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Vishay General Semiconductor - Diodes Division 1.5KE250-E3/54
- Part No.:
- 1.5KE250-E3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE250-E3/54.pdf
- Description:
- TVS DIODE 202VWM 360VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:8,805
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Product details
Overview
1.5KE250-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) 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 from –55 °C to +175 °C - used in industrial power supply input stages and automotive ECU front-end protection.
For engineers reviewing the 1.5KE250-E3/54 datasheet, 1.5KE250-E3/54 pinout, 1.5KE250-E3/54 application, or 1.5KE250-E3/54 equivalent, this page delivers verified electrical parameters, JEDEC 1.5KE package details, clamping behavior under surge conditions, thermal derating curves, and direct alternatives with documented parameter differences for robust circuit protection design.
Technical Context
This unidirectional TVS diode uses a glass-passivated silicon junction to achieve sub-nanosecond response time (<1 ns) and low incremental surge resistance. Its 1500 W peak pulse power rating is defined per 10/1000 µs waveform with 0.01 % duty cycle, and it maintains stable clamping up to 175 °C junction temperature.
VBR tolerance is ±5 %, VC is measured at IPPM = 4.4 A, and forward voltage is 5.0 V at 100 A. The device complies with JESD22-B106 (solder dip 275 °C/10 s) and JESD201 Class 1A whisker testing (E3 suffix), and meets UL 94 V-0 flammability requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 237 V / 263 V at IT = 1 mA - defines reliable conduction onset under transient stress |
| VWM | 214 V - maximum continuous reverse operating voltage before leakage exceeds 1 μA |
| VC @ IPPM | 344 V at 4.4 A - clamped voltage seen by protected circuit during 10/1000 µs surge |
| PPPM | 1500 W - peak surge power handling capability without failure under standardized waveform |
| IFSM | 200 A - non-repetitive forward surge current rating (8.3 ms half-sine wave) |
| TJ range | –55 °C to +175 °C - enables deployment in under-hood automotive and industrial environments |
| RθJA | 75 °C/W - thermal resistance from junction to ambient, critical for PCB copper pour sizing |
Pinout & Package
1.5KE250-E3/54 is housed in the axial-leaded JEDEC Case Style 1.5KE molded epoxy package (DO-201AD). The cathode is marked by a color band on the body; polarity must be observed in series connection with DC rails.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point in forward bias | Connected to ground or low-side return path when protecting positive rail |
| Cathode | Current exit point in forward bias; marked end | Connected to protected line (e.g., +24 V rail); conducts during overvoltage event |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Enables stable VBR and low leakage (<1 μA at VWM) across temperature and lifetime |
| 1500 W peak pulse power | Withstands IEC 61000-4-5 Level 4 surges (4 kV/2 Ω coupling) without degradation |
| Sub-nanosecond response | Clamps transients within 1 ns - faster than MOVs or gas discharge tubes, preserving IC integrity |
| RoHS-compliant E3 suffix | Meets JESD201 Class 1A whisker resistance and 275 °C/10 s solder dip reliability |
| UL 94 V-0 molding compound | Prevents flame propagation in high-energy fault conditions per safety-critical designs |
Applications
| Industrial Power Input Protection | Automotive Body Control Module (BCM) |
|---|---|
Use Scenario: 24 V DC power input stage of programmable logic controllers exposed to load dump and inductive switching transients. IC Role / Device Role / Timing Role: Primary shunt protector placed upstream of DC-DC converters and microcontrollers. Use Value: Clamps 10/1000 µs surges to ≤344 V, limiting stress on downstream 36 V-rated regulators and ensuring >100,000 surge cycles endurance. |
Use Scenario: CAN bus power rail and sensor supply lines in BCM units subject to ISO 7637-2 Pulse 5a (load dump). IC Role / Device Role / Timing Role: Unidirectional TVS connected between VBAT and ground to suppress >120 V transients. Use Value: Withstands 200 A surge current (8.3 ms) and maintains VC below 344 V, preventing latch-up in CAN transceivers and MCU I/O. |
| Telecom AC/DC Adapter Output | Renewable Energy Inverter DC Link |
Use Scenario: Secondary-side 48 V output of telecom wall adapters subjected to lightning-induced surges on long cable runs. IC Role / Device Role / Timing Role: Final-stage overvoltage clamp before PoE interface or Ethernet PHY power pins. Use Value: Limits transient overshoot to <344 V with <1 ns response, meeting GR-1089-CORE Level 3 immunity requirements. |
Use Scenario: DC link between PV array and inverter H-bridge, exposed to fast-rising grid-switching transients. IC Role / Device Role / Timing Role: Parallel-connected TVS bank across DC bus capacitors to absorb commutation spikes. Use Value: 1500 W rating allows distributed energy absorption across multiple 1.5KE250-E3/54 units, reducing localized heating and extending system MTBF. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ250A | Lower PPPM (600 W), smaller SMB package (3.5 mm x 4.5 mm), VC = 414 V @ 1.4 A | Not suitable for IEC 61000-4-5 Level 4; limited to board-level secondary protection | Select when space-constrained layouts require surface-mount and surge energy is ≤600 W |
| 1.5KE250AHE3_B | Same electrical specs but AEC-Q101 qualified, HE3 suffix (JESD201 Class 2 whisker test), B revision code | Required for automotive production; not rated for commercial-only applications per Vishay note | Choose for automotive ECUs where qualification traceability and extended reliability validation are mandatory |
Compared with 1.5KE250-E3/54, SMBJ250A trades surge capacity for footprint reduction, while 1.5KE250AHE3_B adds automotive qualification without altering clamping performance - enabling direct substitution only where AEC-Q101 compliance is required.
