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Taiwan Semiconductor Corporation P6SMB170CA
- Part No.:
- P6SMB170CA
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB170CA.pdf
- Description:
- TVS DIODE 145VWM 234VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:6,565
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Product details
Overview
P6SMB170CA from Taiwan Semiconductor is a bidirectional 600W surface-mount transient voltage suppressor (TVS) diode in DO-214AA (SMB) package, with a minimum breakdown voltage of 153 V, maximum clamping voltage of 244 V at 2.5 A peak pulse current, and stand-off voltage of 138 V. It protects DC power rails in switching mode power supplies, adapters, and display electronics against ISO 7637-2 Pulse 1/2a/2b/3a/3b transients.
For engineers reviewing the P6SMB170CA datasheet, P6SMB170CA pinout, P6SMB170CA application, or P6SMB170CA equivalent, key selection criteria include bidirectional clamping capability, 150°C junction rating, <1 μA reverse leakage at 138 V, 10/1000 μs surge waveform compliance, and SMB package compatibility with automated SMT assembly.
Technical Context
The P6SMB170CA employs a glass-passivated silicon junction optimized for fast transient response (<1.0 ps rise time from 0 V to VBR min) and stable bidirectional clamping across both polarities. Its thermal design supports 10°C/W junction-to-case resistance and operates over –55°C to +150°C ambient range.
It meets ISO 7637-2 for automotive load-dump and inductive-switching immunity, with a temperature coefficient of VBR at 0.108%/°C - critical for predictable clamping behavior under thermal drift in industrial power systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 153 V / 187 V - ensures reliable conduction onset above normal 138 V DC rail, preventing false triggering |
| VWM | 138 V - maximum continuous reverse working voltage compatible with 120–150 VDC systems |
| VC@IPPM | 244 V @ 2.5 A - limits transient overshoot to safe levels for downstream 250 V-rated components |
| PPPSM | 600 W - handles single 10/1000 μs surges up to 2.5 A without degradation |
| IR @ VWM | <1 μA - negligible standby leakage, preserving efficiency in low-power standby modes |
| TJ max | +150°C - enables operation in high-temperature environments like enclosed power adapters |
| Package | DO-214AA (SMB) - standard surface-mount footprint with 0.090 g mass and J-STD-002 solderability |
Pinout & Package
DO-214AA (SMB) package: molded plastic case with matte tin-plated leads, polarity indicated by cathode band (bidirectional symmetry means band denotes common reference terminal).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (marked band) | Bidirectional transient clamp node | Single two-terminal device; band identifies reference terminal - identical electrical behavior in either direction |
| Case | Non-electrical mechanical interface | No internal thermal or electrical connection to die; mounting pad provides thermal path only |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures long-term stability and low parameter drift under repeated surge stress |
| ISO 7637-2 compliance (Pulse 1/2a/2b/3a/3b) | Validated protection for automotive and industrial 12/24 V systems against real-world conducted transients |
| Moisture sensitivity level 1 (J-STD-020) | Enables direct placement without baking - reduces manufacturing overhead and risk of popcorning |
| RoHS & halogen-free (IEC 61249-2-21) | Meets global environmental compliance requirements for consumer and industrial end equipment |
| Fast response time <1.0 ps | Clamps ESD and fast-edge transients before sensitive ICs experience overstress |
Applications
| Switching Mode Power Supply (SMPS) | AC-DC Adapter |
|---|---|
Use Scenario: Input rectifier stage of 100–200 VDC output SMPS subjected to line-induced surges and load dump events. IC Role / Device Role / Timing Role: Bidirectional TVS clamping element placed across bulk capacitor input to limit transient voltage excursions. Use Value: Clamps 600 W surges to ≤244 V, protecting primary-side MOSFETs and controller ICs rated for 250 V absolute maximum. | Use Scenario: Secondary-side DC output rail of universal-input 12–24 V adapter exposed to hot-plug and cable discharge events. IC Role / Device Role / Timing Role: Standoff-rated transient suppressor connected between output and ground to absorb fast-rising ESD and inductive kickback. Use Value: Maintains 138 V working margin while clamping sub-100 ns transients to safe levels for USB-PD or PoE-powered loads. |
| Flat Panel TV Power Board | Industrial Monitor Backlight Driver |
Use Scenario: 150 V bias rail supplying LED backlight boost converters in large-screen TVs experiencing EMC test pulses. IC Role / Device Role / Timing Role: Primary overvoltage protection device on high-voltage DC bus feeding LED driver ICs. Use Value: Withstands repetitive 10/1000 μs surges per IEC 61000-4-5 Level 3 without derating, ensuring field reliability. | Use Scenario: 138 V constant-current supply for CCFL or edge-lit LED backlights in medical-grade monitors requiring zero fault-induced shutdown. IC Role / Device Role / Timing Role: Fail-safe clamping component placed directly at backlight driver input terminals. Use Value: Sub-1 μA leakage preserves tight current regulation accuracy; 150°C rating sustains performance inside thermally constrained enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ170CA (Bourns) | Same 170 V VBR range, 600 W rating, DO-214AA package; VC = 244 V @ 2.5 A - identical clamping performance | Identical ISO 7637-2 compliance and moisture sensitivity level; minor marking and date-code format differences | Drop-in replacement with validated layout compatibility and same thermal derating curve |
| 1.5SMC170CA (ON Semiconductor) | Same VBR, VWM, and VC; uses DO-214AB (SMC) package - 2.5 mm wider body, higher thermal mass | Requires PCB footprint revision; better steady-state power dissipation (5 W vs. 3 W), but slower assembly throughput due to larger size | Select when enhanced thermal margin is prioritized over board space or SMT speed |
Compared with SMBJ170CA and 1.5SMC170CA, the P6SMB170CA offers identical electrical protection in the industry-standard SMB footprint, enabling direct substitution in space-constrained designs without layout change, while maintaining full ISO 7637-2 compliance and J-STD-020 level-1 handling.
