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Taiwan Semiconductor Corporation P4KE7.5A
- Part No.:
- P4KE7.5A
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
P4KE7.5A.pdf
- Description:
- TVS DIODE 6.4VWM 11.3VC DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:4,148
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Product details
Overview
P4KE7.5A from Taiwan Semiconductor is a unidirectional 400W transient voltage suppressor (TVS) diode designed for primary-side overvoltage clamping in DC power rails and signal lines. It features a nominal breakdown voltage of 7.5V, a working stand-off voltage of 6.40V, clamps to 11.3V at 37.0A peak pulse current, and delivers sub-nanosecond response time for ESD and EFT protection in automotive and industrial control circuits.
For engineers reviewing the P4KE7.5A datasheet, P4KE7.5A pinout, P4KE7.5A application, or P4KE7.5A equivalent, key selection criteria include its DO-41 package compatibility, 7.13–7.88V breakdown range at 10mA, <1μA leakage above 6.40V, 11.3V clamping performance under 10/1000μs surge, and AEC-Q101 qualification option for automotive-grade reliability.
Technical Context
The P4KE7.5A operates as a unidirectional avalanche diode with a cathode-band polarity marking and is rated for 400W non-repetitive peak pulse power per 10/1000μs waveform. Its junction temperature range spans −55°C to +175°C, and it exhibits a 0.061%/°C VBR temperature coefficient - critical for stable clamping across thermal environments.
It complies with ANSI/IEEE C62.35 surge standards and supports fast transient immunity per IEC 61000-4-4 (EFT) and IEC 61000-4-2 (ESD). With <1.0ps response from 0V to VBR, it protects sensitive IC inputs and microcontroller I/O pins without signal distortion or latency-induced timing errors.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 6.40 V - Maximum continuous reverse voltage before significant leakage; ensures no false triggering on 5V or 6V logic rails. |
| VBR @ 10 mA | 7.13–7.88 V - Verified breakdown range at standard test current; guarantees reliable turn-on during transients exceeding 7.13V. |
| IPPM | 37.0 A - Peak pulse current at 10/1000μs waveform; defines maximum surge energy (400W) the device safely absorbs. |
| VC @ IPPM | 11.3 V - Clamped voltage during full-rated surge; limits downstream voltage stress to ≤11.3V for connected ICs. |
| ID @ VWM | <1 μA - Reverse leakage at stand-off voltage; avoids excessive quiescent current in battery-powered systems. |
| TJMAX | +175°C - Maximum junction temperature; enables operation in under-hood automotive or high-ambient industrial enclosures. |
| Package | DO-204AL (DO-41) - Standard axial-leaded through-hole package; compatible with legacy PCB layouts and wave-soldering processes. |
Pinout & Package
DO-204AL (DO-41) package with axial leads: Cathode marked by band; anode and cathode terminals are non-polarized in function but directionally critical for unidirectional clamping. Leads are pure tin-plated and solderable per J-STD-002.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Ground reference terminal | Connected to system ground or low-side return path; completes clamping loop during transient events. |
| Cathode | Protected line input | Connected to the line being protected (e.g., 5V rail, sensor output); conducts avalanche current to ground when VIN exceeds VBR. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified variant available | Enables use in automotive powertrain and body electronics where component reliability must meet stress-test requirements for temperature cycling, humidity, and mechanical shock. |
| 400W peak pulse power rating | Handles high-energy surges from inductive load switching (e.g., solenoids, relays) without degradation or thermal runaway. |
| <1.0 ps response time (0V → VBR) | Engages before most microcontroller I/O structures can be damaged by ESD, preventing latch-up or gate oxide rupture. |
| UL 94V-0 molded compound | Provides flame-retardant housing essential for safety-critical applications including industrial PLCs and lighting ballasts. |
| RoHS and halogen-free compliance | Meets IEC 61249-2-21 for environmentally restricted substances, supporting green manufacturing and export compliance. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
|
Use Scenario: Protecting 5V supply lines in engine control units (ECUs) from load-dump and alternator ripple transients. IC Role / Device Role / Timing Role: Unidirectional clamping diode placed between VCC and GND, conducting only during positive overvoltage events. Use Value: Limits voltage excursions to ≤11.3V during 400W surges, preserving MCU and CAN transceiver integrity without requiring active supervision. |
Use Scenario: Shielding analog outputs of pressure or temperature sensors from ESD events during field wiring or connector mating. IC Role / Device Role / Timing Role: Standoff protector mounted directly at sensor connector entry point, shunting transients before reaching precision amplifier inputs. Use Value: Sub-nanosecond response prevents transient coupling into signal path, maintaining measurement accuracy and avoiding ADC saturation or reset. |
| LED Driver Output Protection | RS-485 Transceiver Line Protection |
|
Use Scenario: Safeguarding constant-current LED driver outputs against inductive kickback from disconnected loads or cable faults. IC Role / Device Role / Timing Role: Parallel-connected TVS absorbing reverse EMF spikes generated by driver MOSFET turn-off. Use Value: Clamps flyback voltage to 11.3V, preventing breakdown of driver FETs rated for ≤20V drain-source voltage. |
Use Scenario: Adding robustness to RS-485 bus lines exposed to lightning-induced surges or ground potential differences in factory automation networks. IC Role / Device Role / Timing Role: Bidirectional-capable variant not applicable; P4KE7.5A used in unidirectional configuration on receiver-side VCC rail or bias supply. Use Value: Maintains bus availability by limiting supply rail overshoot during common-mode surges, avoiding transceiver latch-up or shutdown. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Littelfuse P4KE7.5A | Identical electrical specs (VWM = 6.4V, VC = 11.3V, IPPM = 37A), same DO-41 package, UL E326243 recognized. | No functional difference; validated in identical automotive and industrial surge test protocols. | Select when dual-sourcing or second-source qualification is required without redesign. |
| ON Semiconductor 1.5KE7.5A | Higher peak power (1500W), larger DO-201AD package, VC = 12.0V at 123A - less precise clamping for low-voltage rails. | Better suited for higher-energy surges but over-specified for 5V rail protection; requires PCB layout change. | Choose only if system-level surge testing exceeds 400W or if footprint flexibility allows larger package. |
Compared with Littelfuse P4KE7.5A, the Taiwan Semiconductor P4KE7.5A offers identical clamping behavior and qualification status; versus ON Semi 1.5KE7.5A, it provides tighter voltage control and smaller footprint for space-constrained 5V protection, though with lower surge margin.
