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Taiwan Semiconductor Corporation P4SMA180CAH
- Part No.:
- P4SMA180CAH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA180CAH.pdf
- Description:
- TVS DIODE 154VWM 246VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:4,065
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Product details
Overview
P4SMA180CAH from Taiwan Semiconductor is a bidirectional 400W surface-mount transient voltage suppressor (TVS) diode in DO-214AC (SMA) package, with 162–198 V breakdown voltage (VBR), 154 V working stand-off voltage (VWM), and 246 V clamping voltage (VC) at 1.7 A peak impulse current - designed for automotive-grade surge protection in DC/DC converters and lighting systems.
For engineers reviewing the P4SMA180CAH datasheet, P4SMA180CAH pinout, P4SMA180CAH application, or P4SMA180CAH equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, ISO 7637-2 Pulse 1/2a/2b/3a/3b compliance, <1 µA leakage at VWM, and 1.0 ps typical response time under transient stress.
Technical Context
The P4SMA180CAH implements a glass-passivated silicon junction optimized for fast transient suppression in bidirectional signal and power lines. Its electrical behavior conforms to ANSI/IEEE C62.35 standards, with clamping defined by the 10/1000 µs double-exponential waveform and thermal derating per Fig.2 up to 150°C junction temperature.
It operates across –55°C to +150°C ambient range, supports automated SMT placement, and meets JESD201 Class 2 whisker resistance and J-STD-020 Moisture Sensitivity Level 1 - enabling use in high-reliability automotive and industrial PCB assemblies without pre-bake requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR min/max | 162 V / 198 V - ensures reliable triggering above system nominal voltage while maintaining margin against false clamping |
| VWM | 154 V - maximum continuous reverse voltage before significant leakage; sets upper limit for DC bus operation |
| VC @ IPPM | 246 V - clamped voltage during 1.7 A 10/1000 µs surge; defines worst-case overvoltage seen by protected circuitry |
| PPPM | 400 W - peak pulse power handling capacity; determines survivability under standardized ISO 7637-2 transients |
| IR @ VWM | <1 µA - ultra-low leakage preserves efficiency in high-impedance monitoring or standby circuits |
| TJ max | +150 °C - enables deployment in under-hood automotive environments and thermally constrained enclosures |
| Response time | <1.0 ps - sub-nanosecond reaction ensures suppression before sensitive downstream components experience overstress |
Pinout & Package
Package: DO-214AC (SMA), surface-mount, bi-directional configuration with cathode band omitted (bidirectional symmetry). Matte tin-plated leads, UL 94V-0 molding compound, 0.060 g mass.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bidirectional transient conduction path | No polarity marking required; identical clamping in both directions - simplifies layout and eliminates orientation errors |
| Case (body) | Thermal and mechanical interface | DO-214AC outline provides standardized pad footprint and thermal dissipation path to PCB copper |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive electronics per stress test requirements - supports qualification of end-systems without additional component-level testing |
| Glass passivated junction | Enhances long-term reliability and stability of VBR under thermal cycling and humidity exposure |
| ISO 7637-2 compliant | Withstands Pulse 1 (inductive load dump), Pulse 2a/2b (switching transients), and Pulse 3a/3b (capacitive coupling) - covers full vehicle ECU surge profile |
| Moisture Sensitivity Level 1 | Zero floor-life limitation; can be mounted directly from tape-and-reel without baking - reduces manufacturing overhead |
| Halogen-free & RoHS | Meets IEC 61249-2-21 and EU RoHS directives - supports green manufacturing and export compliance |
Applications
| Automotive Lighting Control | On-board DC/DC Converter Input |
|---|---|
Use Scenario: Protecting LED driver ICs and microcontrollers in headlamp modules subjected to load-dump transients during alternator regulation faults. IC Role / Device Role / Timing Role: Bidirectional TVS placed across input rails to clamp ±120 V spikes within 1.0 ps, limiting voltage seen by downstream regulators to ≤246 V. Use Value: Prevents latch-up or gate oxide damage in 3.3 V/5 V logic and buck controller ICs during ISO 7637-2 Pulse 5a events. | Use Scenario: Safeguarding 24 V-to-5 V isolated DC/DC converter inputs in ADAS domain controllers exposed to battery line noise and switching surges. IC Role / Device Role / Timing Role: Primary overvoltage clamp on primary-side input, absorbing 400 W pulses without degradation across –40°C to +125°C operating range. Use Value: Enables single-device protection meeting both ISO 7637-2 Pulse 1 and Pulse 2a requirements - eliminates need for multi-stage TVS arrays. |
| Industrial Power Adapter Output | Smart Building Sensor Node Power Rail |
Use Scenario: Securing 48 V output stage of DIN-rail mounted AC/DC adapters used in factory automation equipment. IC Role / Device Role / Timing Role: Secondary-side TVS suppressing coupled transients from relay switching and motor drive noise entering via shared power distribution bus. Use Value: Maintains <1 µA leakage at 48 V nominal, avoiding standby current penalty while delivering 246 V clamping under 1.7 A surge. | Use Scenario: Protecting low-power IoT sensor nodes powered from PoE-derived 24 V supplies in HVAC control panels subject to lightning-induced surges. IC Role / Device Role / Timing Role: Input rail protector rated for bidirectional 154 V stand-off and 246 V clamping - compatible with IEEE 802.3af/at surge immunity requirements. Use Value: Provides certified AEC-Q101 reliability in non-automotive infrastructure - extends field lifetime beyond 10 years under cyclic thermal stress. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ180CA | 600 W rating, SMB package (larger footprint), 250 V clamping at 2.4 A | Higher power handling but requires larger PCB area; not AEC-Q101 qualified | Select when higher surge margin is needed and automotive qualification is not required |
| 1.5SMC180CA | 1500 W rating, SMC package (3.5 mm × 7.0 mm), 274 V clamping at 5.5 A | Designed for industrial mains-level protection; significantly larger size and thermal mass | Choose only for legacy designs requiring 1.5 kW surge rating and existing SMC footprint |
Compared with SMBJ180CA and 1.5SMC180CA, the P4SMA180CAH delivers AEC-Q101 qualification and DO-214AC compactness at 400 W - making it optimal for space-constrained automotive modules where qualification and SMT compatibility are mandatory.
