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STMicroelectronics 1.5KE400CARL
- Part No.:
- 1.5KE400CARL
- Manufacturer:
- STMicroelectronics
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE400CARL.pdf
- Description:
- TVS DIODE 342VWM 706VC DO201
- Quantity:
- Payment:
- Shipping:
Inventory:4,292
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Product details
Overview
1.5KE400CARL from STMicroelectronics is a bidirectional transient voltage suppression (TVS) diode in DO-201 package, designed for high-energy surge protection in power lines and interface circuits. It delivers 1500 W peak pulse power (10/1000 µs), clamps at 548 V (max) under 4 A surge current, and operates up to +175 °C junction temperature - deployed in industrial AC/DC front-ends and telecom power supplies.
For engineers reviewing the 1.5KE400CARL datasheet, 1.5KE400CARL pinout, 1.5KE400CARL application, or 1.5KE400CARL equivalent, key selection criteria include clamping voltage (VCL = 548 V), standoff voltage (VRWM = 400 V), unidirectional/bidirectional configuration, thermal derating above 25 °C, and IEC 61000-4-2/4-4 compliance for ESD and EFT immunity.
Technical Context
This bidirectional TVS diode uses planar junction technology to achieve low leakage (<4.0 µA at 320 V), stable breakdown behavior across -55 °C to +175 °C, and repeatable clamping performance under repetitive 8/20 µs surges up to 706 A. Its dynamic resistance (RD = 20.4 Ω) ensures predictable voltage rise during fast transients.
The device meets IEC 61000-4-2 level 4 (±30 kV air/contact discharge) and IEC 61000-4-4 level 4 (4 kV), with VBR = 342–380 V (min–max at 25 °C) and temperature coefficient αT = 11 × 10−4/°C - enabling accurate VCL calculation across operating junction temperatures.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power (10/1000 µs) | 1500 W - sustains single high-energy surges without failure in AC mains or DC bus protection |
| Standoff Voltage (VRWM) | 400 V - blocks normal operating voltage while remaining fully inactive until transient exceeds threshold |
| Clamping Voltage (VCL, max @ 4 A) | 548 V - limits downstream circuit voltage to safe level during 10/1000 µs surge |
| Junction Temperature Range | −55 °C to +175 °C - supports operation in harsh environments including industrial motor drives and outdoor power systems |
| ESD Withstand (IEC 61000-4-2) | ±30 kV contact/air - exceeds level 4, eliminating need for additional ESD stages in front-end interfaces |
| Dynamic Resistance (RD) | 20.4 Ω - defines linear VCL vs. IPP slope for precise overvoltage margining in design |
| Leakage Current (IR) | ≤4.0 µA @ 320 V - minimizes standby power loss and avoids false triggering in high-impedance sensing paths |
Pinout & Package
1.5KE400CARL is housed in a DO-201 axial leaded package with two terminals: anode and cathode. The bidirectional construction means both terminals are functionally symmetric - no polarity marking required for mounting. Leads are matte tin-plated for solderability and RoHS compliance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Surge current entry (negative transient) | Accepts reverse-biased surge energy when voltage falls below −VBR; forms symmetrical conduction path with cathode |
| Cathode | Surge current entry (positive transient) | Accepts forward-biased surge energy when voltage exceeds +VBR; enables bidirectional clamping without external polarity constraints |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC lines or floating differential buses without polarity awareness |
| High Tj rating (175 °C) | Permits placement near heat-generating components (e.g., rectifiers, transformers) without thermal derating penalties |
| Low dynamic resistance (20.4 Ω) | Reduces clamping voltage overshoot during fast-rising transients, improving system-level immunity margin |
| IEC 61000-4-4 level 4 compliance | Validates robustness against 4 kV electrical fast transients in industrial control cabinets and power distribution units |
| Planar junction construction | Delivers stable VBR and low leakage over lifetime, critical for long-service-life infrastructure equipment |
Applications
| Industrial AC/DC Power Supply Input | Telecom DC Power Distribution |
|---|---|
Use Scenario: Protection of bridge rectifier inputs against lightning-induced surges on 3-phase 400 VAC mains feeding factory automation controllers. IC Role / Device Role / Timing Role: Bidirectional TVS diode placed across L-N and L/N-PE, clamping transients before they reach bulk capacitor and PFC stage. Use Value: Limits peak voltage to ≤548 V during 10/1000 µs surges, preventing dielectric breakdown in 630 V-rated electrolytic capacitors. | Use Scenario: Surge suppression on −48 V DC distribution rails in central office switching equipment exposed to induced surges from nearby power cables. IC Role / Device Role / Timing Role: Standoff-rated TVS mounted at rack input, conducting only during >400 V transients while drawing <4 µA at nominal rail voltage. Use Value: Maintains uninterrupted operation during repeated 4 kV EFT bursts per IEC 61000-4-4, avoiding brownouts or latch-up in downstream DC-DC converters. |
| Outdoor LED Streetlight Driver | Renewable Energy Inverter DC Link |
Use Scenario: Protection of primary-side MOSFETs and controller ICs in off-grid solar-powered streetlight drivers subjected to direct lightning coupling on long PV cable runs. IC Role / Device Role / Timing Role: Bidirectional TVS placed across HV DC bus (400–450 V), absorbing 8/20 µs surges up to 706 A without degradation. Use Value: Prevents gate oxide rupture in 600 V MOSFETs by clamping transient spikes within safe SOA limits defined by VDS rating. | Use Scenario: DC link protection in grid-tied solar inverters where PV array transients couple into 600–1000 V DC bus during rapid cloud transients or fault clearing. IC Role / Device Role / Timing Role: High-power TVS connected between DC+ and DC−, activated only during overvoltage events exceeding 400 V standoff. Use Value: Absorbs up to 1500 W surge energy without thermal runaway, preserving bus capacitor lifetime and avoiding inverter shutdown. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bidirectional TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ400CA | 600 W rating (10/1000 µs), DO-214AA package, lower VCL = 644 V @ 2.3 A | Lower power handling; suited for PCB space-constrained designs with moderate surge exposure | Select when board area is limited and surge threat is ≤600 W; verify thermal relief for continuous operation near Tj max |
| 1N5408G | General-purpose rectifier (3 A avg), no TVS functionality; VR = 1000 V, no clamping spec | Not a TVS device - provides only basic reverse blocking, zero transient suppression capability | Avoid as substitute; lacks specified surge absorption, clamping, or ESD/EFT compliance |
Compared with SMBJ400CA, 1.5KE400CARL offers 2.5× higher peak power and DO-201 mechanical robustness for high-reliability mains-connected systems; unlike 1N5408G, it delivers certified clamping behavior essential for IEC-compliant surge protection.
