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Vishay General Semiconductor - Diodes Division 1.5KE68HE3/54
- Part No.:
- 1.5KE68HE3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE68HE3/54.pdf
- Description:
- TVS DIODE 55.1VWM 98VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:3,812
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Product details
Overview
1.5KE68HE3/54 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 64.6 V minimum breakdown voltage (VBR), 58.1 V maximum standoff voltage (VWM), 92.0 V clamping voltage (VC) at 16.3 A peak pulse current, 1500 W peak pulse power rating (10/1000 µs), and operates across –55 °C to +175 °C junction temperature range - deployed in automotive power supply inputs and industrial sensor interface protection.
For engineers reviewing the 1.5KE68HE3/54 datasheet, 1.5KE68HE3/54 pinout, 1.5KE68HE3/54 application, or 1.5KE68HE3/54 equivalent, this page delivers verified electrical parameters, AEC-Q101 qualification status, thermal resistance (RθJA = 75 °C/W), JEDEC 1.5KE package dimensions, and real-world clamping behavior under lightning-surge transients per IEC 61000-4-5.
Technical Context
This unidirectional TVS diode uses a glass-passivated silicon junction optimized for sub-nanosecond response (<1 ns) to fast-rising transients. Its clamping action begins at 64.6 V (min VBR) and limits voltage to ≤92.0 V at 16.3 A (10/1000 µs waveform), with low incremental surge resistance ensuring minimal overshoot during ESD or inductive switching events.
Rated for 1500 W peak pulse power and 6.5 W steady-state dissipation on infinite heatsink, it supports repetitive surge duty cycles up to 0.01 % and withstands 200 A non-repetitive forward surge (8.3 ms half-sine). The HE3 suffix confirms RoHS compliance and AEC-Q101 qualification per revision B.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 64.6 V / 71.4 V at 1.0 mA test current - defines precise voltage threshold where clamping initiates |
| VWM | 58.1 V maximum - ensures reliable blocking of normal operating voltage with margin before breakdown |
| VC @ IPPM | 92.0 V at 16.3 A peak pulse - actual worst-case rail voltage seen by protected IC during surge |
| PPPM | 1500 W (10/1000 µs waveform) - capability to absorb lightning-induced surges without failure |
| IFSM | 200 A (8.3 ms half-sine) - robustness against high-energy inductive turn-off spikes |
| TJ range | –55 °C to +175 °C - enables use in under-hood automotive and industrial ambient environments |
| RθJA | 75 °C/W - thermal performance baseline for PCB copper area and heatsinking requirements |
Pinout & Package
Package: JEDEC 1.5KE molded epoxy case (Case Style 1.5KE), axial leaded, RoHS-compliant matte tin plating, UL 94 V-0 rated molding compound. Dimensions: 5.3 mm diameter × 9.5 mm length, lead spacing 9.5 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point during forward conduction | Connected to ground or low-side return path in unidirectional clamp configuration |
| Cathode | Current exit point; marked with color band | Connected to protected line (e.g., 48 V rail or CAN_H); reverse-biased during normal operation |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Enables stable VBR tolerance (±5 %) and long-term reliability under thermal cycling |
| AEC-Q101 qualified (HE3_B revision) | Validated for automotive powertrain and body electronics per stress test requirements |
| 1500 W peak pulse power (10/1000 µs) | Meets IEC 61000-4-5 Level 4 (4 kV) surge immunity when properly mounted |
| Sub-nanosecond response time | Clamps transients before sensitive ICs experience overstress - critical for MCU I/O protection |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising ESD events (e.g., ISO 10605 150 pF/330 Ω) |
Applications
| Automotive Power Input Protection | Industrial Sensor Signal Line Clamp |
|---|---|
Use Scenario: 12 V/24 V battery-fed ECUs exposed to load dump (ISO 16750-2) and jump-start transients. IC Role / Device Role / Timing Role: Primary shunt clamp placed between power rail and chassis ground; activates within <1 ns upon overvoltage detection. Use Value: Limits rail voltage to ≤92.0 V during 120 V/400 ms load dump, protecting downstream PMICs and microcontrollers. |
Use Scenario: Analog output lines (e.g., 4–20 mA current loop) in factory automation sensors subjected to field wiring ESD. IC Role / Device Role / Timing Role: Unidirectional TVS connected anode-to-ground, cathode-to-signal line; suppresses ±8 kV contact ESD per IEC 61000-4-2. Use Value: Clamps transient to <92.0 V before op-amp input stage exceeds absolute maximum rating (AMR). |
| Telecom DC Power Feeds | Consumer Device USB Port Surge Guard |
Use Scenario: -48 V telecom rectifier outputs feeding base station radios vulnerable to lightning-induced surges on outdoor cabling. IC Role / Device Role / Timing Role: Front-end TVS on DC input stage; coordinated with upstream MOVs for staged energy absorption. Use Value: Handles 1500 W surge energy while maintaining VC below radio LDO dropout threshold (e.g., 52 V min input). |
Use Scenario: USB Type-A port on smart home hubs exposed to user-handling ESD and hot-plug transients. IC Role / Device Role / Timing Role: Cathode tied to VBUS, anode to ground; provides first-line defense before internal USB switch/PHY. Use Value: Prevents latch-up in USB transceivers by limiting VBUS overshoot to ≤92.0 V during 15 kV air discharge events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ64A | Lower PPPM (600 W), smaller SMB package (3.5 mm × 4.5 mm), VC = 103 V @ 5.8 A | Not AEC-Q101 qualified; suitable for space-constrained consumer designs but insufficient for automotive load dump | Select SMBJ64A only for cost-sensitive, non-automotive applications with lower surge energy requirements. |
| 1.5KE68A-E3/54 | Same electrical specs and 1.5KE package, but lacks AEC-Q101 qualification (E3 vs HE3_B) | Acceptable for commercial/industrial use; not approved for automotive under-hood deployment per OEM requirements | Choose 1.5KE68A-E3/54 if AEC-Q101 is not mandated and budget constraints apply. |
Compared with 1.5KE68HE3/54, SMBJ64A trades surge robustness and automotive qualification for compact size and lower cost, while 1.5KE68A-E3/54 matches form/fit/function but omits AEC-Q101 validation - making 1.5KE68HE3/54 the sole choice for production automotive systems requiring full qualification traceability.
