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Vishay General Semiconductor - Diodes Division 1.5KE150CA-E3/51
- Part No.:
- 1.5KE150CA-E3/51
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE150CA-E3/51.pdf
- Description:
- TVS DIODE 128VWM 207VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:2,109
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Product details
Overview
1.5KE150CA-E3/51 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.
For engineers reviewing the 1.5KE150CA-E3/51 datasheet, 1.5KE150CA-E3/51 pinout, 1.5KE150CA-E3/51 application, or 1.5KE150CA-E3/51 equivalent, this page delivers verified electrical parameters, bidirectional clamping behavior, JEDEC 1.5KE package dimensions, thermal resistance (RθJA = 75 °C/W), and AEC-Q101-qualified alternatives - all critical for automotive, industrial, and telecom surge design validation.
Technical Context
This TVS diode uses a glass-passivated silicon junction optimized for fast transient response (<1 ns) and low incremental surge resistance. Its bidirectional architecture enables symmetrical clamping in AC-coupled or floating signal paths without polarity concerns, and it complies with UL 497B for protector classification (QVGQ2).
The device sustains 1500 W peak pulse power under 10/1000 µs waveform at 0.01% duty cycle, with derating above 25 °C per Fig. 2. Clamping performance is defined by VC = 207 V at IPPM = 7.2 A, and reverse leakage remains ≤1.0 µA at VWM = 128 V - ensuring minimal standby power loss in protected circuits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 143 V / 158 V - defines reliable conduction onset during bidirectional overvoltage events |
| VWM | 128 V - maximum continuous working voltage before leakage exceeds 1.0 µA |
| VC @ IPPM | 207 V at 7.2 A - clamped voltage limiting stress on downstream components during surge |
| PPPM | 1500 W - peak transient energy absorption capability with 10/1000 µs waveform |
| TJ range | –55 °C to +175 °C - supports operation in under-hood automotive and industrial environments |
| RθJA | 75 °C/W - thermal resistance from junction to ambient, critical for PCB layout heat dissipation planning |
| Package | JEDEC 1.5KE - axial-leaded, epoxy-molded case meeting UL 94 V-0 flammability rating |
Pinout & Package
1.5KE150CA-E3/51 uses a 2-terminal axial-leaded package (Case Style 1.5KE) with no polarity marking - consistent with bidirectional functionality. Leads are matte tin-plated and solderable per J-STD-002 and JESD 22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (unmarked) | Bidirectional transient conduction path | Either terminal serves as anode or cathode depending on instantaneous polarity of surge - no orientation required during placement |
| Leads (both) | Thermal and electrical interface | Provide mechanical mounting and conduct surge current; lead length (0.375") impacts RθJL = 15.4 °C/W |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Enables stable VBR tolerance (±5%) and long-term reliability under repeated surge stress |
| 1500 W peak pulse power | Withstands high-energy transients such as ISO 7637-2 Pulse 5a (load dump) and IEC 61000-4-5 Level 4 |
| Sub-nanosecond response time | Clamps within <1 ns - faster than MOVs or gas discharge tubes, preserving sensitive semiconductor integrity |
| UL 497B recognized (QVGQ2) | Validated for telecom and industrial surge protection system compliance without additional certification overhead |
| AEC-Q101 qualified option | 1.5KE150CAHE3_B variant available for automotive applications requiring qualification evidence |
Applications
| Automotive Power Line Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V/24 V vehicle ECUs from load dump and alternator transients. IC Role / Device Role / Timing Role: Bidirectional clamping element placed across power rail and ground, absorbing >100 V spikes before they reach microcontrollers or CAN transceivers. Use Value: Limits rail voltage to ≤207 V during 7.2 A surge, preventing latch-up or gate oxide damage in downstream logic and analog ICs. | Use Scenario: Shielding 4–20 mA or RS-485 sensor nodes from ESD and lightning-induced surges on field wiring. IC Role / Device Role / Timing Role: Primary front-end transient suppressor on differential or single-ended signal lines, operating symmetrically without polarity constraints. Use Value: Maintains signal integrity by clamping bidirectional transients while adding <1 pF capacitance - negligible impact on 1 MHz sensor bandwidth. |
| Telecom Line Card Surge Protection | Consumer Power Adapter Input Stage |
Use Scenario: Secondary protection on DSL or POTS line cards exposed to induced lightning surges per ITU-T K.20/K.21. IC Role / Device Role / Timing Role: Standoff device in series with GDT or MOV, providing precise low-clamp voltage after coarse suppression. Use Value: Delivers 207 V clamping at 7.2 A - lower than typical MOVs - reducing residual stress on line interface transformers and PHY ICs. | Use Scenario: Input-stage overvoltage clamp in AC-DC adapters handling brownouts and line switching spikes. IC Role / Device Role / Timing Role: Fast-acting shunt protector across bulk capacitor input, triggered only during abnormal overvoltage events. Use Value: Withstands 1500 W pulses without degradation, enabling compact designs that meet IEC 62368-1 transient immunity requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ150CA | Surface-mount SMB package; same VBR (143–158 V), lower PPPM = 600 W | Preferred for space-constrained PCBs; unsuitable for >600 W surge events | Select when board area is limited and surge energy is ≤600 W (e.g., secondary-side protection) |
| 1.5KE150A-E3/51 | Unidirectional version; identical VBR, VC, and PPPM, but marked cathode band | Required where DC bias exists and polarity is fixed (e.g., DC power rails with ground reference) | Choose only if circuit topology enforces unidirectional voltage stress - otherwise 1.5KE150CA-E3/51 offers greater flexibility |
Compared with SMBJ150CA, 1.5KE150CA-E3/51 provides 2.5× higher surge power handling and axial-leaded mechanical robustness for through-hole mounting; compared with 1.5KE150A-E3/51, it eliminates polarity-dependent layout constraints and simplifies BOM management in AC-coupled or floating systems.
