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Vishay General Semiconductor - Diodes Division 1.5KE82CAHE3/51
- Part No.:
- 1.5KE82CAHE3/51
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE82CAHE3/51.pdf
- Description:
- TVS DIODE 70.1VWM 113VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:9,260
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Product details
Overview
1.5KE82CAHE3/51 from Vishay General Semiconductor is a bi-directional Transient Voltage Suppressor (TVS) diode designed for robust overvoltage protection in power and signal lines. It features a 77.9 V to 86.1 V breakdown voltage (VBR) at 1 mA, 70.1 V maximum stand-off voltage (VWM), 113 V clamping voltage (VC) at 13.3 A peak pulse current, and 1500 W peak pulse power rating with 10/1000 µs waveform - deployed in automotive sensor interfaces and industrial I/O protection circuits.
For engineers reviewing the 1.5KE82CAHE3/51 datasheet, 1.5KE82CAHE3/51 pinout, 1.5KE82CAHE3/51 application, or 1.5KE82CAHE3/51 equivalent, this device serves as a RoHS-compliant, AEC-Q101-qualified bi-directional TVS for high-energy transient suppression where fast response (<1 ns), low clamping ratio, and stable junction temperature up to +175 °C are required.
Technical Context
The 1.5KE82CAHE3/51 operates as a bi-directional avalanche diode, leveraging glass-passivated silicon junction technology to deliver symmetrical clamping in both polarities. Its electrical characteristics - including VBR, VC, and IPPM - are specified and validated for both forward and reverse directions per JEDEC standards.
It is rated for 1500 W non-repetitive peak pulse power (10/1000 µs), exhibits 0.105 %/°C temperature coefficient of VBR, and maintains ≤1.0 µA reverse leakage at VWM. Thermal resistance is 15.4 °C/W (junction-to-lead), enabling reliable operation under surge conditions without external heatsinking in standard PCB layouts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 77.9 V / 86.1 V at 1 mA - defines precise avalanche initiation threshold for bi-directional clamping |
| VWM | 70.1 V - maximum continuous working voltage before leakage exceeds 1.0 µA |
| VC @ IPPM | 113 V at 13.3 A - clamped voltage during 1500 W transient, limiting downstream stress |
| PPPM | 1500 W (10/1000 µs) - peak surge energy handling capacity for lightning/inductive switching events |
| TJ max. | +175 °C - enables use in under-hood automotive and high-ambient industrial environments |
| AEC-Q101 Qualified | Yes - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD |
| Package | Case Style 1.5KE (DO-201AD) - axial-leaded, epoxy-molded, UL 94 V-0 compliant body |
Pinout & Package
1.5KE82CAHE3/51 uses the DO-201AD (Case Style 1.5KE) axial package: molded epoxy body, matte tin-plated leads, no polarity marking (bi-directional). Leads are solderable per J-STD-002/JESD 22-B102; whisker-tested to JESD 201 Class 2 (HE3 suffix).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bi-directional avalanche junction terminals | No functional distinction - interchangeable connection; clamps transients regardless of polarity |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable VBR tolerance and long-term reliability under thermal cycling and humidity |
| 1500 W peak pulse power (10/1000 µs) | Withstands high-energy surges from inductive load switching or lightning-induced transients |
| Clamping response time < 1 ns | Protects sensitive ICs (e.g., CAN transceivers, ADC inputs) before damage occurs |
| AEC-Q101 qualification | Validated for automotive applications including engine control units and body electronics |
| RoHS-compliant HE3 suffix | Meets JESD 201 Class 2 whisker resistance and UL 94 V-0 flammability requirements |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting analog sensor outputs (e.g., pressure, temperature) in engine control modules from load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Bi-directional voltage clamp placed across sensor supply line and ground to shunt transients before reaching precision amplifier or MCU ADC input. Use Value: Maintains signal integrity by limiting clamped voltage to 113 V while surviving 1500 W surges - critical for ASIL-B system compliance. |
Use Scenario: Safeguarding digital input channels on programmable logic controllers exposed to relay coil flyback and EFT bursts in factory automation. IC Role / Device Role / Timing Role: Standoff protection device mounted at connector entry point, absorbing 10/1000 µs surges before they reach optocoupler or level-shifter circuitry. Use Value: Enables >100,000 surge cycles without degradation due to low incremental surge resistance and 175 °C junction rating. |
| Telecom Line Interface | Consumer Power Adapter Input |
Use Scenario: Secondary-side transient suppression on Ethernet PHY power rails and RS-485 bus lines in network equipment. IC Role / Device Role / Timing Role: Fast-acting bi-directional clamp parallel to DC-DC converter input, preventing latch-up or burnout in PMICs during ESD or surge events. Use Value: Symmetrical clamping ensures protection against both positive and negative transients common in unshielded data line coupling. |
Use Scenario: Input-stage overvoltage protection in AC-DC adapters for smart home devices subjected to mains-borne surges per IEC 61000-4-5. IC Role / Device Role / Timing Role: Primary transient suppressor located after bridge rectifier but before bulk capacitor, clamping line-to-line and line-to-ground spikes. Use Value: 70.1 V VWM allows compatibility with 60 V-rated input capacitors while delivering 113 V clamping - minimizing component stress margin. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ85CA | Lower PPPM (600 W), smaller SMB package (surface-mount), VC = 125 V @ 4.8 A | Better suited for space-constrained PCBs; lower energy handling limits use in high-surge industrial zones | Select when board area is critical and surge threat level is ≤600 W (e.g., consumer USB ports) |
| 1.5KE82C | Same 1.5KE package and electrical specs, but lacks HE3 suffix - not AEC-Q101 qualified or JESD 201 Class 2 whisker tested | Restricted to commercial-grade applications; unsuitable for automotive or long-lifecycle industrial deployments | Choose only for cost-sensitive, non-automotive designs where qualification documentation is not required |
Compared with 1.5KE82CAHE3/51, SMBJ85CA trades surge capacity and ruggedness for compactness, while 1.5KE82C omits automotive qualification and enhanced plating - making 1.5KE82CAHE3/51 the sole option meeting AEC-Q101, UL 94 V-0, and JESD 201 Class 2 requirements in the 1.5KE form factor.
