AS-20.000-20-SMD-TR

CRYSTAL, 20MHZ, 20PF, 10.3MM X 3.8MM

⚠️ Reference pricing provided. In case of supply shortages, we will connect you with our trusted procurement partners to ensure your project's continuity.

Manufacturer: RALTRON
Product type: Crystals
Frequency Nom:20MHz; Crystal Case:SMD, 10.3mm x 3.8mm; Frequency Stability + / -:50ppm; Load Capacitance:20pF; Frequency Tolerance + / -:30ppm; Product Range:AS-S 80AC8619
SVHC: No SVHC (27-Jun-2024)
Frequency Nom: 20MHz
Product Range: AS-SMD Series
Load Capacitance: 20pF
Crystal Case / Package: SMD, 10.3mm x 3.8mm
Frequency Stability + / -: 50ppm
Frequency Tolerance + / -: 30ppm
Operating Temperature Max: 70°C
Operating Temperature Min: -20°C

Delivery and price
Units per pack	1000
Price	0.487 €
Current stock	50+
Lead time	30 days

Datasheet

**MICROPROCESSOR CRYSTAL HC-49/US LOW PROFILE** 

## **FEATURES** 

## _**SERIES AS-SMD**_ 

EXCELLENT CLOCK SIGNAL GENERATOR FOR CPU’s AVAILABLE IN EXTENDED TEMPERATURE RANGE LOW PROFILE SURFACE MOUNT 

## **SPECIFICATIONS** 

|**SPECIFICATIONS**|**SPECIFICATIONS**||
|---|---|---|
|FREQUENCY RANGE||3.20 MHz TO 70.00 MHz|
|MODE OF OSCILLATION|FUNDAMENTAL|3.20 MHz TO 40.320 MHz|
||THIRD OVERTONE|24.576 MHz TO 70.00 MHz|
|FREQUENCY TOLERANCE AT 25°C||±30 PPM  TYPICAL<br>±50 PPM  MAXIMUM|
|FREQUENCY STABILITY OVER TEMPERATURE RANGE||±50 PPM  TYPICAL<br>±100 PPM  MAXIMUM|
|OPERATING TEMPERATURE RANGE||-20º C TO +70º C STANDARD|
|||-40º C TO +85º C EXTENDED|
|STORAGE TEMPERATURE RANGE||-55º C TO +125º C|
|AGING||±5 PPM PER YEAR MAXIMUM|
|LOAD CAPACITANCE||10 pF TO 32 pF OR SERIES|
|EQUIVALENT SERIES RESISTANCE (ESR)||SEE TABLE|
|DRIVE LEVEL||0.1 mW TYPICAL|
|REFLOW CONDITIONS||260º C FOR 10 s MAXIMUM|



## **TYPICAL FREQUENCIES AND ESR CHARACTERISTICS** 

|FREQUENCY<br>(MHz)|ESR MAX<br>(OHM)|MODE|FREQUENCY<br>(MHz)|ESR MAX<br>(OHM)|MODE|FREQUENCY<br>(MHz)|ESR MAX<br>(OHM)|MODE|FREQUENCY<br>(MHz)|FREQUENCY<br>ESR MAX<br>(OHM)|ESR MAX<br>MODE|
|---|---|---|---|---|---|---|---|---|---|---|---|
|3.579545|180|FUND|8.064|60|FUND|14.7456|50|FUND|47.920|70|3OT|
|3.6864|150|FUND|8.192|60|FUND|16.000|40|FUND|48.000|70|3OT|
|4.000|130|FUND|8.6436|60|FUND|16.000312|40|FUND|50.688|70|3OT|
|4.032|130|FUND|9.600|60|FUND|16.384|40|FUND|52.416|70|3OT|
|4.096|130|FUND|9.8304|60|FUND|19.6608|40|FUND|56.448|70|3OT|
|4.194304|130|FUND|10.000|50|FUND|20.000|40|FUND|60.000|70|3OT|
|4.433619|130|FUND|10.240|50|FUND|24.000|40|FUND|70.000|70|3OT|
|4.9152|130|FUND|10.244|50|FUND|24.576|40/80|FUND/3OT||||
|5.0688|100|FUND|10.245|50|FUND|27.000|40/80|FUND/3OT||||
|6.000|80|FUND|11.000|50|FUND|28.63636|40/80|FUND/3OT||||
|6.144|80|FUND|11.0592|50|FUND|29.000|40/70|FUND/3OT||||
|6.176|80|FUND|11.2896|50|FUND|32.000|40/70|FUND/3OT||||
|7.15909|70|FUND|12.000|50|FUND|32.768|40/70|FUND/3OT||||
|7.3728|70|FUND|12.288|50|FUND|36.000|40/70|FUND/3OT||||
|7.680|70|FUND|12.800|50|FUND|40.000|40/70|FUND/3OT||||
|8.000|60|FUND|14.31818|50|FUND|40.320|40/70|FUND/3OT||||



