Product Overview
The ASC_WA04/06 series offers general-purpose chip resistor arrays designed for reduced equipment size and lower assembly costs. These RoHS compliant and lead-free products are constructed with a high-grade ceramic body and feature internal metal electrodes connected by a laser-trimmed resistive paste. They are suitable for various consumer electronics, EDP, and telecom applications, providing high component and equipment reliability.
Product Attributes
- Brand: ASC (implied by ASC_WA04/06)
- Certifications: RoHS compliant, Lead free
- Material: High grade ceramic body (aluminum oxide)
Technical Specifications
| Series No. | Size | Resistance Tolerance | Resistance Range | TCR (ppm/C) | Max. dissipation at Tamb=70C | Max. Operation Voltage (DC or RMS) | Max. overload voltage | Climatic category |
| WA04Y(Convex) | 0402x2 (1005x2) | 5% | 3 ~ 1M, Jumper | 10 R 1M: 300 R<10, R>1M: 400 | 1/16 W | 25V | 50V | 55/155/56 |
| WA04X(Convex) | 0402x4 (1005x4) | 1% | 10 ~ 1M | 200 | 1/16 W | 50V | 100V | 55/155/56 |
| WA04X(Convex) | 0402x4 (1005x4) | 5% | 3 ~ 1M | - | 1/16 W | 50V | 100V | 55/155/56 |
| WA06X(Convex) | 0603x4 (1608x4) | 1% | 10 ~ 1M | 200 | 1/10 W | 50V | 100V | 55/155/56 |
| WA06X(Convex) | 0603x4 (1608x4) | 5% | 1 ~ 10M | -300~+500 | 1/10 W | 50V | 100V | 55/155/56 |
| WA06W(Convex) | 0602x8 (1605x8) | 1% | Jumper, 10 ~ 100K | 100 | 1/16 W | 50V | 100V | 55/155/56 |
| WA06W(Convex) | 0602x8 (1605x8) | 5% | 10 ~ 1M | - | 1/16 W | 50V | 100V | 55/155/56 |
| WA06T(Concave) | 0603x4 (1608x4) | 1% | 10 ~ 1M | 200 | 1/10 W | 50V | 100V | 55/155/56 |
| WA06T(Concave) | 0603x4 (1608x4) | 5% | Jumper, 10 ~ 1M | -300~+500 | 1/10 W | 50V | 100V | 55/155/56 |
Dimensions (unit : mm)
WA04Y
L: 1.00 0.10, W: 1.00 0.10, T: 0.35 0.10, P: 0.65 0.10, A: 0.34 0.10, Ta: 0.20 0.15, Tb: 0.25 0.17
WA04X
L: 2.00 0.10, W: 1.00 0.10, T: 0.45 0.10, P: 0.50 0.05, A: 0.40 0.10, B: 0.20 0.10, C: 0.30 0.05, G: 0.25 0.10
WA06X
L: 3.20 0.10, W: 1.60 0.10, T: 0.50 0.10, P: 0.80 0.10, A: 0.60 0.10, B: 0.30 0.10, C: 0.40 0.05, G: 0.30 0.20
WA06W
L: 4.00 0.20, W: 1.60 0.15, T: 0.45 0.10, B: 0.30 0.20, G: 0.30 0.20, D: 0.20 0.10, P: 0.50 0.20, H1: 0.40 0.20, H2: 0.30 0.10
WA06T
L: 3.20+0.20/-0.10, W: 1.60+0.20/-0.10, T: 0.60 0.10, P: 0.80 0.10, A: 0.60 0.15, B: 0.35 0.15, C: 0.50 0.15, G: 0.50 0.15
Marking
3-digits marking for E24 series 1% ,5% products. For values up to 9.1 the R is used as a decimal point. For values of 10.0 or greater the first 2 digits apply to the resistance value and the third indicates the number of zeros to follow. No marking for WA04Y chip resistors array and E96 series resistance.
Functional Description
Standard values of nominal resistance are taken from the E24 series for 5% tolerance resistors and E24/E96 series for 1% tolerance resistors, in accordance with IEC publication 60063. Derating is based on operating temperature as shown in Fig.3.
Mounting and Soldering
Suitable for automatic placement systems on ceramic substrates and printed-circuit boards (PCBs). End terminations guarantee reliable contact. Robust construction allows immersion in solder baths up to 260C for 10 seconds. Tested for solderability at 235C for 2 seconds. No leaching at 260C for 30 seconds. Typical soldering profiles are shown in Fig 4.