Availability
1.5KE82CAHE3/51 is available at Aetrix Electronics and suitable for automotive sensor protection, industrial PLC I/O hardening, and telecom line interface applications requiring stable component supply, long-term lifecycle support, and traceable AEC-Q101 compliance.
Supply support for 1.5KE82CAHE3/51 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 demanding industrial and automotive applications.
The 1.5KE series was engineered specifically for high-energy transient suppression in harsh environments - targeting automotive powertrain systems, industrial motor drives, and infrastructure equipment where failure modes must be mitigated without adding complexity.
FAQ
What is the clamping voltage of the 1.5KE82CAHE3/51 under maximum surge conditions?
The 1.5KE82CAHE3/51 clamps to 113 V at its rated peak pulse current of 13.3 A (10/1000 µs waveform). This value is measured per JEDEC standard test conditions and represents the maximum voltage seen downstream during a full 1500 W transient event. The clamping ratio (VC/VBR) is approximately 1.44, confirming effective voltage limiting for protected ICs.
Is the 1.5KE82CAHE3/51 suitable for automotive applications?
Yes, the 1.5KE82CAHE3/51 is AEC-Q101 qualified and explicitly listed in Vishay's qualified part list for the 1.5KE6.8AHE3_A to 1.5KE220AHE3_A and 1.5KE6.8CAHE3_A to 1.5KE220CAHE3_A families. Its construction - including glass-passivated junction, JESD 201 Class 2 whisker resistance, and -55 °C to +175 °C operating range - meets automotive under-hood and module-level reliability requirements.
How does the bi-directional design of the 1.5KE82CAHE3/51 affect circuit layout?
The 1.5KE82CAHE3/51 has no polarity marking and functions identically in either orientation, simplifying PCB layout and eliminating risk of reverse installation. It is placed across the protected node and ground (or between differential lines), with no need for cathode/anode alignment. This symmetry also ensures protection against both positive- and negative-going transients without additional components.
What is the maximum steady-state power dissipation for the 1.5KE82CAHE3/51?
The 1.5KE82CAHE3/51 has a maximum steady-state power dissipation (PD) of 6.5 W when mounted on an infinite heatsink at lead temperature (TL) = 75 °C. In typical PCB mounting without heatsinking, derating applies per Figure 5 in the datasheet - e.g., ~4.5 W at TL = 50 °C. This rating governs continuous leakage power, not transient surge capability.
Does the 1.5KE82CAHE3/51 require external current-limiting components?
No, the 1.5KE82CAHE3/51 operates as a self-limiting avalanche device and does not require series resistors or fuses for basic transient suppression. However, in high-repetition-rate surge environments, a series impedance may be added to limit average power dissipation and prevent thermal runaway - especially when used with sustained overvoltage conditions beyond VWM.
1.5KE82CAHE3/51 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):
- 70.1V
- Voltage - Breakdown (Min):
- 77.9V
- Voltage - Clamping (Max) @ Ipp:
- 113V
- Current - Peak Pulse (10/1000µs):
- 13.3A
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 1.5KE
1.5KE82CAHE3/51 FAQ
1.How can I place an order for 1.5KE82CAHE3/51 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE82CAHE3/51 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 1.5KE82CAHE3/51 reliable?
The price and inventory of 1.5KE82CAHE3/51 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE82CAHE3/51 is usually 5 days.
3.What payment methods are accepted for 1.5KE82CAHE3/51?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE82CAHE3/51 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE82CAHE3/51?
1.5KE82CAHE3/51 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE82CAHE3/51 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 1.5KE82CAHE3/51?
For technical support, including 1.5KE82CAHE3/51 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE82CAHE3/51 requirements.
6.How does Aetrix verify that 1.5KE82CAHE3/51 is sourced from the original manufacturer or authorized distributors?
All 1.5KE82CAHE3/51 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 1.5KE82CAHE3/51 meets industry standards.
7.What is the process for return or replacement of 1.5KE82CAHE3/51?
All 1.5KE82CAHE3/51 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE82CAHE3/51, 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 1.5KE82CAHE3/51 part is unused and in its original packaging.
Return procedure for 1.5KE82CAHE3/51:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE82CAHE3/51 Tags
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