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Vishay General Semiconductor - Diodes Division 1.5KE150CA-E3/73
- Part No.:
- 1.5KE150CA-E3/73
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE150CA-E3/73.pdf
- Description:
- TVS DIODE 128VWM 207VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:3,013
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Product details
Overview
1.5KE150CA-E3/73 from Vishay General Semiconductor is a bidirectional Transient Voltage Suppressor (TVS) diode designed for robust overvoltage protection in power and signal lines. It features a 150 V breakdown voltage (VBR = 143–158 V), 1500 W peak pulse power (10/1000 µs), clamping voltage of 207 V at 7.2 A, and operates across –55 °C to +175 °C junction temperature. It protects MOSFETs, ICs, and sensor interfaces against lightning-induced surges and inductive switching transients in industrial and automotive systems.
For engineers reviewing the 1.5KE150CA-E3/73 datasheet, 1.5KE150CA-E3/73 pinout, 1.5KE150CA-E3/73 application, or 1.5KE150CA-E3/73 equivalent, this page delivers verified electrical parameters, JEDEC 1.5KE package details, bidirectional clamping behavior, thermal derating curves, and RoHS-compliant commercial-grade sourcing - all critical for surge protection layout validation and BOM selection.
Technical Context
This device implements an avalanche-based silicon junction structure with glass passivation, enabling sub-nanosecond response time (<1 ns) and low incremental surge resistance. Its bidirectional symmetry ensures identical clamping performance in both polarities, validated per IEC 61000-4-5 and UL 497B standards.
The 1.5KE150CA-E3/73 operates without biasing circuitry and requires no external control signals. Its 1500 W peak pulse rating is defined at TA = 25 °C with 0.01 % duty cycle, and thermal derating follows a linear curve down to zero power at TL = 175 °C per Figure 5 in Document 88301.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 143 V / 158 V at 1 mA test current - defines reliable avalanche initiation threshold under transient stress |
| VWM | 128 V - maximum continuous reverse working voltage before leakage exceeds 1 µA |
| VC @ IPPM | 207 V at 7.2 A peak pulse - clamping voltage limiting downstream component stress during 10/1000 µs surge |
| PPPM | 1500 W - peak transient power handling capability with JEDEC-standard 10/1000 µs waveform |
| TJ range | –55 °C to +175 °C - enables deployment in under-hood automotive, industrial motor drives, and outdoor telecom equipment |
| RθJA | 75 °C/W - thermal resistance from junction to ambient, informs heatsinking requirements for repetitive surge events |
| Capacitance | ~100 pF at 1 MHz, 0 V - low enough to avoid signal integrity degradation on data lines up to ~100 Mbps |
Pinout & Package
Package: JEDEC DO-201AD (Case Style 1.5KE), axial-leaded molded epoxy body, RoHS-compliant matte tin-plated leads. Dimensions: 5.3 mm diameter × 9.5 mm length, lead spacing 7.2 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point in forward conduction mode | Not marked; bidirectional symmetry means either lead serves as anode or cathode depending on transient polarity |
| Cathode | Current exit point in forward conduction mode | No color band or marking - device lacks polarity identification due to bidirectional construction |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Enables stable avalanche characteristics and long-term reliability under repeated surge stress |
| 1500 W peak pulse power (10/1000 µs) | Supports protection against Level 4 IEC 61000-4-5 surges (4 kV line-to-ground) without derating |
| Sub-nanosecond response time | Clamps transients before sensitive downstream logic or analog circuits experience overvoltage damage |
| UL 497B recognized (QVGQ2) | Validates suitability for telecom and industrial interface protection requiring safety agency approval |
| RoHS-compliant E3 suffix | Meets JESD 201 Class 1A whisker resistance, suitable for high-reliability commercial applications |
Applications
| Industrial Motor Drives | Automotive Body Control Modules |
|---|---|
|
Use Scenario: Protection of gate drivers and microcontroller I/O against back-EMF spikes from relay and solenoid switching. IC Role / Device Role / Timing Role: Bidirectional clamping element placed across DC bus or signal lines to limit transient excursions to ≤207 V. Use Value: Prevents latch-up and permanent gate oxide damage in 40 V–60 V MOSFETs during 1500 W inductive kick events. |
Use Scenario: Shielding LIN bus transceivers and sensor inputs from load dump and jump-start transients. IC Role / Device Role / Timing Role: Standoff voltage (128 V) exceeds ISO 16750-2 load dump peak (120 V), enabling fail-safe operation. Use Value: Maintains communication integrity during 12 V system surges up to 200 V without signal distortion or reset events. |
| Telecom Power Feeds | Consumer Appliance Control Boards |
|
Use Scenario: Safeguarding PoE-powered Ethernet PHYs and DC-DC controllers from lightning-induced common-mode surges on twisted-pair lines. IC Role / Device Role / Timing Role: Paired bidirectionally across differential pairs to clamp mode-common transients while preserving signal fidelity. Use Value: Limits induced voltage to <207 V, preventing damage to 100BASE-TX magnetics and PHY ESD structures rated to 2 kV HBM. |
Use Scenario: Protecting MCU reset lines and display interface traces from ESD and relay bounce in washing machine control panels. IC Role / Device Role / Timing Role: Low-capacitance (≈100 pF) TVS placed directly at connector entry points to shunt fast transients before routing to IC pins. Use Value: Eliminates field failures caused by >8 kV contact ESD events without degrading 1–10 MHz SPI/I²C timing margins. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ150CA | DO-214AA package, lower PPPM = 600 W, same VBR range (143–158 V), higher capacitance (~200 pF) | Better suited for space-constrained PCBs but unsuitable for >1 kV surge environments requiring 1500 W margin | Select when board area is limited and peak surge energy is ≤600 W; verify layout clearance for SMB footprint vs. axial 1.5KE |
| 1.5KE150A-E3/73 | Unidirectional version; identical VBR, VC, and PPPM, but includes cathode band marking and forward voltage spec (VF = 5.0 V @ 100 A) | Required only where DC bias exists and polarity-sensitive clamping is needed (e.g., DC power rail protection) | Choose 1.5KE150A-E3/73 if protecting a unidirectional supply rail; otherwise, 1.5KE150CA-E3/73 provides symmetric protection with no polarity constraints |
Compared with SMBJ150CA and 1.5KE150A-E3/73, the 1.5KE150CA-E3/73 uniquely combines 1500 W surge capacity, bidirectional symmetry, axial through-hole mounting for high-current trace routing, and UL 497B recognition - making it optimal for high-energy industrial and automotive transient suppression where polarity independence and safety certification are mandatory.
