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Vishay General Semiconductor - Diodes Division 1.5KE75A-E3/51
- Part No.:
- 1.5KE75A-E3/51
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE75A-E3/51.pdf
- Description:
- TVS DIODE 64.1VWM 104VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:5,679
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Product details
Overview
1.5KE75A-E3/51 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 71.3 V to 78.8 V breakdown voltage (VBR), 64.1 V maximum standoff voltage (VWM), 104 V clamping voltage 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 - deployed in automotive power supply inputs and industrial sensor interface protection.
For engineers reviewing the 1.5KE75A-E3/51 datasheet, 1.5KE75A-E3/51 pinout, 1.5KE75A-E3/51 application, or 1.5KE75A-E3/51 equivalent, this page delivers verified electrical parameters, JEDEC 1.5KE package details, clamping performance under surge conditions, thermal resistance data (RθJA = 75 °C/W), 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 behavior is defined by a 10/1000 µs waveform test condition with 0.01% duty cycle, and it exhibits a temperature coefficient of VBR of +0.105 %/°C - ensuring predictable voltage threshold drift over temperature.
The device supports 200 A non-repetitive forward surge current (IFSM) at 8.3 ms half-sine, maintains ≤1.0 µA reverse leakage at VWM, and delivers stable clamping up to its 175 °C maximum junction temperature - enabling robust placement near MOSFET gate drivers and microcontroller I/O pins in high-reliability systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 71.3 V / 78.8 V - defines minimum and maximum guaranteed breakdown threshold at 1 mA test current |
| VWM | 64.1 V - maximum continuous working voltage before significant leakage begins |
| VC @ IPPM | 104 V - clamped voltage seen by protected circuit during 14.6 A 10/1000 µs transient |
| PPPM | 1500 W - peak transient energy absorption capability without failure |
| IPPM | 14.6 A - maximum single-pulse surge current the device safely clamps |
| TJ max. | +175 °C - enables operation in under-hood automotive or high-ambient industrial environments |
| RθJA | 75 °C/W - thermal resistance from junction to ambient, critical for PCB copper pour sizing |
Pinout & Package
Package: JEDEC DO-201AD (Case Style 1.5KE), axial-leaded, molded epoxy body with matte tin-plated leads compliant to J-STD-002 and JESD 22-B102. Cathode indicated by color band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point in forward bias | Connected to ground or low-side reference in unidirectional clamp configuration |
| Cathode | Current exit point in forward bias; high-impedance terminal in reverse standby | Connected to protected line (e.g., 48 V rail or CAN_H); color band identifies this terminal |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Enables stable long-term leakage performance and resistance to humidity-induced degradation |
| 1500 W peak pulse power (10/1000 µs) | Supports IEC 61000-4-5 Level 4 (4 kV) surge immunity without derating in standard layouts |
| Clamping time < 1 ns | Protects sub-ns edge-rate digital interfaces (e.g., RS-485, LIN) before damage occurs |
| AEC-Q101 qualification option (HE3 suffix) | Validated for automotive powertrain and chassis applications requiring zero defect reliability |
| UL 94 V-0 molding compound | Meets flame-retardancy requirements for enclosed industrial control enclosures |
Applications
| Automotive Power Input Protection | Industrial Sensor Signal Line Clamp |
|---|---|
Use Scenario: 12 V/24 V battery input to body control module exposed to load dump transients per ISO 7637-2 Pulse 5a. IC Role / Device Role / Timing Role: Primary overvoltage clamp placed upstream of DC-DC converter input stage. Use Value: Limits transient voltage to ≤104 V, preventing damage to 36 V-rated input capacitors and controller ICs. | Use Scenario: Analog output line (4–20 mA) from pressure sensor in factory automation cabinet subject to ESD and inductive switching noise. IC Role / Device Role / Timing Role: Unidirectional shunt protector on signal line referenced to system ground. Use Value: Clamps fast-rising transients while maintaining <1.0 µA leakage at 24 V nominal, preserving measurement accuracy. |
| Telecom DC Power Feeding Protection | Consumer Appliance Motor Drive Surge Suppression |
Use Scenario: -48 V DC feeding line to remote radio head in outdoor base station exposed to lightning-induced surges. IC Role / Device Role / Timing Role: First-stage TVS on power feed path before DC-DC isolation stage. Use Value: Absorbs 1500 W pulses without degradation, meeting Telcordia GR-1089-CORE Level 3 surge requirements. | Use Scenario: 24 V supply rail to BLDC motor driver IC in smart washing machine subjected to back-EMF spikes during commutation. IC Role / Device Role / Timing Role: Rail-to-ground unidirectional suppressor adjacent to gate driver power input. Use Value: Clamps 104 V within nanoseconds, protecting 30 V-rated driver ICs from repetitive 14.6 A surge events. |
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 | DO-214AA package (smaller footprint), 75 V VWM, 100 V VC @ 12.3 A, 600 W PPPM | Lower power handling; suited for space-constrained consumer electronics, not heavy industrial surges | Select when board area is limited and peak surge energy is ≤600 W |
| 1.5KE75CA | Bidirectional variant; same VBR range but symmetric clamping in both polarities; no cathode marking | Required for AC-coupled or floating signal lines (e.g., RS-422, audio), not DC rails | Choose only when bidirectional protection is mandated by signal topology |
Compared with SMBJ75A and 1.5KE75CA, the 1.5KE75A-E3/51 provides higher surge margin (1500 W vs. 600 W) and proven ruggedness in high-energy industrial environments, while retaining compatibility with legacy DO-201AD footprints and through-hole assembly processes.