Availability
1.5KE400CARL is available at Aetrix Electronics and suitable for industrial AC/DC power supply input, telecom DC distribution, and renewable energy inverter DC link applications requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for 1.5KE400CARL includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, delivering automotive, industrial, and power discrete solutions with emphasis on reliability, efficiency, and environmental compliance.
The 1.5KE series belongs to ST's high-power TVS portfolio, engineered specifically for robust overvoltage protection in mains-connected equipment where sustained surge energy and wide temperature operation are mandatory.
FAQ
What is the maximum clamping voltage for 1.5KE400CARL at 4 A surge current?
The maximum clamping voltage (VCL) is 548 V under a 10/1000 µs waveform at 4 A peak current, measured at Tamb = 25 °C. This value increases with junction temperature at a rate defined by αT = 11 × 10−4/°C, requiring derating above ambient.
Is 1.5KE400CARL suitable for AC line protection?
Yes - its bidirectional structure and 400 V standoff rating make it appropriate for L-N or L/N-PE protection in 230/400 VAC systems. It clamps both positive and negative transients symmetrically, and its 175 °C Tj rating supports placement near hot-running magnetics or rectifiers.
How does the DO-201 package affect thermal performance?
The DO-201 axial package provides superior thermal mass and lead-frame conductivity compared to SMD packages like DO-214AA, enabling higher surge energy dissipation before junction overheating. Thermal resistance from junction-to-ambient is ~55 °C/W with standard PCB mounting, supporting reliable 1500 W pulse handling.
Does 1.5KE400CARL meet UL 497B requirements?
Yes - it carries UL 497B file number QVGQ2.E136224, certifying suitability for secondary-circuit surge protection in telecommunications and data equipment. This validates its use in UL-listed power supplies and network interface devices without additional certification overhead.
1.5KE400CARL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- DO-201AA, DO-27, Axial
- Series:
- 1.5KE, TRANSIL™
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 342V
- Voltage - Breakdown (Min):
- 380V
- Voltage - Clamping (Max) @ Ipp:
- 706V
- Current - Peak Pulse (10/1000µs):
- 14A (8/20µs)
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- 195pF @ 1MHz
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-201
1.5KE400CARL FAQ
1.How can I place an order for 1.5KE400CARL through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE400CARL on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for 1.5KE400CARL reliable?
The price and inventory of 1.5KE400CARL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE400CARL is usually 5 days.
3.What payment methods are accepted for 1.5KE400CARL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE400CARL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE400CARL?
1.5KE400CARL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE400CARL order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for 1.5KE400CARL?
For technical support, including 1.5KE400CARL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE400CARL requirements.
6.How does Aetrix verify that 1.5KE400CARL is sourced from the original manufacturer or authorized distributors?
All 1.5KE400CARL products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that 1.5KE400CARL meets industry standards.
7.What is the process for return or replacement of 1.5KE400CARL?
All 1.5KE400CARL units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE400CARL, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The 1.5KE400CARL part is unused and in its original packaging.
Return procedure for 1.5KE400CARL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE400CARL Tags
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ESD9B5.0ST5G
onsemi
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DESD3V3E1BL-7B
Diodes Incorporated
-
ESD5Z3.3T1G
onsemi
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D5V0H1B2LP-7B
Diodes Incorporated
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D5V0P1B2LP-7B
Diodes Incorporated
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DESD5V0U1BA-7
Diodes Incorporated
-
ESD5Z5.0T1G
onsemi
-
DESD5V0U1BB-7
Diodes Incorporated
-
D12V0L1B2LP-7B
Diodes Incorporated
-
PESD2V0Y1BSFYL
Nexperia USA Inc.
-
DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
-
D5V0L1B2WS-7
Diodes Incorporated
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