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Taiwan Semiconductor Corporation P4SMA7.5CA
- Part No.:
- P4SMA7.5CA
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA7.5CA.pdf
- Description:
- TVS DIODE 6.4VWM 11.3VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:6,992
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Product details
Overview
P4SMA7.5CA from Taiwan Semiconductor is a bidirectional surface-mount transient voltage suppressor (TVS) diode in DO-214AC (SMA) package, designed for clamping ESD and surge transients in DC power rails and signal lines. It features a 7.13–7.88 V breakdown voltage (VBR), 6.40 V working stand-off voltage (VWM), 11.3 V maximum clamping voltage (VC) at 37 A peak pulse current, and 400 W peak pulse power rating per 10/1000 µs waveform - deployed in SMPS input protection and automotive body electronics.
For engineers reviewing the P4SMA7.5CA datasheet, P4SMA7.5CA pinout, P4SMA7.5CA application, or P4SMA7.5CA equivalent, key selection criteria include bidirectional clamping capability, sub-1 ps response time, <1 µA reverse leakage at VWM, ISO 7637-2 Pulse 1/2a/2b/3a/3b compliance, and DO-214AC thermal and mechanical reliability in high-volume automated assembly.
Technical Context
The P4SMA7.5CA implements a glass-passivated silicon junction optimized for fast avalanche response and low dynamic impedance during transient events. Its bidirectional configuration enables symmetric clamping across both polarities without external polarity management, supporting robust protection in AC-coupled or floating-bus applications such as USB data lines and CAN bus interfaces.
It operates over –55°C to +150°C junction temperature range with 0.061 %/°C temperature coefficient of VBR, ensuring stable clamping threshold across automotive under-hood environments. The device meets JESD201 Class 2 whisker resistance and UL 94V-0 flammability requirements, confirming suitability for industrial and automotive-grade PCB assemblies.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR min/max | 7.13 V / 7.88 V at 10 mA test current - defines guaranteed avalanche onset window for reliable turn-on margin above system operating voltage |
| VWM | 6.40 V - maximum continuous reverse voltage before significant leakage; sets upper limit for 5 V rail protection with safety margin |
| VC @ IPPM | 11.3 V at 37 A (10/1000 µs) - peak clamped voltage seen by protected IC; determines survivability of downstream 12 V tolerant components |
| PPPM | 400 W - peak pulse power handling capacity; supports single-event surges up to ISO 7637-2 Pulse 2b (50 V, 2 Ω, 50 ms) |
| IR @ VWM | < 500 µA - ultra-low reverse leakage ensures minimal standby power loss and no signal integrity degradation in high-impedance sensing paths |
| Response time | < 1.0 ps - enables effective suppression of ESD events (IEC 61000-4-2) before sensitive circuitry experiences overstress |
| TJ max | +150 °C - allows operation in engine control units, LED drivers, and other thermally demanding locations without derating |
Pinout & Package
Package: DO-214AC (SMA), surface-mount, bi-directional, cathode band not applicable (symmetrical terminals).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (bidirectional) | Transient conduction path | Both terminals function identically; connects across protected line and ground (or between differential lines) to clamp voltage excursions in either polarity |
| Case (exposed metal pad) | Thermal mass / mechanical anchor | Not electrically connected; provides thermal dissipation path and solder joint reliability per JEDEC MS-013 standards |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Enables stable VBR tolerance and long-term reliability under humidity and thermal cycling stress (J-STD-020 MSL Level 1) |
| Bidirectional clamping | Eliminates need for polarity-aware layout; supports protection of AC signals, differential buses (e.g., RS-485), and floating supplies |
| ISO 7637-2 compliance | Validated for automotive load dump and inductive switching transients (Pulse 1, 2a, 2b, 3a, 3b), enabling drop-in use in vehicle ECUs |
| Matte tin-plated leads | Ensures solderability per J-STD-002 and eliminates lead-free assembly defects including dewetting and non-wet open |
| Halogen-free & RoHS | Meets IEC 61249-2-21 and EU RoHS Directive 2011/65/EU - required for export to EU, China, and South Korea markets |
Applications
| Automotive Body Control Module (BCM) | Industrial SMPS Input Stage |
|---|---|
Use Scenario: Protecting LIN bus transceivers and door actuator drivers from battery load dump and alternator ripple. IC Role / Device Role: Bidirectional voltage clamp placed between LIN line and chassis ground. Use Value: Limits transient voltage to ≤11.3 V, preventing damage to 12 V-rated transceivers while maintaining signal integrity during 100 V/50 ms pulses. |
Use Scenario: Safeguarding primary-side controller ICs and MOSFET gates against input surge in 24 V industrial switch-mode power supplies. IC Role / Device Role: Parallel-connected TVS across bulk capacitor input to absorb line transients before they reach PWM controller. Use Value: Clamps 400 W surges within 1 ps, reducing risk of controller latch-up or gate oxide failure without adding series impedance. |
| LED Driver Output Protection | USB 2.0 Data Line ESD Clamp |
Use Scenario: Suppressing inductive kickback from constant-current LED strings during hot-plug or short-circuit events. IC Role / Device Role: Placed across LED output terminals to clamp reverse voltage spikes generated by inductor flyback. Use Value: Withstands 37 A peak current and limits clamping voltage to 11.3 V, protecting 12 V-rated LED driver ICs and current-sense amplifiers. |
Use Scenario: Providing IEC 61000-4-2 Level 4 (±15 kV contact) ESD protection on D+ and D− lines of embedded USB host ports. IC Role / Device Role: Low-capacitance bidirectional TVS placed directly at USB connector pins. Use Value: Sub-1 ps response ensures clamping occurs before ESD pulse couples into PHY; <500 µA leakage avoids signal distortion at 480 Mbps. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ7.0CA (Bourns) | DO-214AA (SMB) package; 7.0 V nominal VBR; 600 W PPPM; higher VC = 12.0 V @ 43.3 A | Larger footprint; better suited for higher-energy surges but requires PCB re-layout | Select when higher surge margin is needed and board space permits SMB package |
| 1.5KE7.5CA (ON Semiconductor) | DO-201AD (Axial) through-hole package; same VBR/VC specs; 1500 W PPPM; slower thermal response | Not SMT-compatible; incompatible with automated placement; used only in legacy or high-reliability through-hole designs | Choose only for through-hole prototyping or repair of existing axial-based systems |
Compared with SMBJ7.0CA and 1.5KE7.5CA, the P4SMA7.5CA offers optimal balance of compact DO-214AC footprint, precise 7.13–7.88 V VBR window, and 400 W surge capability - making it ideal for space-constrained, high-volume automotive and industrial SMT applications where layout compatibility and repeatability are critical.
