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Taiwan Semiconductor Corporation P4SMA8.2CA
- Part No.:
- P4SMA8.2CA
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA8.2CA.pdf
- Description:
- TVS DIODE 7.02VWM 12.1VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:6,169
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Product details
Overview
P4SMA8.2CA from Taiwan Semiconductor is a bidirectional 400W surface-mount transient voltage suppressor (TVS) diode in DO-214AC (SMA) package, with a working stand-off voltage of 7.02 V, breakdown voltage range of 7.79–8.61 V at 10 mA, and clamping voltage of 12.1 V at 34 A peak pulse current. It protects DC/DC converters and lighting circuits against ISO 7637-2 Pulse 1/2a/2b/3a/3b transients.
For engineers reviewing the P4SMA8.2CA datasheet, P4SMA8.2CA pinout, P4SMA8.2CA application, or P4SMA8.2CA equivalent, key selection criteria include bidirectional clamping capability, 12.1 V max clamping at 34 A (10/1000 μs), <1 μA leakage at 7.02 V, ±0.065 %/°C VBR temperature coefficient, and DO-214AC mechanical compatibility with automated SMT placement.
Technical Context
The P4SMA8.2CA is a glass-passivated, bipolar junction TVS diode designed for unidirectional or bidirectional surge suppression in low-voltage DC systems. Its symmetrical breakdown behavior enables identical clamping in both polarities, meeting ISO 7637-2 automotive transient immunity requirements without polarity-sensitive layout constraints.
It operates across –55 °C to +150 °C junction temperature, with <1.0 ps response time and <1 μA reverse leakage above 7.02 V. The device uses a single-die DO-214AC construction with matte tin-plated leads compliant with J-STD-002 solderability and JESD 201 Class 2 whisker resistance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 7.02 V - Maximum continuous reverse voltage before significant leakage; sets upper limit for safe DC operating margin. |
| VBR min/max | 7.79–8.61 V @ 10 mA - Confirmed breakdown range ensures predictable turn-on during transients. |
| VC @ IPPM | 12.1 V @ 34 A (10/1000 μs) - Clamping voltage defines worst-case overvoltage seen by protected ICs. |
| PPPM | 400 W - Peak pulse power rating determines survivability under standardized surge waveforms. |
| IR @ VWM | <1 μA - Ultra-low leakage preserves efficiency in battery-powered or high-impedance sensing nodes. |
| TJ max | +150 °C - Enables use in under-hood automotive or enclosed industrial power supplies. |
| Package | DO-214AC (SMA) - Standardized SMT footprint compatible with IPC-7351B land patterns and reflow profiles. |
Pinout & Package
DO-214AC (SMA) surface-mount package with cathode band marking; dual-terminal configuration; matte tin-plated leads; weight ≈ 0.060 g; UL 94V-0 molding compound.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current sink (bidirectional) | Accepts positive or negative surge current relative to cathode; no polarity dependency in CA variant. |
| Cathode | Transient current source (bidirectional) | Provides reference node for symmetrical clamping; marked with band on body per JEDEC DO-214AC standard. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Identical VBR and VC performance in both directions eliminates need for polarity-aware PCB routing. |
| ISO 7637-2 compliance | Validated for Pulse 1 (inductive load dump), Pulse 2a/2b (switching transients), and Pulse 3a/3b (line impedance stabilization network events). |
| Fast response time | <1.0 ps enables protection of high-speed logic and analog interfaces before damage occurs. |
| Moisture sensitivity level 1 | No floor life limitation or baking requirement prior to reflow; supports standard SMT assembly without special handling. |
| Halogen-free & RoHS | Complies with IEC 61249-2-21 and EU RoHS Directive 2011/65/EU for environmentally constrained applications. |
Applications
| Automotive Lighting Modules | Industrial DC/DC Converters |
|---|---|
Use Scenario: LED headlamp drivers exposed to load-dump transients during vehicle battery disconnect/reconnect events. IC Role / Device Role / Timing Role: Bidirectional TVS clamp limiting input rail overvoltage to ≤12.1 V during ISO 7637-2 Pulse 5a surges. Use Value: Prevents gate oxide rupture in MOSFET controllers and overvoltage damage to LED driver ICs operating at 8–12 V nominal. | Use Scenario: 12 V input to isolated 3.3 V/5 V DC/DC converter in programmable logic controller (PLC) backplane. IC Role / Device Role / Timing Role: Primary-side transient suppressor absorbing coupled noise from adjacent relay coils and motor drives. Use Value: Maintains input regulation integrity by clamping spikes before they trigger undervoltage lockout or cause transformer saturation. |
| USB-C Power Delivery Adapters | Smart Building Sensor Nodes |
Use Scenario: Secondary-side 5–20 V output rails in GaN-based USB PD adapters subject to ESD and line transients. IC Role / Device Role / Timing Role: Output rail protector placed after secondary-side synchronous rectifier, before USB-C CC logic and PD controller. Use Value: Limits transient overshoot to within ±12.1 V window, preserving USB PD communication integrity and preventing VCONN latch-up. | Use Scenario: Battery-powered Zigbee/Z-Wave sensor hub with integrated 8.2 V LDO powering RF SoC and environmental sensors. IC Role / Device Role / Timing Role: Standby-mode TVS maintaining <1 μA leakage while providing fast clamping during ESD events on wired interface lines. Use Value: Extends battery life via ultra-low IR and prevents false resets or sensor data corruption during field ESD exposure. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ8.0CA | 600 W PPPM; DO-214AA (SMB) package; VWM = 6.8 V; VC = 12.0 V @ 50 A | Higher power rating suits higher-energy transients; larger footprint requires PCB redesign. | Select when system-level surge testing exceeds 400 W but space allows SMB package. |
| 1.5SMC8.2CA | 1500 W PPPM; DO-214AB (SMC) package; VWM = 7.02 V; VC = 12.3 V @ 123 A | Designed for industrial mains-connected equipment; significantly larger thermal mass and board area. | Choose for legacy 1500 W IEC 61000-4-5 Level 4 compliance where DO-214AC is insufficient. |
Compared with SMBJ8.0CA and 1.5SMC8.2CA, the P4SMA8.2CA delivers optimal balance of compact DO-214AC footprint, 400 W surge capacity, and sub-1 μA leakage-making it ideal for space-constrained, battery-aware, or automotive-grade DC/DC front-end protection where 600 W+ rating is unnecessary.
