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Vishay General Semiconductor - Diodes Division 1.5KE75-E3/73
- Part No.:
- 1.5KE75-E3/73
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE75-E3/73.pdf
- Description:
- TVS DIODE 60.7VWM 109VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:4,595
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Product details
Overview
1.5KE75-E3/73 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 minimum 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 1.5KE75-E3/73 datasheet, 1.5KE75-E3/73 pinout, 1.5KE75-E3/73 application, or 1.5KE75-E3/73 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 validation.
Technical Context
This unidirectional TVS diode uses a glass-passivated silicon junction to achieve sub-nanosecond response time (<1 ns), enabling effective clamping of fast-rising transients such as ESD (IEC 61000-4-2), lightning-induced surges (IEC 61000-4-5), and inductive switching spikes. Its low incremental surge resistance ensures minimal voltage overshoot during high-current events.
The device complies with JEDEC standards for transient suppressors and supports 200 A non-repetitive forward surge current (8.3 ms half-sine). Thermal resistance from junction to lead is 15.4 °C/W, allowing reliable operation up to 175 °C junction temperature when mounted on PCB copper areas per Vishay's recommended footprint guidelines.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 71.3 V / 78.8 V at 1 mA test current - defines precise voltage threshold where clamping initiates reliably |
| VWM | 64.1 V maximum - ensures no conduction during normal 60 V DC rail operation with 6.9 V margin |
| VC @ IPPM | 104 V at 14.6 A - limits downstream component stress during 1500 W transient events |
| PPPM | 1500 W (10/1000 µs waveform) - sustains high-energy surges without failure in industrial power interfaces |
| IFSM | 200 A (8.3 ms half-sine) - withstands motor driver or relay coil turn-off surges without degradation |
| TJ range | –55 °C to +175 °C - supports under-hood automotive and high-temp industrial environments |
| Package | DO-201AD (Case Style 1.5KE) - industry-standard axial-leaded package with 0.375" lead length for through-hole mounting |
Pinout & Package
Package: DO-201AD molded epoxy case with matte tin-plated leads; meets UL 94 V-0 flammability rating and J-STD-002 solderability requirements. Cathode indicated by color band on body end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point in forward bias | Connected to protected circuit ground or low-side return path during transient clamp |
| Cathode | Current exit point in forward bias; marked with band | Connected to line being protected (e.g., 60 V supply rail); conducts during overvoltage event |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Enables stable VBR tolerance (±5 %) and long-term reliability under thermal cycling |
| 1500 W peak pulse power | Handles 10/1000 µs transients common in ISO 7637-2 automotive load dump and IEC 61000-4-5 surge tests |
| Sub-nanosecond response time | Clamps within <1 ns - faster than MOVs or polymer-based protectors, preserving signal integrity |
| RoHS-compliant E3 suffix | Meets JESD 201 Class 1A whisker resistance; suitable for commercial-grade high-volume production |
| Low clamping ratio (VC/VBR ≈ 1.46) | Minimizes overvoltage exposure to downstream ICs like microcontrollers and CAN transceivers |
Applications
| Automotive Power Input Protection | Industrial Sensor Signal Line Protection |
|---|---|
Use Scenario: 12 V/24 V battery-fed ECUs exposed to load dump (ISO 7637-2 Pulse 5a) and alternator ripple. IC Role / Device Role / Timing Role: Primary clamping element placed between power rail and ground, absorbing >1000 W surges before LDO or MCU input stage. Use Value: Limits rail voltage to ≤104 V during 14.6 A transient, preventing damage to 36 V-rated regulators and 5 V logic supplies. |
Use Scenario: 4–20 mA current loop or analog voltage output (0–10 V) from pressure/temperature sensors in factory automation. IC Role / Device Role / Timing Role: Bidirectional protection not applicable; this unidirectional variant used on grounded-signal side to shunt positive transients only. Use Value: Clamps induced surges from nearby motor drives while maintaining <1 µA leakage at 64.1 V, avoiding measurement drift. |
| Telecom DC Power Feeds | Consumer Device USB Power Input |
Use Scenario: Central office or remote terminal equipment powered via -48 V DC distribution with lightning coupling risk on long cable runs. IC Role / Device Role / Timing Role: First-stage protector on -48 V input, oriented cathode-to-rail to clamp positive excursions above -41.7 V (|VWM|). Use Value: Withstands repetitive 1500 W surges per Telcordia GR-1089-CORE Level 3 requirements without parameter shift. |
Use Scenario: USB-C PD input stage in portable monitors or docking stations subject to hot-plug ESD and adapter fault transients. IC Role / Device Role / Timing Role: Secondary overvoltage guard after primary fuse and common-mode choke, placed before buck converter input. Use Value: Delivers 104 V clamping ceiling that keeps 20 V-rated input capacitors and MOSFETs within safe operating area during 8 kV contact discharge. |
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; lower 600 W PPPM; 75 V VWM; 121 V VC @ 4.9 A | Surface-mount solution for space-constrained PCBs; unsuitable for >1 kA surge duty | Select SMBJ75A when board real estate is limited and peak surge energy is ≤600 W |
| 1.5KE75AHE3_B | Same DO-201AD package; AEC-Q101 qualified; identical VBR/VC specs; enhanced whisker resistance (Class 2) | Required for automotive under-hood modules needing automotive qualification | Choose 1.5KE75AHE3_B for OEM automotive designs requiring AEC-Q101 compliance |
Compared with 1.5KE75-E3/73, SMBJ75A offers SMT compatibility but sacrifices 60 % peak power handling; 1.5KE75AHE3_B provides identical protection performance with certified automotive reliability - neither is pin-compatible due to differing package footprints, but both serve overlapping functional roles in transient suppression networks.