Availability
1.5KE75A-E3/51 is available at Aetrix Electronics and suitable for automotive power distribution, industrial sensor interface protection, telecom DC feeding, and appliance motor drive circuits requiring stable component supply and long-lifecycle support.
Supply support for 1.5KE75A-E3/51 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, TVS devices, and optoelectronics with emphasis on reliability, power handling, and automotive-grade qualification.
The 1.5KE series was engineered for high-energy transient suppression in harsh environments - targeting applications where sustained surge immunity, thermal stability, and long-term parametric consistency are mandatory.
FAQ
What is the clamping voltage of the 1.5KE75A-E3/51 under a 10/1000 µs surge?
The 1.5KE75A-E3/51 clamps to a maximum of 104 V when subjected to its rated 14.6 A peak pulse current (IPPM) under the standardized 10/1000 µs waveform. This value is measured per JEDEC test conditions and represents the worst-case voltage imposed on the protected circuit during transient events - critical for verifying downstream component voltage ratings.
Is the 1.5KE75A-E3/51 RoHS compliant and lead-free?
Yes, the 1.5KE75A-E3/51 carries the "E3" suffix, indicating full RoHS compliance per Directive 2011/65/EU and exemption 7a. Its matte tin-plated leads meet J-STD-002 solderability requirements and JESD 201 Class 1A whisker resistance testing - confirmed in Vishay's official documentation for this part number.
Does the 1.5KE75A-E3/51 have AEC-Q101 qualification?
No - the 1.5KE75A-E3/51 is commercial grade. AEC-Q101 qualification applies only to variants with the "HE3" suffix (e.g., 1.5KE75AHE3_B). The 1.5KE75A-E3/51 meets all electrical and mechanical specs in the Vishay 88301 datasheet but lacks automotive stress-test validation and is intended for industrial, telecom, and consumer applications.
What is the standoff voltage (VWM) of the 1.5KE75A-E3/51, and why does it matter?
The 1.5KE75A-E3/51 has a maximum standoff voltage (VWM) of 64.1 V - the highest continuous DC or RMS voltage it can block without exceeding 1.0 µA leakage. This ensures reliable operation on 48 V or 60 V nominal systems while avoiding false triggering during normal operation, directly impacting system uptime and signal integrity.
Can the 1.5KE75A-E3/51 be used in parallel for higher surge capacity?
While possible, paralleling 1.5KE75A-E3/51 devices is not recommended without current-sharing resistors due to VBR tolerance (±5% typical) causing uneven stress. Vishay specifies single-device use per line; for >1500 W needs, select higher-rated parts like 3KP75A instead of relying on parallel configurations.
1.5KE75A-E3/51 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-201AA, DO-27, Axial
- Series:
- TransZorb®
- Packaging:
- Bulk
- Product Status:
- Obsolete
- 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-E3/51 FAQ
1.How can I place an order for 1.5KE75A-E3/51 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE75A-E3/51 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-E3/51 reliable?
The price and inventory of 1.5KE75A-E3/51 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-E3/51 is usually 5 days.
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Once your 1.5KE75A-E3/51 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-E3/51?
For technical support, including 1.5KE75A-E3/51 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE75A-E3/51 requirements.
6.How does Aetrix verify that 1.5KE75A-E3/51 is sourced from the original manufacturer or authorized distributors?
All 1.5KE75A-E3/51 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-E3/51 meets industry standards.
7.What is the process for return or replacement of 1.5KE75A-E3/51?
All 1.5KE75A-E3/51 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE75A-E3/51, 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-E3/51 part is unused and in its original packaging.
Return procedure for 1.5KE75A-E3/51:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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