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Vishay General Semiconductor - Diodes Division 1.5KE75CA-E3/54
- Part No.:
- 1.5KE75CA-E3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE75CA-E3/54.pdf
- Description:
- TVS DIODE 64.1VWM 104VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:1,734
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Product details
Overview
1.5KE75CA-E3/54 from Vishay General Semiconductor is a bidirectional Transient Voltage Suppressor (TVS) diode designed for robust overvoltage protection in power 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 (10/1000 µs), and operates across -55 °C to +175 °C junction temperature. It is used to protect MOSFETs, ICs, and sensor interfaces against lightning-induced surges and inductive switching transients.
For engineers reviewing the 1.5KE75CA-E3/54 datasheet, 1.5KE75CA-E3/54 pinout, 1.5KE75CA-E3/54 application, or 1.5KE75CA-E3/54 equivalent, this device delivers verified bidirectional clamping performance with low incremental surge resistance, fast sub-nanosecond response, and AEC-Q101 qualification options - critical for automotive power rail and industrial I/O protection design.
Technical Context
This TVS diode employs a glass-passivated silicon junction optimized for high-energy transient suppression. Its bidirectional architecture enables symmetrical clamping in both polarities without external polarity management, supporting AC-coupled lines and differential interfaces. The device meets JEDEC-standard 10/1000 µs waveform testing with 0.01% duty cycle repeatability.
Thermal performance is defined by RθJA = 75 °C/W and RθJL = 15.4 °C/W, enabling reliable operation under pulsed stress when mounted on standard PCB copper. It exhibits a temperature coefficient of VBR of +0.105 %/°C, ensuring predictable voltage drift across its full operating range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 71.3 V / 78.8 V - Ensures reliable triggering above normal operating voltage while avoiding false clamping during transients. |
| VWM | 64.1 V - Maximum continuous working voltage before leakage exceeds 1 µA; defines safe operating margin for 48 V or 60 V DC systems. |
| VC @ IPPM | 104 V - Clamped voltage at 14.6 A peak pulse; limits downstream component stress during 1500 W surge events. |
| PPPM | 1500 W - Peak pulse power handling per 10/1000 µs waveform; supports IEC 61000-4-5 Level 4 surge immunity compliance. |
| IPPM | 14.6 A - Peak pulse current capability; determines minimum series impedance required to limit energy into protected circuitry. |
| TJ Range | -55 °C to +175 °C - Enables deployment in under-hood automotive, industrial motor drives, and outdoor telecom equipment. |
| Leakage @ VWM | 1 µA max - Low standby current preserves battery life and avoids loading sensitive analog or control circuits. |
Pinout & Package
Package: Case Style 1.5KE - molded epoxy body with matte tin-plated leads, UL 94 V-0 rated, RoHS compliant (E3 suffix), 0.375" lead length. Dimensions: 1.0" × 1.0" × 0.285" (25.4 mm × 25.4 mm × 7.2 mm).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (Bidirectional) | Reversible transient conduction path | No polarity marking; symmetric terminals enable direct placement across AC lines or ungrounded differential pairs without orientation check. |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Enhances long-term reliability and moisture resistance versus plastic-passivated alternatives; validated for >1000 h HAST testing. |
| 1500 W peak pulse power (10/1000 µs) | Supports single-event surge protection up to IEC 61000-4-5 4 kV open-circuit / 2 kA short-circuit test levels. |
| Sub-nanosecond response time | Clamps within ≤1 ns - faster than MOVs or polymer-based suppressors - preserving integrity of high-speed digital and analog signals. |
| Low incremental surge resistance | Minimizes voltage overshoot during high-di/dt events; critical for protecting gate drivers and precision ADC front-ends. |
| AEC-Q101 qualified variants available | Enables drop-in use in automotive power distribution modules, body control units, and ADAS sensor interfaces requiring automotive-grade validation. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V/24 V vehicle power buses from load dump and alternator ripple transients. IC Role / Device Role / Timing Role: Bidirectional clamping element placed between power rail and ground, absorbing energy before it reaches ECUs or lighting controllers. Use Value: Withstands 1500 W surges and operates up to +175 °C, meeting ISO 7637-2 Pulse 5a requirements without derating. |
Use Scenario: Shielding 4–20 mA current-loop or RS-485 transceivers from ESD and field-induced surges in factory automation. IC Role / Device Role / Timing Role: Parallel-connected TVS across differential pair or supply line, providing low-impedance shunt path during transients. Use Value: 104 V clamping voltage ensures downstream transceiver inputs remain below absolute maximum ratings during 1 kV/1 A IEC 61000-4-5 events. |
| Telecom Line Surge Protection | Consumer Power Adapter Input Protection |
Use Scenario: Safeguarding DSL or POTS line interface ICs from lightning-induced surges on outside plant wiring. IC Role / Device Role / Timing Role: Primary-level protector installed at board edge, upstream of GDT or secondary TVS stages. Use Value: Bidirectional symmetry matches AC-coupled telecom signaling; 64.1 V VWM allows compatibility with -48 V nominal systems. |
Use Scenario: Adding secondary surge immunity to AC-DC adapter input stage after bridge rectifier. IC Role / Device Role / Timing Role: Clamp device across bulk capacitor or rectifier output, limiting voltage spikes from mains switching noise. Use Value: 1500 W rating handles repetitive line-switching transients; RoHS-compliant E3 finish supports global regulatory compliance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ75CA | Lower 600 W peak power, smaller SMB package (3.5 mm × 4.6 mm), 100 V clamping at 6.5 A. | Better suited for space-constrained PCBs and lower-energy transients; not rated for 1500 W IEC 61000-4-5 Level 4. | Select SMBJ75CA when board area is limited and surge threat level is ≤1 kV/0.5 kA; verify thermal dissipation with RθJA = 110 °C/W. |
| 1.5SMC75CA | Same 1500 W rating and 75 V nominal, but SMC package (7.1 mm × 6.2 mm); slightly higher VC (107 V) and lower IPPM (14.0 A). | Offers identical surge capability with improved mechanical robustness and thermal mass; compatible with automated SMT placement. | Choose 1.5SMC75CA for reflow-soldered designs requiring higher mounting reliability and better thermal coupling to copper pour. |
Compared with 1.5KE75CA-E3/54, SMBJ75CA trades surge capacity for footprint reduction, while 1.5SMC75CA maintains equivalent power handling in a surface-mount format - enabling layout flexibility without compromising clamping performance or thermal endurance.
