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Vishay General Semiconductor - Diodes Division 1.5KE150CAHE3/51
- Part No.:
- 1.5KE150CAHE3/51
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE150CAHE3/51.pdf
- Description:
- TVS DIODE 128VWM 207VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:9,222
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Product details
Overview
1.5KE150CAHE3/51 from Vishay General Semiconductor is a bi-directional Transient Voltage Suppressor (TVS) diode designed for robust overvoltage protection in power and signal lines. It features a 1500 W peak pulse power rating (10/1000 µs), 143 V minimum breakdown voltage (VBR), 128 V maximum stand-off voltage (VWM), 207 V clamping voltage (VC) at 7.2 A peak pulse current, and operates across -55 °C to +175 °C junction temperature - deployed in automotive sensor interfaces and industrial I/O protection.
For engineers reviewing the 1.5KE150CAHE3/51 datasheet, 1.5KE150CAHE3/51 pinout, 1.5KE150CAHE3/51 application, or 1.5KE150CAHE3/51 equivalent, this page delivers verified electrical parameters, AEC-Q101 qualification status, thermal resistance (RθJL = 15.4 °C/W), JEDEC 1.5KE package dimensions, and real-world clamping behavior under transient stress.
Technical Context
This bi-directional TVS diode uses a glass passivated silicon junction to achieve sub-nanosecond response time (<1 ns) and low incremental surge resistance. Its symmetrical clamping characteristic applies equally in both polarities, with no polarity marking on the case - enabling direct placement across AC-coupled or floating signal paths without orientation concerns.
The device is rated for 1500 W peak pulse power per 10/1000 µs waveform at TA = 25 °C, derating linearly above 25 °C per Fig. 2, and supports repetitive surges at ≤0.01% duty cycle. It meets JESD 201 Class 2 whisker resistance (HE3 suffix) and UL 94 V-0 flammability requirements for molded epoxy encapsulation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 143 V / 158 V at 1.0 mA test current - defines reliable conduction onset under transient stress |
| VWM | 128 V maximum - ensures no leakage or false triggering during normal 125 VRMS AC line operation |
| VC @ IPPM | 207 V at 7.2 A - limits downstream component voltage exposure during worst-case surge |
| PPPM | 1500 W (10/1000 µs) - sustains high-energy transients common in automotive load-dump or inductive switching |
| TJ range | -55 °C to +175 °C - supports under-hood automotive and industrial environments without derating loss |
| RθJL | 15.4 °C/W - enables effective heat transfer to PCB copper or heatsink for sustained surge handling |
| AEC-Q101 | Qualified - validated for automotive electronics per stress test requirements including HTGB, HTRB, and TCT |
Pinout & Package
Package: JEDEC Case Style 1.5KE - axial-leaded, molded epoxy body (UL 94 V-0), 0.375" (9.5 mm) lead length, matte tin-plated leads compliant with J-STD-002 and JESD 22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (bi-directional) | Transient conduction path | No polarity marking; symmetric bidirectional clamping - connects across protected line and reference (e.g., VCC/GND or differential pair) |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Enables stable VBR tolerance and long-term reliability under thermal cycling and humidity |
| 1500 W peak pulse power | Handles ISO 7637-2 Pulse 5a (load dump) and IEC 61000-4-5 Combination Wave surges without degradation |
| AEC-Q101 qualification | Validated for automotive use including temperature cycling, high-temperature reverse bias, and accelerated life testing |
| Low clamping ratio (VC/VBR ≈ 1.45) | Minimizes voltage overshoot during clamping - critical for protecting 150 V-rated MOSFETs and gate drivers |
| JESD 201 Class 2 whisker resistance | Prevents tin whisker growth in high-reliability applications where long-term storage or elevated temperature operation occurs |
Applications
| Automotive Power Line Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V/24 V vehicle power rails against load-dump transients (ISO 7637-2 Pulse 5a) and alternator ripple. IC Role / Device Role / Timing Role: Bidirectional shunt clamp placed between battery rail and ground, absorbing energy before it reaches DC-DC converters or microcontrollers. Use Value: Clamps to 207 V within <1 ns, limiting stress on 36 V-input buck regulators and preserving system uptime during engine cranking events. |
Use Scenario: Safeguarding 4–20 mA current-loop transmitters and analog sensor outputs in factory automation PLCs. IC Role / Device Role / Timing Role: Parallel-connected TVS across signal and return lines to suppress ESD (IEC 61000-4-2) and fast transients (IEC 61000-4-4). Use Value: With 128 V stand-off, avoids interference with 24 V loop supply while clamping 4 kV ESD events to safe levels for precision op-amps and ADC front-ends. |
| Telecom Line Surge Protection | Consumer Appliance Motor Control |
Use Scenario: Shielding RS-485/RS-232 data lines in outdoor telecom cabinets exposed to induced lightning surges (IEC 61000-4-5). IC Role / Device Role / Timing Role: Bi-directional TVS installed differential-mode across twisted-pair lines, referenced to local chassis ground. Use Value: 207 V clamping voltage ensures receiver ICs (e.g., MAX1487) remain below absolute maximum ratings during 10/700 µs telecom surges up to 2 kV. |
Use Scenario: Suppressing commutation spikes from brushed DC motors in washing machines and HVAC blowers. IC Role / Device Role / Timing Role: Mounted across motor terminals to clamp inductive kickback before it couples into MCU GPIO or relay driver ICs. Use Value: 1500 W rating absorbs repeated 100–500 mJ spikes without parameter shift - extending lifespan of triac-based motor controllers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ150CA | Lower PPPM (600 W), smaller SMB package (surface-mount), higher VC/VBR ratio (1.53) | Better suited for space-constrained PCBs but unsuitable for automotive load-dump compliance | Select when board area is limited and surge energy is ≤600 W; verify layout thermal relief for SMB footprint |
| 1.5SMC150CA | Same 1500 W rating and VBR, but SMC package (surface-mount, 7.1 mm × 6.2 mm), higher RθJA (50 °C/W) | Requires careful thermal pad design; not AEC-Q101 qualified by default (check specific suffix) | Choose for automated assembly and high-volume production where reflow compatibility outweighs through-hole mechanical robustness |
Compared with 1.5KE150CAHE3/51, SMBJ150CA trades peak power and ruggedness for compactness, while 1.5SMC150CA matches power but shifts thermal management burden to PCB layout - making 1.5KE150CAHE3/51 optimal for high-reliability through-hole deployments requiring proven AEC-Q101 validation and axial lead mechanical stability.
