My Inquiry
My Account
Taiwan Semiconductor Corporation P4KE7.5
- Part No.:
- P4KE7.5
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
P4KE7.5.pdf
- Description:
- 400W, 7.5V, UNIDIRECTIONAL, TVS
- Quantity:
- Payment:
- Shipping:
Inventory:8,427
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
P4KE7.5 from Taiwan Semiconductor is a unidirectional transient voltage suppressor (TVS) diode designed for primary overvoltage protection in DC power rails and signal lines. It features a 7.5V nominal breakdown voltage, 6.05V working stand-off voltage, 11.7V maximum clamping voltage at 35A peak pulse current, and 400W peak pulse power rating per 10/1000μs waveform - deployed in automotive body electronics, industrial sensor interfaces, and AC/DC adapter input stages.
For engineers reviewing the P4KE7.5 datasheet, P4KE7.5 pinout, P4KE7.5 application, or P4KE7.5 equivalent, key selection criteria include clamping voltage margin relative to protected IC VDD, leakage current below 500μA at 6.05V, DO-41 package compatibility with manual and automated assembly, and AEC-Q101 qualification availability for automotive-grade variants.
Technical Context
The P4KE7.5 operates as a silicon avalanche diode with fast response time (<1.0ps from 0V to VBR) and low dynamic impedance, enabling effective suppression of ESD (IEC 61000-4-2), EFT (IEC 61000-4-4), and lightning-induced surges. Its unidirectional polarity ensures forward conduction only during reverse overvoltage events, with no bidirectional symmetry.
Thermal performance is defined by a 175°C maximum junction temperature and 1W steady-state power dissipation at 75°C lead temperature, requiring minimal copper pad area (5×5 mm per terminal) for standard PCB layouts. The device exhibits a +0.061%/°C temperature coefficient of VBR, ensuring predictable voltage drift across operating range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 6.05 V - Maximum continuous reverse voltage before significant leakage; sets upper limit for safe operation in 5V–6V rail protection. |
| VBR @ 10 mA | 6.75–8.25 V - Breakdown voltage range at 10 mA test current; guarantees reliable avalanche initiation above system nominal voltage. |
| VC @ IPPM | 11.7 V - Clamping voltage at 35 A peak pulse current; defines worst-case voltage seen by downstream circuitry during surge. |
| PPK | 400 W - Peak pulse power handling per 10/1000 μs waveform; supports robust immunity against IEC 61000-4-5 Level 3 surges. |
| IR @ VWM | <500 μA - Reverse leakage at 6.05 V; ensures negligible standby power loss and avoids false triggering in low-power systems. |
| TJMAX | 175 °C - Maximum junction temperature; enables operation in under-hood automotive or high-ambient industrial environments. |
| Package | DO-204AL (DO-41) - Axial-leaded through-hole package with tin-plated leads compliant with J-STD-002 solderability. |
Pinout & Package
DO-204AL (DO-41) package with axial leads: Cathode indicated by band-marked end; anode is unmarked lead. Designed for through-hole mounting with 9.5 mm lead length and 0.300 g mass.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Surge current sink node | Connected to protected line; conducts avalanche current to ground during overvoltage event. |
| Anode (unmarked end) | Reference / return path | Typically tied to system ground or low-impedance return plane; completes surge current path. |
Key Features
| Feature | Design Value |
|---|---|
| Avalanche clamping action | Enables precise, repeatable voltage limiting without degradation after 1000+ surge events per JEDEC standards. |
| Low dynamic impedance | Ensures <11.7 V clamping even at 35 A surge, minimizing stress on 5V/3.3V logic and microcontroller I/O pins. |
| Fast response time | <1.0 ps rise-to-breakdown eliminates delay-related overshoot in ESD protection of high-speed interfaces. |
| UL 94V-0 molding compound | Prevents flame propagation in enclosure-mounted applications such as LED drivers and power supply modules. |
| AEC-Q101 qualification option | Available as P4KE7.5H variant for automotive subsystems requiring validated reliability under temperature cycling and humidity testing. |
