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Taiwan Semiconductor Corporation P6SMB56CH
- Part No.:
- P6SMB56CH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB56CH.pdf
- Description:
- 600W, 56V, 10%, BIDIRECTIONAL, T
- Quantity:
- Payment:
- Shipping:
Inventory:8,476
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Product details
Overview
P6SMB56CH from Taiwan Semiconductor is a bidirectional 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 AEC-Q101 qualification for automotive-grade reliability. It protects sensitive electronics against ISO 7637-2 Pulse 1/2a/2b/3a/3b transients in power-line and signal-line applications.
For engineers reviewing the P6SMB56CH datasheet, P6SMB56CH pinout, P6SMB56CH application, or P6SMB56CH equivalent, key selection criteria include unidirectional vs. bidirectional configuration (CH = bidirectional), clamping performance under 10/1000 µs surge, junction temperature range (−55°C to +150°C), and compliance with automotive ESD/EMC immunity standards.
Technical Context
The P6SMB56CH is a glass-passivated, bipolar TVS diode designed for fast transient suppression in harsh environments. Its bidirectional structure enables symmetrical clamping in both polarities, eliminating polarity-sensitivity during board-level ESD or load-dump events. The device operates with ≤1 µA reverse leakage at 45.4 V standoff voltage and achieves sub-1 ps response time from 0 V to breakdown.
Thermally, it features 10°C/W junction-to-case and 55°C/W junction-to-ambient resistance, supporting sustained operation up to 150°C junction temperature. It meets JESD201 Class 2 whisker resistance and J-STD-020 Moisture Sensitivity Level 1, enabling robust reflow compatibility without baking.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 50.4 V / 61.6 V - Ensures reliable triggering above system operating voltage while avoiding false clamping during normal transients |
| VWM | 45.4 V - Maximum continuous reverse working voltage; defines safe DC/AC operating margin before conduction begins |
| VC @ IPPM | 80.5 V at 7.8 A - Peak clamped voltage during 10/1000 µs surge; determines maximum stress imposed on protected ICs |
| PPPSM | 600 W - Non-repetitive peak pulse power rating; defines single-event energy-handling capability |
| IR @ VWM | <1 µA - Ultra-low leakage ensures minimal standby power loss and signal integrity in high-impedance circuits |
| TJ Range | −55°C to +150°C - Supports operation in under-hood automotive, industrial motor control, and outdoor lighting environments |
| Package | DO-214AA (SMB) - Surface-mount footprint (4.57 × 3.94 × 2.29 mm) compatible with automated pick-and-place and reflow |
Pinout & Package
DO-214AA (SMB) package: molded plastic case with matte tin-plated leads, cathode band marking for polarity identification (bidirectional use renders band non-functional but retained for mechanical consistency). Weight ≈ 0.090 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (marked band) | Bidirectional terminal pair | Identical electrical behavior in both directions; no functional anode/cathode-band is mechanical reference only |
| Case (body) | Non-terminating thermal path | No electrical connection; serves as primary heat sink interface via PCB copper pour under tab area |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control units, body electronics, and ADAS sensors requiring zero-failure reliability |
| Glass passivated junction | Enhances long-term stability and moisture resistance versus epoxy-passivated alternatives, critical for 15+ year field life |
| ISO 7637-2 compliance | Withstands defined load-dump (Pulse 5a/b), coupled transient (Pulse 1/2a/2b), and EFT (Pulse 3a/3b) waveforms without degradation |
| Low-profile SMB package | Enables high-density routing in space-constrained modules such as LED drivers, CAN bus nodes, and infotainment power supplies |
| UL 94V-0 molding compound | Self-extinguishing encapsulation prevents flame propagation in fault conditions per safety-critical system requirements |
Applications
| Automotive Power Line Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: 12 V battery line in vehicle ECUs subjected to load dump (up to 40 V) and alternator ripple. IC Role / Device Role: Primary overvoltage clamp placed upstream of LDOs, CAN transceivers, and microcontrollers. Use Value: Limits transient voltage to ≤80.5 V, preventing latch-up or gate oxide damage in downstream 3.3 V/5 V logic. | Use Scenario: 24 V analog input channel on PLC I/O module exposed to inductive kickback from solenoid valves. IC Role / Device Role: Front-end protection element between field wiring and precision ADC front-end. Use Value: Absorbs 600 W surges without degradation, preserving signal accuracy and eliminating need for external series impedance. |
| LED Driver Output Protection | USB-C Power Delivery Line Protection |
