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Vishay General Semiconductor - Diodes Division 1.5KE7.5-E3/73
- Part No.:
- 1.5KE7.5-E3/73
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE7.5-E3/73.pdf
- Description:
- TVS DIODE 6.05VWM 11.7VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:4,059
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Product details
Overview
1.5KE7.5-E3/73 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 7.13 V to 7.88 V breakdown voltage (VBR) at 10 mA, 6.40 V maximum stand-off 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 protection.
For engineers reviewing the 1.5KE7.5-E3/73 datasheet, 1.5KE7.5-E3/73 pinout, 1.5KE7.5-E3/73 application, or 1.5KE7.5-E3/73 equivalent, this page delivers verified electrical parameters, JEDEC 1.5KE package details, clamping performance under surge conditions, thermal derating behavior, and direct alternatives for ESD/lightning transient suppression in 12 V and 24 V systems.
Technical Context
This unidirectional TVS diode uses a glass-passivated silicon junction to achieve sub-nanosecond response time (<1 ns) and low incremental surge resistance. Its clamping action begins at VBR = 7.13–7.88 V and limits transient voltage to ≤11.3 V at 133 A (10/1000 µs waveform), enabling robust protection of downstream MOSFETs and ICs without crowbar behavior.
Rated for 1500 W peak pulse power and 6.5 W steady-state dissipation on infinite heatsink, it supports repetitive surge events at ≤0.01% duty cycle. Thermal resistance is 15.4 °C/W (junction-to-lead) and 75 °C/W (junction-to-ambient), with solderability validated per J-STD-002 and JESD 22-B102.
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 controlled 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 10/1000 µs surge, directly limiting stress on protected circuitry |
| PPPM | 1500 W - peak transient power handling capability, enabling protection against IEC 61000-4-5 Level 4 surges |
| IFSM | 200 A (8.3 ms half-sine) - surge current rating for unidirectional forward conduction during fault events |
| TJ range | –55 °C to +175 °C - extended junction temperature operation suitable for under-hood automotive and industrial environments |
| Package | JEDEC DO-201AD (Case Style 1.5KE) - axial-leaded, epoxy-molded package with UL 94 V-0 flammability rating |
Pinout & Package
Package: JEDEC DO-201AD (Case Style 1.5KE), axial-leaded, molded epoxy body with matte tin-plated leads. Cathode identified by color band on body end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential side (e.g., ground or return path) in unidirectional configuration |
| Cathode | Reverse-biased clamping terminal | Connected to protected line (e.g., 12 V rail); color band marks cathode end for polarity verification |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Enables stable VBR tolerance (±5%), low leakage (<500 µA at VWM), and long-term reliability under thermal cycling |
| 1500 W peak pulse power (10/1000 µs) | Supports high-energy transients such as ISO 7637-2 Pulse 5a/b and IEC 61000-4-5 Combination Wave (1.2/50 µs + 8/20 µs) |
| Sub-nanosecond response time | Clamps within <1 ns - faster than MOVs or polymer-based protectors, preserving signal integrity in high-speed interfaces |
| AEC-Q101 qualified option available | HE3 suffix variants meet automotive qualification requirements for temperature cycling, humidity, and mechanical shock |
| RoHS-compliant (E3 suffix) | Meets JESD 201 Class 1A whisker test and J-STD-002 solderability standards for lead-free assembly |
Applications
| Automotive Power Input Protection | Industrial Sensor Signal Line Protection |
|---|---|
Use Scenario: 12 V battery feed to engine control unit (ECU) exposed to load dump and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power rail and ground to clamp positive transients above 7.88 V. Use Value: Limits voltage to ≤11.3 V during 133 A surge, preventing gate oxide damage to 12 V-rated microcontrollers and CAN transceivers. |
Use Scenario: 4–20 mA analog output line from pressure sensor in factory automation cabinet. IC Role / Device Role / Timing Role: TVS connected across signal and return to suppress ESD and inductive switching noise. Use Value: Clamps fast transients (<1 ns) without affecting 4–20 mA loop accuracy or introducing offset due to low leakage (<500 µA). |
| Consumer Power Adapter Output Protection | Telecom DC Power Feeds |
Use Scenario: 5 V/9 V USB-C PD adapter output feeding portable medical monitor. IC Role / Device Role / Timing Role: Unidirectional TVS on VBUS line to absorb plug-in surges and contact ESD. Use Value: Withstands 1500 W pulses while maintaining VWM = 6.40 V - ensures no false triggering during normal 5–9 V operation. |
Use Scenario: -48 V DC power input to telecom base station card subjected to lightning-induced surges. IC Role / Device Role / Timing Role: TVS used in series with fuse on negative rail to limit let-through energy to downstream DC/DC converters. Use Value: 175 °C max junction temperature enables reliable operation in sealed, high-ambient telecom enclosures. |
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 | DO-214AA package; lower PPPM = 600 W; VBR = 7.78–8.6 V; VC = 12.0 V @ 50 A | Better suited for space-constrained PCBs; lower surge capacity limits use to Level 2/3 IEC 61000-4-5 only | Select SMBJ7.0A when board area is critical and peak surge current remains below 50 A. |
| 1.5KE7.5AHE3_B | Same 1.5KE package and electrical specs; AEC-Q101 qualified; HE3 suffix denotes automotive-grade tin whisker mitigation | Required for automotive OEM designs needing PPAP documentation and extended temperature validation | Choose 1.5KE7.5AHE3_B for automotive applications requiring formal qualification evidence and traceable lot data. |
Compared with 1.5KE7.5-E3/73, SMBJ7.0A trades surge robustness for footprint reduction, while 1.5KE7.5AHE3_B adds automotive qualification without altering clamping performance - enabling direct substitution where AEC-Q101 compliance is mandated.
