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Vishay General Semiconductor - Diodes Division 1.5KE250CA-E3/73
- Part No.:
- 1.5KE250CA-E3/73
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE250CA-E3/73.pdf
- Description:
- TVS DIODE 214VWM 344VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:8,596
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Product details
Overview
1.5KE250CA-E3/73 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 250 V standoff voltage (VWM), 237–263 V breakdown voltage (VBR) at 1 mA, 344 V clamping voltage (VC) at 4.4 A peak pulse current, and 1500 W peak pulse power capability with a 10/1000 µs waveform. It is used to protect MOSFETs, ICs, and sensor interfaces in industrial power supplies and telecom line cards.
For engineers reviewing the 1.5KE250CA-E3/73 datasheet, 1.5KE250CA-E3/73 pinout, 1.5KE250CA-E3/73 application, or 1.5KE250CA-E3/73 equivalent, this page delivers verified electrical parameters, JEDEC 1.5KE package details, bidirectional clamping behavior, thermal derating curves, and RoHS-compliant commercial-grade sourcing guidance - all specific to the 1.5KE250CA-E3/73 variant.
Technical Context
This TVS diode operates symmetrically in both directions, with identical VBR, VC, and ID specifications across polarity. Its glass-passivated junction enables sub-nanosecond response time (<1 ns), low incremental surge resistance, and stable clamping under repetitive 10/1000 µs transients at 0.01% duty cycle.
It is rated for TJ = –55 °C to +175 °C, with thermal resistance RθJA = 75 °C/W and RθJL = 15.4 °C/W. The device exhibits a temperature coefficient of VBR = +0.110 %/°C and forward voltage VF = 5.0 V at 100 A (unidirectional test condition, not applicable here due to bidirectional configuration).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 214 V - maximum continuous reverse working voltage before clamping initiates |
| VBR (Breakdown Voltage) | 237–263 V at IT = 1 mA - precise voltage threshold where avalanche conduction begins |
| VC (Clamping Voltage) | 344 V at IPPM = 4.4 A - peak voltage seen by protected circuit during 10/1000 µs surge |
| PPPM (Peak Pulse Power) | 1500 W - energy-handling capacity for transient suppression without failure |
| ID (Reverse Leakage) | 1.0 µA at VWM - negligible leakage current ensuring minimal standby power loss |
| TJ Range | –55 °C to +175 °C - extended thermal operating range for harsh industrial environments |
| Package | JEDEC 1.5KE - axial-lead DO-201AD package with matte tin-plated leads, UL 94 V-0 molding |
Pinout & Package
1.5KE250CA-E3/73 uses the standard DO-201AD (Case Style 1.5KE) axial-leaded package. Bidirectional construction means no cathode/anode marking; terminals are electrically symmetrical and interchangeable.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Transient current path | Both leads serve as identical surge conduction paths; no polarity dependency in circuit layout |
| Leads (matte tin plated) | PCB interface and thermal path | Solderable per J-STD-002/JESD 22-B102; supports 275 °C solder dip (10 s max) |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC lines or differential signals without polarity concerns |
| 1500 W peak pulse power | Withstands lightning-induced surges (IEC 61000-4-5 Level 4) on telecom or industrial power rails |
| Glass passivated junction | Ensures long-term reliability and stable VBR over temperature and lifetime cycling |
| Sub-nanosecond response | Clamps transients within <1 ns, protecting fast-switching MOSFETs and precision analog front-ends |
| RoHS-compliant E3 suffix | Meets JESD 201 Class 1A whisker resistance; suitable for commercial-grade automated assembly |
Applications
| Industrial Motor Drives | Telecom Line Cards |
|---|---|
|
Use Scenario: Protection of gate drivers and IGBTs against inductive kickback during contactor switching in HVAC and pump controls. IC Role / Device Role / Timing Role: Standoff-mode TVS placed across DC bus or gate-source terminals to clamp voltage spikes before they exceed MOSFET VDS or VGS ratings. Use Value: Prevents cumulative degradation of power semiconductors by limiting transient overvoltage to ≤344 V, well below 600 V IGBT breakdown thresholds. |
Use Scenario: Surge protection on POTS (Plain Old Telephone Service) line interfaces exposed to lightning-induced common-mode transients. IC Role / Device Role / Timing Role: Bidirectional shunt element installed between tip/ring and ground to divert 10/1000 µs surges away from SLIC and codec ICs. Use Value: Maintains signal integrity by clamping transients within 1 ns while adding <0.5 pF parasitic capacitance - negligible impact on voice-band frequency response. |
| Power Supply Input Stages | Automotive Body Control Modules |
|
Use Scenario: Input-stage protection for 24 V industrial SMPS subjected to load dump and ISO 7637-2 pulse 5a/b. IC Role / Device Role / Timing Role: Primary overvoltage clamp parallel to bulk capacitor, absorbing up to 1500 W for 1 ms without thermal runaway. Use Value: Eliminates need for series fusing or redundant TVS stacks - single 1.5KE250CA-E3/73 handles full surge energy per IEC 61000-4-5 Ed.3 Annex C. |
Use Scenario: Protection of LIN bus transceivers and microcontroller I/O pins against battery reverse connection and jump-start transients. IC Role / Device Role / Timing Role: Bidirectional clamp on LIN data line referenced to chassis ground, suppressing ±100 V transients. Use Value: Complies with ISO 16750-2 Section 4.7 (reverse battery) and Section 4.4 (supply voltage transients), enabling drop-in use in non-AEC-Q101 designs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ250CA | DO-214AA package; lower PPPM (600 W); higher VC (414 V at 3.6 A) | Surface-mount only; unsuitable for through-hole legacy boards or high-current leaded layouts | Select when board space is constrained and peak surge energy is ≤600 W |
| 1.5KE250A-E3/73 | Unidirectional version; same VBR/VC/PPPM but asymmetric conduction (cathode-marked) | Requires correct polarity placement; cannot protect AC or differential signals without external diode pairing | Choose only for DC rail protection where polarity is fixed and reverse-voltage blocking is required |
Compared with SMBJ250CA and 1.5KE250A-E3/73, the 1.5KE250CA-E3/73 uniquely delivers through-hole bidirectional clamping at full 1500 W in the proven 1.5KE package - making it optimal for retrofit, high-reliability, or mixed-signal industrial designs where polarity independence and mechanical robustness are critical.
