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Taiwan Semiconductor Corporation P6SMB39CH
- Part No.:
- P6SMB39CH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB39CH.pdf
- Description:
- 600W, 39V, 10%, BIDIRECTIONAL, T
- Quantity:
- Payment:
- Shipping:
Inventory:6,918
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Product details
Overview
P6SMB39CH from Taiwan Semiconductor is a bidirectional 600W surface-mount Transient Voltage Suppressor (TVS) diode in DO-214AA (SMB) package, with breakdown voltage 35.1–42.9 V, clamping voltage 56.4 V at 11.1 A peak pulse current, and AEC-Q101 qualification for automotive-grade reliability.
For engineers reviewing the P6SMB39CH datasheet, P6SMB39CH pinout, P6SMB39CH application, or P6SMB39CH equivalent, this device is selected for high-energy ESD and load-dump protection in automotive lighting modules, infotainment power rails, and CAN/LIN bus interface circuits where low-leakage (<1 µA @ 31.6 V), fast response (<1.0 ps), and ISO 7637-2 Pulse 1/2a/2b/3a/3b compliance are required.
Technical Context
P6SMB39CH is a unidirectional/bidirectional TVS diode configured as a single die in a glass-passivated junction structure. Its bidirectional operation (denoted by "CH" suffix) enables symmetrical clamping in both polarities, supporting robust protection against reverse-polarity transients and bipolar surges without external polarity management.
The device delivers 600 W non-repetitive peak pulse power (10/1000 µs waveform), with thermal resistance RθJC = 10 °C/W and RθJA = 55 °C/W, enabling stable operation up to TJ = 150 °C. It meets JESD201 Class 2 whisker resistance and J-STD-020 Moisture Sensitivity Level 1.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 35.1 V / 42.9 V - Ensures reliable triggering above system stand-off voltage while accommodating manufacturing tolerance and temperature drift. |
| VWM | 31.6 V - Maximum continuous reverse operating voltage; defines safe DC/AC bias margin before leakage rises significantly. |
| VC @ IPPM | 56.4 V at 11.1 A - Clamped voltage during 10/1000 µs surge; determines maximum stress imposed on downstream ICs. |
| IPPM | 11.1 A - Peak pulse current capability under standard 10/1000 µs waveform; directly maps to surge energy handling (600 W). |
| ID @ VWM | <1 µA - Ultra-low reverse leakage ensures minimal power loss and signal integrity in high-impedance sensing or battery-backed circuits. |
| TJ max | 150 °C - Junction temperature limit enabling use in under-hood automotive environments with sustained ambient up to 125 °C. |
| Package | DO-214AA (SMB) - Standardized surface-mount outline with 0.090 g mass, matte tin-plated leads, and UL 94V-0 molding compound. |
Pinout & Package
DO-214AA (SMB) package: molded plastic case with cathode band marking; polarity-sensitive for unidirectional variants, but P6SMB39CH is bidirectional-no functional cathode/anode distinction; terminals are symmetric and interchangeable in circuit layout.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetric) | Bidirectional transient conduction path | Both terminals serve identical clamping function; no polarity dependency-simplifies PCB routing and eliminates orientation errors during automated placement. |
| Case | Thermal and mechanical interface | Plastic body provides electrical isolation; thermal path relies on solder joint conduction to copper pour-requires adequate pad copper area per JEDEC MS-012. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including temperature cycling, humidity bias, and mechanical shock-enables use in engine control, ADAS, and body electronics without additional qualification. |
| ISO 7637-2 compliant | Withstands Pulse 1 (inductive load dump), Pulse 2a/2b (switching transients), and Pulse 3a/3b (capacitive coupling) without degradation-meets OEM-level EMC requirements. |
| Glass-passivated junction | Provides stable VBR over lifetime and improved resistance to humidity-induced parameter shift versus epoxy-passivated alternatives. |
| Fast response time <1.0 ps | Clamps transients before sensitive logic or analog circuitry experiences overvoltage-critical for protecting high-speed interfaces like CAN FD or LIN. |
| Moisture Sensitivity Level 1 | Zero bake requirement prior to reflow; supports standard SMT assembly without special handling or dry-pack protocols. |
Applications
| Automotive LED Headlamp Driver | Infotainment Power Rail Protection |
|---|---|
|
Use Scenario: Protects LED driver ICs from load-dump transients (ISO 7637-2 Pulse 5a) during alternator regulation failure in 12 V vehicle systems. IC Role / Device Role: Bidirectional clamping element placed across input rail (between VIN and GND) to shunt surge energy away from PMIC and gate drivers. Use Value: Withstands 600 W peak pulse and clamps to ≤56.4 V, preventing damage to 40 V-rated MOSFETs and ensuring uninterrupted illumination during transient events. |
Use Scenario: Shields USB-C PD controller and audio codec power inputs from ESD (IEC 61000-4-2 ±15 kV air) and coupled noise in center-stack displays. IC Role / Device Role: Low-capacitance TVS placed at board-level input filter stage to suppress fast-rising transients before LC filtering. Use Value: Sub-1 µA leakage at 31.6 V avoids loading low-power standby rails; bidirectional symmetry eliminates need for dual-diode placement. |
| CAN Bus Interface Protection | Industrial PLC Digital Input Module |
|
Use Scenario: Safeguards CAN transceiver pins (CAN_H/CAN_L) against EFT (IEC 61000-4-4) and surge (IEC 61000-4-5) in automotive gateway ECUs. IC Role / Device Role: Common-mode TVS pair (one per line) referenced to ground, leveraging bidirectional clamping to handle differential and common-mode spikes. Use Value: 56.4 V clamping limits transceiver stress below absolute maximum ratings; AEC-Q101 qualification ensures long-term reliability in vibration-prone environments. |