Availability
1.5KE150CA-E3/73 is available at Aetrix Electronics and suitable for industrial motor drives, automotive body electronics, telecom power feeds, and consumer appliance control boards requiring stable component supply and full traceability.
Supply support for 1.5KE150CA-E3/73 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
Vishay General Semiconductor is a global leader in discrete semiconductors, specializing in diodes, rectifiers, and protection devices with emphasis on reliability, surge robustness, and automotive qualification.
The 1.5KE series was engineered specifically for high-energy transient suppression in harsh environments, targeting applications where failure modes include lightning strikes, inductive switching, and load dump - not general-purpose ESD clamping.
FAQ
What is the clamping voltage of the 1.5KE150CA-E3/73 under a 10/1000 µs surge?
The 1.5KE150CA-E3/73 clamps to a maximum of 207 V at its rated peak pulse current of 7.2 A, as specified in the Electrical Characteristics table of Vishay Document 88301. This value is measured with the standardized 10/1000 µs waveform and represents the upper bound of voltage seen by protected circuitry during a full-power transient event. The actual clamping voltage will be lower at reduced surge currents, following the incremental clamping curve in Figure 9.
Is the 1.5KE150CA-E3/73 suitable for automotive applications?
Yes, the 1.5KE150CA-E3/73 meets key automotive requirements: it operates from –55 °C to +175 °C, is UL 497B recognized (QVGQ2), and supports load dump immunity up to 128 V standoff. While the base E3 suffix is commercial grade, AEC-Q101 qualified versions exist under the HE3 suffix (e.g., 1.5KE150CAHE3_B). For non-safety-critical body electronics, the 1.5KE150CA-E3/73 is widely deployed; for ASIL-B/C systems, confirm qualification status via Vishay's official part numbering matrix.
How does the 1.5KE150CA-E3/73 differ from the unidirectional 1.5KE150A-E3/73?
The 1.5KE150CA-E3/73 is bidirectional with symmetrical clamping in both polarities and no polarity marking, whereas the 1.5KE150A-E3/73 is unidirectional, features a cathode band, and specifies forward voltage (VF = 5.0 V at 100 A). Both share identical VBR, VC, and PPPM. Use 1.5KE150CA-E3/73 for AC-coupled or polarity-agnostic protection; choose 1.5KE150A-E3/73 only when protecting a DC rail with known polarity and need for forward conduction capability.
What is the thermal resistance of the 1.5KE150CA-E3/73, and how does it affect layout?
The 1.5KE150CA-E3/73 has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W and junction-to-lead (RθJL) of 15.4 °C/W. In practice, this means that without heatsinking, sustained average power above ~6.5 W will exceed the 175 °C max junction temperature. Layout best practices include using wide copper pours connected to both leads, minimizing trace length, and avoiding thermal isolation - especially important in repetitive surge scenarios such as motor drive PWM noise suppression.
Does the 1.5KE150CA-E3/73 require a series impedance for proper operation?
No, the 1.5KE150CA-E3/73 functions as a parallel-connected protector and does not require a series resistor or inductor to operate. However, adding a small series impedance (e.g., 1–10 Ω) between the TVS and protected node can reduce peak current stress on the diode during very fast transients (e.g., ESD), improve longevity under repetitive events, and prevent oscillatory ringing. Such design choices must be validated with SPICE simulation using the device's SPICE model or measured dynamic IV curves.
1.5KE150CA-E3/73 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-201AA, DO-27, Axial
- Series:
- TransZorb®
- Packaging:
- Tape & Box (TB)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 128V
- Voltage - Breakdown (Min):
- 143V
- Voltage - Clamping (Max) @ Ipp:
- 207V
- Current - Peak Pulse (10/1000µs):
- 7.2A
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 1.5KE
1.5KE150CA-E3/73 FAQ
1.How can I place an order for 1.5KE150CA-E3/73 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE150CA-E3/73 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 1.5KE150CA-E3/73 reliable?
The price and inventory of 1.5KE150CA-E3/73 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE150CA-E3/73 is usually 5 days.
3.What payment methods are accepted for 1.5KE150CA-E3/73?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE150CA-E3/73 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE150CA-E3/73?
1.5KE150CA-E3/73 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE150CA-E3/73 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 1.5KE150CA-E3/73?
For technical support, including 1.5KE150CA-E3/73 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE150CA-E3/73 requirements.
6.How does Aetrix verify that 1.5KE150CA-E3/73 is sourced from the original manufacturer or authorized distributors?
All 1.5KE150CA-E3/73 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 1.5KE150CA-E3/73 meets industry standards.
7.What is the process for return or replacement of 1.5KE150CA-E3/73?
All 1.5KE150CA-E3/73 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE150CA-E3/73, 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 1.5KE150CA-E3/73 part is unused and in its original packaging.
Return procedure for 1.5KE150CA-E3/73:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE150CA-E3/73 Tags
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