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Taiwan Semiconductor Corporation P4SMA56C
- Part No.:
- P4SMA56C
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA56C.pdf
- Description:
- 400W, 56V, 10%, BIDIRECTIONAL, T
- Quantity:
- Payment:
- Shipping:
Inventory:2,223
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Product details
Overview
P4SMA56C 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 56 V breakdown voltage (VBR = 50.4–61.6 V), 400 W peak pulse power rating (10/1000 µs), and clamps transients to ≤80.5 V at 5.2 A, making it suitable for automotive power supply inputs and industrial DC/DC converter protection.
For engineers reviewing the P4SMA56C datasheet, P4SMA56C pinout, P4SMA56C application, or P4SMA56C equivalent, key selection criteria include its bidirectional configuration, DO-214AC (SMA) package compatibility with automated placement, ISO 7637-2 Pulse 1/2a/2b/3a/3b compliance, and low leakage (<1 µA at VWM = 45.4 V).
Technical Context
The P4SMA56C operates as a silicon avalanche diode with glass-passivated junction, enabling fast response (<1.0 ps) and stable clamping under repetitive surge events. Its bidirectional structure supports symmetrical transient suppression in AC-coupled or floating systems without polarity constraints.
It is rated for 150 °C maximum junction temperature and meets J-STD-020 moisture sensitivity level 1, ensuring reliability in reflow-soldered high-volume production. The device complies with ANSI/IEEE C62.35 for surge testing and exhibits a VBR temperature coefficient of 0.103 %/°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 50.4 V / 61.6 V at IT = 1.0 mA - defines guaranteed avalanche onset range for reliable overvoltage triggering |
| VWM | 45.4 V - maximum continuous reverse operating voltage before significant leakage begins |
| VC @ IPPM | 80.5 V at 5.2 A (10/1000 µs) - clamping voltage limiting downstream circuit stress during surge |
| PPPM | 400 W - peak pulse power handling capacity per single transient event |
| IR @ VWM | <1 µA - ensures minimal standby power loss and signal integrity in high-impedance circuits |
| Package | DO-214AC (SMA) - industry-standard surface-mount outline compatible with IPC-7351B land patterns |
| Configuration | Bidirectional - enables symmetric protection on AC lines or ungrounded DC buses without polarity concerns |
Pinout & Package
DO-214AC (SMA) package: molded plastic case with matte tin-plated leads, UL 94V-0 rated compound, cathode band marking for unidirectional variants; P4SMA56C is bidirectional and marked with "CHJ" code - no polarity band required.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Transient conduction path | Both terminals function identically - bidirectional clamping allows connection across any two points needing surge isolation |
| Case | Non-electrical mechanical interface | No internal thermal or electrical connection - mounting pad serves only for mechanical anchoring and heat dissipation |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Enables stable, repeatable avalanche characteristics and long-term reliability under thermal cycling |
| ISO 7637-2 compliance (Pulse 1/2a/2b/3a/3b) | Validated for automotive load-dump and inductive-switching immunity without external filtering |
| Fast response time <1.0 ps | Clamps transients before sensitive ICs experience damaging voltage overshoot |
| J-STD-020 Level 1 moisture sensitivity | Eliminates bake requirements prior to reflow, reducing manufacturing cost and process complexity |
| RoHS and halogen-free (IEC 61249-2-21) | Meets global environmental regulations for consumer, industrial, and automotive end equipment |
Applications
| Automotive Power Input Protection | Industrial DC/DC Converter Input |
|---|---|
Use Scenario: Protecting 12 V/24 V vehicle electronics against load dump and alternator transients. IC Role / Device Role / Timing Role: Bidirectional TVS diode placed across main power rail upstream of DC/DC regulator. Use Value: Clamps 100 V+ surges to ≤80.5 V within picoseconds, preventing damage to buck controller ICs and MOSFETs. | Use Scenario: Safeguarding isolated DC/DC modules in programmable logic controllers (PLCs) and motor drives. IC Role / Device Role / Timing Role: Primary-side transient suppressor on input bus before EMI filter and primary switch. Use Value: Absorbs 400 W surges without degradation, maintaining system uptime in electrically noisy factory environments. |
| LED Driver Power Stage | Telecom DC Power Interface |
Use Scenario: Overvoltage protection for constant-current LED drivers used in street lighting and signage. IC Role / Device Role / Timing Role: Parallel-connected TVS on 48 V input bus to suppress switching noise and lightning-induced spikes. Use Value: Low leakage (<1 µA) avoids current diversion from LED strings; DO-214AC footprint fits compact driver PCB layouts. | Use Scenario: Surge protection on -48 V telecom power feeds entering base station equipment. IC Role / Device Role / Timing Role: Bidirectional clamp on DC input line to meet GR-1089-CORE Level 3 surge immunity requirements. Use Value: Symmetric clamping ensures equal protection during positive/negative polarity surges common in telecom infrastructure. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ58CA (Bourns) | Same DO-214AA package; 58 V VBR, 600 W PPPM, higher clamping (93.6 V @ 6.4 A) | Higher power rating but larger voltage margin - better for less tightly regulated rails | Select SMBJ58CA when system-level surge energy exceeds 400 W or when layout allows DO-214AA footprint |
| 1.5KE56CA (ON Semiconductor) | Through-hole DO-15 package; same 56 V rating, 1500 W PPPM, higher clamping (93.6 V @ 16 A) | Not SMT-compatible - requires manual assembly or wave soldering; suited for prototyping or low-volume legacy designs | Choose 1.5KE56CA only if through-hole mounting is mandated or if higher single-pulse energy absorption is critical |
Compared with SMBJ58CA and 1.5KE56CA, the P4SMA56C offers optimal balance of SMT manufacturability, 400 W surge capability, and tight 45.4 V working voltage - ideal for space-constrained automotive and industrial DC power interfaces where DO-214AC is standard.