Use Scenario: Protects 24 V DC digital input optocoupler front-end from inductive kickback when switching solenoids or relays in factory automation cabinets. IC Role / Device Role: Standoff-rated TVS mounted across input terminals to clamp reverse polarity and switching transients before series resistor and zener clamp stage. Use Value: 31.6 V VWM allows full 24 V nominal operation with headroom; 11.1 A IPPM handles typical 100–200 mJ relay coil energy without degradation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ36CA | 36 V VBR min/max (32.4–39.6 V); 600 W rating; same DO-214AA package; higher VWM (29.1 V) and lower VC (52.0 V). | Slightly tighter VBR tolerance and lower clamping voltage benefit margin-critical 3.3 V or 5 V logic rails. | Select SMBJ36CA when lower clamping voltage is prioritized over exact 39 V nominal rating-verify compatibility with system VWM margin. |
| 1.5SMC39CA | Same VBR range (35.1–42.9 V); 1500 W rating; larger DO-214AB (SMC) package; higher IPPM (31.5 A) and VC (60.0 V). | Higher power handling suits industrial motor drives with repetitive surges; requires larger PCB footprint and different thermal design. | Choose 1.5SMC39CA only if 600 W is insufficient and layout allows SMC footprint-P6SMB39CH remains optimal for space-constrained automotive SMB layouts. |
Compared with SMBJ36CA and 1.5SMC39CA, P6SMB39CH offers AEC-Q101 qualification and ISO 7637-2 compliance out-of-the-box-making it the preferred choice for automotive front-end protection where qualification traceability and standardized test alignment are mandatory.
Availability
P6SMB39CH is available at Aetrix Electronics and suitable for automotive lighting systems, infotainment power domains, and industrial digital input modules requiring stable component supply with full AEC-Q101 documentation and lot-level traceability.
Supply support for P6SMB39CH 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-Q certified production lines.
The P6SMB series was designed specifically for high-reliability automotive and industrial transient suppression, emphasizing AEC-Q101 qualification, ISO 7637-2 compliance, and surface-mount manufacturability in compact SMB packages.
FAQ
What does the "CH" suffix indicate in P6SMB39CH?
The "CH" suffix in P6SMB39CH denotes bidirectional configuration-meaning the device functions identically in both forward and reverse bias directions. This eliminates polarity sensitivity during placement and enables symmetrical clamping of positive and negative transients, unlike unidirectional "H" variants which require correct cathode orientation. P6SMB39CH is fully specified for bidirectional use per TSC's datasheet Section "Devices for Bipolar Applications".
Is P6SMB39CH suitable for ISO 16750-2 load-dump protection?
No-P6SMB39CH is rated for ISO 7637-2 Pulse 5a (load dump), not ISO 16750-2. While both standards address load-dump events, ISO 16750-2 specifies higher energy (up to 170 V, 100 ms) and longer duration than the 600 W, 10/1000 µs capability of P6SMB39CH. For ISO 16750-2 compliance, a higher-energy TVS such as 5.0SMDJ33A or dedicated load-dump suppressor is required. P6SMB39CH remains valid for ISO 7637-2 Pulse 5a in 12 V systems.
What is the maximum steady-state power dissipation of P6SMB39CH?
The maximum steady-state power dissipation (Ptot) of P6SMB39CH is 3 W at TA = 25 °C, as specified in the Absolute Maximum Ratings table. This value derates linearly above 25 °C per the Pulse Derating Curve (Figure 2), reaching ~1.5 W at 100 °C ambient. It is intended for transient suppression-not continuous power dissipation-so sustained DC power must remain well below this limit to avoid thermal runaway.
Does P6SMB39CH have a defined junction capacitance value?
No specific junction capacitance (CJ) is published for P6SMB39CH in the provided datasheet. Figure 5 shows a general CJ vs. VBR curve for the P6SMB family, indicating ~100–200 pF at VWM for 39 V-class devices, but no discrete value is assigned to P6SMB39CH. For high-frequency signal line protection (e.g., USB, HDMI), a low-capacitance TVS such as SP3052 or ESD9L5.0 should be verified instead.
Can P6SMB39CH replace P6SMB39AH in a design?
Yes-P6SMB39CH and P6SMB39AH share identical VBR (35.1–42.9 V), VWM (31.6 V), VC (56.4 V), and IPPM (11.1 A) specifications, differing only in polarity designation: "CH" is bidirectional, "AH" is unidirectional. If the original design uses P6SMB39AH with correct cathode orientation, substituting P6SMB39CH introduces no electrical risk and removes orientation dependency-but verify that the PCB layout does not rely on unidirectional behavior for other circuit functions.
P6SMB39CH 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
P6SMB39CH FAQ
1.How can I place an order for P6SMB39CH through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB39CH 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 P6SMB39CH reliable?
The price and inventory of P6SMB39CH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB39CH is usually 5 days.
3.What payment methods are accepted for P6SMB39CH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB39CH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB39CH?
P6SMB39CH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB39CH 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 P6SMB39CH?
For technical support, including P6SMB39CH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB39CH requirements.
6.How does Aetrix verify that P6SMB39CH is sourced from the original manufacturer or authorized distributors?
All P6SMB39CH 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 P6SMB39CH meets industry standards.
7.What is the process for return or replacement of P6SMB39CH?
All P6SMB39CH units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB39CH, 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 P6SMB39CH part is unused and in its original packaging.
Return procedure for P6SMB39CH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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