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Taiwan Semiconductor Corporation P6SMB180CA
- Part No.:
- P6SMB180CA
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB180CA.pdf
- Description:
- TVS DIODE 154VWM 246VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:2,560
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Product details
Overview
P6SMB180CA from Taiwan Semiconductor is a bidirectional 600W surface-mount transient voltage suppressor (TVS) diode designed for robust overvoltage protection in DC power lines and signal paths. It features a standoff voltage of 146 V, breakdown voltage range of 162–198 V at 1 mA test current, clamping voltage of 258 V at 2.4 A peak pulse current, and operates across –55 °C to +150 °C junction temperature. It is commonly deployed in industrial power supplies and automotive infotainment front-end circuits.
For engineers reviewing the P6SMB180CA datasheet, P6SMB180CA pinout, P6SMB180CA application, or P6SMB180CA equivalent, key selection criteria include bidirectional clamping performance under ISO 7637-2 Pulse 1/2a/2b/3a/3b transients, low leakage (<1 µA @ 146 V), DO-214AA (SMB) package compatibility with automated SMT assembly, and thermal resistance (RθJA = 55 °C/W) for board-level power dissipation planning.
Technical Context
The P6SMB180CA employs a glass-passivated silicon junction optimized for fast transient response (<1.0 ps rise time from 0 V to VBR min) and stable clamping under repetitive surge stress. Its bidirectional configuration enables symmetrical protection without polarity dependency, supporting both positive and negative transients on the same line.
It meets ISO 7637-2 compliance for automotive electrical disturbances and is rated for non-repetitive 10/1000 µs waveform surges up to 600 W. Thermal performance is defined by RθJC = 10 °C/W and RθJA = 55 °C/W, enabling reliable operation in compact PCB layouts with limited copper area.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power (10/1000 µs) | 600 W - sustains single high-energy transients per ISO 7637-2 without failure |
| Standoff Voltage (VWM) | 146 V - maximum continuous DC or RMS voltage before significant leakage |
| Breakdown Voltage (VBR) | 162–198 V @ 1 mA - guaranteed conduction onset window for predictable clamping threshold |
| Clamping Voltage (VC @ IPPM) | 258 V @ 2.4 A - limits downstream voltage during surge, defining protected circuit's max stress |
| Junction Temperature Range | –55 °C to +150 °C - supports operation in under-hood automotive and industrial ambient environments |
| Leakage Current @ VWM | <1 µA - negligible standby power loss and minimal impact on high-impedance sensing nodes |
| Package | DO-214AA (SMB) - industry-standard surface-mount outline compatible with J-STD-002 soldering and JESD 201 Class 2 whisker resistance |
Pinout & Package
Package: DO-214AA (SMB), molded plastic case with matte tin-plated leads; polarity indicated by cathode band (bidirectional device has no functional polarity marking but retains physical band for orientation consistency).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bidirectional surge path terminal | Either end connects to protected line; identical electrical behavior in both directions |
| Cathode band (marking) | Manufacturing orientation indicator | No functional polarity-used only for consistent placement alignment during automated assembly |
Key Features
| Feature | Design Value |
|---|---|
| ISO 7637-2 compliance | Validated for Pulse 1 (inductive load dump), Pulse 2a/2b (battery disconnect/relay bounce), and Pulse 3a/3b (capacitive coupling) waveforms |
| Fast response time | <1.0 ps rise time ensures clamping activation before transient energy couples into sensitive ICs |
| Low moisture sensitivity | MSL Level 1 (per J-STD-020) - no baking required prior to reflow, simplifying manufacturing flow |
| Halogen-free construction | Complies with IEC 61249-2-21 - meets environmental requirements for RoHS-compliant industrial and automotive systems |
| Stable temperature coefficient | 0.108 %/°C VBR drift - enables predictable clamping across full operating temperature range |
Applications
| Industrial SMPS Input Protection | Automotive Infotainment Power Rail |
|---|---|
Use Scenario: 24 V DC input stage of programmable logic controller (PLC) power supply exposed to load dump and inductive switching noise. IC Role / Device Role / Timing Role: Primary overvoltage clamp protecting upstream rectifier and downstream PWM controller ICs from >100 V transients. Use Value: Limits transient voltage to ≤258 V, preventing damage to 30 V-rated MOSFETs and ensuring uninterrupted operation during factory equipment switching events. |
Use Scenario: 12 V power feed to head unit display module subject to ISO 7637-2 Pulse 2a (battery disconnection) and Pulse 5a (load dump). IC Role / Device Role / Timing Role: Bidirectional TVS placed between fused battery rail and DC-DC converter input to absorb reverse and forward polarity surges. Use Value: Withstands 600 W pulses while maintaining <1 µA leakage at 146 V, preserving low-quiescent-current sleep mode integrity in always-on vehicle systems. |
| Medical Equipment AC/DC Adapter | Telecom Remote Radio Unit (RRU) |
Use Scenario: Secondary-side output of medical-grade AC/DC adapter supplying isolated 24 V to patient-monitoring sensors. IC Role / Device Role / Timing Role: Final-stage transient suppressor safeguarding analog front-end ICs against ESD and fast-line transients introduced via long sensor cables. Use Value: Clamps 1 kV ESD events (IEC 61000-4-2) within 1 ps, limiting induced voltage to <260 V and preserving ±0.1% measurement accuracy in critical diagnostics. |
Use Scenario: DC power input (–48 V) of outdoor base station RRU exposed to lightning-induced surges on telecom tower feeds. IC Role / Device Role / Timing Role: First-line bidirectional protector on –48 V return path, coordinating with GDT and MOV stages in multi-tiered surge architecture. Use Value: Provides precise 146 V standoff and 258 V clamping to avoid false triggering of upstream crowbar circuits while handling 2.4 A peak pulses per Telcordia GR-1089. |
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 (Bourns) | Same DO-214AA package, identical 146 V VWM, 258 V VC, but higher typical leakage (≤5 µA @ VWM) | Less suitable for ultra-low-power standby circuits where sub-1 µA leakage is mandatory | Select P6SMB180CA when leakage-critical designs require <1 µA at 146 V |
| 1.5SMC180CA (ON Semiconductor) | Higher RθJA (65 °C/W vs. 55 °C/W), same 600 W rating but lower thermal margin in dense layouts | May require additional copper pour or airflow in thermally constrained telecom modules | Select P6SMB180CA for better thermal performance in space-constrained industrial PCBs |
Compared with SMBJ180CA and 1.5SMC180CA, the P6SMB180CA offers tighter leakage control and superior thermal resistance-critical for high-reliability, low-power, and thermally dense applications such as automotive body control modules and portable medical devices.
