<
>
Specifications
Power(Watts):
100mW
Resistance:
4.99kΩ
Voltage Rating:
75V
Temperature Coefficient:
±100ppm/℃
Operating Temperature:
-55℃~+155℃
Type:
Thick Film Resistor
Tolerance:
±1%
Mfr. Part #:
RK73H1JTTD4991F
Package:
0603
Key Attributes
Model Number:
RK73H1JTTD4991F
Product Description
THICK FILMPRECISION RK73H
Flat Chip Resistors (Precision Grade)
Product Overview
The RK73H series offers high-precision thick film flat chip resistors utilizing a metal glaze thick film for excellent heat and weather resistance. Designed for high stability and reliability with a triple-layer electrode structure, these resistors are suitable for various automatic mounting machines and soldering processes (flow and reflow). They are available in lead-free termination options meeting EU-RoHS requirements and are AEC-Q200 qualified (excluding 1F type).
Product Attributes
- Brand: KOA
- Product Type: Thick Film (Precision) Flat Chip Resistors
- Coating Color: Black (1F, 1H), Blue (1E, 1J, 2A, 2B, 2E, W2H, W3A, W3A2)
- Certifications: EU-RoHS compliant (lead-free termination), AEC-Q200 qualified (Exemption 1F)
- Material: Alumina substrate, Metal glaze thick film, Triple-layer electrode
Technical Specifications
| Type (Inch Size Code) | Dimensions (mm) L x W x D | Weight (g/1000pcs) | Power Rating | Resistance Tolerance | Resistance Range () | Max. Working Voltage | Max. Overload Voltage | Operating Temp. Range | T.C.R. (10/K) | Packaging & Q'ty/Reel (pcs) |
|---|---|---|---|---|---|---|---|---|---|---|
| 1F (01005) | 0.40.02 x 0.20.02 x 0.110.03 | 0.04 | 0.03W | D:0.5% F:1% | 1091k4 (250), 100k2M4 (200) | 20V | 30V | 55125 | 250 (1091k), 200 (100k2M) | TX: 40,000 |
| 1H (0201) | 0.60.03 x 0.30.03 x 0.150.05 | 0.14 | 0.05W | D:0.5% F:1% | 101M (200), 1010M4 (400) | 25V | 50V | 55155 | 200 (101M), 400 (19.1, 1010M) | TBL: 10,000, TCM: 15,000 |
| 1E (0402) | 1.00.1/0.05 x 0.50.05 x 0.250.05/0.1 | 0.68 | 0.1W | D:0.5% F:1% | 101M (100), 1.02M10M (200) | 75V | 100V | 55155 | 100 (101M), 200 (19.76, 1.02M10M) | TPL: 20,000, TP: 10,000 |
| 1J (0603) | 1.60.2 x 0.80.1 x 0.30.1 | 2.14 | 0.1W | D:0.5% F:1% | 101k (100), 1.02k1M (100), 1.02M10M (200) | - | - | 55155 | 100, 200 | TP: 10,000, 5,000 |
| 2A (0805) | 2.00.2 x 1.250.1 x 0.30.2/0.1 | 4.54 | 0.25W | D:0.5% F:1% | 101M (100), 1.02M10M (200, 400) | 150V | 200V | 55155 | 100, 200, 400 | TP: 10,000, 5,000, 4,000 |
| 2B (1206) | 3.20.2 x 1.60.2 x 0.40.2/0.1 | 9.14 | 0.25W | D:0.5% F:1% | 101M (100), 19.76 (200), 1.02M5.6M (400), 5.62M10M (400) | 200V | 400V | 55155 | 100, 200, 400 | 5,000, 4,000 |
| 2E (1210) | 2.60.2 x x 0.50.1 | - | 0.5W | D:0.5% F:1% | 101M (100), 19.76 (200), 1.02M5.6M (400), 5.62M10M (400) | - | - | 55155 | 100, 200, 400 | 5,000, 4,000 |
| W2H (2010)1 | 5.00.2 x 2.50.2 x 0.650.15 | 24.3 | 0.75W | D:0.5% F:1% | 101M (100), 19.76 (200), 1.02M5.6M (400), 5.62M10M (400) | - | - | 55155 | 100, 200, 400 | 4,000 |
| W3A (2512)1 | 6.30.2 x 3.10.2 x 0.40.2/0.1 | 37.1 | 1W | D:0.5% F:1% | 101M (100), 19.76 (200), 1.02M5.6M (400), 5.62M10M (400) | 200V | 400V | 55155 | 100, 200, 400 | 4,000 |
| W3A2 (2512)1 | 6.30.2 x 3.10.2 x 0.40.2/0.1 | - | 2W | D:0.5% F:1% | 101M (100), 19.76 (200), 1.02M5.6M (400), 5.62M10M (400) | 200V | 400V | 95 | 100, 200, 400 | 4,000 |
Performance
| Test Items | Performance Requirements R(0.1) | Test Methods | Limit | Typical |
|---|---|---|---|---|
| Resistance | Within specified tolerance | 25 | - | - |
| T.C.R. | Within specified T.C.R | +25/55 and +25/+125 | - | - |
| Overload (Short time) | 2 (1:1F, 0.5:another) | Rated voltage2.5 for 5s (1E, 2B, W3A2: Rated voltage2 for 5s) | 1:1F, 0.5:another | - |
| Resistance to soldering heat | 1 (1:1FW3A (10R1M), 3:1HW3A (R10, R1M)) | 2605, 10s1s | 0.5 (1:1FW3A (10R1M)), 1 (1:1HW3A (R10, R1M)) | - |
| Rapid change of temperature | 1 (1:1F, 0.5:another) | 55 (30min.)/125 (30min.) 100 cycles | 0.5 (1:1F), 0.3 (another) | - |
| Moisture resistance | 2 (1J, 2A, 2B), 3 (another) | 402, 90%95%RH, 1000h (1.5h ON/0.5h OFF cycle) | 0.75 (1J, 2A, 2B), 1.5 (1F), 1 (another) | - |
| Endurance at 70 | 2 (1J, 2A, 2B), 3 (another) | 702, 1000h (1.5h ON/0.5h OFF cycle) | 0.75 (1J, 2A, 2B), 1 (another) | - |
| High temperature exposure | 1 | +125, 1000h (1F); +155, 1000h (1H, 1E, 1J, 2A, 2B, 2E, W2H, W3A, W3A2) | 0.5 (1F), 0.3 (another) | - |
Derating Curve
For resistors operated at an ambient temperature of 70 or above, a power rating shall be derated in accordance with the above derating curve. For resistors operated at a terminal part temperature described for each size or above, a power rating shall be derated in accordance with the derating curve.
Precautions for Use
- The substrate of chip resistors is alumina. Cracks may occur at the connection of solder (solder fillet portion) due to the difference of the coefficient of thermal expansion from a mounting board when heat stress like heat cycle, etc. are repeatedly given to them. Care should be taken to the occurrence of the cracks when the change in ambient temperature or ON/OFF of load is repeated, especially when large types of W2H/W3A/W3A2 which have large thermal expansion and also self heating. The occurrence of the crack by heat stress may be influenced by the size of a pad, solder volume, heat radiation of mounting board etc., so please pay careful attention to designing when a big change in ambient temperature and conditions for use like ON/OFF of load can be assumed.
- Care should be taken that RK73H1F may be damaged when static electricity occurs and is applied in the equipment.
2409272202_KOA-RK73H1JTTD4991F_C202909.pdf
Request A Quote
Please Use Our Online Inquiry Contact Form Below If You Have Any Questions, Our Team Will Get Back To You As Soon As Possible
