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Vishay General Semiconductor - Diodes Division 1.5KE250CA-E3/54
- Part No.:
- 1.5KE250CA-E3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE250CA-E3/54.pdf
- Description:
- TVS DIODE 214VWM 344VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:4,185
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Product details
Overview
1.5KE250CA-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 250 V standoff voltage (VWM), 237–263 V breakdown voltage (VBR) at 1 mA, 1500 W peak pulse power (10/1000 µs), clamping voltage of 344 V at 4.4 A, and operates from –55 °C to +175 °C. It protects MOSFETs, ICs, and sensor interfaces in industrial power supplies and telecom line cards.
For engineers reviewing the 1.5KE250CA-E3/54 datasheet, 1.5KE250CA-E3/54 pinout, 1.5KE250CA-E3/54 application, or 1.5KE250CA-E3/54 equivalent, this device delivers verified bidirectional clamping performance, JEDEC-standard 1.5KE package compatibility, and RoHS-compliant commercial-grade construction - critical for ESD and lightning-induced transient suppression in DC power rails and analog front-ends.
Technical Context
This TVS diode uses a glass-passivated silicon junction optimized for fast response (<1 ns) and low incremental surge resistance. Its bidirectional structure enables symmetrical clamping across both polarities without polarity marking, supporting AC-coupled or floating signal paths. The device meets UL 497B recognition (QVGQ2) and complies with JESD22-B106 soldering standards (275 °C, 10 s).
Thermal design is supported by RθJL = 15.4 °C/W (junction-to-lead) and RθJA = 75 °C/W (junction-to-ambient), enabling reliable operation under repetitive surges when mounted on PCB copper pours. Derating above 25 °C ambient follows Fig. 2 in the datasheet, with full power maintained up to TL = 75 °C on leads.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 214 V - maximum continuous reverse working voltage before clamping initiates |
| VBR min/max | 237 V / 263 V at 1 mA - precise breakdown threshold ensures predictable turn-on during transients |
| VC @ IPPM | 344 V at 4.4 A - clamping voltage limits downstream component stress during 10/1000 µs surges |
| PPPM | 1500 W - peak pulse power handling capability per standard 10/1000 µs waveform |
| ID @ VWM | 1.0 µA - ultra-low leakage preserves signal integrity and minimizes standby power loss |
| TJ max | +175 °C - extended junction temperature rating supports operation in high-ambient industrial environments |
| Package | Case Style 1.5KE - industry-standard DO-201AD axial leaded package with 0.375" lead length |
Pinout & Package
1.5KE250CA-E3/54 uses the DO-201AD (Case Style 1.5KE) axial-leaded package with no polarity marking - consistent with its bidirectional function. Leads are matte tin-plated and compliant with J-STD-002 and JESD 22-B102 solderability standards.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (unmarked) | Bidirectional terminal pair | Either end serves as anode or cathode depending on transient polarity - no orientation required during placement |
| Lead 1 | Current path input | Conducts surge current into junction during positive or negative overvoltage events |
| Lead 2 | Current path return | Completes low-inductance path to ground or reference rail during clamping action |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Enables stable VBR tolerance and long-term reliability under thermal cycling and humidity exposure |
| 1500 W peak pulse power (10/1000 µs) | Withstands IEC 61000-4-5 Level 4 surges (4 kV line-earth) without degradation when properly routed |
| Clamping ratio VC/VBR ≈ 1.45 | Provides tight voltage limiting margin - critical for protecting 300 V-rated MOSFETs and gate drivers |
| Response time < 1 ns | Acts before induced transients propagate through PCB traces, preserving signal integrity in high-speed analog paths |
| UL 497B recognized (QVGQ2) | Validated for use in telecom and industrial equipment requiring certified surge protection components |
Applications
| AC Power Input Protection | DC Power Rail Clamping |
|---|---|
Use Scenario: Protecting AC-DC adapter inputs against lightning-induced surges on 230 VAC mains lines. IC Role / Device Role / Timing Role: Bidirectional TVS placed across live-neutral and live-ground to clamp common-mode and differential transients. Use Value: Limits peak voltage to ≤344 V, preventing damage to bridge rectifiers and primary-side controllers. | Use Scenario: Safeguarding 24 VDC industrial control rails from inductive kickback from solenoid drivers. IC Role / Device Role / Timing Role: Parallel-connected TVS absorbing energy from L·di/dt spikes exceeding 214 V. Use Value: Clamps transients within 1 ns, avoiding latch-up or gate oxide rupture in downstream MOSFETs. |
| Sensor Signal Line Protection | Telecom Line Interface |
Use Scenario: Shielding 4–20 mA current loop sensors in factory automation from ESD and cable discharge events. IC Role / Device Role / Timing Role: Bidirectional TVS installed across signal and return lines near connector entry point. Use Value: Maintains <1 µA leakage at 214 V, ensuring loop accuracy while suppressing ±8 kV contact ESD per IEC 61000-4-2. | Use Scenario: Hardening POTS line interface circuits in VoIP gateways against longitudinal surges per GR-1089-CORE. IC Role / Device Role / Timing Role: Primary protection element on tip/ring lines before hybrid transformer and SLIC. Use Value: UL 497B recognition confirms compliance with telecom safety and surge immunity requirements. |
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 SMAJ250CA | Same 250 V VWM, but 400 W PPPM (SMA package); lower clamping voltage (356 V @ 3.2 A) | Lower power rating suits space-constrained PCBs; less suitable for repeated high-energy surges | Select when board area is limited and surge duty cycle is low (e.g., consumer electronics) |
| ON Semiconductor 1.5SMC250CA | Same 250 V VWM, 1500 W PPPM, but SMC (DO-214AB) surface-mount package; slightly higher VC (356 V @ 4.2 A) | Enables automated assembly and higher density layouts; thermal path differs due to SMT pad design | Select for reflow-soldered designs requiring same power rating but smaller footprint than axial 1.5KE |
Compared with 1.5KE250CA-E3/54, SMAJ250CA trades peak power for compactness, while 1.5SMC250CA retains equivalent surge capability in a surface-mount form factor - choice depends on mechanical layout constraints, thermal management strategy, and production assembly method.
