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| 3 V, SUPER MINIMOLD UPC2745TB SILICON MMIC WIDEBAND AMPLIFIER UPC2746TB FEATURES * HIGH DENSITY SURFACE MOUNTING: 6 pin super minimold or SOT-363 package * LOW SUPPLY VOLTAGE: VCC = 1.8 to 3.3 V * WIDEBAND RESPONSE: UPC2745TB: fu = 2.7 GHz TYP UPC2746TB: fu = 1.5 GHz TYP * HIGH ISOLATION: UPC2745TB: ISOL = 38 dB TYP UPC2746TB: ISOL = 45 dB TYP 20 UPC2746TB TYPICAL PERFORMANCE CURVES GAIN vs. FREQUENCY 25 Gain, GP (dB) 15 UPC2745TB 10 DESCRIPTION NEC's UPC2745TB and UPC2746TB are Silicon MMIC Wideband Amplifiers manufactured using NEC's 20 GHz fT NESATTM III silicon bipolar process. These devices are designed for use as buffer amps in mobile communication applications such as Cellular, PCS, and Cordless handsets, and WLAN transceivers. The UPC2745/46TB are pin compatible and have comparable performance as the larger UPC2745/ 46T, so they are suitable for use as a replacement to help reduce system size. These IC's are housed in a 6 pin super minimold or SOT-363 package. NEC's stringent quality assurance and test procedure ensure the highest reliability and performance. 5 0.5 1.0 1.5 2.0 2.5 3.0 Frequency, f (GHz) ELECTRICAL CHARACTERISTICS (TA = +25 C, ZL = ZS = 50 ) SYMBOLS ICC GP PART NUMBER PACKAGE OUTLINE PARAMETERS AND CONDITIONS Circuit Current (no signal), VCC = 3.0 V VCC = 1.8 V Power Gain, VCC = 3.0 V, f = 0.5 GHz VCC = 3.0 V, f = 1 GHz VCC = 3.0 V, f = 2 GHz VCC = 1.8 V, f = 500 MHz Upper Limit Operating Frequency (3 dB down from the gain at f = 100 MHz) VCC = 3.0 V VCC = 1.8 V Maximum Output Level VCC = 3.0 V, f = 0.5 GHz, PIN = -6 dBm VCC = 3.0 V, f = 1 GHz, PIN = -6 dBm VCC = 3.0 V, f = 2 GHz, PIN = -6 dBm VCC = 1.8 V, f = 500 MHz, PIN = -10 dBm Noise Figure, VCC = 3.0 V, f = 0.5 GHz VCC = 3.0 V, f = 1 GHz VCC = 3.0 V, f = 2 GHz VCC = 1.8 V, f = 500 MHz UNITS mA mA dB dB dB dB GHz GHz dBm dBm dBm dBm dB dB dB dB UPC2745TB S06 MIN TYP MAX 5.0 9.0 7.5 4.5 12 12 11 7 2.7 1.8 -1 -2.5 -3.5 -11 6 5.5 5.7 8.0 10.0 14 UPC2746TB S06 MIN TYP MAX 5.0 16 7.5 4.5 19 18.5 14 1.1 1.5 1.1 0 -1 -8 4.0 4.2 5.0 10.0 21 fU 2.3 PO(SAT) -4 -3 NF 7.5 5.5 California Eastern Laboratories UPC2745TB, UPC2746TB ELECTRICAL CHARACTERISTICS (TA = +25 C, ZL = ZS = 50 ) SYMBOLS RLIN PART NUMBER PACKAGE OUTLINE PARAMETERS AND CONDITIONS Input Return Loss, VCC = 3.0 V, f = 0.5 GHz VCC = 3.0 V, f = 1 GHz VCC = 3.0 V, f = 2 GHz VCC = 1.8 V, f = 0.5 GHz Output Return Loss, VCC = 3.0 V, f = 0.5 GHz VCC = 3.0 V, f = 1 GHz VCC = 3.0 V, f = 2 GHz VCC = 1.8 V, f = 0.5 GHz Isolation, VCC = 3.0 V, f = 0.5 GHz VCC = 3.0 V, f = 1 GHz VCC = 3.0 V, f = 2 GHz VCC = 1.8 V, f = 0.5 GHz 3rd Order Intermodulation Distortion VCC = 3.0 V, POUT = -20 dBm, f1 = 500 MHz, f2 = 502 MHz VCC = 3.0 V, POUT = -20 dBm, f1 = 1000 MHz, f2 = 1002 MHz VCC = 1.8 V, POUT = -20 dBm, f1 = 500 