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Vishay General Semiconductor - Diodes Division 1.5KE150A-E3/51
- Part No.:
- 1.5KE150A-E3/51
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE150A-E3/51.pdf
- Description:
- TVS DIODE 128VWM 207VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:3,087
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Product details
Overview
1.5KE150A-E3/51 from Vishay General Semiconductor is a unidirectional Transient Voltage Suppressor (TVS) diode designed for robust overvoltage protection in DC power rails and signal lines. It features a 1500 W peak pulse power rating (10/1000 µs), 143–158 V breakdown voltage (VBR), 128 V maximum working voltage (VWM), 207 V clamping voltage at peak current, and operates across –55 °C to +175 °C junction temperature range - deployed in automotive power supply inputs and industrial sensor interface circuits.
For engineers reviewing the 1.5KE150A-E3/51 datasheet, 1.5KE150A-E3/51 pinout, 1.5KE150A-E3/51 application, or 1.5KE150A-E3/51 equivalent, this page delivers verified electrical parameters, thermal derating behavior, clamping performance under surge conditions, RoHS-compliant packaging details, and direct alternative part comparisons for ESD and lightning transient protection design validation.
Technical Context
This unidirectional TVS diode uses a glass-passivated silicon junction optimized for fast response (<1 ns) and low incremental surge resistance. Its clamping action activates within nanoseconds of transient onset, limiting voltage excursions to ≤207 V at 7.2 A peak pulse current (IPPM) under standardized 10/1000 µs waveform stress.
The device complies with JEDEC standards for transient suppression and supports AEC-Q101 qualification in HE3 variants (not applicable to -E3/51). It exhibits a temperature coefficient of VBR of 0.106 %/°C and maintains stable leakage (<1 µA at VWM) up to 128 V standoff voltage, enabling reliable operation in high-impedance sensing paths.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 143 V / 158 V at 1 mA test current - defines precise voltage threshold where clamping initiates |
| VWM | 128 V maximum - ensures no conduction during normal 125 V DC rail operation |
| VC @ IPPM | 207 V at 7.2 A - limits downstream component stress during 1500 W transient events |
| PPPM | 1500 W (10/1000 µs waveform) - sustains single-pulse surges typical of ISO 7637-2 Load Dump or IEC 61000-4-5 |
| IFSM | 200 A (8.3 ms half-sine) - withstands repetitive motor-switching surge currents without degradation |
| TJ range | –55 °C to +175 °C - supports under-hood automotive and industrial ambient environments |
| RθJA | 75 °C/W - informs heatsink requirements when operating near 6.5 W steady-state dissipation limit |
Pinout & Package
Package: DO-201AD (Case Style 1.5KE), axial-leaded, molded epoxy body meeting UL 94 V-0; matte tin-plated leads compliant with J-STD-002 and JESD 22-B102 solderability standards.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference terminal | Connected to ground or return path; reverse-biased during transient clamp |
| Cathode | High-side input terminal | Connected to protected line; color band identifies cathode end per polarity marking convention |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Enables stable VBR tolerance and long-term reliability under thermal cycling |
| 1500 W peak pulse power | Handles IEC 61000-4-5 Level 4 surges (4 kV line-to-ground) without failure |
| <1 ns response time | Clamps before sensitive ICs experience damaging overvoltage - critical for MCU I/O protection |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (e.g., EFT bursts) |
| RoHS-compliant E3 suffix | Meets JESD 201 Class 1A whisker resistance - suitable for lead-free reflow assembly |
Applications
| Automotive Power Input Protection | Industrial Sensor Signal Line Protection |
|---|---|
Use Scenario: 12 V/24 V battery-fed ECUs exposed to load dump transients per ISO 7637-2 Pulse 5a. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power rail and ground to clamp positive-going surges above 128 V. Use Value: Limits voltage to ≤207 V during 1500 W pulses, preventing damage to LDOs, CAN transceivers, and microcontrollers. |
Use Scenario: 4–20 mA current loop or analog voltage output (0–10 V) from pressure/temperature sensors in factory automation. IC Role / Device Role / Timing Role: TVS connected across sensor output and system ground to suppress ESD and inductive switching noise. Use Value: Sub-1 ns response prevents latch-up in op-amp front-ends; <1 µA leakage preserves signal accuracy at 128 V standoff. |
| Telecom DC Power Feeds | Consumer Appliance Motor Drive Inputs |
Use Scenario: Central office or remote terminal power supplies feeding DSLAMs or optical line terminals. IC Role / Device Role / Timing Role: Primary overvoltage clamp on –48 V DC distribution bus against lightning-induced surges. Use Value: Withstands 7.2 A peak current at 207 V clamp, meeting Telcordia GR-1089-CORE Level 3 surge immunity. |
Use Scenario: AC/DC converter outputs powering BLDC motor controllers in washing machines or HVAC systems. IC Role / Device Role / Timing Role: TVS installed across DC link capacitor to absorb commutation spikes from IGBT/MOSFET switching. Use Value: 200 A non-repetitive surge rating handles repeated motor startup currents without parametric shift. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ150A | DO-214AA package (smaller footprint); 1500 W rating; VBR = 167–185 V; VC = 243 V @ 6.2 A | Higher clamping voltage reduces margin for 150 V-rated components; better suited for PCB space-constrained designs | Select SMBJ150A only if board layout requires surface-mount and system can tolerate 243 V clamping |
| 1.5KE150CA | Bidirectional variant; same VBR/VC specs but symmetrical clamping for AC-coupled or floating lines | Required for differential signal lines (e.g., RS-485) or transformer-isolated interfaces where polarity reversal occurs | Choose 1.5KE150CA only when protecting bidirectional or AC signals - not a drop-in replacement for unidirectional use |
Compared with 1.5KE150A-E3/51, SMBJ150A trades higher clamping voltage for SMT compatibility, while 1.5KE150CA adds bidirectional symmetry at the cost of unnecessary complexity in DC rail protection - making the original axial 1.5KE150A-E3/51 optimal for cost-sensitive, high-power unidirectional clamping where leaded mounting is acceptable.
