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Vishay General Semiconductor - Diodes Division 1.5KE250A-E3/54
- Part No.:
- 1.5KE250A-E3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE250A-E3/54.pdf
- Description:
- TVS DIODE 214VWM 344VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:1,615
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Product details
Overview
1.5KE250A-E3/54 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), 214 V maximum standoff voltage (VWM), 344 V clamping voltage at 4.4 A peak pulse current, 1500 W peak pulse power rating with 10/1000 µs waveform, and operates across -55 °C to +175 °C junction temperature range - deployed in industrial power supplies and automotive ECUs.
For engineers reviewing the 1.5KE250A-E3/54 datasheet, 1.5KE250A-E3/54 pinout, 1.5KE250A-E3/54 application, or 1.5KE250A-E3/54 equivalent, this page delivers verified electrical parameters, JEDEC 1.5KE package dimensions, polarity marking convention, thermal resistance (RθJA = 75 °C/W), and real-world selection guidance against comparable TVS devices for surge-prone 24 V–48 V systems.
Technical Context
This unidirectional TVS diode uses a glass-passivated silicon junction optimized for fast clamping response (<1 ns) and low incremental surge resistance. Its 1500 W peak pulse power handling is specified under standardized 10/1000 µs waveform conditions with 0.01 % duty cycle, and it maintains stable performance up to 175 °C junction temperature.
The device exhibits a 0.110 %/°C temperature coefficient of VBR, a 5.0 V maximum forward voltage at 100 A, and 1.0 µA maximum reverse leakage at VWM. It complies with JESD22-B106 solder dip (275 °C, 10 s) and JESD201 Class 1A whisker testing, and its matte tin-plated leads meet J-STD-002 and JESD22-B102 solderability standards.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 237 V / 263 V - ensures reliable conduction onset above normal 214 V system operating voltage while avoiding false triggering |
| VWM | 214 V - maximum continuous reverse working voltage compatible with 24 V–48 V DC bus applications with safety margin |
| VC @ IPPM | 344 V - clamped voltage during 4.4 A transient limits stress on downstream MOSFETs or controllers |
| PPPM | 1500 W - handles high-energy surges such as ISO 7637-2 Pulse 1/2b or IEC 61000-4-5 Level 4 (4 kV) |
| IPPM | 4.4 A - peak pulse current capability defined at 10/1000 µs waveform, derated above 25 °C ambient |
| TJ max. | +175 °C - supports operation in under-hood automotive or enclosed industrial enclosures without thermal shutdown |
| RθJA | 75 °C/W - thermal resistance enables PCB-level heatsinking design without dedicated metal-core substrate |
Pinout & Package
Package: JEDEC DO-201AD (Case Style 1.5KE), axial-leaded, molded epoxy body meeting UL 94 V-0 flammability rating. Cathode indicated by color band on lead end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / reverse surge return path | Connected to system ground or low-side reference; completes clamping loop during positive transients |
| Cathode | Reverse-biased terminal / clamping node | Connected to protected line (e.g., 24 V rail); conducts when voltage exceeds VBR to shunt energy to ground |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Enables stable VBR tolerance (±5 %) and long-term reliability under repeated surge stress |
| 1500 W peak pulse power (10/1000 µs) | Supports EN 61000-4-5 4 kV surge immunity without cascaded protection stages |
| Clamping response time <1 ns | Protects sensitive gate oxides in SiC/GaN MOSFETs before destructive voltage overshoot occurs |
| RoHS-compliant E3 suffix | Meets JESD201 Class 1A whisker test and J-STD-002 solderability for high-reliability assembly |
| UL recognition (QVGQ2) | Validated per UL 497B for telecom and industrial surge protector classification |
Applications
| Industrial Power Supply Protection | Automotive Body Control Module |
|---|---|
Use Scenario: 24 V DC input stage of programmable logic controller (PLC) power supply exposed to load dump and relay switching transients. IC Role / Device Role / Timing Role: Primary overvoltage clamp placed between input rail and ground, activated within nanoseconds upon exceeding 237 V. Use Value: Limits transient voltage to ≤344 V, preventing damage to upstream rectifier diodes and downstream DC-DC controllers rated for 400 V max. | Use Scenario: CAN-FD data line protection in vehicle body control unit subjected to ISO 7637-2 Pulse 5a (load dump). IC Role / Device Role / Timing Role: Unidirectional TVS connected anode-to-ground, cathode-to-CAN_H, clamping positive excursions only. Use Value: Maintains signal integrity below 344 V while preserving CAN common-mode range; no added capacitance degrades 5 Mbps timing budget. |
| Telecom Remote Terminal Unit | Renewable Energy Inverter DC Link |
Use Scenario: 48 V backup battery interface in outdoor telecom RTU, subject to lightning-induced surges on long copper runs. IC Role / Device Role / Timing Role: First-line defense on battery feed line, coordinated with secondary MOV-based AC/DC front-end protection. Use Value: Absorbs initial 1500 W surge energy before thermal runaway in parallel MOVs, extending overall system surge lifetime. | Use Scenario: DC link overvoltage suppression in solar string inverter where PV array transients couple into 600 V DC bus. IC Role / Device Role / Timing Role: High-voltage TVS placed across DC link capacitors to clamp switching spikes and grid fault transients. Use Value: Clamps to 344 V at 4.4 A, protecting IGBT gate drivers and sensing circuitry without requiring active crowbar circuits. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ250A | Lower PPPM (600 W), smaller SMB package (vs. DO-201AD), VC = 414 V @ 1.4 A | Not suitable for 4 kV IEC 61000-4-5 Level 4; limited to lower-energy surges in space-constrained designs | Select only if board area is critical and surge threat level is ≤2 kV; verify thermal derating at 75 °C ambient |
| 1.5SMC250A | Same PPPM (1500 W), SMC package (DO-214AB), VC = 344 V @ 4.4 A, identical VBR/VWM | Surface-mount alternative enabling automated assembly; requires PCB pad layout change and reflow profile validation | Drop-in replacement for automated production; same clamping behavior but different thermal path (RθJA ≈ 50 °C/W) |
Compared with 1.5KE250A-E3/54, SMBJ250A offers footprint reduction at the cost of 60 % lower surge energy handling, while 1.5SMC250A matches electrical performance in an SMT package - enabling volume manufacturing but requiring layout revision and thermal redesign.
