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 electronic uses.
Product Attributes
- Brand: RALEC
- Certifications: RoHS compliant, Lead-free, Halogen-free
Technical Specifications
| Type | Rated Power | Max. Rated Voltage | Max. Overload Voltage | T.C.R (ppm/) | Resistance Range | Number of Terminals | Number of Resistors | Rated Current (JUMPER 0) | Max. Resistance (JUMPER 0) |
|---|---|---|---|---|---|---|---|---|---|
| RTA02-2D (0402) | 1 W | 25V | 50V | 300 (1R<10), 200 (10R10M) | 1R<10, 10R10M | 4 | 2 | 1A | 25m MAX. |
| RTA02-4D (0402) | 1 W | 25V | 50V | 300 (1R<10), 200 (10R10M) | 1R<10, 10R10M | 8 | 4 | 1A | 25m MAX. |
| RTA02-8D (0402) | 1 W | 25V | 50V | 250 (10R10M) | 10R10M | 16 | 8 | 1A | 50m MAX. |
| RTA03-2D (0603) | 1 W | 50V | 100V | 200 (10R10M) | 10R10M | 4 | 2 | 1A | 50m MAX. |
| RTA03-4D (0603) | 1 W | 50V | 100V | 200 (22R470K), 200 (1R10M) | 22R470K, 1R10M | 8 | 4 | 1A | 25m MAX |
| RTA02-2C (0402) | 1 W | 25V | 50V | 650 (3R10), 200 (10R<1M) | 3R10, 10R1M | 4 | 2 | 1A | 50m MAX. |
| RTA02-4C (0402) | 1 W | 25V | 50V | 400 (1R<10), 200 (10R1M) | 1R<10, 10R1M | 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 Specifications
| Test Item | Conditions | Specifications (Resistors) |
|---|---|---|
| Temperature Coefficient of Resistance | -55 to Room Temp. | Refer to Spec. Table |
| Room Temp. to +125 | Refer to Spec. Table | |
| Short Time Overload | 2.5x Rated Voltage for 5 sec. | 0.5%, 1%: R=1.0%; 5%: R=2.0% |
| Insulation Resistance | 100 VDC for 1 min. | 109 |
| Dielectric Withstand Voltage | 300 VAC for 1 min. | No short or breakdown |
| Intermittent Overload | 2.5x Rated Voltage, 1 sec ON, 25 sec OFF, 10,000 cycles | R=5.0% |
| Resistance to Solvent | Isopropyl alcohol, 5 min. | R=0.5% |
| Solderability | 2355, 20.5 sec. | Soldered area > 95% |
| Resistance to Soldering Heat | 260+5/-0, 10 sec.+1/-0 | R%=1.0% |
| 260+5/-0, 30 sec.+1/-0 | Soldered area > 95% | |
| Joint Strength of Solder | Bending test D=5mm | R%=1.0% |
| Resistance to Dry Heat | 1555, 10004 hr | 0.5%, 1%: R=1.0%; 5%: R=2.0% |
| 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 | 0.5%, 1%: R=2.0%; 5%: R=3.0% |
| Load Life | 702, Rated Voltage, 90 min ON, 30 min OFF, 1,000 hrs | 0.5%, 1%: R=2.0%; 5%: R=3.0% |
Plating Thickness
- Nickel Layer (Ni): 2m
- Pure Tin Layer (Sn): 3m (Matte Tin)
Application Notes
Recommended Soldering Conditions:
(a) Lead Free IR-Reflow Soldering Profile (J-STD-020 compliant): Component max temperature 260+5/-0, 10 sec.
(b) Soldering Iron Method: 35010 within 3 seconds.
Recommended Land Pattern Design (For Reflow Soldering):
Note: Resistance value may vary slightly after soldering depending on the size and amount of solder. Consider the effect of resistance decrease or increase when designing circuits.
Environmental Considerations:
This product is for general electronic applications. RALEC is not responsible for any damages, costs, or losses incurred due to the use of this product in special environments. Confirmation with RALEC is required for other applications. Special attention is needed for environments such as high temperature/humidity, corrosive gases (Cl2, H2S, NH3, SO2, NO2), non-verified liquids, sealing with unverified resins, and cleaning with water-soluble detergents after soldering.
Transient Overload Precautions:
This product may lose functionality due to transient overload. Ensure manufacturing processes and storage prevent transient currents exceeding product specifications.
Handling and Operation Precautions:
(a) Protect resistor edges and protective coating from mechanical stress during operation.
(b) Handle PCBs carefully when separating or fixing them to support structures, as PCB bending can cause mechanical stress on resistors.
(c) Use resistors within their rated power range. Exceeding the rated value can cause machine damage due to temperature rise.
(d) Set the operating environment before use if the resistor may experience significant load (pulse) impacts. Evaluate and confirm in your actual application, ensuring fail-safe design for system safety.
Storage and Handling Conditions
- Storage: 2 years under 255, 6015% RH.
- Avoid harsh environments: sea breeze, corrosive gases (Cl2, H2S, NH3, SO2, NO2), direct sunlight, condensation.
- Handle boxes with correct orientation; avoid dropping or crushing to prevent damage to electrodes or body.
2411221110_RALEC-RTA02-4D820JTH_C458669.pdf
Please Use Our Online Inquiry Contact Form Below If You Have Any Questions, Our Team Will Get Back To You As Soon As Possible
