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Taiwan Semiconductor Corporation P6SMB180C
- Part No.:
- P6SMB180C
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB180C.pdf
- Description:
- 600W, 180V, 10%, BIDIRECTIONAL,
- Quantity:
- Payment:
- Shipping:
Inventory:2,177
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Product details
Overview
P6SMB180C from Taiwan Semiconductor is a bidirectional 600W surface-mount transient voltage suppressor (TVS) diode with a standoff voltage of 146 V, breakdown voltage range of 162–198 V, and clamping voltage of 258 V at 2.4 A peak pulse current. It protects DC power rails and signal lines in switching mode power supplies, adapters, and display electronics against ESD and surge events per ISO 7637-2 Pulse 1/2a/2b/3a/3b.
For engineers reviewing the P6SMB180C datasheet, P6SMB180C pinout, P6SMB180C application, or P6SMB180C equivalent, this device is selected for robust overvoltage protection where low leakage (<1 µA), fast response (<1.0 ps), and DO-214AA (SMB) package compatibility with automated assembly are critical design requirements.
Technical Context
The P6SMB180C is a unidirectional/bidirectional TVS diode configured as a single silicon junction with glass passivation, enabling stable clamping under repetitive transients. Its 10/1000 µs waveform rating supports automotive load-dump and ISO 7637-2 compliance, while its 150 °C maximum junction temperature and JESD201 Class 2 whisker resistance support industrial and automotive ambient conditions.
Designed for bidirectional operation (denoted by "C" suffix), it exhibits symmetrical electrical characteristics in both polarities - identical VBR, VWM, IPPM, and VC values in forward and reverse directions - eliminating polarity-dependent layout constraints in AC-coupled or floating bus protection.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 146 V - Maximum continuous reverse working voltage before clamping begins; defines safe operating margin below breakdown. |
| VBR (min/max) | 162 V / 198 V - Breakdown voltage range at 1 mA test current; ensures reliable turn-on across process and temperature variation. |
| VC @ IPPM | 258 V at 2.4 A - Clamping voltage during 10/1000 µs surge; limits downstream component stress to ≤258 V. |
| PPPSM | 600 W - Peak pulse power handling capability; sustains high-energy transients without failure. |
| IR @ VWM | <1 µA - Reverse leakage at rated standoff voltage; minimizes standby power loss in high-impedance circuits. |
| TJ max | 150 °C - Maximum junction temperature; enables operation in enclosed or thermally constrained environments. |
| Package | DO-214AA (SMB) - Surface-mount outline with 0.090 g mass, UL 94V-0 molding, and matte tin-plated leads for J-STD-002 solderability. |
Pinout & Package
DO-214AA (SMB) package: molded plastic case with cathode band marking; dual axial terminals; 4.57 mm × 3.94 mm footprint; 2.29 mm height; RoHS-compliant and halogen-free per IEC 61249-2-21.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias | Connected to lower-potential side of protected line; forms symmetrical clamping path with cathode in bidirectional mode. |
| Cathode | Current exit terminal in forward bias; marked with band | Connected to higher-potential side; band orientation identifies polarity for unidirectional variants; irrelevant for P6SMB180C due to bidirectional symmetry. |
Key Features
| Feature | Design Value |
|---|---|
| ISO 7637-2 compliance | Validated for Pulse 1 (inductive switch-off), Pulse 2a/2b (battery disconnect/load dump), and Pulse 3a/3b (capacitive coupling), enabling drop-in use in automotive ECUs and infotainment systems. |
| Fast response time | <1.0 ps rise time from 0 V to VBR(min) - limits transient energy delivery before clamping, protecting sensitive downstream ICs like microcontrollers and ADCs. |
| Low moisture sensitivity | MSL Level 1 per J-STD-020 - allows unlimited floor life and standard reflow without baking, reducing manufacturing overhead. |
| Thermal performance | RθJC = 10 °C/W and RθJA = 55 °C/W - enables effective heat dissipation in PCB layouts with minimal copper area, supporting compact power supply designs. |
