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Vishay General Semiconductor - Diodes Division 1.5KE7.5A-E3/54
- Part No.:
- 1.5KE7.5A-E3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE7.5A-E3/54.pdf
- Description:
- TVS DIODE 6.4VWM 11.3VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:1,170
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Product details
Overview
1.5KE7.5A-E3/54 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 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 with 10/1000 µs waveform, and operates across -55 °C to +175 °C junction temperature range - used in automotive power supply input stages and industrial sensor interface protection.
For engineers reviewing the 1.5KE7.5A-E3/54 datasheet, 1.5KE7.5A-E3/54 pinout, 1.5KE7.5A-E3/54 application, or 1.5KE7.5A-E3/54 equivalent, this page delivers verified electrical parameters, thermal derating behavior, clamping performance under surge conditions, RoHS-compliant packaging details, 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 optimized for fast response (<1 ns) and low incremental surge resistance. Its clamping action limits transient-induced voltage excursions to ≤11.3 V at 133 A, enabling reliable protection of downstream MOSFETs and ICs against inductive switching spikes and lightning-induced surges.
The device complies with JEDEC standards for transient suppression and supports repetitive surge duty cycles up to 0.01 % at 25 °C ambient. Thermal resistance from junction to lead is 15.4 °C/W, allowing effective heat dissipation through PCB copper pours or short lead traces without external heatsinking.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 7.13 V / 7.88 V at 10 mA test current - defines precise voltage threshold where avalanche conduction begins, critical for matching system overvoltage trip margins. |
| VWM | 6.40 V maximum - ensures no leakage conduction during normal 5–6 V rail operation, preserving standby power integrity. |
| VC @ IPPM | 11.3 V at 133 A peak pulse current - guarantees downstream components see ≤11.3 V during worst-case 1500 W transients, protecting 12 V logic interfaces. |
| PPPM | 1500 W with 10/1000 µs waveform - sustains high-energy surges common in automotive load-dump and industrial motor drive environments. |
| IFSM | 200 A non-repetitive forward surge current (8.3 ms half-sine) - handles single-event inrush or fault currents without bond wire failure. |
| TJ range | -55 °C to +175 °C - supports under-hood automotive, industrial control cabinet, and outdoor telecom equipment deployments. |
| RθJL | 15.4 °C/W - enables thermal design using standard PCB copper area; no heatsink required for intermittent surge duty. |
Pinout & Package
Package: Axial-lead DO-201AD (Case Style 1.5KE), 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 | Current entry point during reverse-biased transient clamp | Connected to protected line (e.g., 12 V rail); must be routed with low-inductance trace to minimize overshoot. |
| Cathode | Current exit point during avalanche conduction | Connected to ground reference plane; requires solid low-impedance return path to sustain clamping performance. |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Enables stable VBR tolerance (±5 %) and long-term reliability under thermal cycling and humidity exposure. |
| 1500 W peak pulse power (10/1000 µs) | Supports IEC 61000-4-5 Level 4 (4 kV) surge immunity without cascaded protection stages. |
| Clamping voltage ≤11.3 V at 133 A | Protects 12 V-rated CAN transceivers, microcontrollers, and gate drivers from destructive overvoltage events. |
| RoHS-compliant E3 suffix | Meets JESD 201 Class 1A whisker resistance, suitable for lead-free reflow and wave soldering processes. |
| Operating TJ up to +175 °C | Validates use in engine control units (ECUs), power inverters, and other high-ambient-temperature applications. |
Applications
| Automotive Power Input Protection | Industrial Sensor Signal Line Protection |
|---|---|
Use Scenario: 12 V battery feed to engine control unit exposed to ISO 7637-2 pulse 5a (load dump). IC Role / Device Role / Timing Role: Primary clamping element absorbing >1000 W surge energy within <1 ns to prevent MOSFET drain-source breakdown. Use Value: Limits rail voltage to ≤11.3 V during 133 A transient, maintaining functional safety of 12 V logic and analog circuitry. |
Use Scenario: 4–20 mA current loop interface in factory automation PLC I/O module. IC Role / Device Role / Timing Role: Unidirectional TVS placed across loop terminals to shunt induced lightning surges on field wiring. Use Value: Clamps transients before they reach precision op-amps and ADC front-ends, preserving measurement accuracy and preventing latch-up. |
| Consumer Power Adapter Output Protection | Telecom DC Power Distribution Board |
Use Scenario: Secondary-side 5 V output of wall adapter subjected to ESD and capacitive coupling noise. IC Role / Device Role / Timing Role: Fast-response TVS suppressing sub-100 ns ESD events per IEC 61000-4-2 Level 4 (8 kV contact). Use Value: Prevents damage to USB controller ICs and LDO regulators by limiting voltage excursion to ≤11.3 V at full rated current. |
Use Scenario: -48 V DC distribution bus in central office equipment exposed to induced surges from nearby AC mains. IC Role / Device Role / Timing Role: Standoff-rated TVS installed at board edge to divert common-mode surges before entering backplane routing. Use Value: Maintains -48 V rail integrity below -55 V absolute minimum, ensuring uninterrupted operation of line cards and switching fabric. |
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 with lower surge energy requirements (IEC 61000-4-5 Level 2) | Select SMBJ7.0A when board area is limited and peak surge current remains ≤53 A; not recommended for automotive load-dump duty. |
| 1.5KE7.5CA | Bidirectional variant with same VBR range but symmetrical clamping in both polarities; VC = 12.0 V @ 125 A | Required for AC-coupled or floating signal lines (e.g., RS-485, Ethernet PHY) where polarity reversal occurs | Choose 1.5KE7.5CA only when protecting bidirectional data paths; unidirectional 1.5KE7.5A-E3/54 offers tighter VC and higher IPPM for DC rails. |
Compared with SMBJ7.0A and 1.5KE7.5CA, the 1.5KE7.5A-E3/54 delivers higher surge current handling (133 A vs. 53 A) and superior thermal robustness (RθJL = 15.4 °C/W) in axial-leaded form factor - making it optimal for high-energy, high-temperature DC power line protection where PCB real estate permits.
