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STMicroelectronics 1.5KE30CARL
- Part No.:
- 1.5KE30CARL
- Manufacturer:
- STMicroelectronics
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE30CARL.pdf
- Description:
- TVS DIODE 25.6VWM 53.5VC DO201
- Quantity:
- Payment:
- Shipping:
Inventory:6,105
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Product details
Overview
1.5KE30CARL 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 30 V nominal breakdown voltage (VBR = 28.5–31.5 V at IR = 1 mA), clamps to ≤41.5 V at 36 A peak pulse current, and features DO-201 axial package with UL 497B certification. It protects MOSFETs, low-voltage ICs, and industrial I/O ports against ESD, lightning surges, and inductive switching transients.
For engineers reviewing the 1.5KE30CARL datasheet, 1.5KE30CARL pinout, 1.5KE30CARL application, or 1.5KE30CARL equivalent, this page provides verified electrical parameters, clamping behavior under standardized surge waveforms, thermal derating curves, junction-to-lead thermal resistance, and bidirectional capacitance (2900 pF at 0 V, 1 MHz), critical for EMI-sensitive analog and communication circuits.
Technical Context
This device operates as a voltage-clamping protector using avalanche breakdown-triggering within nanoseconds when reverse voltage exceeds VBR. Its bidirectional symmetry enables protection on AC-coupled lines or floating buses without polarity concerns. The 20 °C/W junction-to-leads thermal resistance supports reliable power dissipation during repetitive transients up to 5 W on infinite heatsink.
Clamping voltage (VCL) is specified at 41.5 V for 36 A (10/1000 µs waveform), yielding a clamping factor of 1.38 (VCL/VBR(min)). Temperature coefficient αT is +9.7 × 10−4 V/°C, enabling accurate VBR extrapolation across −65 °C to +175 °C operating range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 1500 W (10/1000 µs waveform); sustains single high-energy surges without failure |
| Breakdown Voltage | 28.5–31.5 V @ 1 mA; defines precise conduction threshold for overvoltage triggering |
| Clamping Voltage | ≤41.5 V @ 36 A (10/1000 µs); limits downstream voltage stress during surge events |
| Leakage Current | ≤1 µA @ 24.3 V (90% of VBR(min)); ensures minimal standby power loss and signal integrity |
| Capacitance | 2900 pF @ 0 V, 1 MHz (bidirectional mode); impacts high-frequency signal path loading |
| Junction Temp. Max | 175 °C; enables operation in harsh environments including industrial motor drives |
| Package | DO-201AD (axial leaded); compatible with through-hole PCB assembly and manual rework |
Pinout & Package
1.5KE30CARL uses a two-terminal DO-201AD package with axial leads. No polarity marking distinguishes anode/cathode in bidirectional configuration-both terminals are functionally symmetric for AC transient suppression.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Transient current path terminal | Carries bidirectional surge current; no fixed polarity-connects across protected line and return |
Key Features
| Feature | Design Value |
|---|---|
| Low clamping factor | VCL/VBR(min) = 1.38 ensures tight voltage limiting relative to trigger point |
| Fast response time | <1 ns avalanche turn-on enables protection before sensitive circuitry is damaged |
| UL 497B certified | QVGQ2.E136224 listing validates suitability for telecom and industrial surge protection systems |
| Lead-free & RoHS compliant | ECOPACK® Grade 2 packaging meets environmental compliance without performance trade-offs |
| High surge robustness | Withstands 200 A non-repetitive forward surge (tp = 10 ms) for fault-current handling |
Applications
| Industrial PLC I/O Protection | DC Power Rail Surge Suppression |
|---|---|
Use Scenario: 24 V DC input/output modules in programmable logic controllers exposed to inductive load switching and field wiring transients. IC Role / Device Role: Bidirectional voltage clamp placed across signal line and common rail to shunt surge energy away from isolation amplifiers and microcontrollers. Use Value: Limits transient voltage to ≤41.5 V, preserving 3.3 V/5 V logic supply integrity and preventing latch-up in interface ICs. |
Use Scenario: 30 V nominal DC power bus in factory automation equipment subject to load dump and back-EMF spikes. IC Role / Device Role: Primary TVS element mounted at power entry point to absorb >1 kV/500 A surges per IEC 61000-4-5 Level 4. Use Value: 1500 W peak power rating handles worst-case 10/1000 µs surges while maintaining <1 µA leakage below 24.3 V standby. |
| RS-485 Communication Line Protection | Automotive Body Control Module Inputs |
Use Scenario: Differential data lines in industrial RS-485 networks running alongside AC power cables in noisy factory environments. IC Role / Device Role: Bidirectional TVS connected between A/B lines and ground to suppress common-mode and differential transients. Use Value: 2900 pF capacitance at 0 V is balanced across both lines, minimizing skew and preserving signal rise/fall times up to 10 Mbps. |
Use Scenario: 12 V/24 V sensor inputs (e.g., door switch, rain sensor) in automotive body control units subjected to ISO 7637-2 pulse 1, 2a, and 5a. IC Role / Device Role: Secondary protection stage after LC filtering, clamping fast-rising transients before they reach MCU GPIO pins. Use Value: 30 V VBR aligns with 24 V system nominal voltage, allowing clean operation during cold-crank (6.5 V) and load-dump (35 V) conditions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ30CA | Same VBR (28.5–31.5 V) and VCL (48.4 V @ 31.1 A), but lower 600 W peak power and SMB surface-mount package | Designed for space-constrained PCBs; unsuitable for high-surge legacy industrial designs requiring axial mounting | Select when board area is limited and surge energy does not exceed 600 W |
| 1.5SMC33CA | Higher VBR (28.2–34.7 V), same DO-201 package, but 1500 W rating and 53.9 V VCL @ 28 A | Looser clamping margin (VCL/VBR(min) = 1.91) reduces protection precision for low-voltage ICs | Acceptable only where downstream devices tolerate ≥53 V transient exposure |
Compared with SMBJ30CA and 1.5SMC33CA, 1.5KE30CARL offers superior clamping precision (1.38 factor) and axial mechanical robustness for high-reliability industrial installations, while maintaining full 1500 W surge capacity in a standard through-hole footprint.
