EC7A11
8W railway-certified DC-DC converter with ultra-wide 14.4-154V input for rolling stock applications.
Product Overview
Description
The Cincon EC7A11 is a rugged 8W DC-DC converter specifically designed and certified for railway rolling stock applications. This converter features an ultra-wide input voltage range of 14.4-154VDC, accommodating all standard railway battery systems (24V, 48V, 72V, 96V, 110V) with their full voltage variations and transients per EN 50155. The EC7A11 is fully certified to EN 50155 for railway electronic equipment and EN 50121-3-2 for EMC compliance, ensuring reliable operation in the harsh railway environment. The converter withstands severe conditions including temperature extremes (-40°C to +85°C), high vibration and shock, humidity, and voltage transients. Available output voltages include 5V, 12V, 15V, and 24V at up to 1600mA (5V model). The DIP16 package provides robust through-hole mounting suitable for high-vibration environments. Key features include 3000VDC isolation, high efficiency of 88%, comprehensive protection (SCP, OLP, UVLO), and 1.5 million hour MTBF. The EC7A11 is ideal for train control systems, passenger information systems, railway signaling, door controls, and lighting systems. As an authorized Cincon distributor, BeiLuo provides technical support and railway certification documentation.
Product Series
EC7A
Primary Application
Train control systems
Key Features
- 8W railway-certified DC-DC converter
- Ultra-wide 14.4-154VDC input range
- Covers all railway voltages (24V-110V)
- EN 50155 and EN 50121-3-2 certified
- 3000VDC isolation
- High 88% efficiency
- -40°C to +85°C operation
- Rugged DIP16 package
- 1.5 million hour MTBF
Specifications
| Input Voltage Range | 14.4-154VDC (ultra-wide) |
|---|---|
| Output Voltage | 5V / 12V / 15V / 24V |
| Output Current | Up to 1600mA (5V) |
| Output Power | 8W maximum |
| Efficiency | 88% typical |
| Isolation Voltage | 3000VDC |
| Operating Temperature | -40°C to +85°C |
| Certifications | EN 50155, EN 50121-3-2, UL |
| Package | DIP16 (31.8 x 15.2 x 12.0 mm) |
| MTBF | 1,500,000 hours |
| Vibration | 5-150Hz, 1.0g RMS per EN 50155 |
| Shock | 50g, 11ms per EN 50155 |
Applications
Train control systems
Industrial automation and control
Passenger information systems
Electronic system design
Railway signaling equipment
Sensor signal conditioning
Door and gate controls
Industrial automation and control
Interior and exterior lighting
Electronic system design
Communication systems
Communication and interface
CCTV and security
Electronic system design
HVAC controls
Industrial automation and control
FAE Expert Insights
"The EC7A11 is the gold standard for railway power applications. The full EN 50155 certification gives confidence for railway projects, and the ultra-wide 14.4-154V input eliminates voltage compatibility issues across different train systems. I've used this converter in train control systems, passenger information displays, and railway signaling with excellent results. The converter handles all standard railway transients internally, simplifying system design. The rugged DIP16 package withstands severe vibration and shock. The 88% efficiency is excellent for such a wide input range. For any railway rolling stock application, this converter is my top recommendation. The certification documentation package simplifies approval with railway operators. While more expensive than industrial alternatives, the railway certification and ruggedization are essential for these critical applications."
I highly recommend the EC7A11 for its proven reliability.
— Senior FAE Team, BeiLuo
Frequently Asked Questions
What railway voltages does the EC7A11 support?
The EC7A11 supports all standard railway voltages with the ultra-wide 14.4-154V input: 24V systems: Nominal 24V, range 16.8-30V continuous, 14.4-33.6V temporary; 48V systems: Nominal 48V, range 33.6-60V continuous, 28.8-67.2V temporary; 72V systems: Nominal 72V, range 50.4-90V continuous, 43.2-100.8V temporary; 96V systems: Nominal 96V, range 67.2-120V continuous, 57.6-134.4V temporary; 110V systems: Nominal 110V, range 77-137.5V continuous, 66-154V temporary. The 14.4-154V range covers all these with margin. This means: One converter SKU for all railway voltages; No voltage selection switches; Simplified inventory; Reduced qualification time. For new railway projects, the EC7A11 works regardless of the nominal voltage selected. For existing systems, it replaces multiple voltage-specific converters. Contact our FAE team for railway voltage application notes.
