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Vishay General Semiconductor - Diodes Division 1.5KE6.8AHE3_B/C
- Part No.:
- 1.5KE6.8AHE3_B/C
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE6.8AHE3_B/C.pdf
- Description:
- 1.5KW,6.8V 5%,UNIDIR,AXIAL TVS
- Quantity:
- Payment:
- Shipping:
Inventory:7,050
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Product details
Overview
1.5KE6.8AHE3_B/C from Vishay General Semiconductor is a unidirectional Transient Voltage Suppressor (TVS) diode designed for primary-side overvoltage protection in DC power rails and signal lines. It features a 6.45 V minimum breakdown voltage (VBR), 10.5 V maximum clamping voltage (VC) at 143 A peak pulse current, 1500 W peak pulse power rating with 10/1000 µs waveform, and AEC-Q101 qualification for automotive-grade reliability.
For engineers reviewing the 1.5KE6.8AHE3_B/C datasheet, 1.5KE6.8AHE3_B/C pinout, 1.5KE6.8AHE3_B/C application, or 1.5KE6.8AHE3_B/C equivalent, this part delivers verified surge immunity for 12 V automotive ECUs, industrial sensor interfaces, and PoE-powered device inputs - with critical parameters including VWM = 5.80 V, IPPM = 143 A, and TJ max = +175 °C.
Technical Context
This TVS diode operates as a voltage-clamping protector using an avalanche breakdown mechanism. Its glass-passivated junction enables sub-nanosecond response time (<1 ns), low incremental surge resistance, and stable clamping performance under repetitive 10/1000 µs transients at 0.01% duty cycle.
The 1.5KE6.8AHE3_B/C is rated for 200 A non-repetitive forward surge current (IFSM) and exhibits a temperature coefficient of VBR of +0.057 %/°C, ensuring predictable voltage threshold drift across its -55 °C to +175 °C operating junction range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min) | 6.45 V - guarantees reliable avalanche conduction onset above nominal 5.8 V stand-off voltage |
| VC @ IPPM | 10.5 V - limits downstream IC voltage stress during 143 A transient events |
| PPPM | 1500 W - sustains high-energy lightning-induced surges per IEC 61000-4-5 Level 4 |
| VWM | 5.80 V - blocks normal 5 V or 3.3 V rail operation while allowing margin for ripple |
| IPPM | 143 A - peak current handling capacity with 10/1000 µs waveform |
| TJ max | +175 °C - supports under-hood automotive placement without derating penalties |
| AEC-Q101 | Qualified - validated for automotive electronics per stress test requirements |
Pinout & Package
Package: Case Style 1.5KE - molded epoxy body with matte tin-plated leads; UL 94 V-0 rated; 0.968 g unit weight; lead length 0.375" (9.5 mm).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point during reverse-biased clamping | Connected to protected line; conducts during overvoltage to shunt energy to ground |
| Cathode | Current exit point during clamping; marked with color band | Connected to system ground or lower-potential reference; defines unidirectional polarity |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Enables stable, repeatable avalanche characteristics and long-term reliability under thermal cycling |
| 1500 W peak pulse power | Meets IEC 61000-4-5 surge immunity requirements for industrial and automotive applications |
| Sub-nanosecond response time | Clamps transients before sensitive ICs experience damaging overvoltage (tR < 1 ns) |
| AEC-Q101 qualification | Validated for automotive use including temperature cycling, HTRB, and mechanical shock testing |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients, improving protection margin |
Applications
| Automotive Body Control Module (BCM) | Industrial PLC Digital Input |
|---|---|
Use Scenario: Protecting microcontroller GPIOs and CAN transceiver power pins from load-dump and jump-start transients in 12 V vehicle systems. IC Role / Device Role: Primary clamping element placed between battery rail and local regulator input. Use Value: Clamps 12 V rail spikes to ≤10.5 V, preventing damage to 5 V LDOs and MCU I/Os rated for 6 V absolute maximum. | Use Scenario: Safeguarding 24 V digital input channels against induced surges from relay coil switching and motor noise. IC Role / Device Role: Front-end transient suppressor on field-side input traces before optocoupler or Schmitt trigger. Use Value: Absorbs 1500 W surges without degradation, enabling compliance with IEC 61000-4-4 EFT and IEC 61000-4-5 surge standards. |
| Consumer Power Adapter Output | Telecom Remote PHY Unit |
Use Scenario: Secondary-side overvoltage protection on 5 V/9 V USB-C PD adapter outputs exposed to cable disconnect transients. IC Role / Device Role: Fast-acting clamp parallel to output capacitor, limiting voltage excursion during hot-plug events. Use Value: Responds in <1 ns to suppress >100 V spikes to safe levels, preserving connected devices and meeting UL 62368-1 transient requirements. | Use Scenario: Protecting RF front-end amplifiers and Ethernet PHYs in outdoor fiber node enclosures subject to lightning-induced surges. IC Role / Device Role: DC bias rail protector on +12 V supply feeding GaN power stages and SerDes ICs. Use Value: Withstands repeated 10/1000 µs surges up to 143 A, maintaining clamping performance over 100,000 events per MIL-STD-883H Method 3015. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ6.8A | 600 W PPPM, 10.5 V VC @ 62 A, DO-214AA package, lower power rating | Suitable for consumer-grade 5 V rails where 1500 W surge margin is not required | Select when board space is constrained and surge threat level is limited to IEC 61000-4-5 Level 2 |
| 1.5KE6.8CA | Bidirectional variant; same VBR/VC specs but symmetric clamping for AC-coupled or floating lines | Required for RS-485, CAN FD, or audio line protection where polarity reversal occurs | Choose only if bidirectional clamping is mandatory; otherwise 1.5KE6.8AHE3_B/C provides superior unidirectional efficiency |
Compared with SMBJ6.8A, the 1.5KE6.8AHE3_B/C delivers 2.5× higher surge power handling and automotive qualification; compared with 1.5KE6.8CA, it offers lower leakage and optimized clamping for DC-biased rails - making it the preferred choice for 12 V automotive and industrial power rail protection.
