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Taiwan Semiconductor Corporation P6SMB170AH
- Part No.:
- P6SMB170AH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB170AH.pdf
- Description:
- TVS DIODE 145VWM 234VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:9,557
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Product details
Overview
P6SMB170AH from Taiwan Semiconductor is a unidirectional 600W surface-mount Transient Voltage Suppressor (TVS) diode with a 170V breakdown voltage range (162–179V), 145V standoff voltage, and 234V clamping voltage at 2.6A peak pulse current. It features glass-passivated junction, AEC-Q101 qualification, and is designed for automotive ECU and power supply rail protection against ISO 7637-2 Pulse 1/2a/2b/3a/3b transients.
For engineers reviewing the P6SMB170AH datasheet, P6SMB170AH pinout, P6SMB170AH application, or P6SMB170AH equivalent, key selection criteria include its DO-214AA (SMB) package compatibility, 150°C maximum junction temperature, <1μA reverse leakage at 145V, and fast sub-1ps response time-critical for protecting CAN/LIN interface ICs and microcontroller I/O rails in harsh environments.
Technical Context
The P6SMB170AH operates as a unidirectional avalanche-clamping TVS diode, triggered when reverse voltage exceeds its VBR (162–179V) and clamping to ≤234V at IPPM = 2.6A under 10/1000μs waveform. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<1μA @ 145V).
Thermally, it delivers RθJA = 55°C/W and RθJC = 10°C/W, enabling reliable operation up to TJ = 150°C. It meets JESD201 Class 2 whisker resistance and J-STD-020 Moisture Sensitivity Level 1-supporting lead-free reflow without popcorn risk.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (Min/Max) | 162V / 179V - Defines precise avalanche initiation window; ensures consistent clamping onset across production lots |
| VWM | 145V - Maximum continuous reverse operating voltage; sets safe margin below breakdown for system-level DC rail protection |
| VC @ IPPM | 234V @ 2.6A - Clamped voltage during 10/1000μs surge; determines protected circuit's maximum transient overvoltage exposure |
| PPPM | 600W - Peak pulse power rating; supports robust immunity to automotive load-dump and inductive switching events |
| ID @ VWM | <1μA - Ultra-low reverse leakage; prevents standby current drain in battery-powered modules and sensor nodes |
| TJ Max | 150°C - Enables deployment in under-hood automotive locations and industrial power converters with high ambient temperatures |
| Response Time | <1.0ps - Sub-picosecond turn-on enables effective suppression of ESD and fast electrical fast transients (EFT) |
Pinout & Package
Package: DO-214AA (SMB), surface-mount, single-diode configuration with cathode band marking. Matte tin-plated leads compliant with J-STD-002 solderability; UL 94V-0 molding compound.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to ground or lower-potential node in unidirectional clamp configuration; defines current path during surge |
| Cathode | Reverse-biased clamping terminal | Connected to protected line (e.g., 12V rail); conducts avalanche current when transient exceeds VBR |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive electronics per stress test requirements-enables use in engine control, body electronics, and ADAS modules |
| Glass-passivated junction | Ensures long-term parameter stability and low parameter drift under thermal cycling and humidity exposure |
| ISO 7637-2 compliance | Rated for Pulse 1 (inductive load dump), Pulse 2a/2b (switching transients), and Pulse 3a/3b (EFT)-covers full automotive transient standard |
| Low-profile SMB package | Enables automated placement on dense PCBs and fits constrained spaces in automotive connectors and power modules |
| J-STD-020 MSL Level 1 | Zero bake requirement before reflow; simplifies manufacturing flow and reduces assembly cost |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: 12V/24V battery-fed ECUs exposed to load-dump and alternator ripple in passenger vehicles and commercial trucks. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power rail and ground to clamp transients before they reach PMICs and MCU voltage regulators. Use Value: Limits rail overvoltage to ≤234V during 600W surges, preventing latch-up or permanent damage to downstream 3.3V/5V logic. |
Use Scenario: Analog sensor outputs (e.g., pressure, temperature) routed through long cables in factory automation cabinets. IC Role / Device Role / Timing Role: TVS mounted at connector entry point to shunt ESD and cable-coupled EFT pulses away from precision ADC front-ends. Use Value: <1μA leakage preserves signal integrity and offset accuracy; 234V clamping protects 24V-supplied op-amp stages without compromising dynamic range. |
| LED Driver Input Protection | Communication Bus Line Protection |
Use Scenario: Constant-current LED drivers in outdoor lighting subjected to lightning-induced surges on AC mains input. IC Role / Device Role / Timing Role: Primary-stage TVS on DC bus input to absorb repetitive 10/1000μs transients before they stress MOSFET switches and gate drivers. Use Value: 600W rating sustains repeated surge events; 150°C TJ rating allows operation inside thermally sealed luminaires. |
Use Scenario: LIN bus physical layer in automotive door modules where wiring harnesses couple noise from motors and solenoids. IC Role / Device Role / Timing Role: Unidirectional TVS on LIN line referenced to ground to suppress negative-going spikes while preserving signal integrity. Use Value: Fast <1ps response captures edge-triggered transients; 145V VWM avoids false triggering during normal LIN recessive/dominant transitions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ170A | Same DO-214AA package, identical VBR (162–179V), but rated at 600W with VC = 234V @ 2.6A-identical clamping performance | No functional difference; validated for same ISO 7637-2 pulses and AEC-Q101 | Drop-in alternative with identical footprint and electrical behavior; suitable for dual-sourcing programs |
| 1.5SMC170A | Larger DO-214AB (SMC) package (7.11 × 6.22 mm vs. SMB's 4.57 × 3.94 mm); otherwise matches VBR, VWM, and VC specs | Requires PCB layout change; higher thermal mass offers marginally better pulse energy handling but sacrifices board space | Select only when higher thermal inertia is required and board real estate permits larger footprint |
Compared with P6SMB170AH, SMBJ170A provides identical protection in the same SMB footprint, while 1.5SMC170A trades compactness for enhanced thermal robustness-making P6SMB170AH optimal for space-constrained automotive modules requiring AEC-Q101 compliance.