EC7A11 covers 24V-110V railway systems. Single SKU for all voltages. Contact us for application support.
How does the EC7A11 handle voltage interruptions?
The EC7A11 handles voltage interruptions per EN 50155 requirements: Short interruptions: <10ms: No effect on output; 10-30ms: May see output dip, remains operational; >30ms: Output may drop, auto-recovers when input returns. EN 50155 requirements: S2 class: 10ms interruption (standard); S3 class: 20ms interruption; S4 class: Custom requirement. For interruption ride-through: Internal capacitance provides ~10ms hold-up; External hold-up capacitor extends ride-through; Calculate required capacitance: C = (2 × P × t) / (V² - Vmin²); Where P=8W, t=required time, V=input voltage, Vmin=14.4V. For critical applications: Size hold-up capacitor for required time; Consider UPS or battery backup; Implement power-fail warning. The EC7A11 automatically recovers when input returns with soft-start to limit inrush. Contact our FAE team for hold-up design calculations.
10ms internal hold-up standard. Add external capacitor for longer. Contact us for hold-up design.
What is the vibration and shock rating of the EC7A11?
The EC7A11 is rated for severe railway vibration and shock per EN 50155: Vibration: Random vibration: 5-150Hz, 1.0g RMS; Sine vibration: For resonance detection; Duration: Tested for extended periods; Axes: Tested on X, Y, Z axes. Shock: Half-sine shock: 50g peak, 11ms duration; Number of shocks: 3 per direction, 6 directions; Total: 18 shocks. Railway conditions: Rolling stock experiences continuous vibration; Switches and crossings cause shock; Temperature cycling adds stress. The EC7A11 design: Rugged DIP16 package with secure mounting; High-reliability components; Conformal coating available; Reinforced internal construction. For installation: Use proper PCB mounting with adequate solder; Consider potting for severe environments; Ensure connector retention; Follow EN 50155 installation guidelines. The EC7A11 passes all required tests and is proven in railway applications worldwide. Contact our FAE team for vibration and shock specifications.
Rated for 50g shock, 1.0g RMS vibration. Rugged DIP16 package. Contact us for installation guidelines.
Can the EC7A11 be used in wayside railway equipment?
The EC7A11 is designed for rolling stock (onboard) applications per EN 50155. For wayside equipment (trackside, stations), consider: EN 50121-4: EMC standard for wayside equipment; Environmental: May have different requirements than onboard; Input power: May be from different sources (AC mains, local DC). The EC7A11 can be used in wayside applications if: Input voltage is within 14.4-154V range; Environmental conditions are within ratings; EMC requirements are met with filtering. For wayside applications: Verify input voltage source and range; Check environmental conditions (temperature, humidity); Add appropriate filtering for EMC; Consider enclosure for environmental protection. Common wayside applications: Signal control cabinets; Platform equipment; Trackside monitoring; Station controls. For dedicated wayside power supplies, Cincon offers other products. Contact our FAE team for wayside application guidance.
Designed for rolling stock. Can be used wayside with verification. Contact us for wayside guidance.
What is the MTBF of the EC7A11 in railway applications?
The EC7A11 has a rated MTBF of 1,500,000 hours at 25°C per MIL-HDBK-217F. For railway applications, actual MTBF depends on: Temperature: Railway environments often 40-60°C; MTBF decreases with temperature; At 60°C, MTBF approximately 400,000 hours. Vibration: Continuous vibration can reduce MTBF; EN 50155 vibration factored into rating. Load: Operating at 100% vs 50% load affects MTBF; Derating improves reliability. Environment: Clean vs dusty/humid conditions; Protection from contamination helps. For railway reliability: Use conservative derating (50-70% load); Ensure adequate cooling; Protect from contamination; Implement condition monitoring if possible. The 1.5M hour rating at 25°C provides good baseline reliability. For critical railway systems, consider redundancy. Contact our FAE team for reliability analysis and MTBF calculations for your specific application.
1.5M hours at 25°C. Derate for temperature and load. Contact us for reliability analysis.