Product Overview
The ASC_WT04X_V14 is a series of chip resistors with a convex termination type, available in the 1206 size. These resistors are designed for high reliability and reduced equipment size, offering lower assembly costs. They are RoHS compliant and lead-free, making them suitable for consumer electrical equipment and EDP/computer applications. The construction involves a ceramic body with a resistive paste layer trimmed by laser, protected by a coating, and finished with tin-plated end terminations for ease of soldering.
Product Attributes
- Brand: ASC
- Series: WT04X
- Type: Convex Type
- Size: 1206 (3216)
- Certifications: RoHS compliant, Lead free
- Material: High grade ceramic body (aluminum oxide)
- Color: Not specified
- Origin: Not specified
Technical Specifications
| Item | Specification |
| Series No. | WT04X (Convex type) |
| Size | 1206 (3216) |
| Resistance Tolerance | ±5% (E24 series) |
| Resistance Range | 10Ω ~ 100KΩ |
| TCR (ppm/°C) | ≤ ± 200 ppm/°C |
| Max. dissipation at Tamb=70°C | 1/16 W |
| Max. Operation Voltage (DC or RMS) | 25V |
| Max. overload voltage | 50V |
| Climatic category | 55/155/56 |
| Dimensions (unit: mm) | L: 3.30 ± 0.20, W: 1.60 ± 0.15, T: 0.55 ± 0.10, P: 0.64 ± 0.05, A: 0.50 ± 0.05, B: 0.40 ± 0.15, C: 0.40 ± 0.15, G: 0.40 ± 0.15 |
| Marking | 3-digits code (e.g., 100 for 10Ω, 101 for 100Ω, 473 for 47000Ω) |
| Standard values | E24 series |
| Soldering Temperature (max) | 260°C for 10 seconds (robust construction) |
| Solderability Test | 235°C for 2 seconds |
| No Leaching Test | 260°C for 30 seconds |
| Packaging | 8mm width paper taping, 5000pcs per reel (7" Reel) |
| Test Requirements (DC resistance) | Within specified tolerance |
| Test Requirements (T.C.R) | Refer to "QUICK REFERENCE DATA" |
| Test Requirements (Short time overload) | ΔR/R max. ±(2%+0.10Ω) |
| Test Requirements (Resistance to soldering heat) | Δ R/R max. ±(1.0%+0.05Ω) |
| Test Requirements (Solderability) | Good tinning (>95% covered), no visible damage |
| Test Requirements (Temperature cycling) | ΔR/R max. ±(1%+0.05Ω) |
| Test Requirements (Load life) | 10Ω ~ 1MΩ: ΔR/R max. ±(3%+0.1Ω); R<10Ω, R≥1MΩ: ΔR/R max. ±(5%+0.1Ω) |
| Test Requirements (Load life in Humidity) | 10Ω ~ 1MΩ: ΔR/R max. ±(3%+0.1Ω); R<10Ω, R≥1MΩ: ΔR/R max. ±(5%+0.1Ω) |
| Test Requirements (Adhesion) | No remarkable damage or removal of the terminations |
| Test Requirements (Insulation Resistance) | R≥10GΩ |
| Test Requirements (Dielectric Withstand Voltage) | No breakdown or flashover |
2508191620_Walsin-WT04X202JTL_C383902.pdf
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