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Taiwan Semiconductor Corporation P6SMB30CA
- Part No.:
- P6SMB30CA
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB30CA.pdf
- Description:
- TVS DIODE 25.6VWM 41.4VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:5,555
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Product details
Overview
P6SMB30CA 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 25.6 V, breakdown voltage range of 28.5–31.5 V at 1 mA test current, clamping voltage of 41.4 V at 15 A peak pulse current, and operates across –55°C to +150°C junction temperature.
For engineers reviewing the P6SMB30CA datasheet, P6SMB30CA pinout, P6SMB30CA application, or P6SMB30CA equivalent, this device is selected for high-energy surge immunity in automotive electronics, industrial power supplies, and consumer adapters where bidirectional clamping, low leakage (<1 µA @ 25.6 V), and ISO 7637-2 Pulse 1/2a/2b/3a/3b compliance are required.
Technical Context
The P6SMB30CA implements a glass-passivated silicon avalanche junction optimized for fast transient response (<1.0 ps rise time from 0 V to VBR min) and stable clamping under repetitive or single-event surges. Its bidirectional configuration enables symmetrical protection without polarity dependency, supporting both positive and negative transients on the same line.
Thermally, it delivers RθJC = 10°C/W and RθJA = 55°C/W, enabling reliable operation at up to 3 W steady-state dissipation and 600 W non-repetitive 10/1000 µs impulse power. The DO-214AA (SMB) package supports automated placement and meets JESD201 Class 2 whisker resistance and UL 94V-0 flammability standards.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 25.6 V - Maximum continuous reverse operating voltage before leakage exceeds 1 µA; defines safe DC rail margin. |
| VBR (min/max) | 28.5 V / 31.5 V at IT = 1 mA - Confirmed breakdown threshold ensures predictable clamping onset across production lot. |
| VC @ IPPM | 41.4 V at 15 A (10/1000 µs) - Peak clamped voltage limits downstream IC stress during standardized surge events. |
| PPPSM | 600 W - Non-repetitive surge power rating per IEC 61000-4-5 and ISO 7637-2; validates protection against severe load dump or ESD-like pulses. |
| IR @ VWM | <1 µA - Ultra-low reverse leakage preserves battery life and minimizes standby power loss in always-on circuits. |
| TJ max | +150°C - Enables deployment in under-hood automotive modules and enclosed industrial power converters without derating. |
| Package | DO-214AA (SMB) - Surface-mount footprint (4.57 × 3.94 mm) compatible with standard reflow profiles and automated pick-and-place. |
Pinout & Package
DO-214AA (SMB) package: molded plastic case with matte tin-plated leads, cathode band marking for unidirectional variants; P6SMB30CA is bidirectional and marked with "LRJ" code - no polarity-dependent terminals.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bidirectional avalanche junction | Either terminal serves as anode or cathode depending on transient polarity; no PCB layout polarity constraint required. |
| Case | Non-electrical mechanical body | Electrically isolated; no thermal or electrical connection to die - heatsinking relies on PCB copper area under pad. |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures long-term stability of VBR and leakage under thermal cycling and humidity exposure per J-STD-020 Level 1. |
| ISO 7637-2 compliance | Validated performance against Pulse 1 (inductive load disconnect), Pulse 2a/2b (battery interruption), and Pulse 3a/3b (switching noise) waveforms. |
| Fast response time | <1.0 ps from 0 V to VBR min - clamps transients before sensitive logic or analog circuitry responds. |
| RoHS & halogen-free | Meets IEC 61249-2-21 and EU RoHS Directive 2011/65/EU - suitable for export-compliant industrial and consumer end equipment. |
| Low-profile SMB package | Height ≤ 2.62 mm - enables use in space-constrained adapters, USB-C PD modules, and slim display power boards. |
Applications
| Automotive Infotainment Power Rail | Industrial SMPS Input Stage |
|---|---|
Use Scenario: Protecting 24 V supply input of head unit MCU and audio codec from load dump and jump-start surges. IC Role / Device Role / Timing Role: Bidirectional TVS clamp placed upstream of DC-DC converter input to limit transient voltage to <41.4 V. Use Value: Prevents latch-up or gate oxide damage in buck controller ICs during ISO 7637-2 Pulse 5a (load dump) events up to 600 W. |
Use Scenario: Safeguarding AC-DC rectified bus in DIN-rail mounted 48 V telecom power supply. IC Role / Device Role / Timing Role: Parallel-connected TVS absorbing line-to-line surges induced by nearby motor switching or lightning-induced coupling. Use Value: Maintains system uptime by limiting bus overvoltage to 41.4 V during 10/1000 µs transients, avoiding crowbar shutdown or capacitor rupture. |
| Consumer Monitor DC Adapter Interface | Medical Grade External Power Supply Output |
Use Scenario: Surge suppression on 19 V output of laptop-style adapter connecting to LCD panel mainboard. IC Role / Device Role / Timing Role: Final-stage TVS on secondary-side DC output to absorb ESD and cable discharge events. Use Value: Eliminates need for additional RC snubbers or varistors while meeting IEC 61000-4-2 Level 4 (15 kV air/8 kV contact) immunity. |
Use Scenario: Overvoltage guard on regulated 5 V/12 V outputs of certified external medical power adapter (IEC 60601-1). IC Role / Device Role / Timing Role: Secondary-side bidirectional clamp ensuring output remains within ±10% of nominal during fault conditions. Use Value: Supports BF-rated isolation integrity by preventing transient propagation into patient-connected circuits without adding creepage distance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ30CA (Bourns) | Same DO-214AA package, identical VWM/VBR/VC specs, but higher typical IR (5 µA @ VWM) vs. P6SMB30CA's <1 µA. | Suitable for cost-sensitive industrial designs where ultra-low leakage is non-critical. | Select SMBJ30CA if BOM consolidation with other SMBJ-series devices is prioritized over leakage optimization. |
| 1.5SMC33CA (ON Semiconductor) | Higher PPPSM (1500 W), larger DO-214AB (SMC) package (7.11 × 6.22 mm), VC = 53.3 V @ 28.3 A - less precise clamping for 30 V systems. | Better suited for high-energy utility meter or solar inverter inputs where physical size allows. | Choose 1.5SMC33CA only when surge energy exceeds 600 W and board space permits SMC footprint. |
Compared with SMBJ30CA and 1.5SMC33CA, the P6SMB30CA offers the optimal balance of low leakage, tight VC tolerance (41.4 V), SMB footprint, and ISO 7637-2 validation - making it preferred for compact, low-power, automotive-qualified designs requiring precise clamping control.
