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Inverters & Drives from TDK

Mixed Media - DC-Link

DC-Link

In a variable frequency drive, power conversion schemes are used which incorporate an intermediate stage where energy is processed at DC. A DC-link capacitor is fitted at this point to provide a low impedance path for high frequency switching currents and to provide energy storage.

DC Link Capacitors - Table

DC link capacitors

Product Type	Series	Technical Data	Datasheet	Features Overview
Capacitor	B43512	4-/5-pin snap-in terminal Rated voltage: 385 … 500V DC Rated Capacitance: 220 … 3300µF Dimensions: 35 x 45 … 50 x 95 mm 85°C, >5000hrs	Download	Voltage derating (0.90 - VR for VR ≤ 450 V) enables 105 °C operation, more details available upon request Diameter 50 mm available Extremely high volumetric efficiency High ripple current capability Pinning ensures correct insertion
Capacitor	B43642	Snap-in terminal Rated voltage: 200 … 450V DC Rated Capacitance: 82 … 3300µF Dimensions: 22 x 25 … 35 x 55 mm 105°C, > 3000hrs	Download	Extremely high CV product, ultra compact, High reliability Very high ripple current capability Optimized internal thermal resistance (for diameter 30 and 35mm) Different case sizes available for each capacitance value
Capacitor	B43544	Snap-in terminal Rated voltage: 200 … 550V DC Rated Capacitance: 47 … 2700µF Dimensions: 25 x 25 … 35 x 55 mm 105°C, > 3000hrs	Download	Outstanding ripple current capability Very high CV product, compact, high reliability Extremely improved performance at high frequencies Very low ESR at operating conditions above 50 °C Different case sizes available for each capacitance value
Capacitor	B43545	Snap-in terminal Rated voltage: 400 … 450V DC Rated Capacitance: 82 … 820µF Dimensions: 25 x 25 … 35 x 55 mm 105°C, > 5000hrs	Download	Outstanding ripple current capability Very high CV product, compact, high reliability Extremely improved performance at high frequencies Outstanding low ESR at operating conditions above 50 °C Different case sizes available for each capacitance value
Capacitor	B43547	Snap-in terminal Rated voltage: 200 … 450V DC Rated Capacitance: 82 … 2200µF Dimensions: 25 x 25 … 35 x 55 mm 105°C, > 8000hrs	Download	Outstanding ripple current capability Very high CV product, compact, high reliability Very long useful life Outstanding low ESR at operating conditions above 50 °C Different case sizes available for each capacitance value
Capacitor	B43703/23	Screw Terminal Rated voltage: 350 … 450V DC Rated Capacitance: 1500 … 22000µF Dimensions: 51.6 x 80.7 … 90 x 197 mm 85°C, >12000hrs	Download	High CV product, i.e. extremely compact High reliability and high ripple current capability All-welded constructions ensures reliable electrical contact Version available with an optimized base cooling design PAPR terminals available (Protection Against Polarity Reversal)
Capacitor	B43704/24	Screw Terminal Rated voltage: 350 … 550V DC Rated Capacitance: 820 … 22000µF Dimensions: 51.6 x 80.7 … 90 x 221 mm 85°C, >12000hrs	Download	High CV product, i.e. very compact High reliability and high ripple current capability All-welded constructions ensures reliable electrical contact PAPR terminals available (Protection Against Polarity Reversal) Version available with an optimized base cooling design
Capacitor	B43705/25	Screw Terminal Rated voltage: 350 … 450V DC Rated Capacitance: 1000 … 18000µF Dimensions: 51.6 x 80.7 … 90 x 221 mm 85°C, >12000hrs	Download	Very high ripple current capability, High reliability All-welded constructions ensures reliable electrical contact PAPR terminals available (Protection Against Polarity Reversal) Version available with an optimized base cooling design Version with low-inductance design available
Capacitor	B3277x	MKP DC-Link High Density Rated Voltage: 450 … 1300 V DC Rated Capacitance: 1.5 … 480 uF	Download	High CV product, compact Good self-healing properties Over-voltage capability Low losses with high current capability High reliability, Long useful life
Capacitor	B3267x	MKP DC-Link High Power Rated Voltage: 300 … 875 V DC Rated Capacitance: 0.47 … 270 uF	Download	High CV product, compact Good self-healing properties Over-voltage capability Low losses with high current capability High reliability, Long useful life
Capacitor	B2562x	MKP DC Power Capacitor Rated Voltage: 700 … 2000 V DC Rated Capacitance: 70µF … 1500 µF	Download	High current capability, Long life time (>100kh) Different terminal configurations (M6-M8) Dry design (PU resin filled) UL Certification
Capacitor	CKG - MLCC Megacap	Size: 3225 … 7563 Temp characteristic: X5R, X7R, X7S, X7T Rated Voltage: 16 … 630V DC Capacitance: 47nF … 100µF	Download	Advanced design for twice the capacitance on single footprint Improved vibration and thermal/mechanical stress performance Lower ESR & ESL than ALU & TA Capacitors
Capacitor	CeraLink - SP (B58033)	Capacitance: 5µF … 20µF Rated voltage: 500 … 900 V DC (IGBT Rated: 650 … 1300 VDC) Solder Pin series	Download	High Capacitance density Low ESL and ESR Low losses at high frequencies and high temperatures High current rating High operating and peak temperatures Ideal for fast-switching semicons (SiC, GaN) LP series qualified based on AEC-Q200 Supports miniaturisation on system level

