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Vishay General Semiconductor - Diodes Division 1.5KE68CHE3/73
- Part No.:
- 1.5KE68CHE3/73
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE68CHE3/73.pdf
- Description:
- TVS DIODE 55.1VWM 98VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:5,122
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Product details
Overview
1.5KE68CHE3/73 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 to 71.4 V breakdown voltage (VBR), 58.1 V maximum standoff voltage (VWM), 1500 W peak pulse power (10/1000 µs), 16.3 A peak pulse current (IPPM), and clamps to ≤92.0 V at rated surge. It is used in automotive power supply inputs, industrial sensor interfaces, and telecom line protection where fast clamping and high surge robustness are required.
For engineers reviewing the 1.5KE68CHE3/73 datasheet, 1.5KE68CHE3/73 pinout, 1.5KE68CHE3/73 application, or 1.5KE68CHE3/73 equivalent, this device delivers verified transient suppression performance with AEC-Q101 qualification, glass-passivated junction reliability, and RoHS-compliant matte tin leads - critical for automotive-grade ESD and lightning surge protection design validation.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector: under normal conditions it presents high impedance (>1 µA leakage at 58.1 V), then switches to low-impedance conduction within <1 ns when transient voltage exceeds VBR. Its unidirectional polarity enables integration into DC-biased circuits without reverse conduction concerns.
It uses a planar passivated silicon junction housed in a molded epoxy case (Case Style 1.5KE), rated for TJ = –55 °C to +175 °C, with thermal resistance RθJA = 75 °C/W and RθJL = 15.4 °C/W. The 1.5KE68CHE3/73 variant carries HE3 suffix indicating AEC-Q101 qualification and JESD 201 Class 2 whisker resistance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 64.6 V / 71.4 V - defines precise clamping onset threshold; ensures reliable triggering above system operating voltage |
| VWM | 58.1 V - maximum continuous working voltage; must exceed nominal rail voltage (e.g., 48 V or 54 V systems) to prevent leakage-induced power loss |
| IPPM | 16.3 A - peak surge current capability with 10/1000 µs waveform; determines survivability against IEC 61000-4-5 Level 4 surges |
| VC @ IPPM | ≤92.0 V - clamped voltage during full-rated surge; sets upper bound on protected circuit stress |
| PPPM | 1500 W - peak pulse power rating; enables single-device protection of 12 V–48 V systems against high-energy transients |
| TJ max | +175 °C - extended junction temperature rating supports under-hood automotive and high-ambient industrial use |
| Leakage @ VWM | 1.0 µA - ultra-low reverse leakage preserves battery life and avoids false triggers in low-power sensor nodes |
Pinout & Package
Package: Case Style 1.5KE - axial-leaded, molded epoxy body (1.0" × 0.285", 25.4 mm × 7.2 mm), UL 94 V-0 rated, matte tin-plated leads compliant with J-STD-002 and JESD 22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference terminal | Connected to ground or lowest-potential node; defines unidirectional conduction path from cathode to anode during surge |
| Cathode | High-side surge input terminal | Connected to protected line (e.g., +12 V rail); color band identifies this end; conducts surge current to ground when VAK > VBR |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Enables stable VBR tolerance (±5 %) and long-term reliability under thermal cycling and humidity exposure |
| AEC-Q101 qualified (HE3 suffix) | Validated for automotive powertrain and chassis applications per stress test requirements including HTOL, TC, and HAST |
| 1500 W peak pulse power (10/1000 µs) | Supports single-device compliance with ISO 7637-2 Pulse 5a (load dump) and IEC 61000-4-5 Combination Wave (1.2/50 µs + 8/20 µs) |
| Clamping time <1 ns | Prevents voltage overshoot beyond IC absolute maximum ratings during fast-rising ESD or switching transients |
| RoHS-compliant, JESD 201 Class 2 whisker resistant | Ensures solder joint integrity and process compatibility in lead-free reflow and wave soldering environments |
Applications
| Automotive Power Input Protection | Industrial Sensor Signal Line Protection |
|---|---|
Use Scenario: Protecting 12 V/24 V vehicle infotainment power inputs against load dump (ISO 7637-2 Pulse 5a) and jump-start transients. IC Role / Device Role / Timing Role: Shunt TVS placed between battery rail and DC-DC converter input to clamp surges before they reach downstream regulators. Use Value: Withstands 1500 W surges up to 16.3 A while limiting clamped voltage to ≤92.0 V - well below typical 100 V input rating of automotive DC-DC controllers. |
Use Scenario: Safeguarding 4–20 mA current-loop sensor outputs in factory automation against induced lightning surges on long cable runs. IC Role / Device Role / Timing Role: Unidirectional TVS connected across sensor output terminals to divert common-mode transients to local ground. Use Value: Ultra-fast <1 ns response prevents latch-up or gate oxide damage in precision op-amps and ADC front-ends exposed to 8/20 µs lightning surges. |
| Telecom DC Power Feeding | Consumer Device USB Port Protection |
Use Scenario: Overvoltage protection on -48 V DC feeding lines in central office equipment subjected to accidental AC cross-connects. IC Role / Device Role / Timing Role: Cathode tied to -48 V rail, anode to ground; clamps positive transients to safe levels while blocking negative excursions. Use Value: 58.1 V standoff allows operation across full -48 V ±10 % range; 92.0 V clamping prevents damage to PoE controllers and Ethernet PHYs. |
Use Scenario: Secondary-level surge protection on USB VBUS lines in portable chargers and docking stations exposed to ESD and hot-plug transients. IC Role / Device Role / Timing Role: Placed upstream of USB power switch to absorb 15 kV HBM ESD events and 10/1000 µs surges from faulty adapters. Use Value: Low 1.0 µA leakage avoids standby current drain; compact axial package fits tight board space near USB connectors. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ64A | DO-214AA package (SMB), 64 V VBR, 1000 W PPPM, 13.7 A IPPM, surface-mount only | Lacks AEC-Q101 qualification; lower surge rating limits use in automotive load dump scenarios | Select SMBJ64A only for space-constrained PCBs where 1000 W suffices and automotive qualification is not required. |
| 1.5KE68A-E3/54 | Same 1.5KE package and electrical specs, but commercial-grade (non-AEC-Q101), E3 suffix only (no HE3) | Not validated for automotive temperature cycling or humidity testing; unsuitable for under-hood deployment | Choose 1.5KE68A-E3/54 for cost-sensitive industrial or consumer applications where AEC-Q101 is unnecessary. |
Compared with SMBJ64A and 1.5KE68A-E3/54, the 1.5KE68CHE3/73 uniquely combines AEC-Q101 qualification, 1500 W surge capacity, and axial-leaded through-hole mounting - making it the only option among the three qualified for automotive power rail protection requiring both high energy handling and extended temperature reliability.
