RTA Series Thick Film Array Chip Resistors
The RTA series resistors are lead-free, halogen-free, and RoHS compliant thick film array chip resistors designed for general electronic applications. They offer reliable performance and are suitable for various general-purpose electronic uses.
Product Attributes
- Brand: RALEC
- Series: RTA
- Compliance: Lead-free, Halogen-free, RoHS
- Application: General Electronic Use
Technical Specifications
| Type | Rated Power | Max. Rated Voltage | Max. Overload Voltage | T.C.R (ppm/) | Resistance Range | Terminals | Resistors | JUMPER (0) Rated Current | JUMPER (0) Resistance |
|---|---|---|---|---|---|---|---|---|---|
| RTA02-2D (0402) | 1 W | 25V | 50V | 300 | 1R<10 | 4 | 2 | 1A | 25m MAX. |
| RTA02-4D (0402) | 1 W | 25V | 50V | 300 | 1R<10 | 8 | 4 | 1A | 25m MAX. |
| RTA02-8D (0402) | 1 W | 25V | 50V | 250 | 10R10M | 16 | 8 | 1A | 50m MAX. |
| RTA03-2D (0603) | 1 W | 50V | 100V | 200 | 10R10M | 4 | 2 | 1A | 50m MAX. |
| RTA03-4D (0603) | 1 W | 50V | 100V | 200 | 1R10M | 8 | 4 | 1A | 25m MAX. |
| RTA02-2C (0402) | 1 W | 25V | 50V | 650 | 3R10 | 4 | 2 | 1A | 50m MAX. |
| RTA02-4C (0402) | 1 W | 25V | 50V | 400 | 1R<10 | 8 | 4 | 1A | 50m MAX. |
Operating Temperature Range
-55 ~ 155
Dimensions (mm)
| Type | L | W | H | L1 | L2 | P | Q |
|---|---|---|---|---|---|---|---|
| RTA02-2D (0402) | 1.000.10 | 1.000.10 | 0.300.05 | 0.150.10 | 0.250.10 | (0.67) | 0.330.10 |
| RTA02-4D (0402) | 2.000.10 | 1.000.10 | 0.400.10 | 0.200.10 | 0.250.10 | (0.50) | 0.300.10 |
| RTA02-8D (0402) | 4.000.20 | 1.600.10 | 0.400.10 | 0.300.15 | 0.300.10 | (0.50) | 0.250.10 |
| RTA03-2D (0603) | 1.600.15 | 1.600.15 | 0.450.10 | 0.300.15 | 0.300.15 | (0.80) | 0.600.10 |
| RTA03-4D (0603) | 3.200.20 | 1.600.15 | 0.500.10 | 0.300.15 | 0.300.15 | (0.80) | 0.500.10 |
| RTA02-2C (0402) | 1.000.10 | 1.000.10 | 0.300.10 | 0.180.10 | 0.250.10 | (0.50) | 0.300.10 |
| RTA02-4C (0402) | 2.000.10 | 1.000.10 | 0.400.10 | 0.150.10 | 0.250.10 | (0.50) | 0.300.10 |
Structure Diagram
Diagrams for D(Convex) Type and C(Concave) Type are available, illustrating components like ceramic substrate, electrodes, resistive layer, protective coatings, and plating.
