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Taiwan Semiconductor Corporation P6SMB33C
- Part No.:
- P6SMB33C
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB33C.pdf
- Description:
- 600W, 33V, 10%, BIDIRECTIONAL, T
- Quantity:
- Payment:
- Shipping:
Inventory:5,008
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Product details
Overview
P6SMB33C from Taiwan Semiconductor is a bidirectional 600W surface-mount transient voltage suppressor (TVS) diode designed for robust ESD and surge protection in DC power rails and signal lines. It features a standoff voltage of 26.8V, breakdown voltage range of 29.7–36.3V at 1mA, clamping voltage of 47.7V at 13A peak pulse current, and operates across –55°C to +150°C junction temperature.
For engineers reviewing the P6SMB33C datasheet, P6SMB33C pinout, P6SMB33C application, or P6SMB33C equivalent, this device is selected for high-energy transient suppression in automotive power supplies, industrial adapters, and consumer display interfaces where ISO 7637-2 Pulse 1/2a/2b/3a/3b compliance and sub-1μA leakage at VWM are critical design requirements.
Technical Context
The P6SMB33C implements a glass-passivated silicon avalanche junction optimized for fast response (<1.0 ps rise time from 0 V to VBR min) and low clamping ratio (VC/VBR(min) ≈ 1.60). Its unidirectional counterpart uses an anode/cathode marking scheme, while the "C" suffix denotes bidirectional symmetry - electrical characteristics apply identically in both polarities.
Thermally, it delivers RθJC = 10°C/W and RθJA = 55°C/W in the DO-214AA (SMB) package, enabling reliable operation under repetitive surge conditions when mounted on ≥1 cm² copper area. Moisture sensitivity is rated J-STD-020 Level 1, supporting standard reflow without baking.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 26.8 V - Maximum continuous reverse working voltage before significant leakage begins |
| VBR (min/max) | 29.7 V / 36.3 V @ 1 mA - Breakdown threshold range defining turn-on consistency and tolerance stack-up |
| VC @ IPPM | 47.7 V @ 13 A - Clamped voltage during 10/1000 μs surge, limiting downstream component stress |
| PPPSM | 600 W - Peak pulse power handling per single non-repetitive 10/1000 μs waveform |
| IR @ VWM | <1 μA - Reverse leakage ensuring minimal standby power loss in battery-backed systems |
| TJ Range | –55°C to +150°C - Full operational junction temperature range for under-hood or industrial environments |
| Package | DO-214AA (SMB) - Standardized surface-mount outline with 0.090 g mass and J-STD-002 solderable matte tin leads |
Pinout & Package
DO-214AA (SMB) package: molded plastic case with cathode band marking for unidirectional variants; P6SMB33C is bidirectional and marked with "LSJ" code - no polarity designation required. Leads are coplanar, RoHS-compliant, halogen-free, and meet UL 94V-0 flammability rating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Bidirectional avalanche junction terminals | Either terminal accepts positive or negative transients - no PCB polarity constraint; enables single-component placement across AC-coupled or floating rails |
| Case | Non-electrical mechanical body | No thermal or electrical connection to die; thermal path relies solely on leadframe conduction to PCB copper |
Key Features
| Feature | Design Value |
|---|---|
| Fast response time | <1.0 ps - Enables suppression before sensitive ICs experience overvoltage damage during ESD or lightning-induced surges |
| ISO 7637-2 compliance | Pulse 1/2a/2b/3a/3b validated - Certified for automotive load-dump and inductive-switching immunity testing |
| Low leakage | <1 μA @ 26.8 V - Preserves battery life in always-on monitoring circuits and reduces bias error in precision analog front-ends |
| Halogen-free & RoHS | IEC 61249-2-21 compliant - Meets global environmental regulations without compromising surge robustness |
| Automated placement ready | Low-profile DO-214AA footprint - Compatible with standard SMT pick-and-place equipment and reflow profiles |
Applications
| Automotive Power Rail Protection | Industrial SMPS Input Stage |
|---|---|
Use Scenario: Protecting 24V CAN bus power lines against load dump and jump-start transients in passenger vehicles. IC Role / Device Role / Timing Role: Primary clamping element placed directly at connector entry point to shunt >100V spikes within nanoseconds. Use Value: Limits rail voltage to ≤47.7V during 13A 10/1000μs pulses, preventing damage to downstream DC-DC controllers and CAN transceivers. | Use Scenario: Safeguarding input rectifier stage of 48V telecom power supplies exposed to AC line surges and switching noise. IC Role / Device Role / Timing Role: Parallel-connected TVS absorbing repetitive 600W transients between bulk capacitor and bridge rectifier output. Use Value: Maintains <1μA leakage at 26.8V stand-off, avoiding unnecessary power dissipation while clamping to 47.7V under worst-case surge. |
| Consumer Display ESD Shielding | Medical Equipment Signal Line Guarding |
Use Scenario: Protecting HDMI and LVDS interface lines in flat-panel TVs and monitors from human-body-model (HBM) ESD events. IC Role / Device Role / Timing Role: Bidirectional TVS placed adjacent to connectors to clamp ±8kV contact discharge symmetrically. Use Value: Sub-1ps response ensures clamping occurs before ESD pulse couples into differential receivers, preserving signal integrity. | Use Scenario: Isolating analog sensor inputs (e.g., ECG leads) from electrostatic discharge in portable diagnostic devices. IC Role / Device Role / Timing Role: Low-leakage bidirectional suppressor guarding high-impedance amplifier inputs without loading signal paths. Use Value: 26.8V VWM allows safe operation near 24V supply rails while adding <1μA offset current to precision amplifiers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ33CA (Bourns) | Same DO-214AA package, identical 33V nominal breakdown, but higher VC = 53.3V @ 11.3A | Lower peak pulse current rating (11.3A vs. 13A) reduces margin in high-energy surge environments | Select SMBJ33CA only if board layout already accommodates its slightly higher clamping voltage and lower IPPM |
| 1.5SMC33CA (Littelfuse) | Same 33V rating and bidirectional function, but larger DO-214AB (SMC) package (7.11 × 6.22 mm vs. 4.57 × 3.94 mm) | Requires PCB footprint redesign; offers higher PPPM = 1500W but over-spec for most 600W use cases | Choose 1.5SMC33CA only when thermal derating or legacy SMC compatibility drives package selection |
Compared with SMBJ33CA and 1.5SMC33CA, the P6SMB33C provides optimal balance of compact DO-214AA footprint, 13A surge current headroom, and 47.7V clamping - making it preferred for space-constrained automotive and industrial modules requiring precise voltage limiting.
