Thick Film Chip Resistors KOA RK73B2ETTD753J Suitable for Automotive Medical and Aerospace Equipment
THICK FILM CHIP RESISTORS RK73B
The RK73B series of thick film chip resistors offers a robust product lineup from 0402 to 6432 sizes. Featuring a metal glaze thick film protective layer, these resistors exhibit excellent heat and weather resistance. They are compatible with reflow and wave soldering processes and are RoHS compliant with lead-free terminals. These resistors are suitable for various applications, including automotive, medical, and aerospace equipment, where safety and reliability are paramount. AEC-Q200 data is available for most models.
Product Attributes
- Brand: KOA
- Product Type: Thick Film Chip Resistors
- Model Series: RK73B
- Construction: Rectangular Chip Resistor
- Appearance Color: Black
- Material: Ceramic Substrate, Metal Glaze Thick Film
- Certifications: EU RoHS compliant (excluding lead glass in electrodes, resistance film, and glass), AEC-Q200 (except 1F)
- Terminal Surface Material: T: Sn, G: Au3 (L: Sn/Pb4)
- Secondary Processing: TX, TBL, TCM, TPL, TP, TD, TE, BK
Technical Specifications
| Model (Size Code) | Dimensions (mm) L x W x t | Weight (g/1000pcs) | Rated Power (at 70) | Operating Temp. Range | Resistance Value Range () | Max. Operating Voltage | Max. Overload Voltage | Resistance Temp. Coefficient (10/K) | Tolerances | Packaging (pcs/reel) |
|---|---|---|---|---|---|---|---|---|---|---|
| 1F (0402/01005) | 0.40.02 x 0.20.02 x 0.130.02 | 0.04 | 0.03W | -55+125 | 19.1 (250), 1091k (250), 100k1M (200), 100k10M (200) | 20V | 30V | 200, 250, 0+300 | G:2%, J:5% | 40,000 (TCM) |
| 1H (0603/0201) | 0.60.03 x 0.30.03 x 0.230.03 | 0.14 | 0.05W | -55+155 | 19.1 (400), 1010M (200) | 25V | 50V | 200, 400 | G:2%, J:5% | 15,000 (TCM) |
| 1E (1005/0402) | 1.0 +0.1/-0.05 x 0.50.05 x 0.350.05 | 0.68 | 0.1W | -55+155 | 110M (200) | 75V | 100V | 200 | G:2%, J:5% | TPL: 20,000, TP: 10,000 |
| 1J (1608/0603) | 1.60.2 x 0.80.1 x 0.450.1 | 2.14 | 0.1W | -55+155 | 1.1k10M (200), 11M22M (400) | - | - | 200, 400 | G:2%, J:5% | TP: 10,0006 |
| 1J (0.125W) | 1.60.2 x 0.80.1 x 0.450.1 | 2.14 | 0.125W | -55+155 | 11k (200) | - | - | 200 | G:2%, J:5% | TP: 10,0006 |
| 2A (2012/0805) | 2.00.2 x 1.250.1 x 0.50.1 | 4.54 | 0.25W | -55+155 | 11M (200), 1.1M10M (400) | 150V | 200V | 200, 400 | G:2%, J:5% | TP: 10,0006, 5,000, 4,0006 |
| 2B (3216/1206) | 3.20.2 x 1.60.2 x 0.60.1 | 9.14 | 0.25W | -55+155 | 15.6M (200), 6.2M10M (400), 6.2M22M (400) | 200V | 400V | 200, 400 | G:2%, J:5% | 5,000, 4,0006 |
| 2E (3225/1210) | 3.20.2 x 2.60.2 x 0.60.1 | 15.5 | 0.5W | -55+155 | 15.6M (200), 6.2M10M (400) | - | - | 200, 400 | G:2%, J:5% | 5,000, 4,0006 |
| W2H (5025/2010) | 5.00.2 x 2.50.2 x 0.650.15 | 24.3 | 0.75W | -55+155 | 15.6M (200), 6.2M22M (400) | - | - | 200, 400 | G:2%, J:5% | 4,000 |
| W3A (6432/2512) | 6.30.2 x 3.10.2 x 0.650.15 | 37.1 | 1.0W | -55+155 | 15.6M (200), 6.2M22M (400) | 200V | 400V | 200, 400 | G:2%, J:5% | 4,000 |
| W3A2 (6432/2512) | 6.30.2 x 3.10.2 x 0.650.15 | 37.1 | 2.0W5 | -55+95 | 15.6M (200), 6.2M22M (400) | 200V | 400V | 200, 400 | G:2%, J:5% | 4,000 |
Performance
| Test Item | Guaranteed Value | Typical Value | Test Method |
|---|---|---|---|
| Resistance Value | Within specified tolerance | - | 25 |
| Temperature Coefficient of Resistance | Within specified value | - | +25/-55, +25/+125 |
| Overload (Short Time) | 1 (1F), 0.5 (others) | - | 2.5x rated voltage for 5s (2x for 1E, 2B, W3A2) |
| Resistance to Soldering Heat | 0.5 (10R1M), 1 (R10, R1M) | - | 2605, 10s1s |
| Thermal Shock | 1 (1F, Performance "A"), 0.5 (others) | 0.5 (1F, Performance "A"), 0.3 (others) | -55(30min.)/+125(30min.), 100 cycles (Standard), 1000 cycles (Performance "A") |
| Damp Heat Load | 2 (1J, 2A, 2B), 3 (others) | 0.75 (1J, 2A, 2B), 1 (others) | 402, 90%95%RH, 1000h (1.5h ON, 0.5h OFF cycle) |
| Endurance | 2 (1J, 2A, 2B), 3 (others) | 0.75 (1J, 2A, 2B), 1 (others) | 702 or rated terminal temp. 2, 1000h (1.5h ON, 0.5h OFF cycle) |
| High Temperature Storage | 1 | 0.5 (1F), 0.3 (others) | +125, 1000h (1F); +155, 1000h (others) |
Derating Curves
Power derating is necessary when operating above rated ambient temperature or exceeding rated terminal temperature. Refer to the provided derating curves for specific models.
Temperature Rise Data
Temperature rise data is provided as a reference. Actual values may vary based on usage conditions and substrate. Measurement conditions: Room temp: 25, Substrate: FR-4 t=1.6mm, Cu foil thickness: 35m.
Single Pulse Limiting Power Curve
The maximum applicable voltage is the maximum overload voltage. Consult for continuous pulse tolerance. Data is for reference only; confirm with actual equipment.
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