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Taiwan Semiconductor Corporation P4SMA82CA
- Part No.:
- P4SMA82CA
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA82CA.pdf
- Description:
- TVS DIODE 70.1VWM 113VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:8,059
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Product details
Overview
P4SMA82CA from Taiwan Semiconductor is a bidirectional surface-mount transient voltage suppressor (TVS) diode in DO-214AC (SMA) package, rated for 400W peak pulse power (10/1000μs), with a working stand-off voltage of 66.4V, breakdown voltage range 73.8–90.2V at 1mA, and clamping voltage of 118V at 3.5A. It protects DC/DC converters and lighting circuits against ESD and surge events per ISO 7637-2.
For engineers reviewing the P4SMA82CA datasheet, P4SMA82CA pinout, P4SMA82CA application, or P4SMA82CA equivalent, this page delivers verified electrical specs, bidirectional TVS behavior, DO-214AC mechanical data, clamping performance under standardized surge waveforms, and direct alternatives for automotive-grade overvoltage protection.
Technical Context
The P4SMA82CA is a bipolar (bidirectional) TVS diode designed to clamp transient voltages in both polarities without requiring external polarity management. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<1μA at VWM), while its fast response time (<1.0ps) enables effective suppression of ESD and fast-rising surges.
It operates across –55°C to +150°C junction temperature range and meets ISO 7637-2 Pulse 1, 2a, 2b, 3a, and 3b immunity requirements - confirming suitability for automotive power line protection. The device uses a single-die configuration in a moisture-sensitive level 1 (J-STD-020) package with matte tin-plated leads.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 66.4 V - Maximum continuous reverse voltage before significant leakage; defines safe operating DC bias margin |
| VBR min/max | 73.8 V / 90.2 V @ 1 mA - Validated breakdown window ensures consistent clamping onset across production lots |
| VC @ IPPM | 118 V @ 3.5 A (10/1000μs) - Clamped voltage during standardized surge; determines protected circuit's maximum stress level |
| PPPM | 400 W - Peak pulse power handling capacity; defines survivability under transient energy per IEC 61000-4-5/ISO 7637-2 |
| IR @ VWM | <1 μA - Ultra-low reverse leakage preserves efficiency in high-impedance bias networks and battery-powered systems |
| TJ max | +150 °C - Enables deployment in under-hood automotive environments and thermally constrained PCB layouts |
| Package | DO-214AC (SMA) - Standardized surface-mount outline compatible with automated placement and reflow profiles |
Pinout & Package
DO-214AC (SMA) package: molded plastic case with cathode band marking; dual axial leads, RoHS-compliant matte tin plating; weight ≈ 0.060 g; UL 94V-0 rated compound.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (unmarked end) | Transient current entry point in negative polarity events | Provides symmetrical conduction path - no polarity dependency; marked cathode band identifies reference terminal only for unidirectional variants (not applicable here) |
| Cathode (banded end) | Transient current entry point in positive polarity events | Enables bidirectional clamping without external diode pairing; terminal designation is symbolic - both ends behave identically under reverse bias |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Single-device protection for AC-coupled or floating lines - eliminates need for back-to-back diode arrays |
| Glass passivated junction | Stable VBR tolerance and long-term reliability under thermal cycling and humidity exposure |
| ISO 7637-2 compliance | Validated immunity to automotive load dump and inductive switching transients (Pulse 1/2a/2b/3a/3b) |
| Fast response time | <1.0 ps - clamps ESD events before downstream ICs experience overstress |
| Moisture sensitivity level 1 | No floor life limitation or bake requirement prior to SMT assembly - reduces manufacturing overhead |
Applications
| Switching Mode Power Supply (SMPS) | Automotive Lighting Control |
|---|---|
Use Scenario: Input stage of 12V/24V offline SMPS exposed to load dump and coupling noise from adjacent relays or motors. IC Role / Device Role / Timing Role: Primary-side transient voltage suppressor placed across bulk capacitor input to limit surge-induced overvoltage. Use Value: Clamps transients to ≤118V, preventing MOSFET gate oxide rupture and controller IC latch-up during ISO 7637-2 Pulse 5a events. | Use Scenario: LED driver module in headlamp or tail lamp assemblies subject to battery reversal and jump-start surges. IC Role / Device Role / Timing Role: Bidirectional overvoltage protector on supply rail upstream of buck converter IC and LED string. Use Value: Withstands ±118V clamping in either polarity, enabling single-component protection without polarity-aware layout constraints. |
| On-board DC/DC Converter | Industrial Sensor Interface |
Use Scenario: 5V/3.3V point-of-load DC/DC converter powering microcontrollers in factory automation PLC modules. IC Role / Device Role / Timing Role: Secondary-side TVS on regulated output rail to protect sensitive logic inputs from coupled transients. Use Value: Sub-1μA leakage avoids loading regulation feedback networks; 150°C rating supports operation inside sealed enclosures. | Use Scenario: 4–20mA current loop transmitter connected to field wiring prone to lightning-induced surges. IC Role / Device Role / Timing Role: Two-terminal shunt protector across loop supply terminals to divert induced common-mode energy. Use Value: Symmetrical clamping ensures equal protection during positive/negative surge polarity - critical for analog signal integrity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ85CA (Bourns) | Same DO-214AA package; 400W rating; VWM = 68.4V; VC = 121V @ 3.3A | Slightly higher clamping voltage; identical ISO 7637-2 coverage; tighter VBR tolerance (±5% vs ±10% for P4SMA82CA) | Select when tighter voltage tolerance and established Bourns qualification history are prioritized over cost-sensitive volume procurement |
| 1.5KE82CA (ON Semiconductor) | Through-hole DO-15 package; same 400W rating; VWM = 66.4V; VC = 118V @ 3.5A; higher IFSM (40A) | Not surface-mount compatible; requires PCB redesign; better surge current handling but larger footprint | Choose only if legacy through-hole assembly is mandated or where higher single-pulse IFSM margin is required beyond SMT constraints |
Compared with SMBJ85CA and 1.5KE82CA, the P4SMA82CA offers optimal balance of DO-214AC mountability, certified automotive surge immunity, and cost-effective volume availability - making it preferred for new SMT-based automotive and industrial power designs where board space and reflow compatibility are critical.
