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Vishay General Semiconductor - Diodes Division 1.5KE150CA-E3/54
- Part No.:
- 1.5KE150CA-E3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE150CA-E3/54.pdf
- Description:
- TVS DIODE 128VWM 207VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:1,097
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Product details
Overview
1.5KE150CA-E3/54 from Vishay General Semiconductor is a bidirectional Transient Voltage Suppressor (TVS) diode designed for high-energy surge 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 standoff voltage (VWM), clamping voltage of 207 V at 7.2 A peak pulse current, and operates across -55 °C to +175 °C junction temperature range - deployed in automotive sensor interfaces and industrial I/O protection.
For engineers reviewing the 1.5KE150CA-E3/54 datasheet, 1.5KE150CA-E3/54 pinout, 1.5KE150CA-E3/54 application, or 1.5KE150CA-E3/54 equivalent, this page delivers verified electrical parameters, bidirectional clamping behavior, JEDEC 1.5KE package dimensions, thermal resistance (RθJA = 75 °C/W), and direct alternatives with documented VWM/VC trade-offs for ESD and lightning transient suppression design.
Technical Context
This device implements a glass-passivated silicon PN junction optimized for fast-response transient suppression. Its bidirectional architecture enables symmetrical clamping in both polarities without external polarity marking, supporting AC-coupled lines and differential bus protection. The 10/1000 µs waveform compliance ensures robustness against lightning-induced surges per IEC 61000-4-5 Level 4.
Thermal design relies on low RθJL (15.4 °C/W) to sustain repetitive 1500 W pulses at ≤0.01% duty cycle. The 207 V clamping voltage at 7.2 A IPPM provides defined overvoltage limiting for downstream MOSFETs and microcontrollers, while the 0.106 %/°C VBR temperature coefficient ensures stable threshold behavior across automotive temperature ranges.
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 under transient stress |
| VWM | 128 V maximum - safe continuous operating voltage before leakage exceeds 1 µA, enabling use on 110 V AC lines |
| VC @ IPPM | 207 V at 7.2 A - limits peak voltage seen by protected IC during 10/1000 µs surge, preserving 20+ V margin for 180 V-rated components |
| PPPM | 1500 W - supports single-event lightning surge immunity up to IEC 61000-4-5 4 kV/2 Ω test level |
| TJ Range | -55 °C to +175 °C - qualified for under-hood automotive and industrial motor drive environments |
| RθJA | 75 °C/W - determines required PCB copper area for thermal management when operating near PD = 6.5 W limit |
Pinout & Package
Package: JEDEC DO-201AD (Case Style 1.5KE), molded epoxy body with matte tin-plated leads; RoHS-compliant, commercial grade (E3 suffix); 0.375" lead length, 1.0" overall length.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (bidirectional) | Surge current path | No polarity marking - symmetrical conduction allows placement on AC or differential lines without orientation check |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Enables stable VBR tolerance (±5%) and long-term reliability under humidity and thermal cycling |
| 1500 W peak pulse power | Withstands 4 kV/2 Ω IEC 61000-4-5 surges without degradation when mounted on ≥1 sq-in 2-oz copper |
| Sub-nanosecond response time | Clamps transients within 1 ns - faster than MOVs or polymer-based protectors, preserving signal integrity on high-speed buses |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients (e.g., ESD >15 kV), critical for protecting 3.3 V logic inputs |
| UL 94 V-0 molding compound | Prevents flame propagation in fault conditions, meeting safety requirements for industrial control cabinets and EV charging systems |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Modules |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor front-ends (e.g., pressure, temperature) from load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Bidirectional clamping element placed between signal line and ground, absorbing energy before it reaches the transceiver's ESD diodes. Use Value: Maintains 128 V VWM compatibility with 12 V automotive supply while clamping to 207 V - preventing latch-up in 3.3 V/5 V interface ICs during 100 V/50 ms load dump events. | Use Scenario: Shielding digital input channels on programmable logic controllers from induced surges on factory floor wiring. IC Role / Device Role / Timing Role: Primary overvoltage clamp on 24 V DC input terminals, coordinated with upstream fuses and filtering capacitors. Use Value: 1500 W PPPM handles repetitive switching transients from solenoid valves and contactors, reducing field failure rates by >90% versus Zener-only solutions. |
| Telecom Line Interface | AC Power Supply Input Stage |
Use Scenario: Surge protection on Ethernet PHY magnetics secondary side and RS-485 data lines in outdoor base stations. IC Role / Device Role / Timing Role: Secondary-level TVS placed after common-mode chokes to suppress differential-mode transients coupled onto twisted-pair cables. Use Value: Symmetrical bidirectional clamping eliminates need for dual unidirectional devices, simplifying layout and cutting BOM cost by 30% in space-constrained telecom modules. | Use Scenario: Input-stage transient suppression on offline AC-DC power supplies for consumer appliances and lighting drivers. IC Role / Device Role / Timing Role: First-line defense against lightning surges entering via mains input, placed before bridge rectifier and bulk capacitor. Use Value: 207 V VC ensures downstream bridge rectifier (rated 400–600 V) remains within safe SOA during 6 kV ring wave tests per IEC 61000-4-5. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Littelfuse SMAJ150CA | Same 150 V VWM, but lower PPPM = 400 W; DO-214AC package (smaller footprint, higher RθJA) | Suitable for space-constrained consumer electronics; insufficient for industrial 4 kV surge testing | Select when board area is limited and surge threat level is <2 kV; verify thermal derating at 75 °C ambient |
| ON Semiconductor 1.5SMC150CA | Identical VWM/VC specs, same 1500 W rating, but SMC (DO-214AB) package - 20% larger footprint, lower RθJA = 60 °C/W | Better thermal performance for high-reliability power supplies; requires larger PCB pad layout | Choose for high-volume industrial designs needing extended thermal margin and legacy SMC footprint compatibility |
Compared with 1.5KE150CA-E3/54, SMAJ150CA trades surge robustness for compactness, while 1.5SMC150CA offers superior thermal dissipation at the cost of board space - making the 1.5KE150CA-E3/54 optimal for cost-sensitive, medium-duty automotive and industrial applications requiring proven DO-201AD mechanical ruggedness.
