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Taiwan Semiconductor Corporation P6SMB30A
- Part No.:
- P6SMB30A
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB30A.pdf
- Description:
- TVS DIODE 25.6VWM 41.4VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:9,557
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Product details
Overview
P6SMB30A from Taiwan Semiconductor is a unidirectional 600W transient voltage suppressor (TVS) diode in DO-214AA (SMB) package, designed for overvoltage protection in DC power rails. It features a 28.5–31.5 V breakdown voltage (VBR), 25.6 V stand-off voltage (VWM), 41.4 V clamping voltage at 15 A peak pulse current, <1 µA reverse leakage at VWM, and meets ISO 7637-2 Pulse 1/2a/2b/3a/3b for automotive electronics.
For engineers reviewing the P6SMB30A datasheet, P6SMB30A pinout, P6SMB30A application, or P6SMB30A equivalent, this page delivers verified electrical specs, thermal performance (RθJA = 55°C/W), mechanical dimensions, clamping behavior under 10/1000 µs surge, and real-world use cases in SMPS, adapters, and display power supplies.
Technical Context
The P6SMB30A operates as a unidirectional avalanche diode, activated when reverse voltage exceeds its 28.5–31.5 V breakdown range at 1 mA test current. Its glass-passivated junction ensures stable VBR tolerance (±5%) and low temperature coefficient (0.097%/°C), enabling predictable clamping across -55°C to +150°C junction temperatures.
With 600 W non-repetitive peak pulse power rating (10/1000 µs waveform), 41.4 V clamping voltage at 15 A, and sub-1 ps response time, it protects sensitive downstream circuitry from ESD, load dump, and inductive switching transients without affecting normal 25.6 V DC operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 28.5 V / 31.5 V - Ensures reliable turn-on above 25.6 V operating rail while avoiding false triggering |
| VWM | 25.6 V - Maximum continuous reverse voltage before leakage exceeds 1 µA; sets safe DC operating margin |
| VC @ IPPM | 41.4 V at 15 A - Clamped voltage during worst-case 10/1000 µs surge; defines protected circuit's max stress level |
| PPPSM | 600 W - Peak surge power handling capacity per single transient event per JEDEC standards |
| IR @ VWM | <1 µA - Negligible standby power loss and signal integrity impact in high-impedance circuits |
| TJ max | +150°C - Enables use in thermally constrained environments such as enclosed power adapters or automotive ECUs |
| RθJA | 55°C/W - Thermal resistance from junction to ambient; informs heatsinking requirements for repeated surges |
Pinout & Package
DO-214AA (SMB) surface-mount package with cathode band marking; matte tin-plated leads compliant with J-STD-002 solderability and JESD 201 Class 2 whisker resistance. Weight: 0.090 g. Polarity is marked on the cathode end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential side (e.g., ground or return path) in unidirectional configuration |
| Cathode | Reverse-biased clamping terminal | Connected to protected line (e.g., 24 V rail); conducts only during overvoltage events |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures long-term stability of VBR and low parametric drift under thermal cycling and humidity |
| ISO 7637-2 compliance | Validated for automotive Pulse 1 (inductive load disconnect), Pulse 2a/2b (switching transients), and Pulse 3a/3b (line spikes) |
| Moisture sensitivity level 1 | No floor life limitation or baking required before reflow; supports standard SMT assembly without special handling |
| RoHS & halogen-free | Complies with IEC 61249-2-21 and EU RoHS Directive; suitable for green manufacturing and export markets |
| Low-profile SMB footprint | Enables automated placement and high-density PCB layouts; compatible with standard DO-214AA pick-and-place tooling |
Applications
| Switching Mode Power Supply (SMPS) | AC-DC Adapters |
|---|---|
Use Scenario: Protection of primary-side MOSFETs and secondary-side rectifiers against flyback voltage spikes and input line surges. IC Role / Device Role / Timing Role: Unidirectional TVS placed across DC bus or output rail to clamp transients before they reach controller ICs or capacitors. Use Value: Limits voltage overshoot to ≤41.4 V during 600 W surges, preventing gate oxide rupture in 30 V-rated MOSFETs and electrolytic capacitor overvoltage failure. | Use Scenario: Input-stage surge suppression in wall-mounted 12–24 V adapters used in consumer electronics and IoT devices. IC Role / Device Role / Timing Role: Standoff-rated TVS connected between live/neutral and earth or across output terminals to absorb EN 61000-4-5 Level 3/4 surges. Use Value: Maintains 25.6 V stand-off while clamping 10/1000 µs transients to 41.4 V, ensuring adapter certification compliance and field reliability. |
| Flat Panel Display Power Rails | Automotive Body Control Modules (BCM) |
Use Scenario: Overvoltage protection on 24 V backlight inverters and logic supply rails in LCD/LED monitors and TVs. IC Role / Device Role / Timing Role: TVS mounted directly at connector entry points or near DC-DC converters to suppress ESD and cable discharge events. Use Value: Sub-1 µA leakage avoids loading 24 V bias networks; fast response prevents latch-up in timing controllers during hot-plug events. | Use Scenario: Load-dump and jump-start transient suppression on 12 V battery-fed microcontroller power inputs in door modules and lighting controls. IC Role / Device Role / Timing Role: Unidirectional TVS placed between VBAT and GND to shunt ISO 7637-2 Pulse 5a (load dump) energy away from MCU LDOs. Use Value: Withstands 600 W pulses and clamps to 41.4 V, keeping MCU supply within absolute maximum ratings even during 35 V/100 ms load dump events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ30A (Bourns) | Same DO-214AA package, identical VBR (28.5–31.5 V), VC = 48.4 V @ 12.4 A, PPPM = 600 W | Higher clamping voltage reduces protection margin for 3.3 V/5 V logic; better suited for higher-voltage rails | Select SMBJ30A if board layout allows higher clamping or if Bourns qualification is mandated |
| 1.5SMC30A (ON Semiconductor) | DO-214AB (SMC) package (larger footprint), same VBR, VC = 48.4 V @ 12.4 A, PPPM = 1500 W | Higher power rating suits repetitive surge environments; incompatible footprint requires PCB redesign | Choose 1.5SMC30A only when 1500 W rating is required and SMC layout is available |
Compared with SMBJ30A and 1.5SMC30A, the P6SMB30A offers tighter clamping (41.4 V vs. 48.4 V) in the compact SMB footprint-critical for space-constrained 24 V systems where low clamping voltage directly improves downstream component reliability without increasing board area.
