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1.5KE400CA
+BOMTVS, 342V, 1500W Bi
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ManufacturerDiotec Semiconductor
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Mfr. Part #1.5KE400CA
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Datasheet 1.5KE400CA DataSheet
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Package DO-201
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In Stock3292
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Specifications
| Attribute | Value |
| Package / Case | Tape & Reel (TR) |
| Part Status | Active |
| Type | Zener |
| Bidirectional Channels | 1 |
| Voltage - Reverse Standoff (Typ) | 342V |
| Voltage - Breakdown (Min) | 380V |
| Voltage - Clamping (Max) @ Ipp | 548V |
| Current - Peak Pulse(10 / 1000µs) | 2.8A |
| Power - Peak Pulse | 1500W (1.5kW) |
| Power Line Protection | No |
| Applications | General Purpose |
| Operating Temperature | -50°C ~ 175°C (TJ) |
| Mounting Type | Through Hole |
Overview
Description
- Bidirectional clamping: Safeguards circuits from both positive and negative voltage surges.
- Peak pulse power: 1500W (for 1ms).
- Standoff voltage: 342V (min), 380V (max).
- Breakdown voltage: 380V (min), 422V (max).
- Low clamping voltage: Limits overvoltage to safe levels.
Applications:
- Surge protection in power supplies, telecom, and industrial systems.
- ESD (electrostatic discharge) protection.
Packaged in a DO-201AD (axial lead) form factor, it offers robust performance for high-energy transient events.
Equivalent
- P6KE400CA (400V, similar specs)
- SMBJ400CA (400V, lower power)
- SA400A (400V, bidirectional)
- SMF400CA (400V, surface-mount)
Check datasheets for exact compatibility in your circuit.
Features
- Voltage Rating: 400V (standoff)
- Peak Pulse Power: 1500W (10/1000µs waveform)
- Breakdown Voltage: 445V (min) to 492V (max)
- Clamping Voltage: 648V (at 50A)
- Bi-directional (CA suffix) for AC/DC protection
- Fast Response Time: <1ns
- Low Leakage Current: <1µA (at standoff voltage)
- DO-201AD (Axial Lead) Package
Ideal for surge protection in power lines, telecom, and industrial applications.
Pinout
- Pin Count: 2 pins (Axial lead package).
- Function: Protects circuits from voltage spikes by clamping excessive voltage (up to 400V peak pulse power). It operates bidirectionally (hence "CA" suffix), meaning it suppresses both positive and negative transients.
Key specs:
- Standoff Voltage (V_RWM): 342V
- Breakdown Voltage (V_BR): 380–420V
- Peak Pulse Power (P_PPM): 1500W (for 1ms).
Commonly used in power supplies, telecom, and automotive systems.
Manufacturer
Littelfuse is a well-established American electronics manufacturer, founded in 1927, known for producing high-reliability components for automotive, industrial, and consumer electronics. The company is recognized for innovations in overvoltage protection, including TVS diodes like the 1.5KE series.
The 1.5KE400CA is designed to protect circuits from voltage spikes and transients, commonly used in power supplies and communication systems. Littelfuse products are widely trusted for their durability and performance in harsh environments.
Application
1. Automotive Electronics – Protects ECUs, sensors, and CAN buses from voltage spikes.
2. Telecommunications – Shields communication lines (RS-485, Ethernet) from ESD and surges.
3. Industrial Equipment – Guards PLCs, motor drives, and power supplies against transients.
4. Consumer Electronics – Secures USB ports, HDMI interfaces, and power inputs.
5. Power Supplies – Clamps voltage surges in AC/DC converters.
With a 400V breakdown voltage and high surge capability, it’s ideal for fast, robust protection in harsh environments.