Availability
P4SMA7.5CA is available at Aetrix Electronics and suitable for automotive body electronics, industrial switch-mode power supplies, LED driver output stages, and USB 2.0 interface protection requiring stable component supply and full traceability.
Supply support for P4SMA7.5CA 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 for automotive, industrial, and consumer applications.
The P4SMA7.5CA belongs to TSC's P4SMAx family of surface-mount TVS diodes engineered specifically for high-reliability transient suppression in harsh environments - emphasizing low leakage, tight VBR tolerance, and automotive-grade qualification.
FAQ
What is the breakdown voltage range of the P4SMA7.5CA?
The P4SMA7.5CA has a guaranteed breakdown voltage (VBR) range of 7.13 V to 7.88 V at 10 mA test current, measured per ANSI/IEEE C62.35. This tight 10% tolerance ensures predictable clamping behavior across production lots and temperature extremes, critical for protecting 5 V and 12 V systems where overvoltage margin must be precisely controlled.
Is the P4SMA7.5CA unidirectional or bidirectional?
The P4SMA7.5CA is a bidirectional TVS diode, indicated by the "CA" suffix per Taiwan Semiconductor's ordering convention. It provides symmetrical clamping in both polarities, eliminating the need for polarity-aware routing and enabling use in AC-coupled circuits, differential buses, and floating-ground systems without external diode pairing.
Does the P4SMA7.5CA meet automotive surge immunity standards?
Yes, the P4SMA7.5CA meets ISO 7637-2 Pulse 1, 2a, 2b, 3a, and 3b requirements for automotive electrical disturbances. Its 400 W peak pulse power rating and 11.3 V clamping voltage at 37 A enable robust protection against load dump, inductive switching, and battery reversal transients commonly encountered in vehicle ECUs and body control modules.
What is the maximum clamping voltage of the P4SMA7.5CA under surge conditions?
The P4SMA7.5CA exhibits a maximum clamping voltage (VC) of 11.3 V when subjected to a 10/1000 µs surge waveform with peak current of 37 A. This value is measured per standard test conditions and defines the highest voltage imposed on protected circuitry during worst-case transient events - essential for verifying compatibility with downstream 12 V tolerant ICs.
What package type does the P4SMA7.5CA use, and is it compatible with automated assembly?
The P4SMA7.5CA uses the DO-214AC (SMA) surface-mount package, which is fully compatible with automated pick-and-place equipment and reflow soldering processes. Its matte tin-plated leads comply with J-STD-002 for solderability, and its MSL Level 1 rating per J-STD-020 allows unlimited floor life without dry pack storage - streamlining high-volume manufacturing.
P4SMA7.5CA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Package/Case:
- DO-214AC, SMA
- Series:
- P4SMA
- 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 ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
P4SMA7.5CA FAQ
1.How can I place an order for P4SMA7.5CA through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA7.5CA 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 P4SMA7.5CA reliable?
The price and inventory of P4SMA7.5CA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA7.5CA is usually 5 days.
3.What payment methods are accepted for P4SMA7.5CA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA7.5CA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA7.5CA?
P4SMA7.5CA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA7.5CA 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 P4SMA7.5CA?
For technical support, including P4SMA7.5CA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA7.5CA requirements.
6.How does Aetrix verify that P4SMA7.5CA is sourced from the original manufacturer or authorized distributors?
All P4SMA7.5CA 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 P4SMA7.5CA meets industry standards.
7.What is the process for return or replacement of P4SMA7.5CA?
All P4SMA7.5CA units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA7.5CA, 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 P4SMA7.5CA part is unused and in its original packaging.
Return procedure for P4SMA7.5CA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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