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Taiwan Semiconductor Corporation P6SMB47A
- Part No.:
- P6SMB47A
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB47A.pdf
- Description:
- TVS DIODE 40.2VWM 64.8VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:7,276
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Product details
Overview
P6SMB47A from Taiwan Semiconductor is a unidirectional 600W surface-mount transient voltage suppressor (TVS) diode with a standoff voltage of 40.2V, breakdown voltage range of 44.7–49.4V, and clamping voltage of 64.8V at 9.7A peak pulse current. It protects DC power rails in switching mode power supplies and adapters against ESD and surge events per ISO 7637-2.
For engineers reviewing the P6SMB47A datasheet, P6SMB47A pinout, P6SMB47A application, or P6SMB47A equivalent, key selection criteria include its DO-214AA (SMB) package compatibility, 1μA max reverse leakage at VWM, 1.0ps response time, and compliance with automotive pulse immunity standards.
Technical Context
The P6SMB47A operates as a unidirectional avalanche diode, triggered when reverse voltage exceeds its minimum breakdown voltage (44.7V). Its glass-passivated junction ensures stable clamping performance under repetitive transients, and its thermal resistance (RθJA = 55°C/W) supports operation up to 150°C junction temperature.
Designed for 10/1000μs surge waveforms, it delivers 600W non-repetitive peak pulse power with a maximum clamping voltage of 64.8V - limiting downstream voltage stress during ISO 7637-2 Pulse 1, 2a, 2b, 3a, and 3b events in automotive and industrial power systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 40.2 V - Maximum continuous reverse operating voltage before leakage exceeds 1 μA |
| VBR (min/max) | 44.7 V / 49.4 V - Breakdown occurs within this range at 1 mA test current; defines turn-on threshold tolerance |
| VC @ IPPM | 64.8 V at 9.7 A - Clamped voltage during 10/1000μs surge; determines protected circuit's max overvoltage exposure |
| PPPSM | 600 W - Peak pulse power handling capability; enables robust protection against automotive load dump and inductive switching |
| IR @ VWM | <1 μA - Ultra-low leakage preserves efficiency in high-impedance bias networks and low-power standby circuits |
| Response Time | <1.0 ps - Sub-nanosecond turn-on ensures suppression before sensitive ICs experience overstress |
| TJ Max | +150 °C - Enables reliable operation in under-hood automotive environments and enclosed power converters |
Pinout & Package
Package: DO-214AA (SMB), surface-mount, single-diode configuration with cathode band marking. Matte tin-plated leads meet J-STD-002 solderability requirements; polarity is marked on the body.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to system ground or lower-potential rail in unidirectional TVS configuration |
| Cathode | Reverse-biased clamping terminal | Connected to protected line (e.g., +48V rail); conducts during overvoltage to shunt surge energy to ground |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures long-term stability of breakdown voltage and leakage under thermal cycling and humidity stress |
| ISO 7637-2 compliance | Validated for Pulse 1 (inductive load dump), Pulse 2a/2b (switching transients), and Pulse 3a/3b (line impedance coupling) |
| Moisture sensitivity level 1 | Enables standard SMT reflow without baking; eliminates production delays and moisture-related popcorning |
| RoHS & halogen-free | Meets IEC 61249-2-21 and EU RoHS Directive; suitable for environmentally regulated industrial and automotive programs |
| Low-profile SMB package | 0.090 g weight and JEDEC-standard DO-214AA footprint enable high-density PCB layouts and automated placement |
Applications
| Switching Mode Power Supply (SMPS) | AC-DC Adapter |
|---|---|
Use Scenario: Input rectifier output rail in 48V telecom SMPS subjected to lightning-induced surges and MOSFET switching transients. IC Role / Device Role / Timing Role: Unidirectional TVS clamp protecting primary-side controller ICs and bulk capacitor from >100V transients. Use Value: Limits rail voltage to ≤64.8V during 600W surges, preventing gate oxide rupture in PWM controllers and electrolytic capacitor overvoltage failure. | Use Scenario: Secondary-side 12V/24V output rail in wall-mounted AC-DC adapters exposed to ESD and fast transient bursts. IC Role / Device Role / Timing Role: Output-line transient suppressor placed before LDO regulators and USB interface ICs. Use Value: Sub-1ps response clamps ESD events before LDO internal pass devices saturate, maintaining regulated output integrity during ±8kV contact discharge. |
| Automotive Infotainment Display | Industrial Motor Drive Control Board |
