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Vishay General Semiconductor - Diodes Division 1.5KE6.8CHE3/73
- Part No.:
- 1.5KE6.8CHE3/73
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE6.8CHE3/73.pdf
- Description:
- TVS DIODE 5.5VWM 10.8VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:4,636
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Product details
Overview
1.5KE6.8CHE3/73 from Vishay General Semiconductor is a unidirectional Transient Voltage Suppressor (TVS) diode designed for primary overvoltage protection on DC power rails and signal lines. It features a 6.8 V breakdown voltage (VBR = 6.45–7.14 V at 10 mA), 1500 W peak pulse power (10/1000 µs), clamping voltage of 10.5 V at 143 A, and operates across –55 °C to +175 °C junction temperature. It is used in automotive ECUs, industrial PLC I/O modules, and telecom power supplies.
For engineers reviewing the 1.5KE6.8CHE3/73 datasheet, 1.5KE6.8CHE3/73 pinout, 1.5KE6.8CHE3/73 application, or 1.5KE6.8CHE3/73 equivalent, this page delivers verified electrical parameters, JEDEC 1.5KE package details, clamping performance under surge conditions, thermal resistance data, and AEC-Q101-qualified alternatives for automotive-grade design-in.
Technical Context
This TVS diode uses a glass-passivated silicon junction optimized for fast transient response (<1 ns) and low incremental surge resistance. Its unidirectional polarity enables cathode-referenced clamping on positive-going transients, with a maximum reverse leakage of 1000 µA at 5.8 V stand-off voltage (VWM).
The device complies with JEDEC case style 1.5KE and supports soldering per J-STD-002 and JESD 22-B102. It is RoHS-compliant (E3 suffix) and AEC-Q101 qualified (HE3 suffix), with thermal resistance RθJA = 75 °C/W and RθJL = 15.4 °C/W.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 6.45 V / 7.14 V at 10 mA - defines precise clamping onset threshold for overvoltage detection |
| VWM | 5.8 V - maximum continuous reverse operating voltage before leakage exceeds 1000 µA |
| VC @ IPPM | 10.5 V at 143 A - clamped voltage during 1500 W surge, limiting stress on downstream ICs |
| PPPM | 1500 W (10/1000 µs waveform) - peak surge energy handling capacity for lightning/inductive spike suppression |
| TJ range | –55 °C to +175 °C - enables deployment in under-hood automotive and industrial high-temp environments |
| RθJL | 15.4 °C/W - low junction-to-lead thermal resistance supports reliable power dissipation without heatsink |
| IFSM | 200 A (8.3 ms half-sine) - surge current rating for unidirectional forward conduction events |
Pinout & Package
Package: JEDEC-standard 1.5KE molded epoxy case (DO-201AD), axial-leaded, matte tin-plated leads. Dimensions: 5.3 mm × 5.3 mm × 9.5 mm (L × W × H), lead spacing 9.5 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference terminal | Connected to ground or low-potential node; conducts during negative transients in bidirectional variants (not applicable here) |
| Cathode | High-side clamping terminal | Marked with color band; connected to protected line; sinks surge current to ground when VIN > VBR |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Enables stable VBR tolerance and long-term reliability under thermal cycling and humidity |
| 1500 W peak pulse power | Withstands IEC 61000-4-5 Level 4 surges (4 kV/2 Ω) on 12 V DC rails without failure |
| AEC-Q101 qualification | Validated for automotive applications including engine control, body electronics, and ADAS sensor interfaces |
| Low clamping ratio (VC/VBR ≈ 1.47) | Minimizes overvoltage margin between clamping and protected IC's absolute maximum rating |
| 10/1000 µs waveform compliance | Matches industry-standard lightning surge test profile for industrial and telecom infrastructure |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 5 V or 12 V supply inputs in engine control units (ECUs) against load dump and alternator ripple. IC Role / Device Role: Primary clamping element placed between input rail and ground, shunting surge energy away from LDOs and microcontrollers. Use Value: Limits transient voltage to ≤10.5 V, preventing latch-up or gate oxide damage in downstream 12 V-tolerant ICs. | Use Scenario: Safeguarding analog front-end inputs of pressure/temperature sensors in factory automation systems exposed to relay coil flyback. IC Role / Device Role: Fast-response overvoltage clamp on sensor signal lines (e.g., 4–20 mA loop or 0–5 V output). Use Value: Sub-1 ns response ensures clamping occurs before sensitive op-amps or ADCs experience destructive overvoltage. |
| Telecom DC Power Input Protection | Consumer Device USB Port ESD/Surge Protection |
Use Scenario: Secondary surge protection on –48 V or +24 V telecom power feeds entering base station equipment. IC Role / Device Role: Standoff-rated TVS placed upstream of DC/DC converters to absorb induced lightning surges per ITU-T K.20/K.21. Use Value: 1500 W rating handles multi-kA surges while maintaining <5.8 V reverse standoff to avoid false triggering. | Use Scenario: Overvoltage hardening of USB VBUS lines in smart home hubs subjected to accidental AC mains contact. IC Role / Device Role: Unidirectional clamp referenced to system ground, absorbing positive transients on 5 V supply path. Use Value: Clamps to 10.5 V within nanoseconds, protecting USB controller ICs rated for 6 V absolute maximum. |
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-E3/52 | Lower PPPM (600 W), smaller SMB package (3.6 mm × 4.5 mm), VC = 11.2 V @ 53.3 A | Better suited for space-constrained PCBs; insufficient for 1500 W IEC 61000-4-5 Level 4 testing | Select when board area is critical and surge requirements are ≤600 W (e.g., consumer USB ports) |
| 1.5KE6.8AHE3_B | Same 1.5KE package and electrical specs; AEC-Q101 qualified with revision code B; identical VBR, VC, and PPPM | Approved for automotive production; same footprint and performance but with full automotive traceability and qualification documentation | Choose for OEM automotive designs requiring AEC-Q101 certification and lot-level PPAP support |
Compared with 1.5KE6.8CHE3/73, SMBJ6.8A-E3/52 trades surge robustness for compactness, while 1.5KE6.8AHE3_B provides identical protection performance with formal automotive qualification-enabling drop-in use where AEC-Q101 compliance is mandatory.
