EAK’s 380 Series Non-Inductive Bulk Ceramic Slab Resistors are high-performance resistive components designed for applications that demand high power handling, excellent energy absorption, and compact size. These resistors are ideal for engineers working in high-voltage, high-current, or pulse-intensive environments where reliability and non-inductance are critical.
Key Features of the 380 Series
- Inherently Non-Inductive Design : The bulk ceramic construction eliminates parasitic inductance, ensuring stable performance in high-frequency and pulse applications.
- High Power Dissipation : Type SP models offer up to 15 watts per inch of length , providing superior thermal management and volumetric efficiency.
- Excellent Pulse & Overload Capability : Designed to withstand extreme energy surges with minimal resistance change (<±2% after 5 cycles).
- Wide Resistance Range : Available from 0.2Ω to 870kΩ , depending on material type (SP, AS, BA), making them suitable for a broad range of circuit designs.
- Flexible Termination Options : Mounting tabs include radial, axial, low profile, standoff, and custom configurations for easy integration into PCBs and mechanical systems.
- Custom Assembly Ready : Components can be combined in series, parallel, or hybrid arrays to optimize space and power dissipation.
Material Types & Performance Overview
The 380 Series is available in three specialized material types—SP, AS, and BA —each tailored for specific performance requirements:
🔹 Type SP – High Power & Low Resistance
- Ideal for motor drives, dynamic braking, and power supplies
- Resistance range: 0.2Ω to 800Ω
- Power ratings up to 150W (310SP) and energy absorption up to 8,500J
- Max operating temperature: +350°C
- Temperature coefficient: +0.0 to -0.08%/°C
- Peak impulse current: up to 1,000A
🔹 Type AS – High Voltage & Energy Absorption
- Designed for high-voltage power supplies, radar transmitters, capacitor charge/discharge circuits
- Resistance range: 5Ω to 9.2kΩ
- Power ratings up to 60W (310AS) and energy absorption up to 65,000J
- Max operating temperature: +230°C
- Temperature coefficient: +0.0 to -0.08%/°C
- Peak impulse current: up to 200A
🔹 Type BA – High Voltage & High Resistance
- Suitable for voltage balancing, filter circuits, snubber networks, and EMI test equipment
- Resistance range: 1.2kΩ to 870kΩ
- Power ratings up to 48W (310BA) and energy absorption up to 22,000J
- Max operating temperature: +230°C
- Temperature coefficient: +0.0 to -0.2%/°C
Technical Specifications Summary
| Parameter | Type SP | Type AS | Type BA |
|---|---|---|---|
| Resistance Range | 0.2–800Ω | 5–9,200Ω | 1.2k–870kΩ |
| Max Operating Temp | +350°C | +230°C | +230°C |
| Temp Coefficient | +0.0 to -0.08%/°C | +0.0 to -0.08%/°C | +0.0 to -0.2%/°C |
| Peak Impulse Current | Up to 1,000A | Up to 200A | N/A |
| Energy Rating (Typ.) | Up to 8,500J | Up to 65,000J | Up to 22,000J |
Applications
The EAK 380 Series Non-Inductive Ceramic Resistors are engineered for use across a wide variety of industrial and electronic systems, including:
- Motor Drive Controls
- Power Supplies & Conditioning Equipment
- Snubber Circuits
- Dynamic Braking Systems
- RF Dummy Load Circuits
- Capacitor Discharge Networks
- Voltage Balancing & Filtering
- Test Loads & Measurement Equipment
Design Flexibility & Customization
Standard sizes include lengths of 2”, 3”, 4”, 6”, 8”, and 10” , with widths of 1” and thicknesses of ¼” . Custom dimensions and termination configurations are available upon request.
Termination options include:
- Standard aluminum metalized ends
- Radial and axial tin-plated steel tabs (straight, right-angle, or standoff)
- Low-profile and elevated tab styles
- Load Life Stability : ±5% after 1,000 hours at rated power
- Thermal Shock Resistance : ±3% after 10 cycles (-55°C to +125°C)
EAK’s 380 Series Non-Inductive Bulk Ceramic Resistors combine advanced materials, robust design, and customizable features to provide reliable performance in high-power, high-stress applications. Whether you’re designing motor controls, power conditioning systems, or test equipment, the 380 Series offers an optimal balance of power handling, compact size, and longevity.