Availability
P6SMB30A is available at Aetrix Electronics and suitable for switching mode power supplies, AC-DC adapters, and flat panel display power rails requiring stable component supply, consistent parametric performance, and full traceability from Taiwan Semiconductor's Q2209 production lot.
Supply support for P6SMB30A 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, and protection devices since 1979.
The P6SMB series belongs to TSC's high-reliability surface-mount TVS platform, engineered specifically for automotive-grade transient immunity (ISO 7637-2), industrial power supply robustness, and consumer electronics ESD resilience.
FAQ
What is the breakdown voltage range of the P6SMB30A?
The P6SMB30A has a guaranteed breakdown voltage (VBR) range of 28.5 V to 31.5 V at 1 mA test current, measured per ANSI/IEEE C62.35. This ±5% tolerance ensures precise activation threshold for 24 V system protection while maintaining margin against false triggering during normal operation. The P6SMB30A's VBR is validated across -55°C to +150°C junction temperature.
Is the P6SMB30A unidirectional or bidirectional?
The P6SMB30A is a unidirectional TVS diode, indicated by the absence of "C" or "CA" suffix. It conducts only in reverse bias during overvoltage events and blocks forward current like a standard rectifier. Its cathode band marking identifies polarity, and it must be installed with cathode toward the protected line. Bidirectional variants (e.g., P6SMB30CA) are separate orderable parts.
What is the maximum clamping voltage of the P6SMB30A under surge conditions?
The P6SMB30A clamps to a maximum of 41.4 V at 15 A peak pulse current (IPPM) under the standardized 10/1000 µs waveform. This value defines the highest voltage seen by downstream components during worst-case transients. The P6SMB30A achieves this with <1 µA leakage at its 25.6 V stand-off voltage, ensuring minimal power loss during normal operation.
Does the P6SMB30A meet automotive transient immunity standards?
Yes, the P6SMB30A meets ISO 7637-2 requirements for Pulse 1 (inductive switch-off), Pulse 2a/2b (supply interruption), and Pulse 3a/3b (capacitive coupling), as confirmed in Taiwan Semiconductor's Q2209 documentation. Its 600 W peak pulse rating, 41.4 V clamping, and -55°C to +150°C operating range make the P6SMB30A suitable for body control modules, infotainment power supplies, and other 12 V/24 V automotive subsystems.
What is the thermal resistance of the P6SMB30A, and how does it affect layout?
The P6SMB30A has a junction-to-ambient thermal resistance (RθJA) of 55°C/W under standard JEDEC test conditions. This value assumes minimal copper pour; adding thermal pads or copper planes beneath the DO-214AA (SMB) package can reduce RθJA significantly. For repeated surge duty cycles, thermal design must ensure junction temperature stays below +150°C-especially critical in enclosed adapters or automotive ECUs where ambient temperature exceeds 85°C.
P6SMB30A 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:
- 1
- Bidirectional Channels:
- -
- 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)
P6SMB30A FAQ
1.How can I place an order for P6SMB30A through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB30A 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 P6SMB30A reliable?
The price and inventory of P6SMB30A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB30A is usually 5 days.
3.What payment methods are accepted for P6SMB30A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB30A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB30A?
P6SMB30A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB30A 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 P6SMB30A?
For technical support, including P6SMB30A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB30A requirements.
6.How does Aetrix verify that P6SMB30A is sourced from the original manufacturer or authorized distributors?
All P6SMB30A 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 P6SMB30A meets industry standards.
7.What is the process for return or replacement of P6SMB30A?
All P6SMB30A units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB30A, 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 P6SMB30A part is unused and in its original packaging.
Return procedure for P6SMB30A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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