Availability
P6SMB180CA is available at Aetrix Electronics and suitable for industrial SMPS input protection, automotive infotainment power rails, and telecom remote radio units requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for P6SMB180CA 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, including TVS diodes, rectifiers, and MOSFETs, with global distribution and AEC-Q200 qualified product lines.
The P6SMB series was developed for high-reliability, surface-mount transient suppression in automotive, industrial, and telecom infrastructure-emphasizing ISO 7637-2 compliance, low leakage, and MSL Level 1 manufacturability.
FAQ
What is the maximum clamping voltage of the P6SMB180CA under standard test conditions?
The P6SMB180CA has a maximum clamping voltage (VC) of 258 V when subjected to a 10/1000 µs surge waveform at its rated peak pulse current of 2.4 A. This value is measured per ANSI/IEEE C62.35 and defines the upper voltage limit imposed on protected circuitry during transient events, ensuring downstream components remain within safe operating voltage margins.
Is the P6SMB180CA unidirectional or bidirectional, and how does that affect circuit design?
The P6SMB180CA is a bidirectional TVS diode, indicated by the "CA" suffix. It provides symmetrical clamping for both positive and negative transients on the same line, eliminating the need for polarity-aware placement. Unlike unidirectional variants, it requires no anode/cathode orientation check during layout or assembly-simplifying design and reducing risk of misapplication in AC-coupled or floating-ground systems.
Does the P6SMB180CA meet automotive transient immunity standards?
Yes, the P6SMB180CA is explicitly rated to meet ISO 7637-2 for automotive electrical disturbances, covering Pulse 1 (inductive load dump), Pulse 2a/2b (battery interruption), and Pulse 3a/3b (capacitive coupling). Its 600 W peak pulse power rating and 258 V clamping voltage ensure robust protection in 12 V and 24 V vehicle subsystems, including infotainment, ADAS camera modules, and body control units.
What is the thermal resistance profile of the P6SMB180CA, and why does it matter for PCB layout?
The P6SMB180CA has a junction-to-ambient thermal resistance (RθJA) of 55 °C/W and junction-to-case (RθJC) of 10 °C/W. These values directly impact how much temperature rise occurs during surge events: for example, a 600 W transient-even if brief-can cause rapid localized heating. Lower RθJA allows safer operation with minimal copper area, making the P6SMB180CA preferable in compact, high-density boards where thermal relief is constrained.
Can the P6SMB180CA be used in place of the P6SMB180A, and what is the key difference?
No-the P6SMB180CA and P6SMB180A are not interchangeable. The "CA" suffix denotes bidirectional operation, while "A" indicates unidirectional. The P6SMB180A has a cathode band and conducts only in reverse bias; using it in a bidirectional application would leave one polarity unprotected. Always verify suffix meaning: P6SMB180CA must be selected specifically when symmetrical surge suppression is required.
P6SMB180CA 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):
- 154V
- Voltage - Breakdown (Min):
- 171V
- Voltage - Clamping (Max) @ Ipp:
- 246V
- Current - Peak Pulse (10/1000µs):
- 2.5A
- 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)
P6SMB180CA FAQ
1.How can I place an order for P6SMB180CA through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB180CA 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 P6SMB180CA reliable?
The price and inventory of P6SMB180CA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB180CA is usually 5 days.
3.What payment methods are accepted for P6SMB180CA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB180CA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB180CA?
P6SMB180CA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB180CA 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 P6SMB180CA?
For technical support, including P6SMB180CA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB180CA requirements.
6.How does Aetrix verify that P6SMB180CA is sourced from the original manufacturer or authorized distributors?
All P6SMB180CA 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 P6SMB180CA meets industry standards.
7.What is the process for return or replacement of P6SMB180CA?
All P6SMB180CA units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB180CA, 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 P6SMB180CA part is unused and in its original packaging.
Return procedure for P6SMB180CA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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