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Taiwan Semiconductor Corporation 1.5KE75A
- Part No.:
- 1.5KE75A
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE75A.pdf
- Description:
- TVS 1500W 75.1V 5% UNIDIR DO-201
- Quantity:
- Payment:
- Shipping:
Inventory:5,896
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Product details
Overview
1.5KE75A from Taiwan Semiconductor is a unidirectional 1500W transient voltage suppressor (TVS) diode with a nominal breakdown voltage of 75V, VBR = 71.3–78.8V at 1mA, VWM = 64.1V, and clamping voltage VC = 103V at 15A peak pulse current. It delivers fast response (<1.0ps), low dynamic impedance, and AEC-Q101 qualification for automotive-grade surge protection in power rails and I/O lines.
For engineers reviewing the 1.5KE75A datasheet, 1.5KE75A pinout, 1.5KE75A application, or 1.5KE75A equivalent, this part supports ISO 7637-2 Pulse 1/2a/2b/3a/3b compliance, operates across –55°C to +175°C junction temperature, and is packaged in DO-201 with cathode-band polarity marking for unidirectional use.
Technical Context
The 1.5KE75A functions as a unidirectional avalanche diode that enters conduction when reverse voltage exceeds its specified VBR range (71.3–78.8V), clamping transients to ≤103V at 15A. Its 1500W peak pulse power rating is defined per 10/1000μs waveform, with thermal derating above 25°C ambient per JEDEC-standard curves.
It exhibits <1μA blocking leakage at 64.1V (VWM), forward voltage ≤3.5V at 50A (per spec note for VBR ≤200V), and meets JESD201 Class 2 whisker resistance and UL 94V-0 flammability requirements in its DO-201 molded package.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR @ IT = 1mA | 71.3–78.8V - defines precise avalanche onset threshold for reliable overvoltage triggering |
| VWM | 64.1V - maximum continuous reverse operating voltage before leakage exceeds 1μA |
| VC @ IPP = 15A | 103V - clamped voltage during 10/1000μs surge, limiting downstream IC stress |
| PPK | 1500W - peak transient energy absorption capability under standardized surge waveform |
| Junction Temp Range | –55°C to +175°C - enables deployment in under-hood automotive and industrial power systems |
| Package | DO-201 - axial-leaded, through-hole package with tin-plated leads compliant to J-STD-002 |
| Response Time | <1.0ps - sub-picosecond turn-on ensures protection before sensitive circuitry sustains damage |
Pinout & Package
1.5KE75A uses the DO-201 package: axial-leaded, cylindrical epoxy-molded body with cathode band marking on one end. Leads are pure tin-plated, solderable per J-STD-002, and meet JESD201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (unmarked end) | Forward current path / reference node | Connected to lower-potential side (e.g., ground or return rail) in unidirectional configuration |
| Cathode (banded end) | Avalanche conduction terminal | Connected to protected line (e.g., 12V supply or signal); conducts during reverse overvoltage events |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive electronics per stress-test requirements including temperature cycling, HTRB, and ESD |
| ISO 7637-2 compliance | Withstands Pulse 1 (inductive load dump), Pulse 2a/2b (battery disconnect), and Pulse 3a/3b (switching transients) |
| Low dynamic impedance | Enables tighter clamping and reduced overshoot during high-di/dt surges |
| RoHS & halogen-free | Meets IEC 61249-2-21 and EU RoHS Directive 2011/65/EU for environmentally constrained applications |
| UL 94V-0 molding | Epoxy compound self-extinguishes within 10 seconds after flame removal, enhancing system fire safety |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12V/24V battery-fed ECUs against load dump and alternator transients per ISO 7637-2 Pulse 1 and Pulse 2a. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power input and ground to clamp surges before they reach DC-DC converters and microcontrollers. Use Value: Limits transient voltage to ≤103V, preventing latch-up or gate oxide rupture in downstream 3.3V/5V logic powered from protected rail. | Use Scenario: Safeguarding analog sensor inputs (e.g., pressure, temperature) in PLC modules exposed to EFT and cable discharge events. IC Role / Device Role / Timing Role: TVS mounted at connector entry point to shunt fast transients before reaching precision op-amps and ADC front-ends. Use Value: Sub-1ps response ensures clamping occurs prior to propagation into signal chain, preserving measurement integrity and avoiding false triggers. |
| LED Driver Output Protection | Motor Control Board DC Bus Clamp |
Use Scenario: Shielding constant-current LED driver outputs from inductive kickback when driving long cables or solenoid loads. IC Role / Device Role / Timing Role: Unidirectional TVS connected across output terminals to absorb reverse-energy spikes during switch-off. Use Value: 1500W surge rating handles repetitive switching surges without degradation; 64.1V VWM avoids leakage interference with typical 48V LED strings. | Use Scenario: Clamping voltage spikes on 48V or 72V DC bus lines caused by MOSFET switching in BLDC motor controllers. IC Role / Device Role / Timing Role: TVS placed between bus+ and bus− to limit overvoltage during regenerative braking or short-circuit events. Use Value: 103V clamping voltage provides ≥2× margin over 48V nominal bus, ensuring IGBT/gate drivers remain within safe operating area. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Littelfuse SMAJ75A | Same DO-214AC (SMA) package; VBR = 78.8–87.0V; VC = 121V @ 12.3A; 400W rating | Lower power rating and higher clamping voltage reduce effectiveness in high-energy automotive pulses | Select only where space-constrained PCB layout favors surface-mount and surge energy is ≤400W |
| ON Semiconductor 1.5SMC75A | DO-214AB (SMC) package; VBR = 78.8–87.0V; VC = 121V @ 12.3A; 1500W rating | Same power rating but larger SMC footprint; slightly higher VC increases stress on protected ICs | Prefer when existing design uses SMC footprint or requires same power handling with alternate sourcing |
Compared with SMAJ75A and 1.5SMC75A, the 1.5KE75A offers lower clamping voltage (103V vs. ≥121V), axial DO-201 through-hole compatibility for high-reliability mechanical mounting, and tighter VBR tolerance-making it optimal for automotive and industrial systems demanding minimal let-through voltage and proven thermal robustness.