Availability
P6SMB170CA is available at Aetrix Electronics and suitable for switching mode power supplies, AC-DC adapters, and flat-panel display power boards requiring stable component supply, consistent surge performance, and RoHS-compliant sourcing.
Supply support for P6SMB170CA 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 since 1979.
The P6SMB series belongs to TSC's high-reliability surface-mount TVS portfolio, engineered specifically for robust transient immunity in automotive, industrial, and consumer power conversion systems operating up to 150°C junction temperature.
FAQ
What is the clamping voltage of P6SMB170CA and how is it measured?
The P6SMB170CA has a maximum clamping voltage (VC) of 244 V, measured at a peak pulse current (IPPM) of 2.5 A using a 10/1000 μs waveform per IEC 61000-4-5. This value defines the upper voltage limit imposed on protected circuitry during worst-case transient events. The P6SMB170CA maintains this clamping performance across its full operating temperature range and after repeated surge exposure.
Is P6SMB170CA unidirectional or bidirectional, and how does the 'CA' suffix affect its function?
The 'CA' suffix in P6SMB170CA explicitly denotes a bidirectional configuration - meaning it provides symmetrical transient suppression for both positive and negative voltage excursions. Unlike unidirectional variants (e.g., P6SMB170A), the P6SMB170CA has no polarity-dependent anode/cathode assignment; the cathode band marks a common reference terminal, and clamping occurs identically in either direction.
Does P6SMB170CA meet automotive transient standards, and which specific pulses are covered?
Yes, the P6SMB170CA meets ISO 7637-2 for automotive electromagnetic compatibility, covering Pulse 1 (inductive load disconnect), Pulse 2a (sudden load removal), Pulse 2b (supply interruption), Pulse 3a (capacitive coupled noise), and Pulse 3b (ground bounce). Its 600 W rating and 244 V clamping ensure compliance across all five pulse types at 138 V system voltage.
What is the maximum steady-state power dissipation of P6SMB170CA, and how does it relate to thermal design?
The P6SMB170CA has a steady-state power dissipation (Ptot) of 3 W at TA = 25°C, with thermal resistance RθJA = 55°C/W and RθJC = 10°C/W. In practice, this means the device can safely dissipate continuous leakage power up to 3 W only with adequate copper area and airflow; for typical TVS use (microamp-level leakage), thermal design focuses on surge energy absorption rather than steady-state heating.
Can P6SMB170CA be used in place of P6SMB170A, and what are the key functional differences?
No - P6SMB170CA and P6SMB170A are not interchangeable. P6SMB170A is unidirectional (anode-cathode asymmetry), while P6SMB170CA is bidirectional. Using P6SMB170A in a bipolar application risks failure during negative transients. The P6SMB170CA must be selected when protection is required for AC-coupled lines, floating rails, or systems with undefined polarity reversal.
P6SMB170CA 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):
- 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:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
P6SMB170CA FAQ
1.How can I place an order for P6SMB170CA through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB170CA 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 P6SMB170CA reliable?
The price and inventory of P6SMB170CA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB170CA is usually 5 days.
3.What payment methods are accepted for P6SMB170CA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB170CA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB170CA?
P6SMB170CA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB170CA 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 P6SMB170CA?
For technical support, including P6SMB170CA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB170CA requirements.
6.How does Aetrix verify that P6SMB170CA is sourced from the original manufacturer or authorized distributors?
All P6SMB170CA 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 P6SMB170CA meets industry standards.
7.What is the process for return or replacement of P6SMB170CA?
All P6SMB170CA units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB170CA, 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 P6SMB170CA part is unused and in its original packaging.
Return procedure for P6SMB170CA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB170CA Tags
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