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Vishay General Semiconductor - Diodes Division 1.5KE7.5-E3/54
- Part No.:
- 1.5KE7.5-E3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE7.5-E3/54.pdf
- Description:
- TVS DIODE 6.05VWM 11.7VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:2,375
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Product details
Overview
1.5KE7.5-E3/54 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 at 10 mA, 6.40 V maximum standoff voltage, 11.3 V clamping voltage at 133 A peak pulse current, and 1500 W peak pulse power capability with 10/1000 µs waveform. It is used in automotive body control modules to protect 5 V microcontroller I/O pins against load dump and inductive switching transients.
For engineers reviewing the 1.5KE7.5-E3/54 datasheet, 1.5KE7.5-E3/54 pinout, 1.5KE7.5-E3/54 application, or 1.5KE7.5-E3/54 equivalent, this page delivers verified electrical parameters, thermal derating behavior, clamping performance under surge conditions, RoHS-compliant packaging details, and direct alternative part comparisons - all specific to the 1.5KE7.5-E3/54 unidirectional TVS configuration.
Technical Context
This device operates as a silicon avalanche diode with glass passivated junction, delivering sub-nanosecond response time (<1 ns) and low incremental surge resistance to clamp fast-rising transients before sensitive downstream circuitry is damaged. Its unidirectional polarity uses a cathode band marking and exhibits 3.5 V forward voltage at 100 A surge current.
The 1.5KE7.5-E3/54 is rated for -55 °C to +175 °C operating junction temperature, with thermal resistance of 75 °C/W (junction-to-ambient) and 15.4 °C/W (junction-to-lead), enabling reliable operation on PCBs without heatsinking under typical 1-pulse-per-minute surge duty cycles.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Breakdown Voltage VBR | 7.13 V to 7.88 V at 10 mA - defines minimum voltage at which avalanche conduction begins; ensures reliable triggering above normal 5 V rail noise. |
| Standoff Voltage VWM | 6.40 V - maximum continuous reverse working voltage; guarantees no leakage conduction during nominal 5 V system operation. |
| Clamping Voltage VC | 11.3 V at 133 A (10/1000 µs) - limits transient voltage seen by protected ICs; keeps downstream logic within absolute maximum ratings. |
| Peak Pulse Power PPPM | 1500 W - sustains single high-energy surges (e.g., ISO 7637-2 Pulse 1/2a/5a) without failure; validated per JEDEC JESD22-A114. |
| Leakage Current ID | <500 µA at 6.40 V - negligible standby power loss; avoids battery drain in always-on automotive modules. |
| Junction Temperature Range | -55 °C to +175 °C - supports under-hood deployment in engine control units and transmission control modules. |
| Package | Case Style 1.5KE - axial-leaded DO-201AD package; compatible with standard through-hole reflow or wave soldering (275 °C, 10 s max). |
Pinout & Package
1.5KE7.5-E3/54 uses the DO-201AD (Case Style 1.5KE) axial-leaded package with matte tin-plated leads. The cathode is marked by a color band on one end; the opposite end is anode. No polarity marking on bidirectional variants - not applicable here, as 1.5KE7.5-E3/54 is unidirectional.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (unmarked end) | Current entry terminal during forward conduction; connected to ground or low-side reference in clamping configuration. | Enables low-impedance path to ground when transient exceeds VBR; must be routed with minimal inductance to preserve clamping speed. |
| Cathode (banded end) | Current exit terminal during reverse-biased clamping; connected to protected line (e.g., 5 V rail or I/O trace). | Acts as high-impedance node until breakdown; placement adjacent to IC pin reduces loop inductance and improves ESD/lightning suppression efficacy. |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated chip junction | Ensures stable VBR tolerance (±5%) across temperature and lifetime; eliminates moisture-induced parameter drift in humid environments. |
| 1500 W peak pulse power (10/1000 µs) | Withstands automotive load dump pulses (ISO 7637-2 Pulse 5a) up to 120 V/100 ms without degradation; validated at 0.01% duty cycle. |
| Sub-nanosecond response time | Clamps transients within 1 ns - faster than MOVs or polymer-based protectors - preserving integrity of high-speed digital interfaces. |
| RoHS-compliant, commercial grade (E3 suffix) | Meets JESD201 Class 1A whisker test; suitable for consumer, industrial, and non-safety-critical automotive applications. |
| Low incremental surge resistance | Minimizes VC overshoot during high di/dt events; measured clamping ratio (VC/VBR) = 1.59 supports robust margin over 5 V logic thresholds. |
Applications
| Automotive Body Control Module (BCM) | Industrial PLC Digital Input Card |
|---|---|
Use Scenario: Protects 5 V microcontroller GPIO pins from relay coil flyback and LIN bus coupling transients in door module ECUs. IC Role / Device Role / Timing Role: Unidirectional clamping diode placed between I/O pin and chassis ground, triggered only during positive-going overvoltage events. Use Value: Limits transient voltage to ≤11.3 V, preventing latch-up or gate oxide rupture in 5 V CMOS inputs while maintaining <500 µA leakage at steady state. |
Use Scenario: Shields 24 V digital input optocoupler front-end from field-wiring induced surges in factory automation cabinets. IC Role / Device Role / Timing Role: Primary overvoltage clamp on the input side of series current-limiting resistor and opto-LED. Use Value: Absorbs 1500 W surge energy without degradation, enabling compliance with IEC 61000-4-5 Level 3 (2 kV line-earth) immunity testing. |
| Consumer Appliance Motor Drive Board | Telecom Power Supply Front-End |
