network

Dimensions

SMD Quartz

quartz resonators

Reflow

Profiles FeatureHigh-Pb Assembly
Average Ramp-up Rate (Ts max to Tp)3℃/second max.
Preheat
■  Temperature Min (Ts min)
■  Temperature Max (Ts max)
■  Time (ts min to ts max)
140℃
180℃
70~100 seconds
Time maintained above
■  Temperature (TL)
■  Time (tL)
240℃
20~50 seconds
Peak/Classification Temperature (Tp)250℃
Time within 5℃ of actual Peak
Temperature (tp)
7~8 seconds
Ramp-down rate6℃/second max.
Time 25℃ to Peak Temperature6 minutes max.

 

FAQ:

  1. How does A-Crystal support you: Free samples , OEM, Reliability test report, Product return report (8D report), RoHS substances compliant, REACH substances compliant
  2. What’s A Crystal’s performance Certificate?ISO 9001 quality management [9001 ISO 2015], ISO14001
  3. How many Production patents A Crystal has: 16
  4. Payment terms: T/T in advance
  5. Which express service: DHL, UPS, TNT, FedEx
  6. A Crystal’s monthly production capacity for 32.768 oscillators:1kk
  7. What’s the MOQ/Standard packing quantity: 3k per reel ( a crystal 32.768)
  8. Lead Time for the 32.768 khz clock oscillator: 3days-14days
  9. A Crystal produces tuning fork crystals with 32.768 khz xtl.
  10. Factory address: 32th Building, A District, Feiyue Technology Innovation Park, Jiaojiang, Taizhou, Zhejiang, China. ZIP:318014
  11. What is the lead time for:
Series ProductQuartz crystal sizeLead Time
HC49 SeriesHC-49SMD,HC-49S,HC-49U1-2 weeks
SMD quartz Crystals2012/2016/2520/3225/5032/6035/7050/80451-4 weeks
SMD crystal Oscillators2016/2520/3225/5032/70501-3 weeks
TCXO2520/3225/50322-5 weeks
SMD Watch/tuning fork CrystalsPSX315/PSX415/PSX519/PMX145/PMX206/PMX206F/PMX206FA/PMX405/PMX4061-2 weeks
VCXO2520/3225/50322-5weeks
TCVCXO2520/3225/50322-5weeks
DIP Watch/tuning fork CrystalsDT206/DT3081-2weeks
ZTA/ZTT SeriesZTTCC/ZTACC/1-2weeks

12.Free crystal samples and shipment fee ?

We provide you 20pcs free quartz crystals samples [no free samples for oscillators and TCXO,VCXO, and VCTCXO]. Customers to pay only the shipping fees.

 

  1. What basic information to provide when ordering a crystal?
SMD or DIPCrystal package size[mm]2pads ,3pads or 4pads...
Frequency: GHz,MHz or KHz frequency tolerance[ppm]frequency characteristics over temperature[ppm]
load capacitance[pF]operating temperature[℃] resistance(ESR)[Ω/㏀]
Supply Voltage[V]Output typeapplication
  1. Main sources of ACrystal component parts
Crystal BarChina
BaseNEC (Japan)
Outer coveringNEC (Japan)
ResinHENKEL (Germany)
High-temperature crystalKDS (Japan)

15. DIP cylinder crystal Production & Test Equipment

Equipment NameManufacturerQuantityPurpose
CoatersKorea3put the silver on the tuning fork tips
Auto  DispensingJapan5Stick the crystal on base
Fine tuningChina32Frequency modulation and control
WeldingChina12To weld the  outer covering and base
Laser MarkingChina3Marking on the outer covering
250BUSA3Test the frequency
High and low temperature testingUSA3High and low temperature testing
Automatic testingChina8Test the crystal

Insulated resistance tester

 

China6Test the crystal
  1. PMX145/206/308SMD    Production & Test Equipment

 

