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Vishay General Semiconductor - Diodes Division 1.5KE75HE3/54
- Part No.:
- 1.5KE75HE3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE75HE3/54.pdf
- Description:
- TVS DIODE 60.7VWM 109VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:3,484
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Product details
Overview
1.5KE75HE3/54 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 71.3 V to 78.8 V breakdown voltage (VBR), 64.1 V standoff voltage (VWM), 104 V clamping voltage at 14.6 A peak pulse current, 1500 W peak pulse power rating with 10/1000 µs waveform, and operates across -55 °C to +175 °C junction temperature range - used in automotive power supply input stages and industrial sensor interface protection.
For engineers reviewing the 1.5KE75HE3/54 datasheet, 1.5KE75HE3/54 pinout, 1.5KE75HE3/54 application, or 1.5KE75HE3/54 equivalent, this part delivers verified AEC-Q101 qualification, RoHS-compliant matte tin-plated leads, JESD 201 Class 2 whisker resistance, and UL 94 V-0 molded epoxy packaging - critical for high-reliability automotive and industrial surge protection design.
Technical Context
This unidirectional TVS diode uses a glass passivated silicon junction to achieve sub-nanosecond response time (<1 ns) and low incremental surge resistance. Its clamping behavior is characterized by a 104 V maximum clamping voltage at 14.6 A IPPM under 10/1000 µs transients, with thermal resistance of 15.4 °C/W (junction-to-lead) enabling robust surge handling without external heatsinking in typical PCB layouts.
The device complies with ANSI/IEEE C62.35 surge standards and supports repetitive surge duty cycles up to 0.01 %, making it suitable for protection against inductive switching spikes and lightning-induced surges on 24 V and 48 V systems. Its 3.5 V forward voltage at 100 A ensures minimal conduction loss during fault events.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 71.3 V / 78.8 V - defines precise voltage threshold at which clamping initiates under 1 mA test current |
| VWM | 64.1 V - maximum continuous operating voltage before leakage exceeds 1 µA; sets safe DC rail margin |
| VC @ IPPM | 104 V - clamped voltage seen by protected circuit during 14.6 A transient, limiting stress on downstream ICs |
| PPPM | 1500 W - peak surge power dissipation capability with 10/1000 µs waveform, enabling robust lightning strike immunity |
| IFSM | 200 A - non-repetitive forward surge current rating (8.3 ms half-sine), supporting high-energy inductive kickback absorption |
| TJ max. | +175 °C - extended junction temperature rating allows operation in under-hood automotive environments |
| Package | Case Style 1.5KE - axial-leaded DO-201AD package with 0.375" lead length, UL 94 V-0 compliant epoxy body |
Pinout & Package
1.5KE75HE3/54 uses the standard DO-201AD (Case Style 1.5KE) axial-leaded package. The cathode is marked by a color band on the body; polarity must be observed during PCB placement to ensure correct unidirectional clamping orientation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference terminal | Connected to ground or low-voltage return path; completes clamping loop during overvoltage events |
| Cathode | High-side surge input terminal | Connected to protected line (e.g., 24 V rail); absorbs positive transients by conducting to ground |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control units and body electronics requiring reliability under thermal cycling and vibration |
| Glass passivated junction | Ensures stable VBR tolerance and long-term leakage performance across temperature and humidity stress |
| 1500 W peak pulse power | Supports IEC 61000-4-5 Level 4 (4 kV) surge immunity when properly laid out with low-inductance grounding |
| JESD 201 Class 2 whisker resistance | Enables reliable solder joint integrity in high-temperature, long-life industrial deployments without tin whisker growth risk |
| UL 94 V-0 molding compound | Provides flame-retardant encapsulation required for safety-critical automotive and industrial enclosures |
Applications
| Automotive Power Input Protection | Industrial Sensor Signal Line Protection |
|---|---|
Use Scenario: Protecting 24 V battery-fed ECUs from load dump and alternator ripple transients. IC Role / Device Role / Timing Role: Primary shunt clamping device placed at power entry point before DC-DC converters and microcontrollers. Use Value: Limits transient voltage to ≤104 V, preventing damage to 36 V-rated input stages while surviving 200 A surge currents. |
Use Scenario: Safeguarding analog outputs of pressure/temperature sensors in factory automation PLC modules. IC Role / Device Role / Timing Role: Unidirectional TVS placed between sensor output and ADC input to clamp ESD and cable discharge events. Use Value: Sub-1 ns response ensures clamping occurs before sensitive op-amps or SAR ADCs experience overstress, preserving measurement integrity. |
| Telecom DC Power Feeds | Motor Drive Control Board Inputs |
Use Scenario: Securing 48 V PoE-powered network switches against induced surges on outdoor cabling. IC Role / Device Role / Timing Role: Standoff-rated TVS on PSE side of Ethernet port to absorb longitudinal surges coupled onto data pairs. Use Value: 64.1 V VWM allows uninterrupted operation during normal 48–57 V PoE range while clamping >100 V transients. |
Use Scenario: Shielding gate driver enable signals from inductive coupling during IGBT/MOSFET switching in HVAC inverters. IC Role / Device Role / Timing Role: Low-capacitance unidirectional TVS on logic-level control lines interfacing with isolated gate drivers. Use Value: 104 V clamping prevents false triggering or latch-up in level-shifted control circuits exposed to fast dv/dt noise. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ75A | DO-214AA package, 75 V VBR, 1000 W PPPM, lower surge current (12.3 A) | Surface-mount alternative with smaller footprint but reduced power handling and thermal mass | Select SMBJ75A only when board space is constrained and peak surge energy is ≤1000 W |
| 1.5KE75A-E3/54 | Same 1.5KE package and electrical specs, but commercial-grade (non-AEC-Q101) and JESD 201 Class 1A whisker rating | Approved for industrial/commercial use only; not validated for automotive temperature cycling or lifetime requirements | Choose 1.5KE75A-E3/54 for cost-sensitive non-automotive designs where AEC-Q101 is not mandated |
Compared with 1.5KE75HE3/54, SMBJ75A offers SMT compatibility at lower surge capacity, while 1.5KE75A-E3/54 provides identical form-factor and clamping performance without automotive qualification - enabling trade-offs between reliability assurance, mounting method, and system-level compliance needs.