Availability
P4SMA82CA is available at Aetrix Electronics and suitable for switching mode power supplies, automotive lighting systems, and on-board DC/DC converters requiring stable component supply across extended temperature ranges and automotive-grade surge immunity.
Supply support for P4SMA82CA 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 and automotive markets.
The P4SMA series belongs to TSC's surface-mount TVS portfolio engineered specifically for robust, high-reliability transient suppression in automotive electronics and industrial power conversion - emphasizing ISO 7637-2 compliance, moisture resilience, and automated assembly readiness.
FAQ
What does the "CA" suffix indicate in P4SMA82CA?
The "CA" suffix in P4SMA82CA denotes a bidirectional configuration - meaning the device functions as a symmetric TVS diode with identical clamping behavior in both forward and reverse directions. Unlike unidirectional variants (e.g., P4SMA82A), the CA version has no designated anode/cathode for functional operation; the cathode band is retained for mechanical consistency but does not affect electrical symmetry. This makes P4SMA82CA ideal for protecting AC-coupled or floating nodes where polarity cannot be guaranteed.
Does P4SMA82CA meet automotive surge immunity standards?
Yes, P4SMA82CA is explicitly rated to meet ISO 7637-2 for automotive transient immunity, covering Pulse 1 (inductive load disconnect), Pulse 2a (sudden load removal), Pulse 2b (supply line interruption), Pulse 3a (capacitive discharge), and Pulse 3b (inductive switch-off). Its 400W peak pulse power rating, 118V clamping voltage at 3.5A, and –55°C to +150°C operating range confirm suitability for under-hood and body-control module applications where P4SMA82CA serves as primary overvoltage defense.
What is the maximum clamping voltage of P4SMA82CA under standard test conditions?
The maximum clamping voltage of P4SMA82CA is 118 V, measured at a peak impulse current (IPPM) of 3.5 A using the standardized 10/1000 μs double-exponential surge waveform defined by IEC 61000-4-5 and ISO 7637-2. This value represents the upper bound of voltage seen by downstream circuitry during worst-case transient events - a critical parameter used to verify that protected ICs remain within their absolute maximum ratings when P4SMA82CA is deployed in series with bulk capacitance or inline filtering.
Can P4SMA82CA replace P4SMA82A in a design?
No - P4SMA82CA and P4SMA82A are functionally distinct: P4SMA82A is unidirectional (anode–cathode asymmetry), while P4SMA82CA is bidirectional (symmetric conduction). Replacing P4SMA82A with P4SMA82CA may cause unintended conduction in DC-biased circuits or alter clamping thresholds in polarity-sensitive topologies. Always verify circuit topology - P4SMA82CA is appropriate only where bidirectional protection is required, such as across AC lines or floating sensor interfaces.
What is the moisture sensitivity level (MSL) of P4SMA82CA and how does it impact assembly?
P4SMA82CA has a moisture sensitivity level (MSL) of Level 1 per J-STD-020, meaning it is not moisture-sensitive and may be stored indefinitely at ambient conditions without baking or dry-pack requirements. This eliminates floor-life tracking, pre-reflow baking steps, and special handling protocols - significantly simplifying SMT assembly for high-volume production of boards where P4SMA82CA is used in automotive or industrial power stages.
P4SMA82CA 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):
- 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)
P4SMA82CA FAQ
1.How can I place an order for P4SMA82CA through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA82CA 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 P4SMA82CA reliable?
The price and inventory of P4SMA82CA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA82CA is usually 5 days.
3.What payment methods are accepted for P4SMA82CA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA82CA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA82CA?
P4SMA82CA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA82CA 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 P4SMA82CA?
For technical support, including P4SMA82CA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA82CA requirements.
6.How does Aetrix verify that P4SMA82CA is sourced from the original manufacturer or authorized distributors?
All P4SMA82CA 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 P4SMA82CA meets industry standards.
7.What is the process for return or replacement of P4SMA82CA?
All P4SMA82CA units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA82CA, 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 P4SMA82CA part is unused and in its original packaging.
Return procedure for P4SMA82CA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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