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Taiwan Semiconductor Corporation P6SMB51C
- Part No.:
- P6SMB51C
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB51C.pdf
- Description:
- 600W, 51V, 10%, BIDIRECTIONAL, T
- Quantity:
- Payment:
- Shipping:
Inventory:4,486
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Product details
Overview
P6SMB51C from Taiwan Semiconductor is a bidirectional 600W surface-mount transient voltage suppressor (TVS) diode designed for overvoltage protection in DC power lines and signal paths. It features a standoff voltage of 41.3 V, breakdown voltage range of 45.9–56.1 V at 1 mA, clamping voltage of 73.5 V at 8.5 A peak pulse current, and operates across –55°C to +150°C junction temperature. It is used in switching mode power supplies and industrial adapters to absorb ISO 7637-2 Pulse 1/2a/2b/3a/3b transients.
For engineers reviewing the P6SMB51C datasheet, P6SMB51C pinout, P6SMB51C application, or P6SMB51C equivalent, key selection criteria include its DO-214AA (SMB) package compatibility, bidirectional clamping symmetry, 1.0 μA max reverse leakage at VWM, 10 ns response time, and compliance with automotive surge immunity standards.
Technical Context
The P6SMB51C is a unidirectional/bidirectional TVS diode configured as a single silicon avalanche junction with glass passivated chip construction. Its clamping behavior follows the IEC 61000-4-5 and ISO 7637-2 Pulse 1/2a/2b/3a/3b waveforms, delivering stable voltage limiting under 10/1000 μs surge conditions.
Thermal performance is defined by RθJC = 10°C/W and RθJA = 55°C/W, enabling reliable operation up to 150°C junction temperature. The device exhibits a VBR temperature coefficient of 0.102%/°C and maintains <1 μA reverse leakage above 41.3 V standoff voltage.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 41.3 V - Maximum continuous reverse operating voltage before significant leakage begins |
| VBR min/max | 45.9 V / 56.1 V at 1 mA - Confirmed breakdown range defining turn-on threshold tolerance |
| VC @ IPPM | 73.5 V at 8.5 A - Clamped voltage during 10/1000 μs surge, limiting downstream stress |
| PPPSM | 600 W - Peak pulse power handling per single non-repetitive 10/1000 μs event |
| IR @ VWM | ≤1 μA - Low leakage ensures minimal standby power loss in always-on circuits |
| TJ max | +150°C - Enables use in high-temperature environments such as enclosed power adapters |
| Package | DO-214AA (SMB) - Standardized surface-mount outline compatible with automated PCB assembly |
Pinout & Package
DO-214AA (SMB) package: molded plastic case with matte tin-plated leads, polarity indicated by cathode band; weight ≈ 0.090 g; meets UL 94V-0 and JESD201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | High-side terminal for unidirectional configuration; common terminal for bidirectional operation | Defines polarity reference point; in P6SMB51C (bidirectional), both terminals are functionally symmetric for AC or differential surge suppression |
| Anode (non-banded end) | Low-side terminal for unidirectional configuration; second terminal for bidirectional operation | Completes bidirectional clamping path; no internal distinction between anode/cathode in C-suffix devices-electrical characteristics apply identically in both directions |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Electrical specs identical in both directions-enables single-device protection of AC lines or differential buses without polarity concerns |
| Fast response time | <1.0 ps rise time from 0 V to VBR min-ensures clamping activation prior to IC damage thresholds |
| ISO 7637-2 compliance | Validated against Pulse 1 (inductive load dump), Pulse 2a/2b (switching transients), and Pulse 3a/3b (capacitive coupling)-required for automotive ECUs and body electronics |
| Moisture sensitivity level | MSL Level 1 (per J-STD-020)-no floor life limitation or bake requirement before reflow |
| RoHS & halogen-free | Complies with EU RoHS Directive 2011/65/EU and IEC 61249-2-21-supports green manufacturing and end-of-life recycling |
Applications
| Switching Mode Power Supply (SMPS) | Automotive Body Control Module (BCM) |
|---|---|
Use Scenario: Protection of 48 V input rails in telecom SMPS against load dump and line transients. IC Role / Device Role / Timing Role: Transient voltage suppressor placed at DC input stage to clamp surges before they reach PWM controller and MOSFET gate drivers. Use Value: Limits peak voltage to 73.5 V during 600 W 10/1000 μs events-prevents latch-up or oxide rupture in downstream 100 V-rated components. | Use Scenario: Surge suppression on LIN bus or sensor supply lines exposed to battery disconnect transients. IC Role / Device Role / Timing Role: Bidirectional TVS connected across VCC–GND to absorb both positive and negative pulses per ISO 7637-2 Pulse 2a/2b. Use Value: Maintains signal integrity below 73.5 V clamping while drawing only ≤1 μA at 41.3 V-minimizes quiescent current impact on low-power BCM sleep modes. |
| Industrial AC-DC Adapter | Point-of-Load (POL) DC Distribution |
Use Scenario: Input-stage protection in universal-input (90–264 VAC) adapters subjected to lightning-induced surges. IC Role / Device Role / Timing Role: Primary-side TVS placed after bridge rectifier but before bulk capacitor to shunt fast-rising transients. Use Value: Withstands 600 W peak power and 8.5 A IPPM-provides robustness beyond EN 61000-4-5 Level 4 requirements without derating. | Use Scenario: Protection of 12 V/24 V distribution nodes feeding multiple microcontrollers and sensors in factory automation PLCs. IC Role / Device Role / Timing Role: Localized TVS mounted near connector entry points to prevent surge propagation across backplane traces. Use Value: DO-214AA footprint allows dense placement; 0.090 g mass supports vibration-resistant mounting in harsh industrial enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ51CA | Same DO-214AA package, 600 W rating, VBR = 56.7–62.7 V, VC = 82.4 V @ 7.3 A - higher clamping voltage than P6SMB51C's 73.5 V | Higher clamping reduces margin for 51 V-rated downstream circuitry; suitable where system VMAX > 82 V | Select SMBJ51CA only if layout allows higher clamping headroom and thermal design accommodates lower IPPM |
| 1.5SMC51C | DO-214AB (SMC) package, same 600 W rating, VBR = 45.9–56.1 V, VC = 73.5 V @ 8.5 A - identical electrical specs but larger footprint and 1.1 g weight | Requires PCB pad redesign; better thermal dissipation (RθJA ≈ 40°C/W vs. 55°C/W) for sustained surge duty cycles | Choose 1.5SMC51C when board space permits and long-duration surge testing exceeds single-pulse limits |
Compared with SMBJ51CA and 1.5SMC51C, the P6SMB51C offers the lowest clamping voltage in DO-214AA form factor and optimal balance of surge robustness, leakage control, and automated assembly compatibility-making it preferred for space-constrained, high-volume adapter and BCM designs.
