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Vishay General Semiconductor - Diodes Division 1.5KE8.2CA/54
- Part No.:
- 1.5KE8.2CA/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE8.2CA/54.pdf
- Description:
- TVS DIODE 7.02VWM 12.1VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:3,360
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Product details
Overview
1.5KE8.2CA/54 from Vishay General Semiconductor is a bidirectional Transient Voltage Suppressor (TVS) diode designed for robust overvoltage protection in power and signal lines. It features a 8.2 V breakdown voltage (VBR), 7.02 V stand-off voltage (VWM), 1500 W peak pulse power (10/1000 µs), clamping voltage of 12.1 V at 200 A, and operates across –55 °C to +175 °C junction temperature. It protects MOSFETs, ICs, and sensor interfaces against lightning-induced transients and inductive switching surges.
For engineers reviewing the 1.5KE8.2CA/54 datasheet, 1.5KE8.2CA/54 pinout, 1.5KE8.2CA/54 application, or 1.5KE8.2CA/54 equivalent, this device is evaluated for fast-response (<1 ns), high-energy transient suppression in automotive, industrial, and telecom power rails where bidirectional clamping and AEC-Q101 qualification (in HE3 variants) are critical selection criteria.
Technical Context
The 1.5KE8.2CA/54 implements a glass-passivated silicon junction optimized for bidirectional surge conduction without polarity marking. Its clamping action responds within <1 ns, delivering low incremental surge resistance and stable thermal performance up to 175 °C junction temperature.
It sustains 1500 W peak pulse power under standardized 10/1000 µs waveform with 0.01 % duty cycle, and exhibits 0.065 %/°C temperature coefficient of VBR, ensuring predictable voltage threshold drift across operating temperature ranges.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 7.79 V / 8.61 V - defines guaranteed clamping onset range at 10 mA test current |
| VWM | 7.02 V - maximum continuous reverse working voltage before leakage exceeds 200 µA |
| VC @ IPPM | 12.1 V at 200 A - clamped voltage during full 1500 W transient, limiting downstream stress |
| PPPM | 1500 W - peak surge energy absorption capability per 10/1000 µs pulse, enabling single-event lightning strike handling |
| TJ max | +175 °C - extended thermal rating supports under-hood automotive and high-ambient industrial use |
| Package | Case Style 1.5KE - axial-leaded DO-201AD package with UL 94 V-0 molded epoxy body |
| RθJA | 75 °C/W - thermal resistance from junction to ambient, guiding heatsinking requirements for repetitive surge scenarios |
Pinout & Package
1.5KE8.2CA/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 solderable per J-STD-002 and JESD 22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (unmarked) | Bidirectional terminal pair | Identical conduction behavior in both directions; no cathode band - simplifies PCB layout and eliminates orientation error |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Enables stable long-term reliability and low leakage (<200 µA at VWM) across temperature and humidity stress |
| 1500 W peak pulse power (10/1000 µs) | Supports IEC 61000-4-5 Level 4 surge immunity (4 kV line-to-earth) without external derating |
| Clamping response time <1 ns | Protects nanosecond-scale logic and high-speed interface ICs before damaging voltage overshoot occurs |
| AEC-Q101 qualified option (HE3 suffix) | Validated for automotive powertrain and body electronics where qualification traceability is mandatory |
| UL 94 V-0 flammability rating | Mold compound meets safety-critical fire resistance standards for enclosed industrial and telecom equipment |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Suppressing load-dump and jump-start transients on 12 V battery-fed ECUs and lighting modules. IC Role / Device Role / Timing Role: Bidirectional TVS placed across input rail to clamp positive and negative spikes before they reach DC-DC converters and microcontrollers. Use Value: Limits rail voltage to ≤12.1 V during 200 A surge events, preventing latch-up or gate oxide damage in downstream 3.3 V/5 V logic. | Use Scenario: Shielding analog sensor outputs (e.g., pressure, temperature) from ESD and cable discharge events in factory automation systems. IC Role / Device Role / Timing Role: Low-capacitance TVS connected between signal line and ground to shunt fast transients while preserving signal integrity. Use Value: Clamps ±15 kV contact ESD (IEC 61000-4-2) within <1 ns, maintaining sub-1% gain error in precision 24-bit ADC front-ends. |
| Telecom Line Surge Protection | Consumer Power Adapter Input Stage |
Use Scenario: Protecting DSL/POE line cards from induced lightning surges on outdoor copper pairs. IC Role / Device Role / Timing Role: Primary-level TVS on line-side transformer secondary, coordinated with gas discharge tubes (GDTs) for staged protection. Use Value: Absorbs up to 1500 W of coupled lightning energy (10/1000 µs), reducing let-through voltage to safe levels for downstream Si transceivers. | Use Scenario: Safeguarding AC-DC adapter primary-side rectifiers and controllers against mains-borne surges (IEC 61000-4-5). IC Role / Device Role / Timing Role: Secondary-side TVS across bulk capacitor to suppress reflected transients and rectifier reverse recovery spikes. Use Value: Prevents overvoltage failure of 600 V MOSFETs and optocouplers by clamping to 12.1 V before 100 ns, meeting UL 62368-1 transient withstand 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 |
|---|---|---|---|
| SMBJ8.0CA | Lower PPPM (600 W), smaller SMB package, higher VC (12.8 V at 49.2 A) | Targeted for space-constrained PCBs with lower surge exposure (e.g., USB ports, low-power sensors) | Select when board area is limited and peak surge energy does not exceed 600 W |
| 1.5KE8.2C | Same electrical specs and DO-201AD package; differs only in packaging format (bulk vs. tape-and-reel /54) | No functional difference - identical performance and mounting | Choose 1.5KE8.2C for manual prototyping or small-batch assembly; 1.5KE8.2CA/54 for automated SMT line compatibility |
Compared with SMBJ8.0CA and 1.5KE8.2C, the 1.5KE8.2CA/54 delivers 2.5× higher surge power handling in the same axial footprint, making it optimal for high-reliability industrial and automotive power rails where 1500 W event immunity is non-negotiable.
