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Vishay General Semiconductor - Diodes Division 1.5KE200A/54
- Part No.:
- 1.5KE200A/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE200A/54.pdf
- Description:
- TVS DIODE 171VWM 274VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:3,074
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Product details
Overview
1.5KE200A 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 standoff voltage (VWM), 210 V maximum breakdown voltage (VBR), 274 V clamping voltage at 5.5 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 automotive power supply input stages and industrial DC bus protection.
For engineers reviewing the 1.5KE200A datasheet, 1.5KE200A pinout, 1.5KE200A application, or 1.5KE200A equivalent, key selection criteria include verified clamping performance under 10/1000 µs surge, unidirectional polarity with cathode band marking, JEDEC 1.5KE package thermal resistance (RθJL = 15.4 °C/W), and compatibility with AEC-Q101-qualified designs when specified with HE3 suffix.
Technical Context
This device functions as a silicon avalanche diode operating in reverse-biased breakdown mode during transient events, delivering fast clamping response (<1 ns) and low incremental surge resistance. Its glass-passivated junction ensures stable VBR tolerance (±5%) and robust surge handling up to 200 A IFSM (8.3 ms half-sine).
The 1.5KE200A is rated for 1500 W peak pulse power at TA = 25 °C, derated linearly above 25 °C per Fig. 2, with thermal resistance from junction to lead (RθJL) of 15.4 °C/W enabling effective heat transfer to PCB copper or heatsinked leads.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 171 V - maximum continuous reverse working voltage before clamping initiates |
| VBR (min/max) | 190 V / 210 V at 1 mA - guaranteed breakdown threshold defining protection onset precision |
| VC @ IPPM | 274 V at 5.5 A - clamped voltage during full-rated 10/1000 µs surge, limiting downstream stress |
| PPPM | 1500 W - peak transient energy absorption capability per single 10/1000 µs pulse |
| IFSM | 200 A - non-repetitive forward surge current rating (8.3 ms half-sine), critical for input rectifier stage coordination |
| TJ max. | +175 °C - maximum junction temperature enabling operation in under-hood automotive or high-ambient industrial environments |
| RθJL | 15.4 °C/W - thermal resistance from junction to lead, guiding PCB copper pour and lead soldering design |
Pinout & Package
Package: JEDEC DO-201AD (Case Style 1.5KE), axial-leaded, molded epoxy body with matte tin-plated leads compliant to J-STD-002 and JESD 22-B102. Cathode indicated by color band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential side in unidirectional configuration; carries full surge current during forward conduction events |
| Cathode | Reverse-biased clamping terminal | Marked with color band; connected to protected line; avalanche breakdown occurs here during overvoltage transients |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Ensures stable VBR over lifetime and humidity resistance per MIL-STD-750 Method 1082 |
| 1500 W peak pulse power (10/1000 µs) | Supports IEC 61000-4-5 Level 4 (4 kV) surge immunity when properly laid out with low-inductance paths |
| Clamping ratio VC/VBR ≈ 1.30 | Indicates tight voltage control - 274 V clamp at 210 V VBR enables margin-safe IC interface protection |
| AEC-Q101 qualification option (HE3 suffix) | Validated for automotive powertrain and body electronics per stress test requirements including HTGB, HTRB, and TCT |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (e.g., ISO 7637-2 pulse 1/2a/5a), improving system-level robustness |
Applications
| Automotive Power Input Protection | Industrial DC Bus Surge Suppression |
|---|---|
Use Scenario: Protecting 24 V vehicle battery-fed ECUs against load dump (ISO 16750-2) and alternator switching transients. IC Role / Device Role / Timing Role: Primary clamping element placed directly across input terminals, absorbing >100 J surges within nanoseconds. Use Value: Limits rail voltage to ≤274 V during 120 V/350 ms load dump, preventing damage to downstream DC-DC controllers and microcontrollers. | Use Scenario: Safeguarding PLC power supplies and motor drive front-ends from inductive kickback and lightning-induced surges on 48–72 V DC distribution buses. IC Role / Device Role / Timing Role: Standoff-rated TVS in parallel with bulk capacitance, clamping transients before they propagate into regulation circuitry. Use Value: Withstands repetitive 10/1000 µs surges up to 1500 W without degradation, ensuring long-term reliability in factory automation environments. |
| Telecom Line Interface Protection | Consumer Power Adapter Input Stage |
Use Scenario: Shielding PoE-powered switch ports and base station RF module power inputs from induced surges on outdoor cabling. IC Role / Device Role / Timing Role: Unidirectional TVS on DC feed line, coordinated with upstream fuse and common-mode chokes. Use Value: Sub-1 ns response time prevents latch-up in Ethernet PHYs and maintains IEEE 802.3af/at compliance under surge stress. | Use Scenario: Secondary-side overvoltage suppression in universal-input AC/DC adapters after bridge rectification. IC Role / Device Role / Timing Role: Clamping component across bulk capacitor, activated only during abnormal line surges or rectifier failure modes. Use Value: 171 V VWM allows safe operation at 325 VDC peak from 230 VAC mains while clamping fault conditions to 274 V - protecting optocouplers and PWM controllers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ200A | DO-214AA package, lower PPPM (600 W), higher RθJA (110 °C/W), same VWM/VBR range | Surface-mount alternative for space-constrained PCBs; unsuitable for 1500 W surge duty without parallel devices | Select SMBJ200A only when board area is limited and peak surge energy is ≤600 W; verify thermal relief pad design for sustained dissipation. |
| 1.5KE200CA | Bidirectional variant (VWM = 171 V, VBR = 190–210 V), identical package and PPPM, no polarity marking | Required for AC-coupled or floating signal line protection where bidirectional clamping is mandated (e.g., RS-485, CAN bus) | Choose 1.5KE200CA only when protecting symmetric differential signals or AC rails; unidirectional 1.5KE200A remains optimal for DC power rails with defined ground reference. |
Compared with SMBJ200A and 1.5KE200CA, the 1.5KE200A provides superior thermal performance (RθJL = 15.4 °C/W vs. ~30 °C/W for SMBJ) and precise unidirectional clamping essential for DC power rail protection - making it the preferred choice for high-energy, high-reliability automotive and industrial primary-side applications.
