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Vishay General Semiconductor - Diodes Division 1.5KE150-E3/73
- Part No.:
- 1.5KE150-E3/73
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE150-E3/73.pdf
- Description:
- TVS DIODE 121VWM 215VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:5,192
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Product details
Overview
1.5KE150-E3/73 from Vishay General Semiconductor is a unidirectional Transient Voltage Suppressor (TVS) diode designed for primary overvoltage protection in DC power rails and signal lines. It features a 150 V breakdown voltage (VBR = 143–158 V), 128 V maximum working voltage (VWM), 207 V clamping voltage (VC) at 7.2 A peak pulse current, 1500 W peak pulse power (10/1000 µs), and operates across –55 °C to +175 °C junction temperature range - deployed in automotive power supply inputs and industrial sensor interface protection.
For engineers reviewing the 1.5KE150-E3/73 datasheet, 1.5KE150-E3/73 pinout, 1.5KE150-E3/73 application, or 1.5KE150-E3/73 equivalent, this page delivers verified electrical parameters, JEDEC 1.5KE package dimensions, clamping behavior under surge conditions, thermal derating curves, and direct alternatives with documented VBR, VC, and IPPM differences.
Technical Context
This device uses a glass-passivated silicon junction optimized for fast transient response (<1 ns) and low incremental surge resistance. Its unidirectional polarity enables cathode-referenced clamping on positive-going transients, with a 3.5 V forward voltage (VF) at 100 A - critical for minimizing conduction loss during high-current surges.
The 1.5KE150-E3/73 adheres to JEDEC case style 1.5KE (DO-201AD), supports 200 A non-repetitive forward surge current (IFSM), and exhibits a temperature coefficient of VBR of +0.106 %/°C - enabling predictable voltage shift across operating temperature ranges without external compensation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 143 V / 158 V - defines guaranteed clamping onset window; ensures reliable triggering above 128 V steady-state rail |
| VWM | 128 V - maximum continuous reverse voltage before leakage exceeds 1 μA; sets upper limit for safe DC operating margin |
| VC @ IPPM | 207 V at 7.2 A - peak clamped voltage during 10/1000 µs surge; determines protected circuit's maximum stress level |
| PPPM | 1500 W - peak pulse power handling capacity; validates robustness against lightning-induced or inductive-switching transients |
| IFSM | 200 A - 8.3 ms half-sine surge rating; supports repeated motor drive or relay coil turn-off events without degradation |
| TJ max. | +175 °C - extended junction temperature capability; enables placement near heat sources in engine control units or power converters |
| RθJA | 75 °C/W - thermal resistance from junction to ambient; informs heatsinking requirements for sustained power dissipation |
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" (9.5 mm) lead length standard.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference node | Connected to ground or return path; establishes reference for unidirectional clamping action |
| Cathode | Protected line input | Connected to DC rail or signal line; absorbs positive transients by conducting to anode when VAK > VBR |
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 (10/1000 µs) | Supports IEC 61000-4-5 Level 4 surge immunity (4 kV line-earth) without cascaded protection stages |
| Clamping response time <1 ns | Protects sub-10 ns edge-rate digital interfaces (e.g., CAN FD, RS-485) before IC latch-up occurs |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients (e.g., ESD contact discharge), improving protection margin |
| Operating TJ up to +175 °C | Permits direct mounting on high-temperature PCB zones in automotive under-hood modules |
Applications
| Automotive Power Input Protection | Industrial Sensor Signal Line Clamp |
|---|---|
Use Scenario: 12 V battery-fed ECUs exposed to load dump (ISO 7637-2 Pulse 5a, 35 V/400 ms) and alternator ripple. IC Role / Device Role: Primary overvoltage clamp placed between battery rail and DC-DC converter input. Use Value: Limits transient voltage to ≤207 V, preventing damage to 36 V-rated input MOSFETs and LDOs downstream. | Use Scenario: 4–20 mA current loop sensors in factory automation subject to induced lightning surges on long field wiring. IC Role / Device Role: Unidirectional TVS shunting surge energy to ground at analog front-end input stage. Use Value: Clamps 1 kV/500 A surge (10/1000 µs) to 207 V within 1 ns, preserving ±10 V input amplifier integrity. |
| Telecom DC Power Feeder Protection | Consumer Appliance Motor Drive Snubber |
Use Scenario: -48 V telecom rectifier outputs feeding base station radios, vulnerable to AC line coupling and lightning injection. IC Role / Device Role: Standoff-rated TVS on output bus to suppress common-mode surges before PoE injectors or RF amplifiers. Use Value: Withstands 128 V continuous reverse bias while clamping 1.5 kW surges - maintaining system uptime during grid disturbances. | Use Scenario: Brushed DC motor controllers in home appliances generating 100–300 V inductive kickback during PWM commutation. IC Role / Device Role: Freewheeling TVS across motor terminals to absorb back-EMF spikes. Use Value: Handles 200 A single-pulse surge (8.3 ms) without degradation, eliminating need for RC snubbers and reducing BOM count. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Littelfuse SMAJ150A | VBR = 143–158 V (same), VC = 228 V at 6.6 A, PPPM = 400 W, DO-214AC package | Lower peak power rating limits use to lower-energy transients (IEC 61000-4-4); smaller footprint but higher clamping voltage | Select when board space is constrained and surge threat level is ≤1 kV/500 A; verify thermal margin due to higher RθJA. |
| ON Semiconductor 1.5SMC150A | VBR = 143–158 V (same), VC = 207 V at 7.2 A (identical), PPPM = 1500 W, DO-214AB package | Same electrical performance but different mechanical form factor - requires PCB layout revision for lead spacing and body height | Choose for drop-in replacement only if DO-214AB footprint is already validated; otherwise prefer 1.5KE150-E3/73 for proven DO-201AD reliability in high-vibration environments. |
Compared with SMAJ150A and 1.5SMC150A, the 1.5KE150-E3/73 offers identical clamping performance and surge rating but superior mechanical ruggedness via DO-201AD construction - making it preferred for automotive and industrial applications where vibration, thermal cycling, and long-term solder joint integrity are critical.
