Product Overview
The ASC WA04/06 series offers general purpose chip resistors arrays designed for reduced equipment size, lower assembly costs, and higher reliability. These RoHS compliant and lead-free products are constructed with a high-grade ceramic body and feature internal metal electrodes connected by a resistive paste, precisely trimmed by laser. They are suitable for various applications including consumer electrical equipment, EDP, and telecommunications.
Product Attributes
- Brand: ASC
- Material: High grade ceramic body (aluminum oxide)
- Certifications: RoHS compliant, Lead free
- Construction: Convex Type & Concave Type
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 Jumper | 10 R 1M: 200; R<10, R>1M: - | 1/16 W | 50V | 100V | 55/155/56 |
| WA06X (Convex) | 0603x4 (1608x4) | 5% | 3 ~ 1M | 10 R 1M: 200; R<10, R>1M: -300~+500 | 1/10 W | 50V | 100V | 55/155/56 |
| WA06W (Convex) | 0602x8 (1605x8) | 1% | 10 ~ 100K Jumper | 10 R 1M: 100; R<10, R>1M: - | 1/16 W | 50V | 100V | 55/155/56 |
| WA06T (Concave) | 0603x4 (1608x4) | 5% | 1 ~ 10M Jumper, 10 ~ 1M | 10 R 1M: 200; R<10, R>1M: -300~+500 | 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 | 0.40 0.20 | 0.30 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. 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. Power dissipation depends on operating temperature (see Fig.3).
Mounting and Soldering
Suitable for automatic placement systems on ceramic substrates and PCBs. End terminations guarantee reliable contact. 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. Refer to Fig 4 for typical soldering profiles.
Test and Requirements (JIS C 5201-1 : 1998)
| Item | Requirement | Test Procedure |
| DC Resistance | Within the specified tolerance; < 50m for Jumper | Clause 4.5 |
| Temperature Coefficient of Resistance (T.C.R) | Refer to QUICK REFERENCE DATA | Clause 4.8 |
| Short time overload (S.T.O.L) | R/R max. (2%+0.10); < 50m | Clause 4.13 |
| Resistance to soldering heat(R.S.H) | R/R max. (1%+0.05); no visible damage; < 50m | Clause 4.18 |
| Solderability | good tinning (>95% covered); no visible damage | Clause 4.17 |
| Temperature cycling | R/R max. (1%+0.05); no visible damage | Clause 4.19 |
| Load life (endurance) | R/R max.(3%+0.10) For 10R<1M ; R/R max.(5%+0.10) For R<10, R1M; < 50m | Clause 4.25 |
| Load life in Humidity | R/R max.(3%+0.10) For 10R<1M ; R/R max.(5%+0.10) For R<10, R1M; < 50m | Clause 4.24 |
| Adhesion | No remarkable damage or removal of the terminations. | Clause 4.32 |
| Insulation Resistance | R10G | Clause 4.6 |
| Dielectric Withstand Voltage | No breakdown or flashover | Clause 4.7 |
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_); 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: 8mm width paper taping, 5000pcs per reel; Bulk packaging: 5000pcs per polybag.
WA06W: 12mm width paper taping, 5000pcs per reel; Bulk packaging: 5000pcs per polybag.
WA04X, WA04Y: 8mm width paper taping, 10,000pcs per reel.
2410121521_Walsin-WA06X750JTL_C396858.pdf
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