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Taiwan Semiconductor Corporation P4SMA10AH
- Part No.:
- P4SMA10AH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA10AH.pdf
- Description:
- TVS DIODE 8.55VWM 14.5VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:6,987
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Product details
Overview
P4SMA10AH from Taiwan Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in DO-214AC (SMA) package, rated for 400W peak pulse power, 9.5–10.5V breakdown voltage at 1mA, and 14.5V clamping voltage at 29A (10/1000μs waveform), used to protect DC/DC converters and automotive power rails against ESD and surge events.
For engineers reviewing the P4SMA10AH datasheet, P4SMA10AH pinout, P4SMA10AH application, or P4SMA10AH equivalent, key selection criteria include its AEC-Q101 qualification, 8.55V working stand-off voltage, <10μA reverse leakage at VWM, ISO 7637-2 Pulse 1/2a/2b/3a/3b compliance, and DO-214AC mechanical compatibility with automated SMT assembly.
Technical Context
The P4SMA10AH employs a glass-passivated silicon junction optimized for fast transient suppression, with sub-1ps response time and low clamping ratio (VC/VBR ≈ 1.45). Its unidirectional configuration provides asymmetric protection-low forward voltage (3.5V @ 25A) enables use in series with power paths while blocking reverse surge energy.
Designed for automotive-grade reliability, it operates across –55°C to +150°C junction temperature, meets JESD201 Class 2 whisker resistance, and is rated MSL Level 1 per J-STD-020-enabling reflow without moisture-related failure risk.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR min/max | 9.50 V / 10.50 V at IT = 1 mA - defines precise overvoltage triggering threshold for 12V rail protection |
| VWM | 8.55 V - maximum continuous reverse voltage before significant leakage; sets safe operating margin below system nominal |
| IR @ VWM | <10 μA - ensures negligible standby current drain in always-on automotive modules |
| VC @ IPPM | 14.5 V at 29 A (10/1000μs) - limits protected circuit voltage during worst-case surge, preserving downstream ICs |
| PPPM | 400 W - peak pulse power handling capability compliant with ISO 7637-2 Pulse 5a (load dump) |
| TJ max | +150 °C - supports under-hood placement in engine control units and body electronics |
| Package | DO-214AC (SMA) - industry-standard SMT footprint compatible with high-volume pick-and-place and reflow processes |
Pinout & Package
DO-214AC (SMA) package: molded plastic case with matte tin-plated leads, cathode band marking polarity; weight ≈ 0.060 g; UL 94V-0 rated compound.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Input side of unidirectional TVS path | Connected to protected line (e.g., 12V supply rail); conducts surge current toward ground when reverse-biased beyond VBR |
| Cathode | Output/ground reference terminal | Connected to system ground plane; establishes clamping reference and enables low-inductance return path for transient energy |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control, infotainment, and ADAS modules per stress test requirements |
| Glass passivated junction | Enhances long-term stability and reduces parameter drift under thermal cycling and humidity exposure |
| Fast response time <1 ps | Clamps ESD transients (IEC 61000-4-2) before sensitive logic or analog circuitry sustains damage |
| ISO 7637-2 compliance | Withstands standardized automotive electrical transients (Pulse 1, 2a, 2b, 3a, 3b) without degradation |
| MSL Level 1 | Zero bake requirement prior to reflow soldering-reduces manufacturing cost and process complexity |
Applications
| Automotive Body Control Module (BCM) | On-board DC/DC Converter |
|---|---|
Use Scenario: Protects LIN bus interface and power inputs in BCMs exposed to load dump and jump-start surges. IC Role / Device Role / Timing Role: Unidirectional TVS placed between 12V input and ground, clamping transients within 14.5V to preserve MCU and transceiver operation. Use Value: Prevents latch-up or permanent damage to 5V/3.3V LDOs and CAN/LIN transceivers during ISO 7637-2 Pulse 5a events. | Use Scenario: Shields primary-side MOSFET gate drivers and secondary-side feedback circuits in 12V-to-5V isolated DC/DC converters. IC Role / Device Role / Timing Role: Mounted across input capacitor terminals to absorb switching noise and external surge coupling into regulation loop. Use Value: Maintains output regulation integrity by limiting input rail excursion to ≤14.5V during 400W transient events. |
| LED Lighting Driver | Industrial Power Adapter |
Use Scenario: Safeguards constant-current LED driver ICs in automotive headlamp modules subjected to battery reversal and cranking dips. IC Role / Device Role / Timing Role: Positioned at driver IC VDD pin to clamp negative transients and limit positive overshoot during PWM dimming transitions. Use Value: Enables reliable operation at 8.55V working voltage while surviving >1000 cycles of 100V reverse polarity per ISO 7637-2 Pulse 2b. | Use Scenario: Secures AC/DC adapter output stage against lightning-induced surges on 24V industrial control lines. IC Role / Device Role / Timing Role: Placed across output capacitor to suppress common-mode transients entering via field wiring or shared ground returns. Use Value: Limits clamped voltage to 14.5V-well below 16V absolute maximum rating of typical 24V-rated op-amps and ADC references. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ10A | 600W rating, DO-214AA (SMB) package, 10.0–11.1V VBR, 17.0V VC @ 35A | Higher power handling but larger footprint; less suitable for space-constrained automotive PCBs | Select SMBJ10A only if system-level surge testing exceeds 400W or layout allows SMB pad area |
| 1.5SMC10A | 1500W rating, DO-214AB (SMC) package, 10.0–11.1V VBR, 17.0V VC @ 88A | Over-specified for most 12V systems; requires larger board area and higher cost | Choose 1.5SMC10A only for heavy-duty industrial equipment requiring multi-kW surge immunity |
Compared with SMBJ10A and 1.5SMC10A, the P4SMA10AH delivers optimal balance of AEC-Q101 compliance, 400W surge capacity, and DO-214AC footprint-making it ideal for compact, automotive-qualified 12V rail protection where thermal and spatial constraints dominate.
