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Vishay General Semiconductor - Diodes Division 1.5KE75A-E3/54
- Part No.:
- 1.5KE75A-E3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE75A-E3/54.pdf
- Description:
- TVS DIODE 64.1VWM 104VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:1,339
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Product details
Overview
1.5KE75A-E3/54 from Vishay General Semiconductor is a unidirectional Transient Voltage Suppressor (TVS) diode designed for primary overvoltage protection of DC power rails and signal lines. It features a 71.3 V minimum breakdown voltage (VBR), 64.1 V maximum standoff voltage (VWM), 104 V clamping voltage (VC) at 14.6 A peak pulse current, 1500 W peak pulse power rating (10/1000 µs), 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 1.5KE75A-E3/54 datasheet, 1.5KE75A-E3/54 pinout, 1.5KE75A-E3/54 application, or 1.5KE75A-E3/54 equivalent, this page delivers verified electrical parameters, thermal derating behavior, clamping performance under surge conditions, RoHS-compliant packaging details, and direct alternative part comparisons for ESD and lightning transient suppression design.
Technical Context
This unidirectional TVS diode uses a glass-passivated silicon junction optimized for fast response (<1 ns) and low incremental surge resistance. Its clamping action begins at 71.3 V (min VBR) and limits transients to ≤104 V at 14.6 A (10/1000 µs waveform), with 0.105 %/°C temperature coefficient of VBR.
It supports repetitive surge duty cycles up to 0.01 %, dissipates 6.5 W on infinite heatsink at TL = 75 °C, and withstands 200 A non-repetitive forward surge (8.3 ms half-sine). Thermal resistance is 15.4 °C/W junction-to-lead and 75 °C/W junction-to-ambient.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min) | 71.3 V - ensures reliable conduction onset above normal operating voltage of 64.1 V rail |
| VC @ IPPM | 104 V - maximum clamped voltage during 14.6 A transient, defining protected circuit stress limit |
| PPPM | 1500 W - peak power handling capability for 10/1000 µs surges, critical for lightning/inductive switching immunity |
| VWM | 64.1 V - maximum continuous reverse working voltage without leakage degradation |
| IPPM | 14.6 A - peak pulse current corresponding to 104 V clamping, used for PCB trace sizing and fuse coordination |
| TJ max | +175 °C - enables operation in under-hood automotive and high-temperature industrial environments |
| RθJL | 15.4 °C/W - quantifies thermal path efficiency from junction to lead, guiding heatsinking decisions |
Pinout & Package
Package: Case Style 1.5KE - molded epoxy body with matte tin-plated leads; meets UL 94 V-0 flammability rating and J-STD-002 solderability standard. Cathode indicated by color band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point during forward conduction | Connected to ground or low-side reference in unidirectional clamp configuration |
| Cathode | Current exit point during reverse-biased clamping | Connected to protected line (e.g., 48 V rail); color band identifies this terminal |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Enables stable VBR tolerance and long-term reliability under thermal cycling |
| 1500 W peak pulse power (10/1000 µs) | Supports IEC 61000-4-5 Level 4 surge immunity (4 kV line-earth) in properly designed circuits |
| Clamping voltage ≤104 V at 14.6 A | Protects downstream 75 V-rated MOSFETs and controllers without overstress |
| Response time <1 ns | Acts before sensitive ICs experience damaging overvoltage - faster than MOVs or GDTs |
| AEC-Q101 qualified option available | HE3 suffix variants meet automotive-grade qualification for engine control and ADAS power inputs |
Applications
| Automotive Power Input Protection | Industrial Sensor Signal Line Clamp |
|---|---|
Use Scenario: 48 V battery-fed ECUs exposed to load dump (ISO 16750-2) and jump-start transients. IC Role / Device Role / Timing Role: Primary shunt protector placed upstream of DC-DC converter input. Use Value: Clamps 120 V transients to ≤104 V within nanoseconds, preventing converter IC damage and enabling compliance with ISO 7637-2 Pulse 5a. |
Use Scenario: Analog output lines (4–20 mA) from pressure sensors in factory automation cabinets. IC Role / Device Role / Timing Role: Unidirectional TVS on signal+ line referenced to system ground. Use Value: Limits induced surges from nearby motor drives to <104 V, preserving ADC input integrity and avoiding latch-up in signal conditioning op-amps. |
| Telecom DC Power Feeds | Consumer Appliance Motor Drive Inputs |
Use Scenario: -48 V telecom rectifier outputs feeding base station RF modules. IC Role / Device Role / Timing Role: Standoff-rated protector on PSE side of PoE-like distribution. Use Value: Withstands repeated 100 V/10 A surges per ITU-T K.21 Basic Level, maintaining VWM margin while clamping below module absolute max ratings. |
Use Scenario: Mains-derived 24 V DC bus powering BLDC gate drivers in smart washing machines. IC Role / Device Role / Timing Role: Secondary-level TVS after bulk filter, before gate driver IC. Use Value: Absorbs commutation spikes from inductive motor windings, limiting voltage overshoot to 104 V and preventing driver shoot-through or bootstrap capacitor failure. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ75A | Lower PPPM (600 W), smaller SMB package (vs. DO-201AB), 77.8 V VC @ 7.7 A | Better suited for space-constrained PCBs with lower-energy threats (IEC 61000-4-2 ESD only) | Select SMBJ75A when board area is limited and surge energy does not exceed 600 W; verify thermal dissipation in confined layouts. |
| 1.5SMC75A | Same PPPM (1500 W), SMC package (smaller footprint than DO-201AB), 108 V VC @ 13.9 A | Higher clamping voltage reduces protection margin for 75 V-rated components | Choose 1.5SMC75A only if mechanical fit requires SMC; confirm downstream devices tolerate 108 V clamping versus 104 V of 1.5KE75A-E3/54. |
Compared with SMBJ75A and 1.5SMC75A, the 1.5KE75A-E3/54 offers superior thermal robustness via its DO-201AB case (RθJL = 15.4 °C/W), tighter clamping (104 V), and proven field reliability in high-energy automotive and industrial deployments - making it preferred where surge repetition rate or ambient temperature exceeds SMB/SMC limits.