Availability
1.5KE200A is available at Aetrix Electronics and suitable for automotive ECU power inputs, industrial DC bus protection, telecom line interfaces, and consumer power adapter secondary-side surge suppression requiring stable component supply and long-lifecycle support.
Supply support for 1.5KE200A 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, power handling, and automotive-grade qualification.
The 1.5KE series was engineered for high-energy transient suppression in harsh environments, targeting automotive, industrial, and telecom infrastructure where robustness against lightning, load dump, and inductive switching is mission-critical.
FAQ
What is the maximum clamping voltage of the 1.5KE200A under standard test conditions?
The 1.5KE200A exhibits a maximum clamping voltage (VC) of 274 V at 5.5 A peak pulse current (IPPM) using the 10/1000 µs waveform per JEDEC standards. This value is measured at TA = 25 °C and defines the upper voltage limit imposed on protected circuits during worst-case surge events. The 1.5KE200A's clamping performance remains stable across its operating temperature range due to its low temperature coefficient of VBR (0.108 %/°C).
Does the 1.5KE200A meet automotive qualification requirements?
The base 1.5KE200A is commercial-grade; however, the 1.5KE200AHE3 variant is AEC-Q101 qualified for automotive applications. This version undergoes stress testing including high-temperature reverse bias (HTRB), high-temperature gate bias (HTGB), and temperature cycling (TCT) per AEC-Q101 Rev D. The 1.5KE200AHE3 is suitable for engine control units, body electronics, and ADAS power supplies where automotive reliability is mandatory.
How does the 1.5KE200A differ from the 1.5KE200CA?
The 1.5KE200A is unidirectional with cathode band marking and optimized for DC rail protection, while the 1.5KE200CA is bidirectional with no polarity marking and intended for AC or floating signal lines. Both share identical VWM (171 V), VBR (190–210 V), PPPM (1500 W), and package (DO-201AD), but their IV characteristics differ: the 1.5KE200CA clamps in both directions, whereas the 1.5KE200A conducts only in reverse bias. Selecting the wrong polarity type may result in improper protection or forward conduction failure.
What is the thermal resistance from junction to ambient for the 1.5KE200A?
The 1.5KE200A has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W under standard PCB mounting conditions (1 in² copper pad, 2 oz Cu). However, its junction-to-lead resistance (RθJL) is 15.4 °C/W - a more relevant metric for axial-leaded devices, indicating efficient heat transfer through the leads to external copper pours or heatsinks. For reliable operation at elevated ambient temperatures, PCB layout must maximize copper area connected to both leads.
Can the 1.5KE200A be used in parallel to increase surge handling capacity?
Yes, multiple 1.5KE200A devices can be paralleled to increase total peak pulse power handling, but strict matching of VBR (within ±3%) and symmetrical PCB layout (equal trace inductance/resistance) are required to ensure current sharing. Mismatched units risk thermal runaway, as the lowest-VBR device conducts first and absorbs disproportionate energy. Parallel use is uncommon in practice; selecting a higher-power TVS (e.g., 3KP200A) is preferred for >1500 W requirements.
1.5KE200A/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):
- 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/54 FAQ
1.How can I place an order for 1.5KE200A/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE200A/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 1.5KE200A/54 reliable?
The price and inventory of 1.5KE200A/54 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE200A/54 is usually 5 days.
3.What payment methods are accepted for 1.5KE200A/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE200A/54 transactions.
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1.5KE200A/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE200A/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 1.5KE200A/54?
For technical support, including 1.5KE200A/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE200A/54 requirements.
6.How does Aetrix verify that 1.5KE200A/54 is sourced from the original manufacturer or authorized distributors?
All 1.5KE200A/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 1.5KE200A/54 meets industry standards.
7.What is the process for return or replacement of 1.5KE200A/54?
All 1.5KE200A/54 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE200A/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 1.5KE200A/54 part is unused and in its original packaging.
Return procedure for 1.5KE200A/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE200A/54 Tags
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ESD9B5.0ST5G
onsemi
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DESD3V3E1BL-7B
Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Nexperia USA Inc.
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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