Availability
1.5KE150CA-E3/51 is available at Aetrix Electronics and suitable for automotive power distribution, industrial sensor interface, and telecom line card applications requiring stable component supply and long-lifecycle support.
Supply support for 1.5KE150CA-E3/51 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 and application-specific performance.
The 1.5KE family was engineered for high-energy transient suppression in harsh environments - targeting automotive, industrial, and infrastructure applications where failure modes must be mitigated without compromising response speed or thermal stability.
FAQ
What is the clamping voltage of the 1.5KE150CA-E3/51 under maximum rated surge current?
The 1.5KE150CA-E3/51 clamps to 207 V at its peak pulse current (IPPM) of 7.2 A, measured using the standard 10/1000 µs waveform. This value is guaranteed per the Vishay datasheet (Document Number: 88301, Rev. 09-Aug-2022) and defines the upper voltage limit imposed on protected circuitry during worst-case transient events. Engineers use this parameter to verify margin between VC and the absolute maximum ratings of downstream ICs.
Is the 1.5KE150CA-E3/51 RoHS compliant and lead-free?
Yes, the 1.5KE150CA-E3/51 carries the "E3" suffix, indicating full RoHS compliance per Directive 2011/65/EU and exemption 7a. Its matte tin-plated leads meet J-STD-002 and JESD 22-B102 solderability standards, and it passes JESD 201 Class 1A whisker testing. The epoxy molding compound is halogen-free and conforms to Vishay's material categorization standard (www.vishay.com/doc?99912).
Can the 1.5KE150CA-E3/51 be used in automotive applications?
The base 1.5KE150CA-E3/51 is commercial-grade, but the AEC-Q101-qualified variant 1.5KE150CAHE3_B is available for automotive use. While the E3/51 part shares identical electrical specs and thermal performance, only the HE3_B version has undergone stress testing per AEC-Q101 - including HTSL, TC, and UHAST - and is documented for under-hood deployment. For production automotive designs, specify the HE3_B suffix.
How does the bidirectional nature of the 1.5KE150CA-E3/51 affect PCB layout?
The 1.5KE150CA-E3/51 has no polarity marking and functions identically regardless of orientation, simplifying PCB layout and eliminating risk of reverse installation. This is especially valuable in AC-coupled signal paths, transformer-isolated interfaces, or floating grounds where voltage polarity reverses dynamically. Layout requires only low-inductance connections to minimize V = L·di/dt overshoot during clamping - no orientation-dependent routing rules apply for the 1.5KE150CA-E3/51.
What is the maximum operating temperature for the 1.5KE150CA-E3/51 junction?
The 1.5KE150CA-E3/51 has a maximum junction temperature (TJ) rating of +175 °C, with a storage temperature range of –55 °C to +175 °C. This allows reliable operation in under-hood automotive, industrial motor drives, and outdoor telecom enclosures. Derating begins above 25 °C ambient per Figure 2 in the datasheet, and thermal design must account for RθJA = 75 °C/W and RθJL = 15.4 °C/W to ensure TJ stays within limits during repetitive surge events.
1.5KE150CA-E3/51 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-201AA, DO-27, Axial
- Series:
- TransZorb®
- Packaging:
- Bulk
- Product Status:
- Obsolete
- 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-E3/51 FAQ
1.How can I place an order for 1.5KE150CA-E3/51 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE150CA-E3/51 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-E3/51 reliable?
The price and inventory of 1.5KE150CA-E3/51 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-E3/51 is usually 5 days.
3.What payment methods are accepted for 1.5KE150CA-E3/51?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE150CA-E3/51 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE150CA-E3/51?
1.5KE150CA-E3/51 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE150CA-E3/51 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-E3/51?
For technical support, including 1.5KE150CA-E3/51 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE150CA-E3/51 requirements.
6.How does Aetrix verify that 1.5KE150CA-E3/51 is sourced from the original manufacturer or authorized distributors?
All 1.5KE150CA-E3/51 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-E3/51 meets industry standards.
7.What is the process for return or replacement of 1.5KE150CA-E3/51?
All 1.5KE150CA-E3/51 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE150CA-E3/51, 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-E3/51 part is unused and in its original packaging.
Return procedure for 1.5KE150CA-E3/51:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE150CA-E3/51 Tags
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