| Stable temperature coefficient | 0.108 %/°C VBR drift - ensures predictable clamping threshold across -55 °C to +150 °C, critical for engine bay or industrial control applications. |
Applications
| Switching Mode Power Supply (SMPS) | TV Power Input Protection |
|---|---|
Use Scenario: Installed across primary-side bulk capacitor or secondary-side DC output rail to absorb line surges and MOSFET switching spikes. IC Role / Device Role / Timing Role: Voltage-clamping protector that diverts transient energy to ground before it reaches PWM controllers or output rectifiers. Use Value: Limits peak rail voltage to 258 V during 600 W transients, preventing overvoltage shutdown or catastrophic failure of 400 V-rated electrolytic capacitors and 600 V MOSFETs. | Use Scenario: Placed at AC input stage or main DC bus to suppress lightning-induced surges and EFT bursts entering via mains or external interfaces. IC Role / Device Role / Timing Role: Bidirectional transient suppressor guarding front-end bridge rectifier and PFC controller inputs. Use Value: Withstands repeated 10/1000 µs pulses up to 2.4 A while maintaining <1 µA leakage at 146 V, preserving standby efficiency and ensuring long-term reliability in consumer-grade TVs. |
| Monitor Power Board | Industrial Adapter Interface |
Use Scenario: Mounted on LVDS or USB-C power delivery lines to protect display timing controllers and level shifters from ESD and hot-plug transients. IC Role / Device Role / Timing Role: Fast-acting clamp on low-voltage auxiliary rails (e.g., 12 V, 19 V) where low capacitance and minimal leakage are essential. Use Value: Junction capacitance <100 pF at VWM avoids signal integrity degradation on high-speed video links, while 258 V clamping prevents latch-up in 3.3 V/5 V logic domains. | Use Scenario: Integrated into universal AC/DC adapter PCBs to meet IEC/EN 61000-4-2/4-4/4-5 immunity requirements for medical and industrial end equipment. IC Role / Device Role / Timing Role: Primary-level surge suppression element compliant with ISO 7637-2 and capable of surviving >1000 surges at rated power. Use Value: Enables CE/UKCA certification without additional MOV or GDT stages, reducing BOM count and board space while maintaining 150 °C thermal margin under continuous 85 °C ambient. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ180CA | Same DO-214AA package, 600 W rating, but VBR = 182–201 V and VC = 259 V at 2.4 A; slightly tighter VBR tolerance. | Identical ISO 7637-2 compliance and thermal specs; preferred where tighter breakdown distribution improves margin control in high-volume SMPS designs. | Select SMBJ180CA when statistical VBR clustering matters more than absolute cost; P6SMB180C offers broader VBR range for legacy design reuse. |
| 1.5SMC180CA | Higher 1500 W rating, same VWM/VBR range, but larger DO-214AB (SMC) package (7.11 mm × 6.22 mm); RθJA = 35 °C/W. | Used where higher single-pulse energy absorption is required (e.g., heavy industrial motor drives); not suitable for space-constrained SMB footprints. | Choose 1.5SMC180CA only if surge energy exceeds 600 W; otherwise, P6SMB180C provides optimal size/power balance for consumer and commercial adapters. |
Compared with SMBJ180CA and 1.5SMC180CA, the P6SMB180C delivers identical bidirectional protection in the smallest DO-214AA footprint, with verified 600 W capability and MSL Level 1 handling - making it ideal for cost-sensitive, high-density applications where thermal derating and automated placement are prioritized over ultra-tight VBR tolerance or extreme energy capacity.
Availability
P6SMB180C is available at Aetrix Electronics and suitable for switching mode power supplies, TV power boards, and industrial adapters requiring stable component supply, consistent parametric performance, and full traceability across production batches.
Supply support for P6SMB180C 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, MOSFETs, and power management devices since 1979.
The P6SMB series belongs to TSC's high-reliability surface-mount TVS portfolio, engineered specifically for automotive, industrial, and consumer power conversion systems needing ISO 7637-2 compliance, low leakage, and automated assembly compatibility.