Availability
1.5KE8.2CA/54 is available at Aetrix Electronics and suitable for automotive power distribution, industrial sensor conditioning, and telecom line card designs requiring stable component supply, long-lifecycle support, and RoHS-compliant sourcing.
Supply support for 1.5KE8.2CA/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 qualification.
The 1.5KE series was engineered specifically for high-energy transient suppression in harsh environments - targeting applications where sustained 1500 W surge immunity, wide temperature operation, and bidirectional clamping are essential design requirements.
FAQ
What is the breakdown voltage tolerance of the 1.5KE8.2CA/54?
The 1.5KE8.2CA/54 has a specified breakdown voltage (VBR) range of 7.79 V to 8.61 V at 10 mA test current, representing ±5.0 % tolerance around the nominal 8.2 V rating. This tight VBR window ensures consistent clamping onset across production lots and enables precise coordination with downstream overvoltage protection thresholds in systems using the 1.5KE8.2CA/54.
Is the 1.5KE8.2CA/54 suitable for automotive applications?
Yes - the 1.5KE8.2CA/54 is offered in an AEC-Q101 qualified variant (e.g., 1.5KE8.2CAHE3_B), validated for automotive powertrain and body electronics. While the /54 suffix denotes tape-and-reel packaging, the underlying 1.5KE8.2CA device meets AEC-Q101 stress testing requirements including temperature cycling, HTRB, and ESD, making it appropriate for under-hood and chassis-mounted systems where the 1.5KE8.2CA/54 is deployed.
How does the 1.5KE8.2CA/54 differ from unidirectional 1.5KE8.2A variants?
The 1.5KE8.2CA/54 is bidirectional with symmetrical clamping in both polarities and no cathode marking, whereas the 1.5KE8.2A is unidirectional with a cathode band and conducts only in reverse bias. The 1.5KE8.2CA/54 provides protection against both positive and negative transients on AC-coupled or floating lines, while the 1.5KE8.2A is used on DC rails with defined polarity - a fundamental functional distinction that determines placement and circuit topology when applying the 1.5KE8.2CA/54.
What is the maximum clamping voltage of the 1.5KE8.2CA/54 during a surge event?
The maximum clamping voltage (VC) of the 1.5KE8.2CA/54 is 12.1 V at its rated peak pulse current (IPPM) of 200 A under the standard 10/1000 µs waveform. This value is guaranteed across temperature and represents the upper limit of voltage seen by protected circuitry during worst-case surge conditions, directly informing system-level overvoltage margin calculations for the 1.5KE8.2CA/54.
Does the 1.5KE8.2CA/54 require heatsinking in typical applications?
No - the 1.5KE8.2CA/54 is designed for transient-only duty (0.01 % duty cycle) and does not require heatsinking for single-event surge suppression. Its RθJA of 75 °C/W applies to steady-state dissipation, but since average power remains negligible during infrequent transients, PCB copper area alone suffices. Heatsinking becomes relevant only in rare cases involving repetitive surges above 1 Hz, where thermal modeling of the 1.5KE8.2CA/54's junction temperature rise is advised.
1.5KE8.2CA/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):
- 7.02V
- Voltage - Breakdown (Min):
- 7.79V
- Voltage - Clamping (Max) @ Ipp:
- 12.1V
- Current - Peak Pulse (10/1000µs):
- 124A
- 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
1.5KE8.2CA/54 FAQ
1.How can I place an order for 1.5KE8.2CA/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE8.2CA/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 1.5KE8.2CA/54 reliable?
The price and inventory of 1.5KE8.2CA/54 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE8.2CA/54 is usually 5 days.
3.What payment methods are accepted for 1.5KE8.2CA/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE8.2CA/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE8.2CA/54?
1.5KE8.2CA/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE8.2CA/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 1.5KE8.2CA/54?
For technical support, including 1.5KE8.2CA/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE8.2CA/54 requirements.
6.How does Aetrix verify that 1.5KE8.2CA/54 is sourced from the original manufacturer or authorized distributors?
All 1.5KE8.2CA/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 1.5KE8.2CA/54 meets industry standards.
7.What is the process for return or replacement of 1.5KE8.2CA/54?
All 1.5KE8.2CA/54 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE8.2CA/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 1.5KE8.2CA/54 part is unused and in its original packaging.
Return procedure for 1.5KE8.2CA/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE8.2CA/54 Tags
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