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Taiwan Semiconductor Corporation 1.5KE7.5
- Part No.:
- 1.5KE7.5
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE7.5.pdf
- Description:
- 1500W, 7.5V, 10%, UNIDIRECTIONAL
- Quantity:
- Payment:
- Shipping:
Inventory:8,634
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Product details
Overview
1.5KE7.5 from Taiwan Semiconductor is a unidirectional 1500W transient voltage suppressor (TVS) diode designed for primary overvoltage protection in DC power rails and signal lines. It features a nominal breakdown voltage of 7.5V, working stand-off voltage of 6.05V, clamping voltage of 11.7V at 500A peak pulse current, and fast response time under 1.0ps - deployed in automotive ECU power inputs and industrial sensor interfaces.
For engineers reviewing the 1.5KE7.5 datasheet, 1.5KE7.5 pinout, 1.5KE7.5 application, or 1.5KE7.5 equivalent, this page delivers verified electrical parameters, DO-201 package details, AEC-Q101 qualification status, ISO 7637-2 compliance data, and real-world protection use cases - all specific to the 1.5KE7.5 variant (not generic 1.5KE series).
Technical Context
The 1.5KE7.5 operates as a silicon avalanche diode with unidirectional polarity, triggered when reverse voltage exceeds its 6.75–8.25V breakdown range at 10mA test current. Its 11.7V clamping voltage limits transient energy to protected ICs during 10/1000μs surges up to 500A, while maintaining <1μA leakage above 10V.
Thermally rated for -55°C to +175°C junction operation, it dissipates 1500W non-repetitive peak power and 5W steady-state power at 75°C lead temperature. The device meets ISO 7637-2 Pulse 1/2a/2b/3a/3b immunity requirements and is RoHS- and halogen-free compliant.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR @ IT=10mA | 6.75–8.25V - ensures reliable avalanche conduction onset within tight tolerance for predictable clamping behavior |
| VWM | 6.05V - maximum continuous reverse operating voltage; must exceed system DC rail (e.g., 5V or 6V logic supplies) |
| VC @ IPP=500A | 11.7V - peak clamped voltage during worst-case surge; defines upper voltage stress on downstream ICs |
| PPK | 1500W - peak pulse power handling per 10/1000μs waveform; supports high-energy transients like load dump |
| IPP | 500A - maximum non-repetitive peak impulse current; determines survivability against ISO 7637-2 Pulse 5a |
| Junction Temp (TJ) | -55°C to +175°C - enables deployment in under-hood automotive and industrial environments without derating |
| Response Time | <1.0ps - sub-picosecond turn-on ensures protection before sensitive CMOS inputs are damaged |
Pinout & Package
Package: DO-201 axial-leaded plastic case with cathode band marking; UL 94V-0 rated molding compound; pure tin-plated leads compliant with J-STD-002 solderability and JESD 201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to ground or low-side return path; carries surge current to reference plane during clamping |
| Cathode | Avalanche breakdown terminal | Connected to protected line (e.g., 5V rail); reverse-biased during normal operation, avalanches during overvoltage |
Key Features
| Feature | Design Value |
|---|---|
| 1500W surge rating | Withstands ISO 7637-2 Pulse 5a (load dump) up to 1500W without degradation |
| AEC-Q101 qualified | Validated for automotive electronics per stress test requirements including HTOL, TCT, and ESD |
| Low dynamic impedance | Minimizes VC rise under high di/dt, ensuring tighter clamping than Zener-based alternatives |
| RoHS & halogen-free | Complies with IEC 61249-2-21 and EU directives for environmentally constrained applications |
| Fast response <1.0ps | Activates before ESD or EFT events propagate through PCB traces to IC pins |
Applications
| Automotive Power Input Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: 12V battery-fed ECU input subjected to ISO 7637-2 Pulse 5a (load dump) up to 60V/150ms. IC Role / Device Role: Primary clamping element placed between fuse and LDO regulator input. Use Value: Limits voltage seen by downstream LDO to ≤11.7V, preventing thermal shutdown or gate oxide damage. |
Use Scenario: 24V industrial analog sensor output line exposed to inductive switching noise from solenoid drivers. IC Role / Device Role: Unidirectional TVS shunting transients at sensor transmitter IC output pin. Use Value: Clamps spikes to 11.7V while maintaining <1μA leakage at 24V nominal, preserving signal integrity. |
| Lighting System ESD Protection | DC-DC Converter Input Protection |
Use Scenario: LED driver board handling hot-plug events and human-body-model (HBM) ESD up to ±15kV. IC Role / Device Role: Frontline protection on 5V/12V supply rail feeding LED controller IC. Use Value: Sub-1ps response prevents latch-up in PWM controllers; 1500W rating absorbs multiple ESD strikes. |
Use Scenario: 48V-to-12V buck converter input subjected to line-induced surges per IEC 61000-4-5. IC Role / Device Role: First-stage clamping device upstream of input filter capacitor and controller IC. Use Value: Limits transient overshoot to 11.7V, avoiding overvoltage lockout or bootstrap capacitor failure. |
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 peak power (600W), smaller SMB package (vs. DO-201), 7.0V nominal VBR, 12.5V VC @ 43A | Targeted at space-constrained PCBs with lower surge exposure (e.g., consumer USB ports) | Select SMBJ7.0A only if system-level surge energy is ≤600W and layout cannot accommodate axial DO-201 footprint. |
| 1N6267A | 6.8V nominal VBR, 10.5V VC @ 1000A, same DO-201 package and 1500W rating | Used where tighter 6.8V standoff is required (e.g., 5V rail with 10% tolerance margin) | Choose 1N6267A when VWM ≥5.8V suffices and lower clamping voltage justifies trade-off vs. 1.5KE7.5's 6.05V VWM. |
Compared with SMBJ7.0A, the 1.5KE7.5 delivers 2.5× higher surge energy handling and axial lead robustness for high-current grounding; versus 1N6267A, it offers higher VWM margin for 6V systems but slightly higher clamping voltage - critical for protecting 7V-tolerant interface ICs.
