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Vishay General Semiconductor - Diodes Division 1.5KE200A-E3/51
- Part No.:
- 1.5KE200A-E3/51
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE200A-E3/51.pdf
- Description:
- TVS DIODE 171VWM 274VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:5,315
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Product details
Overview
1.5KE200A-E3/51 from Vishay General Semiconductor is a unidirectional Transient Voltage Suppressor (TVS) diode designed for primary-side overvoltage protection in power rails and signal lines. It features a 200 V breakdown voltage (VBR = 190–210 V at 1 mA), 1500 W peak pulse power (10/1000 µs), clamping voltage of 274 V at 5.5 A, 175 °C max junction temperature, and RoHS-compliant matte tin-plated leads - used in automotive power supply input stages and industrial motor drive DC bus protection.
For engineers reviewing the 1.5KE200A-E3/51 datasheet, 1.5KE200A-E3/51 pinout, 1.5KE200A-E3/51 application, or 1.5KE200A-E3/51 equivalent, this page delivers verified electrical parameters, thermal derating behavior, clamping performance under surge conditions, and direct-fit alternatives for ESD/lightning transient suppression in high-reliability 24 V–48 V systems.
Technical Context
This unidirectional TVS operates as a voltage-clamped shunt protector: when reverse voltage exceeds VBR, it avalanches into low-impedance conduction to divert surge current away from downstream ICs or MOSFETs. Its glass-passivated junction ensures stable breakdown and low leakage (<1 µA at 171 V).
It delivers 1500 W peak pulse power with a 10/1000 µs waveform at 0.01% duty cycle, exhibits 15.4 °C/W junction-to-lead thermal resistance, and maintains clamping integrity up to 175 °C junction temperature - enabling robust operation in under-hood automotive and factory-floor industrial environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 190 V / 210 V at 1 mA - defines precise avalanche initiation threshold for reliable overvoltage triggering |
| VWM | 171 V - maximum continuous reverse working voltage; ensures no conduction during normal 24 V–48 V rail operation |
| VC @ IPPM | 274 V at 5.5 A - clamping voltage limits downstream component stress during 1500 W transients |
| PPPM | 1500 W (10/1000 µs) - enables protection against lightning-induced surges per IEC 61000-4-5 Level 4 |
| IFSM | 200 A (8.3 ms half-sine) - supports single-event surge handling without bond-wire fusing |
| TJmax | 175 °C - allows placement near heat-generating power stages without thermal shutdown risk |
| RθJL | 15.4 °C/W - enables effective heat transfer to PCB copper pour or heatsinked leads for sustained surge duty |
Pinout & Package
Package: Axial-leaded DO-201AD (Case Style 1.5KE), molded epoxy body with UL 94 V-0 rating; cathode indicated by color band on one end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to system ground or lower-potential node; conducts during forward surge events (e.g., reverse polarity misconnection) |
| Cathode | Avalanche clamping terminal | Connected to protected line (e.g., +24 V rail); initiates clamping when reverse voltage exceeds VBR |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable VBR tolerance (±5%), low leakage (<1 µA), and long-term reliability under thermal cycling |
| 1500 W peak pulse power | Meets IEC 61000-4-5 surge immunity requirements for industrial and automotive power inputs |
| Fast response time (≤1 ns) | Clamps transients before sensitive downstream components (e.g., MCU I/O, gate drivers) experience overstress |
| RoHS-compliant matte tin plating | Guarantees solderability per J-STD-002/JESD 22-B102 and whisker resistance per JESD 201 Class 1A |
| 175 °C operating junction temperature | Supports deployment in engine control units, motor drives, and outdoor telecom equipment without derating penalties |
Applications
| Automotive Power Input Protection | Industrial DC Bus Clamping |
|---|---|
|
Use Scenario: Protecting 24 V battery-fed ECUs from load dump (ISO 7637-2 Pulse 5a) and alternator overshoot. IC Role / Device Role / Timing Role: Unidirectional shunt clamp placed between battery rail and main DC/DC converter input. Use Value: Limits transient voltage to ≤274 V, preventing damage to 36 V-rated input capacitors and controller ICs. |
Use Scenario: Safeguarding VFD DC link capacitors and IGBT gate drivers against regeneration spikes. IC Role / Device Role / Timing Role: Mounted across DC+ and DC− rails to clamp switching-induced voltage spikes. Use Value: Absorbs 1500 W surges within 1 µs, maintaining DC bus stability and avoiding overvoltage trip faults. |
| Telecom Line Interface Protection | Consumer Appliance Power Supply Input |
|
Use Scenario: Shielding PoE-powered switch ports from induced lightning surges on Ethernet cables. IC Role / Device Role / Timing Role: Placed on primary side of isolated DC/DC converter feeding PHY ICs. Use Value: Clamps common-mode surges to <274 V while preserving signal integrity via low capacitance (<100 pF). |
Use Scenario: Securing AC-DC adapter outputs against mains-borne transients in washing machines and HVAC controllers. IC Role / Device Role / Timing Role: Connected between secondary-side +12 V rail and ground to protect microcontroller power pins. Use Value: Withstands repeated 1 kV/500 A surges per IEC 61000-4-4, extending product field life in noisy grid environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ200A | DO-214AA package; lower PPPM (600 W); VC = 324 V @ 1.85 A | Better suited for space-constrained PCBs; insufficient for 1500 W IEC 61000-4-5 Level 4 | Select only if board area is critical and surge threat level is limited to IEC 61000-4-4 (EFT) |
| 1.5KE200CA | Bidirectional variant; same VBR/PPPM; symmetric clamping in both polarities | Required for AC-coupled or floating signal lines (e.g., RS-485, CAN bus) where polarity reversal occurs | Choose 1.5KE200CA only when protecting bidirectional data lines or transformer-isolated circuits |
Compared with SMBJ200A and 1.5KE200CA, the 1.5KE200A-E3/51 provides optimal balance of high-power clamping, axial-leaded mechanical robustness, and cost-effective replacement for legacy 1.5KE designs - making it the preferred choice for fixed-polarity DC rail protection where PCB real estate and surge margin are prioritized over miniaturization or bidirectional symmetry.