Availability
1.5KE250A-E3/54 is available at Aetrix Electronics and suitable for industrial power supplies, automotive body control modules, telecom remote terminal units, and renewable energy inverter DC links requiring stable component supply across extended product lifecycles.
Supply support for 1.5KE250A-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, MOSFETs, and protection devices with emphasis on reliability and ruggedness.
The 1.5KE series is engineered for high-energy transient suppression in harsh environments - targeting automotive, industrial, and telecom applications where sustained surge immunity and long-term parametric stability are mandatory.
FAQ
What is the breakdown voltage tolerance for 1.5KE250A-E3/54?
The 1.5KE250A-E3/54 has a guaranteed breakdown voltage range of 237 V to 263 V at 1.0 mA test current, corresponding to a ±5 % tolerance. This tight specification ensures consistent clamping onset across production lots and supports robust design margins in 24 V–48 V systems where overvoltage thresholds must remain predictable over temperature and lifetime.
Does 1.5KE250A-E3/54 support automotive qualification?
No - the 1.5KE250A-E3/54 is commercial grade only, as explicitly stated in the Vishay datasheet. AEC-Q101 qualified variants exist only for 1.5KE6.8AHE3_B through 1.5KE220AHE3_B and their bidirectional counterparts; 1.5KE250A and above are not AEC-Q101 certified. For automotive use, consider 1.5KE220AHE3_B or alternate AEC-Q101-rated TVS families.
How is polarity identified on the 1.5KE250A-E3/54 package?
The 1.5KE250A-E3/54 uses a color band (typically black or dark gray) on the cathode end of the axial DO-201AD package to indicate polarity. The banded end connects to the protected line (e.g., 24 V rail), while the unbanded end connects to ground. This marking conforms to JEDEC standard polarity conventions for unidirectional TVS diodes and is visible without magnification.
What is the maximum clamping voltage of 1.5KE250A-E3/54 under surge conditions?
The maximum clamping voltage (VC) of 1.5KE250A-E3/54 is 344 V, measured at its peak pulse current (IPPM) of 4.4 A using the standard 10/1000 µs waveform. This value defines the upper voltage limit imposed on protected circuitry during worst-case transient events and is critical for ensuring downstream components remain within their absolute maximum ratings.
Can 1.5KE250A-E3/54 be used in bidirectional configurations?
No - the 1.5KE250A-E3/54 is strictly unidirectional. Bidirectional versions in the 1.5KE family are designated with a "CA" suffix (e.g., 1.5KE220CA) and are only available up to 220 V VBR. The datasheet explicitly states that bidirectional types are unavailable for 1.5KE250A and higher, making 1.5KE250A-E3/54 unsuitable for AC line or differential signal protection without external circuitry.
1.5KE250A-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:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- 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
1.5KE250A-E3/54 FAQ
1.How can I place an order for 1.5KE250A-E3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE250A-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 1.5KE250A-E3/54 reliable?
The price and inventory of 1.5KE250A-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 1.5KE250A-E3/54 is usually 5 days.
3.What payment methods are accepted for 1.5KE250A-E3/54?
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1.5KE250A-E3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE250A-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 1.5KE250A-E3/54?
For technical support, including 1.5KE250A-E3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE250A-E3/54 requirements.
6.How does Aetrix verify that 1.5KE250A-E3/54 is sourced from the original manufacturer or authorized distributors?
All 1.5KE250A-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 1.5KE250A-E3/54 meets industry standards.
7.What is the process for return or replacement of 1.5KE250A-E3/54?
All 1.5KE250A-E3/54 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE250A-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 1.5KE250A-E3/54 part is unused and in its original packaging.
Return procedure for 1.5KE250A-E3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE250A-E3/54 Tags
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