Availability
1.5KE150CAHE3/51 is available at Aetrix Electronics and suitable for automotive electronics, industrial control systems, and telecom infrastructure requiring stable component supply with full traceability and long-lifecycle support.
Supply support for 1.5KE150CAHE3/51 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, power handling, and automotive-grade qualification.
The 1.5KE family was engineered for high-energy transient suppression in harsh environments - targeting automotive, industrial, and telecom applications where failure due to voltage surges must be eliminated.
FAQ
What is the clamping voltage of the 1.5KE150CAHE3/51 under peak pulse conditions?
The 1.5KE150CAHE3/51 exhibits a maximum clamping voltage (VC) of 207 V at its rated 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. 11-Oct-16) and reflects the upper limit of voltage seen by downstream circuitry during surge events - critical for ensuring compatibility with 200 V-rated components.
Is the 1.5KE150CAHE3/51 suitable for automotive applications?
Yes, the 1.5KE150CAHE3/51 is AEC-Q101 qualified (per note 2 on page 3 of the datasheet), confirming its suitability for automotive electronics. The HE3 suffix denotes compliance with JESD 201 Class 2 whisker testing and AEC-Q101 stress requirements, including high-temperature reverse bias and temperature cycling - making it appropriate for engine control units, body electronics, and ADAS sensor modules.
How does the bi-directional configuration of the 1.5KE150CAHE3/51 affect its mounting and usage?
The 1.5KE150CAHE3/51 has no polarity marking and functions identically in both directions, so orientation during PCB assembly is irrelevant. This allows direct placement across AC lines, differential signal pairs, or floating buses without concern for anode/cathode alignment - simplifying layout and reducing assembly errors compared to uni-directional variants like 1.5KE150AHE3/51.
What is the thermal resistance from junction to lead (RθJL) for the 1.5KE150CAHE3/51?
The 1.5KE150CAHE3/51 has a typical thermal resistance from junction to lead (RθJL) of 15.4 °C/W, as specified in the Thermal Characteristics table (page 3). This low value enables efficient heat transfer from the silicon die to the PCB copper or external heatsink via the axial leads - supporting reliable operation during repetitive surge events when mounted with ≥0.375" (9.5 mm) lead length.
Does the 1.5KE150CAHE3/51 meet RoHS and lead-free soldering requirements?
Yes, the 1.5KE150CAHE3/51 carries the HE3 suffix, indicating RoHS compliance and qualification for lead-free soldering processes. It meets J-STD-002 and JESD 22-B102 for solderability, withstands solder dip at 275 °C for up to 10 seconds, and satisfies JESD 201 Class 2 for tin whisker resistance - fully compatible with modern Pb-free reflow and wave soldering profiles.
1.5KE150CAHE3/51 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 1.5KE
1.5KE150CAHE3/51 FAQ
1.How can I place an order for 1.5KE150CAHE3/51 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE150CAHE3/51 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 1.5KE150CAHE3/51 reliable?
The price and inventory of 1.5KE150CAHE3/51 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE150CAHE3/51 is usually 5 days.
3.What payment methods are accepted for 1.5KE150CAHE3/51?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE150CAHE3/51 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE150CAHE3/51?
1.5KE150CAHE3/51 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE150CAHE3/51 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 1.5KE150CAHE3/51?
For technical support, including 1.5KE150CAHE3/51 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE150CAHE3/51 requirements.
6.How does Aetrix verify that 1.5KE150CAHE3/51 is sourced from the original manufacturer or authorized distributors?
All 1.5KE150CAHE3/51 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 1.5KE150CAHE3/51 meets industry standards.
7.What is the process for return or replacement of 1.5KE150CAHE3/51?
All 1.5KE150CAHE3/51 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE150CAHE3/51, 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 1.5KE150CAHE3/51 part is unused and in its original packaging.
Return procedure for 1.5KE150CAHE3/51:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE150CAHE3/51 Tags
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