Availability
P4SMA180CAH is available at Aetrix Electronics and suitable for automotive lighting control, on-board DC/DC converter input protection, and industrial power adapter output stabilization requiring stable component supply across extended temperature and surge stress conditions.
Supply support for P4SMA180CAH 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, MOSFETs, and power management devices.
The P4SMA series belongs to TSC's AEC-Q101-qualified surface-mount TVS portfolio, engineered specifically for robust transient immunity in automotive power electronics and industrial control systems where reliability under ISO 7637-2 stress is critical.
FAQ
What is the clamping voltage of P4SMA180CAH under standard 10/1000 µs surge conditions?
The P4SMA180CAH has a maximum clamping voltage (VC) of 246 V when subjected to its rated peak pulse current of 1.7 A using the 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and guarantees that downstream circuitry will not experience voltages exceeding 246 V during standardized transient events - a critical parameter for protecting 24 V and 48 V automotive and industrial systems.
Is P4SMA180CAH suitable for bidirectional signal line protection?
Yes, P4SMA180CAH is explicitly designed for bidirectional operation, as indicated by the "CAH" suffix and confirmed in the datasheet's "Devices for Bipolar Applications" section. It provides symmetrical clamping in both polarities with identical VBR, VC, and leakage characteristics - making it appropriate for protecting differential buses, AC-coupled interfaces, or floating power domains where polarity reversal may occur.
Does P4SMA180CAH meet automotive qualification standards?
Yes, P4SMA180CAH is AEC-Q101 qualified and meets ISO 7637-2 Pulse 1, 2a, 2b, 3a, and 3b requirements. Its construction includes glass passivation, JESD201 Class 2 whisker resistance, and MSL Level 1 moisture sensitivity - all verified per automotive stress test protocols. This makes P4SMA180CAH suitable for engine control units, body electronics, and ADAS modules without additional qualification effort.
What is the maximum operating junction temperature for P4SMA180CAH?
The maximum operating junction temperature (TJ) for P4SMA180CAH is +150°C, with a storage temperature range of –55°C to +150°C. This rating allows deployment in under-hood automotive locations and high-temperature industrial enclosures. Thermal derating follows Fig.2 in the datasheet, reducing peak power linearly above 25°C ambient to maintain safe junction temperatures.
How does the leakage current of P4SMA180CAH compare to similar 180 V TVS diodes?
P4SMA180CAH specifies maximum reverse leakage current (IR) of less than 1 µA at its 154 V working stand-off voltage - matching or exceeding industry benchmarks for DO-214AC 180 V bidirectional TVS devices. This ultra-low leakage minimizes standby power loss and avoids false triggering in high-impedance sensing circuits, distinguishing it from alternatives with higher IR specs at comparable VWM.
P4SMA180CAH 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):
- 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)
P4SMA180CAH FAQ
1.How can I place an order for P4SMA180CAH through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA180CAH 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 P4SMA180CAH reliable?
The price and inventory of P4SMA180CAH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA180CAH is usually 5 days.
3.What payment methods are accepted for P4SMA180CAH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA180CAH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA180CAH?
P4SMA180CAH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA180CAH 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 P4SMA180CAH?
For technical support, including P4SMA180CAH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA180CAH requirements.
6.How does Aetrix verify that P4SMA180CAH is sourced from the original manufacturer or authorized distributors?
All P4SMA180CAH 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 P4SMA180CAH meets industry standards.
7.What is the process for return or replacement of P4SMA180CAH?
All P4SMA180CAH units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA180CAH, 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 P4SMA180CAH part is unused and in its original packaging.
Return procedure for P4SMA180CAH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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