SL1002A090SM: High-Performance Gas Discharge Tube (GDT) Arrester by Littelfuse
SL1002A090SM: High-Performance Gas Discharge Tube (GDT) Arrester by Littelfuse
The SL1002A090SM from Littelfuse Inc., a global leader in circuit protection technology, is a premium-grade gas discharge tube (GDT) arrester engineered for superior overvoltage protection. This surface-mount device delivers reliable performance in telecom, industrial, and consumer applications where transient voltage suppression is critical.
In-Depth Product Analysis
Manufacturer Excellence
Littelfuse has been at the forefront of circuit protection innovation for over 90 years. The SL1002A090SM benefits from their extensive R&D in surge protection technologies, meeting rigorous international safety standards including UL, IEC, and RoHS compliance.
Technical Specifications
- Nominal DC Spark-over Voltage: 90V 20%
- Impulse Discharge Current: 5kA (8/20 s waveform)
- Holdover Voltage: 70V minimum
- Operating Temperature: -40 C to +85 C
- Insulation Resistance: >1G
- Capacitance: <1.5pF (typical)
Advanced Protection Features
Precision Voltage Triggering
The 90V spark-over threshold provides optimal protection for low-voltage circuits commonly found in:
- Telecommunication systems (xDSL, T1/E1 lines)
- Industrial control systems (PLC I/O protection)
- Network equipment (Ethernet, PoE applications)
- Automotive electronics (CAN bus protection)
High Surge Capacity
With 5kA surge handling capability (per IEC 61000-4-5), the SL1002A090SM outperforms many competing devices in its class. Independent testing confirms:
- 100+ surge cycles at 5kA
- Fast response time (<1 s)
- Low let-through voltage
Design Advantages
Surface Mount Technology
The 2-SMD package (5.3mm 3.2mm 3.2mm) enables:
- Automated PCB assembly compatibility
- Space-efficient designs for compact electronics
- Improved thermal performance vs. through-hole alternatives
Reliability Engineering
Littelfuse's proprietary gas mixture and electrode design ensure:
- Stable performance over temperature extremes
- Minimal aging effects
- No degradation from repeated surges
Comparative Advantage
When benchmarked against similar GDTs, the SL1002A090SM demonstrates:
| Feature | SL1002A090SM | Typical Competitor |
|---|---|---|
| Surge Current | 5kA | 3kA |
| Response Time | <1 s | 1-5 s |
| Fail Mode | Open Circuit | Short Circuit |
| Lifetime | 100+ surges | 50 surges |
Implementation Guidelines
Circuit Design Tips
- Place GDT at entry points of protected circuits
- Combine with TVS diodes for multi-stage protection
- Maintain proper creepage/clearance distances
- Use 1oz copper traces for high-current paths
Common Applications
- Telecom: Central office equipment, base stations
- Industrial: Motor drives, sensor interfaces
- Consumer: Smart home devices, power adapters
- Transportation: Railway signaling, EV charging
Purchasing Information
The SL1002A090SM is available through authorized distributors worldwide. Typical lead times are 6-8 weeks for production quantities. Evaluation samples can be requested directly from Littelfuse technical support.
For engineers seeking robust overvoltage protection in a compact surface-mount package, the SL1002A090SM represents an optimal balance of performance, reliability, and cost-effectiveness. Its technical superiority makes it the preferred choice for mission-critical applications where circuit protection cannot be compromised.