Availability
1.5KE150CA-E3/54 is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O protection, telecom line conditioning, and AC power supply input stages requiring stable component supply and full traceability.
Supply support for 1.5KE150CA-E3/54 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 AEC-Q101 qualification.
The 1.5KE series was engineered specifically for high-energy transient suppression in harsh environments - targeting automotive, industrial, and telecom applications where failure due to voltage surges must be eliminated through robust, standardized, and thermally stable packaging.
FAQ
What is the clamping voltage of the 1.5KE150CA-E3/54 under a standard 10/1000 µs surge?
The 1.5KE150CA-E3/54 has a maximum clamping voltage (VC) of 207 V at 7.2 A peak pulse current (IPPM) under the 10/1000 µs waveform. This value is measured per JEDEC standards and represents the upper bound voltage imposed on protected circuitry during worst-case surge events - critical for ensuring downstream components like 200 V-rated MOSFETs remain within safe operating area. The 1.5KE150CA-E3/54 achieves this with minimal overshoot due to its low incremental surge resistance.
Is the 1.5KE150CA-E3/54 suitable for automotive applications?
Yes, the 1.5KE150CA-E3/54 is widely used in automotive applications including sensor interface protection and infotainment system power rails. While the base E3 suffix denotes commercial grade, its -55 °C to +175 °C operating junction temperature range, glass-passivated junction, and UL 94 V-0 molding meet core environmental requirements for under-hood and cabin modules. For AEC-Q101 qualification, the HE3 variant (e.g., 1.5KE150CAHE3_B) is required - the 1.5KE150CA-E3/54 itself is not AEC-Q101 certified but shares identical electrical characteristics and mechanical construction.
How does the bidirectional nature of the 1.5KE150CA-E3/54 affect its placement on a PCB?
The 1.5KE150CA-E3/54 has no polarity marking and conducts identically in both directions, allowing placement across any two nodes requiring symmetrical overvoltage protection - such as differential signal pairs (RS-485, CAN), AC power lines, or transformer-coupled interfaces. Unlike unidirectional TVS diodes, no orientation check is needed during assembly, eliminating misplacement risk and reducing inspection time. Its DO-201AD package also supports manual or automated insertion without rotational alignment constraints - a key advantage in high-mix manufacturing of 1.5KE150CA-E3/54-based designs.
What is the thermal resistance of the 1.5KE150CA-E3/54, and how does it impact layout?
The 1.5KE150CA-E3/54 has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W under standard JEDEC test conditions. This means that at its maximum power dissipation of 6.5 W, the junction temperature will rise ~488 °C above ambient - underscoring the necessity of PCB copper pour (≥1 sq-in 2-oz copper per lead) to achieve practical thermal performance. Layout must include wide, short traces to both leads and avoid thermal isolation; the 1.5KE150CA-E3/54's RθJL of 15.4 °C/W further emphasizes the importance of solder joint quality and lead-to-copper connection integrity.
Can the 1.5KE150CA-E3/54 be used in parallel to increase surge current handling?
While the 1.5KE150CA-E3/54 datasheet notes TVS diodes can be used in parallel to increase peak power ratings, doing so requires careful matching and layout to ensure current sharing. Mismatched VBR (143–158 V range) causes one device to clamp first and absorb disproportionate energy - risking premature failure. If higher IPPM is needed, selecting a single higher-rated device (e.g., 1.5KE170CA) or verifying matched-bin parts with <1% VBR spread is strongly preferred over paralleling standard 1.5KE150CA-E3/54 units in production designs.
1.5KE150CA-E3/54 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-201AA, DO-27, Axial
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- 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-E3/54 FAQ
1.How can I place an order for 1.5KE150CA-E3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE150CA-E3/54 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-E3/54 reliable?
The price and inventory of 1.5KE150CA-E3/54 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-E3/54 is usually 5 days.
3.What payment methods are accepted for 1.5KE150CA-E3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE150CA-E3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE150CA-E3/54?
1.5KE150CA-E3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE150CA-E3/54 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-E3/54?
For technical support, including 1.5KE150CA-E3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE150CA-E3/54 requirements.
6.How does Aetrix verify that 1.5KE150CA-E3/54 is sourced from the original manufacturer or authorized distributors?
All 1.5KE150CA-E3/54 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-E3/54 meets industry standards.
7.What is the process for return or replacement of 1.5KE150CA-E3/54?
All 1.5KE150CA-E3/54 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE150CA-E3/54, 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-E3/54 part is unused and in its original packaging.
Return procedure for 1.5KE150CA-E3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE150CA-E3/54 Tags
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