Availability
1.5KE75HE3/54 is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor interfaces, and telecom power feed applications requiring stable component supply, AEC-Q101 validation, and long-term lifecycle continuity.
Supply support for 1.5KE75HE3/54 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 protection devices with emphasis on reliability, efficiency, and application-specific optimization.
The 1.5KE series was engineered for high-energy transient suppression in harsh environments - targeting automotive, industrial, and telecom infrastructure where failure due to voltage surges must be eliminated through proven silicon robustness and standardized qualification.
FAQ
What is the clamping voltage of the 1.5KE75HE3/54 under maximum rated surge current?
The 1.5KE75HE3/54 has a maximum clamping voltage (VC) of 104 V at its rated peak pulse current (IPPM) of 14.6 A, measured using the standard 10/1000 µs waveform. This value is guaranteed per Vishay's datasheet Document Number 88301 and defines the upper voltage limit imposed on protected circuitry during surge events. Engineers must verify layout inductance to ensure actual clamping remains within this specification.
Is the 1.5KE75HE3/54 suitable for automotive applications?
Yes, the 1.5KE75HE3/54 is AEC-Q101 qualified per Vishay documentation, confirming its suitability for automotive applications including engine control modules, body electronics, and ADAS power supplies. Its -55 °C to +175 °C operating range, JESD 201 Class 2 whisker resistance, and UL 94 V-0 package meet key automotive reliability requirements - unlike non-HE3 variants such as 1.5KE75A-E3/54.
How does the 1.5KE75HE3/54 differ from the 1.5KE75A-E3/54?
The 1.5KE75HE3/54 differs from the 1.5KE75A-E3/54 in three confirmed ways: it carries AEC-Q101 qualification, meets JESD 201 Class 2 (vs. Class 1A) whisker resistance, and is designated for automotive-grade use. Electrically and physically identical, the HE3 suffix denotes enhanced process controls and testing rigor required for automotive deployment - making 1.5KE75HE3/54 the only version approved for under-hood or safety-critical vehicle systems.
What is the standoff voltage (VWM) of the 1.5KE75HE3/54 and why does it matter?
The 1.5KE75HE3/54 has a maximum working peak reverse voltage (VWM) of 64.1 V, meaning it remains non-conductive below this DC or RMS voltage level with leakage <1 µA. This parameter ensures reliable operation on 48 V nominal systems (e.g., telecom or industrial 24/48 V rails) while providing sufficient margin above normal operating voltage to avoid false triggering during ripple or transients within specification.
Can the 1.5KE75HE3/54 be used in bidirectional configurations?
No, the 1.5KE75HE3/54 is a unidirectional TVS diode, indicated by the "A" suffix (not "CA"). Bidirectional versions in the same family - such as 1.5KE75CA - exist but have different internal construction and symmetric clamping behavior. Using 1.5KE75HE3/54 in AC or floating-line applications would result in improper protection during negative transients, as it conducts only in reverse bias.
1.5KE75HE3/54 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):
- 60.7V
- Voltage - Breakdown (Min):
- 67.5V
- Voltage - Clamping (Max) @ Ipp:
- 109V
- Current - Peak Pulse (10/1000µs):
- 13.9A
- 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
1.5KE75HE3/54 FAQ
1.How can I place an order for 1.5KE75HE3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE75HE3/54 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 1.5KE75HE3/54 reliable?
The price and inventory of 1.5KE75HE3/54 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE75HE3/54 is usually 5 days.
3.What payment methods are accepted for 1.5KE75HE3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE75HE3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE75HE3/54?
1.5KE75HE3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE75HE3/54 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 1.5KE75HE3/54?
For technical support, including 1.5KE75HE3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE75HE3/54 requirements.
6.How does Aetrix verify that 1.5KE75HE3/54 is sourced from the original manufacturer or authorized distributors?
All 1.5KE75HE3/54 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 1.5KE75HE3/54 meets industry standards.
7.What is the process for return or replacement of 1.5KE75HE3/54?
All 1.5KE75HE3/54 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE75HE3/54, 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 1.5KE75HE3/54 part is unused and in its original packaging.
Return procedure for 1.5KE75HE3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE75HE3/54 Tags
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