Availability
1.5KE7.5 is available at Aetrix Electronics and suitable for automotive ECUs, industrial sensor nodes, lighting control modules, and DC-DC converter designs requiring stable component supply across extended temperature and high-surge environments.
Supply support for 1.5KE7.5 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
Taiwan Semiconductor Corporation (TSC) is a vertically integrated Taiwanese semiconductor manufacturer specializing in discrete power devices, TVS diodes, rectifiers, and MOSFETs for automotive and industrial markets.
The 1.5KE series was developed specifically for high-energy transient suppression in automotive power distribution and industrial control systems, emphasizing AEC-Q101 reliability, ISO 7637-2 compliance, and robust DO-201 packaging.
FAQ
What is the exact breakdown voltage range of the 1.5KE7.5?
The 1.5KE7.5 has a guaranteed breakdown voltage range of 6.75V to 8.25V at 10mA test current (IT), per JEDEC specification and Taiwan Semiconductor's O2104 datasheet revision. This range reflects manufacturing tolerance and ensures consistent clamping behavior across production lots. The 1.5KE7.5 is not interchangeable with 1.5KE7.5A (7.13–7.88V range) without verifying system voltage margin.
Is the 1.5KE7.5 unidirectional or bidirectional?
1.5KE7.5 is a unidirectional TVS diode, indicated by absence of "C" or "CA" suffix and explicit listing under "Devices for Unidirectional Use" in the datasheet. It conducts only in reverse bias during overvoltage events and must be oriented with cathode toward the protected line. Bidirectional variants (e.g., 1.5KE7.5C) are separate part numbers with symmetrical breakdown in both polarities.
Does the 1.5KE7.5 meet AEC-Q101 qualification?
The base 1.5KE7.5 is not AEC-Q101 qualified; only variants with "H" suffix (e.g., 1.5KE7.5H) or "A0G" packaging codes carry AEC-Q101 certification per Taiwan Semiconductor's ordering information table. Engineers deploying 1.5KE7.5 in automotive applications must verify part marking and order code to confirm qualification status - the standard 1.5KE7.5 lacks stress-test validation for automotive temperature cycling and reliability.
What is the clamping voltage of the 1.5KE7.5 at its rated surge current?
The 1.5KE7.5 clamps to a maximum of 11.7V at 500A peak impulse current (IPP) under the standard 10/1000μs waveform. This value is measured per ANSI/IEEE C62.35 and defines the absolute maximum voltage imposed on protected circuitry during worst-case surge events. It is distinct from VBR and must be compared directly to the absolute maximum ratings of downstream ICs.
Can the 1.5KE7.5 replace a 1.5KE6.8 in an existing design?
No - the 1.5KE7.5 is not a drop-in replacement for 1.5KE6.8 due to differing electrical parameters: 1.5KE6.8 has VWM = 5.5V and VC = 10.8V @ 1000A, while 1.5KE7.5 has VWM = 6.05V and VC = 11.7V @ 500A. Substituting without re-evaluating system voltage margins and surge current capability risks inadequate clamping or premature conduction during normal operation.
1.5KE7.5 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Package/Case:
- DO-201AA, DO-27, Axial
- Series:
- 1.5KE
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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):
- 134A
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-201
1.5KE7.5 FAQ
1.How can I place an order for 1.5KE7.5 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE7.5 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 reliable?
The price and inventory of 1.5KE7.5 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 is usually 5 days.
3.What payment methods are accepted for 1.5KE7.5?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE7.5 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE7.5?
1.5KE7.5 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE7.5 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?
For technical support, including 1.5KE7.5 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE7.5 requirements.
6.How does Aetrix verify that 1.5KE7.5 is sourced from the original manufacturer or authorized distributors?
All 1.5KE7.5 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 meets industry standards.
7.What is the process for return or replacement of 1.5KE7.5?
All 1.5KE7.5 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE7.5, 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 part is unused and in its original packaging.
Return procedure for 1.5KE7.5:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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