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Taiwan Semiconductor Corporation P4SMA75A
- Part No.:
- P4SMA75A
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA75A.pdf
- Description:
- TVS DIODE 64.1VWM 103VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:3,178
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Product details
Overview
P4SMA75A from Taiwan Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode designed for primary-side overvoltage protection in DC power rails. It features a 71.3–78.8 V breakdown voltage (VBR), 64.1 V working stand-off voltage (VWM), 103 V maximum clamping voltage (VC) at 4.0 A peak impulse current, and 400 W peak pulse power rating under 10/1000 µs waveform - enabling robust surge immunity in industrial power adapters and on-board DC/DC converters.
For engineers reviewing the P4SMA75A datasheet, P4SMA75A pinout, P4SMA75A application, or P4SMA75A equivalent, key selection criteria include its DO-214AC (SMA) package compatibility, unidirectional polarity marking, sub-1 ps response time, <1 µA reverse leakage at VWM, and compliance with ISO 7637-2 Pulse 1/2a/2b/3a/3b for automotive electronics protection.
Technical Context
The P4SMA75A operates as a single-die, unidirectional avalanche diode optimized for clamping fast transients on low-to-medium voltage DC lines. Its glass-passivated junction ensures stable VBR tolerance (±5% typical for 'A' suffix), low temperature coefficient (0.105 %/°C), and reliable operation across –55°C to +150°C junction temperature range.
It delivers 400 W peak pulse power handling per 10/1000 µs waveform with 103 V clamping at 4.0 A, achieving <1.0 ps response time and <1 µA IR at 64.1 V - meeting stringent requirements for ESD and load-dump suppression in switching mode power supplies and lighting drivers without forward conduction interference.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR @ IT=1 mA | 71.3–78.8 V - Ensures precise, repeatable avalanche turn-on above normal operating rail (64.1 V) |
| VWM | 64.1 V - Maximum continuous DC or RMS voltage the device blocks without leakage exceeding 1 µA |
| VC @ IPPM=4.0 A | 103 V - Clamped voltage during 10/1000 µs surge; limits downstream IC stress to safe levels |
| PPPM | 400 W - Sustains high-energy transients (e.g., ISO 7637-2 Pulse 1, 2b, 3b) without failure |
| IR @ VWM | <1 µA - Negligible standby power loss and minimal impact on high-impedance sensing circuits |
| Response Time | <1.0 ps - Faster than most microcontroller I/O or power MOSFET gate drive rise times |
| Package | DO-214AC (SMA) - Industry-standard surface-mount footprint compatible with automated assembly and IPC-7351B land patterns |
Pinout & Package
DO-214AC (SMA) package: molded plastic case with matte tin-plated leads, cathode band marking polarity, UL 94V-0 rated compound, and JESD201 Class 2 whisker resistance. Weight: 0.060 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference terminal | Connected to system ground or return path; defines unidirectional clamping direction from cathode to anode |
| Cathode | High-side surge input terminal | Connected to protected line (e.g., +12 V rail); conducts avalanche current to ground during overvoltage events |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Enables stable VBR tolerance (±5%), low leakage, and long-term reliability under thermal cycling |
| ISO 7637-2 compliance | Validated for automotive-grade transients including Pulse 1 (inductive load dump), 2a/2b (battery disconnect), and 3a/3b (capacitive coupling) |
| Moisture sensitivity level 1 | Zero bake requirement before reflow; supports standard SMT assembly without preconditioning |
| Halogen-free & RoHS compliant | Meets IEC 61249-2-21 and EU RoHS Directive 2011/65/EU for environmentally constrained applications |
| Fast response & low clamping | <1 ps turn-on and 103 V clamping at 4.0 A ensure sensitive logic and analog circuitry remain within safe operating area |
Applications
| Switching Mode Power Supply (SMPS) | Industrial Lighting Driver |
|---|---|
Use Scenario: Input rectified DC bus in offline AC/DC converters subject to lightning-induced surges and line switching transients. IC Role / Device Role: Primary-side overvoltage clamp protecting bulk capacitor, controller IC, and MOSFET gate driver. Use Value: Limits transient voltage to ≤103 V during 400 W surges, preventing controller latch-up and MOSFET avalanche failure. |
Use Scenario: Constant-current LED driver output stage exposed to cable discharge events and hot-plug transients. IC Role / Device Role: Output rail TVS suppressing >1 kV ESD and 100 A load-dump spikes from long wiring harnesses. Use Value: Maintains LED string integrity by clamping output overshoot below 103 V while drawing <1 µA at 64.1 V nominal. |
| On-Board DC/DC Converter | Automotive Body Control Module (BCM) |
Use Scenario: 12 V-to-3.3 V buck converter input in industrial PLC I/O modules subjected to relay coil flyback and motor commutation noise. IC Role / Device Role: Input rail protector upstream of DC/DC controller and input filter capacitors. Use Value: Absorbs 400 W pulses without degradation, preserving converter regulation and avoiding brownout resets. |