Availability
P4SMA56C is available at Aetrix Electronics and suitable for automotive power input protection, industrial DC/DC converter input stages, and LED driver power stage applications requiring stable component supply and full traceability.
Supply support for P4SMA56C 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.
The P4SMA series belongs to TSC's surface-mount transient voltage suppressor product line, engineered specifically for high-reliability, high-volume automotive and industrial power rail protection with stringent AEC-Q200 alignment and ISO 7637-2 validation.
FAQ
What is the breakdown voltage range of the P4SMA56C?
The P4SMA56C has a specified breakdown voltage (VBR) range of 50.4 V to 61.6 V at IT = 1.0 mA, measured per ANSI/IEEE C62.35. This range ensures consistent avalanche initiation across production lots and temperature extremes, and is confirmed in Taiwan Semiconductor's S2102 datasheet revision. The P4SMA56C maintains this specification under standard test conditions (TA = 25 °C).
Is the P4SMA56C unidirectional or bidirectional?
The P4SMA56C is a bidirectional TVS diode, indicated by the "C" suffix per Taiwan Semiconductor's ordering convention. Unlike unidirectional variants (e.g., P4SMA56A), it provides symmetrical clamping in both polarities - essential for protecting AC-coupled signals or floating DC buses. The P4SMA56C does not feature a cathode band marking, confirming its bidirectional construction.
What is the maximum clamping voltage of the P4SMA56C during a surge event?
The P4SMA56C clamps to a maximum of 80.5 V at IPPM = 5.2 A under the standardized 10/1000 µs double-exponential surge waveform. This value is measured at TA = 25 °C and defines the upper voltage limit imposed on protected circuitry during transient events. The P4SMA56C achieves this performance while maintaining low leakage and fast response, critical for safeguarding downstream components.
Does the P4SMA56C comply with automotive surge standards?
Yes, the P4SMA56C meets ISO 7637-2 requirements for Pulse 1, 2a, 2b, 3a, and 3b, validating its suitability for 12 V and 24 V automotive power networks. This compliance is explicitly stated in the "Features" section of the official datasheet (Version S2102). The P4SMA56C's 400 W rating, fast response, and bidirectional operation make it appropriate for ECU, infotainment, and body control module protection.
What is the package type and moisture sensitivity level of the P4SMA56C?
The P4SMA56C uses the DO-214AC (SMA) surface-mount package with matte tin-plated leads and UL 94V-0 molding compound. Its moisture sensitivity level is J-STD-020 Level 1, meaning it can be stored indefinitely at ambient conditions and placed directly into reflow without baking. This characteristic simplifies manufacturing logistics and reduces risk of popcorning during assembly - a key advantage of the P4SMA56C in high-volume SMT lines.
P4SMA56C 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):
- 45.4V
- Voltage - Breakdown (Min):
- 50.4V
- Voltage - Clamping (Max) @ Ipp:
- 80.5V
- Current - Peak Pulse (10/1000µs):
- 5.2A
- 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)
P4SMA56C FAQ
1.How can I place an order for P4SMA56C through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA56C 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 P4SMA56C reliable?
The price and inventory of P4SMA56C are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA56C is usually 5 days.
3.What payment methods are accepted for P4SMA56C?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA56C transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA56C?
P4SMA56C orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA56C 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 P4SMA56C?
For technical support, including P4SMA56C datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA56C requirements.
6.How does Aetrix verify that P4SMA56C is sourced from the original manufacturer or authorized distributors?
All P4SMA56C 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 P4SMA56C meets industry standards.
7.What is the process for return or replacement of P4SMA56C?
All P4SMA56C units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA56C, 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 P4SMA56C part is unused and in its original packaging.
Return procedure for P4SMA56C:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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