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Vishay General Semiconductor - Diodes Division 1N6291AHE3_B/C
- Part No.:
- 1N6291AHE3_B/C
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1N6291AHE3_B/C.pdf
- Description:
- 1.5KW,68V 5%,UNIDIR,AXIAL TVS
- Quantity:
- Payment:
- Shipping:
Inventory:3,991
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Product details
Overview
1N6291AHE3_B/C 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 64.6 V to 71.4 V breakdown voltage (VBR), 58.1 V maximum standoff voltage (VWM), 92.0 V clamping voltage 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 - used in automotive power supply input stages and industrial sensor interface protection.
For engineers reviewing the 1N6291AHE3_B/C datasheet, 1N6291AHE3_B/C pinout, 1N6291AHE3_B/C application, or 1N6291AHE3_B/C equivalent, this page delivers verified electrical parameters, thermal derating behavior, AEC-Q101 qualification status, RoHS-compliant HE3 packaging, and real-world clamping performance under lightning-surge and inductive-switching transients.
Technical Context
This unidirectional TVS diode uses a glass-passivated silicon junction optimized for fast transient response (<1 ns) and low incremental surge resistance. Its clamping action begins at 64.6 V (min VBR) and limits voltage to ≤92.0 V at 16.3 A (10/1000 µs waveform), enabling robust protection of downstream MOSFETs and ICs against ISO 7637-2 Pulse 1/2a/5a and IEC 61000-4-5 surges.
The device is rated for 200 A non-repetitive forward surge current (8.3 ms half-sine), exhibits 3.5 V max forward voltage at 100 A, and maintains stable operation up to 175 °C junction temperature with 75 °C/W junction-to-ambient thermal resistance - supporting high-reliability deployment in under-hood automotive modules and industrial PLC I/O circuits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 64.6 V / 71.4 V - defines precise voltage threshold where clamping initiates; ensures reliable turn-on before damage to 60 V-rated components |
| VWM | 58.1 V - maximum continuous reverse operating voltage; allows safe use on 48 V nominal systems with 20 % tolerance margin |
| VC @ IPPM | 92.0 V at 16.3 A - actual clamped voltage during 10/1000 µs surge; determines worst-case stress on protected circuitry |
| PPPM | 1500 W - peak pulse power handling capability; supports single-event lightning-level energy absorption per IEEE C62.41 |
| IFSM | 200 A - 8.3 ms surge current rating; enables survival of automotive load-dump transients without degradation |
| TJ Range | -55 °C to +175 °C - extended junction temperature range; qualified for engine control units and motor drive inverters |
| AEC-Q101 | Qualified - certified for automotive-grade reliability per stress test requirements including HTGB, HTRB, and TCT |
Pinout & Package
Package: Case Style 1.5KE - molded epoxy body with matte tin-plated leads; meets UL 94 V-0 flammability rating and JESD 22-B102 solderability standards. Cathode indicated by color band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point in forward bias | Connected to ground or low-side return path; enables clamping when cathode voltage exceeds VBR |
| Cathode | Current exit point in forward bias; marked with band | Connected to protected line (e.g., 48 V rail); absorbs surge energy by shunting to ground via anode |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Ensures stable VBR over temperature and lifetime; eliminates surface leakage paths in humid environments |
| 1500 W peak pulse power (10/1000 µs) | Handles full IEC 61000-4-5 Combination Wave (Line-Earth) surges up to 4 kV without failure |
| AEC-Q101 qualified (HE3_B variant) | Validated for automotive powertrain and chassis applications requiring zero defect rates and long-term field reliability |
| Low clamping ratio (VC/VBR ≈ 1.43) | Minimizes overvoltage overshoot during fast transients; protects 75 V max-rated MOSFETs and gate drivers |
| RoHS-compliant HE3 packaging | Meets JESD 201 Class 2 whisker resistance; suitable for lead-free reflow and high-reliability industrial assembly |
Applications
| Automotive Power Input Protection | Industrial Sensor Signal Line Protection |
|---|---|
Use Scenario: 48 V battery-fed ECU power input subjected to ISO 7637-2 Pulse 5a (load dump) and coupled transients. IC Role / Device Role / Timing Role: Primary clamping element placed between input rail and ground; responds within <1 ns to limit voltage excursion. Use Value: Clamps 120 V load dump spikes to ≤92 V, preventing damage to DC-DC controller ICs and pre-regulators rated for 100 V max. |
Use Scenario: Analog output line (4–20 mA) from pressure sensor exposed to ESD and inductive switching noise in factory automation. IC Role / Device Role / Timing Role: Unidirectional TVS placed across signal and return; suppresses ±8 kV contact ESD per IEC 61000-4-2. Use Value: Limits transient voltage to <92 V while adding <0.5 pF capacitance, preserving signal integrity up to 1 MHz bandwidth. |
| Telecom DC Power Feeds | Motor Drive Gate Driver Protection |
Use Scenario: -48 V telecom rectifier output feeding base station RF modules vulnerable to lightning-induced surges. IC Role / Device Role / Timing Role: Reverse-biased TVS on negative rail; conducts only during overvoltage events above |58.1 V|. Use Value: Absorbs 1500 W surge energy without latch-up, maintaining system uptime during outdoor site lightning strikes. |
Use Scenario: High-side gate driver supply (VDD) in 3-phase inverter subject to Miller-induced voltage spikes during IGBT switching. IC Role / Device Role / Timing Role: Clamp diode referenced to driver ground; activates before gate oxide breakdown threshold (~20 V). Use Value: Prevents gate driver IC destruction by limiting VDD-to-ground transients to ≤92 V during 100 ns dV/dt events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ64AHE3_A/H | Lower PPPM (600 W), smaller SMB package (3.5 mm × 4.6 mm), VBR = 71.1–78.8 V, VC = 103 V @ 5.8 A | Targeted at space-constrained PCBs with lower surge energy requirements (IEC 61000-4-5 Level 2) | Select when board area is critical and peak surge current remains below 6 A; not suitable for automotive load dump. |
| 1.5KE68AHE3_B/C | Same die, identical electrical specs, identical AEC-Q101 qualification - direct manufacturer cross-reference with identical marking and packaging | No functional or application difference; dual-part-number designation used interchangeably by Vishay | 1.5KE68AHE3_B/C is functionally identical to 1N6291AHE3_B/C and may be substituted without design change or requalification. |
Compared with SMBJ64AHE3_A/H, 1N6291AHE3_B/C delivers 2.5× higher surge power handling and automotive qualification, while 1.5KE68AHE3_B/C offers identical performance with alternate part numbering - making it the only true drop-in replacement.
