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Taiwan Semiconductor Corporation P4SMA120CA
- Part No.:
- P4SMA120CA
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA120CA.pdf
- Description:
- TVS DIODE 102VWM 165VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:3,535
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Product details
Overview
P4SMA120CA from Taiwan Semiconductor is a bidirectional surface-mount transient voltage suppressor (TVS) diode designed for robust overvoltage protection in DC power rails and signal lines. It features a 108–132 V breakdown voltage (VBR), 97.2 V working stand-off voltage (VWM), 173 V maximum clamping voltage (VC) at 2.4 A peak pulse current, and 400 W peak pulse power rating under 10/1000 µs waveform - deployed in switching mode power supplies, on-board DC/DC converters, and automotive electronics.
For engineers reviewing the P4SMA120CA datasheet, P4SMA120CA pinout, P4SMA120CA application, or P4SMA120CA equivalent, key selection criteria include bidirectional clamping capability, DO-214AC (SMA) package compatibility, low leakage (<1 µA @ VWM), ISO 7637-2 Pulse 1/2a/2b/3a/3b compliance, and junction temperature range of –55°C to +150°C.
Technical Context
The P4SMA120CA implements a glass-passivated silicon avalanche junction optimized for fast transient suppression with sub-1 ps response time. Its bidirectional configuration enables symmetrical clamping in AC-coupled or floating circuits without polarity sensitivity.
It operates within a –55°C to +150°C junction temperature range and is rated for 400 W non-repetitive peak pulse power (10/1000 µs), derated linearly above 25°C ambient per Fig.2. The device meets JESD201 Class 2 whisker resistance and UL 94V-0 flammability requirements for its DO-214AC molding compound.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 97.2 V - Maximum continuous reverse operating voltage before significant leakage; defines safe DC rail margin for 100 V nominal systems. |
| VBR min/max | 108 V / 132 V @ 1 mA - Breakdown voltage tolerance band ensures predictable turn-on across production lots and temperature. |
| VC @ IPPM | 173 V @ 2.4 A (10/1000 µs) - Clamping voltage limits downstream component stress during surge events. |
| IR @ VWM | <1 µA - Ultra-low leakage preserves efficiency in high-impedance bias networks and battery-backed circuits. |
| PPK | 400 W - Peak pulse power handling capacity validated per IEC 61000-4-5 and ISO 7637-2 test waveforms. |
| TJ range | –55°C to +150°C - Enables deployment in under-hood automotive, industrial power, and outdoor-rated equipment. |
| Package | DO-214AC (SMA) - Standardized surface-mount footprint compatible with automated pick-and-place and reflow processes. |
Pinout & Package
DO-214AC (SMA) package: molded plastic case with coplanar matte tin-plated leads; cathode band marking denotes polarity for unidirectional variants - however, P4SMA120CA is bidirectional and lacks polarity marking per datasheet note "Electrical characteristics apply in both directions" and "C or CA suffix for bidirectional use".
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bidirectional avalanche junction terminals | No functional polarity; either terminal accepts reverse or forward surge - simplifies PCB layout and eliminates orientation errors during assembly. |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated chip junction | Ensures stable VBR and low leakage over lifetime, even under thermal cycling and humidity exposure. |
| Fast response time <1 ps | Clamps transients before sensitive downstream ICs experience overvoltage - critical for protecting CAN, LIN, and sensor interfaces. |
| ISO 7637-2 compliance (Pulse 1/2a/2b/3a/3b) | Validated for automotive load-dump and inductive-switching surge immunity without external filtering components. |
| Moisture sensitivity level 1 (J-STD-020) | Zero bake requirement prior to reflow; supports standard SMT assembly without moisture-related popcorning risk. |
| Halogen-free & RoHS compliant | Meets IEC 61249-2-21 and EU RoHS Directive 2011/65/EU for environmentally constrained applications. |
Applications
| Automotive Power Distribution | Industrial DC/DC Converters |
|---|---|
Use Scenario: Protection of 24 V and 48 V vehicle subsystems against load dump and alternator ripple. IC Role / Device Role / Timing Role: Bidirectional TVS placed across input rails of body control modules, lighting drivers, and infotainment power inputs. Use Value: Clamps 173 V surges while maintaining <1 µA leakage - avoids parasitic drain on always-on battery circuits. |
Use Scenario: Input-side surge suppression in isolated 12 V → 3.3 V buck-boost converters for PLC I/O modules. IC Role / Device Role / Timing Role: Primary overvoltage clamp upstream of primary-side controller ICs and EMI filters. Use Value: 400 W peak power rating absorbs repetitive 10/1000 µs transients common in factory floor power grids. |
| LED Driver Power Inputs | Telecom Power Feeds |
Use Scenario: Transient protection for constant-current LED drivers in streetlight and tunnel lighting systems. IC Role / Device Role / Timing Role: Standoff-rated TVS across bulk capacitor inputs exposed to lightning-induced surges on long outdoor wiring runs. Use Value: 97.2 V VWM allows operation with 100 V nominal DC bus while clamping to 173 V - preserving driver MOSFET SOA. |
Use Scenario: Secondary-side protection on -48 V telecom power feeds feeding remote radio units (RRUs). IC Role / Device Role / Timing Role: Bidirectional clamp on DC feed lines subject to induced surges from nearby RF transmitters and grounding faults. Use Value: Symmetrical clamping eliminates need for dual unidirectional devices - reduces BOM count and board area by 50%. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ120CA (Bourns) | Same VWM (97.2 V), higher IPPM (2.7 A), larger SMB package (DO-214AA) | Requires PCB pad redesign; better suited for higher-energy surges where space permits. | Select when 400 W rating is insufficient and layout allows DO-214AA footprint. |
| 1.5KE120CA (ON Semiconductor) | Through-hole TO-204AA (DO-41); same VBR/VC specs but 1.5 kW rating and 5x larger size | Not surface-mountable; used in legacy or high-reliability through-hole designs only. | Choose only for manual assembly, repair, or where mechanical robustness outweighs SMT automation needs. |
Compared with SMBJ120CA and 1.5KE120CA, the P4SMA120CA delivers identical electrical protection performance in the smallest standardized SMT package (DO-214AC), enabling high-density layouts without sacrificing ISO 7637-2 compliance or thermal derating margin.
