Automotive-grade MLCCs rated for extended high-temp operation at 200C

October 31, 2017 //By Graham Prophet
Automotive-grade MLCCs rated for extended high-temp operation at 200C
Vishay Intertechnology’s HOTcap K…H Series of radial-leaded, through-hole multi-layer ceramic capcitors (MLCCs) are built for the most extreme automotive operating conditions; +200C is claimed as the industry’s highest for Ceramic Class 2 through-hole devices.

These MLCCs are now approved for operation over a temperature range of -55C to +200C for 500 hours, and provide unlimited operation to +175C. The devices combine their high temperature performance with a capacitance range from 100 pF to 1 µF and low capacitance tolerances as tight as ±5%.

 

Suitable for EMI filtering in sensors and DC motors in the most extreme automotive environments, K…H series capacitors are equipped with a high reliability MLCC insert produced in a unique wet build process and featuring noble metal electrodes. AEC-Q200 qualified with PPAP available on request, the leaded MLCCs are more robust to mechanical stress and can withstand higher operating temperatures than SMD parts, while saving space by eliminating the need for a PCB.

 

The Ceramic Class 1 and 2 MLCCs feature an ultra-stable C0G dielectric with a capacitance change of ± 30 ppm/K and a X0U dielectric with TCC of +22% / -56% from -55C to +175C. The X0U dielectric also fulfills the X7R specification of ±15% from -55C to +125C and the X9V specification of +22% / -82% from -55C to +200C. For direct welding on lead frames and / or overmoulding with plastic, the devices offer straight or crimped leads with spacing of 2.5 mm and 5.0 mm. Their lead wires measure 0.5 mm or 0.6 mm and are constructed of 100 % tinned copper-clad steel.

 

Lead (Pb)-free, RoHS-compliant, and halogen-free, the capacitors offer a coating made of flame-retardant epoxy resin in accordance with UL 94 V-0.

 

 








Ceramic class

1

2

Ceramic dielectric

C0G

X0U

Voltage (VDC)

50

100

200

50

100

200

Min. capacitance (pF)

100

100

100

10,000

10,000

10,000

Max. capacitance (pF)

12,000

12,000

8,200

1,000,000

470,000

180,000

 

Samples and production quantities of the extended K...H series are available now, with lead times of eight weeks. Sample kits are available from Vishay’s catalogue distributors, with the part number HOTC-KIT-KH.

 


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