Availability
P6SMB33C is available at Aetrix Electronics and suitable for automotive infotainment power rails, industrial switch-mode power supply inputs, and consumer display interface protection requiring stable component supply and full ISO 7637-2 compliance.
Supply support for P6SMB33C 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, TVS diodes, rectifiers, and MOSFETs with global distribution and AEC-Q200 qualified product lines.
The P6SMB33C belongs to TSC's P6SMB series of 600W SMB-packaged TVS diodes engineered specifically for cost-sensitive, high-volume automotive and industrial surge protection where reliability, JEDEC-standard packaging, and ISO 7637-2 validation are mandatory.
FAQ
What is the maximum clamping voltage of P6SMB33C under standard test conditions?
The P6SMB33C has a maximum clamping voltage (VC) of 47.7 V when subjected to a 10/1000 μs surge waveform at 13 A peak pulse current (IPPM). This value is measured per ANSI/IEEE C62.35 standards and defines the upper voltage limit imposed on protected circuitry during transient events - critical for ensuring downstream ICs remain within absolute maximum ratings.
Is P6SMB33C unidirectional or bidirectional, and how is polarity indicated?
P6SMB33C is a bidirectional TVS diode, as confirmed by the "C" suffix and explicit documentation stating "electrical characteristics apply in both directions." Unlike unidirectional variants (e.g., P6SMB33), it has no cathode band marking and functions identically for positive and negative transients - eliminating polarity orientation concerns during automated assembly.
Does P6SMB33C meet automotive surge immunity standards?
Yes, the P6SMB33C meets ISO 7637-2 requirements for Pulse 1, 2a, 2b, 3a, and 3b waveforms - validating its suitability for 12V and 24V automotive power networks. This certification is explicitly stated in the official Taiwan Semiconductor datasheet (Version Q2209) and supports use in ECUs, infotainment systems, and body control modules without additional external filtering.
What is the junction-to-ambient thermal resistance (RθJA) of P6SMB33C?
The junction-to-ambient thermal resistance (RθJA) of P6SMB33C is 55°C/W, measured under standard JEDEC test conditions (single-layer 1-inch² copper pad). This value determines allowable power dissipation in still air and informs heatsinking requirements - for example, at 25°C ambient, the device can sustain ~2.2W steady-state dissipation before reaching its 150°C maximum junction temperature.
How does the leakage current of P6SMB33C compare to similar 33V TVS diodes?
P6SMB33C specifies maximum reverse leakage current (IR) of <1 μA at its 26.8V stand-off voltage (VWM), matching industry-leading performance for 33V-class TVS diodes. This ultra-low leakage minimizes quiescent power loss in battery-powered systems and avoids signal-path errors in high-impedance analog circuits - a key differentiator versus alternatives with 5–10 μA leakage at comparable VWM.
P6SMB33C 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):
- 26.8V
- Voltage - Breakdown (Min):
- 29.7V
- Voltage - Clamping (Max) @ Ipp:
- 47.7V
- Current - Peak Pulse (10/1000µs):
- 13A
- 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)
P6SMB33C FAQ
1.How can I place an order for P6SMB33C through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB33C 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 P6SMB33C reliable?
The price and inventory of P6SMB33C are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB33C is usually 5 days.
3.What payment methods are accepted for P6SMB33C?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB33C transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB33C?
P6SMB33C orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB33C 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 P6SMB33C?
For technical support, including P6SMB33C datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB33C requirements.
6.How does Aetrix verify that P6SMB33C is sourced from the original manufacturer or authorized distributors?
All P6SMB33C 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 P6SMB33C meets industry standards.
7.What is the process for return or replacement of P6SMB33C?
All P6SMB33C units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB33C, 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 P6SMB33C part is unused and in its original packaging.
Return procedure for P6SMB33C:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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