Product Overview
The ASC WA04/06 series offers general-purpose chip resistor arrays designed for high-density surface mounting. These resistors provide small size, light weight, and reduced final equipment size, leading to lower assembly costs and improved 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, internal metal electrodes, and a resistive paste trimmed by laser. The resistive layer is protected by a coating, and end terminations are tin-plated for easy soldering.
Product Attributes
- Brand: ASC
- Certifications: RoHS compliant, lead free products
- Material: High grade ceramic body (aluminum oxide)
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 | 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
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 0.10, 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. Example: 4.7 = 4R7, 10 = 100, 100 = 101, 6800 = 682, 47000 = 473. 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. Power dissipation is dependent on operating temperature as shown in Fig.3.
Mounting and Soldering
Suitable for automatic placement systems on ceramic substrates and printed-circuit boards (PCBs). Electrical connection is by individual soldering. End terminations guarantee reliable contact. Chip resistors can be immersed in a solder bath of 260C for 10 seconds. Tested for solderability at 235C for 2 seconds. No leaching at 260C for 30 seconds. Infrared soldering profile for Chip Resistors array is provided in Fig 4.
Test and Requirements
| Item | Test Procedure | Requirement |
|---|---|---|
| Resistor Jumper DC resistance | Clause 4.5 | Within the specified tolerance (< 50m for Jumper) |
| 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 the 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
The resistors have a catalogue number 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 (2 digits + blank), 1%, E24+E96 (3 digits)
Tolerance: F (1%), J (5%), P (Jumper)
Packaging code: T (7 Reel taping), B (Bulk)
Termination code: L (Sn base, lead free)
Packaging
Reeled tape packaging: 8mm width paper taping (WA04X, WA04Y) or 12mm width paper taping (WA06W). 5000pcs per reel for WA06X, WA06T, WA06W; 10,000pcs per reel for WA04X, WA04Y. Bulk packaging: 5000pcs per polybag.
2410121521_Walsin-WA06X101JTL_C384483.pdf
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