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Specifications
Power(Watts):
250mW
Resistance:
470kΩ
Voltage Rating:
150V
Temperature Coefficient:
±100ppm/℃
Operating Temperature:
-55℃~+155℃
Type:
Thick Film Resistor
Tolerance:
±1%
Mfr. Part #:
RK73H2ATTD4703F
Package:
0805
Key Attributes
Model Number:
RK73H2ATTD4703F
Product Description
Product Overview
The RK73H series are thick film (precision grade) flat chip resistors designed for high reliability and stability. They feature a small, lightweight form factor, excellent heat and weather resistance due to their metal glaze thick film construction, and a triple-layer electrode structure. These resistors are suitable for automatic mounting machines and are compatible with both flow and reflow soldering. They are RoHS compliant with lead-free terminations, and some models are AEC-Q200 qualified. Applications include automotive, medical, and aerospace equipment, though users must contact the company for use in safety-critical systems.
Product Attributes
- Brand: KOA
- Product Type: Flat Chip Resistors (Precision Grade)
- Construction: Thick Film
- 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)
- Origin: Japan (implied by manufacturer)
Technical Specifications
| Type (Inch Size Code) | Dimensions (mm) L x W x c x d x t | Weight (1000pcs) (g) | Power Rating | Rated Ambient Temp. | Rated Terminal Part Temp. | T.C.R. (10-6/K) | Resistance Range () | Max. Working Voltage | Max. Overload Voltage | Packaging & Q'ty/Reel (pcs) |
| 1F (01005) | 0.40.02 x 0.20.02 x 0.100.03 x 0.110.03 x 0.130.02 | 0.04 | 0.03W | 70 | 200 (1091k) 250 (100k2M) | 1091k (E24) 100k2M (E24) | 20V | 30V | TX: 40,000 | |
| 1H (0201) | 0.60.03 x 0.30.03 x 0.10.05 x 0.150.05 x 0.230.03 | 0.14 | 0.05W | 70 | 125 | 200 (19.1) 400 (101M) | 101M (E24E96) 1010M (E24) | 25V | 50V | TX: 35,000 |
| 1E (0402) | 1.0+0.1-0.05 x 0.50.05 x 0.20.1 x 0.25+0.05-0.1 x 0.350.05 | 0.68 | 0.1W | 70 | 125 | 100 (101M) 200 (1.02M10M) | 101M (E24E96) 1.02M10M (E24) | 75V | 100V | TBL: 20,000 TA: 20,000 TC: 10,000 TCM: 15,000 |
| 1J (0603) | 1.60.2 x 0.80.1 x 0.30.1 x 0.30.1 x 0.450.1 | 2.14 | 0.1W 0.125W | 70 | 125 | 100 (1.02k1M) 200 (1.02M10M) 100 (101k) 200 (19.76) | 1.02k1M (E24E96) 1.02k1M (E24) 101k (E24) 19.76 (E24) | TP: 10,000 TPL: 10,000 | ||
| 2A (0805) | 2.00.2 x 1.250.1 x 0.40.2 x 0.3+0.2-0.1 x 0.50.1 | 4.54 | 0.25W | 70 | 125 | 100 (101M) 200 (1.02M10M) 400 (1.02M10M) | 101M (E24E96) 101M (E24) 19.76 (E24) 1.02M10M (E24) | 150V | 200V | TP: 10,000 TD: 5,000 TE: 4,000 |
| 2B (1206) | 3.20.2 x 1.60.2 x 0.50.3 x 0.4+0.2-0.1 x 0.60.1 | 9.14 | 0.25W | 70 | 125 | 100 (101M) 200 (1.02M5.6M) 400 (5.62M10M) | 101M (E24E96) 101M (E24) 19.76 (E24) 1.02M5.6M (E24) 5.62M10M (E24) | 200V | 400V | TD: 5,000 TE: 4,000 |
| 2E (1210) | 2.60.2 x 1.50.2 x 0.60.15 x 0.4+0.2-0.1 x 0.60.1 | 15.5 | 0.5W | 70 | 125 | 100 (101M) 200 (1.02M5.6M) 400 (5.62M10M) | 101M (E24E96) 101M (E24) 19.76 (E24) 1.02M5.6M (E24) 5.62M10M (E24) | TD: 5,000 TE: 4,000 | ||
| W2H (2010) | 5.00.2 x 2.50.2 x 0.650.15 x 0.4+0.2-0.1 x 0.750.1 | 24.3 | 0.75W | 70 | 125 | 100 (101M) 200 (1.02M5.6M) 400 (5.62M10M) | 101M (E24E96) 101M (E24) 19.76 (E24) 1.02M5.6M (E24) 5.62M10M (E24) | TE: 4,000 | ||
| W3A (2512) | 6.30.2 x 3.10.2 x 0.80.2 x 0.4+0.2-0.1 x 1.00.1 | 37.1 | 1W | 70 | 125 | 100 (101M) 200 (1.02M5.6M) 400 (5.62M10M) | 101M (E24E96) 101M (E24) 19.76 (E24) 1.02M5.6M (E24) 5.62M10M (E24) | 200V | 400V | TE: 4,000 |
| W3A2 (2512) | 6.30.2 x 3.10.2 x 0.80.2 x 0.4+0.2-0.1 x 1.00.1 | 37.1 | 2W | 95 | 100 (101M) 200 (1.02M5.6M) 400 (5.62M10M) | 101M (E24E96) 101M (E24) 19.76 (E24) 1.02M5.6M (E24) 5.62M10M (E24) | 200V | 400V | TE: 4,000 |
Performance
| Test Items | Performance Requirements (R(+0.1 )) | Typical | Limit | Test Methods |
| Resistance | Within specified tolerance | |||
| Temperature Coefficient of Resistance (T.C.R.) | Within specified T.C.R. | -25/+25/-55 and +25/+125 | ||
| Overload (Short time) | 1: 1F 0.5: another (1E, 2B, W3A2: Rated voltage 2 for 5s) | 2 | 1: 1F 0.5: another | Rated voltage 2.5 for 5s |
| Resistance to soldering heat | 0.5: 1FW3A (10R1M) 1: 1HW3A (R<10, R>1M) | 1: 1FW3A (10R1M) 3: 1HW3A (R<10, R>1M) | 2605, 10s1s | |
| Rapid change of temperature | 0.5: 1F 0.3: another | 1: 1F 0.5: another | -55 (30min.) /+125 (30min.) 100 cycles | |
| Moisture resistance | 0.75: 1J, 2A, 2B 1.5: 1F 1: another | 2: 1J, 2A, 2B 3: another | 402, 90%95%RH, 1000h (1.5h ON/0.5h OFF cycle) | |
| Endurance at 70 | 0.75: 1J, 2A, 2B 1: another | 2: 1J, 2A, 2B 3: another | 702, 1000h (1.5h ON/0.5h OFF cycle) | |
| High temperature exposure | 0.5: 1F 0.3: another | +125, 1000h: 1F +155, 1000h: 1H,1E, 1J, 2A, 2B, 2E, W2H, W3A, W3A2 |
Precautions for Use
- The substrate of chip resistors is alumina. Cracks may occur at the solder connection due to thermal expansion differences with the mounting board under repeated thermal stress. This is particularly a concern for larger sizes (W2H/W3A/W3A2) with greater thermal expansion and self-heating. Design considerations are needed for applications with significant ambient temperature fluctuations or load ON/OFF cycles.
- RK73H1F resistors may be damaged by static electricity generated during equipment assembly.
2410121632_KOA-RK73H2ATTD4703F_C276230.pdf
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