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Taiwan Semiconductor Corporation P6SMB39AH
- Part No.:
- P6SMB39AH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB39AH.pdf
- Description:
- TVS DIODE 33.3VWM 53.9VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:8,316
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Product details
Overview
P6SMB39AH from Taiwan Semiconductor is a unidirectional 600W surface-mount Transient Voltage Suppressor (TVS) diode in DO-214AA (SMB) package, with breakdown voltage 37.1–41.0 V, stand-off voltage 33.3 V, clamping voltage 53.9 V at 11.6 A, and junction temperature range −55 °C to +150 °C - used for automotive ESD and load-dump protection in power supply rails and CAN/LIN interfaces.
For engineers reviewing the P6SMB39AH datasheet, P6SMB39AH pinout, P6SMB39AH application, or P6SMB39AH equivalent, key selection criteria include unidirectional polarity, 600W peak pulse power rating, 1.0 mA test current, <1 µA reverse leakage at VWM, and AEC-Q101 qualification for automotive-grade reliability.
Technical Context
The P6SMB39AH operates as a unidirectional avalanche diode, triggering when reverse voltage exceeds its minimum breakdown voltage (37.1 V), clamping transients to ≤53.9 V within <1 ps response time. Its glass-passivated junction ensures stable VBR tolerance and low leakage (<1 µA at 33.3 V).
Designed per ANSI/IEEE C62.35, it meets ISO 7637-2 Pulse 1/2a/2b/3a/3b for automotive transient immunity and supports automated SMT placement with moisture sensitivity level 1 (J-STD-020). Thermal resistance is RθJC = 10 °C/W and RθJA = 55 °C/W.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 37.1 V / 41.0 V - defines reliable conduction onset under transient stress; ±5.3% tolerance enables robust margin vs. 33.3 V system rail. |
| VWM | 33.3 V - maximum continuous reverse operating voltage; ensures no conduction during normal 24 V automotive operation. |
| VC @ IPPM | 53.9 V at 11.6 A - clamped voltage during 10/1000 µs surge; limits downstream IC stress below 54 V absolute max. |
| PPPSM | 600 W - peak pulse power handling; sustains 10/1000 µs transients up to 11.6 A without failure. |
| IR @ VWM | <1 µA - ultra-low reverse leakage; avoids parasitic loading on 33 V bias networks or high-impedance sensing nodes. |
| TJ Range | −55 °C to +150 °C - qualified for under-hood automotive environments; supports full AEC-Q101 thermal cycling compliance. |
Pinout & Package
DO-214AA (SMB) surface-mount package: molded plastic case with matte tin-plated leads, UL 94V-0 rated compound, cathode band marking for polarity identification, weight ≈ 0.090 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current path / low-side reference | Connected to ground or low-voltage return; forms clamping path with cathode to rail during overvoltage. |
| Cathode | Transient voltage input / protected rail connection | Connected to protected line (e.g., 24 V supply); conducts avalanche current to anode when VAK > VBR. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive use including temperature cycling, humidity, and mechanical shock - required for engine control, body electronics, and ADAS modules. |
| Glass passivated junction | Ensures stable VBR over lifetime and temperature; eliminates parameter drift due to surface contamination or humidity ingress. |
| Fast response time <1.0 ps | Clamps ESD events before sensitive ICs experience damage - critical for protecting CAN transceivers and LIN bus drivers. |
| Meets ISO 7637-2 Pulse 1/2a/2b/3a/3b | Validated against real-world automotive transients including battery disconnect, inductive load switching, and alternator load dump. |
| Moisture sensitivity level 1 | Zero bake requirement before reflow; compatible with standard SMT assembly lines without special handling or dry-packing. |
Applications
| Automotive Power Rail Protection | CAN/LIN Bus ESD Protection |
|---|---|
Use Scenario: Protecting 24 V battery-fed ECUs from load dump (ISO 7637-2 Pulse 5a) and alternator surges. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power rail and chassis ground to clamp transients above 33.3 V. Use Value: Limits peak voltage to 53.9 V during 600 W surges, preventing damage to 36 V-rated DC-DC converters and microcontrollers. | Use Scenario: Shielding CAN FD or LIN physical layer transceivers from ESD (IEC 61000-4-2) and coupled noise. IC Role / Device Role / Timing Role: Low-capacitance TVS on differential bus lines (CAN_H/CAN_L) referenced to ground. Use Value: Sub-1 ps response ensures clamping before transceiver input stages saturate; <1 µA leakage avoids bus bias disruption. |
| Industrial Sensor Power Input | LED Driver Overvoltage Clamp |
Use Scenario: Safeguarding 3.3 V/5 V sensor modules powered from shared 24 V industrial supply with switching noise. IC Role / Device Role / Timing Role: Secondary TVS after primary DC-DC stage, guarding LDO inputs against back-emf from solenoids or relays. Use Value: 33.3 V VWM allows clean operation across full 24 V ±20% range while clamping fast spikes to ≤54 V. | Use Scenario: Preventing catastrophic failure of constant-current LED drivers exposed to 48 V supply transients. IC Role / Device Role / Timing Role: Parallel-connected TVS across driver output to shunt overvoltage before MOSFET drain breakdown. Use Value: 600 W rating handles repetitive 10/1000 µs surges common in factory lighting systems; DO-214AA footprint fits tight board layouts. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ36A | VBR = 40–44.4 V, VC = 58.1 V @ 10.3 A, same DO-214AA package | Higher clamping voltage (+4.2 V) and lower IPPM (−1.3 A); less margin for 36 V systems | Select SMBJ36A only if system VMAX ≥ 59 V and layout allows higher clamping energy dissipation. |
| 1.5SMC39A | VBR = 41.1–45.4 V, VC = 60.2 V @ 9.97 A, DO-214AB (SMC) package (larger) | 10% higher clamping voltage, 15% larger footprint; not drop-in compatible due to pad layout mismatch | Choose 1.5SMC39A only when 600 W rating must be paired with higher thermal mass and board space permits SMC outline. |
Compared with SMBJ36A and 1.5SMC39A, the P6SMB39AH offers tighter VBR tolerance (±5.3% vs. ±10%), lower clamping voltage (53.9 V vs. ≥58.1 V), and DO-214AA compatibility with high-density automotive PCBs - making it optimal for space-constrained 24 V ECU designs requiring AEC-Q101 validation.
