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STMicroelectronics 1.5KE440CARL
- Part No.:
- 1.5KE440CARL
- Manufacturer:
- STMicroelectronics
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE440CARL.pdf
- Description:
- TVS DIODE 376VWM 776VC DO201
- Quantity:
- Payment:
- Shipping:
Inventory:5,420
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Product details
Overview
1.5KE440CARL from STMicroelectronics is a bidirectional Transil™ TVS diode designed for high-energy transient voltage suppression in DC power lines and signal interfaces. It delivers 1500 W peak pulse power (10/1000 µs), has a 440 V standoff voltage (VRM), 418–462 V breakdown range (VBR @ 1 mA), and clamps to ≤603 V at 13 A peak pulse current - protecting industrial motor drives, telecom power supplies, and AC/DC front-ends against lightning-induced surges.
For engineers reviewing the 1.5KE440CARL datasheet, 1.5KE440CARL pinout, 1.5KE440CARL application, or 1.5KE440CARL equivalent, this page provides verified electrical parameters, DO-201 package details, clamping behavior under standardized surge waveforms, and validated alternatives for overvoltage protection design in high-voltage industrial systems.
Technical Context
This device operates as a voltage-clamping transient suppressor with fast response time (<1 ns) and low dynamic impedance (3.5 Ω typical). Its bidirectional configuration enables symmetrical protection of AC-coupled or floating circuits without polarity constraints.
It exhibits a 11 mV/°C voltage temperature coefficient (αT) and 360 pF capacitance at 0 V (1 MHz), making it suitable for high-impedance, low-frequency protection where capacitive loading must remain below 400 pF - unlike lower-voltage variants optimized for data-line ESD.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 1500 W (10/1000 µs waveform) - sustains single lightning-surge events per IEC 61000-4-5 Level 4 without failure |
| Standoff Voltage (VRM) | 440 V - maximum continuous reverse operating voltage before leakage exceeds 1 µA |
| Breakdown Voltage (VBR) | 418–462 V @ 1 mA - ensures reliable triggering above system nominal voltage with margin |
| Clamping Voltage (VCL) | ≤603 V @ 13 A (10/1000 µs) - limits downstream voltage stress to safe levels for 600 V-rated MOSFETs and rectifiers |
| Leakage Current (IRM) | 1 µA @ 440 V - negligible power loss in high-impedance bias networks |
| Capacitance (C) | 360 pF @ 0 V, 1 MHz - compatible with <1 MHz analog sensing and relay control circuits |
| Junction Temp. Max | 175 °C - supports operation in enclosed industrial enclosures with ambient up to 125 °C |
Pinout & Package
1.5KE440CARL uses the DO-201 axial-leaded package (8.5–9.5 mm length × 4.8–5.3 mm diameter), lead-free and UL94 V0 compliant. Leads are tinned copper, rated for 230 °C soldering (10 s, 5 mm from case).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Lead 1) | Transient current entry (bidirectional) | Functions as cathode during positive transients; no fixed polarity - symmetric conduction |
| Cathode (Lead 2) | Transient current exit (bidirectional) | Functions as anode during negative transients; identical clamping behavior in both directions |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC lines, transformer secondaries, and differential bus interfaces without external polarity management |
| Low clamping factor (VCL/VBR ≈ 1.45) | Minimizes overvoltage overshoot relative to breakdown threshold - critical for 600 V silicon devices with narrow SOA margins |
| UL 497B certified (QVGQ2.E136224) | Validated for use in telecom and industrial surge protection modules requiring third-party safety compliance |
| 175 °C max junction temperature | Supports mounting on high-thermal-mass PCBs near heat-generating components (e.g., PFC stages) without derating |
| ECOPACK® lead-free construction | Meets RoHS Directive 2011/65/EU and JEDEC J-STD-020 moisture sensitivity level 1 (unlimited floor life) |
Applications
| Industrial Motor Drive DC Bus | Telecom AC/DC Power Supply Input |
|---|---|
Use Scenario: Protection of 400 V DC bus against load dump and inductive kickback in 3-phase VFDs. IC Role / Device Role / Timing Role: Voltage-clamping transient suppressor placed across bulk capacitor terminals. Use Value: Limits transient spikes to ≤603 V, preventing gate oxide rupture in 600 V IGBTs and sustaining bus voltage integrity during rapid deceleration. |
Use Scenario: Surge suppression on primary-side rectified AC input of -48 V telecom power systems. IC Role / Device Role / Timing Role: Bidirectional shunt protector between L/N and earth, triggered within <1 ns. Use Value: Absorbs 1500 W IEC 61000-4-5 combination wave surges while maintaining <1 µA leakage at 440 V RMS line-to-line. |
| AC Line Surge Protection Module | High-Voltage Sensor Interface |
Use Scenario: Component in DIN-rail mounted SPDs for building automation mains input (230/400 V AC). IC Role / Device Role / Timing Role: Primary clamping element in coordinated cascade with MOVs and gas discharge tubes. Use Value: Provides precise, repeatable clamping at 440 V with minimal follow-on current - enabling compact thermal design vs. MOV-only solutions. |
