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Taiwan Semiconductor Corporation P4SMA150A
- Part No.:
- P4SMA150A
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA150A.pdf
- Description:
- TVS DIODE 128VWM 207VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:8,982
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Product details
Overview
P4SMA150A from Taiwan Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode designed for overvoltage protection in DC power lines and signal paths. It features a 128 V working stand-off voltage (VWM), 143–158 V breakdown voltage (VBR), 207 V maximum clamping voltage (VC) at 2.0 A peak pulse current, and 400 W peak pulse power rating under 10/1000 µs waveform - deployed in SMPS input stages and on-board DC/DC converters.
For engineers reviewing the P4SMA150A datasheet, P4SMA150A pinout, P4SMA150A application, or P4SMA150A equivalent, key selection criteria include clamping performance at rated surge current, low leakage (<1 µA @ VWM), DO-214AC (SMA) package compatibility with automated assembly, and compliance with ISO 7637-2 Pulse 1/2a/2b/3a/3b for automotive electronics.
Technical Context
The P4SMA150A operates as a unidirectional avalanche diode, leveraging glass-passivated junction technology to achieve fast response (<1.0 ps) and stable breakdown characteristics. Its thermal design supports continuous operation from –55 °C to +150 °C junction temperature, with derating applied above 25 °C ambient per Fig.2.
It delivers precise overvoltage protection by clamping transients to ≤207 V when subjected to a 10/1000 µs surge of 2.0 A, while maintaining <1 µA reverse leakage at 128 V - enabling reliable hold-off in high-impedance monitoring circuits and robust suppression in 24–48 V industrial power rails.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 128 V - Maximum continuous reverse voltage before significant leakage; defines safe operating DC bias limit |
| VBR min/max | 143 V / 158 V @ 1.0 mA - Tight 10.5% tolerance ensures predictable turn-on across production lots |
| VC @ IPPM | 207 V @ 2.0 A (10/1000 µs) - Clamping level guarantees downstream ICs see <207 V during surge events |
| PPPM | 400 W - Peak pulse power handling capacity for short-duration transients per IEC 61000-4-5 |
| IR @ VWM | <1 µA - Enables use in high-impedance sensing nodes without loading error |
| TJ max | +150 °C - Supports operation in enclosed power supplies and under-hood automotive environments |
Pinout & Package
Package: DO-214AC (SMA), surface-mount, single-diode configuration with cathode band marking. Matte tin-plated leads meet J-STD-002 solderability requirements.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential side (e.g., GND or return path) in unidirectional TVS configuration |
| Cathode | Reverse-biased clamping terminal | Connected to protected line (e.g., +12 V rail); conducts avalanche current during overvoltage |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures long-term stability of VBR and low parameter drift over temperature and life cycle |
| Fast response time | <1.0 ps - Limits voltage overshoot during ESD or lightning-induced transients |
| ISO 7637-2 compliance | Validated for Pulse 1 (inductive load dump), Pulse 2a/2b (switching transients), and Pulse 3a/3b (line impedance coupling) |
| Moisture sensitivity level | MSL Level 1 (per J-STD-020) - No floor life limitation; suitable for standard SMT reflow without baking |
Applications
| Switching Mode Power Supply (SMPS) | Automotive On-Board DC/DC Converter |
|---|---|
Use Scenario: Protection of primary-side controller ICs and secondary-side rectifiers against line surges and inductive kickback. IC Role / Device Role: Unidirectional TVS placed across input bulk capacitor or across MOSFET drain-source. Use Value: Clamps 400 W transients to ≤207 V, preventing latch-up or gate oxide damage in 600 V MOSFETs and PWM controllers. | Use Scenario: Safeguarding 12 V → 3.3 V/5 V buck converter inputs in vehicle infotainment and ADAS ECUs. IC Role / Device Role: Input-stage TVS between battery feed and DC/DC enable pin or VIN pin. Use Value: Withstands ISO 7637-2 Pulse 1 (–100 V/2 Ω) and Pulse 2b (−100 V/50 Ω), ensuring system uptime during load dump events. |
| Industrial Lighting Driver | Telecom Power Adapter |
Use Scenario: Overvoltage protection for constant-current LED drivers exposed to AC line transients and hot-swap events. IC Role / Device Role: TVS across output terminals or across input bridge rectifier outputs. Use Value: 128 V VWM allows operation with 100–120 VRMS rectified input (≈140–170 VDC peak), while clamping limits stress on driver FETs. | Use Scenario: Secondary-side surge suppression in universal-input (90–264 VAC) adapters powering PoE switches or base stations. IC Role / Device Role: TVS on +12 V or +48 V output rail to protect connected equipment from adapter-level faults. Use Value: 207 V clamping voltage ensures connected devices remain within absolute maximum ratings during IEC 61000-4-5 2 kV surge tests. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ150A | DO-214AA (SMB) package; same VWM/VBR/VC specs but higher IPPM (2.2 A) and 600 W rating | Higher power handling suits 48 V telecom systems with larger surge margins; requires larger PCB footprint | Select SMBJ150A when board space permits and peak surge energy exceeds 400 W capability of P4SMA150A |
| 1.5SMC150A | DO-214AB (SMC) package; identical electrical specs but 1500 W peak power rating and 10 A IPPM | Designed for front-end AC/DC input protection where higher energy transients occur; not drop-in due to larger body and lead spacing | Choose 1.5SMC150A for primary-side AC input protection where IEC 61000-4-5 Level 4 (4 kV) testing applies |
Compared with SMBJ150A and 1.5SMC150A, the P4SMA150A offers optimal balance of compact DO-214AC footprint, 400 W surge capability, and cost efficiency for secondary-side and mid-rail protection - making it ideal for space-constrained 24–48 V embedded power modules where full SMC-level ruggedness is unnecessary.
