SEW BTS20-300-40-IGBT Detailed Product Description

SEW BTS20-300-40-IGBT is a 40A/300V level IGBT power module specifically for SEW BTS20 series servo drives. It provides inverter output, large current switching and short circuit protection for the drives, and is suitable for medium-power servo systems ranging from 5.5 to 11kW. It features low loss, high dynamics and high reliability.

I. Basic Information

Product Series: BTS20 servo drive power module

Full Model: BTS20-300-40-IGBT

Product Type: IGBT power module (three-phase inverter bridge)

Compatible with the entire machine: BTS20-300-40-24 servo drive

Manufacturer: SEW-EURODRIVE

Application Fields: Servo drive inverter, motor control, high-power frequency conversion

Package: Industrial-grade power module (low inductance, high insulation)

Protection: Encapsulation insulation, suitable for cabinet installation

II. Model Meaning Interpretation

BTS20: BTS20 series servo drive dedicated

300: DC bus voltage 300V DC

40: Rated continuous output current 40A

IGBT: Insulated Gate Bipolar Transistor power module

III. Core Technical Parameters

1. Electrical Rated Parameters

Collector-Emitter Voltage Rating (VCES): 600V (300V bus safety margin)

Rated Continuous Current (IC): 40A (TC=25℃); 20A (TC=100℃)

Pulse Peak Current (ICM): 80A (1s)

Gate Voltage (VGES): ±20V

Threshold Voltage (VGE (th)): 4.0–6.0V

Saturation Voltage (VCE (sat)): ≤2.6V@15V/40A

Reverse Parallel Diode: Fast recovery type, 40A continuous current capacity

Insulation Voltage: 2500V AC / 1min

 Junction Temperature Range: -55℃ ~ +150℃

2. Dynamics and Losses

Switching Frequency: 8–16kHz (commonly used in servo drives)

On-Current Loss (Eon): Low-loss design

Off-Current Loss (Eoff): Low-loss, low EMI

Short Circuit Tolerance Time (tsc): ≥10μs (reliable drive protection)

3. Structure and Installation

Package Form: Six-unit three-phase IGBT module

Thermal Resistance (Rth j-c): ≤0.74K/W (efficient heat dissipation)

Installation Method: Screw fixation, with heat sink

Weight: Approximately 0.8kg

IV. Functions and Advantages

1. High Power Density

40A/600V: Compatible with 5.5–11kW servo systems

Low Saturation Voltage: ≤2.6V, low on-resistance, small temperature rise

Low Inductance Design: Reduces peak voltage, improves stability

2. High Dynamic Performance

Fast Switching Speed: Compatible with 8–16kHz carrier

Low Switching Loss: High efficiency, low heat generation at high frequency

Short Circuit Tolerance: 10μs for short circuits, combined with drive protection

3. Reliable and Durable

Wide Junction Temperature Range: -55~+150℃, adaptable to harsh conditions

High Insulation: 2500V isolation, safe and stable

No Aging: Semiconductor lifespan long, maintenance-free

4. Strong Compatibility

Direct Replacement: BTS20-300-40-24 original power module

Matching Drive: SEW dedicated gate driver, optimized protection parameters

Compatible Motors: SEW CMP/CM/CF series servo motors

V. Typical Applications

System Configuration: BTS20 drive + BTS20-300-40-IGBT + servo motor

Power Range: 5.5–11kW three-phase servo Operating conditions: positioning, synchronization, tension, high-speed start and stop

Industry: machine tools, robots, packaging, printing, logistics equipment

VI. Key Points for Use and Maintenance

Heat dissipation: Must be equipped with a heat sink + fan, shell temperature ≤ 80℃

Gate resistor: Use 10–47Ω dedicated driver resistor

Protection: Driver overcurrent, short circuit, overtemperature, undervoltage联动

Installation： Torque 2–3N·m， ensure low thermal resistance contact

VII. Order Information

Model： BTS20-300-40-IGBT

Type： Original power module (spare part)

Guarantee： 12 months

Standard configuration： IGBT module body

VIII. Comparison of Power Modules in the Same Series

BTS20-300-20-IGBT： 20A， compatible with 2.2–5.5kW

BTS20-300-40-IGBT： 40A， compatible with 5.5–11kW (current)

BTS20-300-50-IGBT： 50A， compatible with 11–15kW