Availability
1.5KE68CHE3/73 is available at Aetrix Electronics and suitable for automotive electronics, industrial sensor interfaces, and telecom power feeding requiring stable component supply, long-lifecycle support, and traceable AEC-Q101-compliant sourcing.
Supply support for 1.5KE68CHE3/73 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, rectifiers, MOSFETs, and protection devices with emphasis on reliability, power efficiency, and automotive-grade qualification.
The 1.5KE series was engineered specifically for high-energy transient suppression in harsh environments - targeting automotive, industrial, and telecom infrastructure where failure due to voltage surges must be eliminated.
FAQ
What is the breakdown voltage tolerance for 1.5KE68CHE3/73?
The 1.5KE68CHE3/73 has a specified breakdown voltage (VBR) range of 64.6 V to 71.4 V at 1.0 mA test current, representing a ±5 % tolerance around the nominal 68 V rating. This tight tolerance ensures consistent clamping behavior across production lots and supports precise system-level overvoltage margining in automotive and industrial designs.
Is 1.5KE68CHE3/73 suitable for bidirectional transient protection?
No, the 1.5KE68CHE3/73 is a unidirectional TVS diode, indicated by the "A" suffix (not "CA"). It conducts only when cathode-to-anode voltage exceeds VBR; it blocks reverse voltage up to –58.1 V. For bidirectional protection, select a part with "CA" suffix such as 1.5KE68CAHE3/73, which clamps symmetrically for AC or floating-line applications.
What does the "HE3/73" suffix mean in 1.5KE68CHE3/73?
The "HE3" denotes RoHS-compliant construction with AEC-Q101 qualification and JESD 201 Class 2 whisker resistance; "73" is Vishay's internal packaging code indicating 13" paper tape and reel, 1400 units per reel. This distinguishes it from commercial-grade E3 variants and confirms suitability for automotive production environments.
How does the clamping voltage of 1.5KE68CHE3/73 compare to its breakdown voltage?
At its rated 16.3 A peak pulse current (IPPM), the 1.5KE68CHE3/73 clamps to ≤92.0 V - a 28.5 V differential above its minimum VBR of 64.6 V. This incremental clamping voltage (ΔVC = 27.4 V) reflects low dynamic impedance, enabling effective energy diversion without excessive voltage overshoot on protected circuits.
Can 1.5KE68CHE3/73 replace 1.5KE68A-E3/54 in existing designs?
Yes, the 1.5KE68CHE3/73 is a direct form-fit-function replacement for 1.5KE68A-E3/54, sharing identical electrical specs, package dimensions, and pinout. The key upgrade is AEC-Q101 qualification and enhanced whisker resistance - no PCB or schematic changes are needed, but qualification testing may be required for automotive release.
1.5KE68CHE3/73 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):
- 55.1V
- Voltage - Breakdown (Min):
- 61.2V
- Voltage - Clamping (Max) @ Ipp:
- 98V
- Current - Peak Pulse (10/1000µs):
- 15.3A
- 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
1.5KE68CHE3/73 FAQ
1.How can I place an order for 1.5KE68CHE3/73 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE68CHE3/73 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 1.5KE68CHE3/73 reliable?
The price and inventory of 1.5KE68CHE3/73 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE68CHE3/73 is usually 5 days.
3.What payment methods are accepted for 1.5KE68CHE3/73?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE68CHE3/73 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE68CHE3/73?
1.5KE68CHE3/73 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE68CHE3/73 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 1.5KE68CHE3/73?
For technical support, including 1.5KE68CHE3/73 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE68CHE3/73 requirements.
6.How does Aetrix verify that 1.5KE68CHE3/73 is sourced from the original manufacturer or authorized distributors?
All 1.5KE68CHE3/73 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 1.5KE68CHE3/73 meets industry standards.
7.What is the process for return or replacement of 1.5KE68CHE3/73?
All 1.5KE68CHE3/73 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE68CHE3/73, 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 1.5KE68CHE3/73 part is unused and in its original packaging.
Return procedure for 1.5KE68CHE3/73:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE68CHE3/73 Tags
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