Availability
P6SMB30CA is available at Aetrix Electronics and suitable for automotive infotainment systems, industrial switch-mode power supplies, and consumer monitor adapters requiring stable component supply and full traceability through extended product lifecycle.
Supply support for P6SMB30CA 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, and rectifiers with global AEC-Q200 and IATF 16949 certification.
The P6SMB30CA belongs to TSC's P6SMBx(A) series - engineered specifically for high-reliability, surface-mount transient suppression in automotive and industrial environments where bidirectional clamping and moisture-resistant packaging are mandatory.
FAQ
What is the maximum clamping voltage of the P6SMB30CA under standard surge conditions?
The P6SMB30CA has a maximum clamping voltage (VC) of 41.4 V when subjected to a 10/1000 µs waveform peak pulse current of 15 A. This value is measured per IEC 61000-4-5 and ensures downstream components remain within safe operating voltage limits during standardized surge events. The P6SMB30CA maintains this clamping performance across its full operating temperature range.
Is the P6SMB30CA unidirectional or bidirectional, and how is polarity indicated?
The P6SMB30CA is a bidirectional TVS diode, meaning it provides symmetrical clamping for both positive and negative transients without polarity constraints. Unlike unidirectional variants (e.g., P6SMB30C), the CA suffix explicitly denotes bidirectional functionality. No cathode band marking is used - the device is electrically symmetric, and either terminal may connect to either side of the protected line. The P6SMB30CA marking code is "LRJ".
Does the P6SMB30CA meet automotive surge immunity standards such as ISO 7637-2?
Yes, the P6SMB30CA is explicitly validated to meet ISO 7637-2 requirements for Pulse 1 (inductive load dump), Pulse 2a/2b (battery disconnection/interruption), and Pulse 3a/3b (capacitive coupled switching noise). This compliance is documented in Taiwan Semiconductor's Q2209 datasheet revision and confirmed via standardized waveform testing - making the P6SMB30CA suitable for 12 V and 24 V automotive power networks.
What is the thermal resistance profile of the P6SMB30CA, and how does it affect PCB layout?
The P6SMB30CA has a junction-to-case thermal resistance (RθJC) of 10°C/W and junction-to-ambient resistance (RθJA) of 55°C/W under standard JEDEC test conditions. To maintain reliability at full 600 W surge rating, PCB layout must include ≥25 mm² of 1 oz copper connected to both terminals for heat spreading. The P6SMB30CA's DO-214AA package does not support external heatsinks, so thermal design relies entirely on copper area and airflow.
Can the P6SMB30CA replace older P6KE33CA parts in existing designs?
The P6SMB30CA is not a direct replacement for P6KE33CA due to key differences: P6KE33CA uses DO-15 axial package (not surface-mount), has higher VC (53.3 V), and lower PPPSM (600 W same, but different waveform definition). While both suppress 33 V transients, the P6SMB30CA requires PCB redesign for SMB footprint and offers tighter VBR tolerance and lower leakage. Migration to P6SMB30CA is feasible only with layout revision and validation of clamping behavior under actual system surge conditions.
P6SMB30CA 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):
- 25.6V
- Voltage - Breakdown (Min):
- 28.5V
- Voltage - Clamping (Max) @ Ipp:
- 41.4V
- Current - Peak Pulse (10/1000µs):
- 15A
- 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)
P6SMB30CA FAQ
1.How can I place an order for P6SMB30CA through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB30CA 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 P6SMB30CA reliable?
The price and inventory of P6SMB30CA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB30CA is usually 5 days.
3.What payment methods are accepted for P6SMB30CA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB30CA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB30CA?
P6SMB30CA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB30CA 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 P6SMB30CA?
For technical support, including P6SMB30CA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB30CA requirements.
6.How does Aetrix verify that P6SMB30CA is sourced from the original manufacturer or authorized distributors?
All P6SMB30CA 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 P6SMB30CA meets industry standards.
7.What is the process for return or replacement of P6SMB30CA?
All P6SMB30CA units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB30CA, 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 P6SMB30CA part is unused and in its original packaging.
Return procedure for P6SMB30CA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB30CA Tags
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