Test and Requirements
| Item | Requirement | Test Procedure | Result |
| DC resistance | Within the specified tolerance | Clause 4.5 | < 50m |
| Temperature Coefficient of Resistance (T.C.R) | Natural resistance change per change in degree centigrade. | Clause 4.8 | Refer to QUICK REFERENCE DATA |
| Short time overload (S.T.O.L) | Permanent resistance change after a 5second application of a voltage 2.5 times RCWV or the maximum overload voltage specified in the above list, whichever is less. | Clause 4.13 | R/R max. (2%+0.10) |
| Resistance to soldering heat(R.S.H) | Un-mounted chips completely immersed for 101second in a SAC solder bath at 2605C | Clause 4.18 | R/R max. (1%+0.05) no visible damage |
| Solderability | Un-mounted chips completely immersed for 20.5 second in a SAC solder bath at 2355 | Clause 4.17 | good tinning (>95% covered) no visible damage |
| Temperature cycling | 30 minutes at -55C3C, 2~3 minutes at 20C+5C-1C, 30 minutes at +155C3C, 2~3 minutes at 20C+5C-1C, total 5 continuous cycles | Clause 4.19 | R/R max. (1%+0.05) no visible damage |
| Load life (endurance) | 1000 +48/-0 hours, loaded with RCWV or Vmax in chamber controller 702C, 1.5 hours on and 0.5 hours off | Clause 4.25 | R/R max.(3%+0.10) For 10R<1M ; R/R max.(5%+0.10) For R<10, R1M |
| Load life in Humidity | 1000 +48/-0 hours, loaded with RCWV or Vmax in humidity chamber controller at 40C2C and 90~95% relative humidity, 1.5hours on and 0.5 hours off | Clause 4.24 | R/R max.(3%+0.10) For 10R<1M ; R/R max.(5%+0.10) For R<10, R1M |
| Adhesion | Pressurizing force: 5N, Test time: 101sec. | Clause 4.32 | No remarkable damage or removal of the terminations. |
| Insulation Resistance | Apply the maximum overload voltage (DC) for 1minute | Clause 4.6 | R10G |
| Dielectric Withstand Voltage | Apply the maximum overload voltage (AC) for 1 minute | Clause 4.7 | No breakdown or flashover |
Test Condition for Jumper (0 )
| Item | WA04Y | WA04X | WA06X | WA06W | WA06T |
| Power Rating At 70C | 1/16W | 1/16W | 1/10W | 1/16W | 1/10W |
| Resistance | MAX.50m | MAX.50m | MAX.50m | MAX.50m | MAX.50m |
| Rated Current | 1A | 1A | 1A | 2A | 1A |
| Peak Current | 1.5A | 1.5A | 3A | 3A | 3A |
| Operating Temperature | -55~155C | -55~155C | -55~155C | -55~155C | -55~155C |
Catalogue Numbers
Format: WA X XXXX X X L
Size code: 06: 0603 (1608), 04: 0402(1005)
Type code: X : x 4, Convex; Y : x 2, Convex; W :x 8, Convex; T : x 4, Concave
Resistance code: 5% E24 : 2 significant digits followed by no. of zeros and a blank (e.g., 4.7 =4R7_, 10 =100_, 220 =221_, Jumper =000_). 1%, E24+E96: 3 significant digits followed by no. of zeros (e.g., 100 =1000, 37.4K =3742)
Tolerance: F: 1%, J : 5%, P : Jumper
Packaging code: T : 7 Reel taping, B : Bulk
Termination code: L = Sn base (lead free)
Packaging
WA06X, WA06T
1. Reeled tape packaging: 8mm width paper taping, 5000pcs per reel.
2. Bulk packaging: 5000pcs per polybag
WA06W
1. Reeled tape packaging: 12mm width paper taping, 5000pcs per reel.
2. Bulk packaging: 5000pcs per polybag
WA04X, WA04Y
1. Reeled tape packaging: 8mm width paper taping, 10,000pcs per reel.
Paper Tape Specifications (unit :mm)
WA06X,WA06T
A: 3.600.20, B: 2.000.20, W: 8.000.30, F: 3.500.05, E: 1.750.10, P1: 4.000.10, P0: Max. 1.0, D: Max. 1.0, T: Max. 0.6
WA04X
A: 2.200.20, B: 1.200.20, W: 8.000.30, F: 3.500.05, E: 1.750.10, P1: Max. 0.6, P0: Max. 0.6, D: Max. 1.0, T: Max. 0.6
WA04Y
A: 1.150.10, B: 1.150.10, W: 8.000.30, F: 3.500.05, E: 1.750.10, P1: Max. 0.6, P0: Max. 0.6, D: Max. 1.0, T: Max. 0.6
WA06W
A: 2.0, B: 0.0, W: 12.000.10, F: 5.500.05, E: 1.750.10, P1: 20.0, P0: 8.0, D: 1.5, T: 0.8
2410121521_Walsin-WA06X333JTL_C396852.pdf
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