Availability
P4SMA10AH is available at Aetrix Electronics and suitable for automotive body electronics, on-board DC/DC converters, and industrial power adapters requiring stable component supply with full traceability and lifecycle support.
Supply support for P4SMA10AH 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 with global distribution and AEC-Q101 validation capabilities.
The P4SMA10AH belongs to TSC's P4SMAx(A)H family of automotive-grade surface-mount TVS diodes, engineered specifically for robust transient suppression in 12V and 24V vehicle electrical systems.
FAQ
What is the breakdown voltage range of the P4SMA10AH?
The P4SMA10AH has a guaranteed breakdown voltage range of 9.50 V to 10.50 V at a test current of 1.0 mA, measured per ANSI/IEEE C62.35 standards. This tight VBR tolerance ensures consistent clamping behavior across production lots and supports precise overvoltage protection design for 12V automotive systems. The P4SMA10AH's specified range reflects its "A" variant designation, indicating tighter parametric control than standard P4SMA10H.
Is the P4SMA10AH suitable for bidirectional transient protection?
No, the P4SMA10AH is a unidirectional TVS diode and is not rated for bidirectional operation. For bidirectional protection in the same voltage class, Taiwan Semiconductor specifies parts with "CH" or "CAH" suffixes (e.g., P4SMA10CH). Using the P4SMA10AH in reverse-biased configurations beyond its specified VWM may result in premature failure or undefined clamping performance.
Does the P4SMA10AH meet automotive qualification standards?
Yes, the P4SMA10AH is AEC-Q101 qualified and meets ISO 7637-2 Pulse 1, 2a, 2b, 3a, and 3b transient immunity requirements. It also complies with JESD201 Class 2 whisker resistance and J-STD-020 MSL Level 1-confirming suitability for automotive under-hood and cabin applications without preconditioning.
What is the maximum clamping voltage of the P4SMA10AH under surge conditions?
The P4SMA10AH has a maximum clamping voltage (VC) of 14.5 V at a peak pulse current (IPPM) of 29 A with a 10/1000 μs waveform. This value is measured under standardized surge conditions and defines the upper voltage limit imposed on protected circuitry during transient events-critical for ensuring downstream components remain within their absolute maximum ratings.
Can the P4SMA10AH be used in lead-free reflow processes?
Yes, the P4SMA10AH features matte tin-plated leads and is rated MSL Level 1 per J-STD-020, meaning it can be subjected to standard lead-free reflow profiles (e.g., JEDEC J-STD-020 Rev D, peak 260°C) without baking or special handling. Its UL 94V-0 molding compound and thermal stability up to +150°C junction temperature further support robust manufacturability.
P4SMA10AH 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):
- 8.55V
- Voltage - Breakdown (Min):
- 9.5V
- Voltage - Clamping (Max) @ Ipp:
- 14.5V
- Current - Peak Pulse (10/1000µs):
- 29A
- 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)
P4SMA10AH FAQ
1.How can I place an order for P4SMA10AH through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA10AH 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 P4SMA10AH reliable?
The price and inventory of P4SMA10AH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA10AH is usually 5 days.
3.What payment methods are accepted for P4SMA10AH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA10AH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA10AH?
P4SMA10AH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA10AH 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 P4SMA10AH?
For technical support, including P4SMA10AH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA10AH requirements.
6.How does Aetrix verify that P4SMA10AH is sourced from the original manufacturer or authorized distributors?
All P4SMA10AH 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 P4SMA10AH meets industry standards.
7.What is the process for return or replacement of P4SMA10AH?
All P4SMA10AH units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA10AH, 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 P4SMA10AH part is unused and in its original packaging.
Return procedure for P4SMA10AH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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