MKP1848C51012JK2: 1µF 1200V DC-Link Film Capacitor
The Vishay MKP1848C51012JK2 is a 1µF, 1200V DC, ±5% metallized polypropylene film capacitor designed for industrial DC-link filtering. Its 45mΩ typical ESR, 3A RMS current rating, and 85A peak-current capability make it suitable for inverters, UPS systems, battery chargers, motor drives, and other high-voltage power converters.
Part Number
Specifications
| Parameter | Specification |
| Capacitance | 1µF |
| Rated DC voltage | 1200V DC at +85°C |
| Capacitance tolerance | ±5% |
| Dielectric | Metallized polypropylene film |
| Capacitor type | DC-link film capacitor |
| Typical ESR | 45mΩ |
| Maximum RMS current | 3A at 10kHz and +85°C |
| dV/dt rating | 85V/µs |
| Peak current | 85A |
| Maximum ripple voltage | 0.2 × UNDC, equivalent to 240V peak-to-peak |
| Dimensions | 32 × 11 × 21mm |
| Lead spacing | 27.5mm |
| Number of terminals | 2 |
| Lead diameter | 0.8mm |
| Mounting type | Through-hole, radial |
| Rated temperature | +85°C |
| Maximum case temperature | +105°C with voltage derating |
| Climatic category | 55/105/56 |
| Encapsulation | Flame-retardant resin-sealed plastic case |
| Termination | Tinned wire |
| Qualification | Industrial grade, non-automotive |
| Compliance | RoHS compliant, lead-free and halogen-free |
Applications and Design Notes
MKP1848C51012JK2 is intended for high-voltage DC-link filtering in:
Solar and renewable-energy inverters
Industrial motor drives
Uninterruptible power supplies
Battery chargers
DC/DC power converters
Rectifier output stages
Welding and induction-heating equipment
Industrial power supplies
Frequently Asked Questions
What is MKP1848C51012JK2?
It is a Vishay industrial-grade DC-link film capacitor rated at 1µF, 1200V DC, and ±5% tolerance, supplied in a two-pin radial package.
What are its dimensions?
The capacitor body measures approximately 32mm long, 11mm wide, and 21mm high, with a 27.5mm terminal pitch.
What is the ESR of MKP1848C51012JK2?
The datasheet specifies a typical ESR of 45mΩ over the applicable 10kHz to 100kHz frequency range for the 27.5mm-pitch package.
Is this capacitor polarized?
No. Metallized polypropylene film capacitors are non-polarized. Either terminal may be connected to either side of the DC-link circuit, subject to the required PCB layout and electrical clearances.
Can it be used as an AC mains safety capacitor?
No. Vishay states that MKP1848C capacitors are not suitable for across-the-line mains applications without additional protection. Certified X- or Y-class safety capacitors must be used where required by the applicable safety standard.
Can it replace another 1µF 1200V film capacitor?
A replacement must match more than capacitance and voltage. Compare tolerance, RMS current, ESR, dV/dt, peak current, operating temperature, body dimensions, lead pitch, terminal arrangement, lifetime, and qualification requirements.
Is MKP1848C51012JK2 in stock?
Availability changes frequently. Submit an RFQ to confirm current quantity, warehouse location, manufacturing date code, price, and lead time.