Reliability Test Items
Electrical Performance Test
| Item | Conditions | Specifications |
|---|---|---|
| Temperature Coefficient of Resistance | Based on JIS-C5201-1 4.8 | Refer to Specification Table |
| Short Time Overload | 2.5x rated voltage for 5 sec, rest 30 min. Based on JIS-C5201-1 4.13 | 0.5%, 1%: R=1.0%; 5%: R=2.0% |
| Insulation Resistance | 100 VDC for 1 min. Based on JIS-C5201-1 4.6 | 109 |
| Dielectric Withstand Voltage | 300 VAC for 1 min. Based on JIS-C5201-1 4.7 | No short circuit or burn-out |
| Intermittent Overload | 2.5x rated voltage, 1s ON, 25s OFF, 10,000 cycles. Based on JIS-C5201-1 4.13 | R=5.0% |
Mechanical Performance Test
| Item | Conditions | Specifications |
|---|---|---|
| Resistance to Solvent | Immerse in Isopropyl alcohol (20~25) for 50.5 min. Based on JIS-C5201-1 4.29 | R=0.5% |
| Solderability | Pre-treatment: 4 hrs at 105/100%RH/1.22105 pa. Test: Immerse in 2355 solder for 20.5 sec. Based on JIS-C5201-1 4.17 | Soldered area >95% |
| Resistance to Soldering Heat | Test 1: Immerse in 260+5/-0 solder for 10 sec. Test 2: Immerse in 260+5/-0 solder for 30 sec. Based on JIS-C5201-1 4.18 | Test 1: R%=1.0%. Test 2: Soldered area >95%, no underlying material visible at electrode edge. |
| Joint Strength of Solder | Bending test: Apply 5mm downward force. Based on JIS-C5201-1 4.33 | R%=1.0% |
Environmental Test
| Item | Conditions | Specifications |
|---|---|---|
| Resistance to Dry Heat | 1555 for 10004 hr. Based on JIS-C5201-1 4.25 | 0.5%, 1%: R=1.0%; 5%: R=2.0% |
| Thermal Shock | -55 (15 min) to +125 (15 min), 300 cycles. Based on MIL-STD 202 Method 107 | R=1.0% |
| Loading Life in Moisture | 402, 90~95% RH, rated voltage, 90min ON, 30min OFF, 1,000 hr. Based on JIS-C5201-1 4.24 | 0.5%, 1%: R=2.0%; 5%: R=3.0% |
| Load Life | 702, rated voltage, 90min ON, 30min OFF, 1,000 hr. Based on JIS-C5201-1 4.25 | 0.5%, 1%: R=2.0%; 5%: R=3.0% |
Plating Thickness
- Nickel (Ni) Layer: 2m
- Pure Tin Layer: 3m (Matte Tin)
Technical Application Notes
- Recommended Soldering Conditions: Lead Free IR-Reflow Soldering Profile (J-STD-020), Iron Soldering: 35010 within 3 seconds.
- Recommended Land Pattern Design for Reflow Soldering: Specific dimensions provided for various types.
- Environmental Precautions: Not recommended for special environments (high temp/humidity, corrosive gases, unverified liquids, etc.) without confirmation. Cleaning after soldering is recommended.
- Transient Overload Precautions: Avoid transient overloads exceeding product specifications.
- Handling and Operation Precautions: Protect edges and coating from mechanical stress. Avoid bending PCB. Operate within rated power. Consider pulsed load conditions. Evaluate in actual application for safety.
Storage and Handling Conditions
- Storage: 255, 6015% RH for two years.
- Avoid adverse environments: sea breeze, corrosive gases (Cl2, H2S, NH3, SO2, NO2), direct sunlight, condensation.
- Handling: Maintain correct box orientation. Avoid dropping or crushing.
Marking
Outer packaging marked with Electronic Information Product Pollution Control Mark and Packaging Recycling Mark for export to mainland China.
Disclaimer
RALEC and its distributors/agents are not liable for any errors, inaccuracies, or incompleteness in product information. RALEC may change product information without notice. RALEC makes no warranties regarding suitability for specific purposes or continued production. RALEC is not liable for any damages, losses, or consequential damages arising from the use of its products. The products are defined for general electronic use and not for automotive, medical life-support, or any application where failure could cause injury or death. Technical advice is provided free of charge, and users assume all risks. Users are responsible for risks associated with combining RALEC products with other materials or processes. RALEC reserves the right to modify specifications without notice.
2411221110_RALEC-RTA02-4D271JTH_C913417.pdf
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