Availability
1.5KE75-E3/73 is available at Aetrix Electronics and suitable for automotive power input protection, industrial sensor interface hardening, telecom DC feed protection, and consumer USB-C PD input staging requiring stable component supply and traceable sourcing.
Supply support for 1.5KE75-E3/73 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 and application-specific performance.
The 1.5KE series was engineered for high-energy transient suppression in harsh environments, targeting automotive, industrial, and telecom infrastructure where robustness against lightning, ESD, and inductive switching is critical.
FAQ
What is the clamping voltage of the 1.5KE75-E3/73 under maximum rated surge current?
The 1.5KE75-E3/73 exhibits 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 ensures downstream components see no more than 104 V during worst-case transient events, making it suitable for protecting 36 V-rated regulators and 5 V logic circuits. The 1.5KE75-E3/73 maintains this clamping performance across its full operating temperature range.
Is the 1.5KE75-E3/73 suitable for bidirectional transient protection?
No, the 1.5KE75-E3/73 is a unidirectional TVS diode, intended only for clamping positive-going transients on grounded systems. For bidirectional protection, Vishay offers the 1.5KE75CA variant, which has symmetrical breakdown in both polarities. Using the 1.5KE75-E3/73 in a bidirectional configuration would leave negative transients unclamped and may cause device failure. Always verify polarity marking (cathode band) before installing the 1.5KE75-E3/73.
What is the standoff voltage rating of the 1.5KE75-E3/73, and how does it relate to system operating voltage?
The 1.5KE75-E3/73 has a maximum standoff voltage (VWM) of 64.1 V, meaning it remains non-conductive up to this DC or RMS voltage level. This allows safe use on 60 V nominal DC systems with 4.1 V design margin, preventing leakage current or thermal runaway during normal operation. Exceeding VWM risks premature conduction and accelerated aging. The 1.5KE75-E3/73 is therefore ideal for 48 V and 60 V industrial power rails.
Does the 1.5KE75-E3/73 meet automotive qualification standards?
The 1.5KE75-E3/73 is a commercial-grade part and is not AEC-Q101 qualified. For automotive applications requiring qualification, Vishay offers the 1.5KE75AHE3_B variant, which shares identical electrical specifications but adds AEC-Q101 stress testing and Class 2 whisker resistance. The 1.5KE75-E3/73 remains appropriate for non-safety-critical automotive subsystems where qualification is not mandated, such as infotainment power conditioning.
What package type does the 1.5KE75-E3/73 use, and what are its mechanical dimensions?
The 1.5KE75-E3/73 uses the DO-201AD axial-leaded package (Case Style 1.5KE), with overall length of 1.0 inch (25.4 mm) min, body diameter of 0.210–0.285 inch (5.3–7.2 mm), and lead diameter of 0.038–0.042 inch (0.96–1.07 mm). Leads are matte tin-plated and conform to J-STD-002 solderability. The cathode is marked by a color band on one end of the epoxy body - critical for correct orientation during 1.5KE75-E3/73 placement.
1.5KE75-E3/73 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-201AA, DO-27, Axial
- Series:
- TransZorb®
- Packaging:
- Tape & Box (TB)
- 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:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 1.5KE
1.5KE75-E3/73 FAQ
1.How can I place an order for 1.5KE75-E3/73 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE75-E3/73 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 1.5KE75-E3/73 reliable?
The price and inventory of 1.5KE75-E3/73 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE75-E3/73 is usually 5 days.
3.What payment methods are accepted for 1.5KE75-E3/73?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE75-E3/73 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE75-E3/73?
1.5KE75-E3/73 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE75-E3/73 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 1.5KE75-E3/73?
For technical support, including 1.5KE75-E3/73 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE75-E3/73 requirements.
6.How does Aetrix verify that 1.5KE75-E3/73 is sourced from the original manufacturer or authorized distributors?
All 1.5KE75-E3/73 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 1.5KE75-E3/73 meets industry standards.
7.What is the process for return or replacement of 1.5KE75-E3/73?
All 1.5KE75-E3/73 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE75-E3/73, 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 1.5KE75-E3/73 part is unused and in its original packaging.
Return procedure for 1.5KE75-E3/73:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE75-E3/73 Tags
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