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Vishay General Semiconductor - Diodes Division 1.5KE68AHE3_B/C
- Part No.:
- 1.5KE68AHE3_B/C
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE68AHE3_B/C.pdf
- Description:
- 1.5KW,68V 5%,UNIDIR,AXIAL TVS
- Quantity:
- Payment:
- Shipping:
Inventory:8,883
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Product details
Overview
1.5KE68AHE3_B/C from Vishay General Semiconductor is a unidirectional Transient Voltage Suppressor (TVS) diode designed for primary overvoltage protection in DC power rails and signal lines. It features a 64.6 V minimum breakdown voltage (VBR), 58.1 V maximum standoff voltage (VWM), 92.0 V clamping voltage (VC) at 16.3 A peak pulse current, 1500 W peak pulse power rating (10/1000 µs), and operates across -55 °C to +175 °C junction temperature range.
For engineers reviewing the 1.5KE68AHE3_B/C datasheet, 1.5KE68AHE3_B/C pinout, 1.5KE68AHE3_B/C application, or 1.5KE68AHE3_B/C equivalent, this device serves as a robust, AEC-Q101-qualified transient suppressor for automotive power supply inputs, industrial sensor interfaces, and telecom line protection where fast clamping (<1 ns), low incremental surge resistance, and high surge current capability are critical selection criteria.
Technical Context
This TVS diode employs a glass passivated silicon junction optimized for bidirectional-capable family architecture but configured as unidirectional - cathode marked with color band. Its clamping behavior follows a well-defined incremental voltage curve (ΔVC = VC − VBR) under 10/1000 µs transients, with thermal resistance of 15.4 °C/W (junction-to-lead) enabling reliable power dissipation in leaded PCB mounting.
The device complies with JEDEC standard test conditions for peak pulse power (PPPM), uses matte tin-plated leads solderable per J-STD-002, and meets UL 94 V-0 flammability rating via molded epoxy encapsulation. The HE3 suffix confirms RoHS compliance and AEC-Q101 qualification per note (2) in the datasheet.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 64.6 V / 71.4 V - defines precise voltage threshold at which clamping initiates under 1 mA test current |
| VWM | 58.1 V - maximum continuous reverse operating voltage before leakage exceeds 1 μA |
| VC @ IPPM | 92.0 V @ 16.3 A - clamped voltage during 10/1000 µs surge, directly limiting downstream IC stress |
| PPPM | 1500 W - peak transient power handling capacity, enabling protection against lightning-induced surges |
| IFSM | 200 A - single half-sine surge current rating (8.3 ms), supporting high-energy fault events |
| TJ max | +175 °C - extended junction temperature enables use in under-hood automotive and industrial environments |
| RθJL | 15.4 °C/W - low junction-to-lead thermal resistance supports stable operation without heatsink in moderate-power layouts |
Pinout & Package
Package: Case Style 1.5KE - axial-leaded, molded epoxy body with matte tin-plated leads; 0.375" (9.5 mm) lead length; UL 94 V-0 rated; RoHS compliant and AEC-Q101 qualified (HE3 suffix).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential side (e.g., ground or return path) in unidirectional configuration |
| Cathode | Reverse-biased clamping terminal | Marked with color band; connected to protected line (e.g., 48 V rail or CAN_H); conducts during overvoltage |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Ensures stable VBR tolerance and long-term reliability under thermal cycling and humidity stress |
| 1500 W peak pulse power (10/1000 µs) | Provides robust immunity to IEC 61000-4-5 Level 4 surges (4 kV line-earth) in industrial power supplies |
| Clamping response time <1 ns | Protects sensitive MOSFET gates and MCU I/O pins before damage-inducing voltage overshoot occurs |
| AEC-Q101 qualified (HE3 suffix) | Validated for automotive powertrain and body electronics applications requiring zero defect reliability |
| Low incremental surge resistance | Minimizes VC rise under high di/dt transients, preserving safe operating area of protected FETs |
Applications