Availability
1.5KE7.5-E3/73 is available at Aetrix Electronics and suitable for automotive power input protection, industrial sensor interface hardening, and consumer DC adapter output safeguarding requiring stable component supply and RoHS-compliant sourcing.
Supply support for 1.5KE7.5-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, and protection devices with emphasis on reliability, power handling, and automotive qualification.
The 1.5KE series was engineered for high-energy transient suppression in harsh environments - targeting automotive, industrial, and telecom infrastructure where 1500 W surge immunity and wide temperature operation are mandatory.
FAQ
What is the breakdown voltage tolerance of the 1.5KE7.5-E3/73?
The 1.5KE7.5-E3/73 has a specified breakdown voltage (VBR) range of 7.13 V to 7.88 V at 10 mA test current, representing a ±5% tolerance around the nominal 7.5 V rating. This tight tolerance ensures predictable clamping onset across production lots and supports precise system-level overvoltage margining in designs using the 1.5KE7.5-E3/73.
Is the 1.5KE7.5-E3/73 suitable for bidirectional transient protection?
No - the 1.5KE7.5-E3/73 is a unidirectional TVS diode, intended for DC line protection where polarity is fixed. Bidirectional variants (e.g., 1.5KE7.5CA) exist in the same family but are distinct part numbers. Using the 1.5KE7.5-E3/73 on AC or floating signals would result in forward conduction during negative half-cycles, potentially causing failure. Always verify polarity alignment when deploying the 1.5KE7.5-E3/73.
What is the maximum clamping voltage of the 1.5KE7.5-E3/73 under surge conditions?
The 1.5KE7.5-E3/73 clamps to a maximum of 11.3 V at its rated peak pulse current of 133 A, measured with a 10/1000 µs waveform. This value is guaranteed per Vishay's datasheet and reflects worst-case voltage seen by downstream components during standardized surge testing - critical for validating safe operating area of protected ICs and MOSFETs in circuits using the 1.5KE7.5-E3/73.
Does the 1.5KE7.5-E3/73 meet automotive qualification standards?
The 1.5KE7.5-E3/73 itself is commercial-grade (E3 suffix). However, the functionally identical 1.5KE7.5AHE3_B variant is AEC-Q101 qualified and shares the same electrical specs and package. For automotive applications requiring formal qualification, engineers should specify the HE3_B version - the 1.5KE7.5-E3/73 is not certified to AEC-Q101 but remains suitable for non-automotive industrial and consumer use cases.
How does thermal derating affect the 1.5KE7.5-E3/73's power handling above 25 °C?
Per Vishay's derating curve (Fig. 5), the 1.5KE7.5-E3/73's steady-state power dissipation drops linearly from 6.5 W at 25 °C ambient to zero at 175 °C junction temperature. At 75 °C lead temperature, it sustains ~4.5 W; at 125 °C, ~2.0 W. This derating must be applied when calculating safe continuous power in enclosed or high-ambient environments where the 1.5KE7.5-E3/73 operates without forced cooling.
1.5KE7.5-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):
- 6.05V
- Voltage - Breakdown (Min):
- 6.75V
- Voltage - Clamping (Max) @ Ipp:
- 11.7V
- Current - Peak Pulse (10/1000µs):
- 128A
- 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
1.5KE7.5-E3/73 FAQ
1.How can I place an order for 1.5KE7.5-E3/73 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE7.5-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 1.5KE7.5-E3/73 reliable?
The price and inventory of 1.5KE7.5-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 1.5KE7.5-E3/73 is usually 5 days.
3.What payment methods are accepted for 1.5KE7.5-E3/73?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE7.5-E3/73 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE7.5-E3/73?
1.5KE7.5-E3/73 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE7.5-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 1.5KE7.5-E3/73?
For technical support, including 1.5KE7.5-E3/73 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE7.5-E3/73 requirements.
6.How does Aetrix verify that 1.5KE7.5-E3/73 is sourced from the original manufacturer or authorized distributors?
All 1.5KE7.5-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 1.5KE7.5-E3/73 meets industry standards.
7.What is the process for return or replacement of 1.5KE7.5-E3/73?
All 1.5KE7.5-E3/73 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE7.5-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 1.5KE7.5-E3/73 part is unused and in its original packaging.
Return procedure for 1.5KE7.5-E3/73:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE7.5-E3/73 Tags
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