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Vishay General Semiconductor - Diodes Division 1.5KE250-E3/73
- Part No.:
- 1.5KE250-E3/73
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE250-E3/73.pdf
- Description:
- TVS DIODE 202VWM 360VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:5,599
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Product details
Overview
1.5KE250-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 237 V to 263 V breakdown voltage (VBR) at 1 mA, 214 V maximum standoff voltage (VWM), 344 V clamping voltage (VC) at 4.4 A peak pulse current, 1500 W peak pulse power (10/1000 µs), and operates across –55 °C to +175 °C junction temperature. It is used to protect MOSFETs, ICs, and sensor interfaces against lightning-induced surges and inductive switching transients.
For engineers reviewing the 1.5KE250-E3/73 datasheet, 1.5KE250-E3/73 pinout, 1.5KE250-E3/73 application, or 1.5KE250-E3/73 equivalent, this part delivers verified 1500 W surge capability, low clamping ratio (VC/VBR ≈ 1.37), RoHS-compliant matte tin-plated leads, JEDEC-standard 1.5KE package, and UL 94 V-0 molded epoxy construction - critical for industrial power supply and automotive ECU front-end protection design.
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 behavior is defined by a well-characterized VC–IPPM curve under 10/1000 µs waveform, with thermal resistance RθJL = 15.4 °C/W enabling robust transient energy dissipation into PCB copper or leads.
The device complies with JEDEC standards for transient suppressors and supports 200 A non-repetitive forward surge current (8.3 ms half-sine). Its 3.5 V to 5.0 V forward voltage (VF) at 100 A - specified as 5.0 V for 1.5KE250A and above - ensures predictable conduction during fault conditions without latch-up risk.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Breakdown Voltage VBR | 237 V min. to 263 V max. at 1 mA - defines precise turn-on threshold for overvoltage detection |
| Standoff Voltage VWM | 214 V max. - ensures no leakage conduction during normal 200 V DC rail operation |
| Clamping Voltage VC | 344 V at 4.4 A IPPM - limits downstream voltage stress to safe levels during 1500 W surge |
| Peak Pulse Power PPPM | 1500 W (10/1000 µs) - sustains high-energy transients without failure in industrial environments |
| Operating Temperature | –55 °C to +175 °C - supports under-hood automotive and high-temp industrial deployments |
| Package | JEDEC 1.5KE case - industry-standard axial leaded TO-204AA package with 0.375" lead length |
| RoHS Compliance | E3 suffix - meets JESD 201 Class 1A whisker test and UL 94 V-0 flammability rating |
Pinout & Package
1.5KE250-E3/73 is housed in a JEDEC-standard 1.5KE axial-leaded package (case style 1.5KE), featuring a molded epoxy body over a glass-passivated junction. The cathode is marked by a color band on the body; polarity must be observed in series connection with protected circuitry.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point during reverse-biased clamping | Connected to protected line side; conducts only during overvoltage events |
| Cathode | Current exit point during clamping; marked with band | Connected to ground or low-impedance return path; establishes reference for VBR |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Enables stable VBR tolerance (±5 %) and long-term reliability under thermal cycling |
| 1500 W peak pulse power | Withstands IEC 61000-4-5 Level 4 surges (4 kV/2 Ω) without degradation |
| Sub-nanosecond response time | Clamps transients before sensitive ICs experience overstress - critical for MOSFET gate protection |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients (e.g., EFT bursts) |
| UL 94 V-0 epoxy molding | Prevents flame propagation in enclosed power modules and EV charging units |
Applications
| Industrial Motor Drives | Automotive ECUs |
|---|---|
Use Scenario: Protection of IGBT gate drivers and DC bus sensing circuits against inductive kickback from contactor switching. IC Role / Device Role / Timing Role: Unidirectional TVS placed between gate and source to clamp negative spikes below –20 V. Use Value: Prevents gate oxide rupture in 600 V IGBTs by limiting transient voltage to ≤344 V at 4.4 A, matching drive circuit withstand ratings. |
Use Scenario: Front-end protection of LIN/CAN transceiver power inputs in engine control units exposed to load dump and jump-start conditions. IC Role / Device Role / Timing Role: Primary clamping device on 12 V supply rail upstream of LDO regulators. Use Value: Withstands 1500 W surges per ISO 7637-2 Pulse 5a while maintaining VWM margin above 14.5 V battery float voltage. |
| Telecom Power Supplies | Renewable Energy Inverters |
Use Scenario: Secondary overvoltage suppression on 48 V DC distribution boards in base station cabinets subjected to lightning-induced surges. IC Role / Device Role / Timing Role: Standoff-rated TVS in parallel with bulk capacitors to absorb residual transients after MOV stages. Use Value: Clamps to 344 V within 1 ns, preventing overvoltage stress on 50 V-rated electrolytics and PMICs. |
Use Scenario: DC-link protection in solar string inverters where PV array transients couple into MPPT input stages. IC Role / Device Role / Timing Role: Unidirectional suppressor on positive DC input rail referenced to system ground. Use Value: Handles repetitive 10/1000 µs surges up to 0.01 % duty cycle without parameter drift, validated to 175 °C junction temp. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ250A | Surface-mount SMB package; 250 V VWM; 356 V VC at 3.9 A; 600 W PPPM | Limited to lower-energy transients; unsuitable for 1500 W IEC 61000-4-5 compliance | Select when board space is constrained and surge energy does not exceed 600 W |
| 1.5KE250AHE3_B | Same 1.5KE package; AEC-Q101 qualified; identical VBR, VWM, VC, and PPPM specs | Required for automotive production; adds qualification traceability and extended temperature validation | Choose for automotive OEM programs requiring AEC-Q101 documentation and lot-level PPAP support |
Compared with 1.5KE250-E3/73, SMBJ250A trades surge capacity for footprint reduction, while 1.5KE250AHE3_B provides identical electrical performance with automotive-grade process controls - making the latter a drop-in replacement only where AEC-Q101 certification is mandated.
