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Taiwan Semiconductor Corporation P4SMA82A
- Part No.:
- P4SMA82A
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA82A.pdf
- Description:
- TVS DIODE 70.1VWM 113VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:7,032
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Product details
Overview
P4SMA82A from Taiwan Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in DO-214AC (SMA) package, designed for robust overvoltage protection in DC power rails. It features a 77.9–86.1 V breakdown voltage (VBR), 70.1 V working stand-off voltage (VWM), 113 V clamping voltage (VC) at 3.7 A peak pulse current, and 400 W peak pulse power rating under 10/1000 µs waveform - deployed in on-board DC/DC converters and industrial SMPS input stages.
For engineers reviewing the P4SMA82A datasheet, P4SMA82A pinout, P4SMA82A application, or P4SMA82A equivalent, key selection criteria include verified clamping performance at rated IPPM, JEDEC-compliant DO-214AC thermal derating behavior above 25°C ambient, moisture sensitivity level 1 compliance, and ISO 7637-2 Pulse 1/2a/2b/3a/3b immunity validation for automotive-grade power electronics design.
Technical Context
The P4SMA82A operates as a unidirectional avalanche diode with glass-passivated junction, enabling sub-nanosecond response to transients (<1.0 ps typical). Its single-die construction and DO-214AC package support automated SMT placement while maintaining 150°C maximum junction temperature and -55°C to +150°C operating range.
It delivers precise voltage clamping during surge events per IEC 61000-4-5 and ISO 7637-2 standards, with <1 µA reverse leakage at VWM = 70.1 V and 0.105 %/°C temperature coefficient of VBR, ensuring stable protection threshold across extended thermal environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR @ IT = 1.0 mA | 77.9–86.1 V - defines minimum/maximum avalanche initiation voltage under standardized test condition |
| VWM | 70.1 V - maximum continuous reverse operating voltage before significant leakage begins |
| VC @ IPPM = 3.7 A | 113 V - clamped voltage during 10/1000 µs surge, limiting downstream circuit stress |
| PPPM | 400 W - peak pulse power handling capability under standard surge waveform |
| IR @ VWM | <1 µA - ensures minimal standby power loss and signal integrity in high-impedance circuits |
| TJ max | 150°C - enables reliable operation in thermally constrained PCB layouts near power components |
Pinout & Package
DO-214AC (SMA) surface-mount package with cathode band marking; matte tin-plated leads compliant with J-STD-002 solderability and JESD 201 Class 2 whisker resistance; UL 94V-0 molding compound; polarity indicated by molded cathode band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential side of protected line; conducts during forward surge or bias conditions |
| Cathode | Reverse-biased clamping terminal | Connected to higher-potential rail; avalanches into low-impedance state during overvoltage events |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures long-term reliability and stable VBR under humidity and thermal cycling per J-STD-020 Level 1 |
| Fast response time | <1.0 ps typical - limits voltage overshoot before protection engages |
| ISO 7637-2 compliance | Validated for Pulse 1 (inductive load dump), Pulse 2a/2b (switching transients), and Pulse 3a/3b (line spikes) in automotive power networks |
| RoHS & halogen-free | Complies with IEC 61249-2-21 and EU RoHS Directive 2011/65/EU for environmentally constrained applications |
Applications
| Switching Mode Power Supply (SMPS) | On-board DC/DC Converter |
|---|---|
Use Scenario: Protection of primary-side MOSFET gate drivers and secondary-side rectifier inputs against switching-induced voltage spikes and ESD. IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed across input/output rails to shunt transient energy before it reaches sensitive control ICs or power switches. Use Value: Limits VC to 113 V during 400 W surges, preventing latch-up or permanent damage to 100 V-rated MOSFETs and PWM controllers. | Use Scenario: Input rail protection in point-of-load (POL) converters powering FPGAs, microcontrollers, or sensors in industrial PLC modules. IC Role / Device Role / Timing Role: Standoff voltage (70.1 V) allows compatibility with 48 V nominal bus systems while clamping fast transients from relay switching or cable coupling. Use Value: Sub-1 µA leakage at VWM avoids loading low-power sleep modes; DO-214AC footprint supports high-density layout without thermal compromise. |
| Lighting Application | Automotive Body Control Module (BCM) |
Use Scenario: Surge suppression on LED driver input lines exposed to load-dump events in commercial lighting ballasts and streetlight controllers. IC Role / Device Role / Timing Role: Primary overvoltage guard on AC-DC front-end or DC input stage, absorbing energy from inductive kickback and lightning-induced surges. Use Value: 400 W peak power rating sustains multiple ISO 7637-2 Pulse 5a (load dump) events without degradation; UL 94V-0 housing prevents flame propagation in enclosed fixtures. | Use Scenario: Input protection for 12 V/24 V supply rails feeding microcontroller-based door lock actuators, window lift motors, and interior lighting drivers. IC Role / Device Role / Timing Role: Unidirectional TVS placed upstream of LDOs and CAN transceivers to prevent system reset or communication failure during battery disconnect/load dump. Use Value: Verified Pulse 1/2a/2b/3a/3b immunity ensures compliance with OEM-level EMC requirements; MSL Level 1 enables standard reflow without baking. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ80A (Bourns) | DO-214AA (SMB) package; 80 V VBR min (76–84 V); 110 V VC @ 3.6 A; same 400 W rating | Larger footprint (SMB vs SMA) requires PCB redesign; slightly lower clamping voltage | Select when board space allows larger package and tighter VC tolerance is prioritized |
| 1.5SMC82A (ON Semiconductor) | DO-214AB (SMC) package; 82 V VBR min (77.9–86.1 V); 113 V VC @ 3.7 A; identical electrical specs but higher thermal mass | SMC package offers better thermal dissipation but occupies ~2.5× PCB area of DO-214AC | Choose for high-reliability industrial designs where sustained surge duty cycle exceeds DO-214AC derating limits |
Compared with SMBJ80A and 1.5SMC82A, the P4SMA82A provides optimal balance of compact DO-214AC footprint, validated ISO 7637-2 immunity, and precise 70.1 V standoff-making it preferred for space-constrained automotive and industrial DC/DC modules requiring MSL Level 1 manufacturability.