Applications
| Automotive Body Control Module (BCM) | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Protecting LIN bus transceivers and microcontroller GPIOs from load dump and inductive switching spikes in door module PCBs. IC Role / Device Role / Timing Role: Primary overvoltage clamp on 12V supply rail and bidirectional data lines. Use Value: Limits transient voltage to ≤11.7 V, preventing latch-up or permanent damage to 5V-tolerant transceivers during 100 V/50 ms load dump events. |
Use Scenario: Safeguarding 4–20 mA current loop receivers and analog front-end op-amps from field wiring surges in factory automation sensors. IC Role / Device Role / Timing Role: Standoff protector on input terminals prior to precision shunt resistor and instrumentation amplifier. Use Value: Maintains <500 μA leakage at 6.05 V, avoiding measurement error in sub-μA current sensing while clamping 35 A surges to 11.7 V. |
| AC/DC Adapter Input Stage | LED Driver Power Input Protection |
Use Scenario: Secondary-side surge suppression on DC output rails of offline SMPS adapters powering consumer electronics. IC Role / Device Role / Timing Role: Final-stage clamp before LDO regulators and USB interface ICs. Use Value: Withstands 400 W pulses without derating, eliminating need for series resistors or additional filtering in compact 5V/9V adapter designs. |
Use Scenario: Overvoltage guard on constant-current LED driver inputs exposed to mains transients in streetlight and signage applications. IC Role / Device Role / Timing Role: First-line defense against differential-mode surges coupled from AC input rectifier stage. Use Value: 175°C TJMAX allows direct placement near heat-generating MOSFETs, reducing thermal interface complexity in thermally constrained LED modules. |
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 P6KE7.5 | Same DO-41 package, identical 7.5V nominal rating, but higher VC = 12.4 V at 33.5 A; 350 W peak power rating. | Suitable for less stringent clamping margin requirements; lower surge rating may limit use in IEC 61000-4-5 Level 4 environments. | Select when cost sensitivity outweighs 0.7 V clamping advantage and 50 W power headroom of P4KE7.5. |
| ON Semiconductor 1.5KE7.5 | Higher 1500 W peak power rating, larger DO-201AD package; VC = 12.4 V at 121 A; not pin-compatible. | Used where higher energy absorption is required (e.g., telecom power entry); incompatible with DO-41 footprint and manual assembly workflows. | Choose only when board redesign is acceptable and >1 kW surge handling is mandatory; not a drop-in replacement. |
Compared with P6KE7.5 and 1.5KE7.5, the P4KE7.5 delivers optimal balance of 400 W surge capacity, 11.7 V clamping, and DO-41 manufacturability - making it preferred for space-constrained, cost-sensitive 5–12 V rail protection where exact footprint retention and thermal budget control are critical.
Availability
P4KE7.5 is available at Aetrix Electronics and suitable for automotive body electronics, industrial sensor interfaces, AC/DC adapter input stages, and LED driver power input protection requiring stable component supply and long-term production continuity.
Supply support for P4KE7.5 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 semiconductor manufacturer specializing in discrete power devices, TVS diodes, rectifiers, and MOSFETs, with global distribution and AEC-Q101 qualified product lines.
The P4KE series targets cost-effective, high-reliability transient suppression in automotive, industrial, and consumer power systems - emphasizing robust surge handling, tight parameter tolerances, and RoHS/halogen-free compliance.
FAQ
What is the maximum clamping voltage of the P4KE7.5 under surge conditions?
The P4KE7.5 has a maximum clamping voltage (VC) of 11.7 V at 35 A peak pulse current (IPPM) under the standard 10/1000 μs waveform. This value is guaranteed across the full operating temperature range and represents the highest voltage imposed on protected circuitry during a 400 W transient event. The P4KE7.5 maintains this clamping performance without degradation after repeated surges, supporting long-term reliability in harsh environments.