Availability
1.5KE30CARL is available at Aetrix Electronics and suitable for industrial PLC I/O protection, DC power rail surge suppression, and RS-485 communication line protection requiring stable component supply and long-term obsolescence management.
Supply support for 1.5KE30CARL 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, designing and manufacturing analog, power, microcontroller, and sensor solutions for industrial, automotive, and consumer markets.
This device belongs to the Transil™ TVS diode product line, engineered specifically for high-energy transient immunity in industrial automation, power conversion, and wired communication infrastructure.
FAQ
What is the maximum clamping voltage for 1.5KE30CARL under IEC 61000-4-5 surge conditions?
The maximum clamping voltage is 41.5 V at 36 A peak pulse current for the standardized 10/1000 µs waveform. This value is measured at Tj = 25 °C and defines the upper voltage limit imposed on protected circuitry during worst-case surge events.
Can 1.5KE30CARL be used in AC line protection applications?
Yes-its bidirectional construction allows direct placement across AC mains or transformer secondaries. However, it must be paired with appropriate current-limiting impedance and thermal management, as its 5 W steady-state power rating applies only with infinite heatsink conditions.
How does temperature affect the breakdown voltage of 1.5KE30CARL?
Breakdown voltage shifts by +9.7 mV/°C (αT = +9.7 × 10−4 V/°C). At 100 °C junction temperature, VBR increases by approximately 0.73 V above its 25 °C value, ensuring stable triggering across the full −65 °C to +175 °C operating range.
Is 1.5KE30CARL suitable for protecting USB or Ethernet data lines?
No-its 2900 pF capacitance at 0 V is too high for high-speed digital interfaces. It is intended for lower-frequency analog signals, power rails, and industrial serial buses (e.g., RS-232/485 at ≤10 Mbps), not USB 2.0 (480 Mbps) or 100BASE-TX Ethernet.
1.5KE30CARL 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):
- 25.6V
- Voltage - Breakdown (Min):
- 28.5V
- Voltage - Clamping (Max) @ Ipp:
- 53.5V
- Current - Peak Pulse (10/1000µs):
- 187A (8/20µs)
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- 1450pF @ 1MHz
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-201
1.5KE30CARL FAQ
1.How can I place an order for 1.5KE30CARL through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE30CARL 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 1.5KE30CARL reliable?
The price and inventory of 1.5KE30CARL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE30CARL is usually 5 days.
3.What payment methods are accepted for 1.5KE30CARL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE30CARL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE30CARL?
1.5KE30CARL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE30CARL 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 1.5KE30CARL?
For technical support, including 1.5KE30CARL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE30CARL requirements.
6.How does Aetrix verify that 1.5KE30CARL is sourced from the original manufacturer or authorized distributors?
All 1.5KE30CARL 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 1.5KE30CARL meets industry standards.
7.What is the process for return or replacement of 1.5KE30CARL?
All 1.5KE30CARL units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE30CARL, 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 1.5KE30CARL part is unused and in its original packaging.
Return procedure for 1.5KE30CARL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE30CARL Tags
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ESD9B5.0ST5G
onsemi
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DESD3V3E1BL-7B
Diodes Incorporated
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onsemi
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Diodes Incorporated
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D5V0P1B2LP-7B
Diodes Incorporated
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Diodes Incorporated
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ESD5Z5.0T1G
onsemi
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DESD5V0U1BB-7
Diodes Incorporated
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D12V0L1B2LP-7B
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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