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Vishay General Semiconductor - Diodes Division 1.5KE6.8CAHE3_B/C
- Part No.:
- 1.5KE6.8CAHE3_B/C
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE6.8CAHE3_B/C.pdf
- Description:
- 1.5KW,6.8V 5%,BIDIR,AXIAL TVS
- Quantity:
- Payment:
- Shipping:
Inventory:5,426
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Product details
Overview
1.5KE6.8CAHE3_B/C from Vishay General Semiconductor is a bidirectional Transient Voltage Suppressor (TVS) diode designed for robust overvoltage protection in power and signal lines. It features a 6.8 V breakdown voltage (VBR), 1500 W peak pulse power (10/1000 µs), clamping voltage of 10.5 V at 143 A, ±5.8 V standoff voltage, and operates across –55 °C to +175 °C. It protects sensitive ICs and MOSFETs against lightning-induced transients and inductive switching surges in automotive and industrial power supplies.
For engineers reviewing the 1.5KE6.8CAHE3_B/C datasheet, 1.5KE6.8CAHE3_B/C pinout, 1.5KE6.8CAHE3_B/C application, or 1.5KE6.8CAHE3_B/C equivalent, this page delivers verified electrical parameters, AEC-Q101 qualification status, thermal resistance (RθJL = 15.4 °C/W), JEDEC 1.5KE package dimensions, and real-world use cases in bidirectional DC bus and sensor interface protection.
Technical Context
This bidirectional TVS diode uses a glass-passivated silicon junction optimized for sub-nanosecond response (<1 ns) and low incremental surge resistance. Its symmetrical clamping behavior ensures identical forward and reverse protection thresholds, enabling direct placement across AC-coupled or floating differential lines without polarity concerns.
Rated for 1500 W peak pulse power under 10/1000 µs waveform with 0.01% duty cycle, it sustains repetitive transient events while maintaining stable clamping up to TJ = 175 °C. The device meets JESD201 Class 2 whisker resistance (HE3 suffix) and UL 94 V-0 flammability requirements per molded epoxy case construction.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 6.45 V / 7.14 V - Ensures reliable conduction onset within tight tolerance for precise overvoltage thresholding |
| VWM | 5.80 V - Maximum continuous working voltage before leakage exceeds 1000 µA; defines safe operating margin below breakdown |
| IPPM | 143 A - Peak surge current capability at 10/1000 µs; determines maximum transient energy absorption without failure |
| VC | 10.5 V - Clamped voltage at IPPM; directly limits stress on downstream components during surge events |
| PPPM | 1500 W - Peak pulse power rating; enables protection of 12 V/24 V systems against ISO 7637-2 Pulse 1/2/5a/b threats |
| TJ max. | +175 °C - High junction temperature rating supports under-hood automotive and high-ambient industrial deployments |
| RθJL | 15.4 °C/W - Low junction-to-lead thermal resistance allows effective heat dissipation through PCB copper pours or chassis mounting |
Pinout & Package
Package: JEDEC Case Style 1.5KE - molded epoxy body, axial-leaded, RoHS-compliant matte tin-plated leads. Dimensions: 5.3 mm × 5.3 mm × 9.5 mm (L × W × H), lead diameter 1.07 mm, lead spacing 9.5 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Bidirectional terminal pair | No polarity marking; interchangeable terminals enable placement across any two-point voltage node without orientation constraints |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Enables stable VBR tolerance and long-term reliability under thermal cycling and humidity exposure |
| AEC-Q101 qualified (HE3_B/C) | Validated for automotive powertrain and body electronics per stress test requirements including HTGB, HTRB, and TCT |
| 1500 W peak pulse power (10/1000 µs) | Supports IEC 61000-4-5 Level 4 (4 kV line-earth) and ISO 16750-2 Load Dump immunity in 12 V systems |
| Sub-nanosecond response time | Clamps transients before propagation into protected circuitry-critical for safeguarding high-speed logic and analog front-ends |
| UL 94 V-0 flammability rating | Mold compound self-extinguishes under flame exposure, meeting safety standards for enclosed industrial enclosures |
Applications
| Automotive Power Distribution | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protection of 12 V battery-fed ECUs against load dump and alternator ripple transients. IC Role / Device Role: Bidirectional clamping element placed across main power rail upstream of DC-DC converters. Use Value: Limits rail voltage to ≤10.5 V during 1500 W surges, preventing latch-up or gate oxide damage in downstream PMICs and microcontrollers. |
Use Scenario: Shielding 4–20 mA current loop transmitters from ESD and field-induced surges in factory automation. IC Role / Device Role: Line-to-line TVS across twisted-pair sensor output to suppress common-mode transients. Use Value: Symmetrical clamping preserves signal integrity during ±8 kV contact ESD (IEC 61000-4-2) without polarity biasing or additional components. |
| Telecom DC Power Feeds | Consumer Appliance Motor Control |
Use Scenario: Overvoltage suppression on -48 V telecom rectifier outputs exposed to lightning-induced surges on outdoor plant wiring. IC Role / Device Role: Bidirectional shunt protector between power and return lines in redundant feed architecture. Use Value: Withstands 10/1000 µs surges up to 143 A while maintaining <1 µA leakage at -41.8 V, ensuring minimal standby loss. |
Use Scenario: Protecting BLDC motor driver gate drivers from inductive kickback during PWM commutation. IC Role / Device Role: Clamp across half-bridge leg supply rails to absorb flyback energy from parasitic inductance. Use Value: 10.5 V clamping prevents gate-source overvoltage on 25 V-rated MOSFETs, eliminating need for external Zener networks. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ6.8CA | Lower PPPM (600 W), smaller SMB package (3.6 mm × 2.5 mm), higher VC (11.2 V @ 53.3 A) | Best suited for space-constrained PCBs with lower-energy transients (e.g., USB ports, low-power sensors) | Select when board area is critical and surge threat level is ≤IEC 61000-4-5 Level 2; not suitable for automotive load dump. |
| 1.5SMC6.8CA | Same PPPM (1500 W), SMC package (7.1 mm × 6.2 mm), slightly higher VBR (6.45–7.14 V), identical VC (10.5 V) | Offers improved thermal performance via larger pad area but requires rework of footprint and layout | Choose for enhanced thermal margin in high-reliability industrial power supplies where axial lead assembly is not required. |
Compared with 1.5KE6.8CAHE3_B/C, SMBJ6.8CA trades peak power and thermal robustness for compactness, while 1.5SMC6.8CA matches power rating but shifts to surface-mount assembly-neither is pin-compatible, and both require layout revision and thermal validation for drop-in replacement.
