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Taiwan Semiconductor Corporation P4KE7.5CA
- Part No.:
- P4KE7.5CA
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
P4KE7.5CA.pdf
- Description:
- TVS DIODE 6.4VWM 11.3VC DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:3,218
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Product details
Overview
P4KE7.5CA from Taiwan Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in DO-204AL (DO-41) package, designed for high-energy surge clamping in automotive and industrial power rails. It features a 7.5V nominal breakdown voltage (VBR min/max = 6.75–8.25V at 10mA), 6.05V working stand-off voltage (VWM), 11.7V maximum clamping voltage (VC) at 35A peak pulse current, and 400W peak pulse power rating per 10/1000μs waveform.
For engineers reviewing the P4KE7.5CA datasheet, P4KE7.5CA pinout, P4KE7.5CA application, or P4KE7.5CA equivalent, key selection criteria include bidirectional clamping capability, low leakage (<500μA @ VWM), fast response (<5ns), AEC-Q101 qualification option, and compatibility with 12V automotive supply protection, ESD-hardened I/O interfaces, and inductive load flyback suppression.
Technical Context
The P4KE7.5CA operates as a voltage-clamped avalanche diode with symmetrical bidirectional conduction-enabling protection of AC-coupled or floating signal lines without polarity concerns. Its junction structure delivers sub-5ns response to transients and maintains stable clamping across -55°C to +175°C operating temperature range.
Designed for unclamped surge waveforms up to 400W (10/1000μs), it sustains 35A peak pulse current while limiting voltage to ≤11.7V, ensuring downstream ICs (e.g., CAN transceivers, microcontroller GPIOs, sensor front-ends) remain below absolute maximum ratings during ISO 7637-2 Pulse 1/2a/5a events.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 6.05 V - Maximum continuous reverse voltage before significant leakage; ensures no false triggering on 5V/12V rails. |
| VBR (min/max) | 6.75 / 8.25 V @ 10 mA - Tight breakdown tolerance enables precise overvoltage threshold setting. |
| VC @ IPPM | 11.7 V @ 35 A - Clamping voltage under full 400W surge; keeps protected node safely below 12V logic limits. |
| PPK | 400 W - Peak pulse power handling per 10/1000μs standard waveform (IEC 61000-4-5 Level 4). |
| ID @ VWM | <500 μA - Low leakage preserves battery life in always-on circuits and avoids loading sensitive analog inputs. |
| TJ max | +175 °C - Enables placement near hot components (e.g., power MOSFETs, DC-DC inductors) without derating. |
| Package | DO-204AL (DO-41) - Industry-standard axial leaded package with UL 94V-0 molding and tin-plated leads. |
Pinout & Package
DO-204AL (DO-41) axial-leaded package with cathode band marking for unidirectional variants; P4KE7.5CA is bidirectional and has no polarity marking-both leads are electrically identical and interchangeable.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bidirectional avalanche junction terminal | Either lead may connect to line or ground; enables single-device protection of differential or floating nodes. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables protection of AC signals, RS-485 buses, and transformer-coupled interfaces without external polarity management. |
| 400W peak pulse rating | Withstands ISO 7637-2 Pulse 5a (500V/2Ω) and IEC 61000-4-5 Combination Wave (4kV) surges without degradation. |
| <5 ns response time | Clamps transients before sensitive CMOS inputs enter destructive overvoltage states (e.g., MCU reset pins, ADC references). |
| AEC-Q101 qualified option | Available as P4KE7.5CAH - certified for automotive under-hood and infotainment applications per stress test requirements. |
| UL 94V-0 flammability | Molding compound self-extinguishes under flame exposure, meeting IPC-CC-830B and automotive safety standards. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: 12V battery line in engine control unit exposed to load dump (ISO 7637-2 Pulse 5a) and alternator ripple. IC Role / Device Role / Timing Role: Primary clamping device placed at power entry point before DC-DC converter input. Use Value: Limits transient voltage to ≤11.7V, preventing damage to 16V-rated input capacitors and enabling use of cost-optimized 16V input regulators. |
Use Scenario: 4–20mA current loop transmitter connected to field wiring subject to EFT bursts (IEC 61000-4-4). IC Role / Device Role / Timing Role: Bidirectional shunt clamp across loop terminals to divert EFT energy away from op-amp current source. Use Value: Sub-5ns response prevents latch-up in precision current-sense amplifiers; low VWM avoids interfering with 24V loop headroom. |
| RS-485 Transceiver Port Protection | LED Driver Flyback Suppression |
Use Scenario: Industrial PLC communication port connected to long cables susceptible to lightning-induced surges. IC Role / Device Role / Timing Role: Common-mode TVS across A/B lines referenced to ground, placed upstream of isolated RS-485 transceiver. Use Value: Symmetrical clamping maintains differential integrity during ±15kV ESD (IEC 61000-4-2) and limits common-mode excursion to safe levels for isolation barrier. |
Use Scenario: Automotive LED headlamp driver using N-channel MOSFET switch; inductive kick during turn-off exceeds MOSFET VDS rating. IC Role / Device Role / Timing Role: Bidirectional TVS placed across LED string to absorb flyback energy when MOSFET turns off. Use Value: 400W rating handles repetitive 100mJ pulses; clamping at 11.7V protects 20V-rated MOSFETs without requiring snubber RC networks. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ7.5CA (Bourns) | Same 7.5V nominal, DO-214AA package (SMB), 600W rating, 12.6V VC @ 42.1A. | Higher power handling but larger footprint; requires PCB re-layout for surface-mount compatibility. | Select SMBJ7.5CA when higher surge margin is needed and board space allows SMT placement. |
| 1.5KE7.5CA (ON Semiconductor) | Same DO-204AL package, 7.5V nominal, but 1500W rating, 12.9V VC @ 116A; higher leakage (1000μA @ VWM). | Over-specified for 400W needs; higher clamping voltage and leakage may affect low-power sensor nodes. | Choose 1.5KE7.5CA only if legacy design mandates 1.5kW rating or existing 1.5KE footprint reuse is required. |
Compared with SMBJ7.5CA and 1.5KE7.5CA, the P4KE7.5CA offers optimal balance of axial-lead compatibility, 400W surge capacity, low clamping voltage (11.7V), and minimal leakage (≤500μA), making it ideal for cost-sensitive, space-constrained 12V automotive and industrial control designs where DO-41 mounting is preferred.