Availability
1.5KE150A-E3/51 is available at Aetrix Electronics and suitable for automotive ECU power inputs, industrial sensor interfaces, telecom DC feeds, and consumer appliance motor drive circuits requiring stable component supply and long-lifecycle support.
Supply support for 1.5KE150A-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, MOSFETs, and protection devices with emphasis on reliability, power handling, and automotive-grade qualification.
The 1.5KE series was engineered for high-energy transient suppression in harsh environments - targeting automotive, industrial, and telecom infrastructure where robustness against lightning, load dump, and ESD is mission-critical.
FAQ
What is the clamping voltage of the 1.5KE150A-E3/51 under full 1500 W surge conditions?
The 1.5KE150A-E3/51 clamps to a maximum of 207 V at its rated peak pulse current of 7.2 A, measured using the standard 10/1000 µs waveform. This value is guaranteed per Vishay's Electrical Characteristics table and reflects worst-case voltage seen by downstream circuitry during transient events - critical for validating voltage margins of protected ICs like CAN transceivers or voltage regulators.
Is the 1.5KE150A-E3/51 RoHS compliant and lead-free assembly compatible?
Yes, the 1.5KE150A-E3/51 carries the E3 suffix, indicating full RoHS compliance and qualification to JESD 201 Class 1A whisker resistance. Its matte tin-plated leads meet J-STD-002 and JESD 22-B102 solderability standards, supporting both wave and lead-free reflow processes up to 260 °C peak temperature without degradation.
Can the 1.5KE150A-E3/51 be used in bidirectional signal protection applications?
No - the 1.5KE150A-E3/51 is strictly unidirectional, with cathode marked by a color band. For bidirectional protection (e.g., RS-485, USB D+/D–), the 1.5KE150CA variant must be used instead. Using the unidirectional 1.5KE150A-E3/51 on AC or floating lines risks forward conduction and failure during negative transients.
What is the maximum operating junction temperature for the 1.5KE150A-E3/51?
The 1.5KE150A-E3/51 has a maximum junction temperature (TJ) of +175 °C, validated per JEDEC testing. This allows deployment in under-hood automotive locations or enclosed industrial enclosures where ambient temperatures exceed 125 °C - provided thermal resistance (RθJA = 75 °C/W) and power dissipation limits are respected in layout design.
How does the 1.5KE150A-E3/51 compare to the 1.5KE150AHE3_B variant?
The 1.5KE150A-E3/51 is commercial-grade, while 1.5KE150AHE3_B is AEC-Q101 qualified for automotive applications. Both share identical electrical specs (VBR, VC, PPPM), but the HE3_B variant undergoes additional stress testing (HTOL, TC, UHAST) and is traceable to automotive lot controls - essential for Tier 1 suppliers but unnecessary for industrial or consumer use cases.
1.5KE150A-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:
- 1
- Bidirectional Channels:
- -
- 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
1.5KE150A-E3/51 FAQ
1.How can I place an order for 1.5KE150A-E3/51 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE150A-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 1.5KE150A-E3/51 reliable?
The price and inventory of 1.5KE150A-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 1.5KE150A-E3/51 is usually 5 days.
3.What payment methods are accepted for 1.5KE150A-E3/51?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE150A-E3/51 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE150A-E3/51?
1.5KE150A-E3/51 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE150A-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 1.5KE150A-E3/51?
For technical support, including 1.5KE150A-E3/51 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE150A-E3/51 requirements.
6.How does Aetrix verify that 1.5KE150A-E3/51 is sourced from the original manufacturer or authorized distributors?
All 1.5KE150A-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 1.5KE150A-E3/51 meets industry standards.
7.What is the process for return or replacement of 1.5KE150A-E3/51?
All 1.5KE150A-E3/51 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE150A-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 1.5KE150A-E3/51 part is unused and in its original packaging.
Return procedure for 1.5KE150A-E3/51:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE150A-E3/51 Tags
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