WA04P WALSIN | Alldatasheet
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Technical content
Page 1 of 6 ASC_WA04P_V14 Feb. 2012 WA04P ππ ππ type chip attenuator 50Ω , 0dB, 0.5dB to 20dB Size 1.0 x 1.0 mm
Page 2 of 6 ASC_WA04P_V14 Feb. 2012 FEATURE 1. Unbalanced π type attenuator circuit in one chip (1.0mm x 1.0mm) 2. Mounting occupation area reduction 3. Mounting assembly cost saving APPLICATION
- Attenuation, level control, impedance matching of high frequency signals of communication equipment;
- Mobile phone (GSM, CDMA, PDC, etc,…)
- Telecom
DESCRIPTION
The attenuator is constructed in a high grade ceramic body (aluminum oxide). Internal circuit is applied to the top surface of the substrate, and its design determines the required attenuation value. The attenuation layer is covered with a protective coating and a rectangular marker indicates input pin1 as shown in circuit configuration. Fig 1. Outline of WA04P Chip attenuator CIRCUIT CONFIGURATION
Page 3 of 6 ASC_WA04P_V14 Feb. 2012 QUICK REFERENCE DATA Item General Specification Series No. WA04P(Convex type) Size 1.0 x 1.0 mm Attenuation Range 0dB, 0.5 dB ~ 20dB Attenuation Tolerance 0dB 0.5 dB 1dB ~ 5dB 6dB ~ 10dB 11dB ~ 13dB 14dB 15 ~ 16dB 17 ~ 19dB 20dB ±0.1dB ±0.3dB ±0.4dB ±0.8dB ±1.0dB ±1.5dB ±2.0dB ±2.5dB Characteristic impedance 50 Ω Rated power at T amb =70 °C 0.1 W / package Limiting voltage (DC) 50V Frequency range (DC) Max. 3GHz VSWR (Voltage Standing Wave Ratio) Max. 1.2 Number of Resistors 3 resistors Number of Terminals 4 terminals category temperature range -40 ~ +125 DIMENSIONS(mm) WA04P L 1.00 ± 0.10 W 1.00 +0.10 / -0 T 0.35 ± 0.10 P 0.65 ± 0.10 A 0.33 ± 0.10 Ta 0.15 ± 0.10 Tb 0.25 ± 0.10 MARKING
Page 4 of 6 ASC_WA04P_V14 Feb. 2012 code 0 X 1 Y 2 3 4 5 6 7 8 9 A B C D E F G H J K L dB 0 0 1 1 2 3 4 5 6 7 8 9 1 FUNCTIONAL DESCRIPTION Product characterization Standard attenuation values include 0, 0.5dB to 20dB with a tolerance as defined in quick reference data. CATALOGUE NUMBERS AND PACKAGING The attenuators have a catalogue number starting with . WA04 P 001 X B T L Size code WA04 : 0402 per element Type code P : convex, π type attenuator Attenuation code 000 = 0dB 001 = 1dB 005 = 5dB 010 = 10dB 020 = 20dB R05 = 0.5dB R15 = 1.5dB Impedance X : 50 Ω Tolerance A : ±0.1dB B : ±0.3dB C : ±0.4dB D : ±0.8dB E : ±1.0dB F : ±1.5dB G : ±2.0dB H : ±2.5dB P : - Packaging code T : 7” reel taped Termination code L = Sn base (lead free) Packaging : 8mm width paper taping 10,000pcs per reel. SOLDERING CONDITION The robust construction of chip resistors allows them to be completely immersed in a solder bath of 260 °C for 10 seconds. Therefore, it is possible to mount Surface Mount Resistors on one side of a PCB and other discrete components on the reverse (mixed PCBs). Surface Mount Resistors are tested for solderability at 235°C during 2 seconds. The test condition for no leaching is 260 °C for 30 seconds. Typical examples of soldering processes that provide reliable joints without any damage are given in Fig 3. Fig 3. Infrared soldering profile
Page 5 of 6 ASC_WA04P_V14 Feb. 2012 TEST AND REQUIREMENTS (JIS C 5201-1 : 1998) TEST PROCEDURE REQUIREMENT Characteristic Impedance Measuring circuit 50 Ω Insulation resistance Clause 4.6 Apply the 50VDC for 1minute At least 100M Ω Solderability Clause 4.17 Un-mounted chips completely immersed for 2±0.5 second in a SAC solder bath at 235℃±5 ℃ good tinning (>95% covered) no visible damage Resistance to soldering heat(R.S.H) Clause 4.18 Un-mounted chips completely immersed for 10 ±1 second in a SAC solder bath at 260 ℃±5ºC no visible damage Attenuation 0.5~ 2dB : within ±0.1dB Attenuation 3~ 5dB : within ±0.2dB Attenuation 6~ 20dB : within ±0.3dB Temperature cycling Clause 4.19 30 minutes at -55 °C ±3°C, 2~3 minutes at 20° C+5° C-1° C, 30 minutes at +125°C ±3°C, 2~3 minutes at 20° C+5° C-1° C, total 5 continuous cycles no visible damage Attenuation 0.5~ 2dB : within ±0.1dB Attenuation 3~ 5dB : within ±0.2dB Attenuation 6~ 20dB : within ±0.3dB Load life (endurance) Clause 4.25 1000 +48/-0 hours, loaded with RCWV or Vmax in chambe r controller 85 ±2ºC, 1.5 hours on and 0.5 hours off no visible damage Attenuation 0.5~ 2dB : within ±0.1dB Attenuation 3~ 5dB : within ±0.2dB Attenuation 6~ 20dB : within ±0.3dB Dielectric Withstand Voltage Clause 4.7 Apply the maximum overload voltage (AC) for 1 minute No breakdown or flashover
Page 6 of 6 ASC_WA04P_V14 Feb. 2012 PACKAGING Paper Tape specifications (unit :mm) A0 B0 W F E P1 P2 P0 Ø D0 T 050 . 1+ 0.45 ±0.10 Reel dimensions Symbol A B C D