Availability
P4KE7.5CA is available at Aetrix Electronics and suitable for automotive power rail protection, industrial sensor interface hardening, RS-485 port surge immunity, LED driver flyback suppression, and ESD-critical I/O line protection requiring stable component supply and long-term lifecycle support.
Supply support for P4KE7.5CA 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 qualification capabilities.
The P4KE series was developed specifically for robust, cost-effective transient suppression in automotive, industrial, and consumer power systems-emphasizing reliability under thermal stress, surge repetition, and harsh environmental conditions.
FAQ
What does the 'CA' suffix indicate in P4KE7.5CA?
The 'CA' suffix in P4KE7.5CA denotes bidirectional configuration-meaning the device provides symmetrical clamping in both polarities, unlike unidirectional 'C' variants. This makes P4KE7.5CA suitable for protecting AC-coupled lines, differential buses like RS-485, or floating sensor inputs where polarity reversal may occur. The device has no cathode marking and functions identically regardless of lead orientation.
Is P4KE7.5CA AEC-Q101 qualified?
The base P4KE7.5CA is not automatically AEC-Q101 qualified; however, Taiwan Semiconductor offers the AEC-Q101-compliant variant as P4KE7.5CAH (with 'H' suffix). This version undergoes extended stress testing per AEC-Q101 Rev D, including HTGB, HTRB, and temperature cycling, and is approved for automotive under-hood and body electronics applications. Always verify ordering code suffix when specifying for automotive use.
How does P4KE7.5CA compare to P4KE7.5A in clamping performance?
P4KE7.5CA and P4KE7.5A differ fundamentally: P4KE7.5CA is bidirectional (clamps both polarities), while P4KE7.5A is unidirectional with anode/cathode distinction. Their clamping voltages differ slightly-P4KE7.5CA has VC = 11.7V @ 35A, whereas P4KE7.5A has VC = 11.3V @ 37A. The lower VC of P4KE7.5A is offset by its polarity sensitivity; P4KE7.5CA's symmetry simplifies layout but trades ~0.4V higher clamping under identical surge conditions.
What is the maximum allowable mounting temperature for P4KE7.5CA during reflow or hand soldering?
P4KE7.5CA uses pure tin-plated leads compliant with J-STD-002 and is rated for wave soldering at 260°C for 10 seconds max. For hand soldering, peak tip temperature should not exceed 350°C for ≤3 seconds per lead. Exceeding these limits risks delamination of the DO-204AL epoxy body or interfacial failure at the lead-frame bond. Taiwan Semiconductor confirms no derating is needed for soldering within these parameters.
Can P4KE7.5CA be used in parallel to increase surge current handling?
No-P4KE7.5CA must not be paralleled without individual current-sharing resistors. Due to manufacturing tolerances in VBR (±7.5% for P4KE7.5CA), one device will conduct first and absorb most of the surge, risking thermal runaway and failure. For higher current capability, select a single higher-rated part (e.g., P4KE10CA or SMBJ7.5CA) rather than paralleling P4KE7.5CA units.
P4KE7.5CA 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:
- -
- Bidirectional Channels:
- 1
- 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)
P4KE7.5CA FAQ
1.How can I place an order for P4KE7.5CA through Aetrix?
Please submit a Request for Quotation (RFQ) for P4KE7.5CA 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 P4KE7.5CA reliable?
The price and inventory of P4KE7.5CA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4KE7.5CA is usually 5 days.
3.What payment methods are accepted for P4KE7.5CA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4KE7.5CA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4KE7.5CA?
P4KE7.5CA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4KE7.5CA 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 P4KE7.5CA?
For technical support, including P4KE7.5CA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4KE7.5CA requirements.
6.How does Aetrix verify that P4KE7.5CA is sourced from the original manufacturer or authorized distributors?
All P4KE7.5CA 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 P4KE7.5CA meets industry standards.
7.What is the process for return or replacement of P4KE7.5CA?
All P4KE7.5CA units undergo pre-shipment inspection (PSI). If there is an issue with P4KE7.5CA, 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 P4KE7.5CA part is unused and in its original packaging.
Return procedure for P4KE7.5CA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4KE7.5CA Tags
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