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Taiwan Semiconductor Corporation P4SMA36A
- Part No.:
- P4SMA36A
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA36A.pdf
- Description:
- TVS DIODE 30.8VWM 49.9VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:7,380
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Product details
Overview
P4SMA36A from Taiwan Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in DO-214AC (SMA) package, rated for 400W peak pulse power (10/1000μs), 34.2–37.8V breakdown voltage at 1mA, and 49.9V maximum clamping voltage at 8.4A. It protects DC/DC converters and SMPS inputs against ESD and surge events per ISO 7637-2.
For engineers reviewing the P4SMA36A datasheet, P4SMA36A pinout, P4SMA36A application, or P4SMA36A equivalent, key selection criteria include working stand-off voltage (30.8V), low leakage (<1μA at VWM), fast response (<1.0ps), RoHS/halogen-free compliance, and UL 94V-0 molding compound suitability for high-reliability industrial power interfaces.
Technical Context
The P4SMA36A employs a glass-passivated silicon junction optimized for unidirectional surge suppression in low-inductance surface-mount layouts. Its clamping behavior is defined by a tightly controlled 34.2–37.8V VBR range at 1mA test current, with thermal derating above 25°C per Fig.2 and peak power limited to 400W under standardized 10/1000μs waveform conditions.
It operates across –55°C to +150°C junction temperature range and meets JESD201 Class 2 whisker resistance and J-STD-020 Moisture Sensitivity Level 1 requirements-enabling reflow compatibility without baking. Polarity is marked via cathode band; no internal series impedance or integrated filtering is present.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR min/max | 34.2V / 37.8V at 1mA - defines minimum and maximum voltage at which device enters avalanche conduction during surge |
| VWM | 30.8V - maximum continuous reverse operating voltage before significant leakage begins |
| VC @ IPPM | 49.9V at 8.4A (10/1000μs) - clamped voltage seen by protected circuit during worst-case surge |
| PPPM | 400W - peak pulse power handling capability under standard surge waveform |
| IR @ VWM | <1μA - ensures negligible standby power loss and signal integrity in high-impedance circuits |
| TJ max | +150°C - enables operation in thermally constrained environments such as enclosed power supplies |
Pinout & Package
DO-214AC (SMA) surface-mount package: molded epoxy case with matte tin-plated leads, cathode indicated by band; weight ≈0.060g; UL 94V-0 flammability rating; polarity-sensitive for unidirectional operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry during forward conduction | Connected to lower-potential side (e.g., GND) in unidirectional TVS configuration |
| Cathode | Current exit during reverse-biased clamping | Connected to protected line (e.g., 36V rail); marked by band; conducts avalanche current to ground during overvoltage |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Ensures stable VBR tolerance and long-term reliability under repeated surge stress |
| Response time <1.0ps | Clamps transients before sensitive downstream components experience damaging voltage overshoot |
| ISO 7637-2 compliance (Pulse 1/2a/2b/3a/3b) | Validated for automotive-level load dump and inductive switching immunity in 12V/24V systems |
| Moisture sensitivity level 1 | Permits standard SMT reflow without pre-baking, reducing manufacturing complexity and cost |
Applications
| Switching Mode Power Supply (SMPS) | On-board DC/DC Converter |
|---|---|
Use Scenario: Input stage protection against line surges and coupling transients in AC/DC front-ends. IC Role / Device Role / Timing Role: Unidirectional TVS placed between input rail and ground to clamp positive-going spikes. Use Value: Limits voltage to ≤49.9V during 400W surges, preventing damage to bridge rectifiers and primary-side controllers. | Use Scenario: Protection of isolated or non-isolated buck/boost converter inputs in embedded systems. IC Role / Device Role / Timing Role: Standoff-rated TVS on VIN pin to absorb coupled noise from adjacent switching stages. Use Value: Maintains 30.8V working voltage margin while clamping fast transients before regulator ICs exceed absolute max ratings. |
| Lighting Application | Adapters |
Use Scenario: Surge protection in LED driver modules exposed to mains-borne transients or hot-plug events. IC Role / Device Role / Timing Role: Primary-side TVS on constant-current driver input to prevent MOSFET gate oxide failure. Use Value: Withstands repetitive 10/1000μs pulses up to 400W without degradation, supporting >100,000 surge cycles per JEDEC standards. | Use Scenario: Input-stage protection in wall-mounted AC/DC adapters for consumer electronics. IC Role / Device Role / Timing Role: Clamp device between secondary-side output rail and ground to suppress load-dump reflections. Use Value: Low 1μA leakage at 30.8V avoids battery drain in always-on adapter standby modes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ36A (Bourns) | Same DO-214AA package; 400W rating; VBR = 38.0–42.0V; VC = 58.1V @ 6.9A | Higher clamping voltage reduces protection margin for 36V systems | Select when board layout accommodates larger SMB footprint and higher VC is acceptable |
| 1.5SMC36A (ON Semiconductor) | DO-214AB package; 1500W rating; VBR = 38.0–42.0V; VC = 58.1V @ 25.8A | Higher power rating but larger footprint and higher VC limit use in space-constrained 36V rails | Prefer only where 1500W surge immunity is required and PCB area permits SMC outline |
Compared with SMBJ36A and 1.5SMC36A, the P4SMA36A offers tighter VBR tolerance (±5.3%), lower clamping voltage (49.9V vs ≥58.1V), and DO-214AC footprint compatibility with automated placement-making it optimal for compact, cost-sensitive 36V DC power interfaces requiring precise voltage limiting.