Availability
1.5KE250-E3/73 is available at Aetrix Electronics and suitable for industrial motor drives, automotive ECUs, telecom power supplies, and renewable energy inverters requiring stable component supply, long-lifecycle sourcing, and RoHS-compliant procurement.
Supply support for 1.5KE250-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 high-reliability diodes, rectifiers, and protection devices for demanding industrial and automotive applications.
The 1.5KE series was engineered for high-energy transient suppression in harsh environments, targeting applications where legacy MOVs lack speed and precision - especially in DC power rail protection for power electronics and vehicle subsystems.
FAQ
What is the clamping voltage of the 1.5KE250-E3/73 under standard test conditions?
The 1.5KE250-E3/73 has a maximum clamping voltage (VC) of 344 V at 4.4 A peak pulse current (IPPM) using a 10/1000 µs waveform. This value is measured per JEDEC standard and reflects the actual voltage seen by downstream components during a full 1500 W surge event. The 1.5KE250-E3/73 maintains this clamping performance across its full operating temperature range.
Is the 1.5KE250-E3/73 suitable for automotive applications?
The 1.5KE250-E3/73 is rated for –55 °C to +175 °C junction temperature and meets RoHS and UL 94 V-0 requirements, but it is not AEC-Q101 qualified. For production automotive use, Vishay offers the 1.5KE250AHE3_B variant, which shares identical electrical specs and adds AEC-Q101 validation. The 1.5KE250-E3/73 remains appropriate for non-safety-critical automotive prototyping or aftermarket systems where qualification is not mandated.
How does the 1.5KE250-E3/73 compare to MOV-based protection in terms of response time?
The 1.5KE250-E3/73 responds in less than 1 nanosecond, significantly faster than metal-oxide varistors (MOVs), which typically exhibit 20–50 ns response. This sub-ns speed allows the 1.5KE250-E3/73 to protect sensitive gate drivers and data lines before voltage overshoot damages silicon - a key advantage in high-frequency switching environments where MOVs may allow destructive dv/dt excursions.
What is the forward voltage specification for the 1.5KE250-E3/73?
The 1.5KE250-E3/73 has a maximum instantaneous forward voltage (VF) of 5.0 V at 100 A, per the Vishay datasheet note stating "VF = 5.0 V for 1.5KE250A and above." This parameter applies only during unidirectional forward conduction (e.g., during negative transients on cathode-grounded configurations) and is critical for verifying compatibility with series fuse or current-limiting resistor sizing.
Can multiple 1.5KE250-E3/73 devices be paralleled to increase surge handling capacity?
Paralleling 1.5KE250-E3/73 devices is not recommended due to VBR tolerance mismatch (±5 %), which causes uneven current sharing and potential thermal runaway. Vishay explicitly advises against parallel operation in the datasheet. To increase surge capacity, use higher-power TVS families (e.g., 3KP or 5KP series) or cascade with upstream MOVs - not additional 1.5KE250-E3/73 units.
1.5KE250-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):
- 202V
- Voltage - Breakdown (Min):
- 225V
- Voltage - Clamping (Max) @ Ipp:
- 360V
- Current - Peak Pulse (10/1000µs):
- 4.2A
- 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
1.5KE250-E3/73 FAQ
1.How can I place an order for 1.5KE250-E3/73 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE250-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 1.5KE250-E3/73 reliable?
The price and inventory of 1.5KE250-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 1.5KE250-E3/73 is usually 5 days.
3.What payment methods are accepted for 1.5KE250-E3/73?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE250-E3/73 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE250-E3/73?
1.5KE250-E3/73 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE250-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 1.5KE250-E3/73?
For technical support, including 1.5KE250-E3/73 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE250-E3/73 requirements.
6.How does Aetrix verify that 1.5KE250-E3/73 is sourced from the original manufacturer or authorized distributors?
All 1.5KE250-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 1.5KE250-E3/73 meets industry standards.
7.What is the process for return or replacement of 1.5KE250-E3/73?
All 1.5KE250-E3/73 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE250-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 1.5KE250-E3/73 part is unused and in its original packaging.
Return procedure for 1.5KE250-E3/73:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE250-E3/73 Tags
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