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Taiwan Semiconductor Corporation P4SMA180AH
- Part No.:
- P4SMA180AH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA180AH.pdf
- Description:
- TVS DIODE 154VWM 246VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:3,115
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Product details
Overview
P4SMA180AH from Taiwan Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in DO-214AC (SMA) package, rated for 400W peak pulse power, 154V working stand-off voltage (VWM), and 246V maximum clamping voltage (VC) at 1.7A peak impulse current under 10/1000μs waveform-designed for overvoltage protection in automotive DC/DC converters and industrial power supplies.
For engineers reviewing the P4SMA180AH datasheet, P4SMA180AH pinout, P4SMA180AH application, or P4SMA180AH equivalent, key selection criteria include clamping performance at rated surge current, AEC-Q101 qualification for automotive environments, moisture sensitivity level (MSL 1), and compatibility with automated SMT placement on high-reliability PCBs.
Technical Context
The P4SMA180AH employs a glass-passivated silicon junction optimized for fast transient suppression, with sub-1ps response time and <1μA reverse leakage at VWM. Its unidirectional configuration provides polarity-specific protection with cathode-band marking, and it meets ISO 7637-2 Pulse 1/2a/2b/3a/3b for automotive load-dump and switching-spike immunity.
Thermal derating follows JESD22-A104 guidelines: maximum junction temperature is 150°C, with full 400W rating only at TA = 25°C and linear derating above that ambient-enabling robust operation in enclosed power modules where thermal management is constrained.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 154 V - Maximum continuous reverse operating voltage before clamping begins; defines safe DC/AC bias margin in protected circuit. |
| VBR min/max | 171 V / 189 V @ 1 mA - Breakdown voltage range ensures consistent turn-on across production lots and temperature. |
| VC @ IPPM | 246 V @ 1.7 A (10/1000μs) - Clamping voltage limits downstream component stress during standardized surge events. |
| PPPM | 400 W - Peak pulse power handling capability per single non-repetitive transient per JEDEC standards. |
| IR @ VWM | <1 μA - Ultra-low leakage preserves efficiency in high-impedance bias networks and battery-backed systems. |
| TJ max | 150 °C - Enables use in under-hood automotive modules and industrial SMPS with elevated ambient temperatures. |
Pinout & Package
DO-214AC (SMA) surface-mount package with matte tin-plated leads, UL 94V-0 molding compound, and cathode band marking for polarity identification. Weight: 0.060 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential side of protected line; conducts during forward surge or ESD event. |
| Cathode | Reverse-biased clamping terminal | Marked with band; connected to higher-potential rail; enters avalanche breakdown when VREV > VWM. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HAST, and mechanical shock per AEC standard. |
| Glass passivated junction | Enhances long-term stability and reduces parameter drift under humidity and thermal stress vs. epoxy-passivated alternatives. |
| Fast response time <1 ps | Clamps transients before sensitive ICs experience voltage overshoot-critical for protecting CAN/LIN bus receivers and MCU I/O. |
| Meets ISO 7637-2 Pulse 1/2a/2b/3a/3b | Guarantees compliance with OEM-level automotive electrical disturbance requirements without external filtering. |
Applications
| Automotive On-Board DC/DC Converter | Industrial Switching Mode Power Supply |
|---|---|
Use Scenario: Protects primary-side MOSFET gate drivers and secondary-side synchronous rectifiers from load-dump spikes and inductive kickback in 12V/24V vehicle DC/DC modules. IC Role / Device Role / Timing Role: Unidirectional TVS placed across input rails and across MOSFET drain-source to clamp voltage excursions within safe SOA limits. Use Value: Limits clamping voltage to 246 V at 1.7 A, preventing gate oxide rupture and ensuring >100,000-cycle surge endurance per ISO 7637-2. | Use Scenario: Shields control ICs (e.g., UC384x, LM5021) and optocoupler feedback paths in telecom and industrial AC/DC adapters against line surges and EFT bursts. IC Role / Device Role / Timing Role: Mounted at AC input stage and DC output terminals to absorb 400W transients without degradation over 10+ years of field operation. Use Value: Maintains <1 μA leakage at 154 V, minimizing standby power loss while delivering 246 V clamping under 10/1000μs surge conditions. |
| LED Driver Power Stage | Automotive Lighting Module |
Use Scenario: Safeguards constant-current LED driver ICs and high-side switches in outdoor signage and streetlight ballasts exposed to lightning-induced surges. IC Role / Device Role / Timing Role: Placed across bulk capacitor inputs and across LED string outputs to suppress both differential-mode and common-mode transients. Use Value: Withstands 400W pulses and operates up to 150°C ambient, enabling compact heatsink-free designs in sealed outdoor enclosures. | Use Scenario: Integrated into headlamp and fog lamp control units to meet OEM EMC requirements for transient immunity per LV-124 and GMW3172. IC Role / Device Role / Timing Role: Positioned at LIN bus interface and power input pins to protect microcontroller I/O and regulator inputs from battery reversal and jump-start spikes. Use Value: AEC-Q101 qualification and MSL 1 rating ensure zero reflow defects and stable clamping performance across -40°C to +125°C operating range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ180A | Same VWM (154 V), but 600W PPPM rating and DO-214AA (SMB) package; 2.5× larger footprint. | Higher power handling suits 48V telecom systems; not drop-in due to larger pad layout and 1.5 mm height increase. | Select SMBJ180A only if system requires >400W surge margin and board space allows SMB footprint. |
| 1.5SMC180A | Same VWM and VC, but 1500W PPPM and DO-214AB (SMC) package; 3× larger than SMA and 2× higher thermal mass. | Used in main AC input stages; incompatible with fine-pitch SMT lines due to 7.1 mm width and 2.5 mm height. | Choose 1.5SMC180A for front-end protection where PCB area is unconstrained and peak energy exceeds 400W. |
Compared with SMBJ180A and 1.5SMC180A, the P4SMA180AH delivers identical clamping performance in a space-constrained DO-214AC package ideal for dense automotive ECUs and portable industrial converters-without sacrificing AEC-Q101 compliance or MSL 1 manufacturability.