Availability
1.5KE7.5A-E3/54 is available at Aetrix Electronics and suitable for automotive power modules, industrial sensor interfaces, consumer power adapters, and telecom DC distribution boards requiring stable component supply and long-lifecycle support.
Supply support for 1.5KE7.5A-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 high-reliability diodes, MOSFETs, optoelectronics, and passive components for automotive, industrial, and computing markets.
The 1.5KE series was engineered specifically for high-power transient suppression in harsh environments, targeting applications demanding 1500 W surge capability, extended temperature operation, and AEC-Q101 qualification readiness.
FAQ
What is the breakdown voltage tolerance for 1.5KE7.5A-E3/54?
The 1.5KE7.5A-E3/54 has a specified breakdown voltage 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 VBR window ensures consistent clamping onset across production lots and supports precise overvoltage margining in 12 V system designs. The parameter is measured per JEDEC standard and validated at 25 °C ambient.
Does 1.5KE7.5A-E3/54 meet automotive qualification standards?
The base 1.5KE7.5A-E3/54 is commercial-grade and RoHS-compliant but not AEC-Q101 qualified. However, Vishay offers the 1.5KE7.5AHE3_B variant - identical electrically but with full AEC-Q101 qualification for stress testing including temperature cycling, HTRB, and ESD. For automotive applications requiring certified reliability, specify the HE3_B suffix version instead of E3/54.
What is the maximum clamping voltage of 1.5KE7.5A-E3/54 under surge conditions?
The 1.5KE7.5A-E3/54 exhibits a maximum clamping voltage (VC) of 11.3 V when subjected to its rated peak pulse current of 133 A using the standardized 10/1000 µs waveform. This value is guaranteed across the full operating temperature range and forms the basis for downstream component voltage rating selection - for example, ensuring 12 V-rated ICs remain within safe operating area during surge events.
Can 1.5KE7.5A-E3/54 be used in bidirectional signal protection?
No - the 1.5KE7.5A-E3/54 is strictly unidirectional and must be oriented with cathode toward the protected circuit's ground reference. For bidirectional protection (e.g., RS-485, USB D+/D−), the 1.5KE7.5CA variant is required. Using the unidirectional 1.5KE7.5A-E3/54 on AC or floating lines risks forward conduction during negative transients and invalidates clamping performance.
What is the thermal resistance and how does it affect PCB layout for 1.5KE7.5A-E3/54?
The 1.5KE7.5A-E3/54 has a typical junction-to-lead thermal resistance (RθJL) of 15.4 °C/W. To maintain safe junction temperatures during repetitive surges, PCB layout must provide low-thermal-resistance paths: use ≥10 mm² copper pour per lead, avoid thermal relief on pads, and keep leads short (<9.5 mm). Exceeding RθJL limits risks premature thermal runaway during sustained surge duty.
1.5KE7.5A-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:
- 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-E3/54 FAQ
1.How can I place an order for 1.5KE7.5A-E3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE7.5A-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 1.5KE7.5A-E3/54 reliable?
The price and inventory of 1.5KE7.5A-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 1.5KE7.5A-E3/54 is usually 5 days.
3.What payment methods are accepted for 1.5KE7.5A-E3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE7.5A-E3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE7.5A-E3/54?
1.5KE7.5A-E3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE7.5A-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 1.5KE7.5A-E3/54?
For technical support, including 1.5KE7.5A-E3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE7.5A-E3/54 requirements.
6.How does Aetrix verify that 1.5KE7.5A-E3/54 is sourced from the original manufacturer or authorized distributors?
All 1.5KE7.5A-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 1.5KE7.5A-E3/54 meets industry standards.
7.What is the process for return or replacement of 1.5KE7.5A-E3/54?
All 1.5KE7.5A-E3/54 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE7.5A-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 1.5KE7.5A-E3/54 part is unused and in its original packaging.
Return procedure for 1.5KE7.5A-E3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE7.5A-E3/54 Tags
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