Availability
1.5KE150-E3/73 is available at Aetrix Electronics and suitable for automotive power distribution, industrial sensor interface design, telecom DC feeder protection, and consumer appliance motor control requiring stable component supply across multi-year production cycles.
Supply support for 1.5KE150-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 high-reliability, high-power, and automotive-qualified components.
The 1.5KE series was engineered specifically for robust, high-energy transient suppression in harsh environments - targeting automotive, industrial, and telecom infrastructure where failure modes must be mitigated without active circuitry.
FAQ
What is the breakdown voltage tolerance for the 1.5KE150-E3/73?
The 1.5KE150-E3/73 has a specified breakdown voltage range of 143 V to 158 V at 1.0 mA test current, corresponding to a ±5 % tolerance around the nominal 150 V rating. This tight tolerance ensures consistent clamping onset across production lots and simplifies margin analysis in safety-critical designs such as automotive power supplies where overvoltage thresholds must remain predictable over temperature and lifetime.
Does the 1.5KE150-E3/73 meet AEC-Q101 qualification?
No, the 1.5KE150-E3/73 is a commercial-grade part with E3 suffix and does not carry AEC-Q101 qualification. Vishay offers AEC-Q101 qualified versions under the HE3 suffix (e.g., 1.5KE150AHE3_B), which include additional stress testing for automotive use. The 1.5KE150-E3/73 remains suitable for industrial and telecom applications where extended temperature operation (–55 °C to +175 °C) and high surge robustness are required, but formal automotive qualification is not mandated.
What is the maximum clamping voltage of the 1.5KE150-E3/73 under surge conditions?
The maximum clamping voltage (VC) of the 1.5KE150-E3/73 is 207 V, measured at its rated peak pulse current (IPPM) of 7.2 A using a 10/1000 µs waveform. This value represents the highest voltage the device allows across its terminals during a standardized surge event and directly determines the peak stress imposed on downstream components - making it essential for verifying that protected ICs remain within their absolute maximum ratings.
Can the 1.5KE150-E3/73 be used in bidirectional configurations?
No, the 1.5KE150-E3/73 is a unidirectional TVS diode, identifiable by its cathode band marking and specified VF = 3.5 V at 100 A. Bidirectional variants require the "CA" suffix (e.g., 1.5KE150CA), which lack polarity markings and exhibit symmetrical clamping in both directions. Using the 1.5KE150-E3/73 in AC or differential signal paths would result in unintended forward conduction during negative half-cycles, potentially causing malfunction or damage.
What is the thermal resistance from junction to ambient for the 1.5KE150-E3/73?
The typical thermal resistance from junction to ambient (RθJA) for the 1.5KE150-E3/73 is 75 °C/W under standard test conditions (JEDEC JESD51-2, no heatsink). This value assumes minimal copper area and natural convection cooling; actual RθJA improves significantly with PCB copper pour or heatsinking. Engineers must apply this parameter when calculating junction temperature rise during repetitive surge events or sustained power dissipation to ensure operation stays below the +175 °C maximum rating.
1.5KE150-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:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 121V
- Voltage - Breakdown (Min):
- 136V
- Voltage - Clamping (Max) @ Ipp:
- 215V
- Current - Peak Pulse (10/1000µs):
- 7A
- 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
1.5KE150-E3/73 FAQ
1.How can I place an order for 1.5KE150-E3/73 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE150-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 1.5KE150-E3/73 reliable?
The price and inventory of 1.5KE150-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 1.5KE150-E3/73 is usually 5 days.
3.What payment methods are accepted for 1.5KE150-E3/73?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE150-E3/73 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE150-E3/73?
1.5KE150-E3/73 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE150-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 1.5KE150-E3/73?
For technical support, including 1.5KE150-E3/73 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE150-E3/73 requirements.
6.How does Aetrix verify that 1.5KE150-E3/73 is sourced from the original manufacturer or authorized distributors?
All 1.5KE150-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 1.5KE150-E3/73 meets industry standards.
7.What is the process for return or replacement of 1.5KE150-E3/73?
All 1.5KE150-E3/73 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE150-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 1.5KE150-E3/73 part is unused and in its original packaging.
Return procedure for 1.5KE150-E3/73:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE150-E3/73 Tags
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