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Vishay General Semiconductor - Diodes Division 1.5KE7.5A-E3/73
- Part No.:
- 1.5KE7.5A-E3/73
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE7.5A-E3/73.pdf
- Description:
- TVS DIODE 6.4VWM 11.3VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:7,483
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Product details
Overview
1.5KE7.5A-E3/73 from Vishay General Semiconductor is a unidirectional Transient Voltage Suppressor (TVS) diode designed for primary overvoltage protection on DC power rails and signal lines. It features a 7.13 V to 7.88 V breakdown voltage (VBR) at 10 mA, 6.40 V maximum standoff voltage (VWM), 11.3 V clamping voltage (VC) at 133 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 circuits.
For engineers reviewing the 1.5KE7.5A-E3/73 datasheet, 1.5KE7.5A-E3/73 pinout, 1.5KE7.5A-E3/73 application, or 1.5KE7.5A-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 robust ESD and lightning transient protection 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 VBR = 7.13–7.88 V and limits transient energy to ≤11.3 V at 133 A (10/1000 µs), with 0.061 %/°C temperature coefficient of VBR.
It supports repetitive surge duty cycles up to 0.01 %, dissipates 6.5 W continuously on an infinite heatsink at TL = 75 °C, and withstands 200 A non-repetitive forward surge (8.3 ms half-sine). The device is rated for 175 °C maximum junction temperature and exhibits 75 °C/W junction-to-ambient thermal resistance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 7.13 V / 7.88 V at 10 mA - defines precise voltage threshold where clamping initiates under standardized test conditions |
| VWM | 6.40 V - maximum continuous reverse operating voltage before leakage exceeds 500 µA |
| VC @ IPPM | 11.3 V at 133 A - peak clamped voltage during 1500 W transient, directly limiting downstream IC stress |
| PPPM | 1500 W (10/1000 µs waveform) - surge handling capacity for lightning and inductive switching transients |
| IFSM | 200 A (8.3 ms half-sine) - single-event forward surge capability for accidental polarity reversal events |
| TJ Range | -55 °C to +175 °C - enables deployment in under-hood automotive and high-temperature industrial environments |
| RθJA | 75 °C/W - informs PCB copper area and thermal relief requirements for sustained power dissipation |
Pinout & Package
Package: DO-201AD (Case Style 1.5KE), axial-leaded, molded epoxy body with matte tin-plated leads compliant with J-STD-002 and JESD 22-B102 solderability standards. Cathode indicated by color band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential side (e.g., GND or return path) in unidirectional clamp configuration |
| Cathode | Reverse-biased clamping terminal | Connected to protected line (e.g., 5 V rail or sensor input); color band identifies this end |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Ensures stable VBR tolerance and long-term reliability under humidity and thermal cycling |
| 1500 W peak pulse power (10/1000 µs) | Provides robust protection against IEC 61000-4-5 Level 4 surges (4 kV/2 Ω) without degradation |
| Clamping voltage ≤11.3 V at 133 A | Keeps protected 5 V logic interfaces safely below absolute maximum ratings during transients |
| Response time <1 ns | Engages before sensitive CMOS inputs can be damaged by fast-rising ESD or switching spikes |
| RoHS-compliant, commercial grade (E3 suffix) | Meets global environmental compliance; qualified per JESD 201 Class 1A whisker testing |
Applications
| Automotive Power Input Protection | Industrial Sensor Signal Line Clamp |
|---|---|
Use Scenario: 12 V battery-fed ECUs exposed to load dump (ISO 7637-2 Pulse 5a) and alternator ripple. IC Role / Device Role / Timing Role: Primary shunt protector placed upstream of LDOs and microcontrollers to clamp transients before they reach regulation stage. Use Value: Limits voltage excursion to ≤11.3 V during 133 A surges, preventing latch-up or gate oxide rupture in downstream 5 V/3.3 V ICs. |
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-capable variant not applicable; this unidirectional 1.5KE7.5A-E3/73 protects grounded-side signal returns against ground bounce or induced surges. Use Value: Clamps negative-going transients to <1 V (forward VF ≈ 3.5 V) while holding positive excursions to ≤11.3 V, preserving ADC reference integrity. |
| Consumer USB Port Surge Guard | Telecom DSL Line Interface Protection |
Use Scenario: VBUS line (5 V) in USB 2.0 host ports subjected to ESD (IEC 61000-4-2 ±15 kV contact) and hot-plug inrush. IC Role / Device Role / Timing Role: First-line defense parallel to port, conducting surge current away from USB controller PHY and ESD diode array. Use Value: Sub-1 ns response ensures clamping occurs before internal PHY ESD structures activate, reducing cumulative damage risk. |
Use Scenario: Tip/ring lines of ADSL/VDSL modems connected to outside plant wiring vulnerable to lightning-induced surges. IC Role / Device Role / Timing Role: Unidirectional placement on grounded conductor (e.g., ring return) to suppress common-mode transients entering via pair imbalance. Use Value: Withstands 1500 W pulses without parametric shift, maintaining specified VBR and VC after repeated 10/1000 µs events per Telcordia GR-1089. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ7.0A | Lower PPPM (600 W), smaller SMB package (vs. DO-201AD), VC = 11.2 V @ 53.3 A | Better suited for space-constrained PCBs; insufficient for IEC 61000-4-5 Level 4 where 1500 W is mandated | Select when board area is critical and surge threat level is limited to IEC 61000-4-2/4-4 only |
| 1.5KE7.5AHE3_B | Identical electrical specs; AEC-Q101 qualified, JESD 201 Class 2 whisker rating, "B" revision code | Required for automotive production; not necessary for commercial-grade industrial or consumer use | Choose 1.5KE7.5AHE3_B only if automotive qualification (e.g., Tier-1 supply chain) is mandatory |
Compared with SMBJ7.0A, 1.5KE7.5A-E3/73 delivers 2.5× higher surge power handling in a through-hole package ideal for high-energy industrial transients; versus 1.5KE7.5AHE3_B, it offers identical protection performance at lower cost and qualification scope for non-automotive applications.
