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Taiwan Semiconductor Corporation P6SMB120CA
- Part No.:
- P6SMB120CA
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB120CA.pdf
- Description:
- TVS DIODE 102VWM 165VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:7,577
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Product details
Overview
P6SMB120CA from Taiwan Semiconductor is a bidirectional 600W surface-mount transient voltage suppressor (TVS) diode designed for robust overvoltage protection in DC power rails and signal lines. It features a standoff voltage of 97.2 V, breakdown voltage range of 108–132 V at 1 mA, clamping voltage of 173 V at 3.6 A (10/1000 µs), and operates across –55 °C to +150 °C junction temperature.
For engineers reviewing the P6SMB120CA datasheet, P6SMB120CA pinout, P6SMB120CA application, or P6SMB120CA equivalent, key selection criteria include its DO-214AA (SMB) package compatibility, bidirectional surge handling per ISO 7637-2 Pulse 1/2a/2b/3a/3b, sub-1 ps response time, and <1 µA leakage above 102 V.
Technical Context
The P6SMB120CA implements a glass-passivated silicon junction optimized for fast transient suppression with low capacitance (<100 pF at 0 V, typical). Its bidirectional configuration enables symmetrical clamping in AC-coupled or floating systems without polarity constraints.
Thermal performance is defined by RθJC = 10 °C/W and RθJA = 55 °C/W, supporting reliable operation under repetitive surge conditions when mounted on standard FR-4 PCBs with adequate copper area. The device meets JESD201 Class 2 whisker resistance and J-STD-020 Moisture Sensitivity Level 1.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 97.2 V - Maximum continuous reverse operating voltage before significant leakage begins |
| VBR min/max | 108–132 V @ 1 mA - Confirmed breakdown threshold ensuring predictable turn-on during transients |
| VC @ IPPM | 173 V @ 3.6 A (10/1000 µs) - Clamped voltage limiting downstream circuit stress during worst-case surge |
| PPPSM | 600 W - Peak pulse power rating defining single-event surge energy absorption capability |
| IR @ VWM | <1 µA - Ultra-low leakage preserving efficiency in high-impedance bias networks |
| TJ max | +150 °C - Maximum junction temperature enabling use in thermally demanding industrial environments |
| Response time | <1.0 ps - Sub-picosecond junction response ensures clamping before transient propagation into protected ICs |
Pinout & Package
DO-214AA (SMB) surface-mount package: 2-terminal unidirectional/bidirectional configuration with cathode band marking for unidirectional variants; P6SMB120CA uses symmetric bidirectional marking (no cathode band), matte tin-plated leads, UL 94V-0 molding compound, and 0.090 g mass.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Bidirectional surge path | Either terminal accepts positive or negative transient polarity - no orientation required during placement |
| Case | Thermal conduction path | Exposed metal slug provides primary thermal path to PCB copper; requires soldered thermal pad for full RθJA spec compliance |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable VBR and low leakage over lifetime and temperature cycling |
| ISO 7637-2 compliance | Validated immunity to automotive load-dump and inductive-switching pulses (Pulse 1/2a/2b/3a/3b) |
| Moisture sensitivity level 1 | Zero bake requirement before reflow - compatible with standard SMT assembly lines |
| Halogen-free & RoHS | Meets IEC 61249-2-21 and EU RoHS Directive for environmentally constrained applications |
| Fast response <1 ps | Clamps before most microcontroller I/O structures experience damage from ESD or EFT events |
Applications
| Switching Mode Power Supply (SMPS) | Automotive Infotainment System |
|---|---|
Use Scenario: Protection of 48 V input stage against load dump and alternator ripple in industrial SMPS units. IC Role / Device Role / Timing Role: Primary overvoltage clamp placed across bulk input capacitor to limit rail excursions during 120 V/100 ms transients. Use Value: Withstands 600 W peak surges while maintaining 97.2 V standoff - prevents upstream MOSFET avalanche and downstream controller latch-up. | Use Scenario: Surge suppression on USB 2.0 and CAN FD data lines exposed to ESD and conducted noise in vehicle head units. IC Role / Device Role / Timing Role: Bidirectional TVS placed differential across signal pairs to clamp ±15 kV contact ESD without polarity concern. Use Value: Sub-100 pF junction capacitance avoids signal integrity degradation at 480 Mbps USB speeds; clamps to ≤173 V within 1 ps. |
| AC-DC Adapter Output Rail | Industrial Motor Drive Control Board |
Use Scenario: Secondary-side overvoltage protection on 24 V output of universal-input wall adapters subject to line surges and hot-plug transients. IC Role / Device Role / Timing Role: Standoff-rated TVS connected between output and ground to absorb 6 kV ring-wave surges per IEC 61000-4-5. Use Value: 173 V clamping voltage ensures downstream 30 V-rated DC-DC converters remain within absolute maximum ratings during surge events. | Use Scenario: Protection of isolated gate driver supply rails (15 V) against cross-talk-induced spikes from IGBT switching in servo drives. IC Role / Device Role / Timing Role: Localized TVS placed at gate driver IC VDD pin to suppress <100 ns ringing transients. Use Value: 1 ps response captures fast edge-induced spikes before they propagate into sensitive CMOS inputs; <1 µA leakage avoids quiescent current penalty. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ120CA (Bourns) | Same DO-214AA package, identical 108–132 V VBR, but rated at 600 W with 173 V VC; slightly higher RθJA (60 °C/W vs. 55 °C/W) | Validated for same ISO 7637-2 pulses; lower thermal margin in high-density layouts | Select SMBJ120CA if Bourns qualification is mandated; verify board-level thermal relief for sustained surge duty. |
| 1.5KE120CA (Littelfuse) | Through-hole DO-15 package, same electrical specs, but 1.5 kW peak rating - over-specified power with larger footprint and manual assembly requirement | Not suitable for automated SMT lines; used where legacy through-hole design or higher single-pulse margin is needed | Choose 1.5KE120CA only for retrofit or prototyping where DO-15 is already routed; avoid for new SMT designs. |
Compared with SMBJ120CA and 1.5KE120CA, the P6SMB120CA delivers identical clamping performance in a smaller, fully automated DO-214AA package with superior thermal resistance - making it optimal for space-constrained, high-volume industrial and automotive PCBs.
