Product Overview
The ASC WA04/06 series offers general-purpose chip resistor arrays designed for high-density mounting. These resistors feature small size, light weight, and reduced final equipment size, contributing to lower assembly costs and higher reliability. They are RoHS compliant and lead-free. Applications include consumer electrical equipment, EDP, computer applications, and telecom. The resistors are constructed with a high-grade ceramic body and a resistive paste trimmed by laser, protected by a coating and Tin-free end terminations for ease of soldering.
Product Attributes
- Brand: ASC
- Certifications: RoHS compliant
- Material: High grade ceramic body (aluminum oxide)
- Termination: Tin (lead free) alloy
Technical Specifications
| Series No. | Size | Resistance Tolerance | Resistance Range | Max. dissipation at Tamb=70C | Max. Operation Voltage (DC or RMS) | Max. overload voltage | Climatic category |
| WA04Y(Convex) | 0402x2 (1005x2) | 5%, 1% | 3 ~ 1M, Jumper 10 ~ 1M | 1/16 W | 25V | 50V | 55/155/56 |
| WA04X(Convex) | 0402x4 (1005x4) | 5%, 1% | 3 ~ 1M Jumper 10 ~ 1M | 1/16 W | 50V | 100V | 55/155/56 |
| WA06X(Convex) | 0603x4 (1608x4) | 5%, 1% | 1 ~ 10M Jumper, 10 ~ 100K | 1/10 W | 50V | 100V | 55/155/56 |
| WA06W(Convex) | 0602x8 (1605x8) | 5%, 1% | 10 ~ 1M, Jumper, 10 ~ 1M | 1/16 W | 50V | 100V | 55/155/56 |
| WA06T(Concave) | 0603x4 (1608x4) | 5%, 1% | 10 ~ 1M, Jumper | 1/10 W | 50V | 100V | 55/155/56 |
Dimensions (unit : mm)
| Series | L | W | T | P | A | Ta | Tb | B | C | D | G | H1 | H2 |
| WA04Y | 1.00 0.10 | 1.00 0.10 | 0.35 0.10 | 0.65 0.10 | 0.34 0.10 | 0.20 0.15 | 0.25 0.17 | ||||||
| WA04X | 2.00 0.10 | 1.00 0.10 | 0.45 0.10 | 0.50 0.05 | 0.40 0.10 | 0.20 0.10 | 0.30 0.05 | 0.25 0.10 | |||||
| WA06X | 3.20 0.10 | 1.60 0.10 | 0.50 0.10 | 0.80 0.10 | 0.60 0.10 | 0.30 0.10 | 0.40 0.10 | 0.30 0.20 | |||||
| WA06W | 4.00 0.20 | 1.60 0.15 | 0.45 0.10 | 0.50 0.20 | 0.30 0.20 | 0.20 0.10 | 0.30 0.20 | 0.40 0.20 | 0.30 0.10 | ||||
| WA06T | 3.20+0.20/-0.10 | 1.60+0.20/-0.10 | 0.60 0.10 | 0.80 0.10 | 0.60 0.15 | 0.35 0.15 | 0.50 0.15 | 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. Example: 4.7 = 4R7, 10 = 100, 100 = 101, 6800 = 682, 47000 = 473. No marking for WA04Y chip resistors array and E96 series resistance.
Test and Requirements
| Item | Requirement | Test Procedure | R/R max. | Limit |
| Resistor Jumper 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. (R2-R1)/R1/(t2-t1) x 10^6 (ppm/C) t1 : 20C+5C-1C | 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 | (2%+0.10) | < 50m |
| Resistance to soldering heat(R.S.H) | Un-mounted chips completely immersed for 101second in a SAC solder bath at 2605C | Clause 4.18 | (1%+0.05) | < 50m, 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 | (1%+0.05) | < 50m, 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 | (3%+0.10) For 10R<1M ; (5%+0.10) For R<10, R1M | < 50m |
| 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 | (3%+0.10) For 10R<1M ; (5%+0.10) For R<10, R1M | < 50m |
| 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
The resistors have a catalogue number starting with . 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_)
Resistance code (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.
2410121521_Walsin-WA06X392JTL_C396854.pdf
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