Availability
1.5KE75A is available at Aetrix Electronics and suitable for automotive ECU protection, industrial sensor interface hardening, and LED driver output safeguarding requiring stable component supply and AEC-Q101 traceability.
Supply support for 1.5KE75A 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 semiconductor manufacturer headquartered in Hsinchu, Taiwan, specializing in discrete power devices, TVS diodes, rectifiers, and thyristors since 1979.
The 1.5KE series was designed specifically for high-energy transient suppression in automotive, industrial, and transportation systems-emphasizing AEC-Q101 reliability, ISO 7637-2 compliance, and robust DO-201 packaging for harsh-environment deployment.
FAQ
What is the breakdown voltage range of the 1.5KE75A?
The 1.5KE75A has a guaranteed breakdown voltage (VBR) range of 71.3V to 78.8V at a test current of 1mA, measured per ANSI/IEEE C62.35 standards. This tight tolerance ensures consistent overvoltage triggering behavior across production lots and temperature extremes, critical for repeatable protection in automotive power systems where the 1.5KE75A is commonly deployed.
Is the 1.5KE75A suitable for bidirectional transient suppression?
No-the 1.5KE75A is a unidirectional TVS diode, indicated by the absence of "CA" suffix and explicit specification of forward voltage (VF ≤3.5V) and unidirectional surge current (IFSM = 200A). For bidirectional protection, select the 1.5KE75CA variant, which lacks polarity marking and supports symmetrical clamping in both directions.
What is the maximum clamping voltage of the 1.5KE75A under surge conditions?
The 1.5KE75A clamps to a maximum of 103V at a peak pulse current (IPP) of 15A under the standard 10/1000μs waveform. This value is measured at TA = 25°C and represents the upper limit of voltage imposed on protected circuitry during worst-case surge events, directly informing safe operating margins for downstream ICs.
Does the 1.5KE75A meet automotive qualification standards?
Yes-the 1.5KE75A is explicitly AEC-Q101 qualified, as confirmed in the manufacturer's documentation. This qualification covers stress tests including high-temperature reverse bias (HTRB), temperature cycling, and electrostatic discharge (ESD), validating its suitability for under-hood and chassis-mounted automotive electronics where the 1.5KE75A is routinely applied.
What package type does the 1.5KE75A use, and how is polarity identified?
The 1.5KE75A uses the DO-201 axial-leaded package with a cathode band marking on one end. The banded end is the cathode and must be connected to the line being protected (e.g., 12V rail), while the unmarked end is the anode, typically tied to ground. This physical marking eliminates orientation errors during manual or automated assembly of the 1.5KE75A.
1.5KE75A 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):
- 64.1V
- Voltage - Breakdown (Min):
- 71.3V
- Voltage - Clamping (Max) @ Ipp:
- 103V
- Current - Peak Pulse (10/1000µs):
- 15A
- 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:
- DO-201
1.5KE75A FAQ
1.How can I place an order for 1.5KE75A through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE75A 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 1.5KE75A reliable?
The price and inventory of 1.5KE75A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE75A is usually 5 days.
3.What payment methods are accepted for 1.5KE75A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE75A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE75A?
1.5KE75A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE75A 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 1.5KE75A?
For technical support, including 1.5KE75A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE75A requirements.
6.How does Aetrix verify that 1.5KE75A is sourced from the original manufacturer or authorized distributors?
All 1.5KE75A 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 1.5KE75A meets industry standards.
7.What is the process for return or replacement of 1.5KE75A?
All 1.5KE75A units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE75A, 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 1.5KE75A part is unused and in its original packaging.
Return procedure for 1.5KE75A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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