Availability
P6SMB120CA is available at Aetrix Electronics and suitable for switching mode power supplies, automotive infotainment systems, and industrial motor drive control boards requiring stable component supply and consistent surge performance across production batches.
Supply support for P6SMB120CA 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-grade transient immunity (ISO 7637-2) and industrial power rail protection - emphasizing low leakage, tight VBR tolerance, and robust thermal performance in compact SMB packages.
FAQ
What is the clamping voltage of the P6SMB120CA under a 10/1000 µs surge?
The P6SMB120CA has a maximum clamping voltage (VC) of 173 V when subjected to a 10/1000 µs waveform at its rated peak pulse current of 3.6 A. This value is measured per ANSI/IEEE C62.35 and guarantees that protected circuits see no more than 173 V during standardized surge events - critical for safeguarding 200 V-rated capacitors and 175 V MOSFETs downstream of the P6SMB120CA.
Is the P6SMB120CA unidirectional or bidirectional?
The P6SMB120CA is a bidirectional TVS diode, indicated by the "CA" suffix. It provides symmetrical clamping for both positive and negative transients without polarity sensitivity - unlike unidirectional "A"-suffix variants. This makes the P6SMB120CA ideal for AC-coupled interfaces, differential data lines, and floating power domains where voltage polarity reversal is possible.
Does the P6SMB120CA meet automotive surge standards?
Yes, the P6SMB120CA meets ISO 7637-2 requirements for Pulse 1 (inductive load disconnect), Pulse 2a/2b (switching transients), and Pulse 3a/3b (capacitive coupling), as confirmed in Taiwan Semiconductor's official documentation. Its 600 W rating, fast response, and specified clamping behavior make it suitable for 12 V and 24 V automotive subsystems including body control modules and infotainment power rails.
What is the maximum leakage current of the P6SMB120CA at its standoff voltage?
The P6SMB120CA exhibits a maximum reverse leakage current (IR) of 1 µA when biased at its standoff voltage (VWM) of 97.2 V. This ultra-low leakage preserves system efficiency in high-impedance monitoring circuits and battery-powered applications - a key advantage over older-generation TVS diodes with leakage in the 10–100 µA range at similar voltages.
Can the P6SMB120CA be used in place of the P6SMB120A?
No - the P6SMB120CA and P6SMB120A are functionally distinct: P6SMB120A is unidirectional (cathode-marked), while P6SMB120CA is bidirectional (no cathode band). Substituting one for the other risks incorrect clamping behavior in AC or bipolar circuits. Always verify polarity requirements and consult the Taiwan Semiconductor datasheet before replacement - the P6SMB120CA must only replace other "CA"-suffixed parts.
P6SMB120CA 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):
- 102V
- Voltage - Breakdown (Min):
- 114V
- Voltage - Clamping (Max) @ Ipp:
- 165V
- Current - Peak Pulse (10/1000µs):
- 3.8A
- 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)
P6SMB120CA FAQ
1.How can I place an order for P6SMB120CA through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB120CA 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 P6SMB120CA reliable?
The price and inventory of P6SMB120CA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB120CA is usually 5 days.
3.What payment methods are accepted for P6SMB120CA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB120CA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB120CA?
P6SMB120CA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB120CA 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 P6SMB120CA?
For technical support, including P6SMB120CA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB120CA requirements.
6.How does Aetrix verify that P6SMB120CA is sourced from the original manufacturer or authorized distributors?
All P6SMB120CA 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 P6SMB120CA meets industry standards.
7.What is the process for return or replacement of P6SMB120CA?
All P6SMB120CA units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB120CA, 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 P6SMB120CA part is unused and in its original packaging.
Return procedure for P6SMB120CA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB120CA Tags
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