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Taiwan Semiconductor Corporation P4SMA180H
- Part No.:
- P4SMA180H
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA180H.pdf
- Description:
- 400W, 180V, 10%, UNIDIRECTIONAL,
- Quantity:
- Payment:
- Shipping:
Inventory:7,619
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Product details
Overview
P4SMA180H from Taiwan Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode designed for overvoltage protection in DC power rails and signal lines. It features a 146 V working stand-off voltage (VWM), 162–198 V breakdown voltage (VBR), 258 V maximum clamping voltage (VC) at 1.6 A peak pulse current, and 400 W peak pulse power rating per 10/1000 µs waveform - deployed in automotive-grade SMPS, on-board DC/DC converters, and lighting drivers.
For engineers reviewing the P4SMA180H datasheet, P4SMA180H pinout, P4SMA180H application, or P4SMA180H equivalent, this device delivers AEC-Q101 qualification, ISO 7637-2 Pulse 1/2a/2b/3a/3b compliance, sub-1 ps response time, <1 µA reverse leakage at VWM, and DO-214AC (SMA) package compatibility with automated SMT assembly.
Technical Context
The P4SMA180H operates as a unidirectional avalanche diode, leveraging glass-passivated junction technology to achieve precise voltage clamping during transient events. Its electrical behavior follows ANSI/IEEE C62.35 standards, with breakdown tested at 1.0 mA and clamping verified under standardized 10/1000 µs surge waveforms.
Thermal performance is rated for -55°C to +150°C operating junction temperature, with derating applied above 25°C ambient per Fig.2. The device exhibits a 0.108 %/°C temperature coefficient of VBR, ensuring stable threshold behavior across automotive and industrial temperature ranges.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 146 V - Maximum continuous reverse voltage before significant leakage; defines safe operating DC rail margin. |
| VBR min/max | 162–198 V @ 1.0 mA - Verified avalanche onset range; ensures consistent turn-on across production lots. |
| VC @ IPPM | 258 V @ 1.6 A - Clamped voltage during 10/1000 µs surge; determines protected circuit's maximum stress level. |
| PPPM | 400 W - Peak pulse power handling per single non-repetitive event; supports robust ISO 7637-2 compliance. |
| IR @ VWM | <1 µA - Ultra-low reverse leakage; minimizes standby power loss in high-impedance monitoring circuits. |
| Response time | <1.0 ps - Sub-picosecond junction response enables protection of fast-edge digital and analog signals. |
| TJ max | +150 °C - Extended junction temperature rating enables use in under-hood automotive and high-power LED driver environments. |
Pinout & Package
Package: DO-214AC (SMA), surface-mount, single-diode configuration with cathode band marking. Molding compound meets UL 94V-0; matte tin-plated leads comply with J-STD-002 solderability and JESD 201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential side (e.g., GND or return path) in unidirectional clamp configuration. |
| Cathode | Reverse-biased clamping terminal | Connected to protected line (e.g., 12 V rail); conducts avalanche current during overvoltage transients. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive electronics per stress test requirements including HTOL, TCT, and ESD-HBM/MM. |
| Glass passivated junction | Enhances long-term reliability and moisture resistance vs. epoxy-passivated alternatives; critical for humid environments. |
| ISO 7637-2 compliance | Withstands Pulse 1 (inductive load dump), Pulse 2a/2b (switching transients), and Pulse 3a/3b (capacitive coupling) without degradation. |
| Moisture sensitivity level 1 | Zero bake requirement prior to reflow; compatible with standard SMT assembly lines without dry-pack handling. |
| RoHS & halogen-free | Meets IEC 61249-2-21 and EU RoHS Directive 2011/65/EU; suitable for green manufacturing and export compliance. |
Applications
| Automotive Power Supply Protection | LED Driver Overvoltage Clamp |
|---|---|
Use Scenario: Protecting 12 V/24 V battery-fed ECUs against load dump and alternator transients in passenger vehicles. IC Role / Device Role / Timing Role: Unidirectional TVS diode placed across input rail to clamp surges >100 V before they reach DC/DC controllers or microcontrollers. Use Value: Limits peak rail voltage to ≤258 V during ISO 7637-2 Pulse 5a events, preventing latch-up or permanent damage to downstream ICs. | Use Scenario: Safeguarding constant-current LED drivers in streetlight and headlamp modules from switching spikes and ESD. IC Role / Device Role / Timing Role: Parallel-connected transient suppressor on output side to absorb inductive kickback from MOSFET switches and relay coils. Use Value: Clamps transients within 1 ps, preserving LED string integrity and avoiding false fault triggering in feedback sensing circuits. |
| Industrial DC/DC Converter Input | AC-DC Adapter Surge Suppression |