Availability
1.5KE75A-E3/54 is available at Aetrix Electronics and suitable for automotive power input protection, industrial sensor interface clamping, telecom DC feed protection, and consumer appliance motor drive inputs requiring stable component supply across extended temperature ranges and multi-year production cycles.
Supply support for 1.5KE75A-E3/54 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 designs and manufactures discrete semiconductors including diodes, rectifiers, and TVS devices, with emphasis on reliability, power handling, and AEC-Q101 qualification for harsh environments.
The 1.5KE series was developed specifically for high-energy transient suppression in automotive, industrial, and telecom infrastructure - prioritizing clamping precision, thermal stability, and surge repetition endurance over compactness.
FAQ
What is the breakdown voltage tolerance for 1.5KE75A-E3/54?
The 1.5KE75A-E3/54 has a specified breakdown voltage (VBR) range of 71.3 V (minimum) to 78.8 V (maximum) at 1.0 mA test current. This ±5 % tolerance ensures predictable clamping onset while allowing margin for manufacturing variation and temperature drift (0.105 %/°C coefficient). The 1.5KE75A-E3/54 maintains this specification across its full operating temperature range of -55 °C to +175 °C.
Is 1.5KE75A-E3/54 RoHS compliant and lead-free?
Yes, the 1.5KE75A-E3/54 is RoHS compliant and lead-free. The "E3" suffix explicitly denotes commercial-grade, RoHS-compliant construction with matte tin-plated leads that meet J-STD-002 solderability requirements. It also passes JESD 201 class 1A whisker testing, confirming long-term interconnect reliability in reflow-soldered assemblies. The 1.5KE75A-E3/54 contains no substances restricted under EU Directive 2011/65/EU.
How does the clamping voltage of 1.5KE75A-E3/54 compare to its standoff voltage?
The 1.5KE75A-E3/54 has a maximum standoff voltage (VWM) of 64.1 V and a maximum clamping voltage (VC) of 104 V at 14.6 A. This 40 V differential defines the device's protective window: it remains non-conductive below 64.1 V during normal operation but rapidly transitions to low-impedance conduction above ~71.3 V to clamp transients to ≤104 V. That 104 V ceiling is critical for ensuring downstream 75 V-rated components remain within safe operating limits.
Can 1.5KE75A-E3/54 be used in bidirectional configurations?
No, the 1.5KE75A-E3/54 is strictly unidirectional. Bidirectional variants in the same family use the "CA" suffix (e.g., 1.5KE75CA). The 1.5KE75A-E3/54 has a cathode band marking and conducts only in reverse bias - it must be installed with cathode toward the protected line. Using it in AC or floating applications without proper polarity alignment will result in forward conduction and failure. For bidirectional protection, select 1.5KE75CA or equivalent.
What is the maximum surge current rating for 1.5KE75A-E3/54?
The 1.5KE75A-E3/54 is rated for a peak pulse current (IPPM) of 14.6 A under the standard 10/1000 µs double-exponential waveform. This value is derived directly from its 1500 W peak pulse power rating and 104 V clamping voltage (I = P/V). It also supports a non-repetitive forward surge current (IFSM) of 200 A (8.3 ms half-sine), applicable only in unidirectional forward conduction mode - a key capability for handling inrush or fault currents in power supply inputs.
1.5KE75A-E3/54 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:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 64.1V
- Voltage - Breakdown (Min):
- 71.3V
- Voltage - Clamping (Max) @ Ipp:
- 104V
- Current - Peak Pulse (10/1000µs):
- 14.6A
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 1.5KE
1.5KE75A-E3/54 FAQ
1.How can I place an order for 1.5KE75A-E3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE75A-E3/54 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 1.5KE75A-E3/54 reliable?
The price and inventory of 1.5KE75A-E3/54 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE75A-E3/54 is usually 5 days.
3.What payment methods are accepted for 1.5KE75A-E3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE75A-E3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE75A-E3/54?
1.5KE75A-E3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE75A-E3/54 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 1.5KE75A-E3/54?
For technical support, including 1.5KE75A-E3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE75A-E3/54 requirements.
6.How does Aetrix verify that 1.5KE75A-E3/54 is sourced from the original manufacturer or authorized distributors?
All 1.5KE75A-E3/54 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 1.5KE75A-E3/54 meets industry standards.
7.What is the process for return or replacement of 1.5KE75A-E3/54?
All 1.5KE75A-E3/54 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE75A-E3/54, 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 1.5KE75A-E3/54 part is unused and in its original packaging.
Return procedure for 1.5KE75A-E3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE75A-E3/54 Tags
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