RTA Series Thick Film Array Chip Resistors
The RTA series thick film array chip resistors are lead-free, halogen-free, and RoHS compliant, suitable for general electronic applications. They offer various configurations for size, number of circuits, electrode structure, resistance value, tolerance, and packaging types.
Product Attributes
- Brand: RALEC
- Certifications: RoHS compliant
- Material: Thick film on ceramic substrate
Technical Specifications
| Type | Rated Power | Max. Rated Voltage | Max. Overload Voltage | T.C.R (ppm/) | Resistance Range | Number of Terminals | Number of Resistors | JUMPER (0) Rated Current | JUMPER (0) Resistance |
| RTA02-2D (0402) | 1W | 25V | 50V | 300 | 1R<10 | 4 | 2 | 1A | 25m MAX. |
| RTA02-4D (0402) | 1W | 25V | 50V | 300 | 1R<10 | 8 | 4 | 1A | 25m MAX. |
| RTA02-8D (0402) | 1W | 25V | 50V | 250 | 10R10M | 16 | 8 | 1A | 50m MAX. |
| RTA03-2D (0603) | 1W | 50V | 100V | 200 | 10R10M | 4 | 2 | 1A | 50m MAX. |
| RTA03-4D (0603) | 1W | 50V | 100V | 200 | 22R470K (F), 1R10M (J) | 8 | 4 | 1A | 25m MAX (F), 50m MAX (J) |
| RTA02-2C (0402) | 1W | 25V | 50V | 650 | 3R10 | 4 | 2 | 1A | 50m MAX. |
| RTA02-4C (0402) | 1W | 25V | 50V | 400 | 1R<10 | 8 | 4 | 1A | 50m MAX. |
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 |
Reliability Test Items
| Category | Item | Conditions | Specifications |
| Electrical Performance Test | Temperature Coefficient of Resistance | (R2-R1)/R1(T2-T1) 106 | Refer to Specification Table |
| Short Time Overload | 2.5x rated voltage for 5 sec. | R=1.0% (0.5%, 1%), R=2.0% (5%) | |
| Insulation Resistance Test | 100 VDC for 1 min. | 109 | |
| Dielectric Withstand Voltage | 300 VAC for 1 min. | No short circuit or burnout | |
| Intermittent Overload | 2.5x rated voltage, 1 sec ON, 25 sec OFF, 10,000 cycles | R=5.0% | |
| Mechanical Performance Test | Resistance to Solvent | Immersed in Isopropanol for 5 min. | R=0.5% |
| Solderability | Pre-treatment: 4 hrs aging at 105C/100% RH/1.22105 pa. Test: Immerse in 2355 solder for 20.5 sec. | Soldered area > 95% | |
| Resistance to Soldering Heat | Immerse in 260+5/-0 solder for 10 sec. | R%=1.0% (Resistance change); Soldered area > 95% (Visual inspection) | |
| Environmental Test | Resistance to Dry Heat | 1555 for 10004 hr. | R=1.0% (0.5%, 1%), R=2.0% (5%) |
| Thermal Shock | -55 (15 min) to +125 (15 min), 300 cycles | R=1.0% | |
| Loading Life in Moisture | 402, 90~95% RH, rated voltage, 90 min ON, 30 min OFF, 1,000 hr | R=2.0% (0.5%, 1%), R=3.0% (5%) |
Plating Thickness
- Nickel Layer (Ni): 2m
- Pure Tin Layer (Sn): 3m (Matte tin)
Application Notes
- Recommended Soldering Conditions: Lead Free IR-Reflow Soldering Profile (J-STD-020 compliant), Iron Soldering: 35010 within 3 seconds.
- Recommended Land Pattern Design provided for various types.
- Environmental precautions for high temperature/humidity, corrosive atmospheres, non-verified liquids, and sealing materials.
- Transient overload and handling precautions are advised.
Storage and Handling Conditions
- Storage: 255, 6015% RH for two years.
- Avoid corrosive environments, direct sunlight, and condensation.
- Ensure correct box orientation, avoid dropping or squeezing.
2411221110_RALEC-RTA03-4D272JTP_C102660.pdf
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