Availability
P6SMB39AH is available at Aetrix Electronics and suitable for automotive ECU protection, industrial sensor interface hardening, and LED driver overvoltage suppression requiring stable component supply across extended temperature and high-reliability production cycles.
Supply support for P6SMB39AH 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 automotive-qualified components.
The P6SMB39AH belongs to TSC's AEC-Q101-qualified P6SMBx(A)H series - engineered specifically for automotive and industrial transient suppression where compact size, fast response, and guaranteed clamping performance are mandatory.
FAQ
What is the polarity configuration of the P6SMB39AH?
The P6SMB39AH is a unidirectional TVS diode, with cathode marked by a band on the DO-214AA package. It conducts only when cathode voltage exceeds anode voltage by ≥37.1 V, making it suitable for DC rail protection where reverse polarity is not expected. Bidirectional variants use CH or CAH suffixes - the P6SMB39AH does not support symmetrical clamping.
Does the P6SMB39AH meet automotive qualification standards?
Yes, the P6SMB39AH is AEC-Q101 qualified and tested per ISO 7637-2 Pulse 1, 2a, 2b, 3a, and 3b. Its construction - glass-passivated junction, matte tin-plated leads, and JESD201 Class 2 whisker resistance - satisfies automotive reliability requirements for under-hood and body-control module applications.
What is the maximum clamping voltage of the P6SMB39AH under surge conditions?
The P6SMB39AH has a maximum clamping voltage (VC) of 53.9 V at 11.6 A peak pulse current (IPPM) with a 10/1000 µs waveform. This value is guaranteed across temperature and lifetime, ensuring downstream components see no more than 53.9 V during worst-case transients - critical for safeguarding 36 V-rated power ICs.
Can the P6SMB39AH be used in bidirectional signal line protection?
No - the P6SMB39AH is unidirectional and unsuitable for AC or bidirectional signal lines like USB or RS-485 without external circuitry. For such applications, use a bidirectional variant (e.g., P6SMB39AH's counterpart with CH/CAH suffix) or pair two P6SMB39AH devices in series opposition. The P6SMB39AH's single-junction design only clamps in one polarity direction.
What is the thermal resistance profile of the P6SMB39AH?
The P6SMB39AH has a junction-to-case thermal resistance (RθJC) of 10 °C/W and junction-to-ambient resistance (RθJA) of 55 °C/W at standard PCB mounting. These values assume JEDEC-standard copper pad layout; actual RθJA improves with added thermal vias or copper pour, enabling sustained 3 W steady-state dissipation within its −55 °C to +150 °C operating range.
P6SMB39AH 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):
- 33.3V
- Voltage - Breakdown (Min):
- 37.1V
- Voltage - Clamping (Max) @ Ipp:
- 53.9V
- Current - Peak Pulse (10/1000µs):
- 11.6A
- 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)
P6SMB39AH FAQ
1.How can I place an order for P6SMB39AH through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB39AH 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 P6SMB39AH reliable?
The price and inventory of P6SMB39AH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB39AH is usually 5 days.
3.What payment methods are accepted for P6SMB39AH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB39AH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB39AH?
P6SMB39AH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB39AH 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 P6SMB39AH?
For technical support, including P6SMB39AH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB39AH requirements.
6.How does Aetrix verify that P6SMB39AH is sourced from the original manufacturer or authorized distributors?
All P6SMB39AH 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 P6SMB39AH meets industry standards.
7.What is the process for return or replacement of P6SMB39AH?
All P6SMB39AH units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB39AH, 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 P6SMB39AH part is unused and in its original packaging.
Return procedure for P6SMB39AH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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