Use Scenario: 12V power input to LCD display module in vehicle dashboard, subject to battery disconnect/load dump pulses. IC Role / Device Role / Timing Role: Primary overvoltage protector on main power entry, upstream of DC-DC converters and display driver ASICs. Use Value: Withstands ISO 7637-2 Pulse 5a (load dump) up to 60V for 400ms while clamping to 64.8V - preserving display logic and backlight drivers. | Use Scenario: 24V control rail feeding microcontroller, optocouplers, and gate drivers in servo drive PCBs near high-current motor switching zones. IC Role / Device Role / Timing Role: Rail-level transient suppressor guarding isolated communication interfaces (RS-485, CAN) and MCU reset circuitry. Use Value: 1μA leakage at 40.2V prevents false resets in low-power sleep modes; 64.8V clamping avoids brownout in 3.3V/5V LDOs during IGBT commutation spikes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ47A (Bourns) | Identical DO-214AA package, same VWM/VBR/VC specs, but rated for 600W per JEDEC; slightly higher RθJA (60°C/W vs. 55°C/W) | Same automotive and industrial use cases; validated for identical ISO 7637-2 pulses | Select SMBJ47A if Bourns qualification is required or if sourcing diversity is needed without layout change |
| 1.5SMC47A (ON Semiconductor) | Same electrical specs and SMB package, but higher RθJA (65°C/W); lead finish is matte tin, same as P6SMB47A | Compatible in all P6SMB47A applications; used in legacy industrial designs with ON Semi BOMs | Choose 1.5SMC47A when consolidating with existing ON Semi TVS families or for dual-sourcing across foundries |
Compared with SMBJ47A and 1.5SMC47A, the P6SMB47A offers marginally better thermal performance (RθJA = 55°C/W) and is optimized for high-volume SMT lines with its level-1 moisture sensitivity rating - making it preferred for cost-sensitive, high-reliability automotive and telecom power modules.
Availability
P6SMB47A is available at Aetrix Electronics and suitable for switching mode power supplies, AC-DC adapters, and automotive infotainment displays requiring stable component supply and full ISO 7637-2 compliance.
Supply support for P6SMB47A 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 global industrial, automotive, and consumer markets since 1979.
The P6SMB47A belongs to TSC's P6SMB series of 600W SMB-packaged TVS diodes, engineered specifically for robust, cost-effective transient protection in automotive power distribution and industrial power conversion systems.
FAQ
What is the polarity configuration of the P6SMB47A?
The P6SMB47A is a unidirectional TVS diode with cathode-band marking. Its anode connects to ground and cathode to the protected line. This configuration provides asymmetric clamping - conducting only during reverse overvoltage events - and is distinct from bidirectional variants (e.g., P6SMB47CA) that protect both polarities.
Does the P6SMB47A meet automotive surge immunity standards?
Yes, the P6SMB47A meets ISO 7637-2 requirements for Pulse 1 (inductive switch-off), Pulse 2a/2b (supply line transients), and Pulse 3a/3b (capacitive coupling). Its 600W peak pulse power and 64.8V clamping voltage are validated for these waveforms, making it suitable for 12V/24V automotive power inputs per OEM specifications.
What is the maximum reverse leakage current for the P6SMB47A at its standoff voltage?
The P6SMB47A exhibits a maximum reverse leakage current of 1 μA at its standoff voltage (VWM = 40.2 V) and 25°C ambient temperature. This ultra-low leakage ensures minimal power loss in always-on circuits and prevents false triggering in high-impedance monitoring paths.
Can the P6SMB47A be used in bidirectional signal line protection?
No - the P6SMB47A is unidirectional and unsuitable for bidirectional signal lines such as RS-485 or CAN without external circuitry. For symmetric transient suppression, use the bidirectional variant P6SMB47CA, which features identical VBR and VC in both directions and no polarity dependency.
What is the thermal resistance from junction to ambient for the P6SMB47A?
The P6SMB47A has a junction-to-ambient thermal resistance (RθJA) of 55°C/W under standard JEDEC test conditions (single device on 1-inch² copper pad). This value assumes no additional heatsinking; actual board-level RθJA will improve with larger copper areas or thermal vias.
P6SMB47A 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):
- 40.2V
- Voltage - Breakdown (Min):
- 44.7V
- Voltage - Clamping (Max) @ Ipp:
- 64.8V
- Current - Peak Pulse (10/1000µs):
- 9.7A
- 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)
P6SMB47A FAQ
1.How can I place an order for P6SMB47A through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB47A 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 P6SMB47A reliable?
The price and inventory of P6SMB47A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB47A is usually 5 days.
3.What payment methods are accepted for P6SMB47A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB47A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB47A?
P6SMB47A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB47A 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 P6SMB47A?
For technical support, including P6SMB47A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB47A requirements.
6.How does Aetrix verify that P6SMB47A is sourced from the original manufacturer or authorized distributors?
All P6SMB47A 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 P6SMB47A meets industry standards.
7.What is the process for return or replacement of P6SMB47A?
All P6SMB47A units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB47A, 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 P6SMB47A part is unused and in its original packaging.
Return procedure for P6SMB47A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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