Availability
1N6291AHE3_B/C is available at Aetrix Electronics and suitable for automotive power distribution units, industrial programmable logic controllers, telecom DC power systems, and motor control gate driver protection requiring stable component supply and long-term lifecycle support.
Supply support for 1N6291AHE3_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 diodes, MOSFETs, optoelectronics, and passive components with emphasis on reliability and application-specific performance.
The 1N6291AHE3_B/C belongs to Vishay's TRANSZORB® TVS family, engineered specifically for high-energy transient suppression in harsh environments including automotive, industrial, and telecom infrastructure.
FAQ
What is the breakdown voltage range for the 1N6291AHE3_B/C?
The 1N6291AHE3_B/C has a specified breakdown voltage (VBR) range of 64.6 V (minimum) to 71.4 V (maximum) at 1.0 mA test current. This tight tolerance ensures consistent clamping initiation across production lots and temperature extremes, critical for protecting 60 V-rated power management ICs in automotive applications.
Is the 1N6291AHE3_B/C AEC-Q101 qualified?
Yes, the 1N6291AHE3_B/C with HE3_B/C suffix is AEC-Q101 qualified. This certification covers stress tests including high-temperature reverse bias (HTRB), high-temperature gate bias (HTGB), temperature cycling (TCT), and mechanical shock - confirming suitability for automotive powertrain and body electronics applications.
What is the clamping voltage of the 1N6291AHE3_B/C at its rated peak pulse current?
The 1N6291AHE3_B/C clamps to a maximum of 92.0 V at its rated peak pulse current of 16.3 A (10/1000 µs waveform). This value represents the worst-case voltage seen by protected circuitry during standardized surge events and is measured per JEDEC standards.
How does the 1N6291AHE3_B/C differ from the 1.5KE68AHE3_B/C?
The 1N6291AHE3_B/C and 1.5KE68AHE3_B/C are electrically and mechanically identical parts from Vishay - same die, same package (Case Style 1.5KE), same AEC-Q101 qualification, and same electrical specifications. They are dual-marked variants used interchangeably in Vishay's documentation and ordering systems.
What is the maximum operating junction temperature for the 1N6291AHE3_B/C?
The 1N6291AHE3_B/C has a maximum operating junction temperature (TJ) of +175 °C and a storage temperature range of -55 °C to +175 °C. This wide range supports deployment in under-hood automotive modules, industrial motor drives, and other high-ambient-temperature environments without derating.
1N6291AHE3_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):
- 16.3A
- 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
1N6291AHE3_B/C FAQ
1.How can I place an order for 1N6291AHE3_B/C through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N6291AHE3_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 1N6291AHE3_B/C reliable?
The price and inventory of 1N6291AHE3_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 1N6291AHE3_B/C is usually 5 days.
3.What payment methods are accepted for 1N6291AHE3_B/C?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N6291AHE3_B/C transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N6291AHE3_B/C?
1N6291AHE3_B/C orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N6291AHE3_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 1N6291AHE3_B/C?
For technical support, including 1N6291AHE3_B/C datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N6291AHE3_B/C requirements.
6.How does Aetrix verify that 1N6291AHE3_B/C is sourced from the original manufacturer or authorized distributors?
All 1N6291AHE3_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 1N6291AHE3_B/C meets industry standards.
7.What is the process for return or replacement of 1N6291AHE3_B/C?
All 1N6291AHE3_B/C units undergo pre-shipment inspection (PSI). If there is an issue with 1N6291AHE3_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 1N6291AHE3_B/C part is unused and in its original packaging.
Return procedure for 1N6291AHE3_B/C:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N6291AHE3_B/C Tags
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