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Vishay General Semiconductor - Diodes Division 1.5KE8.2CA-E3/51
- Part No.:
- 1.5KE8.2CA-E3/51
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE8.2CA-E3/51.pdf
- Description:
- TVS DIODE 7.02VWM 12.1VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:9,730
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Product details
Overview
1.5KE8.2CA-E3/51 from Vishay General Semiconductor is a bidirectional Transient Voltage Suppressor (TVS) diode designed for clamping voltage transients on signal and power lines. It features a 6.8 V to 8.61 V breakdown voltage range at 10 mA test current, 7.02 V maximum stand-off voltage, 12.1 V clamping voltage at 124 A peak pulse current, and 1500 W peak pulse power capability with 10/1000 µs waveform - used in automotive sensor protection and industrial I/O interface surge suppression.
For engineers reviewing the 1.5KE8.2CA-E3/51 datasheet, 1.5KE8.2CA-E3/51 pinout, 1.5KE8.2CA-E3/51 application, or 1.5KE8.2CA-E3/51 equivalent, key selection criteria include bidirectional clamping symmetry, low clamping ratio (VC/VWM ≈ 1.72), JEDEC 1.5KE package compatibility, and compliance with UL 497B for telecom and industrial protectors.
Technical Context
This device operates as a silicon avalanche diode with glass-passivated junction, delivering symmetrical clamping in both polarities. Its 10/1000 µs waveform response enables protection against inductive switching spikes and lightning-induced surges up to 124 A peak pulse current while maintaining ≤12.1 V clamping across the full rated current range.
Thermal performance is defined by 15.4 °C/W junction-to-lead resistance and 75 °C/W junction-to-ambient resistance, supporting operation from –55 °C to +175 °C. The E3 suffix confirms RoHS compliance and JESD 201 Class 1A whisker resistance, with matte tin-plated leads solderable per J-STD-002.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Breakdown Voltage VBR | 7.79 V min to 8.61 V max at 10 mA - defines precise conduction onset threshold for transient clamping |
| Stand-off Voltage VWM | 7.02 V max - ensures no conduction during normal 5 V–7 V system operation |
| Clamping Voltage VC | 12.1 V at 124 A IPPM - limits downstream voltage stress during worst-case surge events |
| Peak Pulse Power PPPM | 1500 W (10/1000 µs) - sustains high-energy transients without failure |
| Operating Temperature | –55 °C to +175 °C - supports under-hood automotive and industrial ambient conditions |
| Leakage Current ID | <200 µA at VWM - minimizes standby power loss in battery-powered systems |
| Package | JEDEC 1.5KE case - industry-standard axial leaded TO-218 compatible footprint |
Pinout & Package
Package: JEDEC 1.5KE molded epoxy case with matte tin-plated axial leads; UL 94 V-0 rated; 0.375" (9.5 mm) lead length standard; no polarity marking for bidirectional configuration.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (negative polarity) | Conducts during negative-going surges; symmetrically identical to cathode in bidirectional mode |
| Cathode | Transient current entry (positive polarity) | Conducts during positive-going surges; electrically interchangeable with anode due to CA symmetry |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping symmetry | Identical VBR, VC, and IPPM in both directions - eliminates need for polarity-aware PCB layout |
| Glass-passivated junction | Stable avalanche characteristics over temperature and lifetime - ensures consistent clamping after 1000+ surge events |
| 1500 W peak pulse rating | Withstands 10/1000 µs surges up to 124 A - exceeds IEC 61000-4-5 Level 4 requirements for industrial ports |
| Low clamping ratio | VC/VWM = 1.72 - provides tighter voltage limiting than typical MOVs or polymer-based protectors |
| RoHS-compliant E3 suffix | JESD 201 Class 1A whisker resistance - qualified for high-reliability automated assembly and long-term storage |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Ports |
|---|---|
Use Scenario: Protecting CAN/LIN bus nodes and analog sensor inputs (e.g., pressure, temperature) from load dump and ESD events in engine control units. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed directly at connector entry point before signal conditioning circuitry. Use Value: Limits transient voltage to ≤12.1 V during 124 A surges, preventing latch-up or gate oxide damage in downstream op-amps and microcontrollers. | Use Scenario: Safeguarding 24 V DC digital input modules against field-wiring induced surges and relay coil flyback in factory automation cabinets. IC Role / Device Role / Timing Role: Primary surge suppression element mounted on front-panel terminal blocks with direct trace routing to ground plane. Use Value: Clamps 10/1000 µs transients within 1 ns, preserving signal integrity of 10 kHz–1 MHz digital inputs without adding capacitance-induced timing skew. |
| Telecom Line Interface | Consumer Appliance Motor Control |
Use Scenario: Shielding RS-485 transceivers and Ethernet PHYs from lightning-induced surges on outdoor cabling in security and building management systems. IC Role / Device Role / Timing Role: First-stage protector in multi-tiered defense, coordinated with GDT and series impedance upstream. Use Value: Provides sub-13 V clamping at full 1500 W rating - maintains compliance with UL 497B Category A/B requirements for telecom protectors. | Use Scenario: Suppressing commutation spikes from universal motor brushes and triac-driven fans in washing machines and HVAC controllers. IC Role / Device Role / Timing Role: Across-the-line TVS connected between AC line and neutral near motor driver ICs. Use Value: Handles repetitive 100 A+ flyback currents without degradation, extending life of opto-triacs and zero-crossing detectors. |
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 (surface-mount), higher VBR tolerance (6.4–9.1 V) | Preferred for space-constrained PCBs where 1500 W rating is not required | Select when board area is limited and peak surge energy is ≤600 W |
| 1.5KE8.2C | Same electrical specs but lacks E3 RoHS/whisker qualification; commercial-grade only | Acceptable for non-automotive, non-industrial consumer designs with relaxed reliability requirements | Choose only if JESD 201 Class 1A and UL 497B recognition are not mandated |
Compared with 1.5KE8.2CA-E3/51, SMBJ8.0CA trades peak power and through-hole robustness for compactness, while 1.5KE8.2C retains identical clamping performance but omits automotive-grade process controls and certification - making the E3/51 version optimal for mission-critical industrial and automotive deployments.