Availability
1.5KE68HE3/54 is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor interfaces, telecom DC power feeds, and consumer USB port protection requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for 1.5KE68HE3/54 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 high-reliability diodes, MOSFETs, and passive components for automotive, industrial, and computing markets.
The 1.5KE series was engineered specifically for high-energy transient suppression in harsh-environment power systems, emphasizing AEC-Q101 qualification, stable clamping under thermal stress, and compatibility with automated SMT and through-hole assembly.
FAQ
What is the clamping voltage of the 1.5KE68HE3/54 under a 10/1000 µs surge?
The 1.5KE68HE3/54 clamps to a maximum of 92.0 V at its rated peak pulse current of 16.3 A (10/1000 µs waveform). This value is measured per JEDEC standards and represents the worst-case voltage imposed on the protected circuit during surge conditions - critical for verifying compatibility with downstream IC absolute maximum ratings.
Is the 1.5KE68HE3/54 qualified for automotive applications?
Yes, the 1.5KE68HE3/54 carries the HE3 suffix indicating RoHS compliance and AEC-Q101 qualification per revision B. It has passed stress tests including high-temperature operating life, temperature cycling, and unbiased highly accelerated stress testing - making it suitable for under-hood automotive modules per OEM specifications.
How does the 1.5KE68HE3/54 differ from the standard 1.5KE68A-E3/54?
The 1.5KE68HE3/54 differs from 1.5KE68A-E3/54 solely in qualification status: HE3 denotes AEC-Q101 qualification (revision B), while E3 indicates commercial-grade only. All electrical parameters, package, and pinout are identical - the HE3 variant adds traceable test reports and process controls required for automotive production.
What is the standoff voltage (VWM) rating for the 1.5KE68HE3/54?
The 1.5KE68HE3/54 has a maximum standoff voltage (VWM) of 58.1 V, meaning it remains in high-impedance blocking mode for all applied voltages ≤58.1 V. This provides ≥5 % margin below the minimum breakdown voltage (64.6 V), ensuring no leakage-induced power loss or false triggering during nominal 48 V or 24 V system operation.
Can the 1.5KE68HE3/54 be used in bidirectional configurations?
No, the 1.5KE68HE3/54 is a unidirectional TVS diode, identifiable by its cathode band marking. Bidirectional variants require the "CA" suffix (e.g., 1.5KE68CA). Using this part in bidirectional applications would result in forward conduction during negative transients, causing failure - always verify polarity designation before layout placement.
1.5KE68HE3/54 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:
- 1
- Bidirectional Channels:
- -
- 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
1.5KE68HE3/54 FAQ
1.How can I place an order for 1.5KE68HE3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE68HE3/54 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 1.5KE68HE3/54 reliable?
The price and inventory of 1.5KE68HE3/54 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE68HE3/54 is usually 5 days.
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Once your 1.5KE68HE3/54 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 1.5KE68HE3/54?
For technical support, including 1.5KE68HE3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE68HE3/54 requirements.
6.How does Aetrix verify that 1.5KE68HE3/54 is sourced from the original manufacturer or authorized distributors?
All 1.5KE68HE3/54 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 1.5KE68HE3/54 meets industry standards.
7.What is the process for return or replacement of 1.5KE68HE3/54?
All 1.5KE68HE3/54 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE68HE3/54, 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 1.5KE68HE3/54 part is unused and in its original packaging.
Return procedure for 1.5KE68HE3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE68HE3/54 Tags
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