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Vishay General Semiconductor - Diodes Division 1.5KE540-E3/73
- Part No.:
- 1.5KE540-E3/73
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE540-E3/73.pdf
- Description:
- TVS DIODE 437VWM 772VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:8,104
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Product details
Overview
1.5KE540-E3/73 from Vishay General Semiconductor is a unidirectional Transient Voltage Suppressor (TVS) diode designed for high-energy surge protection in power rails and signal lines. It features a 513 V to 567 V breakdown voltage (VBR), 459 V maximum working voltage (VWM), 740 V clamping voltage (VC) at 2.03 A peak pulse current, 1500 W peak pulse power rating (10/1000 µs), and operates across -55 °C to +175 °C junction temperature range - used to safeguard MOSFETs, IGBTs, and industrial control inputs against lightning-induced transients.
For engineers reviewing the 1.5KE540-E3/73 datasheet, 1.5KE540-E3/73 pinout, 1.5KE540-E3/73 application, or 1.5KE540-E3/73 equivalent, this page delivers verified electrical parameters, package dimensions, clamping behavior under surge conditions, thermal derating curves, and direct alternative options for overvoltage protection design validation.
Technical Context
This TVS diode employs a glass-passivated silicon junction optimized for fast response (<1 ns) and low incremental surge resistance. Its unidirectional polarity uses a cathode band marking and exhibits 3.5–5.0 V forward voltage at 100 A depending on VBR tier - with 1.5KE540-E3/73 falling in the ≥250 V group (VF = 5.0 V).
It complies with JEDEC standards for transient suppression, supports 200 A non-repetitive forward surge current (8.3 ms half-sine), and is rated for 6.5 W steady-state power dissipation on infinite heatsink at TL = 75 °C. Thermal resistance is 15.4 °C/W junction-to-lead and 75 °C/W junction-to-ambient.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 513 V / 567 V - defines minimum voltage at which device enters avalanche conduction; ensures reliable triggering above system operating voltage |
| VWM | 459 V - maximum continuous reverse standoff voltage; must exceed normal circuit operating voltage to prevent leakage or false triggering |
| VC @ IPPM | 740 V - clamping voltage during 2.03 A 10/1000 µs surge; determines maximum stress imposed on protected downstream components |
| PPPM | 1500 W - peak pulse power handling capability; enables robust protection against lightning surges per IEC 61000-4-5 Level 4 |
| IPPM | 2.03 A - peak pulse current corresponding to VC; used with VC to calculate worst-case energy dissipation in protected circuit |
| TJ max. | +175 °C - maximum junction temperature; allows operation in high-temperature industrial environments without thermal shutdown |
| RθJL | 15.4 °C/W - junction-to-lead thermal resistance; critical for estimating temperature rise under repetitive surge conditions |
Pinout & Package
Package: DO-201AD (Case Style 1.5KE), axial-leaded molded epoxy body meeting UL 94 V-0 flammability rating; matte tin-plated leads compliant with J-STD-002 and JESD 22-B102 solderability standards.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to lower-potential side of protected line; reverse-biased during normal operation |
| Cathode (banded end) | Avalanche conduction terminal | Connected to higher-potential side; conducts during overvoltage events to clamp voltage to VC |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Enables stable, repeatable avalanche characteristics and long-term reliability under repeated surge stress |
| 1500 W peak pulse power (10/1000 µs) | Supports IEC 61000-4-5 Level 4 surge immunity testing without degradation |
| Clamping time < 1 ns | Responds faster than MOVs or gas discharge tubes, protecting sensitive ICs before damage occurs |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients, improving protection margin |
| RoHS-compliant E3 suffix | Meets JESD 201 Class 1A whisker test requirements for high-reliability commercial applications |
Applications
| Industrial Motor Drives | Telecom Power Supplies |
|---|---|
Use Scenario: Protection of DC bus inputs in variable-frequency drives exposed to regenerative braking spikes and utility grid transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed across input terminals to clamp positive-going surges exceeding 459 V. Use Value: Limits transient voltage to ≤740 V, preventing gate oxide rupture in IGBT modules rated for 600 V blocking. | Use Scenario: Input-stage surge suppression in AC/DC front-end converters for base station power systems. IC Role / Device Role / Timing Role: Primary overvoltage clamp on rectified AC line, coordinated with upstream fuse and MOV. Use Value: Absorbs 1500 W surge energy without thermal runaway, maintaining system uptime during lightning-induced line surges. |
| Automotive Battery Monitoring | Renewable Energy Inverters |
Use Scenario: Protection of high-side current sense amplifier inputs connected to 48 V battery rails. IC Role / Device Role / Timing Role: Low-capacitance unidirectional TVS shunting transients induced by load dump or relay bounce. Use Value: Clamps 100 V/ms transients within 1 ns, preserving measurement accuracy of ±0.5% current sensors. | Use Scenario: DC-link overvoltage protection in solar string inverters subjected to rapid irradiance changes and grid faults. IC Role / Device Role / Timing Role: Standoff-rated TVS across PV array input to suppress switching transients from MPPT controllers. Use Value: Withstands 200 A surge current (8.3 ms) without parametric shift, ensuring long-term field reliability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ540A | Lower PPPM (600 W), smaller SMB package (vs. DO-201AD), same VBR range (513–567 V) | Not suitable for 1500 W surge events; limited to PCB space-constrained designs with lower energy threats | Select only when board area is constrained and surge threat level is ≤600 W (IEC 61000-4-5 Level 2) |
| 1.5KE540AHE3_B | Identical electrical specs; AEC-Q101 qualified, HE3 whisker-tested, B revision code | Required for automotive-grade production; not approved for commercial-only use cases | Choose for automotive applications requiring qualification; otherwise 1.5KE540-E3/73 remains optimal for industrial/commercial use |
Compared with SMBJ540A, 1.5KE540-E3/73 delivers 2.5× higher surge power handling and proven thermal stability in leaded through-hole mounting; versus 1.5KE540AHE3_B, it lacks AEC-Q101 qualification but offers identical protection performance at lower cost for non-automotive deployments.