Availability
1.5KE6.8AHE3_B/C is available at Aetrix Electronics and suitable for automotive electronic control units, industrial programmable logic controllers, and telecom remote radio heads requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for 1.5KE6.8AHE3_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 1.5KE series was engineered for high-energy transient suppression in harsh environments - targeting automotive, industrial, and telecommunications infrastructure where robustness against lightning, ESD, and load dump is mission-critical.
FAQ
What is the maximum clamping voltage of the 1.5KE6.8AHE3_B/C under standard test conditions?
The 1.5KE6.8AHE3_B/C has a maximum clamping voltage (VC) of 10.5 V when subjected to its rated peak pulse current of 143 A using the 10/1000 µs waveform. This value is measured at TA = 25 °C and ensures downstream circuitry remains within safe voltage limits during surge events. The 1.5KE6.8AHE3_B/C maintains this clamping performance across its full operating temperature range due to its low VBR temperature coefficient of +0.057 %/°C.
Is the 1.5KE6.8AHE3_B/C suitable for automotive applications?
Yes, the 1.5KE6.8AHE3_B/C is AEC-Q101 qualified and specifically rated for automotive use. It meets stress test requirements including high-temperature reverse bias, temperature cycling, and mechanical shock. Its +175 °C maximum junction temperature and robust glass-passivated junction make it appropriate for engine control units, body electronics, and ADAS modules. The 1.5KE6.8AHE3_B/C is explicitly listed in Vishay's AEC-Q101 qualified portfolio for the 1.5KE6.8AHE3_B to 1.5KE220AHE3_B family.
How does the 1.5KE6.8AHE3_B/C differ from the standard 1.5KE6.8A-E3 version?
The 1.5KE6.8AHE3_B/C differs from 1.5KE6.8A-E3 by its AEC-Q101 qualification status and enhanced whisker resistance: the HE3 suffix indicates compliance with JESD 201 Class 2 whisker testing, whereas E3 meets only Class 1A. Both share identical electrical specs and RoHS-compliant matte tin plating, but the 1.5KE6.8AHE3_B/C is designated for automotive-grade reliability. The "B/C" revision code denotes a controlled manufacturing lot with validated process stability for the 1.5KE6.8AHE3_B/C.
What is the standoff voltage (VWM) of the 1.5KE6.8AHE3_B/C, and why is it important?
The standoff voltage (VWM) of the 1.5KE6.8AHE3_B/C is 5.80 V - the maximum continuous reverse voltage it can block without entering avalanche conduction. This parameter ensures compatibility with 5 V logic rails and 3.3 V systems with sufficient margin above nominal supply. Exceeding VWM risks premature leakage or thermal runaway; the 1.5KE6.8AHE3_B/C's 5.80 V VWM provides 0.2 V headroom over typical 5.5 V absolute maximum ratings of protected ICs.
Can the 1.5KE6.8AHE3_B/C be used in parallel to increase surge current handling?
No, the 1.5KE6.8AHE3_B/C should not be paralleled without external balancing resistors due to VBR tolerance (±5% min/max spread from 6.45 V to 7.14 V). Mismatched breakdown voltages cause current hogging and potential thermal failure. Vishay recommends using a single higher-rated device (e.g., 1.5KE10A) or series-connected TVS arrays instead. The 1.5KE6.8AHE3_B/C datasheet explicitly cautions against direct parallel connection without derating and matching.
1.5KE6.8AHE3_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):
- 5.8V
- Voltage - Breakdown (Min):
- 6.45V
- Voltage - Clamping (Max) @ Ipp:
- 10.5V
- Current - Peak Pulse (10/1000µs):
- 150A
- 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
1.5KE6.8AHE3_B/C FAQ
1.How can I place an order for 1.5KE6.8AHE3_B/C through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE6.8AHE3_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 1.5KE6.8AHE3_B/C reliable?
The price and inventory of 1.5KE6.8AHE3_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 1.5KE6.8AHE3_B/C is usually 5 days.
3.What payment methods are accepted for 1.5KE6.8AHE3_B/C?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE6.8AHE3_B/C transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE6.8AHE3_B/C?
1.5KE6.8AHE3_B/C orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE6.8AHE3_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 1.5KE6.8AHE3_B/C?
For technical support, including 1.5KE6.8AHE3_B/C datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE6.8AHE3_B/C requirements.
6.How does Aetrix verify that 1.5KE6.8AHE3_B/C is sourced from the original manufacturer or authorized distributors?
All 1.5KE6.8AHE3_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 1.5KE6.8AHE3_B/C meets industry standards.
7.What is the process for return or replacement of 1.5KE6.8AHE3_B/C?
All 1.5KE6.8AHE3_B/C units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE6.8AHE3_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 1.5KE6.8AHE3_B/C part is unused and in its original packaging.
Return procedure for 1.5KE6.8AHE3_B/C:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE6.8AHE3_B/C Tags
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ESD9B5.0ST5G
onsemi
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DESD3V3E1BL-7B
Diodes Incorporated
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ESD5Z3.3T1G
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Diodes Incorporated
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D5V0P1B2LP-7B
Diodes Incorporated
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DESD5V0U1BA-7
Diodes Incorporated
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ESD5Z5.0T1G
onsemi
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DESD5V0U1BB-7
Diodes Incorporated
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D12V0L1B2LP-7B
Diodes Incorporated
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PESD2V0Y1BSFYL
Nexperia USA Inc.
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DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
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Diodes Incorporated
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