Availability
P4SMA82A is available at Aetrix Electronics and suitable for switching mode power supplies, on-board DC/DC converters, and automotive body control modules requiring stable component supply with full traceability and lifecycle management.
Supply support for P4SMA82A 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 Company (TSC) is a vertically integrated semiconductor manufacturer specializing in discrete power devices, TVS diodes, and rectifiers with global distribution and AEC-Q200 qualified product lines.
The P4SMA series belongs to TSC's surface-mount TVS portfolio engineered for high-reliability transient suppression in automotive, industrial, and lighting applications - emphasizing MSL Level 1 compatibility, ISO 7637-2 validation, and tight parametric tolerances.
FAQ
What is the maximum clamping voltage of the P4SMA82A under standard surge conditions?
The P4SMA82A has a maximum clamping voltage (VC) of 113 V when subjected to a 10/1000 µs impulse waveform at its rated peak pulse current of 3.7 A. This value is measured per IEC 61000-4-5 and is guaranteed across the full operating temperature range, ensuring predictable overvoltage limiting for downstream components in the P4SMA82A-protected circuit.
Is the P4SMA82A suitable for bidirectional transient protection?
No, the P4SMA82A is a unidirectional TVS diode intended for DC line protection with defined anode-cathode polarity. For bidirectional applications, Taiwan Semiconductor specifies the P4SMA82CA variant (with "C" or "CA" suffix), which uses a symmetrical dual-diode configuration. Using P4SMA82A in AC or reverse-biased scenarios may result in unintended conduction or failure.
What is the moisture sensitivity level (MSL) rating for the P4SMA82A?
The P4SMA82A is rated at Moisture Sensitivity Level 1 per J-STD-020, meaning it can be stored indefinitely at ≤30°C/85% RH and is compatible with standard SMT reflow profiles without pre-baking. This eliminates handling constraints in high-volume manufacturing and supports direct placement from tape-and-reel packaging.
Does the P4SMA82A meet automotive electromagnetic compatibility standards?
Yes, the P4SMA82A is explicitly validated to meet ISO 7637-2 for automotive transient immunity, covering Pulse 1 (inductive load dump), Pulse 2a/2b (switching transients), and Pulse 3a/3b (capacitive coupling spikes). This makes it suitable for use in 12 V and 24 V vehicle subsystems including body control modules and infotainment power supplies.
What is the thermal derating behavior of the P4SMA82A above 25°C ambient temperature?
The P4SMA82A follows a linear derating curve per Figure 2 in its datasheet: peak pulse power decreases from 400 W at 25°C to approximately 200 W at 100°C ambient. This behavior is critical for thermal design in enclosed enclosures or near heat-generating components, and must be accounted for in worst-case surge duty cycle analysis for the P4SMA82A.
P4SMA82A 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):
- 70.1V
- Voltage - Breakdown (Min):
- 77.9V
- Voltage - Clamping (Max) @ Ipp:
- 113V
- Current - Peak Pulse (10/1000µs):
- 3.7A
- 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)
P4SMA82A FAQ
1.How can I place an order for P4SMA82A through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA82A 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 P4SMA82A reliable?
The price and inventory of P4SMA82A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA82A is usually 5 days.
3.What payment methods are accepted for P4SMA82A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA82A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA82A?
P4SMA82A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA82A 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 P4SMA82A?
For technical support, including P4SMA82A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA82A requirements.
6.How does Aetrix verify that P4SMA82A is sourced from the original manufacturer or authorized distributors?
All P4SMA82A 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 P4SMA82A meets industry standards.
7.What is the process for return or replacement of P4SMA82A?
All P4SMA82A units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA82A, 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 P4SMA82A part is unused and in its original packaging.
Return procedure for P4SMA82A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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