Availability
1.5KE6.8CAHE3_B/C is available at Aetrix Electronics and suitable for automotive power distribution, industrial sensor interfaces, telecom DC feeds, and consumer appliance motor control requiring stable component supply across extended temperature and high-surge environments.
Supply support for 1.5KE6.8CAHE3_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 designs and manufactures discrete semiconductors with emphasis on reliability, ruggedness, and application-specific performance for automotive, industrial, and computing markets.
The 1.5KE series was developed specifically for high-energy transient suppression in harsh-environment power systems, targeting AEC-Q101 compliance and sustained operation up to 175 °C junction temperature.
FAQ
What is the breakdown voltage tolerance for 1.5KE6.8CAHE3_B/C?
The 1.5KE6.8CAHE3_B/C has a specified breakdown voltage range of 6.45 V to 7.14 V at 10 mA test current (IT). This ±5% tolerance ensures consistent clamping onset across production lots and supports predictable system-level overvoltage design margins in automotive and industrial applications.
Is 1.5KE6.8CAHE3_B/C qualified for automotive use?
Yes, 1.5KE6.8CAHE3_B/C carries the HE3 suffix, indicating full AEC-Q101 qualification per Vishay documentation (Document 88301, Note 2). It has passed stress tests including high-temperature reverse bias, temperature cycling, and unbiased highly accelerated stress testing for deployment in engine control units and body electronics.
What does the "CA" suffix mean in 1.5KE6.8CAHE3_B/C?
The "CA" suffix denotes a bidirectional configuration: the device provides symmetrical transient suppression in both polarities, with identical VBR, VC, and IPPM characteristics in forward and reverse directions. No polarity marking is present on the body, confirming its non-directional use in AC or floating DC applications.
How does the clamping voltage of 1.5KE6.8CAHE3_B/C compare to its standoff voltage?
The 1.5KE6.8CAHE3_B/C has a maximum standoff voltage (VWM) of 5.80 V and a clamping voltage (VC) of 10.5 V at 143 A. This 4.7 V headroom ensures reliable blocking during normal operation while limiting surge-induced stress to downstream components to a safe, defined ceiling during transient events.
Can 1.5KE6.8CAHE3_B/C be used in parallel for higher power handling?
Yes, multiple 1.5KE6.8CAHE3_B/C devices can be paralleled to increase total peak pulse power capacity, provided matched VBR units are selected and PCB layout ensures equal current sharing (e.g., symmetrical trace lengths, shared thermal plane). Derating per Vishay's Fig. 2 applies above TA = 25 °C.
1.5KE6.8CAHE3_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:
- -
- Bidirectional Channels:
- 1
- 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
1.5KE6.8CAHE3_B/C FAQ
1.How can I place an order for 1.5KE6.8CAHE3_B/C through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE6.8CAHE3_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 1.5KE6.8CAHE3_B/C reliable?
The price and inventory of 1.5KE6.8CAHE3_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 1.5KE6.8CAHE3_B/C is usually 5 days.
3.What payment methods are accepted for 1.5KE6.8CAHE3_B/C?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE6.8CAHE3_B/C transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE6.8CAHE3_B/C?
1.5KE6.8CAHE3_B/C orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE6.8CAHE3_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 1.5KE6.8CAHE3_B/C?
For technical support, including 1.5KE6.8CAHE3_B/C datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE6.8CAHE3_B/C requirements.
6.How does Aetrix verify that 1.5KE6.8CAHE3_B/C is sourced from the original manufacturer or authorized distributors?
All 1.5KE6.8CAHE3_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 1.5KE6.8CAHE3_B/C meets industry standards.
7.What is the process for return or replacement of 1.5KE6.8CAHE3_B/C?
All 1.5KE6.8CAHE3_B/C units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE6.8CAHE3_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 1.5KE6.8CAHE3_B/C part is unused and in its original packaging.
Return procedure for 1.5KE6.8CAHE3_B/C:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE6.8CAHE3_B/C Tags
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DESD3V3E1BL-7B
Diodes Incorporated
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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