## **PART NUMBERING SYSTEM** 

|HOLDER TYPE|HOLDER TYPE||FREQUENCY|FREQUENCY|FREQUENCY|LOAD CAPACITANCE|LOAD CAPACITANCE|LOAD CAPACITANCE|||||||MODE*|||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|||-|||-||||||-|||||-||||
|AS|HC-49 SHORT||IN MHz||10 TO 32 pF FOR PARALLEL<br>IN MHz|10 TO 32 pF FOR PARALLEL|10 TO 32 pF FOR PARALLEL<br>S FOR SERIES|||||||F<br>3OT|FUNDAMENTAL<br>THIRD OVERTONE|||||
|||||||||||||||||||||
|TOLERANCE/STABILITY**|||||EXTENDED<br>TEMPERATURE||CONFIGURATION||||||||HEIGHT**||||TAPE AND REEL|
|||||-|||-||-||||STD||4.6 mm (STANDARD)|||-||
|(PPM/PPM)<br>EXAMPLES: 1020, 1010||EXAMPLES: 1020, 1010|||EXT||SMD|SMD TYPE|||||H32<br>H30||3.2 mm (CUSTOM)<br>3.0 mm (CUSTOM)||||TR|
||||||||||||||H25||2.5 mm(CUSTOM)|||||



- ONLY FOR FREQUENCIES OVER 24.576 MHz 

- ** INCLUDED IN THE PART NUMBER ONLY IF DIFFERENT FROM THE STANDARD. 

- EXAMPLES: AS-10.000-20-F-SMD-TR, AS-32.000-18-3OT-1010-EXT-SMD-H30-TR 

NOTE: QUANTITIES UNDER 1,000 PIECES ARE SHIPPED IN BULK. 

**Raltron Electronics Corporation 10651 NW 19th St. Miami, Florida 33172 U.S.A. Tel: 305-593-6033 Fax: 305-594-3973 e-mail: sales@raltron.com Internet: http://www.raltron.com** 

**MICROPROCESSOR CRYSTAL HC-49/S LOW PROFILE** 

## _**SERIES AS-SMD**_ 

## **OUTLINE DRAWING** 

## **RECOMMENDED SOLDER PATTERN** 

**==> picture [172 x 311] intentionally omitted <==**

**----- Start of picture text -----**<br>
MARKING<br> AREA<br>(COP<br>10.30 MAX 3.80 MAX<br>0.406 MAX 0.150 MAX<br> “H”<br>0.38 MIN<br>0.015 MIN<br>HEIGHT "H" (MAXIMUM)<br>: Cd a7 STDH32 4.6 mm/.181 in3.2 mm/.126 in<br>H3 3.0 mm/.118 in<br>H25 2.5 mm/.100 in<br> 12.0 MAX<br>0.472 MAX<br>13.50 MAX<br>= 0.531 MAX =——<br>5.5 4.0 5.5<br>.217 .16 .217<br>0.65 TYP 0.026 TYP<br>0.75 ± 0.25 0.030 ± 0.010<br>4.80 MAX  0.189 MAX<br>2.0 .08<br>**----- End of picture text -----**<br>


## **CARRIER TAPE DIMENSIONS** 

**==> picture [361 x 123] intentionally omitted <==**

**----- Start of picture text -----**<br>
330 mm REEL DIAMETER<br>24 mm TAPE WIDTH Ø1.5 DIA<br>12 mm PITCH1000 PIECES PER REEL Ø.059 DIA \ 7- .1574.0<br>\ 4<br>5.5<br>12.0 .217<br>.472<br>.75<br>1 .069<br>11.5 .453<br>24.0 .945<br>**----- End of picture text -----**<br>


## **REFLOW SOLDERING PROFILE** 

**Raltron Electronics Corporation 10651 NW 19th St. Miami, Florida 33172 U.S.A. Tel: 305-593-6033 Fax: 305-594-3973 e-mail: sales@raltron.com Internet: http://www.raltron.com**

Updated at April 20, 2026

About Novapart

Novapart is a B2B electronic component broker specialising in stock shortages and cost reduction. We source hard-to-find parts and identify compliant alternatives across a catalogue of 410,000+ components from 500+ manufacturers.

Learn more →

Stock Shortage Specialist

When a component is unavailable, discontinued or has an unacceptable lead time, we tap into our network of vetted European and Asian distributors to source what you need — without compromising on quality or traceability.

Request a quote →

Compliant Alternatives

We identify pin-to-pin, electrically equivalent substitutes that meet the same certifications (RoHS, AEC-Q100, REACH) as your original specification — validated against datasheets, not just part numbers. Often at a lower cost.

BOM Analysis service →