| Automotive Power Input Protection | Industrial Sensor Signal Line Protection |
|---|---|
Use Scenario: 12 V/24 V battery input to engine control unit (ECU) exposed to load dump (ISO 7637-2 Pulse 5a) and jump-start transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery rail and input filter capacitor to clamp transients before they reach DC-DC converter ICs. Use Value: Clamps 120 V/200 A load dump spikes to ≤92 V within nanoseconds, preventing gate oxide rupture in upstream PMICs. | Use Scenario: 4–20 mA current loop interface in factory automation PLC analog input module subjected to EFT (IEC 61000-4-4) and surge coupling. IC Role / Device Role / Timing Role: TVS mounted at connector entry point to shunt induced common-mode transients before reaching op-amp front-end and ADC. Use Value: Limits transient voltage on signal line to 92 V while maintaining <1 μA leakage at 58.1 V, preserving measurement accuracy. |
| Telecom DC Power Feeding Protection | Consumer Power Adapter Output Protection |
Use Scenario: -48 V DC feeding line in remote radio head (RRH) powered via PoE-like infrastructure, vulnerable to lightning-induced surges on outdoor cabling. IC Role / Device Role / Timing Role: Primary protection device on -48 V input rail, coordinated with secondary GDT or MOV for staged clamping. Use Value: Absorbs up to 1500 W of surge energy while holding clamped voltage below -60 V absolute, safeguarding GaN FETs and monitoring ICs. | Use Scenario: Secondary-side 5 V/12 V output of wall adapter protecting USB-C PD controller and Type-C port circuitry from user-induced hot-plug transients. IC Role / Device Role / Timing Role: Final-stage TVS placed immediately before connector, acting as last line of defense against contact bounce and cable discharge events. Use Value: Responds in <1 ns to sub-microsecond transients, clamping to 92 V before voltage propagates into USB PD PHY or MCU VBUS detection circuit. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ64A | Lower PPPM (600 W), smaller SMB package (surface-mount), VC = 103 V @ 5.8 A | Not AEC-Q101 qualified; suited for space-constrained consumer PCBs, not under-hood automotive | Select when board space is limited and surge energy is ≤600 W; verify thermal relief for SMB footprint. |
| 1.5KE68CA | Bidirectional variant; same VBR/VC specs but symmetric clamping in both polarities | Required for AC-coupled lines (e.g., RS-485, CAN bus) where polarity reversal occurs during normal operation | Choose only if protecting bidirectional signals; unidirectional 1.5KE68AHE3_B/C is inappropriate for such use cases. |
Compared with SMBJ64A, the 1.5KE68AHE3_B/C delivers 2.5× higher surge power handling and automotive qualification, while 1.5KE68CA offers identical electrical performance with bidirectional symmetry-making the original part optimal for cost-sensitive, high-energy unidirectional DC rail protection where AEC-Q101 compliance is mandatory.
Availability
1.5KE68AHE3_B/C is available at Aetrix Electronics and suitable for automotive power modules, industrial sensor interfaces, telecom DC feeding systems, and consumer power adapters requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for 1.5KE68AHE3_B/C 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, optoelectronics, 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 power distribution, industrial control I/O, and telecom infrastructure where failure modes must be mitigated without compromising long-term stability.
FAQ
What is the clamping voltage of the 1.5KE68AHE3_B/C under maximum rated surge current?
The 1.5KE68AHE3_B/C exhibits a maximum clamping voltage (VC) of 92.0 V when subjected to its rated peak pulse current (IPPM) of 16.3 A using the standardized 10/1000 µs waveform. This value is measured per JEDEC test conditions and ensures predictable overvoltage limiting for downstream components. The 1.5KE68AHE3_B/C maintains this clamping performance across its full operating temperature range (-55 °C to +175 °C), with minimal derating required up to 125 °C ambient.