Use Scenario: Guards MCU reset line and UART traces against brush-commutator noise in washing machine motor inverters. IC Role / Device Role / Timing Role: Fast-response shunt protector located directly at connector entry point, minimizing trace inductance. Use Value: Sub-ns clamping action prevents false resets or data corruption during 100–500 ns commutation spikes, with no impact on normal 3.3 V logic levels. |
Use Scenario: Suppresses lightning-induced surges on -48 V telecom rectifier output feeding base station backplane. IC Role / Device Role / Timing Role: Secondary-level TVS on DC output rail, coordinated with upstream GDT and MOV stages. Use Value: Provides precise 11.3 V clamping ceiling to prevent overvoltage stress on downstream DC-DC converters rated for 12 V max input. |
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 (SMB), 7.0 V VBR min, 11.2 V VC at 103 A, 600 W PPPM. | Lower peak power rating; suited for space-constrained PCBs where 1500 W is not required. | Select SMBJ7.0A when board area is limited and surge threat level is ≤IEC 61000-4-5 Level 2; not drop-in due to different footprint and lower energy handling. |
| 1.5KE7.5AHE3_B | Same 1.5KE package and electrical specs, but AEC-Q101 qualified and HE3 whisker-tested (Class 2). | Approved for automotive safety-critical systems (e.g., ADAS sensors); requires qualification documentation. | Choose 1.5KE7.5AHE3_B for production in automotive OEM programs requiring PPAP and AEC-Q101 evidence; identical pinout and layout. |
Compared with 1.5KE7.5-E3/54, SMBJ7.0A trades peak power and thermal mass for compactness, while 1.5KE7.5AHE3_B adds automotive qualification without altering electrical or mechanical behavior - making it a direct upgrade path for certified designs.
Availability
1.5KE7.5-E3/54 is available at Aetrix Electronics and suitable for automotive body electronics, industrial PLC input protection, and telecom power supply front-end designs requiring stable component supply, consistent parametric performance, and long-term manufacturing continuity.
Supply support for 1.5KE7.5-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, power handling, and automotive-grade qualification.
The 1.5KE series was engineered for high-energy transient suppression in harsh environments, targeting automotive, industrial, and telecom infrastructure applications where robustness against lightning, load dump, and ESD is mandatory.
FAQ
What is the breakdown voltage range of the 1.5KE7.5-E3/54?
The 1.5KE7.5-E3/54 has a guaranteed breakdown voltage (VBR) range of 7.13 V to 7.88 V at 10 mA test current, per Vishay Document Number 88301. This tight tolerance ensures predictable clamping onset across production lots and temperature extremes, critical for protecting 5 V logic circuits without premature conduction during normal operation.
Is the 1.5KE7.5-E3/54 suitable for automotive applications?
The 1.5KE7.5-E3/54 is rated for -55 °C to +175 °C junction temperature and meets JESD201 Class 1A whisker testing, making it appropriate for non-safety-critical automotive use such as body control modules and infotainment power rails. For AEC-Q101–qualified deployments, the 1.5KE7.5AHE3_B variant of the same family should be selected instead of the 1.5KE7.5-E3/54.
What is the clamping voltage of the 1.5KE7.5-E3/54 under surge conditions?
At its rated peak pulse current of 133 A (10/1000 µs waveform), the 1.5KE7.5-E3/54 clamps to a maximum of 11.3 V. This value is measured per JEDEC standards and defines the upper voltage limit imposed on protected circuitry during transient events - essential for ensuring compatibility with 5 V logic families' absolute maximum ratings.
Does the 1.5KE7.5-E3/54 have polarity markings?
Yes - the 1.5KE7.5-E3/54 is a unidirectional TVS diode with a visible cathode band on one lead end. That banded terminal connects to the protected line (e.g., 5 V rail), while the unmarked lead connects to ground. Bidirectional versions use "CA" suffixes (e.g., 1.5KE7.5CA) and lack polarity markings; the 1.5KE7.5-E3/54 is not bidirectional.
What package type does the 1.5KE7.5-E3/54 use?
The 1.5KE7.5-E3/54 uses the DO-201AD axial-leaded package (Case Style 1.5KE), with 0.375" (9.5 mm) lead length and 0.210" (5.3 mm) body diameter. It is RoHS-compliant, matte tin-plated, and rated for solder dip at 275 °C for up to 10 seconds - fully compatible with standard through-hole assembly processes.
1.5KE7.5-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:
- 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-E3/54 FAQ
1.How can I place an order for 1.5KE7.5-E3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE7.5-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 1.5KE7.5-E3/54 reliable?
The price and inventory of 1.5KE7.5-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 1.5KE7.5-E3/54 is usually 5 days.
3.What payment methods are accepted for 1.5KE7.5-E3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE7.5-E3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE7.5-E3/54?
1.5KE7.5-E3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE7.5-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 1.5KE7.5-E3/54?
For technical support, including 1.5KE7.5-E3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE7.5-E3/54 requirements.
6.How does Aetrix verify that 1.5KE7.5-E3/54 is sourced from the original manufacturer or authorized distributors?
All 1.5KE7.5-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 1.5KE7.5-E3/54 meets industry standards.
7.What is the process for return or replacement of 1.5KE7.5-E3/54?
All 1.5KE7.5-E3/54 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE7.5-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 1.5KE7.5-E3/54 part is unused and in its original packaging.
Return procedure for 1.5KE7.5-E3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE7.5-E3/54 Tags
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