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Taiwan Semiconductor Corporation P6SMB56
- Part No.:
- P6SMB56
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB56.pdf
- Description:
- 600W, 56V, 10%, UNIDIRECTIONAL,
- Quantity:
- Payment:
- Shipping:
Inventory:9,361
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Product details
Overview
P6SMB56 from Taiwan Semiconductor is a unidirectional 600W surface-mount transient voltage suppressor (TVS) diode in DO-214AA (SMB) package, with breakdown voltage 50.4–61.6 V, clamping voltage 80.5 V at 7.8 A peak pulse current, and stand-off voltage 45.4 V. It protects DC power rails in switching mode power supplies, adapters, and display electronics against ESD and surge events per ISO 7637-2.
For engineers reviewing the P6SMB56 datasheet, P6SMB56 pinout, P6SMB56 application, or P6SMB56 equivalent, key selection criteria include its 600W peak pulse power rating, 10/1000μs waveform compliance, sub-1μA reverse leakage at 45.4 V, fast <1.0 ps response time, and UL 94V-0 molded case for high-reliability board-level surge protection.
Technical Context
The P6SMB56 operates as a unidirectional avalanche diode, triggered when reverse voltage exceeds its minimum breakdown threshold of 50.4 V. Its glass-passivated junction ensures stable VBR tolerance (±10% for standard, ±5% for 'A' variant) and low temperature coefficient (0.103%/°C).
Designed for 10/1000μs surge waveforms, it delivers 7.8 A peak pulse current while clamping to ≤80.5 V - enabling robust protection of 48 V nominal systems. Thermal performance is defined by RθJC = 10°C/W and RθJA = 55°C/W, supporting continuous operation up to TJ = 150°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 50.4 V / 61.6 V - defines reliable turn-on range under 1 mA test current; ensures consistent clamping onset across temperature and unit variation |
| VWM | 45.4 V - maximum continuous reverse working voltage; sets safe operating margin below breakdown for 48 V rail protection |
| VC @ IPPM | 80.5 V at 7.8 A - clamping voltage during 10/1000μs surge; determines protected circuit's maximum transient stress level |
| PPPSM | 600 W - non-repetitive peak pulse power; quantifies single-event surge energy absorption capability |
| IR @ VWM | <1 μA - ultra-low reverse leakage at rated stand-off voltage; minimizes standby power loss in always-on systems |
| Response Time | <1.0 ps - time from 0 V to VBR(min); enables effective suppression of nanosecond-scale ESD transients |
| Package | DO-214AA (SMB) - industry-standard surface-mount outline; supports automated placement and reflow soldering per J-STD-002 |
Pinout & Package
DO-214AA (SMB) package: molded epoxy case with matte tin-plated leads, cathode band marking polarity, 0.090 g weight, and UL 94V-0 flammability rating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction path | Connected to system ground or lower-potential node; carries forward surge current during bidirectional clamp (if used with external bias) |
| Cathode (banded end) | Reverse-biased clamping node | Connected to protected line (e.g., 48 V input); avalanches into conduction when transient exceeds VBR, shunting energy to ground |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures long-term VBR stability and low parameter drift over temperature and life cycle |
| ISO 7637-2 Pulse 1/2a/2b/3a/3b compliance | Validated for automotive-level load dump and inductive switching surge immunity without external filtering |
| Moisture sensitivity level 1 (J-STD-020) | Zero bake requirement before reflow; compatible with standard SMT assembly lines without dry-pack handling |
| RoHS and halogen-free (IEC 61249-2-21) | Meets global environmental compliance mandates for industrial and consumer electronics manufacturing |
| Low-profile SMB footprint | Enables compact PCB layout in space-constrained power entry and interface sections |
Applications
| Switching Mode Power Supply (SMPS) | AC-DC Adapter |
|---|---|
Use Scenario: Input rectifier stage of 48 V output SMPS subjected to line surges and coupling transients. IC Role / Device Role / Timing Role: Unidirectional TVS diode placed across bulk capacitor to clamp differential-mode surges before they reach controller IC. Use Value: Clamps 600 W transients to ≤80.5 V, protecting downstream PWM controller and MOSFET gate drivers from overvoltage damage. | Use Scenario: Secondary-side DC output rail of universal-input wall adapter exposed to user-handling ESD and cable disconnect spikes. IC Role / Device Role / Timing Role: Standoff-rated TVS connected between +VOUT and GND to absorb fast-rising transients before reaching USB-PD or load circuitry. Use Value: Sub-1 μA leakage at 45.4 V prevents no-load power budget violation; 7.8 A IPPM handles IEC 61000-4-5 Level 4 surges. |
| Flat Panel Monitor Power Board | Industrial Control Module Input |
Use Scenario: 24–48 V auxiliary supply rail feeding logic and backlight drivers in LCD monitor mainboard. IC Role / Device Role / Timing Role: Primary overvoltage protector on DC input connector, coordinated with fuse and common-mode choke. Use Value: 80.5 V clamping limits stress on 100 V-rated electrolytic capacitors and 60 V MOSFETs, extending field lifetime. | Use Scenario: Field-wiring terminal block on PLC I/O module subject to induced lightning surges from long sensor cables. IC Role / Device Role / Timing Role: First-stage TVS on each channel input, paired with series impedance for coordinated protection. Use Value: 600 W rating absorbs multi-kV induced surges per IEC 61000-4-4; DO-214AA mechanical robustness withstands vibration and thermal cycling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ56A (Bourns) | Same DO-214AA package, 56 V nominal, 80.5 V clamping, but tighter VBR tolerance (53.2–58.8 V) and higher IPPM (8.1 A) | Identical use cases; slightly improved surge margin due to higher peak current rating | Select SMBJ56A if tighter VBR spec or marginally higher surge headroom is required; same PCB footprint. |
| 1.5SMC56A (ON Semiconductor) | Same electrical specs (VBR: 53.2–58.8 V, VC: 80.5 V), but larger DO-214AB (SMC) package (2.5 mm height vs. SMB's 2.2 mm) | Requires PCB pad revision; better thermal dissipation (RθJA ≈ 40°C/W) for high-ambient environments | Choose 1.5SMC56A only when thermal derating is critical and board space allows larger SMC outline. |
Compared with SMBJ56A and 1.5SMC56A, the P6SMB56 offers identical clamping performance in a lower-profile SMB package with J-STD-020 Level 1 moisture handling - making it optimal for high-volume, space-constrained, and reflow-sensitive designs where thermal margin is sufficient.