Availability
1.5KE75CA-E3/54 is available at Aetrix Electronics and suitable for automotive power distribution, industrial sensor interfaces, telecom line protection, and consumer power adapter designs requiring stable component supply and long-term manufacturability.
Supply support for 1.5KE75CA-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 is a global leader in discrete semiconductors, specializing in diodes, MOSFETs, optoelectronics, and passive components with emphasis on reliability, efficiency, and ruggedness.
The 1.5KE series was engineered specifically for high-energy transient suppression in harsh environments - targeting automotive, industrial, and telecom applications where failure due to voltage surges must be eliminated.
FAQ
What is the clamping voltage of the 1.5KE75CA-E3/54 under maximum rated surge conditions?
The 1.5KE75CA-E3/54 has a maximum clamping voltage (VC) of 104 V at its rated peak pulse current (IPPM) of 14.6 A, measured using the standardized 10/1000 µs double-exponential waveform. This value is guaranteed per Vishay's datasheet Document Number 88301 and defines the upper voltage limit imposed on protected circuitry during worst-case surge events. The 1.5KE75CA-E3/54 maintains this clamping performance across its full operating temperature range.
Is the 1.5KE75CA-E3/54 suitable for automotive applications?
Yes - while the base 1.5KE75CA-E3/54 is commercial-grade, Vishay offers AEC-Q101 qualified versions (e.g., 1.5KE75CAHE3_B) in the same 1.5KE family. These qualified variants undergo stress testing for temperature cycling, humidity, and mechanical shock per automotive standards. The 1.5KE75CA-E3/54 itself shares identical electrical characteristics and thermal behavior, making it suitable for non-safety-critical automotive subsystems such as infotainment power rails or lighting control modules when validated per system-level requirements.
How does the bidirectional configuration of the 1.5KE75CA-E3/54 affect its usage compared to unidirectional TVS diodes?
The 1.5KE75CA-E3/54 provides symmetrical clamping in both polarities, eliminating the need to observe anode/cathode orientation during placement - unlike unidirectional types marked with a band. This makes it ideal for AC signal paths, differential bus lines (e.g., RS-485), or floating power domains where voltage polarity reversal can occur. Its bidirectional structure ensures equal VBR, VC, and leakage in either direction, simplifying schematic design and reducing BOM complexity for dual-polarity protection needs.
What is the standoff voltage (VWM) of the 1.5KE75CA-E3/54, and why is it important?
The standoff voltage (VWM) of the 1.5KE75CA-E3/54 is 64.1 V - the maximum continuous DC or RMS voltage the device can withstand without exceeding 1 µA reverse leakage current. This parameter establishes the design margin between normal operating voltage and clamping onset. For example, in a 48 V industrial system, VWM = 64.1 V provides ~33% headroom, preventing nuisance conduction during normal operation while ensuring rapid response when transients exceed that threshold. The 1.5KE75CA-E3/54's VWM is tightly specified and tested per JEDEC standards.
Can the 1.5KE75CA-E3/54 be used in parallel to increase surge handling capacity?
No - the 1.5KE75CA-E3/54 is not recommended for parallel connection due to inherent VBR tolerance (±5% min/max spread) and thermal coupling limitations. Mismatched breakdown voltages cause current imbalance, leading to premature failure of the lower-VBR unit. For higher surge capacity, Vishay recommends selecting a single higher-rated device (e.g., 1.5KE100CA) or cascading with upstream current-limiting impedance. The 1.5KE75CA-E3/54 datasheet explicitly advises against paralleling without external balancing networks.
1.5KE75CA-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:
- -
- Bidirectional Channels:
- 1
- 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
1.5KE75CA-E3/54 FAQ
1.How can I place an order for 1.5KE75CA-E3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE75CA-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 1.5KE75CA-E3/54 reliable?
The price and inventory of 1.5KE75CA-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 1.5KE75CA-E3/54 is usually 5 days.
3.What payment methods are accepted for 1.5KE75CA-E3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE75CA-E3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE75CA-E3/54?
1.5KE75CA-E3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE75CA-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 1.5KE75CA-E3/54?
For technical support, including 1.5KE75CA-E3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE75CA-E3/54 requirements.
6.How does Aetrix verify that 1.5KE75CA-E3/54 is sourced from the original manufacturer or authorized distributors?
All 1.5KE75CA-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 1.5KE75CA-E3/54 meets industry standards.
7.What is the process for return or replacement of 1.5KE75CA-E3/54?
All 1.5KE75CA-E3/54 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE75CA-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 1.5KE75CA-E3/54 part is unused and in its original packaging.
Return procedure for 1.5KE75CA-E3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE75CA-E3/54 Tags
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