Availability
P4SMA8.2CA is available at Aetrix Electronics and suitable for automotive lighting modules, industrial DC/DC converters, and USB-C power delivery adapters requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for P4SMA8.2CA 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 markets.
The P4SMA series targets cost-sensitive, high-volume transient protection applications where reliability, automated assembly compatibility, and ISO 7637-2 compliance are mandatory-particularly in automotive subsystems and regulated power supplies.
FAQ
What does the 'CA' suffix indicate in P4SMA8.2CA?
The 'CA' suffix denotes a bidirectional configuration: the P4SMA8.2CA provides symmetrical clamping in both polarities, unlike unidirectional 'A' variants. This enables use in AC-coupled or polarity-agnostic DC protection paths without requiring orientation-specific placement. The P4SMA8.2CA achieves identical VBR (7.79–8.61 V) and VC (12.1 V) performance regardless of voltage polarity applied across its terminals.
How does P4SMA8.2CA meet ISO 7637-2 compliance?
The P4SMA8.2CA is characterized and rated to withstand ISO 7637-2 Pulse 1 (inductive switch-off), Pulse 2a/2b (battery interruption), and Pulse 3a/3b (capacitive coupling) waveforms. Its 400 W peak pulse power, <1.0 ps response time, and 12.1 V clamping voltage ensure protected circuits remain within safe operating limits during these standardized automotive transients-verified per test conditions in TSC's S2102 datasheet.
Can P4SMA8.2CA replace P4SMA8.2A in an existing design?
No-P4SMA8.2CA is bidirectional while P4SMA8.2A is unidirectional. Substituting P4SMA8.2CA for P4SMA8.2A introduces symmetrical clamping that may interfere with DC biasing in circuits relying on unidirectional blocking. The P4SMA8.2CA must be validated in context: its bidirectional behavior affects leakage path analysis, ground-referenced transient coupling, and failure mode assumptions in the original P4SMA8.2A design.
What is the maximum junction temperature rating for P4SMA8.2CA?
The P4SMA8.2CA has a maximum junction temperature (TJ MAX) of +150 °C, as specified in the Absolute Maximum Ratings table. This rating permits operation in under-hood automotive environments, enclosed industrial power supplies, and high-ambient-temperature LED driver housings-provided PCB copper area, airflow, and power dissipation remain within thermal derating curves shown in Figure 2 of the TSC S2102 datasheet.
Is P4SMA8.2CA compliant with lead-free soldering standards?
Yes-the P4SMA8.2CA features matte tin-plated leads qualified per J-STD-002 for solderability and compatible with standard Pb-free reflow profiles (e.g., JEDEC J-STD-020). Its DO-214AC package withstands peak temperatures up to 260 °C for 10 seconds, and the device meets RoHS Directive 2011/65/EU and halogen-free requirements per IEC 61249-2-21.
P4SMA8.2CA 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):
- 7.02V
- Voltage - Breakdown (Min):
- 7.79V
- Voltage - Clamping (Max) @ Ipp:
- 12.1V
- Current - Peak Pulse (10/1000µs):
- 34A
- 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)
P4SMA8.2CA FAQ
1.How can I place an order for P4SMA8.2CA through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA8.2CA 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 P4SMA8.2CA reliable?
The price and inventory of P4SMA8.2CA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA8.2CA is usually 5 days.
3.What payment methods are accepted for P4SMA8.2CA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA8.2CA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA8.2CA?
P4SMA8.2CA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA8.2CA 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 P4SMA8.2CA?
For technical support, including P4SMA8.2CA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA8.2CA requirements.
6.How does Aetrix verify that P4SMA8.2CA is sourced from the original manufacturer or authorized distributors?
All P4SMA8.2CA 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 P4SMA8.2CA meets industry standards.
7.What is the process for return or replacement of P4SMA8.2CA?
All P4SMA8.2CA units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA8.2CA, 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 P4SMA8.2CA part is unused and in its original packaging.
Return procedure for P4SMA8.2CA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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