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Specifications
Number of Resistors:
4
Number of Pins:
8
Tolerance:
±5%
Resistance:
680Ω
Power(Watts):
62.5mW
Temperature Coefficient:
±200ppm/℃
Mfr. Part #:
RTA02-4D681JTH
Package:
0402x4
Key Attributes
Model Number:
RTA02-4D681JTH
Product Description
RTA Series Thick Film Array Chip Resistors
The RTA series thick film array chip resistors are lead-free, halogen-free, and RoHS compliant. They are designed for general electronic applications.
Product Attributes
- Brand: RALEC
- Certifications: RoHS compliant
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 (D:0.5%), 10R10M (D:0.5%) | 4 | 2 | 1A | 25m MAX. |
| RTA02-4D (0402) | 1 W | 25V | 50V | 300 | 1R<10 (D:0.5%), 10R10M (D:0.5%) | 8 | 4 | 1A | 25m MAX. |
| RTA02-8D (0402) | 1 W | 25V | 50V | 250 | 10R10M (D:0.5%) | 16 | 8 | 1A | 50m MAX. |
| RTA03-2D (0603) | 1 W | 50V | 100V | 200 | 10R10M (D:0.5%) | 4 | 2 | 1A | 50m MAX. |
| RTA03-4D (0603) | 1 W | 50V | 100V | 200 | 22R470K (F:1%), 1R10M (D:0.5%), 1R10M (J:5%) | 8 | 4 | 1A | 25m MAX. |
| RTA02-2C (0402) | 1 W | 25V | 50V | 650 | 3R10 (D:0.5%), 10R<1M (D:0.5%) | 4 | 2 | 1A | 50m MAX. |
| RTA02-4C (0402) | 1 W | 25V | 50V | 400 | 1R<10 (D:0.5%), 10R1M (D:0.5%) | 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 |
Type Designation Example
RTA 02 - 4 D 100 J TH
- RTA: Thick Film Array Chip Resistor
- 02: Size (0402)
- 4: Number of Circuits (4 circuits)
- D: Electrode Structure (Convex electrode)
- 100: Resistance Value (100)
- J: Tolerance (5%)
- TH: Packaging Type (2 mm Pitch Carrier Tape 10000 pcs)
Reliability Test Items
Electrical Performance Test
| Item | Conditions | Specifications |
|---|---|---|
| Temperature Coefficient of Resistance | (R2-R1)/R1(T2-T1) 10^6 | Refer to 3. Specification Table |
| Short Time Overload | Apply 2.5x rated voltage for 5 sec, rest 30 min. | 0.5%, 1%: R=1.0%; 5%: R=2.0% |
| Insulation Resistance Test | Apply 100 VDC for 1 min. | 10^9 |
| Dielectric Withstand Voltage | Apply 300 VAC for 1 min. | No short or burn |
| Intermittent Overload | 2.5x rated voltage, 1 sec ON, 25 sec OFF, 10,000 cycles. | R=5.0% |
Mechanical Performance Test
| Item | Conditions | Specifications |
|---|---|---|
| Resistance to Solvent | Immerse in Isopropanol (20~25) for 50.5 min. | R=0.5% |
| Solderability | Pre-conditioning: 105, 100% RH, 1.22x10^5 Pa for 4 hrs. | Solder coverage > 95% |
| Resistance to Soldering Heat | Immersion in 260+5/-0 solder bath for 10 sec. | Item 1: R%=1.0%; Item 2: Solder coverage > 95%. No underlayer visible at electrode edge. |
| Joint Strength of Solder | Bending test: 5mm deflection. | R%=1.0% |
Environmental Test
| Item | Conditions | Specifications |
|---|---|---|
| Resistance to Dry Heat | 1555 for 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% |
| Moisture Load Test | 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 hr. | 0.5%, 1%: R=2.0%; 5%: R=3.0% |
Plating Thickness
- Nickel Layer (Ni): 2m
- Pure Tin Layer (Sn): 3m (Matte tin)
Technical Application Notes
Recommended Soldering Conditions
- Lead Free IR-Reflow Soldering Profile (Conforms to J-STD-020): Max. component temperature 260+5/-0, 10 sec.
- Soldering Iron Method: 35010 within 3 sec.
Recommended Land Pattern Design (For Reflow Soldering)
Unit: mm
| Type | A | B | P | Q1 | Q2 |
|---|---|---|---|---|---|
| RTA02-2D | 0.50 | 2.00 | 0.67 | 0.33 | 0.34 |
| RTA02-4D | 0.50 | 2.00 | 0.50 | 0.28 | 0.22 |
| RTA02-8D | 1.00 | 2.60 | 0.50 | 0.25 | 0.25 |
| RTA03-2D | 1.00 | 2.60 | 0.80 | 0.40 | 0.40 |
| RTA03-4D | 1.00 | 2.60 | 0.80 | 0.40 | 0.40 |
| RTA02-2C | 0.50 | 2.00 | 0.50 | 0.28 | 0.22 |
| RTA02-4C | 0.50 | 2.00 | 0.50 | 0.28 | 0.22 |
Usage Environment Precautions
This product is for general electronic applications. RALEC is not responsible for any damage, cost, or loss resulting from the use of this product in special environments. For other applications, please confirm with RALEC for suitability. If using in special environments (high temperature/humidity, corrosive gases, unverified liquids, unverified sealing materials, etc.), product characteristics and reliability must be individually approved. Cleaning after soldering is recommended, even for no-clean flux.
Transient Overload Precautions
This product may lose functionality due to transient overload. Be mindful of manufacturing processes and storage to avoid applying transient currents exceeding product specifications.
Handling and Processing Precautions
- Ensure resistor edges and protective layers are free from mechanical stress damage during operation.
- Handle printed circuit boards (PCBs) carefully when separating or fixing them to support structures, as PCB bending can cause mechanical stress on resistors.
- Resistors must be used within their rated power range. Exceeding rated power may cause machine damage due to temperature rise.
- If resistors are expected to receive significant load (pulse) impacts, set up the operating environment before use.
- Evaluate and confirm the product in your company's actual mounting state, consider fail-safe design, and ensure system safety.
Storage and Handling Conditions
- Storage environment: 255, 6015% RH. Valid for two years.
- Avoid harsh environments such as sea breeze, corrosive gases (Cl2, H2S, NH3, SO2, NO2), direct sunlight, and condensation.
- Ensure correct box orientation during transport and storage. Do not drop or squeeze the box to prevent damage to electrodes or the body.
2411221110_RALEC-RTA02-4D681JTH_C458651.pdf
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