Availability
P4SMA36A is available at Aetrix Electronics and suitable for switching mode power supplies, on-board DC/DC converters, and lighting applications requiring stable component supply, consistent parametric performance, and full traceability across production lots.
Supply support for P4SMA36A 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, computing, and automotive markets.
The P4SMA36A belongs to TSC's P4SMAx series of surface-mount TVS diodes designed specifically for high-reliability, low-profile surge protection in space-constrained DC power interfaces up to 200V.
FAQ
What is the breakdown voltage range of the P4SMA36A?
The P4SMA36A has a guaranteed breakdown voltage (VBR) range of 34.2V to 37.8V at 1mA test current, measured per ANSI/IEEE C62.35. This tight ±5.3% tolerance ensures predictable clamping onset across production units and supports robust design margins in 36V nominal systems.
Is the P4SMA36A unidirectional or bidirectional?
The P4SMA36A is a unidirectional TVS diode, indicated by the absence of "C" or "CA" suffix and confirmed by cathode-band marking per DO-214AC mechanical drawing. It conducts only during reverse-biased overvoltage events and must be oriented with cathode toward the protected line.
What is the maximum clamping voltage of the P4SMA36A under surge conditions?
The P4SMA36A exhibits a maximum clamping voltage (VC) of 49.9V at 8.4A peak impulse current under the standardized 10/1000μs waveform. This value represents the highest voltage imposed on the protected circuit during worst-case transient events and is critical for verifying downstream component voltage ratings.
Does the P4SMA36A meet automotive surge immunity standards?
Yes, the P4SMA36A meets ISO 7637-2 Pulse 1, 2a, 2b, 3a, and 3b requirements for transient immunity in 12V and 24V automotive electrical systems. Its 400W peak power rating and fast <1.0ps response enable effective suppression of load-dump and inductive-switching transients.
What packaging and moisture sensitivity level does the P4SMA36A have?
The P4SMA36A is supplied in DO-214AC (SMA) package on 7,500-piece tape-and-reel, with Moisture Sensitivity Level 1 per J-STD-020-meaning it can be mounted using standard reflow profiles without preconditioning or dry-pack requirements.
P4SMA36A 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):
- 30.8V
- Voltage - Breakdown (Min):
- 34.2V
- Voltage - Clamping (Max) @ Ipp:
- 49.9V
- Current - Peak Pulse (10/1000µs):
- 8.4A
- 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)
P4SMA36A FAQ
1.How can I place an order for P4SMA36A through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA36A 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 P4SMA36A reliable?
The price and inventory of P4SMA36A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA36A is usually 5 days.
3.What payment methods are accepted for P4SMA36A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA36A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA36A?
P4SMA36A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA36A 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 P4SMA36A?
For technical support, including P4SMA36A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA36A requirements.
6.How does Aetrix verify that P4SMA36A is sourced from the original manufacturer or authorized distributors?
All P4SMA36A 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 P4SMA36A meets industry standards.
7.What is the process for return or replacement of P4SMA36A?
All P4SMA36A units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA36A, 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 P4SMA36A part is unused and in its original packaging.
Return procedure for P4SMA36A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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