Use Scenario: Input-stage protection for isolated 48 V telecom DC/DC modules exposed to lightning-induced surges on PoE or backplane rails. IC Role / Device Role / Timing Role: First-line defense at converter input, shunting energy before primary-side controller and transformer. Use Value: Handles 400 W peak pulse without degradation, enabling compliance with IEC 61000-4-5 Level 3 (1 kV/2 kV) when combined with upstream filtering. | Use Scenario: Secondary-side transient suppression in universal-input AC-DC adapters for consumer and medical devices. IC Role / Device Role / Timing Role: Unidirectional clamp on regulated 5 V/12 V outputs to prevent overvoltage propagation to connected peripherals. Use Value: Maintains <1 µA leakage at 146 V, eliminating standby current penalty while providing 258 V clamping for EN 61000-4-4 EFT immunity. |
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 | DO-214AA (SMB) package; 180 V VWM; 200 V VBR min; 291 V VC @ 1.37 A; same 400 W rating. | Larger footprint (SMB vs SMA); higher clamping voltage increases protected circuit stress. | Select SMBJ180A only if board layout accommodates larger pad area and higher VC is acceptable. |
| 1.5SMC180A | DO-214AB (SMC) package; 180 V VWM; 200 V VBR min; 292 V VC @ 1.37 A; 1500 W rating (not directly comparable). | Higher power rating but physically incompatible; requires PCB redesign and thermal reassessment. | Choose 1.5SMC180A only for systems requiring >400 W surge handling and space for SMC footprint. |
Compared with SMBJ180A and 1.5SMC180A, the P4SMA180H offers identical voltage ratings and power dissipation in the smallest DO-214AC (SMA) form factor, enabling higher board density and lower parasitic inductance for faster transient response - critical in compact automotive and LED modules.
Availability
P4SMA180H is available at Aetrix Electronics and suitable for automotive power supply protection, LED driver overvoltage clamp, and industrial DC/DC converter input applications requiring stable component supply, AEC-Q101 qualification, and ISO 7637-2 compliance.
Supply support for P4SMA180H 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 P4SMA series is part of TSC's automotive-qualified transient suppression portfolio, engineered specifically for robustness in harsh environments including engine control units, body electronics, and lighting systems.
FAQ
What is the polarity configuration of the P4SMA180H?
The P4SMA180H is a unidirectional TVS diode, with anode and cathode terminals clearly marked by a cathode band on the DO-214AC (SMA) package. It conducts in forward bias and clamps transients in reverse bias - unlike bidirectional variants (e.g., P4SMA180AH) which protect both polarities without polarity dependence.
Does the P4SMA180H meet automotive qualification standards?
Yes, the P4SMA180H is AEC-Q101 qualified and explicitly tested per ISO 7637-2 Pulse 1, 2a, 2b, 3a, and 3b waveforms. Its glass-passivated junction, MSL Level 1 rating, and -55°C to +150°C operating range confirm suitability for under-hood and chassis-mounted automotive applications.
What is the maximum clamping voltage of the P4SMA180H under surge conditions?
The P4SMA180H has a maximum clamping voltage (VC) of 258 V when subjected to its rated peak pulse current of 1.6 A using the standardized 10/1000 µs waveform. This value is guaranteed across production lots and forms the basis for protected circuit voltage margining.
Can the P4SMA180H be used in bidirectional protection circuits?
No - the P4SMA180H is unidirectional only. For bidirectional transient suppression, the P4SMA180AH variant must be used. Using P4SMA180H in reverse-biased AC or floating-signal applications risks permanent failure due to lack of symmetrical breakdown capability.
What packaging and reel quantity is offered for the P4SMA180H?
The P4SMA180H is supplied in DO-214AC (SMA) package format on tape-and-reel, with 7,500 units per reel. This configuration supports high-speed pick-and-place assembly and complies with J-STD-002 solderability and JESD 201 Class 2 whisker resistance requirements.
P4SMA180H 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):
- 146V
- Voltage - Breakdown (Min):
- 162V
- Voltage - Clamping (Max) @ Ipp:
- 258V
- Current - Peak Pulse (10/1000µs):
- 1.6A
- 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)
P4SMA180H FAQ
1.How can I place an order for P4SMA180H through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA180H 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 P4SMA180H reliable?
The price and inventory of P4SMA180H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA180H is usually 5 days.
3.What payment methods are accepted for P4SMA180H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA180H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA180H?
P4SMA180H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA180H 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 P4SMA180H?
For technical support, including P4SMA180H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA180H requirements.
6.How does Aetrix verify that P4SMA180H is sourced from the original manufacturer or authorized distributors?
All P4SMA180H 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 P4SMA180H meets industry standards.
7.What is the process for return or replacement of P4SMA180H?
All P4SMA180H units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA180H, 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 P4SMA180H part is unused and in its original packaging.
Return procedure for P4SMA180H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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