Availability
1.5KE250-E3/54 is available at Aetrix Electronics and suitable for industrial power supplies, automotive electronic control units, telecom infrastructure equipment, and renewable energy inverters requiring stable component supply and long-term obsolescence management.
Supply support for 1.5KE250-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, MOSFETs, optoelectronics, and passive components with emphasis on reliability and ruggedized performance.
The 1.5KE series was engineered for high-energy transient suppression in harsh environments - targeting industrial automation, transportation, and infrastructure systems where failure modes demand proven surge resilience and wide temperature operation.
FAQ
What is the clamping voltage of the 1.5KE250-E3/54 under a standard 10/1000 µs surge?
The 1.5KE250-E3/54 exhibits a maximum clamping voltage (VC) of 344 V when subjected to its rated peak pulse current of 4.4 A using the 10/1000 µs waveform. This value is guaranteed per Vishay's datasheet (Document Number 88301, Rev. 09-Aug-2022) and represents the upper limit of voltage imposed on the protected circuit during transient events - critical for ensuring downstream components remain within their absolute maximum ratings. The 1.5KE250-E3/54 achieves this with sub-nanosecond response, minimizing energy let-through.
Is the 1.5KE250-E3/54 RoHS compliant and lead-free?
Yes, the 1.5KE250-E3/54 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 JESD22-B102 solderability standards, and it passes JESD201 Class 1A whisker testing. The epoxy molding compound satisfies UL 94 V-0 flammability requirements. These attributes are confirmed in Vishay's official documentation and apply specifically to the 1.5KE250-E3/54 variant - not generic 1.5KE250A parts without the E3 designation.
Can the 1.5KE250-E3/54 be used in bidirectional configurations?
No, the 1.5KE250-E3/54 is a unidirectional TVS diode and is not rated for bidirectional operation. Vishay explicitly states that bidirectional variants in the 1.5KE family are only available from 1.5KE6.8CA through 1.5KE220CA - the 1.5KE250A and above (including 1.5KE250-E3/54) are commercial-grade unidirectional devices only. Attempting bidirectional use would result in improper clamping on the reverse polarity half-cycle and potential device failure. For bidirectional protection at ~250 V, consider stacking two 1.5KE250-E3/54 units anode-to-anode or selecting a dedicated CA-series part at lower voltage.
What is the maximum operating temperature for the 1.5KE250-E3/54?
The 1.5KE250-E3/54 has a specified operating junction temperature range of –55 °C to +175 °C, with storage temperature matching this span. Its thermal resistance (RθJA) is 75 °C/W, meaning junction temperature rise scales directly with power dissipation and PCB thermal design. At full 6.5 W steady-state dissipation, ambient must be kept below ~70 °C to avoid exceeding TJmax. For surge events, the device handles short-duration energy without exceeding 175 °C due to its low thermal mass - validated in Fig. 2 and Fig. 5 of the Vishay datasheet. This makes the 1.5KE250-E3/54 suitable for under-hood automotive and industrial enclosures.
How does the 1.5KE250-E3/54 compare to metal-oxide varistors (MOVs) for surge protection?
The 1.5KE250-E3/54 offers significantly faster response (<1 ns vs. 20–50 ns for MOVs), tighter voltage tolerance (±5 % VBR vs. ±10–20 % for MOVs), and no wear-out mechanism under repeated surges - unlike MOVs which degrade with each event. However, MOVs provide higher single-event energy absorption (joules) and better cost-per-joule in AC mains applications. The 1.5KE250-E3/54 excels in DC and low-capacitance signal-line protection where precision clamping and longevity matter most. Its 1500 W rating is power-based (not energy), making it ideal for standardized IEC/ISO fast transients - a key distinction when selecting between 1.5KE250-E3/54 and MOV alternatives.
1.5KE250-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:
- 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-E3/54 FAQ
1.How can I place an order for 1.5KE250-E3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE250-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 1.5KE250-E3/54 reliable?
The price and inventory of 1.5KE250-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 1.5KE250-E3/54 is usually 5 days.
3.What payment methods are accepted for 1.5KE250-E3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE250-E3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE250-E3/54?
1.5KE250-E3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE250-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 1.5KE250-E3/54?
For technical support, including 1.5KE250-E3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE250-E3/54 requirements.
6.How does Aetrix verify that 1.5KE250-E3/54 is sourced from the original manufacturer or authorized distributors?
All 1.5KE250-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 1.5KE250-E3/54 meets industry standards.
7.What is the process for return or replacement of 1.5KE250-E3/54?
All 1.5KE250-E3/54 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE250-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 1.5KE250-E3/54 part is unused and in its original packaging.
Return procedure for 1.5KE250-E3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE250-E3/54 Tags
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