Use Scenario: Constant-current output stage of automotive headlamp driver experiencing back-EMF during rapid dimming transitions. IC Role / Device Role: Bidirectional clamp across output terminals to suppress reverse polarity and switching spikes. Use Value: Symmetric clamping ensures protection regardless of current direction, extending LED array lifetime under PWM stress. | Use Scenario: VBUS line in USB-C port of automotive infotainment unit facing ESD events per IEC 61000-4-2 ±15 kV contact discharge. IC Role / Device Role: Secondary-level TVS after common-mode choke, shunting ESD energy before Type-C controller IC. Use Value: Sub-1 ps response captures fast ESD rise time; low capacitance (<50 pF at 0 V) avoids signal integrity impact on 10 Gbps data lanes. |
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 | Same DO-214AA package; VBR = 64.4–71.4 V, VC = 93.6 V @ 6.4 A, PPPSM = 600 W | Higher clamping voltage increases stress on protected circuit; suitable where higher VWM margin is needed | Select SMBJ58CA when system nominal voltage exceeds 48 V and higher standoff is required |
| 1.5SMC58CA | DO-214AB (SMC) package; larger footprint (7.11 × 6.22 × 2.34 mm); VBR = 64.4–71.4 V, VC = 93.6 V @ 6.4 A | Higher thermal mass supports longer surge duration but incompatible with SMB-reflow profiles and dense layouts | Choose 1.5SMC58CA only when PCB layout allows SMC footprint and enhanced thermal dissipation is prioritized over size |
Compared with SMBJ58CA and 1.5SMC58CA, the P6SMB56CH offers lower clamping voltage (80.5 V vs. ≥93.6 V) and smaller SMB footprint-critical for automotive modules where board space and voltage margin are tightly constrained.
Availability
P6SMB56CH is available at Aetrix Electronics and suitable for automotive ECU design, industrial PLC I/O protection, and LED lighting systems requiring stable component supply across extended production lifecycles.
Supply support for P6SMB56CH 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, with global distribution and AEC-Q101 validation capabilities.
The P6SMB56CH belongs to TSC's P6SMBxH/AH family of automotive-grade TVS diodes, engineered specifically for ISO 7637-2-compliant transient suppression in 12 V/24 V vehicle networks and industrial power interfaces.
FAQ
What does the "CH" suffix indicate in P6SMB56CH?
The "CH" suffix denotes a bidirectional configuration: the P6SMB56CH functions identically in both forward and reverse bias, making it ideal for AC-coupled lines or polarity-agnostic protection. Unlike unidirectional variants (e.g., P6SMB56H), the CH version has no functional cathode band-its marking serves only mechanical orientation.
Is P6SMB56CH compliant with automotive reliability standards?
Yes, the P6SMB56CH is AEC-Q101 qualified and meets ISO 7637-2 Pulse 1/2a/2b/3a/3b test requirements. It also passes JESD201 Class 2 whisker testing and J-STD-020 Moisture Sensitivity Level 1, confirming suitability for automotive under-hood and cabin applications without preconditioning.
What is the maximum clamping voltage of P6SMB56CH under surge conditions?
The P6SMB56CH clamps to a maximum of 80.5 V at 7.8 A peak pulse current (10/1000 µs waveform). This value is guaranteed across −55°C to +150°C junction temperature and defines the upper voltage limit imposed on protected circuitry during transient events.
Can P6SMB56CH replace unidirectional TVS diodes like P6SMB56H in existing designs?
No-P6SMB56CH is bidirectional while P6SMB56H is unidirectional. Swapping requires verifying that the protected circuit tolerates symmetrical clamping and that no DC bias conflicts arise. Layout changes may be needed if polarity-sensitive routing exists, though the DO-214AA footprint remains identical.
Does P6SMB56CH require derating at elevated ambient temperatures?
Yes-peak pulse power must be derated above 25°C ambient per Figure 2 in the datasheet. At 85°C, P6SMB56CH retains ~70% of its 600 W rating; at 125°C, it drops to ~40%. Thermal design must account for RθJA = 55°C/W and ensure junction temperature stays ≤150°C under worst-case surge repetition.
P6SMB56CH 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):
- 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
P6SMB56CH FAQ
1.How can I place an order for P6SMB56CH through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB56CH 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 P6SMB56CH reliable?
The price and inventory of P6SMB56CH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB56CH is usually 5 days.
3.What payment methods are accepted for P6SMB56CH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB56CH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB56CH?
P6SMB56CH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB56CH 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 P6SMB56CH?
For technical support, including P6SMB56CH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB56CH requirements.
6.How does Aetrix verify that P6SMB56CH is sourced from the original manufacturer or authorized distributors?
All P6SMB56CH 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 P6SMB56CH meets industry standards.
7.What is the process for return or replacement of P6SMB56CH?
All P6SMB56CH units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB56CH, 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 P6SMB56CH part is unused and in its original packaging.
Return procedure for P6SMB56CH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB56CH Tags
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