Availability
P4SMA180AH is available at Aetrix Electronics and suitable for automotive lighting modules, industrial switching mode power supplies, and on-board DC/DC converters requiring stable component supply with AEC-Q101 qualification and MSL 1 handling.
Supply support for P4SMA180AH 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 analog and discrete semiconductor manufacturer headquartered in Hsinchu, Taiwan, specializing in TVS diodes, rectifiers, and power MOSFETs for automotive and industrial markets.
The P4SMA180AH belongs to TSC's AEC-Q101-qualified P4SMA(A)H series-engineered specifically for high-reliability transient suppression in space-constrained automotive and industrial power systems where low leakage, fast response, and process consistency are critical.
FAQ
What is the maximum clamping voltage of the P4SMA180AH under standard test conditions?
The P4SMA180AH has a maximum clamping voltage (VC) of 246 V when subjected to a 10/1000 μs surge waveform at 1.7 A peak impulse current (IPPM), as specified in the official Taiwan Semiconductor datasheet revision A2102. This value ensures downstream components remain within safe operating voltage limits during standardized transient events.
Is the P4SMA180AH suitable for automotive applications?
Yes, the P4SMA180AH is AEC-Q101 qualified and meets ISO 7637-2 Pulse 1/2a/2b/3a/3b requirements, making it suitable for automotive applications including on-board DC/DC converters, lighting modules, and body control units. Its MSL 1 rating also supports lead-free reflow assembly in high-volume automotive manufacturing.
What is the working stand-off voltage (VWM) of the P4SMA180AH?
The P4SMA180AH has a working stand-off voltage (VWM) of 154 V, meaning it remains in high-impedance state up to this reverse voltage level before entering avalanche breakdown. This value is derived from the 10% tolerance below its minimum breakdown voltage (171 V) and ensures reliable operation in 130–150 V nominal systems.
Does the P4SMA180AH have bidirectional capability?
No, the P4SMA180AH is a unidirectional TVS diode, indicated by the absence of "CAH" suffix and presence of cathode band marking. For bidirectional protection in the same voltage range, Taiwan Semiconductor offers the P4SMA180CAH variant, which clamps symmetrically in both polarities.
What package type does the P4SMA180AH use, and what are its key mechanical features?
The P4SMA180AH uses the DO-214AC (SMA) surface-mount package with matte tin-plated leads compliant with J-STD-002 solderability, UL 94V-0 flammability rating, and JESD201 Class 2 whisker resistance. Its compact 4.5 mm × 2.7 mm footprint and 0.060 g weight support high-density PCB layouts and automated placement.
P4SMA180AH 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):
- 154V
- Voltage - Breakdown (Min):
- 171V
- Voltage - Clamping (Max) @ Ipp:
- 246V
- Current - Peak Pulse (10/1000µs):
- 1.7A
- 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)
P4SMA180AH FAQ
1.How can I place an order for P4SMA180AH through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA180AH 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 P4SMA180AH reliable?
The price and inventory of P4SMA180AH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA180AH is usually 5 days.
3.What payment methods are accepted for P4SMA180AH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA180AH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA180AH?
P4SMA180AH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA180AH 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 P4SMA180AH?
For technical support, including P4SMA180AH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA180AH requirements.
6.How does Aetrix verify that P4SMA180AH is sourced from the original manufacturer or authorized distributors?
All P4SMA180AH 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 P4SMA180AH meets industry standards.
7.What is the process for return or replacement of P4SMA180AH?
All P4SMA180AH units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA180AH, 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 P4SMA180AH part is unused and in its original packaging.
Return procedure for P4SMA180AH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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