Availability
1.5KE6.8CHE3/73 is available at Aetrix Electronics and suitable for automotive ECU power rails, industrial sensor interface circuits, and telecom DC input stages requiring stable component supply and consistent surge performance across production batches.
Supply support for 1.5KE6.8CHE3/73 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 ruggedized performance.
The 1.5KE series was engineered for high-energy transient suppression in harsh environments, targeting automotive, industrial, and telecom infrastructure where sustained surge immunity and thermal stability are non-negotiable.
FAQ
What is the breakdown voltage tolerance of the 1.5KE6.8CHE3/73?
The 1.5KE6.8CHE3/73 has a specified breakdown voltage range of 6.45 V to 7.14 V at 10 mA test current, representing ±5% tolerance around the nominal 6.8 V rating. This tight VBR window ensures predictable clamping onset across manufacturing lots and temperature extremes, critical for coordinating with downstream IC overvoltage thresholds in designs using the 1.5KE6.8CHE3/73.
Is the 1.5KE6.8CHE3/73 RoHS compliant and halogen-free?
Yes, the 1.5KE6.8CHE3/73 carries the "E3" suffix, indicating full RoHS compliance per Directive 2011/65/EU and halogen-free status per IEC 61249-2-21. The molding compound meets UL 94 V-0 flammability rating, and terminals are matte tin-plated per J-STD-002, confirming suitability for lead-free reflow and high-reliability commercial applications using the 1.5KE6.8CHE3/73.
Does the 1.5KE6.8CHE3/73 meet AEC-Q101 qualification?
No-the 1.5KE6.8CHE3/73 is commercial-grade only. AEC-Q101 qualification applies to variants with the "HE3" suffix (e.g., 1.5KE6.8AHE3_B). The "CHE3/73" designation indicates RoHS-compliant commercial packaging (tape-and-reel, 1400 pcs per reel) but no automotive qualification. For automotive use, specify 1.5KE6.8AHE3_B instead of 1.5KE6.8CHE3/73.
What is the maximum clamping voltage of the 1.5KE6.8CHE3/73 under surge conditions?
The 1.5KE6.8CHE3/73 exhibits a maximum clamping voltage (VC) of 10.5 V when subjected to its peak pulse current (IPPM) of 143 A under the standard 10/1000 µs waveform. This value is measured at TA = 25 °C and defines the upper voltage limit imposed on protected circuitry during worst-case surge events, directly informing safe margin design for ICs downstream of the 1.5KE6.8CHE3/73.
Can the 1.5KE6.8CHE3/73 be used in bidirectional configurations?
No-the 1.5KE6.8CHE3/73 is a unidirectional TVS diode, identifiable by its cathode band marking. Bidirectional variants use the "CA" suffix (e.g., 1.5KE6.8CA). Using the 1.5KE6.8CHE3/73 in bidirectional applications would leave negative-going transients unprotected; always verify polarity designation before placement, especially when substituting for or comparing with CA-series devices like 1.5KE6.8CA.
1.5KE6.8CHE3/73 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-201AA, DO-27, Axial
- Series:
- TransZorb®
- Packaging:
- Tape & Box (TB)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 5.5V
- Voltage - Breakdown (Min):
- 6.12V
- Voltage - Clamping (Max) @ Ipp:
- 10.8V
- Current - Peak Pulse (10/1000µs):
- 139A
- 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
1.5KE6.8CHE3/73 FAQ
1.How can I place an order for 1.5KE6.8CHE3/73 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE6.8CHE3/73 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 1.5KE6.8CHE3/73 reliable?
The price and inventory of 1.5KE6.8CHE3/73 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE6.8CHE3/73 is usually 5 days.
3.What payment methods are accepted for 1.5KE6.8CHE3/73?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE6.8CHE3/73 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE6.8CHE3/73?
1.5KE6.8CHE3/73 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE6.8CHE3/73 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 1.5KE6.8CHE3/73?
For technical support, including 1.5KE6.8CHE3/73 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE6.8CHE3/73 requirements.
6.How does Aetrix verify that 1.5KE6.8CHE3/73 is sourced from the original manufacturer or authorized distributors?
All 1.5KE6.8CHE3/73 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 1.5KE6.8CHE3/73 meets industry standards.
7.What is the process for return or replacement of 1.5KE6.8CHE3/73?
All 1.5KE6.8CHE3/73 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE6.8CHE3/73, 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 1.5KE6.8CHE3/73 part is unused and in its original packaging.
Return procedure for 1.5KE6.8CHE3/73:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE6.8CHE3/73 Tags
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