NO.Use processEquipment NameModelmanufacturerUnitQuantity
1Pin bendingAuto  pin bendingDT206/308CHINAPCS2
2Pin cuttingAuto pin cuttingDT308/206CHINAPCS6
3Spot weldingspot weldingSW-ⅡCHINAPCS16
4Auto spot weldingSW-300(refit )CHINAPCS2
5Plastic packageHF Preheat machineHDP-320CHINAPCS4
6hydraulic machineMP-125CHINAPCS4
7OrthopedicHydraulic PressesYN-12CHINAPCS10
8MarkingLaser MarkingYAG-M-50CHINAPCS5
9Testing equipmentClock TesterQWA-5ACHINA TWPCS1
10Crystal impedance meterFT-327BCHINAPCS20
11network analyzer250BUSAPCS3
12Frequency meterFT-100TCHINAPCS15
13Automatic testingBJ-308/206CHINAPCS20
14crystal calibrationGY3020CHINA TWPCS1
15Crystal impedance meterCZ-5CCHINA TWPCS1
16SpectrometerZDX8600CHINA TWPCS1
17ReflowT1000CHINAPCS1
18Insulated resistance testerTH3681ACHINA TWPCS1
19Incubator4310USAPCS4
20TapingAuto TapingPMX206CHINAPCS9
  1. Quality  Management

Ø A-crystal supports its customer base through the pursuit of continuous quality improvement.

Ø World-Class leading product designs.

Ø  ISO-9001 certified production and Quality management

Ø Reliability testing for all products to ensure quality stability.

Ø Strict quality evaluation of all raw material suppliers

Ø Customers satisfaction feedback program for quality assurance

Ø Complete sales & after-sales quality service and customer care

Ø Regular employee trainings to achieve continuous quality improvement.

Management participation programs to promote  commitment to highest quality standards and customer focus.

  1. How’s a-crystal’s  Customer Care: returns process                                                                                                                 
  1. How to see a crystal production line radio on tube: https://www.acrystals.com/about-us_d1
  1. How to attach a tuning fork to PCB/A crystal recommended Solder Reflow?

Soldering Characteristics

A variety of methods can be used to solder A-Crystal products to PCB and substrates

Ø Wave or Dual Wave

Ø Hot Air or Convection Flow

Ø Vapor Phase Reflow

Ø Infrared Reflow

Ø Bubble Solder Immersion

Ø Tohers (Laser,etc)

ModelPre-heating timeReflow TemperatureReflow time
SMD Tuning fork 01(lead free)60-120 Seconds230℃ Max10 Seconds Max
SMD Tuning fork 02(no lead free for solder, but ROHS compliant)30-60 Seconds260℃ Max10 Seconds Max
HC-49U30-60 Seconds250℃ Max10 Seconds Max
HC-49S series30-60 Seconds250℃ Max10 Seconds Max
HC-49SM series30-60 Seconds250℃ Max10 Seconds Max
UM series30-60 Seconds250℃ Max10 Seconds Max
SMD crystal units30-60 Seconds250℃ Max10 Seconds Max
Clock Oscillator30-60 Seconds250℃ Max5 Seconds Max
VCXO30-60 Seconds250℃ Max5 Seconds Max
SMD oscillator30-60 Seconds260℃ Max10 Seconds Max
Ceramic Resonator30-60 Seconds225℃ Max10 Seconds Max
Ceramic Filter30-60 Seconds225℃ Max10 Seconds Max
  1. What’s the pictures of the A crystal time quartz watch XTAL/ timing oscillator/tuning fork resonator?                                                             
  1. Package:

Package is made of corrugated paper with thickness of 0.8cm.

Each Package contains 10 inner boxes, each box has 1 plastic reel

Each reel has 3000 pieces of Crystal Resonators

Therefore Total package contains 30,000 pieces of crystal resonators.

Large package contains 20 inner boxes (60, 000 pieces of crystal resonators)

  1. Why A Crystal?

Pricing:   Highly competitive pricing

Quality: ISO 9001 certified quality system and knowledgeable quality assurance team.

Delivery : Short lead-time for standard products and on time delivery for customized products.

Service:   Comprehensive skilled technical support

 

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A 32 kHz oscillator refers to an electronic oscillator that generates a signal with a frequency of 32 kHz (kilohertz). Such oscillators are commonly used in various applications, especially in timekeeping and low-power devices. 32 kHz oscillators are often used as timekeeping components in digital watches, clocks, and other devices that require accurate time measurement. The frequency can be divided down to provide seconds, minutes, and hours.This oscillator frequency is often chosen for applications that prioritize low power consumption. Devices such as battery-operated watches and wearable devices benefit from the energy efficiency of a 32 kHz oscillator.Many microcontrollers and embedded systems include a 32 kHz oscillator as an option. It provides an accurate time reference for various internal functions, even when the main clock is turned off to save power.

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