Product Overview
The MM Metal Film MELF Resistor series offers SMD-enabled structure with excellent solderability termination. These resistors meet RoHS requirements and are designed for reliability and cost-effectiveness through innovation. They are suitable for various applications requiring precise resistance values and stable performance.
Product Attributes
- Brand: Firstohm
- Product Type: Metal Film MELF Resistor
- Certifications: IEC 60115-1, EN140401-803
- Compliance: RoHS
Technical Specifications
| Type | Power Rating At 70C | Max. Working Voltage | Max. Overload Voltage | Min. Resistance | Max. Resistance | Resistance Tolerance | TCR (ppm/C) | Dimensions (L x D1 x D2, mm) | Net Weight Per 1000 pcs |
|---|---|---|---|---|---|---|---|---|---|
| MM16 | 1/6W | 200V | 400V | 0, 0.51 | 10M | 1% (E-24/E-96), 2%, 5% (E-24) | 25, 50, 100 | 3.52 0.15 x 1.35 0.1 x (D1+0.02/-0.15) | 17 grams |
| MM204 | 1/4W | 200V | 400V | 0, 0.51 | 10M | 1% (E-24/E-96), 2%, 5% (E-24) | 25, 50, 100 | 3.52 0.15 x 1.35 0.1 x (D1+0.02/-0.15) | 17 grams |
| MM207 | 1/3W | 300V | 500V | 0, 0.51 | 10M | 1% (E-24/E-96), 2%, 5% (E-24) | 25, 50, 100 | 5.90 0.20 x 2.20 0.1 x (D1+0.02/-0.2) | 66 grams |
| MM52 | 1/2W | 300V | 500V | 0, 0.51 | 10M | 1% (E-24/E-96), 2%, 5% (E-24) | 25, 50, 100 | 5.90 0.20 x 2.20 0.1 x (D1+0.02/-0.2) | 66 grams |
Performance Specifications
| Characteristic | Test Conditions | Limits |
|---|---|---|
| Short Time Overload | IEC 60115-1 4.13, 5 seconds, 2.5x rated voltage (not over max. overload voltage) | 1.0% |
| Load Life | IEC 60115-1 4.25.1, Rated load, 1,000 hours at (702)C | 1.0% |
| Load Life In Humidity | IEC 60115-1 4.24, 56 days rated load at (402)C and (933)% RH | 1.5% |
| Load Life In Humidity (accelerated) | IEC 60115-1 4.37, 1,000 hours at 85C and 85% RH with 0.1x rated voltage | 2.0% |
| Periodic Electric Overload | IEC 60115-1 4.39, 3.9x rated voltage, 1,000 cycles (0.1s ON, 2.5s OFF) | 1.0% |
| Resistance To Soldering Heat | IEC 60115-1 4.18.2, (2605)C for 101 seconds | 0.5% |
| Thermal Endurance | IEC 60115-1 4.25.3, 1,000 hours at 85C or 125C without load | 1.0% |
| Thermal Shock | IEC 60115-1 4.19, 5 cycles (-55C 30min, +125C 30min) | 0.5% |
| Thermal Shock | IEC 60115-1 4.19, 1,000 cycles (-55C 30min, +125C 30min) | 1.5% |
| Single pulse high voltage overload | IEC 60115-1 4.27, 5 pulses of 1.2/50s at 10x rated voltage | 0.5% |
| Single pulse high voltage overload | IEC 60115-1 4.27, 10 pulses of 10/700s at 10x rated voltage | 0.5% |
| Electrostatic discharge (Human body model) | IEC 60115-1 4.38, 2KV (MM16/MM204) or 4KV (MM207/MM52) | 2.0% |
| Climatic test | IEC 60115-1 4.23, Cyclic (5 days, 55C, 95% RH) | 1.0% |
| Solderability | IEC 60115-1 4.17.2, (2353)C for 20.2 seconds | > 95% |
| Vibration | IEC 60115-1 4.22, 10 to 2,000 Hz, 1.52mm amplitude | 1.0% |
| Bending test | IEC 60115-1 4.33, 2mm pressing depth, 3 times | 0.25% |
| Flammability | IEC 60115-1 4.35, Needle flame test 10s | No burning after 30s |
2410121737_Firstohm-First-Resistor---Condenser-MM204F430RTKRTR3K0_C232995.pdf
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