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Vishay General Semiconductor - Diodes Division 1.5KE68CHE3/54
- Part No.:
- 1.5KE68CHE3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE68CHE3/54.pdf
- Description:
- TVS DIODE 55.1VWM 98VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:9,302
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Product details
Overview
1.5KE68CHE3/54 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 working peak reverse 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 ECUs, industrial PLC I/O modules, and telecom power supplies.
For engineers reviewing the 1.5KE68CHE3/54 datasheet, 1.5KE68CHE3/54 pinout, 1.5KE68CHE3/54 application, or 1.5KE68CHE3/54 equivalent, this page delivers verified electrical parameters, JEDEC 1.5KE package details, clamping behavior under transient stress, thermal derating curves, and AEC-Q101-qualified alternatives for automotive-grade design-in.
Technical Context
This device operates as a silicon avalanche diode with glass-passivated junction, delivering sub-nanosecond response time (<1 ns) and low incremental surge resistance to clamp fast transients induced by inductive switching or ESD. Its unidirectional polarity enables integration into DC-biased circuits where reverse conduction must be blocked until breakdown threshold is exceeded.
The 1.5KE68CHE3/54 is rated for 175 °C maximum junction temperature and exhibits a +0.104 %/°C temperature coefficient of VBR, enabling predictable voltage drift across automotive and industrial ambient ranges. It supports 200 A non-repetitive forward surge current (8.3 ms half-sine) and maintains stable clamping up to 1000 µs pulse width per JEDEC standard.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 64.6 V / 71.4 V - Ensures reliable turn-on above normal operating voltage while avoiding false triggering during line ripple or load transients. |
| VWM | 58.1 V - Maximum continuous reverse voltage the device blocks without leakage exceeding 1 µA; sets safe margin below VBR. |
| IPPM | 16.3 A - Peak current it safely shunts during a 10/1000 µs surge; directly determines PCB trace sizing and fuse coordination. |
| VC @ IPPM | 92.0 V - Clamped voltage seen by protected IC during full-rated surge; defines maximum stress on downstream components. |
| PPPM | 1500 W - Peak transient energy handling capacity; validates suitability for ISO 7637-2 Pulse 1/2a/5a and IEC 61000-4-5 Level 3/4 events. |
| TJ max. | 175 °C - Enables operation in under-hood automotive environments and high-temperature industrial enclosures without thermal shutdown. |
| Package | JEDEC DO-201AD (Case Style 1.5KE) - Standard axial-leaded through-hole package with 0.375" lead length; compatible with legacy wave-solder processes. |
Pinout & Package
1.5KE68CHE3/54 uses the JEDEC DO-201AD axial package (Case Style 1.5KE), with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102. The cathode is marked by a color band on the body end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference terminal | Connected to circuit ground or lowest potential node; completes clamping path during reverse transient. |
| Cathode | High-side surge input terminal | Connected to protected line (e.g., 48 V rail or CAN_H); conducts avalanche current when VAK exceeds VBR. |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Enables stable, repeatable avalanche characteristics over 1000+ surge events without parameter drift or degradation. |
| 1500 W peak pulse power (10/1000 µs) | Supports robust protection against severe load dump and lightning-induced surges per ISO 16750-2 and IEC 61000-4-5. |
| Sub-nanosecond response time | Clamps transients before sensitive logic or analog circuitry experiences overvoltage stress, preventing latch-up or gate oxide rupture. |
| AEC-Q101 qualified (HE3 suffix) | Validated for automotive applications including engine control, ADAS power domains, and infotainment supply rails. |
| RoHS-compliant, JESD 201 Class 1A whisker test (E3) | Ensures long-term reliability in high-humidity, high-vibration environments without tin whisker growth risk. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V/24 V/48 V power inputs in engine control units against ISO 7637-2 load dump pulses and alternator overshoot. IC Role / Device Role / Timing Role: Primary clamping element placed upstream of DC-DC converters and microcontroller power pins. Use Value: Limits transient voltage to ≤92.0 V, preventing damage to 3.3 V/5 V LDOs and MCU internal regulators during 120 V/200 ms load dump events. |
Use Scenario: Safeguarding analog sensor outputs (e.g., pressure, temperature) in factory automation systems exposed to relay coil flyback and motor drive noise. IC Role / Device Role / Timing Role: Unidirectional TVS placed between sensor output and ADC input, referenced to system ground. Use Value: Clamps 1 kV/500 A 10/1000 µs surges to <92.0 V within <1 ns, preserving signal integrity and preventing ADC saturation or front-end op-amp damage. |
| Telecom DC Power Input Protection | Consumer Power Adapter Output Protection |
Use Scenario: Securing -48 V DC input of telecom base station cards against lightning-induced surges on remote feeder lines. IC Role / Device Role / Timing Role: First-line transient suppressor on primary power entry, coordinated with upstream fuses and secondary filtering. Use Value: Absorbs up to 1500 W surge energy while maintaining VC ≤ 92.0 V, ensuring uninterrupted operation during R.E.A. P.E. 60-compliant lightning strikes. |
Use Scenario: Adding secondary overvoltage protection on USB-C PD adapter 20 V output rails to guard against regulator failure or feedback loop loss. IC Role / Device Role / Timing Role: Unidirectional TVS connected between output and ground, sized to trigger before downstream USB-PD controller overvoltage lockout. Use Value: Activates at 64.6–71.4 V to clamp faulted output to 92.0 V, protecting connected devices from catastrophic overvoltage beyond USB PD specification limits. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ64A-E3/52 | Lower PPPM (600 W), smaller SMB package (surface-mount), lower VC (103 V), same VBR range (60.8–67.2 V). | Used where board space is constrained and surge threat level is moderate (e.g., consumer USB ports). | Select when footprint reduction and automated assembly outweigh need for 1500 W capability. |
| 1.5KE68AHE3_B | Identical electrical specs and DO-201AD package; differs only in AEC-Q101 qualification revision code ("B") and tape/reel packaging (C vs. 54). | Direct drop-in for automotive programs requiring latest AEC-Q101 revision compliance. | Choose for new automotive designs requiring documented AEC-Q101 requalification cycle evidence. |
Compared with 1.5KE68CHE3/54, SMBJ64A-E3/52 trades 60% peak power for SMT compatibility and tighter layout, while 1.5KE68AHE3_B provides identical protection with updated automotive qualification documentation-neither requires PCB redesign, but only the latter carries full AEC-Q101 revision B certification.