MHz, f2 = 502 MHz UNITS dB dB dB dB dB dB dB dB dB dB dB dB dBc dBc dBc UPC2745TB S06 MIN TYP MAX 8 11 13 14 6.5 5.5 6.5 8.5 6.0 38 33 30 35 -54 -50 -31 UPC2746TB S06 MIN TYP MAX 10 13 10 10 8.5 8.5 9.5 45 38 37 -51 -37 RLOUT 2.5 5.5 ISOL 33 40 IM3 ABSOLUTE MAXIMUM RATINGS1 (TA = 25C) SYMBOLS VCC PIN PT TOP TSTG PARAMETERS Supply Voltage (Pin 5, Pin 8) Input Power Total Power Dissipation2 Operating Temperature Storage Temperature UNITS V dBm mW C C RATINGS 4.0 0 200 -45 to +85 -55 to +150 RECOMMENDED OPERATING CONDITIONS SYMBOL VCC TOP PARAMETER Supply Voltage Operating Temperature UNITS V C MIN 2.7 -40 TYP MAX 3.0 +25 3.3 +85 Notes: 1. Operation in excess of any one of these parameters may result in permanent damage. 2. Mounted on double sided copper clad 50 x 50 x 1.6 mm epoxy glass PWB (TA = +85C). PIN DESCRIPTION Pin No. Pin Name Applied Voltage (V) Description Internal Equivalent Circuit 1 Input Signal input pin. An internal matching circuit, configured with resistors, enables 50 connection over a wide bandwidth. This pin must be coupled to the signal source with a blocking capacitor. 6 4 4 Output Signal output pin. An internal matching circuit, configured with resistors, enables 50 connection over a wide bandwidth. This pin must be coupled to the output load with a blocking capacitor. 2.7 to 3.3 Power supply pin. This pin should be externally equipped with a bypass capacitor to minimize ground impedance. Ground pin. This pin should be connected to system ground with minimum inductance. Ground pattern on the board should be formed as wide as possible. All the ground pins must be connected together with wide ground pattern to minimize impedance difference. 1 6 VCC 2 3 5 GND 0 2 3 5 UPC2745TB, UPC2746TB TYPICAL PERFORMANCE CURVES (TA = 25C) UPC2745TB CURRENT vs. VOLTAGE 10 UPC2745TB CURRENT vs. TEMPERATURE AND VOLTAGE 10 8 8 VCC = 3.0 V Current, ICC (mA) Current, ICC (mA) 6 6 VCC = 1.8 V 4 4 2 2 0 1 2 3 4 0 -40 -20 0 20 40 60 80 100 Voltage, VCC (V) UPC2745TB GAIN AND NOISE FIGURE vs. FREQUENCY AND VOLTAGE 15 VCC = 3.3 V VCC = 3.0 V Temperature, TA (C) UPC2745TB GAIN vs. FREQUENCY AND TEMPERATURE 15 TA = -40C 10 VCC = 1.8 V Noise Figure, NF (dB) VCC = 2.7 V GS Gain, GS (dB) Gain, GS (dB) 5 10 0 VCC = 1.8 V NF 9 8 -5 VCC = 2.7 V VCC = 3.0 V 6 -10 0.1 VCC = 3.3 V 0.3 1.0 3.0 5 7 TA = +85C 10 TA = +25C VCC = 3.0 V 5 0.1 0.3 1.0 3.0 Frequency, f (GHz) Frequency, f (GHz) UPC2745TB ISOLATION vs. FREQUENCY AND VOLTAGE -10 UPC2745TB INPUT RETURN LOSS AND OUTPUT RETURN LOSS vs. FREQUENCY AND VOLTAGE 0 RLOUT VCC = 1.8 V VCC = 3.0 V -20 Input Return Loss, RLIN (dB) Output Return Loss, RLOUT (dB) Isolation, ISOL, (dB) -10 RLIN VCC = 1.8 V VCC = 1.8 V -30 VCC = 3.0 V -20 -40 -50 VCC = 3.0 V -30 -60 0.1 0.3 1.0 3.0 -40 0.1 0.3 1.0 3.0 Frequency, f (GHz) Frequency, f (GHz) UPC2745TB, UPC2746TB