Use Scenario: 12 V supply rail in BCM units exposed to ISO 7637-2 Pulse 2b (battery disconnection) and Pulse 5a (load dump). IC Role / Device Role: Unidirectional TVS on main power input, referenced to chassis ground with cathode tied to rail. Use Value: Clamps 12 V rail to ≤103 V during 100 V/100 ms load-dump events, protecting MCU and CAN transceivers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ75A (Bourns) | Same VWM (64.0 V), slightly higher VC (113 V @ 3.5 A), SMB package (larger footprint) | Requires PCB layout change due to SMB-DO-214AA vs. SMA-DO-214AC footprint mismatch | Select when higher surge margin is needed and board space allows larger package |
| 1.5SMC75A (ON Semiconductor) | Identical electrical specs (VWM=64.1 V, VC=103 V, PPPM=400 W), same DO-214AC package, but lead-free matte tin finish per J-STD-002 | No functional difference; validated for identical ISO 7637-2 pulses and thermal profiles | Drop-in alternative with full pin-and-package compatibility and identical clamping performance |
Compared with P4SMA75A, SMBJ75A offers comparable protection but requires PCB redesign, while 1.5SMC75A provides identical electrical behavior and mechanical fit - making it the preferred drop-in replacement for continuity-critical designs.
Availability
P4SMA75A is available at Aetrix Electronics and suitable for switching mode power supplies, industrial lighting drivers, and on-board DC/DC converters requiring stable component supply, consistent surge performance, and long-lifecycle availability.
Supply support for P4SMA75A 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 industrial, automotive, and consumer applications.
The P4SMA75A belongs to TSC's P4SMA(A) series of 400 W surface-mount TVS diodes - engineered specifically for high-reliability transient suppression in space-constrained, high-volume power conversion systems.
FAQ
What is the polarity configuration of the P4SMA75A?
The P4SMA75A is a unidirectional TVS diode with cathode-band marking indicating the high-side terminal. When installed with the cathode connected to the protected line and anode to ground, it clamps positive transients only - ideal for DC rails where reverse voltage is not expected. This differs from bidirectional variants (e.g., P4SMA75CA), which suppress both polarities.
Does the P4SMA75A meet automotive transient standards?
Yes, the P4SMA75A meets ISO 7637-2 requirements for Pulse 1 (inductive switch-off), Pulse 2a/2b (battery interruption), and Pulse 3a/3b (capacitive coupling), verified per manufacturer test data. Its 103 V clamping voltage at 4.0 A and 400 W peak power rating ensure robust protection for 12 V automotive ECUs and body control modules.
What is the maximum junction temperature rating for the P4SMA75A?
The P4SMA75A has a maximum junction temperature (TJMAX) of +150°C and operates across –55°C to +150°C. This wide range supports deployment in under-hood automotive environments and industrial enclosures with elevated ambient temperatures, provided PCB copper area and airflow comply with TSC's derating curves (Fig.2).
How does the 'A' suffix in P4SMA75A affect its specifications?
The 'A' suffix denotes tighter VBR tolerance: P4SMA75A has 71.3–78.8 V (±5% around 75 V), versus P4SMA75's wider 67.5–82.5 V (±10%). This improves design margin predictability in precision clamping applications and reduces variation in worst-case clamping voltage across production lots.
Is the P4SMA75A compatible with lead-free reflow soldering processes?
Yes, the P4SMA75A uses matte tin-plated leads compliant with J-STD-002 and rated for lead-free reflow profiles up to 260°C peak. Its moisture sensitivity level (MSL) is Level 1 per J-STD-020 - meaning it can be stored indefinitely at ≤30°C/60% RH without baking prior to assembly.
P4SMA75A 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:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 64.1V
- Voltage - Breakdown (Min):
- 71.3V
- Voltage - Clamping (Max) @ Ipp:
- 103V
- Current - Peak Pulse (10/1000µs):
- 4A
- 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)
P4SMA75A FAQ
1.How can I place an order for P4SMA75A through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA75A 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 P4SMA75A reliable?
The price and inventory of P4SMA75A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA75A is usually 5 days.
3.What payment methods are accepted for P4SMA75A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA75A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA75A?
P4SMA75A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA75A 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 P4SMA75A?
For technical support, including P4SMA75A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA75A requirements.
6.How does Aetrix verify that P4SMA75A is sourced from the original manufacturer or authorized distributors?
All P4SMA75A 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 P4SMA75A meets industry standards.
7.What is the process for return or replacement of P4SMA75A?
All P4SMA75A units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA75A, 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 P4SMA75A part is unused and in its original packaging.
Return procedure for P4SMA75A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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