Availability
P6SMB170AH is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor interfaces, LED driver inputs, and communication bus line protection requiring stable component supply and AEC-Q101 assurance.
Supply support for P6SMB170AH 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 devices for automotive and industrial markets.
The P6SMB170AH belongs to TSC's AEC-Q101-qualified P6SMBx(A)H series-engineered specifically for high-reliability transient suppression in automotive power distribution and signal line protection.
FAQ
What is the maximum clamping voltage of the P6SMB170AH under standard test conditions?
The P6SMB170AH has a maximum clamping voltage (VC) of 234V when subjected to a 10/1000μs peak pulse current of 2.6A. This value is measured per ANSI/IEEE C62.35 and defines the upper voltage limit imposed on protected circuits during surge events-critical for ensuring downstream ICs remain within absolute maximum ratings. The P6SMB170AH maintains this clamping performance across its full operating temperature range.
Is the P6SMB170AH suitable for bidirectional transient protection?
No, the P6SMB170AH is a unidirectional TVS diode intended for DC rail protection where polarity is fixed. For bidirectional applications (e.g., AC lines or differential buses), the P6SMB170AH must be replaced with its bidirectional counterpart, P6SMB170CAH, which uses a center-tapped configuration and applies identical VBR and clamping specs in both directions. Using P6SMB170AH in reverse-biased AC scenarios risks catastrophic failure.
Does the P6SMB170AH meet automotive reliability standards?
Yes, the P6SMB170AH is AEC-Q101 qualified and tested per JESD201 Class 2 for tin whisker resistance and J-STD-020 Moisture Sensitivity Level 1-eliminating pre-bake requirements. It also meets ISO 7637-2 Pulse 1, 2a, 2b, 3a, and 3b, making it suitable for engine control modules, body controllers, and infotainment power supplies in passenger and commercial vehicles.
What is the standoff voltage (VWM) of the P6SMB170AH, and why does it matter?
The P6SMB170AH has a standoff voltage (VWM) of 145V, meaning it remains non-conductive under continuous reverse bias up to that level. This 145V rating provides a safe margin below its minimum breakdown voltage (162V), preventing false triggering during normal operation-including voltage tolerances, ripple, and transients within specification. Selecting a TVS with insufficient VWM margin risks premature conduction and system instability.
How does the P6SMB170AH compare to older P6SMB170H in terms of electrical performance?
The P6SMB170AH offers tighter breakdown voltage tolerance (162–179V) versus the P6SMB170H (153–187V), resulting in more predictable clamping onset and reduced variation in protected circuit overvoltage. Both share identical 600W PPPM, 234V/2.6A clamping, and DO-214AA packaging-but the "A" suffix denotes improved VBR consistency, critical for designs with narrow voltage margins.
P6SMB170AH 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):
- 145V
- Voltage - Breakdown (Min):
- 162V
- Voltage - Clamping (Max) @ Ipp:
- 234V
- Current - Peak Pulse (10/1000µs):
- 2.6A
- 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)
P6SMB170AH FAQ
1.How can I place an order for P6SMB170AH through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB170AH 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 P6SMB170AH reliable?
The price and inventory of P6SMB170AH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB170AH is usually 5 days.
3.What payment methods are accepted for P6SMB170AH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB170AH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB170AH?
P6SMB170AH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB170AH 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 P6SMB170AH?
For technical support, including P6SMB170AH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB170AH requirements.
6.How does Aetrix verify that P6SMB170AH is sourced from the original manufacturer or authorized distributors?
All P6SMB170AH 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 P6SMB170AH meets industry standards.
7.What is the process for return or replacement of P6SMB170AH?
All P6SMB170AH units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB170AH, 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 P6SMB170AH part is unused and in its original packaging.
Return procedure for P6SMB170AH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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