Use Scenario: Overvoltage guard for isolated voltage dividers measuring 380 V AC phase-to-phase in smart metering. IC Role / Device Role / Timing Role: Fail-safe clamp connected across divider output to protect ADC input stage. Use Value: 360 pF capacitance avoids signal distortion at 50/60 Hz; 1 µA leakage prevents measurement offset drift in precision metering circuits. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ440CA | Same 440 V VRM, but 600 W rating (SMB package, smaller footprint) | Limited to lower-energy surges (IEC 61000-4-5 Level 3); unsuitable for 1500 W industrial test profiles | Select when board space is constrained and surge energy does not exceed 600 W |
| 1.5SMC440CA | Same 440 V VRM and 1500 W rating, but SMC package (surface-mount) | Requires reflow-compatible layout; lacks axial leads for through-hole chassis grounding paths | Select for automated assembly and high-volume production where mechanical robustness is secondary to placement density |
Compared with SMBJ440CA and 1.5SMC440CA, 1.5KE440CARL offers superior thermal mass and axial-lead grounding flexibility for high-reliability industrial surge protection, while maintaining identical clamping performance at full 1500 W rating.
Availability
1.5KE440CARL is available at Aetrix Electronics and suitable for industrial motor drives, telecom power supplies, AC line surge protection modules, and high-voltage sensor interfaces requiring stable component supply across extended product lifecycles.
Supply support for 1.5KE440CARL 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, specializing in power management, automotive ICs, and discrete protection devices with vertical manufacturing capability.
This part belongs to the Transil™ TVS diode family, engineered specifically for high-energy transient suppression in industrial, telecom, and energy infrastructure applications where reliability under repeated surge stress is mandatory.
FAQ
What is the maximum allowable surge current for 1.5KE440CARL under IEC 61000-4-5 testing?
The device clamps to ≤603 V at 13 A peak pulse current for the 10/1000 µs waveform, corresponding to 1500 W peak power. Its absolute maximum non-repetitive surge current is 13 A for that waveform; exceeding this risks short-circuit failure per Table 1 note 1.
Can 1.5KE440CARL be used in AC line-to-line protection at 400 V RMS?
Yes - its 440 V VRM rating exceeds the 400 V RMS line-to-line voltage (566 V peak), providing 126 V margin. The bidirectional structure allows direct connection across L-L or L-N without polarity concerns, and its 175 °C junction rating supports sustained operation in enclosed panels.
How does the 360 pF capacitance affect its use in high-frequency circuits?
This capacitance is measured at 0 V and 1 MHz; it decreases significantly under reverse bias (e.g., <50 pF at 400 V). It is unsuitable for data lines >1 MHz but poses no risk in 50/60 Hz power monitoring, relay control, or analog sensor interfaces where bandwidth remains below 10 kHz.
Is 1.5KE440CARL compliant with RoHS and REACH regulations?
Yes - it carries ECOPACK® certification, confirming lead-free terminations and compliance with EU RoHS Directive 2011/65/EU and REACH SVHC requirements. The epoxy body meets UL94 V0 flammability standard, and full material declarations are available via ST's product change notifications.
1.5KE440CARL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- DO-201AA, DO-27, Axial
- Series:
- 1.5KE, TRANSIL™
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 376V
- Voltage - Breakdown (Min):
- 418V
- Voltage - Clamping (Max) @ Ipp:
- 776V
- Current - Peak Pulse (10/1000µs):
- 13A (8/20µs)
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- 180pF @ 1MHz
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-201
1.5KE440CARL FAQ
1.How can I place an order for 1.5KE440CARL through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE440CARL 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 1.5KE440CARL reliable?
The price and inventory of 1.5KE440CARL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE440CARL is usually 5 days.
3.What payment methods are accepted for 1.5KE440CARL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE440CARL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE440CARL?
1.5KE440CARL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE440CARL 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 1.5KE440CARL?
For technical support, including 1.5KE440CARL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE440CARL requirements.
6.How does Aetrix verify that 1.5KE440CARL is sourced from the original manufacturer or authorized distributors?
All 1.5KE440CARL 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 1.5KE440CARL meets industry standards.
7.What is the process for return or replacement of 1.5KE440CARL?
All 1.5KE440CARL units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE440CARL, 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 1.5KE440CARL part is unused and in its original packaging.
Return procedure for 1.5KE440CARL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE440CARL Tags
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Diodes Incorporated
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Nexperia USA Inc.
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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