Availability
P4SMA120CA is available at Aetrix Electronics and suitable for automotive power distribution, industrial DC/DC converters, and LED driver power inputs requiring stable component supply, full traceability, and lifecycle continuity.
Supply support for P4SMA120CA 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 - headquartered in Hsinchu Science Park, Taiwan.
The P4SMA120CA belongs to TSC's P4SMAxx(A) family of 400 W surface-mount TVS diodes engineered for automotive-grade transient immunity, industrial power reliability, and high-volume SMT manufacturability.
FAQ
What does the 'CA' suffix indicate in P4SMA120CA?
The 'CA' suffix in P4SMA120CA denotes a bidirectional configuration - meaning the device provides symmetrical transient voltage clamping in both polarities. Unlike unidirectional variants (e.g., P4SMA120A), the P4SMA120CA has no anode/cathode distinction and functions identically regardless of voltage polarity applied across its terminals. This is confirmed in the datasheet's "Devices for Bipolar Applications" section and electrical specifications table.
Does P4SMA120CA meet automotive surge immunity standards?
Yes, the P4SMA120CA meets ISO 7637-2 Pulse 1, 2a, 2b, 3a, and 3b test requirements - explicitly stated in the Features list. Its 173 V clamping voltage at 2.4 A and 400 W peak pulse rating ensure compliance with load-dump and inductive-switching surge profiles typical in 12 V and 24 V vehicle electrical systems.
What is the maximum junction temperature for P4SMA120CA?
The P4SMA120CA has a maximum junction temperature (TJMAX) of +150°C, with an operating junction temperature range of –55°C to +150°C. This rating is specified in the Absolute Maximum Ratings table and supports reliable operation in under-hood automotive environments and industrial enclosures without forced cooling.
Is P4SMA120CA halogen-free and RoHS compliant?
Yes, the P4SMA120CA is halogen-free per IEC 61249-2-21 and RoHS compliant per EU Directive 2011/65/EU. These environmental qualifications are explicitly listed in the Features section and verified via material declarations aligned with TSC's manufacturing standards.
What is the leakage current specification for P4SMA120CA at its working voltage?
The P4SMA120CA exhibits a maximum reverse leakage current (IR) of <1 µA at its working stand-off voltage (VWM) of 97.2 V, measured at 25°C. This ultra-low leakage is critical for preserving efficiency in high-impedance sensing circuits and battery-powered systems where standby current must be minimized.
P4SMA120CA 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):
- 102V
- Voltage - Breakdown (Min):
- 114V
- Voltage - Clamping (Max) @ Ipp:
- 165V
- Current - Peak Pulse (10/1000µs):
- 2.5A
- 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)
P4SMA120CA FAQ
1.How can I place an order for P4SMA120CA through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA120CA 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 P4SMA120CA reliable?
The price and inventory of P4SMA120CA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA120CA is usually 5 days.
3.What payment methods are accepted for P4SMA120CA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA120CA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA120CA?
P4SMA120CA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA120CA 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 P4SMA120CA?
For technical support, including P4SMA120CA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA120CA requirements.
6.How does Aetrix verify that P4SMA120CA is sourced from the original manufacturer or authorized distributors?
All P4SMA120CA 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 P4SMA120CA meets industry standards.
7.What is the process for return or replacement of P4SMA120CA?
All P4SMA120CA units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA120CA, 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 P4SMA120CA part is unused and in its original packaging.
Return procedure for P4SMA120CA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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