Availability
1.5KE8.2CA-E3/51 is available at Aetrix Electronics and suitable for automotive sensor protection, industrial PLC I/O ports, telecom line interfaces, and consumer appliance motor control requiring stable component supply and long-term lifecycle support.
Supply support for 1.5KE8.2CA-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 diodes, rectifiers, MOSFETs, and protection devices with emphasis on reliability and application-specific optimization.
The 1.5KE family was engineered for high-energy transient suppression in harsh environments, targeting automotive, industrial, and telecom infrastructure where sustained 1500 W surge handling and AEC-Q101 readiness are critical.
FAQ
What is the clamping voltage of the 1.5KE8.2CA-E3/51 at its rated peak pulse current?
The 1.5KE8.2CA-E3/51 exhibits a maximum clamping voltage (VC) of 12.1 V at its rated peak pulse current (IPPM) of 124 A, measured using the standardized 10/1000 µs waveform. This value is guaranteed across the full operating temperature range and defines the upper voltage limit imposed on protected circuits during surge events. The 1.5KE8.2CA-E3/51 achieves this with a low incremental surge resistance that stabilizes clamping performance under repeated stress.
Is the 1.5KE8.2CA-E3/51 suitable for automotive applications?
Yes, the 1.5KE8.2CA-E3/51 is qualified to AEC-Q101 when ordered with the HE3 suffix (e.g., 1.5KE8.2CAHE3_B), but the E3/51 variant is RoHS-compliant commercial grade. While it shares identical electrical specs and thermal robustness (–55 °C to +175 °C), the E3/51 lacks formal AEC-Q101 validation. For automotive use, confirm qualification status via Vishay's ordering code matrix - the 1.5KE8.2CA-E3/51 remains widely deployed in non-safety-critical automotive subsystems.
How does the bidirectional design of the 1.5KE8.2CA-E3/51 affect PCB layout?
The 1.5KE8.2CA-E3/51 has no polarity marking and identical electrical behavior in both directions, eliminating orientation constraints during placement. This simplifies PCB layout by removing the need for silkscreen polarity indicators or directional routing - especially beneficial in differential interfaces like RS-485 or CAN where symmetric protection is required. The 1.5KE8.2CA-E3/51 can be rotated 180° without functional impact, reducing assembly errors and enabling automated optical inspection tolerance.
What is the maximum leakage current of the 1.5KE8.2CA-E3/51 at its stand-off voltage?
The 1.5KE8.2CA-E3/51 specifies a maximum reverse leakage current (ID) of 200 µA at its rated stand-off voltage (VWM) of 7.02 V, tested at 25 °C. This low leakage ensures minimal power drain in always-on systems such as battery-backed sensors or IoT edge nodes. Leakage remains below 500 µA up to +125 °C, preserving efficiency in thermally demanding enclosures - a key advantage of the 1.5KE8.2CA-E3/51 over higher-leakage polymer TVS alternatives.
Can the 1.5KE8.2CA-E3/51 be used in parallel to increase surge handling capacity?
Yes, the 1.5KE8.2CA-E3/51 may be paralleled to increase total peak pulse power dissipation, but only with strict matching of VBR (±2 %) and thermal coupling to ensure current sharing. Mismatched units risk current hogging and premature failure. Vishay recommends using a single 1.5KE8.2CA-E3/51 for most applications up to 1500 W; for higher energy, consider larger-package variants like 3KP8.2CA rather than parallel 1.5KE8.2CA-E3/51 units.
1.5KE8.2CA-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:
- -
- 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-E3/51 FAQ
1.How can I place an order for 1.5KE8.2CA-E3/51 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE8.2CA-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 1.5KE8.2CA-E3/51 reliable?
The price and inventory of 1.5KE8.2CA-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 1.5KE8.2CA-E3/51 is usually 5 days.
3.What payment methods are accepted for 1.5KE8.2CA-E3/51?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE8.2CA-E3/51 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE8.2CA-E3/51?
1.5KE8.2CA-E3/51 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE8.2CA-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 1.5KE8.2CA-E3/51?
For technical support, including 1.5KE8.2CA-E3/51 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE8.2CA-E3/51 requirements.
6.How does Aetrix verify that 1.5KE8.2CA-E3/51 is sourced from the original manufacturer or authorized distributors?
All 1.5KE8.2CA-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 1.5KE8.2CA-E3/51 meets industry standards.
7.What is the process for return or replacement of 1.5KE8.2CA-E3/51?
All 1.5KE8.2CA-E3/51 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE8.2CA-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 1.5KE8.2CA-E3/51 part is unused and in its original packaging.
Return procedure for 1.5KE8.2CA-E3/51:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE8.2CA-E3/51 Tags
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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