Availability
P4SMA150A is available at Aetrix Electronics and suitable for switching mode power supplies, automotive DC/DC converters, and industrial lighting drivers requiring stable component supply and RoHS-compliant, halogen-free construction.
Supply support for P4SMA150A 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 P4SMA series belongs to TSC's surface-mount TVS portfolio engineered specifically for automated assembly and high-reliability transient suppression in compact power conversion systems.
FAQ
What is the polarity configuration of the P4SMA150A?
The P4SMA150A is a unidirectional TVS diode, configured with an anode and cathode terminal. The cathode is marked by a band on the DO-214AC (SMA) package body. It conducts in reverse bias during overvoltage events and blocks current up to 128 V in normal operation - unlike bidirectional variants (e.g., P4SMA150CA), the P4SMA150A does not conduct symmetrically in both directions.
Does the P4SMA150A meet automotive surge immunity standards?
Yes, the P4SMA150A meets ISO 7637-2 requirements for Pulse 1 (inductive load dump), Pulse 2a/2b (supply interruption and switching transients), and Pulse 3a/3b (capacitive coupling). Its 207 V clamping voltage at 2.0 A and 128 V working stand-off voltage make it suitable for protecting 24 V and 48 V automotive subsystems, including body control modules and infotainment power rails.
What is the maximum junction temperature rating for the P4SMA150A?
The P4SMA150A has a maximum junction temperature (TJ) rating of +150 °C and a storage temperature range of –55 °C to +150 °C. Derating of peak pulse power begins above 25 °C ambient per the manufacturer's Fig.2 curve, ensuring reliable operation in enclosed power supplies and under-hood environments where thermal management is constrained.
How does the P4SMA150A compare to the P4SMA150 (non-A) variant?
The P4SMA150A features tighter breakdown voltage tolerance (143–158 V, ±5.3%) versus the P4SMA150 (135–165 V, ±11.1%). This improved VBR consistency reduces design margin uncertainty and improves predictability in clamping behavior - especially critical in systems with narrow voltage tolerances, such as regulated 12 V or 24 V rails where over-clamping could trigger undervoltage lockout.
Is the P4SMA150A compatible with lead-free reflow soldering processes?
Yes, the P4SMA150A uses matte tin-plated leads compliant with J-STD-002 and is rated for moisture sensitivity level (MSL) 1 per J-STD-020 - meaning it can be subjected to standard Pb-free reflow profiles (peak ~260 °C) without baking or special handling. Its DO-214AC package and glass-passivated junction ensure robustness through multiple thermal cycles.
P4SMA150A 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):
- 128V
- Voltage - Breakdown (Min):
- 143V
- Voltage - Clamping (Max) @ Ipp:
- 207V
- Current - Peak Pulse (10/1000µs):
- 2A
- 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)
P4SMA150A FAQ
1.How can I place an order for P4SMA150A through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA150A 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 P4SMA150A reliable?
The price and inventory of P4SMA150A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA150A is usually 5 days.
3.What payment methods are accepted for P4SMA150A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA150A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA150A?
P4SMA150A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA150A 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 P4SMA150A?
For technical support, including P4SMA150A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA150A requirements.
6.How does Aetrix verify that P4SMA150A is sourced from the original manufacturer or authorized distributors?
All P4SMA150A 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 P4SMA150A meets industry standards.
7.What is the process for return or replacement of P4SMA150A?
All P4SMA150A units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA150A, 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 P4SMA150A part is unused and in its original packaging.
Return procedure for P4SMA150A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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