Availability
1.5KE250CA-E3/54 is available at Aetrix Electronics and suitable for industrial power supplies, telecom line cards, and sensor interface modules requiring stable component supply, long-lifecycle support, and traceable RoHS-compliant sourcing.
Supply support for 1.5KE250CA-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 automotive/industrial qualification.
The 1.5KE series was engineered specifically for high-energy transient suppression in harsh environments, targeting applications where robustness, repeatable clamping, and regulatory recognition (UL 497B) are mandatory.
FAQ
What is the breakdown voltage range for 1.5KE250CA-E3/54?
The 1.5KE250CA-E3/54 has a guaranteed breakdown voltage (VBR) range of 237 V to 263 V at 1 mA test current, measured per JEDEC standard. This tight tolerance ensures consistent clamping behavior across production lots and supports reliable system-level surge margin calculations in designs using 1.5KE250CA-E3/54.
Is 1.5KE250CA-E3/54 suitable for automotive applications?
No - 1.5KE250CA-E3/54 is a commercial-grade part (E3 suffix) and not AEC-Q101 qualified. For automotive use, Vishay offers the HE3 variant (e.g., 1.5KE250CAHE3_B), which undergoes stress testing per AEC-Q101. The 1.5KE250CA-E3/54 is rated for industrial and telecom applications only.
What does the "CA" suffix mean in 1.5KE250CA-E3/54?
The "CA" suffix in 1.5KE250CA-E3/54 denotes a bidirectional configuration - meaning the device provides symmetrical transient suppression for both positive and negative voltage excursions. Unlike unidirectional variants (e.g., 1.5KE250A), 1.5KE250CA-E3/54 has no cathode marking and functions identically regardless of polarity applied across its terminals.
Can 1.5KE250CA-E3/54 be used in parallel to increase surge current handling?
Yes - multiple 1.5KE250CA-E3/54 units can be paralleled to distribute surge current, provided layout symmetry, matched trace inductance, and thermal coupling are controlled. However, derating is required: total peak current must not exceed the sum of individual IPPM ratings multiplied by 0.85 to account for dynamic mismatch during fast transients.
What is the maximum clamping voltage for 1.5KE250CA-E3/54 at its rated peak pulse current?
The maximum clamping voltage (VC) for 1.5KE250CA-E3/54 is 344 V at 4.4 A peak pulse current (IPPM), measured under the standard 10/1000 µs waveform. This value defines the upper voltage limit imposed on protected circuitry during worst-case surge events and is critical for validating safe operating margins of downstream components.
1.5KE250CA-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:
- 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-E3/54 FAQ
1.How can I place an order for 1.5KE250CA-E3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE250CA-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 1.5KE250CA-E3/54 reliable?
The price and inventory of 1.5KE250CA-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 1.5KE250CA-E3/54 is usually 5 days.
3.What payment methods are accepted for 1.5KE250CA-E3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE250CA-E3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE250CA-E3/54?
1.5KE250CA-E3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE250CA-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 1.5KE250CA-E3/54?
For technical support, including 1.5KE250CA-E3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE250CA-E3/54 requirements.
6.How does Aetrix verify that 1.5KE250CA-E3/54 is sourced from the original manufacturer or authorized distributors?
All 1.5KE250CA-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 1.5KE250CA-E3/54 meets industry standards.
7.What is the process for return or replacement of 1.5KE250CA-E3/54?
All 1.5KE250CA-E3/54 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE250CA-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 1.5KE250CA-E3/54 part is unused and in its original packaging.
Return procedure for 1.5KE250CA-E3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE250CA-E3/54 Tags
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