PTC ICL Thermistors - Table

PTC ICL thermistors

Product Type	Series	Technical Data	Datasheet	Features Overview
PTC ICL	Housed - ICL PTC	Max. voltage: 280 … 560 VAC Rated resistance: 22 … 100 Ω	Download	Self-protecting in case of malfunction of short-circuit relay or internal short circuit of capacitor Encased thermistor disk with clamp contacts for high reliability For high pulse currents and a high number of operating cycles Inrush current limiters are not damaged when directly connected to Vmax even without additional current limitation
PTC ICL	Leaded ICL PTC	Max. voltage: 260 … 560 VAC Rated resistance: 25 … 1100 Ω	Download	Self-protecting in case of malfunction of short-circuit relay or internal short circuit of capacitor Inrush current limiters are not damaged when directly connected to Vmax even without additional current limitation Operating cycles at Vmax (Charging of capacitor): 100 000

Y Caps - Table

Y caps

Product Type	Series	Technical Data	Datasheet	Features Overview
Y Caps	B3202x	Y2 EMI Suppression Capacitor Rated Capacitance: 1 nF … 1 uF Rated Voltage: 300 V AC	Download	Standard EMI Suppression capacitor for EMC filtering Good self healing properties High voltage capabilities & very small dimensions

Power Choke - Table

Power chokes

Product Type	Series	Technical Data	Datasheet	Features Overview
Power Choke for DC BUS	B82726E6*	Rated Current: 20 A … 33 A Rated Inductance: 0.42mH … 2.7mH Rated Voltage: 600 V AC / 1000 V DC	Download	Insulation for high voltage applications Approx. 0.6 … 0.8% stray inductance for symmetrical interference suppression Wide range of values High rated current and rated temperature
Power Choke for DC BUS	B82727E6*	Rated Current: 22 A … 50 A Rated Inductance: 0.57mH … 3.3mH Rated Voltage: 600 V AC / 1000 V DC	Download	Insulation for high voltage applications Approx. 0.6 … 0.8% stray inductance for symmetrical interference suppression Wide range of values High rated current and rated temperature
Power Choke for DC BUS	B82734R8U	Rated Current: 2.6 A … 4.6 A Rated Inductance: 3.3mH … 10mH Rated Voltage: 300 V AC / 800 V DC		Designed for high voltages Glueless design Design complies with EN 60938-2 (VDE 0565-2) UL (please see datasheet)
Power Choke for DC BUS	B82725A/J/S	Rated Inductance: 0.56 mH … 68 mH Rated Current: 1 A … 16 A Rated Voltage: 250 VAC	Download	Approx. 1% stray inductance for symmetrical interference suppression Suitable for wave soldering Design complies with EN 60938-2 (VDE 0565-2) UL1) and/or ENEC (VDE) approvals available
Power Choke for DC BUS	B82726S	Rated Inductance: 0.19 mH … 3.3 mH Rated Current: 10 A … 54 A Rated Voltage: 250 V AC (50/60 Hz)	Download	Designed for high voltages Glueless design Design complies with EN 60938-2 (VDE 0565-2) UL (please see datasheet)

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Inverters and drives brochure

Avnet Abacus offers a comprehensive portfolio of EPCOS and TDK branded products for state-of-the-art inverter and drive design

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Right Rail Card Dark - Protection

Protection

Thermistors acting as inrush current limiters are a low cost solution to this problem whilst input varistors are used to provide surge protection against voltage spikes on the input.

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Right Rail Card Dark - Input Filtering

Input filtering

EMC input filter requirements include limitation of conducted and radiated emissions, immunity to transients and surges on the power lines, and immunity to levels of external electromagnetic radiation and electrostatic discharge.

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Right Rail Card Dark - Rectification

Rectification

Each AC input phase is rectified by 3 diodes (top diode in the positive direction and the low side diode of the other two phases) so that the peak of the negative half cycle appears positive.

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Right Rail Card Dark - Conversion

Conversion

At the conversion stage of a variable frequency drive, the DC voltage is converted into an AC voltage at a given but variable voltage and frequency to drive the motor.

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Right Rail Card Dark - Thermal Management

Thermal management

In a drive, the heatsink’s role is to cool the semiconductors and DC link capacitors and prevent overheating.

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Right Rail Card Dark - Driver and Controller

Driver and controller

The Control and Feedback stages analyse signals from the current sensors mounted at the motor output, measure the temperature of sensors and control the driver for the conversion semiconductors.

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Right Rail Card Dark - Output Filtering

Output filtering

The output stage of a drive takes a three-phase AC output with variable frequency and amplitude for fine speed and torque control and filters it to minimise EMI and provide reliable operation of the power converter and load.

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