Product Overview
The ASC WA04/06 series offers general-purpose chip resistor arrays designed for surface mounting. These components provide a compact and lightweight solution, leading to reduced final equipment size and lower assembly costs. They are constructed with a high-grade ceramic body and feature internal metal electrodes connected by a resistive paste, precisely trimmed by laser. The resistors are RoHS compliant and lead-free, making them suitable for a wide range of consumer electronics, EDP, computer applications, and telecommunications equipment.
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 | 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 | 0.60 0.20 | 0.40 0.10 |
| 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. Derating is dependent on operating temperature as shown in Fig.3.
Mounting and Soldering
Suitable for automatic placement systems on ceramic substrates and PCBs. Electrical connection by individual soldering. Robust construction allows immersion in solder bath of 260C for 10 seconds. Tested for solderability at 235C for 2 seconds.
Test and Requirements (JIS C 5201-1 : 1998)
| Item | Requirement | Test Procedure |
| DC resistance | Within the specified tolerance | 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) | Clause 4.13 |
| Resistance to soldering heat(R.S.H) | R/R max. (1%+0.05) no visible damage | 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 | 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 | 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 | 50m | 50m | 50m | 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: 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.
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-WA04X151JTL_C2894218.pdf
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