Is the P4KE7.5 suitable for bidirectional signal line protection?
No, the P4KE7.5 is a unidirectional TVS diode and is not rated for bidirectional operation. Its cathode-band marking and asymmetric IV characteristics mean it only clamps reverse-polarity transients. For bidirectional protection, the P4KE7.5CA variant (with "CA" suffix) must be used - it provides symmetrical clamping in both directions with identical 6.75–8.25 V breakdown in either polarity.
Does the P4KE7.5 meet automotive qualification standards?
The base P4KE7.5 is not AEC-Q101 qualified; however, the P4KE7.5H variant - identified by the "H" suffix in the ordering code - is fully AEC-Q101 qualified and tested for temperature cycling, humidity, and mechanical shock per automotive requirements. Customers requiring automotive-grade assurance must specify P4KE7.5H, which shares identical electrical parameters and DO-41 packaging with the standard part.
What is the reverse leakage current of the P4KE7.5 at its working stand-off voltage?
The P4KE7.5 exhibits a maximum reverse leakage current (ID) of 500 μA at its working stand-off voltage (VWM) of 6.05 V, measured at 25°C. This low leakage ensures minimal impact on power efficiency and signal integrity in battery-powered or precision analog circuits. Leakage remains well below 1 mA across the full -55°C to +125°C operating range, supporting stable performance in wide-temperature applications.
Can the P4KE7.5 be used in surface-mount designs?
No, the P4KE7.5 is exclusively offered in the axial-leaded DO-204AL (DO-41) through-hole package and is not available in surface-mount variants such as SMA or SMC. Its mechanical construction, lead pitch, and thermal path are optimized for through-hole mounting with 9.5 mm lead length. For SMT implementations, designers should consider functionally equivalent alternatives like the SMAJ7.5 or SMCJ7.5 series, which differ in package, thermal profile, and mounting method.
P4KE7.5 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):
- 6.05V
- Voltage - Breakdown (Min):
- 6.75V
- Voltage - Clamping (Max) @ Ipp:
- 11.7V
- Current - Peak Pulse (10/1000µs):
- 35A
- 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)
P4KE7.5 FAQ
1.How can I place an order for P4KE7.5 through Aetrix?
Please submit a Request for Quotation (RFQ) for P4KE7.5 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 P4KE7.5 reliable?
The price and inventory of P4KE7.5 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4KE7.5 is usually 5 days.
3.What payment methods are accepted for P4KE7.5?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4KE7.5 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4KE7.5?
P4KE7.5 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4KE7.5 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 P4KE7.5?
For technical support, including P4KE7.5 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4KE7.5 requirements.
6.How does Aetrix verify that P4KE7.5 is sourced from the original manufacturer or authorized distributors?
All P4KE7.5 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 P4KE7.5 meets industry standards.
7.What is the process for return or replacement of P4KE7.5?
All P4KE7.5 units undergo pre-shipment inspection (PSI). If there is an issue with P4KE7.5, 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 P4KE7.5 part is unused and in its original packaging.
Return procedure for P4KE7.5:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4KE7.5 Tags
-
ESD9B5.0ST5G
onsemi
-
DESD3V3E1BL-7B
Diodes Incorporated
-
ESD5Z3.3T1G
onsemi
-
D5V0H1B2LP-7B
Diodes Incorporated
-
D5V0P1B2LP-7B
Diodes Incorporated
-
DESD5V0U1BA-7
Diodes Incorporated
-
ESD5Z5.0T1G
onsemi
-
DESD5V0U1BB-7
Diodes Incorporated
-
D12V0L1B2LP-7B
Diodes Incorporated
-
PESD2V0Y1BSFYL
Nexperia USA Inc.
-
DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
-
D5V0L1B2WS-7
Diodes Incorporated
Tech Hub
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