TYPICAL PERFORMANCE CURVES (TA = 25C) UPC2745TB OUTPUT POWER vs. INPUT POWER AND VOLTAGE 10 f = 500 MHz VCC = 3.3 V VCC = 3.0 V 10 f = 500 MHz VCC = 3.0 V TA = +85C TA = +25C UPC2745TB OUTPUT POWER vs. INPUT POWER AND TEMPERATURE Output Power, POUT (dBm) 0 Output Power, POUT (dBm) 0 TA = +25C -10 TA = -40C -20 TA = +85C TA = -40C -10 VCC = 2.7 V -20 VCC = 1.8 V -30 -30 -40 -50 -40 -30 -20 -10 0 -40 -50 -40 -30 -20 -10 0 Input Power, PIN (dBm) UPC2745TB OUTPUT POWER vs. INPUT POWER AND VOLTAGE 10 f = 1.0 GHz VCC = 3.3 V VCC = 3.0 V 10 Input Power, PIN (dBm) UPC2745TB OUTPUT POWER vs. INPUT POWER AND VOLTAGE f = 2.0 GHz VCC = 3.0 V Output Power, POUT (dBm) Output Power, POUT (dBm) 0 0 VCC = 3.3 V -10 VCC = 2.7 V -10 VCC = 2.7 V -20 -20 VCC = 1.8 V -30 VCC = 1.8 V -30 -40 -50 -40 -30 -20 -10 0 -40 -50 -40 -30 -20 -10 0 Input Power, PIN (dBm) Input Power, PIN (dBm) UPC2745TB SATURATED OUTPUT POWER vs. FREQUENCY AND VOLTAGE 5 UPC2745TB 3RD ORDER INTERMODULATION DISTORTION vs. OUTPUT POWER AND VOLTAGE -10 Saturated Output Power, PSAT (dBm) VCC = 3.0 V 0 VCC = 3.3 V 3rd Order Intermodulation Distortion, IM3 (dBc) PIN = -6 dBm f1 = 500 MHz f2 = 502 MHz -20 -30 VCC = 1.8 V VCC = 2.7 V -5 VCC = 2.7 V -40 VCC = 3.0 V VCC = 1.8 V -10 -50 VCC = 3.3 V -15 0.1 .03 1.0 3.0 -60 -30 -25 -20 -15 -10 -5 Frequency, f (GHz) Output Power of Each Tone, POUT(each) (dBm) UPC2745TB, UPC2746TB TYPICAL PERFORMANCE CURVES (TA = 25C) UPC2746TB CURRENT vs. VOLTAGE 10 UPC2746TB CURRENT vs. TEMPERATURE AND VOLTAGE 10 8 8 VCC = 3.0 V Current, ICC (mA) 6 Current, ICC (mA) 6 VCC = 1.8 V 4 4 2 2 0 1 2 3 4 0 -40 -20 0 20 40 60 80 100 Voltage, VCC (V) UPC2746TB GAIN AND NOISE FIGURE vs. FREQUENCY AND VOLTAGE 22 20 18 VCC = 3.3 V 22 21 20 Temperature, TA (C) UPC2746TB GAIN vs. FREQUENCY AND TEMPERATURE TA = -40C Noise Figure, NF (dB) 3.0 V GS 19 Gain, GS (dB) Gain, GS (dB) 16 14 12 10 8 6 18 17 16 15 14 13 +85C +25C 2.7 V 7 VCC = 1.8 V NF 5 4 0.1 2.7 V-3.3 V 0.3 1.0 3.0 VCC = 3.0 V 3 12 0.1 0.3 1.0 3.0 Frequency, f (GHz) UPC2746TB ISOLATION vs. FREQUENCY AND VOLTAGE 10 Frequency, f (GHz) UPC2746TB INPUT RETURN LOSS AND OUTPUT RETURN LOSS vs. FREQUENCY AND VOLTAGE 10 0 Input Return Loss, RLIN (dB) Output Return Loss, RLOUT (dB) Isolation, ISOL, (dB) 0 VCC = 3.0 V VCC = 1.8 V RLOUT -10 RLIN -20 -40 VCC = 1.8 V -60 VCC = 3.0 V -20 VCC = 3.0 V VCC = 1.8 V -80 0.1 0.3 1.0 3.0 -30 0.1 0.3 1.0 3.0 Frequency, f (GHz) Frequency, f (GHz) UPC2745TB, UPC2746TB TYPICAL PERFORMANCE CURVES (TA = 25C) UPC2746TB OUTPUT POWER vs. INPUT POWER AND VOLTAGE 10 f = 500 MHz VCC = 3.3 V VCC = 3.0 V 10 f = 1.0 GHz VCC = 3.3 V VCC = 3.0 V UPC2746TB OUTPUT POWER vs. INPUT POWER AND VOLTAGE Output Power, POUT (dBm) Output Power, POUT (dBm) 0 VCC = 2.7 V -10 0 VCC = 2.7 V -10 VCC = 1.8 V -20 VCC = 1.8 V -20 -30 -30 -40 -50 -40 -30 -20 -10 0 -40 -50 -40 -30 -20 -10 0 Input Power, PIN (dBm) UPC2746TB OUTPUT POWER vs. INPUT POWER AND TEMPERATURE 10 f = 500 MHz VCC = 3.0 V TA = +85C 10 Input Power, PIN (dBm) UPC2746TB OUTPUT POWER vs. INPUT POWER AND TEMPERATURE f = 1.0 GHz VCC = 3.0 V TA = +85C Output Power, POUT (dBm) Output Power, POUT (dBm) 0 +25C 0 +25C -10 +40C +85C -20 +40C +25C -10 +40C +85C -20 +40C +25C -30 -30 -40 -50 -40 -30 -20 -10 0 -40 -50 -40 -30 -20 -10 0 Input Power, PIN (dBm) UPC2746TB SATURATED OUTPUT POWER vs. FREQUENCY AND VOLTAGE 10 Input Power, PIN (dBm) UPC2746TB 3RD ORDER INTERMODULATION DISTORTION vs. OUTPUT POWER AND VOLTAGE -10 Saturated Output Power, PSAT (dBm) 5 VCC = 3.3 V 3.0 V 0 3rd Order Intermodulation Distortion, IM3 (dBc) VCC = 2.7 to 3.3 V PIN = -6 dBm f1 = 500 MHz f2 = 502 MHz -20 -30 VCC = 1.8 V VCC = 3.3 V -5 2.7 V 1.8 V -40 VCC = 3.0 V -50 VCC = 2.7 V -60 -30 -10 VCC = 1.8 V PIN = 10 dBm -15 0.1 0.3 1.0 3.0 -25 -20 -15 -10 -5 0 Frequency, f (GHz) Output Power of Each Tone, POUT(each) (dBm) UPC2745TB, UPC2746TB TYPICAL SCATTERING PARAMETERS (TA = 25C) UPC2745TB VCC = 3 V, ICC = 8.4 mA FREQUENCY (MHz) 100.00 200.00 300.00 400.00 500.00 600.00 700.00 800.00 900.00 1000.00 1100.00 1200.00 1300.00 1400.00 1500.00 1600.00 1700.00 1800.00 1900.00 2000.00 2100.00 2200.00 2300.00 2400.00 2500.00 2600.00 2700.00 2800.00 2900.00 3000.00 MAG 0.318 0.325 0.346 0.341 0.339 0.326 0.311 0.312 0.325 0.356 0.382 0.416 0.416 0.415 0.393 0.386 0.373 0.369 0.366 0.353 0.344 0.313 0.293 0.267 0.262 0.253 0.253 0.248 0.237 0.230 S11 ANG -3.90 -5.90 -7.20 -8.90 -10.80 -13.90 -20.80 -25.80 -31.90 -32.80 -32.70 -31.20 -30.90 -30.80 -30.30 -31.30 -30.50 -31.60 -29.60 -30.00 -28.60 -29.50 -31.60 -35.10 -39.90 -40.30 -40.90 -35.50 -30.20 -20.60 MAG 4.055 4.030 3.985 3.916 3.842 3.775 3.668 3.594 3.525 3.497 3.503 3.542 3.569 3.520 3.501 3.429 3.355 3.303 3.229 3.179 3.081 2.999 2.911 2.802 2.695 2.598 2.496 2.400 2.306 2.209 S21 ANG -17.20 -35.50 -52.50 -70.70 -87.30 -104.70 -121.50 -138.10 -154.20 -170.30 173.70 156.70 139.10 121.40 103.70 86.80 69.70 52.70 35.80 18.80 1.50 -15.40 -32.50 -49.40 -66.00 -82.30 -98.60 -114.60 -130.20 -146.60 MAG 0.003 0.006 0.009 0.012 0.013 0.015 0.017 0.018 0.020 0.019 0.020 0.022 0.023 0.025 0.025 0.025 0.026 0.028 0.028 0.030 0.031 0.031 0.033 0.034 0.036 0.036 0.034 0.036 0.032 0.031 S12 ANG 62.90 54.20 42.00 29.40 11.80 1.60 -11.90 -24.20 -38.40 -45.90 -54.30 -70.50 -78.40 -88.40 -102.90 -114.10 -125.70 -130.30 -142.50 -152.40 -164.90 -177.10 171.10 160.80 148.30 134.80 121.40 106.50 92.80 83.60 MAG 0.593 0.584 0.579 0.562 0.546 0.527 0.515 0.511 0.512 0.523 0.525 0.530 0.518 0.509 0.492 0.481 0.474 0.468 0.457 0.440 0.416 0.389 0.365 0.346 0.331 0.321 0.311 0.299 0.279 0.254 S22 ANG -6.60 -12.10 -16.50 -20.60 -23.00 -26.20 -29.90 -32.40 -34.80 -35.80 -36.30 -36.80 -37.50 -38.80 -40.50 -42.50 -43.80 -44.80 -44.80 -45.00 -45.00 -45.40 -46.40 -47.40 -48.20 -48.30 -47.60 -46.70 -46.30 -46.20 20.94 11.68 8.29 6.26 6.29 5.50 5.46 5.36 4.91 4.93 4.56 4.14 3.92 3.53 3.68 3.78 3.68 3.50 3.63 3.62 3.85 4.23 4.23 4.40 4.45 4.54 5.08 5.01 5.88 6.49 K UPC2746TB VCC = 3 V, ICC = 7.7 mA FREQUENCY (MHz) 100.00 200.00 300.00 400.00 500.00 600.00 700.00 800.00 900.00 1000.00 1100.00 1200.00 1300.00 1400.00 1500.00 1600.00 1700.00 1800.00 1900.00 2000.00 MAG 0.146 0.130 0.117 0.128 0.139 0.145 0.135 0.131 0.119 0.142 0.170 0.219 0.245 0.268 0.270 0.268 0.258 0.251 0.249 0.240 S11 ANG 165.00 141.70 117.90 100.80 90.80 83.10 77.00 67.40 49.30 30.40 18.10 10.60 7.40 3.10 1.50 -3.90 -7.80 -14.30 -16.70 -20.50 MAG 6.443 6.594 6.623 6.522 6.613 6.481 6.424 6.353 6.234 6.137 5.992 5.972 5.867 5.679 5.582 5.380 5.122 4.880 4.634 4.475 S21 ANG -19.40 -38.70 -58.10 -77.55 -96.90 -116.10 -135.10 -153.60 -172.10 169.60 151.10 133.30 115.10 97.00 79.10 61.80 44.50 27.90 11.70 -4.40 MAG 0.001 0.003 0.004 0.005 0.008 0.009 0.010 0.011 0.014 0.015 0.016 0.019 0.019 0.022 0.021 0.022 0.024 0.024 0.025 0.026 S12 ANG 77.00 51.80 47.70 51.10 33.10 21.70 14.70 -0.40 -10.50 -24.20 -28.70 -48.00 -63.40 -72.20 -86.90 -99.60 -110.70 -122.90 -135.30 -146.00 MAG 0.403 0.406 0.418 0.417 0.424 0.422 0.426 0.433 0.442 0.455 0.455 0.453 0.433 0.409 0.375 0.349 0.318 0.294 0.268 0.248 S22 ANG -5.30 -8.60 -11.10 -14.00 -16.20 -19.40 -23.80 -27.70 -32.10 -34.70 -37.50 -39.70 -42.70 -45.50 -48.30 -49.90 -50.00 -49.20 -45.40 -40.50 108.63 20.56 16.33 12.34 8.14 7.22 6.52 5.63 4.80 4.44 4.02 3.49 3.40 3.16 3.38 3.36 3.42 3.67 3.73 3.91 K UPC2745TB, UPC2746TB SYSTEM APPLICATION EXAMPLE PCS RX DEMO I Q SW PLL PLL I 0 TX PA 90 Q = UPC2745TB, UPC2746TB OUTLINE DIMENSIONS (Units in mm) PACKAGE OUTLINE S06 2.10.1 1.250.1 PIN CONNECTIONS (Top View) 3 (Bottom View) 4 5 6 4 5 6 3 2 1 2.00.2 0.65 3 1.3 0.65 2 4 0.2 +0.1 -0 2 1 5 1 6 DOT ON BACK SIDE 0.9 0.1 0.7 Marking is an example of UPC2745TB 1. Input 4. Output 2. GND 5. GND 3. GND 6. VCC 0 ~0.1 +0.1 0.15 -0.5 TEST CIRCUIT VCC 1000 pF ORDERING INFORMATION PART NUMBER UPC2745TB-E3-A UPC2746TB-E3-A MARKING C1Q C1R QTY 3 K/reel 3 K/reel Note: Embossed tape, 8 mm wide. Pins 1, 2, and 3 face perforated side of tape. 6 50 IN 1000 pF 1 4 50 OUT 1000 pF 2, 3, 5 Life Support Applications These NEC products are not intended for use in life support devices, appliances, or systems where the malfunction of these products can reasonably be expected to result in personal injury. The customers of CEL using or selling these products for use in such applications do so at their own risk and agree to fully indemnify CEL for all damages resulting from such improper use or sale. EXCLUSIVE NORTH AMERICAN AGENT FOR RF, MICROWAVE & OPTOELECTRONIC SEMICONDUCTORS CALIFORNIA EASTERN LABORATORIES * Headquarters * 4590 Patrick Henry Drive * Santa Clara, CA 95054-1817 * (408) 988-3500 * Telex 34-6393 * FAX (408) 988-0279 24-Hour Fax-On-Demand: 800-390-3232 (U.S. and Canada only) * Internet: http://WWW.CEL.COM 06/19/2001 DATA SUBJECT TO CHANGE WITHOUT NOTICE C1Q 4590 Patrick Henry Drive Santa Clara, CA 95054-1817 Telephone: (408) 919-2500 Facsimile: (408) 988-0279 Subject: Compliance with EU Directives CEL certifies, to its knowledge, that semiconductor and laser products detailed below are compliant with the requirements of European Union (EU) Directive 2002/95/EC Restriction on Use of Hazardous Substances in electrical and electronic equipment (RoHS) and the requirements of EU Directive 2003/11/EC Restriction on Penta and Octa BDE. CEL Pb-free products have the same base part number with a suffix added. The suffix -A indicates that the device is Pb-free. The -AZ suffix is used to designate devices containing Pb which are exempted from the requirement of RoHS directive (*). In all cases the devices have Pb-free terminals. All devices with these suffixes meet the requirements of the RoHS directive. This status is based on CEL's understanding of the EU Directives and knowledge of the materials that go into its products as of the date of disclosure of this information. Restricted Substance per RoHS Lead (Pb) Mercury Cadmium Hexavalent Chromium PBB PBDE Concentration Limit per RoHS (values are not yet fixed) < 1000 PPM < 1000 PPM < 100 PPM < 1000 PPM < 1000 PPM < 1000 PPM Concentration contained in CEL devices -A Not Detected Not Detected Not Detected Not Detected Not Detected Not Detected -AZ (*) If you should have any additional questions regarding our devices and compliance to environmental standards, please do not hesitate to contact your local representative. Important Information and Disclaimer: Information provided by CEL on its website or in other communications concerting the substance content of its products represents knowledge and belief as of the date that it is provided. CEL bases its knowledge and belief on information provided by third parties and makes no representation or warranty as to the accuracy of such information. Efforts are underway to better integrate information from third parties. CEL has taken and continues to take reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on incoming materials and chemicals. CEL and CEL suppliers consider certain information to be proprietary, and thus CAS numbers and other limited information may not be available for release. In no event shall CEL's liability arising out of such information exceed the total purchase price of the CEL part(s) at issue sold by CEL to customer on an annual basis. See CEL Terms and Conditions for additional clarification of warranties and liability. |
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