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Taiwan Semiconductor Corporation P4SMA82C
- Part No.:
- P4SMA82C
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA82C.pdf
- Description:
- 400W, 82V, 10%, BIDIRECTIONAL, T
- Quantity:
- Payment:
- Shipping:
Inventory:2,009
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Product details
Overview
P4SMA82C from Taiwan Semiconductor is a unidirectional 400W surface-mount transient voltage suppressor (TVS) diode with a working stand-off voltage of 66.4 V, breakdown voltage range 73.8–90.2 V at 1 mA, and clamping voltage of 118 V at 3.5 A peak pulse current under 10/1000 µs waveform - deployed for overvoltage protection in DC/DC converters and industrial power supplies.
For engineers reviewing the P4SMA82C datasheet, P4SMA82C pinout, P4SMA82C application, or P4SMA82C equivalent, key selection criteria include its DO-214AC (SMA) package compatibility, bidirectional capability (C suffix), sub-1 ps response time, <1 µA reverse leakage at VWM, and ISO 7637-2 Pulse 1/2a/2b/3a/3b compliance for automotive and industrial surge immunity.
Technical Context
The P4SMA82C employs a glass-passivated silicon junction optimized for fast transient suppression, with clamping action triggered when reverse voltage exceeds its 73.8–90.2 V breakdown range. Its unidirectional configuration provides polarity-specific protection while maintaining low dynamic impedance during surge events.
Designed for surface-mount assembly on PCBs with tight thermal constraints, it operates across –55°C to +150°C junction temperature and supports peak forward surge currents up to 40 A (8.3 ms half-sine), enabling robust protection in high-reliability power conversion stages without derating below 25°C ambient.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 66.4 V - maximum continuous reverse operating voltage before conduction begins; defines safe DC blocking threshold in protected circuitry |
| VBR @ IT=1 mA | 73.8–90.2 V - breakdown voltage tolerance band confirming reliable turn-on margin above VWM |
| VC @ IPPM=3.5 A | 118 V - clamped voltage during 10/1000 µs surge; determines maximum stress imposed on downstream components |
| PPPM | 400 W - peak pulse power rating per single non-repetitive event; sets energy-handling capacity for transient immunity |
| IR @ VWM | <1 µA - ultra-low reverse leakage ensures minimal standby power loss and signal integrity in high-impedance nodes |
| Response Time | <1.0 ps - enables effective suppression of ESD and fast-rising transients before sensitive ICs are damaged |
| TJ Range | –55°C to +150°C - wide junction temperature range supports operation in under-hood automotive and industrial 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; moisture sensitivity level 1 per J-STD-020.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / Reverse surge return path | Connected to lower-potential side of protected line; conducts during positive transients in unidirectional mode |
| Cathode | Reverse voltage reference / Clamping node | Connected to higher-potential rail (e.g., VIN); initiates avalanche conduction when reverse voltage exceeds VBR |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable VBR tolerance and long-term reliability under thermal cycling and humidity exposure |
| ISO 7637-2 compliance | Validated performance against automotive load-dump and supply-transient pulses (Pulse 1/2a/2b/3a/3b) |
| DO-214AC (SMA) footprint | Enables automated placement and reflow compatibility with standard SMT lines; 0.060 g weight minimizes board stress |
| RoHS & halogen-free | Meets IEC 61249-2-21 and EU RoHS Directive 2011/65/EU for environmentally compliant manufacturing |
| UL 94V-0 molding compound | Provides flame-retardant encapsulation essential for safety-critical power electronics applications |
Applications
| Switching Mode Power Supply (SMPS) | On-board DC/DC Converter |
|---|---|
Use Scenario: Protection of primary-side MOSFETs and secondary-side rectifiers against input surges and switching-induced transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed across input bus or output rails to clamp voltage spikes before they reach controller ICs or power switches. Use Value: Limits peak voltage to ≤118 V during 400 W transients, preventing gate oxide rupture in 100 V-rated MOSFETs and ensuring >100,000-cycle reliability. |
Use Scenario: Input-side surge suppression in point-of-load (POL) converters powering FPGAs, microcontrollers, or sensors. IC Role / Device Role / Timing Role: Standoff device absorbing load-dump energy from upstream 12 V/24 V buses before regulation stage. Use Value: With 66.4 V VWM, it remains fully blocking during nominal 48 V system operation while clamping 10/1000 µs surges to 118 V. |
| Industrial Lighting Driver | Automotive Body Control Module (BCM) |
Use Scenario: Overvoltage protection for LED driver ICs subjected to inductive kickback from relay-controlled ballasts. IC Role / Device Role / Timing Role: Fast-response shunt element placed across driver output to divert transient energy away from current-sense amplifiers. Use Value: Sub-1 ps response ensures clamping activation before 10 ns rise-time transients exceed 80 V, preserving analog feedback accuracy. |
Use Scenario: CAN/LIN bus line protection and power rail conditioning in BCMs exposed to battery disconnect/load dump events. IC Role / Device Role / Timing Role: Primary-level TVS on 12 V main supply rail, coordinated with secondary TVS arrays on communication lines. Use Value: Meets ISO 7637-2 Pulse 2b (inductive switch-off) and Pulse 5a (load dump), enabling single-device compliance without external RC networks. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ85A (Bourns) | Higher VWM = 72.2 V; same DO-214AA package; 600 W rating; bidirectional variant available | Requires layout adjustment due to larger SMB package; better suited for higher-energy 600 W surges | Select when system surge energy exceeds 400 W or when DO-214AA footprint is already standardized |
| 1.5KE82C (ON Semiconductor) | Through-hole TO-204AE (DO-41); 1500 W rating; VWM = 70.1 V; slower thermal response | Not suitable for high-density SMT designs; used where manual assembly or legacy through-hole is required | Choose only for prototyping or low-volume through-hole builds where rework tolerance outweighs size constraints |
Compared with SMBJ85A and 1.5KE82C, the P4SMA82C offers optimal balance of compact DO-214AC footprint, precise 66.4 V standoff, and certified ISO 7637-2 compliance - making it preferred for space-constrained automotive and industrial SMT power rails requiring repeatable 400 W surge handling.