Availability
1.5KE200A-E3/51 is available at Aetrix Electronics and suitable for automotive ECU power inputs, industrial motor drive DC buses, telecom line interfaces, and consumer appliance power supplies requiring stable component supply and full traceability.
Supply support for 1.5KE200A-E3/51 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, MOSFETs, and passive components for automotive, industrial, and computing markets.
The 1.5KE series was engineered specifically for high-energy transient suppression in harsh-environment power systems - delivering consistent 1500 W surge capability, AEC-Q101 qualification options, and long-term stability under thermal and electrical stress.
FAQ
What is the breakdown voltage tolerance for 1.5KE200A-E3/51?
The 1.5KE200A-E3/51 has a guaranteed breakdown voltage range of 190 V to 210 V at 1 mA test current, corresponding to a ±5 % tolerance. This tight VBR window ensures predictable clamping onset across production lots and temperature ranges, critical for compliance with ISO 7637-2 and IEC 61000-4-5 surge immunity testing protocols. The 1.5KE200A-E3/51 maintains this specification under all rated operating conditions.
Is 1.5KE200A-E3/51 RoHS compliant and lead-free?
Yes, the 1.5KE200A-E3/51 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 solderability standards and JESD 201 Class 1A whisker resistance requirements. No lead or other restricted substances exceed EU-mandated thresholds, and the molding compound is UL 94 V-0 rated. The 1.5KE200A-E3/51 is certified for commercial-grade use without exemptions.
Can 1.5KE200A-E3/51 be used in bidirectional signal protection?
No - the 1.5KE200A-E3/51 is strictly unidirectional and must not be used on AC-coupled or polarity-reversing lines. For bidirectional protection, select the 1.5KE200CA variant, which features symmetrical clamping in both directions. Using the 1.5KE200A-E3/51 on a bidirectional line would result in forward conduction during negative half-cycles, causing failure. The 1.5KE200A-E3/51 is intended only for fixed-polarity DC rails like +24 V or +48 V power inputs.
What is the maximum clamping voltage of 1.5KE200A-E3/51 under surge conditions?
The 1.5KE200A-E3/51 clamps to a maximum of 274 V when subjected to its rated peak pulse current of 5.5 A (10/1000 µs waveform). This VC value is measured at the device terminals and represents the upper limit of voltage imposed on protected circuitry during worst-case surge events. Designers must ensure downstream components have voltage ratings exceeding 274 V to guarantee survivability. The 1.5KE200A-E3/51 achieves this clamping with low incremental surge resistance.
Does 1.5KE200A-E3/51 require a heatsink for standard operation?
No external heatsink is required for single-pulse or low-duty-cycle surge events, as the 1.5KE200A-E3/51 relies on its 15.4 °C/W junction-to-lead thermal resistance and PCB copper pour for transient heat dissipation. However, for repetitive surges (>0.01% duty cycle) or ambient temperatures above 75 °C, thermal design must account for power derating per Figure 5 in the datasheet. The 1.5KE200A-E3/51 is rated for continuous 6.5 W dissipation only at TL = 75 °C with infinite heatsinking.
1.5KE200A-E3/51 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-201AA, DO-27, Axial
- Series:
- TransZorb®
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 171V
- Voltage - Breakdown (Min):
- 190V
- Voltage - Clamping (Max) @ Ipp:
- 274V
- Current - Peak Pulse (10/1000µs):
- 5.5A
- 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
1.5KE200A-E3/51 FAQ
1.How can I place an order for 1.5KE200A-E3/51 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE200A-E3/51 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 1.5KE200A-E3/51 reliable?
The price and inventory of 1.5KE200A-E3/51 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE200A-E3/51 is usually 5 days.
3.What payment methods are accepted for 1.5KE200A-E3/51?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE200A-E3/51 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE200A-E3/51?
1.5KE200A-E3/51 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE200A-E3/51 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 1.5KE200A-E3/51?
For technical support, including 1.5KE200A-E3/51 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE200A-E3/51 requirements.
6.How does Aetrix verify that 1.5KE200A-E3/51 is sourced from the original manufacturer or authorized distributors?
All 1.5KE200A-E3/51 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 1.5KE200A-E3/51 meets industry standards.
7.What is the process for return or replacement of 1.5KE200A-E3/51?
All 1.5KE200A-E3/51 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE200A-E3/51, 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 1.5KE200A-E3/51 part is unused and in its original packaging.
Return procedure for 1.5KE200A-E3/51:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE200A-E3/51 Tags
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