Availability
1.5KE68CHE3/54 is available at Aetrix Electronics and suitable for automotive ECU power protection, industrial sensor interface hardening, and telecom DC input safeguarding requiring stable component supply across multi-year production cycles.
Supply support for 1.5KE68CHE3/54 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 passive components with emphasis on reliability, power handling, and automotive qualification.
The 1.5KE series was engineered for high-energy transient suppression in harsh environments, targeting automotive, industrial, and telecom infrastructure where robustness against load dump, ESD, and lightning surges is mission-critical.
FAQ
What is the breakdown voltage tolerance for 1.5KE68CHE3/54?
The 1.5KE68CHE3/54 has a guaranteed breakdown voltage range of 64.6 V to 71.4 V at 1.0 mA test current (IT). This ±5% tolerance ensures consistent clamping behavior across production lots and allows designers to set appropriate safety margins relative to system operating voltage. The value is measured per JEDEC standard and confirmed in Vishay's 88301 datasheet revision 09-Aug-2022.
Is 1.5KE68CHE3/54 RoHS compliant and lead-free?
Yes, 1.5KE68CHE3/54 is RoHS compliant and lead-free. The "E3" suffix explicitly denotes compliance with EU RoHS Directive 2011/65/EU and meets JESD 201 Class 1A whisker testing requirements. Its matte tin-plated leads are solderable per J-STD-002 and JESD 22-B102, and the molded epoxy case satisfies UL 94 V-0 flammability rating.
Does 1.5KE68CHE3/54 meet AEC-Q101 for automotive use?
Yes, 1.5KE68CHE3/54 is AEC-Q101 qualified. The "HE3" in the part number confirms qualification per AEC-Q101-001 Rev D, validated for temperature cycling, humidity bias, and surge endurance. It is approved for use in automotive powertrain, chassis, and body electronics where transient immunity is critical, as documented in Vishay's 88301 datasheet footnote (2).
What is the clamping voltage of 1.5KE68CHE3/54 at its rated peak pulse current?
The 1.5KE68CHE3/54 clamps to a maximum of 92.0 V at its rated peak pulse current of 16.3 A (10/1000 µs waveform). This VC value defines the upper voltage limit imposed on protected circuitry during worst-case surge events and is essential for verifying that downstream components remain within absolute maximum ratings.
Can 1.5KE68CHE3/54 be used in bidirectional configurations?
No, 1.5KE68CHE3/54 is unidirectional only. Its part number lacks the "CA" suffix required for bidirectional variants (e.g., 1.5KE68CA). Bidirectional types are offered only from 1.5KE6.8CA to 1.5KE220CA per Vishay's datasheet note; 1.5KE68CHE3/54 has a cathode band and conducts only in reverse breakdown, making it unsuitable for AC or dual-polarity signal line protection.
1.5KE68CHE3/54 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:
- 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
1.5KE68CHE3/54 FAQ
1.How can I place an order for 1.5KE68CHE3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE68CHE3/54 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 1.5KE68CHE3/54 reliable?
The price and inventory of 1.5KE68CHE3/54 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE68CHE3/54 is usually 5 days.
3.What payment methods are accepted for 1.5KE68CHE3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE68CHE3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE68CHE3/54?
1.5KE68CHE3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE68CHE3/54 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 1.5KE68CHE3/54?
For technical support, including 1.5KE68CHE3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE68CHE3/54 requirements.
6.How does Aetrix verify that 1.5KE68CHE3/54 is sourced from the original manufacturer or authorized distributors?
All 1.5KE68CHE3/54 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 1.5KE68CHE3/54 meets industry standards.
7.What is the process for return or replacement of 1.5KE68CHE3/54?
All 1.5KE68CHE3/54 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE68CHE3/54, 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 1.5KE68CHE3/54 part is unused and in its original packaging.
Return procedure for 1.5KE68CHE3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE68CHE3/54 Tags
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