Is the 1.5KE68AHE3_B/C suitable for automotive applications?
Yes, the 1.5KE68AHE3_B/C is explicitly AEC-Q101 qualified per datasheet note (2), covering devices from 1.5KE6.8AHE3_B to 1.5KE220AHE3_B. Its construction - glass passivated junction, matte tin-plated leads, UL 94 V-0 molding compound, and 175 °C maximum junction temperature - meets automotive reliability requirements for powertrain, body control, and ADAS subsystems. The 1.5KE68AHE3_B/C is commonly deployed on 12 V/24 V battery rails and sensor supply lines in production vehicles.
How does the 1.5KE68AHE3_B/C differ from the standard 1.5KE68A-E3?
The 1.5KE68AHE3_B/C differs from the commercial-grade 1.5KE68A-E3 primarily in qualification and marking: the HE3 suffix denotes AEC-Q101 qualification and enhanced whisker resistance (JESD 201 Class 2), while the "B/C" denotes packaging variant (13" paper tape and reel, 1400 units). Electrically and thermally, both share identical VBR, VC, PPPM, and RθJL specifications. The 1.5KE68AHE3_B/C is intended for automotive and industrial applications requiring certified reliability, whereas the -E3 version is for general commercial use.
What is the standoff voltage rating for the 1.5KE68AHE3_B/C?
The 1.5KE68AHE3_B/C has a maximum working peak reverse voltage (VWM) of 58.1 V, meaning it can continuously block up to this DC or RMS voltage without exceeding 1 μA reverse leakage current at 25 °C. This allows safe integration into 48 V nominal systems (e.g., automotive 48 V mild hybrid architectures or industrial 48 V DC buses) with sufficient margin above typical operating voltage. The 1.5KE68AHE3_B/C remains fully functional up to its 175 °C junction limit, with VWM derating per the datasheet's thermal curves.
Can the 1.5KE68AHE3_B/C be used in bidirectional protection circuits?
No - the 1.5KE68AHE3_B/C is a unidirectional TVS diode, indicated by the "A" suffix and cathode band marking. For bidirectional protection (e.g., on AC lines, differential buses like RS-485 or CAN), the correct variant is 1.5KE68CA, which provides symmetrical clamping in both polarities. Using the unidirectional 1.5KE68AHE3_B/C in a bidirectional application would result in forward conduction and potential failure during negative transients. Always match the device polarity suffix ("A" for unidirectional, "CA" for bidirectional) to the circuit topology.
1.5KE68AHE3_B/C 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:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 58.1V
- Voltage - Breakdown (Min):
- 64.6V
- Voltage - Clamping (Max) @ Ipp:
- 92V
- Current - Peak Pulse (10/1000µs):
- 17A
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 1.5KE
1.5KE68AHE3_B/C FAQ
1.How can I place an order for 1.5KE68AHE3_B/C through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE68AHE3_B/C 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 1.5KE68AHE3_B/C reliable?
The price and inventory of 1.5KE68AHE3_B/C are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE68AHE3_B/C is usually 5 days.
3.What payment methods are accepted for 1.5KE68AHE3_B/C?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE68AHE3_B/C transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE68AHE3_B/C?
1.5KE68AHE3_B/C orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE68AHE3_B/C 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 1.5KE68AHE3_B/C?
For technical support, including 1.5KE68AHE3_B/C datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE68AHE3_B/C requirements.
6.How does Aetrix verify that 1.5KE68AHE3_B/C is sourced from the original manufacturer or authorized distributors?
All 1.5KE68AHE3_B/C 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 1.5KE68AHE3_B/C meets industry standards.
7.What is the process for return or replacement of 1.5KE68AHE3_B/C?
All 1.5KE68AHE3_B/C units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE68AHE3_B/C, 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 1.5KE68AHE3_B/C part is unused and in its original packaging.
Return procedure for 1.5KE68AHE3_B/C:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE68AHE3_B/C Tags
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