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Taiwan Semiconductor Corporation P6SMB39C
- Part No.:
- P6SMB39C
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB39C.pdf
- Description:
- 600W, 39V, 10%, BIDIRECTIONAL, T
- Quantity:
- Payment:
- Shipping:
Inventory:7,546
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Product details
Overview
P6SMB39C 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 31.6 V, breakdown voltage range of 35.1–42.9 V at 1 mA, clamping voltage of 56.4 V at 11.1 A peak pulse current, and operates across –55°C to +150°C junction temperature.
For engineers reviewing the P6SMB39C datasheet, P6SMB39C pinout, P6SMB39C application, or P6SMB39C equivalent, this device is selected for fast-response surge suppression in automotive infotainment power supplies, industrial SMPS input stages, and USB-C port ESD/EMI front-end protection where sub-1 ps response time and ISO 7637-2 Pulse 1/2a/2b/3a/3b compliance are required.
Technical Context
The P6SMB39C implements a glass-passivated silicon avalanche junction optimized for unidirectional or bidirectional transient clamping without external polarity constraints. Its DO-214AA (SMB) package enables automated placement while maintaining 10 °C/W junction-to-case thermal resistance and 55 °C/W junction-to-ambient rating.
It delivers 600 W non-repetitive peak pulse power under 10/1000 μs waveform, with <1 μA reverse leakage at 31.6 V and a temperature coefficient of VBR at 0.100 %/°C - enabling stable clamping performance across wide ambient ranges in automotive and industrial environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 31.6 V - Maximum continuous reverse operating voltage before significant leakage begins; defines safe DC rail margin for 33 V nominal systems. |
| VBR (min/max) | 35.1 V / 42.9 V at IT = 1 mA - Confirmed avalanche onset range; ensures reliable triggering above system transients but below IC damage thresholds. |
| VC @ IPPM | 56.4 V at 11.1 A - Clamped voltage during 10/1000 μs surge; limits downstream component stress to ≤56.4 V under worst-case 600 W transient. |
| PPPSM | 600 W - Peak pulse power handling per single event; supports high-energy surges per ISO 7637-2 without degradation. |
| IR @ VWM | <1 μA - Ultra-low leakage at rated standoff; prevents measurable power loss or bias shift in low-current sensor or control circuits. |
| TJ max | +150 °C - Enables operation in under-hood automotive or enclosed industrial enclosures without derating. |
Pinout & Package
Package: DO-214AA (SMB), surface-mount, bi-directional configuration with cathode band omitted (symmetrical terminals). Matte tin-plated leads, RoHS and halogen-free compliant, moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode | Bidirectional avalanche junction terminals | Identical electrical behavior in both directions; no polarity marking required - simplifies PCB layout and eliminates orientation errors during assembly. |
Key Features
| Feature | Design Value |
|---|---|
| Clamping speed | <1.0 ps response from 0 V to VBR(min) - mitigates nanosecond-scale ESD and lightning-induced transients before sensitive logic or analog circuitry reacts. |
| ISO 7637-2 compliance | Validated for Pulse 1, 2a, 2b, 3a, and 3b - meets automotive OEM requirements for load dump and inductive switching immunity without additional filtering. |
| Glass passivation | Stable junction interface with reduced surface leakage and long-term reliability under humidity and thermal cycling. |
| Low profile SMB package | 2.79 mm height - fits space-constrained layouts in portable electronics and multi-layer automotive ECUs while supporting automated SMT placement. |
Applications
| Automotive Infotainment Power Rail | Industrial SMPS Input Stage |
|---|---|
Use Scenario: Protecting 33 V supply rail feeding head unit MCU, display driver, and audio codec against load dump and alternator ripple. IC Role / Device Role / Timing Role: Bidirectional TVS clamp placed directly at DC input connector, upstream of bulk capacitor and primary controller. Use Value: Limits transient excursions to ≤56.4 V during 600 W pulses, preventing latch-up or gate oxide damage in 3.3 V/5 V logic powered from same rail. |
Use Scenario: Safeguarding AC-DC converter front-end rectifier output against line surges and back-EMF from nearby motor drives. IC Role / Device Role / Timing Role: Parallel-connected TVS across bulk storage capacitor, absorbing energy before it reaches PWM controller IC. Use Value: Withstands 11.1 A peak pulse at 56.4 V clamping, reducing need for oversized MOVs and enabling smaller, cooler-running designs. |
| USB-C Port ESD Protection | Telecom Line Interface |
Use Scenario: Secondary-level surge suppression on VBUS line of USB-C receptacle, complementing integrated ESD diodes in Type-C controller. IC Role / Device Role / Timing Role: Standoff-rated TVS placed between connector and port controller's internal protection network. Use Value: 31.6 V VWM allows full 20 V PD negotiation range while clamping >35 V transients - avoids false triggering during normal operation. |
Use Scenario: Overvoltage protection on 48 V phantom-powered telecom line interface cards exposed to lightning-induced surges. IC Role / Device Role / Timing Role: Primary surge shunt on line-side transformer secondary, coordinated with gas discharge tube (GDT) upstream. Use Value: 600 W rating handles multi-kV induced surges per ITU-T K.20/K.21; bidirectional symmetry matches balanced line signaling requirements. |
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) | VWM = 33 V, VC = 53.3 V @ 11.3 A, same DO-214AA package | Lower clamping voltage by 3.1 V - better for 3.3 V logic protection but tighter margin vs. 33 V nominal rail | Select when lower clamping priority outweighs exact VWM match; verify layout compatibility with identical footprint. |
| 1.5SMC33CA (ON Semiconductor) | VWM = 33 V, VC = 53.3 V @ 11.3 A, DO-214AB (SMC) package (larger, 3.3 mm height) | Higher thermal mass and 1.5 kW rating - suited for higher repetition rate surges but requires PCB rework | Choose only if system demands >600 W repetitive capability or improved thermal dissipation; not drop-in compatible due to larger SMC outline. |
Compared with P6SMB39C, SMBJ33CA offers tighter clamping at identical power rating and footprint, while 1.5SMC33CA trades size for higher surge endurance - making P6SMB39C optimal for cost-sensitive, space-constrained 33 V rail protection where 600 W single-event immunity suffices.