Availability
1.5KE250CA-E3/73 is available at Aetrix Electronics and suitable for industrial motor drives, telecom line cards, power supply input stages, and automotive body control modules requiring stable component supply and long-lifecycle support.
Supply support for 1.5KE250CA-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 reliability, ruggedness, and application-specific validation.
The 1.5KE series was engineered for high-energy transient suppression in demanding industrial, telecom, and transportation systems - prioritizing clamping precision, thermal stability, and JEDEC-standardized mechanical compatibility.
FAQ
What is the clamping voltage of the 1.5KE250CA-E3/73 under a 10/1000 µs surge?
The 1.5KE250CA-E3/73 clamps to a maximum of 344 V when subjected to its rated peak pulse current of 4.4 A with a 10/1000 µs waveform. This value is measured per Figure 9 in the Vishay 88301 datasheet and reflects worst-case incremental clamping (VC − VBR) under standardized surge conditions. Designers must ensure downstream components have voltage margins exceeding 344 V.
Is the 1.5KE250CA-E3/73 RoHS compliant and lead-free?
Yes, the 1.5KE250CA-E3/73 carries the "E3" suffix, indicating full RoHS compliance per Directive 2011/65/EU and exemption 7a. Its matte tin-plated leads meet J-STD-002 and JESD 22-B102 solderability standards, and it passes JESD 201 Class 1A whisker testing. No lead or other restricted substances exceed EU-mandated thresholds.
Can the 1.5KE250CA-E3/73 be used in automotive applications?
The 1.5KE250CA-E3/73 is a commercial-grade part and is not AEC-Q101 qualified. While it meets key environmental specs (TJ = –55 °C to +175 °C), Vishay only certifies the HE3-suffix variants (e.g., 1.5KE250CAHE3_B) for automotive use. For body control modules or infotainment systems requiring qualification, the HE3 version must be specified - the 1.5KE250CA-E3/73 remains appropriate for non-safety-critical aftermarket or industrial vehicle systems.
What is the thermal resistance of the 1.5KE250CA-E3/73, and how does it affect PCB layout?
The 1.5KE250CA-E3/73 has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W and junction-to-lead resistance (RθJL) of 15.4 °C/W. To maintain safe operation under repetitive surges, PCB traces connected to its leads should be ≥0.5 mm wide and ≥25 mm long to emulate the 0.375" (9.5 mm) lead length used in JEDEC testing. Excessive copper pour near the body may reduce effective RθJA but risks mechanical stress during thermal cycling.
How does the bidirectional nature of the 1.5KE250CA-E3/73 impact circuit design versus unidirectional TVS diodes?
The 1.5KE250CA-E3/73 provides symmetrical clamping in both polarities, eliminating orientation constraints during placement and enabling protection of AC-coupled or differential lines (e.g., RS-485, LIN) with a single device. Unlike unidirectional types such as 1.5KE250A-E3/73, it requires no cathode marking or polarity-aware routing - simplifying layout and reducing BOM count in mixed-signal systems.
1.5KE250CA-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:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 214V
- Voltage - Breakdown (Min):
- 237V
- Voltage - Clamping (Max) @ Ipp:
- 344V
- Current - Peak Pulse (10/1000µs):
- 4.4A
- 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
1.5KE250CA-E3/73 FAQ
1.How can I place an order for 1.5KE250CA-E3/73 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE250CA-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 1.5KE250CA-E3/73 reliable?
The price and inventory of 1.5KE250CA-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 1.5KE250CA-E3/73 is usually 5 days.
3.What payment methods are accepted for 1.5KE250CA-E3/73?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE250CA-E3/73 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE250CA-E3/73?
1.5KE250CA-E3/73 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE250CA-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 1.5KE250CA-E3/73?
For technical support, including 1.5KE250CA-E3/73 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE250CA-E3/73 requirements.
6.How does Aetrix verify that 1.5KE250CA-E3/73 is sourced from the original manufacturer or authorized distributors?
All 1.5KE250CA-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 1.5KE250CA-E3/73 meets industry standards.
7.What is the process for return or replacement of 1.5KE250CA-E3/73?
All 1.5KE250CA-E3/73 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE250CA-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 1.5KE250CA-E3/73 part is unused and in its original packaging.
Return procedure for 1.5KE250CA-E3/73:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE250CA-E3/73 Tags
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Diodes Incorporated
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