Product Overview
The ASC WA04/06 series offers general-purpose chip resistor arrays designed for surface mounting. These compact and lightweight components are ideal for reducing final equipment size and lowering assembly costs, while enhancing reliability. They are RoHS compliant and lead-free. The resistors are constructed with a high-grade ceramic body and feature a resistive paste trimmed by laser. Applications include consumer electronics, EDP, and telecommunications.
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 | TCR (ppm/C) | 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 | 10 R 1M: 300; R<10, R>1M: 400 | 1/16 W | 25V | 50V | 55/155/56 |
| WA04X(Convex) | 0402x4 (1005x4) | 5%, 1% | 3 ~ 1M Jumper 10 ~ 1M | 200 | 1/16 W | 50V | 100V | 55/155/56 |
| WA06X(Convex) | 0603x4 (1608x4) | 5%, 1% | 1 ~ 10M Jumper, 10 ~ 100K | 200; -300~+500 | 1/10 W | 50V | 100V | 55/155/56 |
| WA06W(Convex) | 0602x8 (1605x8) | 5%, 1% | 10 ~ 1M, Jumper | 100 | 1/16 W | 50V | 100V | 55/155/56 |
| WA06T(Concave) | 0603x4 (1608x4) | 5%, 1% | 10 ~ 1M, Jumper | 200; -300~+500 | 1/10 W | 50V | 100V | 55/155/56 |
Dimensions
| Series | L (mm) | W (mm) | T (mm) | P (mm) | A (mm) | Ta (mm) | Tb (mm) | B (mm) | C (mm) | G (mm) | D (mm) | H1 (mm) | H2 (mm) |
| 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 | - | 0.30 0.20 | 0.20 0.10 | 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. 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 and E24/E96 series for 1% tolerance, in accordance with IEC publication 60063.
Derating
The power dissipation capability of the resistor depends on the operating temperature. Refer to Figure 3 for maximum dissipation as a function of ambient temperature.
Mounting and Soldering
Suitable for automatic placement systems on ceramic substrates and PCBs. End terminations ensure reliable soldering. Can withstand immersion in a solder bath of 260C for 10 seconds. Tested for solderability at 235C for 2 seconds. No leaching at 260C for 30 seconds. Refer to Fig 4 for typical infrared soldering profiles.
Test and Requirements
| Test Item | Procedure | Requirement |
| DC Resistance | Clause 4.5 | Within specified tolerance; Jumper < 50m |
| Temperature Coefficient of Resistance (T.C.R) | Clause 4.8 | Refer to QUICK REFERENCE DATA |
| Short Time Overload (S.T.O.L) | Clause 4.13 | R/R max. (2%+0.10); < 50m |
| Resistance to Soldering Heat (R.S.H) | Clause 4.18 | R/R max. (1%+0.05); no visible damage; < 50m |
| Solderability | Clause 4.17 | Good tinning (>95% covered); no visible damage |
| Temperature Cycling | Clause 4.19 | R/R max. (1%+0.05); no visible damage |
| Load Life (Endurance) | Clause 4.25 | R/R max. (3%+0.10) for 10R<1M; R/R max.(5%+0.10) for R<10, R1M; < 50m |
| Load Life in Humidity | Clause 4.24 | R/R max. (3%+0.10) for 10R<1M; R/R max.(5%+0.10) for R<10, R1M; < 50m |
| Adhesion | Clause 4.32 | No remarkable damage or removal of terminations |
| Insulation Resistance | Clause 4.6 | R10G |
| Dielectric Withstand Voltage | 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), 04 (0402)
- Type code: X (x4 Convex), Y (x2 Convex), W (x8 Convex), T (x4 Concave)
- Resistance code: 5% E24 (e.g., 4R7_, 100, 101, 682, 473), Jumper (000_); 1% E24+E96 (e.g., 1000, 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: 8mm width paper taping (5000pcs/reel), Bulk (5000pcs/polybag)
WA06W: 12mm width paper taping (5000pcs/reel), Bulk (5000pcs/polybag)
WA04X, WA04Y: 8mm width paper taping (10,000pcs/reel)
Paper Tape Specifications
| Symbol | A (mm) | B (mm) | W (mm) | F (mm) | E (mm) |
| WA06X,WA06T | 3.600.20 | 2.000.20 | - | - | - |
| WA04X | 2.200.20 | 1.200.20 | 8.000.30 | 3.500.05 | 1.750.10 |
| WA04Y | 1.150.10 | 1.150.10 | 8.000.30 | 3.500.05 | 1.750.10 |
| WA06W | - | - | 12.000.10 | 5.500.05 | 1.750.10 |
| Symbol | P1 (mm) | P0 (mm) | D (mm) | T (mm) |
| WA06X,WA06T | 4.000.10 | Max. 1.0 | - | - |
| WA04X | Max. 0.6 | - | - | - |
2410121521_Walsin-WA06X1002FTL_C396839.pdf
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