Availability
P4SMA82C is available at Aetrix Electronics and suitable for switching mode power supplies, on-board DC/DC converters, and industrial lighting drivers requiring stable component supply with full traceability and lifecycle management.
Supply support for P4SMA82C 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, and rectifiers with global distribution and AEC-Q200-qualified product lines.
The P4SMA82C belongs to TSC's P4SMAx series of surface-mount TVS diodes engineered for high-reliability transient suppression in automotive, industrial, and telecom power systems - emphasizing fast response, low leakage, and standardized SMA packaging.
FAQ
What is the polarity configuration of the P4SMA82C?
The P4SMA82C is a unidirectional TVS diode, indicated by the "C" suffix per TSC's ordering convention. It functions as a reverse-biased avalanche clamp with anode and cathode terminals clearly marked via cathode band on the DO-214AC package. Unlike bidirectional variants (e.g., P4SMA82CA), the P4SMA82C does not conduct symmetrically in both directions - its forward conduction follows standard diode behavior, while reverse clamping occurs only above VBR. This makes P4SMA82C ideal for DC rail protection where polarity is fixed.
Does the P4SMA82C meet automotive surge immunity standards?
Yes, the P4SMA82C meets ISO 7637-2 Pulse 1 (inductive load disconnect), Pulse 2a/2b (sudden load interruption), and Pulse 3a/3b (capacitive coupling and ignition noise) requirements as explicitly stated in the official TSC datasheet Version S2102. Its 400 W peak pulse power rating, 118 V clamping voltage at 3.5 A, and sub-1 ps response time collectively ensure robust suppression of automotive transients without requiring additional filtering components. The P4SMA82C is not AEC-Q200 qualified, so system-level validation is recommended for safety-critical modules.
What is the maximum allowable junction temperature for continuous operation of the P4SMA82C?
The P4SMA82C has a maximum junction temperature (TJ) rating of +150°C, with operational range specified from –55°C to +150°C. This rating applies under steady-state DC bias conditions and accounts for self-heating during low-duty-cycle transient events. Derating curves in Figure 2 of the TSC datasheet show that at 125°C ambient, the device retains ~65% of its 400 W peak pulse capability. For continuous operation, thermal design must ensure junction temperature stays within this limit using appropriate copper pour and airflow - especially critical in enclosed industrial enclosures or under-hood automotive locations.
How does the P4SMA82C differ from the P4SMA82A variant?
The P4SMA82C and P4SMA82A differ primarily in breakdown voltage tolerance and test current: P4SMA82C has VBR = 73.8–90.2 V at IT = 1 mA, while P4SMA82A specifies 77.9–86.1 V at the same test condition. The "C" suffix denotes unidirectional configuration with tighter VWM (66.4 V vs. 70.1 V for P4SMA82A), resulting in earlier clamping onset. Both share identical DO-214AC packaging, 400 W rating, and ISO 7637-2 compliance. Designers select P4SMA82C when precise low-threshold clamping is needed, and P4SMA82A when higher VWM margin is required to avoid false triggering.
Is the P4SMA82C compatible with lead-free reflow soldering processes?
Yes, the P4SMA82C is fully compatible with lead-free reflow soldering per J-STD-020 requirements. Its DO-214AC (SMA) package uses matte tin-plated leads rated for solderability per J-STD-002, and the molding compound meets UL 94V-0 flammability standards. The device is rated for peak reflow temperatures up to 260°C for 30 seconds, supporting standard Pb-free profiles (e.g., JEDEC J-STD-020D). Moisture sensitivity level is rated at Level 1 - meaning floor life is unlimited under dry-pack conditions, eliminating bake requirements prior to assembly.
P4SMA82C 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):
- 66.4V
- Voltage - Breakdown (Min):
- 73.8V
- Voltage - Clamping (Max) @ Ipp:
- 118V
- Current - Peak Pulse (10/1000µs):
- 3.5A
- 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)
P4SMA82C FAQ
1.How can I place an order for P4SMA82C through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA82C 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 P4SMA82C reliable?
The price and inventory of P4SMA82C are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA82C is usually 5 days.
3.What payment methods are accepted for P4SMA82C?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA82C transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA82C?
P4SMA82C orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA82C 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 P4SMA82C?
For technical support, including P4SMA82C datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA82C requirements.
6.How does Aetrix verify that P4SMA82C is sourced from the original manufacturer or authorized distributors?
All P4SMA82C 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 P4SMA82C meets industry standards.
7.What is the process for return or replacement of P4SMA82C?
All P4SMA82C units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA82C, 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 P4SMA82C part is unused and in its original packaging.
Return procedure for P4SMA82C:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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