Product Overview
The ASC_WA04/06 series offers general-purpose chip resistor arrays in various sizes and configurations (Convex and Concave types). These resistors are designed for reduced equipment size, lower assembly costs, and higher reliability, making them suitable for consumer electronics, EDP, and telecommunication applications. They are RoHS compliant and lead-free.
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 (unit : mm)
| Series | L | W | T | P | A | Ta | Tb | B | C | G | D | 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 | - | 0.30 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. Power dissipation is dependent on operating temperature, refer to Fig. 3 for derating curves.
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 infrared soldering profile.
Test and Requirements (JIS C 5201-1 : 1998)
| Requirement | Test Procedure | Test Condition | Criteria |
| DC Resistance | Clause 4.5 | Specified test voltages per resistance range | Within specified tolerance; < 50m for Jumper |
| Temperature Coefficient of Resistance (T.C.R) | Clause 4.8 | t1: 20C5C-1C, t2: test temperature | (R2-R1)/R1 * 1/ (t2-t1) (ppm/C) |
| Short Time Overload (S.T.O.L) | Clause 4.13 | 2.5 times RCWV or max. overload voltage for 5 seconds | R/R max. (2%+0.10); < 50m |
| Resistance to Soldering Heat (R.S.H) | Clause 4.18 | Immersed in SAC solder bath at 2605 for 101 seconds | R/R max. (1%+0.05); no visible damage; < 50m |
| Solderability | Clause 4.17 | Immersed in SAC solder bath at 2355 for 20.5 seconds | Good tinning (>95% covered); no visible damage |
| Temperature Cycling | Clause 4.19 | 5 continuous cycles: -55C (30min) to +155C (30min) with 2-3 min transitions | R/R max. (1%+0.05); no visible damage; < 50m |
| Load Life (Endurance) | Clause 4.25 | 1000 hours at 702C, loaded with RCWV or Vmax | R/R max.(3%+0.10) for 10R<1M; (5%+0.10) for R<10, R1M; < 50m |
| Load Life in Humidity | Clause 4.24 | 1000 hours at 40C2C and 90~95% RH, loaded with RCWV or Vmax | R/R max.(3%+0.10) for 10R<1M; (5%+0.10) for R<10, R1M; < 50m |
| Adhesion | Clause 4.32 | Pressurizing force: 5N, Test time: 101sec | No remarkable damage or removal of terminations |
| Insulation Resistance | Clause 4.6 | Apply max. overload voltage (DC) for 1 minute | R10G |
| Dielectric Withstand Voltage | Clause 4.7 | Apply max. overload voltage (AC) for 1 minute | 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: 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 (unit :mm)
| Symbol | A | B | W | F | E | P1 | P0 | D | T |
| WA06X,WA06T | 3.600.20 | 2.000.20 | 8.000.30 | 3.500.05 | 1.750.10 | 4.000.10 | Max. 1.0 | - | - |
| WA04X | 2.200.20 | 1.200.20 | 8.000.30 | 3.500.05 | 1.750.10 | Max. 0.6 | - | - | - |
| WA04Y | 1.150.10 | 1.150.10 | 8.000.30 | 3.500.05 | 1.750.10 | - | - | - | - |
| WA06W | 2.0 0.0 20 .4 + | 12 .0 0.0 80 .1 + | 12.000.10 | 5.500.05 | 1.750.10 | - | - | - | - |
2410121521_Walsin-WA04X473JTL_C171906.pdf
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