Availability
P4KE7.5A is available at Aetrix Electronics and suitable for automotive ECUs, industrial sensor interfaces, LED driver outputs, and RS-485 communication lines requiring stable component supply and long-term obsolescence management.
Supply support for P4KE7.5A 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 specializing in discrete power devices, TVS diodes, rectifiers, and thyristors, with global distribution and AEC-Q101 qualification capability.
The P4KE series targets cost-sensitive, high-reliability transient suppression in automotive, industrial, and consumer power systems - emphasizing robust clamping, fast response, and standardized DO-41 compatibility.
FAQ
What is the breakdown voltage range of the P4KE7.5A?
The P4KE7.5A has a guaranteed breakdown voltage range of 7.13 V to 7.88 V at 10 mA test current, measured per ANSI/IEEE C62.35. This tight tolerance ensures consistent clamping onset across production lots and supports reliable design margins for 5V and 6V systems. The P4KE7.5A's VBR specification is verified during 100% production testing.
Is the P4KE7.5A suitable for bidirectional transient protection?
No - the P4KE7.5A is a unidirectional TVS diode, intended only for clamping positive transients on grounded-return circuits. For bidirectional protection, select the P4KE7.5CA variant (with "CA" suffix), which provides symmetrical clamping in both polarities. Using the P4KE7.5A in reverse-biased configurations risks permanent damage due to lack of reverse avalanche capability.
Does the P4KE7.5A meet automotive qualification standards?
The base P4KE7.5A is not AEC-Q101 qualified; however, the P4KE7.5AH variant (with "H" suffix) is fully AEC-Q101 certified for stress tests including temperature cycling, high-temperature operating life, and unbiased highly accelerated stress testing. Always verify ordering code suffixes - P4KE7.5A vs. P4KE7.5AH - to ensure compliance for automotive applications.
What is the maximum clamping voltage of the P4KE7.5A under surge conditions?
The P4KE7.5A clamps to a maximum of 11.3 V when subjected to its rated 37.0 A peak pulse current (10/1000μs waveform). This value is measured at the device terminals under standardized test conditions and represents the upper limit of voltage seen by downstream circuitry during worst-case surge events. The P4KE7.5A's low clamping ratio (VC/VBR ≈ 1.5) reflects high surge-handling efficiency.
Can the P4KE7.5A be used in surface-mount designs?
No - the P4KE7.5A is packaged exclusively in the axial-leaded DO-204AL (DO-41) through-hole format and is not available in SMD variants such as SMA or SMC. For surface-mount TVS solutions with comparable ratings, consider Taiwan Semiconductor's SMAJ7.5A or SMF7.5A families. Retrofitting the P4KE7.5A onto SMT pads is not recommended due to mechanical instability and solder joint reliability concerns.
P4KE7.5A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Package/Case:
- DO-204AL, DO-41, Axial
- Series:
- P4KE
- 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):
- 37A
- Power - Peak Pulse:
- 400W
- 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-204AL (DO-41)
P4KE7.5A FAQ
1.How can I place an order for P4KE7.5A through Aetrix?
Please submit a Request for Quotation (RFQ) for P4KE7.5A 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 P4KE7.5A reliable?
The price and inventory of P4KE7.5A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4KE7.5A is usually 5 days.
3.What payment methods are accepted for P4KE7.5A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4KE7.5A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4KE7.5A?
P4KE7.5A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4KE7.5A 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 P4KE7.5A?
For technical support, including P4KE7.5A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4KE7.5A requirements.
6.How does Aetrix verify that P4KE7.5A is sourced from the original manufacturer or authorized distributors?
All P4KE7.5A 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 P4KE7.5A meets industry standards.
7.What is the process for return or replacement of P4KE7.5A?
All P4KE7.5A units undergo pre-shipment inspection (PSI). If there is an issue with P4KE7.5A, 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 P4KE7.5A part is unused and in its original packaging.
Return procedure for P4KE7.5A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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