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Taiwan Semiconductor Corporation P4SMA82AH
- Part No.:
- P4SMA82AH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA82AH.pdf
- Description:
- TVS DIODE 70.1VWM 113VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:3,738
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Product details
Overview
P4SMA82AH from Taiwan Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in DO-214AC (SMA) package, rated for 400W peak pulse power, 70.1V working stand-off voltage, and 113V maximum clamping voltage at 3.7A 10/1000μs surge current. It delivers AEC-Q101 qualification and meets ISO 7637-2 Pulse 1/2a/2b/3a/3b for automotive power line protection.
For engineers reviewing the P4SMA82AH datasheet, P4SMA82AH pinout, P4SMA82AH application, or P4SMA82AH equivalent, key selection criteria include its 77.9–86.1V breakdown range at 1mA, <1μA reverse leakage at VWM, glass-passivated junction, and suitability for DC/DC converter input rail protection where fast clamping (<1ps response) and low capacitance are critical.
Technical Context
The P4SMA82AH operates as a unidirectional avalanche diode with a single-die configuration optimized for transient suppression on DC power lines. Its electrical behavior follows the IEC 61000-4-5 and ISO 7637-2 standards, featuring a tightly controlled 77.9–86.1V breakdown voltage window and temperature coefficient of 0.105%/°C.
Designed for automated SMT placement, it uses matte tin-plated leads compliant with J-STD-002 and passes JESD 201 Class 2 whisker testing. The device sustains 40A non-repetitive forward surge (8.3ms half-sine) and maintains stable clamping performance across –55°C to +150°C junction temperature range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 70.1 V - Maximum continuous reverse operating voltage before significant leakage; sets safe DC rail margin for 72–75V nominal systems |
| VBR @ IT=1mA | 77.9–86.1 V - Measured breakdown range defining turn-on threshold under standardized test conditions |
| VC @ IPPM=3.7A | 113 V - Clamped voltage during 10/1000μs surge; determines maximum stress on downstream circuitry |
| PPPM | 400 W - Peak pulse power handling capability per single transient event, derated above 25°C ambient |
| IR @ VWM | <1 μA - Reverse leakage current at stand-off voltage; ensures minimal standby power loss and signal integrity |
| TJ Range | –55°C to +150°C - Full operational junction temperature range supporting under-hood automotive and industrial environments |
Pinout & Package
DO-214AC (SMA) surface-mount package with cathode band marking; 0.060g mass; UL 94V-0 molding compound; matte tin-plated leads.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to system ground or lower-potential rail during transient clamp operation |
| Cathode | Reverse-biased terminal | Connected to protected line (e.g., DC input); conducts avalanche current when VLINE exceeds VBR |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD robustness per stress test requirements |
| Glass passivated junction | Enhances long-term stability and moisture resistance versus epoxy-passivated alternatives, critical for high-humidity environments |
| Fast response time | <1.0 ps - Enables suppression of nanosecond-scale transients before sensitive ICs experience overstress |
| ISO 7637-2 compliance | Rated for Pulse 1 (inductive load dump), Pulse 2a/2b (switching transients), and Pulse 3a/3b (capacitive coupling), covering full automotive EMC immunity |
Applications
| Switching Mode Power Supply (SMPS) | On-board DC/DC Converter |
|---|---|
Use Scenario: Input stage protection against load dump and back-EMF spikes in 48V telecom or industrial SMPS units. IC Role / Device Role / Timing Role: Unidirectional TVS placed between input rail and ground to clamp surges before primary controller ICs. Use Value: Limits peak voltage to 113V during 400W transients, preventing damage to MOSFET gate oxides and PWM controllers rated ≤150V. | Use Scenario: Protection of 12V or 24V intermediate bus rails in automotive ADAS domain controllers. IC Role / Device Role / Timing Role: Standoff-rated TVS on DC/DC input to absorb ISO 7637-2 Pulse 1 (−100V/2Ω/50ms) without degradation. Use Value: Maintains 70.1V working stand-off while clamping to 113V, ensuring regulator ICs remain within absolute maximum ratings during cold-crank events. |
| Lighting Application | Automotive Body Control Module (BCM) |
Use Scenario: Surge suppression on LED driver inputs exposed to battery line transients in commercial vehicle lighting. IC Role / Device Role / Timing Role: Primary overvoltage guard on constant-current LED supply input, upstream of buck controller. Use Value: Withstands repeated 10/1000μs pulses up to 400W and exhibits <1μA leakage at 70.1V, minimizing standby current in always-on lighting systems. | Use Scenario: Input rail protection for microcontroller-based BCMs subjected to alternator load dump and relay switching noise. IC Role / Device Role / Timing Role: AEC-Q101-qualified unidirectional TVS on 12V main supply, referenced to chassis ground. Use Value: Delivers certified immunity to ISO 7637-2 Pulse 2b (50V/50Ω/2ms) and Pulse 3b (±200V/50Ω/5ns), meeting OEM BCM EMC specifications. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ80A | DO-214AA (SMB) package; 80V VWM, 125V VC @ 3.2A; same 400W rating but higher clamping voltage | Higher thermal resistance due to smaller SMB package; less suitable for high-density layouts requiring SMA footprint | Select when board space allows larger standoff or when legacy SMB layout exists |
| 1.5SMC82A | DO-214AB (SMC) package; 82V VWM, 125V VC @ 3.2A; 1500W rating but physically larger and higher cost | Over-specified power handling increases PCB area and BOM cost without benefit for 400W-level threats | Choose only if system-level testing requires >1000W surge margin or existing SMC footprint mandates |
Compared with SMBJ80A and 1.5SMC82A, the P4SMA82AH offers optimal balance of compact DO-214AC footprint, precise 70.1V stand-off, and 113V clamping-enabling tighter voltage margins in space-constrained automotive and industrial DC/DC designs without over-engineering.