Availability
1.5KE540-E3/73 is available at Aetrix Electronics and suitable for industrial motor drives, telecom power supplies, renewable energy inverters, and automotive battery monitoring systems requiring stable component supply and long-term lifecycle support.
Supply support for 1.5KE540-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, MOSFETs, and protection devices with emphasis on reliability, efficiency, and application-specific optimization.
The 1.5KE series was engineered for high-energy transient suppression in harsh environments, targeting industrial, telecom, and transportation systems where failure due to voltage surges must be eliminated.
FAQ
What is the clamping voltage of the 1.5KE540-E3/73 under a 10/1000 µs surge?
The 1.5KE540-E3/73 has a maximum clamping voltage (VC) of 740 V at its rated peak pulse current of 2.03 A using the standard 10/1000 µs waveform. This value is measured per JEDEC test conditions and defines the upper voltage limit imposed on protected circuitry during surge events - critical for verifying compatibility with downstream component voltage ratings.
Is the 1.5KE540-E3/73 unidirectional or bidirectional?
The 1.5KE540-E3/73 is a unidirectional Transient Voltage Suppressor. Its part number lacks the "CA" suffix (e.g., 1.5KE220CA), confirming unidirectional polarity. The cathode is marked with a color band, and it conducts only during reverse-biased overvoltage conditions - making it suitable for DC rail protection where polarity is fixed.
What is the maximum operating temperature for the 1.5KE540-E3/73?
The 1.5KE540-E3/73 has a maximum junction temperature (TJ) of +175 °C and an operating junction/storage temperature range of -55 °C to +175 °C. This wide range supports deployment in high-temperature industrial enclosures, under-hood automotive locations, and outdoor renewable energy installations without derating concerns up to rated power.
Does the 1.5KE540-E3/73 meet RoHS requirements?
Yes, the 1.5KE540-E3/73 carries the "E3" suffix, indicating full RoHS compliance per EU Directive 2011/65/EU. It also meets JESD 201 Class 1A whisker test requirements and uses matte tin-plated leads solderable per J-STD-002 and JESD 22-B102 - suitable for lead-free reflow and wave soldering processes.
What package type does the 1.5KE540-E3/73 use?
The 1.5KE540-E3/73 uses the DO-201AD package (Case Style 1.5KE), an axial-leaded, molded epoxy body with UL 94 V-0 flammability rating. Dimensions are 1.0 inch (25.4 mm) length minimum, 0.375 inch (9.5 mm) lead length, and 0.042 inch (1.07 mm) lead diameter - designed for through-hole mounting and high-power dissipation in industrial PCBs.
1.5KE540-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):
- 437V
- Voltage - Breakdown (Min):
- 486V
- Voltage - Clamping (Max) @ Ipp:
- 772V
- Current - Peak Pulse (10/1000µs):
- 1.94A
- 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
1.5KE540-E3/73 FAQ
1.How can I place an order for 1.5KE540-E3/73 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE540-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 1.5KE540-E3/73 reliable?
The price and inventory of 1.5KE540-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 1.5KE540-E3/73 is usually 5 days.
3.What payment methods are accepted for 1.5KE540-E3/73?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE540-E3/73 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE540-E3/73?
1.5KE540-E3/73 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE540-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 1.5KE540-E3/73?
For technical support, including 1.5KE540-E3/73 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE540-E3/73 requirements.
6.How does Aetrix verify that 1.5KE540-E3/73 is sourced from the original manufacturer or authorized distributors?
All 1.5KE540-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 1.5KE540-E3/73 meets industry standards.
7.What is the process for return or replacement of 1.5KE540-E3/73?
All 1.5KE540-E3/73 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE540-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 1.5KE540-E3/73 part is unused and in its original packaging.
Return procedure for 1.5KE540-E3/73:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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