Availability
P6SMB39C is available at Aetrix Electronics and suitable for automotive infotainment systems, industrial switch-mode power supplies, and USB-C power delivery interfaces requiring stable component supply, consistent parametric performance, and full traceability through J-STD-020 Level 1 moisture handling.
Supply support for P6SMB39C 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 and industrial power rail hardening - emphasizing fast response, low leakage, and AEC-Q200-aligned process control.
FAQ
What is the polarity configuration of P6SMB39C?
The P6SMB39C is a bidirectional TVS diode, meaning it functions identically in both forward and reverse bias - no cathode band marking is present, and it protects AC or floating DC lines without orientation dependency. This differs from unidirectional variants like P6SMB39A, which require correct polarity placement. The C suffix explicitly denotes bidirectional construction per TSC's ordering nomenclature.
Does P6SMB39C meet automotive surge immunity standards?
Yes, P6SMB39C meets ISO 7637-2 Pulse 1, 2a, 2b, 3a, and 3b test requirements for automotive electrical systems, validated per its 600 W peak pulse power rating and sub-1 ps response time. Its –55°C to +150°C operating range and JESD201 Class 2 whisker resistance further support under-hood and ECU deployment, though full AEC-Q200 qualification must be confirmed per specific lot documentation.
What is the maximum clamping voltage of P6SMB39C under surge conditions?
The maximum clamping voltage of P6SMB39C is 56.4 V, measured at 11.1 A peak pulse current using the standard 10/1000 μs waveform. This value represents the upper limit of voltage seen by downstream components during a full 600 W transient event, ensuring protected ICs remain within absolute maximum ratings even under worst-case surge conditions.
Can P6SMB39C replace P6SMB39A in an existing design?
No - P6SMB39C is bidirectional while P6SMB39A is unidirectional, so direct substitution risks incorrect clamping behavior on polarized rails. Though both share identical VWM, VBR, and VC values, P6SMB39A requires cathode alignment and only clamps in reverse bias. Replacing P6SMB39A with P6SMB39C may cause unintended conduction in forward-biased paths unless circuit topology is verified for symmetrical protection.
What is the thermal resistance specification for P6SMB39C?
P6SMB39C has a junction-to-case thermal resistance (RθJC) of 10 °C/W and a junction-to-ambient thermal resistance (RθJA) of 55 °C/W, measured under standard JEDEC conditions. These values enable accurate thermal modeling when mounted on 1-inch² 2-oz copper pad; actual RθJA improves significantly with enhanced PCB copper area or thermal vias, critical for sustained surge duty cycles.
P6SMB39C 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):
- 31.6V
- Voltage - Breakdown (Min):
- 35.1V
- Voltage - Clamping (Max) @ Ipp:
- 56.4V
- Current - Peak Pulse (10/1000µs):
- 11.1A
- 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)
P6SMB39C FAQ
1.How can I place an order for P6SMB39C through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB39C 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 P6SMB39C reliable?
The price and inventory of P6SMB39C are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB39C is usually 5 days.
3.What payment methods are accepted for P6SMB39C?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB39C transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB39C?
P6SMB39C orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB39C 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 P6SMB39C?
For technical support, including P6SMB39C datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB39C requirements.
6.How does Aetrix verify that P6SMB39C is sourced from the original manufacturer or authorized distributors?
All P6SMB39C 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 P6SMB39C meets industry standards.
7.What is the process for return or replacement of P6SMB39C?
All P6SMB39C units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB39C, 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 P6SMB39C part is unused and in its original packaging.
Return procedure for P6SMB39C:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB39C Tags
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