Availability
P4SMA82AH is available at Aetrix Electronics and suitable for automotive body control modules, industrial DC/DC converters, and LED lighting drivers requiring stable component supply and AEC-Q101-compliant surge protection.
Supply support for P4SMA82AH 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 analog and discrete semiconductor manufacturer headquartered in Hsinchu, Taiwan, specializing in TVS diodes, rectifiers, and power devices since 1979.
The P4SMA82AH belongs to TSC's AEC-Q101-qualified P4SMAx(A)H series, engineered specifically for robust transient suppression in automotive power distribution networks and industrial power supplies where reliability under harsh electrical stress is mandatory.
FAQ
What is the breakdown voltage range of the P4SMA82AH?
The P4SMA82AH has a specified breakdown voltage (VBR) range of 77.9 V to 86.1 V at 1 mA test current, measured per ANSI/IEEE C62.35. This tight tolerance ensures consistent turn-on behavior across production lots and supports reliable design margining for 72–80V nominal systems. The P4SMA82AH's VBR is validated using square-wave pulses of 300 μs duration.
Is the P4SMA82AH suitable for bidirectional transient protection?
No, the P4SMA82AH is a unidirectional TVS diode intended for DC line protection with defined anode and cathode polarity. For bidirectional applications, Taiwan Semiconductor specifies parts with "CH" or "CAH" suffixes (e.g., P4SMA82CH). Using the P4SMA82AH in reverse-biased AC configurations risks permanent failure due to forward conduction during negative transients.
What is the maximum clamping voltage of the P4SMA82AH under standard surge conditions?
The P4SMA82AH clamps to a maximum of 113 V when subjected to a 10/1000 μs waveform peak impulse current of 3.7 A. This value is guaranteed across temperature and lot variations and defines the upper voltage limit imposed on protected circuitry during standardized surge events per IEC 61000-4-5.
Does the P4SMA82AH meet automotive qualification standards?
Yes, the P4SMA82AH is AEC-Q101 qualified and tested for automotive-grade reliability, including temperature cycling, high-temperature reverse bias (HTRB), and electrostatic discharge (ESD). It also meets ISO 7637-2 Pulse 1, 2a, 2b, 3a, and 3b requirements-making it suitable for use in engine control units, body control modules, and other automotive electronic control units.
What packaging and reel quantity is offered for the P4SMA82AH?
The P4SMA82AH is supplied in DO-214AC (SMA) package format on 7,500-piece tape-and-reel carriers, optimized for high-speed automated pick-and-place assembly. The lead finish is matte tin per J-STD-002, and the device complies with J-STD-020 moisture sensitivity level 1-requiring no dry pack or baking prior to reflow soldering.
P4SMA82AH 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
P4SMA82AH FAQ
1.How can I place an order for P4SMA82AH through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA82AH 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 P4SMA82AH reliable?
The price and inventory of P4SMA82AH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA82AH is usually 5 days.
3.What payment methods are accepted for P4SMA82AH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA82AH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA82AH?
P4SMA82AH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA82AH 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 P4SMA82AH?
For technical support, including P4SMA82AH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA82AH requirements.
6.How does Aetrix verify that P4SMA82AH is sourced from the original manufacturer or authorized distributors?
All P4SMA82AH 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 P4SMA82AH meets industry standards.
7.What is the process for return or replacement of P4SMA82AH?
All P4SMA82AH units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA82AH, 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 P4SMA82AH part is unused and in its original packaging.
Return procedure for P4SMA82AH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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