Industrial Power Control Solution – SEMIKRON SKKH570/16E | SKKH Series
Where This Product Is Used
The SEMIKRON SKKH570/16E is a high-current thyristor (SCR) half-controlled bridge module engineered for demanding industrial power conversion environments. Engineers specify this module in the following application scenarios:
- DC Motor Drive Systems – Phase-controlled rectification for variable-speed DC drives in steel mills, paper machines, and mining hoists where precise torque control is critical.
- Industrial Heating & Furnace Control – Phase-angle firing control for resistance furnaces, induction heating systems, and electrode boilers requiring stable high-power regulation.
- Electrochemical & Electrolytic Processes – Rectifier stacks for electroplating, aluminum smelting, chlor-alkali plants, and hydrogen electrolysis cells demanding continuous high-current DC output.
- Crane & Hoist Power Converters – Controlled rectifier bridges in overhead crane drives and port equipment where regenerative braking and soft-start are required.
- UPS & Battery Charging Systems – High-capacity battery chargers and uninterruptible power supply front-end rectifiers in telecom and data center infrastructure.
- Renewable Energy & Grid Tie – Thyristor-based AC/DC converters in wind turbine pitch control systems and grid-connected energy storage interfaces.
Technical Specifications
| Part Number | SKKH570/16E |
| Brand | SEMIKRON |
| Series | SKKH |
| Module Type | Thyristor Half-Controlled Bridge (SCR + Diode) |
| Repetitive Peak Off-State Voltage (VDRM) | 1600 V |
| Average On-State Current (IT(AV)) | 570 A |
| Peak One-Cycle Surge Current (ITSM) | ≥ 9000 A |
| Gate Trigger Current (IGT) | ≤ 150 mA |
| Gate Trigger Voltage (VGT) | ≤ 3 V |
| On-State Voltage Drop (VT) | ≤ 1.75 V @ IT = 570 A |
| Operating Junction Temperature (Tj) | -40°C to +125°C |
| Thermal Resistance (Rth(j-c)) | ≤ 0.04 K/W (per thyristor) |
| Isolation Voltage (Visol) | 3600 V (RMS, 1 min) |
| Mounting Torque | 5 N·m (M6 screw) |
| Package / Footprint | SEMIKRON SKiiP / SKKH standard flat-base module |
| Weight | approx. 1450 g |
| Cooling | Heatsink required (liquid or forced-air) |
Why Engineers Specify This Model
- Ultra-High Current Rating – 570 A average on-state current handles the most demanding industrial rectifier loads without derating.
- 1600 V Blocking Voltage – Provides robust margin against line transients on 690 V AC bus systems common in heavy industry.
- Half-Controlled Bridge Topology – Integrates SCR and freewheeling diode in a single module, reducing BOM count and PCB/busbar complexity.
- Low Thermal Resistance – Rth(j-c) ≤ 0.04 K/W enables high power density designs with standard aluminum or copper heatsinks.
- SEMIKRON SKKH Platform Compatibility – Drop-in replacement within the SKKH family; compatible with existing gate driver boards and heatsink mounting patterns.
- Proven Field Reliability – SEMIKRON’s SKKH series has decades of deployment in steel, mining, and chemical industries worldwide.
Complete System Bill of Materials
For a complete phase-controlled DC drive or rectifier system using the SKKH570/16E, engineers typically specify:
- SEMIKRON SKKH570/16E – Main thyristor half-bridge module (this item)
- SEMIKRON SKHI22A/B or equivalent – Dual-channel thyristor gate driver
- RC snubber network – dV/dt suppression across each SCR (typically 0.1 µF / 10–47 Ω)
- Fast-acting semiconductor fuse – e.g., Bussmann 170M series, ≥ 700 A, 1000 V
- Aluminum or copper heatsink – Rth(h-a) ≤ 0.02 K/W for full-load operation
- Thermal interface material – Silicone-free phase-change pad or thermal grease
- DC link capacitor bank – Electrolytic, ≥ 1000 µF, rated ≥ 2× DC bus voltage
- Current transducer – LEM HAL or equivalent for closed-loop current control
Compliance & Industry Standards
- IEC 60747-6 – Thyristors: Semiconductor devices
- EN 50178 – Electronic equipment for use in power installations
- RoHS 2 Compliant (Directive 2011/65/EU)
- CE Marked (Low Voltage Directive 2014/35/EU)
- UL Recognized Component (where applicable per SEMIKRON datasheet)
Quality Assurance & Sourcing
All SEMIKRON modules supplied by Konmask.com are sourced through verified industrial distribution channels. Each unit undergoes the following quality checks before dispatch:
- Visual inspection for package integrity, label authenticity, and date code verification
- Blocking voltage continuity check (VDRM/VRRM)
- Gate trigger threshold verification (VGT / IGT)
- Original manufacturer packaging with traceable lot codes
- Anti-static packaging and foam-protected shipping carton
We do not supply remarked, refurbished, or counterfeit components. Certificates of conformance (CoC) and test reports available upon request.
How to Source This Part
- In-Stock Orders: Add to cart and complete checkout — same-day dispatch for orders placed before 15:00 CST.
- Bulk / Project Quantities: Contact us for volume pricing and lead-time commitment: support@konmask.com
- Technical Pre-Sales Support: Our engineers can assist with heatsink selection, gate driver matching, and system integration — reach us at +0086 19859288691.
- Cross-Reference / Equivalents: We can source equivalent modules from ABB, Infineon (formerly Eupec), Vishay, and Littelfuse upon request.
Application-Specific FAQ
Q: Can the SKKH570/16E be used in a fully-controlled (full-bridge) rectifier?
A: No. The SKKH series is a half-controlled bridge (one SCR leg + one diode leg). For a fully-controlled bridge, specify the SKKT series (e.g., SKKT570/16E) which contains two SCR legs.
Q: What heatsink is recommended for continuous 570 A operation?
A: At full rated current, junction losses are approximately 1000 W. A heatsink with Rth(h-a) ≤ 0.02 K/W with forced-air or liquid cooling is required to maintain Tj below 125°C at 40°C ambient.
Q: Is this module compatible with SEMIKRON SKHI-series gate drivers?
A: Yes. The SKKH570/16E gate interface is compatible with SEMIKRON SKHI22A/B and SKHI10/12 dual-channel drivers. Ensure gate resistor Rg is selected per the datasheet firing curve.
Q: What is the difference between SKKH570/16E and SKKH570/16 (without the ‘E’)?
A: The ‘E’ suffix denotes the enhanced isolation version with 3600 V (RMS) isolation voltage versus 3000 V on the standard variant. The ‘E’ version is preferred for 690 V AC bus applications and IEC 61800-5-1 compliance.
Q: Can I parallel two SKKH570/16E modules for higher current?
A: Paralleling thyristor modules requires careful current sharing via matched gate firing and series inductors (di/dt reactors). Consult SEMIKRON application note AN-7003 for paralleling guidelines.
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Contact: support@konmask.com | +0086 19859288691