Availability
P6SMB51C is available at Aetrix Electronics and suitable for switching mode power supplies, automotive body control modules, and industrial AC-DC adapters requiring stable component supply with full traceability and lifecycle management.
Supply support for P6SMB51C 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 for industrial, automotive, and consumer applications.
The P6SMB51C belongs to TSC's P6SMBx series of 600 W surface-mount TVS diodes engineered specifically for ISO 7637-2-compliant automotive and high-reliability industrial surge protection with MSL Level 1 handling and halogen-free construction.
FAQ
What does the "C" suffix indicate in P6SMB51C?
The "C" suffix in P6SMB51C denotes bidirectional configuration-meaning the device provides symmetrical transient suppression in both forward and reverse directions. Unlike unidirectional variants (e.g., P6SMB51), the P6SMB51C has identical VBR, VC, and leakage characteristics regardless of voltage polarity applied across its terminals, making it ideal for AC-coupled or differential signal lines. This is confirmed in the official Taiwan Semiconductor datasheet section "Devices for Bipolar Applications".
Is P6SMB51C compliant with automotive surge standards?
Yes, the P6SMB51C is explicitly rated to meet ISO 7637-2 Pulse 1, 2a, 2b, 3a, and 3b test waveforms per the Taiwan Semiconductor datasheet. Its 600 W peak pulse power rating, 73.5 V clamping voltage at 8.5 A, and sub-1 ps response time ensure effective suppression of load dump, inductive switching, and capacitive coupling transients encountered in automotive ECU and BCM applications. No additional external components are required to satisfy these standards.
What is the maximum clamping voltage of P6SMB51C under surge conditions?
The maximum clamping voltage of P6SMB51C is 73.5 V, measured at 8.5 A peak pulse current using the standardized 10/1000 μs waveform. This value is guaranteed across the full operating temperature range and represents the highest voltage that will appear across the P6SMB51C during a worst-case transient event-critical for ensuring downstream components remain within their absolute maximum ratings. The clamping voltage is verified per ANSI/IEEE C62.35 definitions.
Can P6SMB51C be used in place of unidirectional P6SMB51?
No-P6SMB51C and P6SMB51 are not interchangeable without circuit review. While both share identical VBR (45.9–56.1 V) and VC (73.5 V) values, the P6SMB51 is unidirectional and requires correct polarity orientation, whereas the P6SMB51C is bidirectional with no polarity dependence. Substituting one for the other may result in improper clamping behavior or failure to suppress reverse-polarity transients. Always verify schematic symbol and layout markings before replacement.
What is the moisture sensitivity level (MSL) of P6SMB51C?
The P6SMB51C has a moisture sensitivity level of MSL Level 1 per J-STD-020, meaning it has unlimited floor life at standard ambient conditions (≤30°C / 60% RH) and requires no baking prior to reflow soldering. This simplifies manufacturing logistics and eliminates yield risk from popcorning during lead-free reflow profiles-a key advantage for high-throughput SMT lines producing automotive and industrial power supplies using the P6SMB51C.
P6SMB51C Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Package/Case:
- DO-214AA, SMB
- Series:
- P6SMB
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 41.3V
- Voltage - Breakdown (Min):
- 45.9V
- Voltage - Clamping (Max) @ Ipp:
- 73.5V
- Current - Peak Pulse (10/1000µs):
- 8.5A
- Power - Peak Pulse:
- 600W
- 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-214AA (SMB)
P6SMB51C FAQ
1.How can I place an order for P6SMB51C through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB51C 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 P6SMB51C reliable?
The price and inventory of P6SMB51C are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB51C is usually 5 days.
3.What payment methods are accepted for P6SMB51C?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB51C transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB51C?
P6SMB51C orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB51C 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 P6SMB51C?
For technical support, including P6SMB51C datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB51C requirements.
6.How does Aetrix verify that P6SMB51C is sourced from the original manufacturer or authorized distributors?
All P6SMB51C 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 P6SMB51C meets industry standards.
7.What is the process for return or replacement of P6SMB51C?
All P6SMB51C units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB51C, 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 P6SMB51C part is unused and in its original packaging.
Return procedure for P6SMB51C:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB51C Tags
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