MELF Type Fixed Metal Film Resistors (RN41/RM41)
The RN41 and RM41 series are MELF (Metal Electrode Leadless Face) type fixed metal film resistors designed for surface mounting. Their cylindrical shape eliminates mounting directionality, and they offer excellent noise characteristics and high electrode strength. These resistors are suitable for reflow, flow, and iron soldering processes and are compliant with EU-RoHS requirements. High-precision versions with resistance tolerances of 0.1% and T.C.R. of 2510-6/K are available. The RN41 series is also AEC-Q200 qualified for specific models (RN41 2ES/3AS).
Product Attributes
- Brand: KOA (implied by www.koaglobal.com)
- Type: MELF (Metal Electrode Leadless Face)
- Material: Metal Film
- Coating Color: RN Blue, RM Green
- Certifications: EU-RoHS, AEC-Q200 (RN41 2ES/3AS)
- Standards: IEC 60115-8, JIS C 5201-8, EIAJ RC-2132A
Technical Specifications
| Type | Inch/DIN Size Code | Dimensions (mm) L x C x D1 Max. | Power Rating | Resistance Tolerance | T.C.R. (10-6/K) | Resistance Range () | Max. Working Voltage (V) | Max. Overload Voltage (V) | Packaging & Q'ty (pcs) |
|---|---|---|---|---|---|---|---|---|---|
| RN41 | 2A (0805/0102) | 2.00.1 x 0.3min x 1.250.05 | 0.125W | 0.1% (B), 0.25% (C), 0.5% (D), 1% (F), 5% (J) | 25, 50, 100, 200 | 100100k | 150 | 200 | Box: 50,000 / Reel: 3,000 |
| RN41 | 2D (1206/0203) | 3.20.2 x 0.5min x 1.550.15 | 0.2W | 0.1% (B), 0.25% (C), 0.5% (D), 1% (F), 5% (J) | 500 | 10604k | 150 | 300 | Box: 36,000 / Reel: 2,000 |
| RN41 | 2ES (1406/0204) | 3.50.2 x 0.50.9 x 1.40.1 | 0.25W | 0.1% (B), 0.25% (C), 0.5% (D), 1% (F), 5% (J) | 250, 500 | 43511k (0.1%), 15.11M (500) | 200 | 400 | Box: 40,000 / Reel: 3,000 |
| RN41 | 2ES (1406/0204) | 3.50.2 x 0.50.9 x 1.40.1 | 0.4W *1,*2 | 0.1% (B), 0.25% (C), 0.5% (D), 1% (F), 5% (J) | 500 | 15.11M (500) | 200 | 400 | Box: 40,000 / Reel: 3,000 |
| RN41 | 2E (0805/0102) | 2.00.1 x 0.3min x 1.250.05 | 0.25W | 0.1% (B), 0.25% (C), 0.5% (D), 1% (F), 5% (J) | 250, 500 | 1001M (250), 101M (500) | 250 | 500 | Box: 10,000 / Reel: 1,500 |
| RN41 | 2H (1206/0203) | 3.20.2 x 0.5min x 1.550.15 | 0.5W | 0.1% (B), 0.25% (C), 0.5% (D), 1% (F), 5% (J) | 200 | 0.22100k | 250 | 600 | Box: 10,000 / Reel: 1,500 |
| RN41 | 3AS (2309/0207) | 5.90.2 x 0.5min x 2.20.10 | 1W *2 | 0.1% (B), 0.25% (C), 0.5% (D), 1% (F), 5% (J) | 500 | 11M (500) | 400 | 600 | Box: 10,000 / Reel: 1,500 |
| RM41 | 2D (1206/0203) | 3.20.2 x 0.5min x 1.550.15 | 0.2W | 5% (J) | 350 | 0.228.2 (E12) | - | - | Box: 36,000 / Reel: 2,000 |
| RM41 | 2H (1206/0203) | 3.20.2 x 0.5min x 1.550.15 | 0.5W | 5% (J) | - | - | - | - | Box: 10,000 / Reel: 1,500 |
Derating Curve
For resistors operated at an ambient temperature of 70 or above, a power rating shall be derated in accordance with the derating curve. For resistors operated at a terminal part temperature of described for each size or above, a power rating shall be derated in accordance with the derating curve. Please refer to "Introduction of the derating curves based on the terminal part temperature" on the beginning of our catalog before use.
Performance
| Test Items | Test Methods | Limit Resistance Changing Attests | Typical |
|---|---|---|---|
| Resistance | Within specified tolerance at 25 | Specified Tolerance | - |
| T.C.R. | Within specified T.C.R. at +25/55 and +25/+125 | Specified T.C.R. | - |
| Overload (Short time) | Rated voltage2.5 for 5s | 0.5 (RN41 2A, 2D, 2H) 0.3 (2ES: Table 1 Test Group D) | - |
| Intermittent overload | Rated voltage4 (2A3) or Max. Intermittent overload voltage, whichever is lower, 10,000 cycles. | 1 (RN41 2A, 2D, 2H) 0.5 (RM41 2E) | - |
| Resistance to soldering heat | 2605, 10s1s | 2 (2H, 10>) 1 (2H, 10) 0.5 (RN 2A-2E) 0.3 (2ES: Table 1 Test Group D) | - |
| Rapid change of temperature | 55 (30min.)/+125 (30min.) 5 cycles | 0.5 (RN41 2A-2E) 1 (RN41 2H) 0.3 (RN41 2A-2E) 0.7 (RN41 2H) 1 (RM41 2ES: Table 1 Test Group D) 0.75 (RM41) | - |
| Moisture resistance | 402, 90%-95%RH, 1000h (1.5h ON/0.5h OFF cycle) | 1.5 (RN41 2D, 2E) 3 (RN41 2A) 5 (RN41 2H) 0.75 (RN41 2D, 2E) 1.5 (RN41 2A) 3 (RN41 2H) 5 (RM41 2ES: Table 1 Test Group C) 3 (RM41) | - |
| Endurance at 70 | 702, 1000h (1.5h ON/0.5h OFF cycle) | 1.0 (RN41 2D, 2E) 3 (RN41 2A) 5 (RN41 2H) 0.5 (RN41 2D, 2E) 1.5 (RN41 2A) 3 (RN41 2H) 5 (RM41 2ES: Table 1 Test Group A) 3 (RM41) | - |
| High temperature exposure | 155, 2hr (RN41 2A, 2D, 2E, 2H) 155, 1000h (RN41 2ES, 3AS) | 1 (RN41) 0.75 (RN41 2ES: Table 1 Test Group C) | - |
Precautions for Use
Avoid ionic impurities such as flux on the product or PCB, as they can negatively affect moisture and corrosion resistance. Ensure thorough cleaning, especially when using lead-free solder. Protect from ionic contaminants like perspiration and salt during storage and handling. Washing is recommended to remove such contaminants.
2410121335_KOA-RN412ESTTE4303B25_C511121.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