Availability
1.5KE7.5A-E3/73 is available at Aetrix Electronics and suitable for automotive power input protection, industrial sensor interface clamping, consumer USB VBUS guard, and telecom DSL line interface protection requiring stable component supply and full traceability.
Supply support for 1.5KE7.5A-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, power efficiency, and AEC-Q qualification.
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.
FAQ
What is the breakdown voltage range of the 1.5KE7.5A-E3/73?
The 1.5KE7.5A-E3/73 has a guaranteed breakdown voltage (VBR) range of 7.13 V to 7.88 V at a test current of 10 mA, measured per JEDEC standard. This tight tolerance ensures predictable clamping onset across production lots and temperature extremes, making the 1.5KE7.5A-E3/73 suitable for precision 5 V rail protection where overvoltage margin is constrained.
Is the 1.5KE7.5A-E3/73 RoHS compliant and lead-free?
Yes, the 1.5KE7.5A-E3/73 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, confirming suitability for lead-free reflow and wave soldering processes without risk of tin whisker growth.
What is the maximum clamping voltage of the 1.5KE7.5A-E3/73 under surge conditions?
The 1.5KE7.5A-E3/73 clamps to a maximum of 11.3 V when subjected to its rated peak pulse current of 133 A (10/1000 µs waveform). This value is measured across the device terminals during standardized surge testing and represents the upper limit of voltage seen by downstream circuitry - critical for ensuring compatibility with 5 V logic families' absolute maximum ratings.
Can the 1.5KE7.5A-E3/73 be used in bidirectional configurations?
No, the 1.5KE7.5A-E3/73 is a unidirectional TVS diode, identifiable by its cathode band marking. For bidirectional operation, Vishay specifies the 1.5KE7.5CA variant (not the -E3/73 suffix). Using the 1.5KE7.5A-E3/73 in reverse-biased AC applications would result in forward conduction and potential failure; always verify polarity alignment in schematic and layout for the 1.5KE7.5A-E3/73.
What is the thermal resistance and power derating behavior of the 1.5KE7.5A-E3/73?
The 1.5KE7.5A-E3/73 has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W and a junction-to-lead value (RθJL) of 15.4 °C/W. Its 6.5 W steady-state power dissipation is rated at TL = 75 °C; above that, linear derating applies per Figure 5 in the datasheet - e.g., at 100 °C lead temperature, usable power drops to ~4.9 W. This defines minimum copper pour and thermal via requirements for the 1.5KE7.5A-E3/73 in high-ambient designs.
1.5KE7.5A-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:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 6.4V
- Voltage - Breakdown (Min):
- 7.13V
- Voltage - Clamping (Max) @ Ipp:
- 11.3V
- Current - Peak Pulse (10/1000µs):
- 133A
- 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
1.5KE7.5A-E3/73 FAQ
1.How can I place an order for 1.5KE7.5A-E3/73 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE7.5A-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 1.5KE7.5A-E3/73 reliable?
The price and inventory of 1.5KE7.5A-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 1.5KE7.5A-E3/73 is usually 5 days.
3.What payment methods are accepted for 1.5KE7.5A-E3/73?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE7.5A-E3/73 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE7.5A-E3/73?
1.5KE7.5A-E3/73 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE7.5A-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 1.5KE7.5A-E3/73?
For technical support, including 1.5KE7.5A-E3/73 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE7.5A-E3/73 requirements.
6.How does Aetrix verify that 1.5KE7.5A-E3/73 is sourced from the original manufacturer or authorized distributors?
All 1.5KE7.5A-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 1.5KE7.5A-E3/73 meets industry standards.
7.What is the process for return or replacement of 1.5KE7.5A-E3/73?
All 1.5KE7.5A-E3/73 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE7.5A-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 1.5KE7.5A-E3/73 part is unused and in its original packaging.
Return procedure for 1.5KE7.5A-E3/73:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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