Availability
P6SMB56 is available at Aetrix Electronics and suitable for switching mode power supplies, AC-DC adapters, and flat panel monitor power boards requiring stable component supply and full ISO 7637-2 compliance.
Supply support for P6SMB56 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, serving industrial, computing, and consumer markets since 1979.
The P6SMB series belongs to TSC's transient voltage suppression product line, engineered specifically for high-power, surface-mount surge protection in automotive-grade and industrial power conversion systems.
FAQ
What is the maximum clamping voltage of the P6SMB56 under standard surge conditions?
The P6SMB56 has a maximum clamping voltage (VC) of 80.5 V when subjected to its rated 10/1000 μs peak pulse current of 7.8 A. This value is measured per ANSI/IEEE C62.35 and guarantees the protected circuit sees no more than 80.5 V during a standardized surge event - critical for ensuring compatibility with 100 V-rated downstream components in 48 V systems.
Is the P6SMB56 suitable for bidirectional transient suppression?
No - the P6SMB56 is a unidirectional TVS diode intended for DC line protection with defined polarity (cathode to protected line). For bidirectional applications such as AC signal lines or data buses, the P6SMB56A variant or dedicated bipolar parts like P6SMB56CA must be used, as stated in the datasheet's "Devices for Bipolar Applications" section.
Does the P6SMB56 require special handling during PCB assembly?
No - the P6SMB56 has Moisture Sensitivity Level 1 per J-STD-020, meaning it can be stored indefinitely at ambient conditions and placed directly into standard reflow profiles without baking or dry-pack requirements. Its matte tin-plated leads are fully solderable per J-STD-002, supporting high-yield automated assembly.
How does the P6SMB56 compare to the P6SMB56A in terms of electrical performance?
The P6SMB56A offers tighter breakdown voltage tolerance (53.2–58.8 V vs. 50.4–61.6 V), slightly higher stand-off voltage (47.8 V vs. 45.4 V), and marginally improved peak pulse current (8.1 A vs. 7.8 A), while maintaining identical clamping voltage (77.0 V vs. 80.5 V). Both share the same DO-214AA package, thermal specs, and ISO 7637-2 compliance - the 'A' suffix denotes enhanced parametric consistency.
Can the P6SMB56 be used in automotive applications?
Yes - the P6SMB56 meets ISO 7637-2 Pulse 1, 2a, 2b, 3a, and 3b requirements for automotive transient immunity and operates across –55°C to +150°C junction temperature. It is qualified for use in infotainment power supplies, body control modules, and ADAS camera power inputs where 48 V rail protection is needed, provided system-level testing validates full vehicle-level compliance.
P6SMB56 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:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 45.4V
- Voltage - Breakdown (Min):
- 50.4V
- Voltage - Clamping (Max) @ Ipp:
- 80.5V
- Current - Peak Pulse (10/1000µs):
- 7.8A
- 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)
P6SMB56 FAQ
1.How can I place an order for P6SMB56 through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB56 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 P6SMB56 reliable?
The price and inventory of P6SMB56 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB56 is usually 5 days.
3.What payment methods are accepted for P6SMB56?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB56 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB56?
P6SMB56 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB56 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 P6SMB56?
For technical support, including P6SMB56 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB56 requirements.
6.How does Aetrix verify that P6SMB56 is sourced from the original manufacturer or authorized distributors?
All P6SMB56 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 P6SMB56 meets industry standards.
7.What is the process for return or replacement of P6SMB56?
All P6SMB56 units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB56, 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 P6SMB56 part is unused and in its original packaging.
Return procedure for P6SMB56:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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