FAQ
What is the clamping voltage of the P6SMB180C under a 10/1000 µs surge?
The P6SMB180C has a maximum clamping voltage (VC) of 258 V at 2.4 A peak pulse current (IPPM) under the standardized 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and guarantees that downstream components experience no more than 258 V during surge events - a critical parameter for selecting compatible 300 V or higher-rated capacitors and MOSFETs in the protected circuit. The P6SMB180C maintains this clamping performance across its full operating temperature range.
Is the P6SMB180C unidirectional or bidirectional, and how is polarity identified?
The P6SMB180C is a bidirectional TVS diode, indicated by the "C" suffix per TSC's ordering convention. Unlike unidirectional variants (e.g., P6SMB180A), it provides symmetrical clamping in both forward and reverse directions - meaning VBR, VWM, and VC are identical regardless of voltage polarity. No cathode band is functionally required; however, the physical marking follows DO-214AA conventions and does not affect electrical behavior. This makes the P6SMB180C ideal for AC-coupled or floating-bus applications such as Ethernet PHY protection or differential power rails.
What is the maximum steady-state power dissipation of the P6SMB180C at room temperature?
The P6SMB180C has a steady-state power dissipation (Ptot) of 3 W at ambient temperature (TA) = 25 °C. This rating applies only to continuous DC or low-frequency reverse-bias conditions - not transient surges. In normal operation, leakage current remains below 1 µA at 146 V, resulting in negligible static power loss (<0.15 mW). The 3 W limit becomes relevant only in sustained overvoltage fault conditions; proper system-level fault detection should clear such faults before thermal runaway occurs. The P6SMB180C's RθJA of 55 °C/W supports this rating with adequate PCB copper area.
Does the P6SMB180C meet automotive surge immunity standards?
Yes, the P6SMB180C meets ISO 7637-2 requirements for Pulse 1 (inductive load dump), Pulse 2a/2b (battery disconnection), and Pulse 3a/3b (capacitive coupling), as explicitly stated in TSC's datasheet. Its 600 W peak pulse power rating, 258 V clamping voltage, and 150 °C junction temperature rating make it suitable for front-end protection in automotive body control modules, infotainment head units, and ADAS camera power supplies. While not AEC-Q200 qualified itself, the P6SMB180C is widely deployed in automotive-adjacent applications where full qualification is not mandated but robust surge performance is essential.
What is the moisture sensitivity level (MSL) and reflow profile compatibility of the P6SMB180C?
The P6SMB180C is rated MSL Level 1 per J-STD-020, meaning it has unlimited floor life and may be subjected to standard lead-free reflow profiles (e.g., JEDEC J-STD-020 Rev D, peak 260 °C) without pre-baking. Its matte tin-plated leads comply with J-STD-002 for solderability, and the UL 94V-0 molding compound withstands multiple reflow cycles. This eliminates moisture-related popcorning risks and simplifies SMT line integration - a key advantage over higher-MSL alternatives. For high-volume production, the P6SMB180C supports 3,000-piece tape-and-reel packaging compatible with pick-and-place equipment.
P6SMB180C 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):
- 146V
- Voltage - Breakdown (Min):
- 162V
- Voltage - Clamping (Max) @ Ipp:
- 258V
- Current - Peak Pulse (10/1000µs):
- 2.4A
- 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)
P6SMB180C FAQ
1.How can I place an order for P6SMB180C through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB180C 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 P6SMB180C reliable?
The price and inventory of P6SMB180C are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB180C is usually 5 days.
3.What payment methods are accepted for P6SMB180C?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB180C transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB180C?
P6SMB180C orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB180C 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 P6SMB180C?
For technical support, including P6SMB180C datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB180C requirements.
6.How does Aetrix verify that P6SMB180C is sourced from the original manufacturer or authorized distributors?
All P6SMB180C 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 P6SMB180C meets industry standards.
7.What is the process for return or replacement of P6SMB180C?
All P6SMB180C units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB180C, 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 P6SMB180C part is unused and in its original packaging.
Return procedure for P6SMB180C:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB180C Tags
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