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Taiwan Semiconductor Corporation P6SMB39H
- Part No.:
- P6SMB39H
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB39H.pdf
- Description:
- 600W, 39V, 10%, UNIDIRECTIONAL,
- Quantity:
- Payment:
- Shipping:
Inventory:5,935
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Product details
Overview
P6SMB39H from Taiwan Semiconductor is a unidirectional 600W surface-mount transient voltage suppressor (TVS) diode with a breakdown voltage range of 35.1–42.9 V, stand-off voltage of 31.6 V, and clamping voltage of 56.4 V at 11.1 A peak pulse current. It features glass-passivated junction, AEC-Q101 qualification, and DO-214AA (SMB) package - designed for automotive ESD and load-dump protection in power supply rails and CAN/LIN interfaces.
For engineers reviewing the P6SMB39H datasheet, P6SMB39H pinout, P6SMB39H application, or P6SMB39H equivalent, key selection criteria include its 31.6 V working voltage, 56.4 V clamping under 10/1000 µs surge, ±10% VBR tolerance, 1 µA leakage at VWM, and compliance with ISO 7637-2 Pulse 1/2a/2b/3a/3b for automotive transients.
Technical Context
The P6SMB39H operates as a unidirectional avalanche diode, activated when reverse voltage exceeds its minimum breakdown threshold of 35.1 V. Its glass-passivated junction ensures stable VBR and low leakage (<1 µA at 31.6 V), while thermal resistance values (RθJC = 10 °C/W, RθJA = 55 °C/W) support reliable operation up to 150 °C junction temperature.
It meets ISO 7637-2 immunity requirements for automotive electronics, including Pulse 1 (inductive load dump suppression), Pulse 2a (battery disconnect transient), and Pulse 3a/3b (switching noise). The device is not bidirectional - polarity is marked, and forward voltage is not specified for this variant per datasheet Note 2.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 35.1 V / 42.9 V - defines guaranteed avalanche conduction onset range under 1 mA test current |
| VWM | 31.6 V - maximum continuous reverse operating voltage before leakage exceeds 1 µA |
| VC @ IPPM | 56.4 V at 11.1 A - clamping voltage during 10/1000 µs surge; limits downstream IC stress |
| PPPSM | 600 W - peak pulse power handling per single non-repetitive 10/1000 µs waveform |
| IR @ VWM | <1 µA - ultra-low reverse leakage preserves battery-powered circuit standby current |
| TJ max | +150 °C - enables placement near hot components (e.g., power MOSFETs, DC/DC inductors) |
| Package | DO-214AA (SMB) - industry-standard SMT footprint; 0.090 g weight supports automated pick-and-place |
Pinout & Package
DO-214AA (SMB) package: molded plastic case with matte tin-plated leads, polarity indicated by cathode band; compliant with J-STD-002 solderability and JESD 201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current path / low-side reference node | Connected to ground or low-impedance return path during transient clamping |
| Cathode | Protected line input / high-side connection | Connected to protected rail (e.g., 24 V battery line); cathode band marks this terminal |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive underhood and cabin applications per stress test requirements |
| Glass-passivated junction | Ensures long-term VBR stability and low parameter drift over temperature and life |
| Clamping response <1.0 ps | Sub-nanosecond turn-on enables protection of high-speed logic and CAN transceivers |
| ISO 7637-2 compliance | Meets Pulse 1 (−150 V/0.5 Ω), Pulse 2a (+100 V), and Pulse 3a/b (±50 V) immunity test profiles |
| Moisture sensitivity level 1 | Zero bake requirement before reflow; compatible with standard SMT assembly processes |
Applications
| Automotive Power Rail Protection | CAN Bus Transient Suppression |
|---|---|
Use Scenario: 24 V battery-fed ECUs exposed to load dump and jump-start surges. IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery rail and DC/DC input to clamp transients before regulation. Use Value: Clamps 10/1000 µs surges to ≤56.4 V, preventing damage to 36 V-rated LDOs and microcontrollers. | Use Scenario: CAN FD nodes in vehicle body control modules subject to ESD and coupled noise. IC Role / Device Role / Timing Role: Low-capacitance TVS on CAN_H/CAN_L lines referenced to chassis ground. Use Value: Sub-1 ps response preserves signal integrity at 5 Mbps; <1 µA leakage avoids bus bias shift. |
| Industrial Sensor Interface Protection | LIN Bus Overvoltage Guarding |
Use Scenario: 4–20 mA loop-powered sensors in factory automation exposed to field wiring transients. IC Role / Device Role / Timing Role: TVS across sensor supply inputs to absorb induced surges from relay switching or motor drives. Use Value: 600 W surge rating handles repetitive 100 V/1 A pulses; DO-214AA footprint fits compact sensor PCBs. | Use Scenario: LIN slave nodes (e.g., door modules, seat controls) connected to 12 V battery via long harnesses. IC Role / Device Role / Timing Role: Unidirectional TVS on LIN bus line to suppress battery reversal and load dump coupling. Use Value: 31.6 V VWM allows normal 12 V operation while clamping >35 V faults to safe levels for LIN transceivers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ39A | Same DO-214AA package; bidirectional; VBR min/max = 43.3–47.9 V; VC = 60.0 V @ 10.0 A | Supports bipolar transients (e.g., reverse battery, double-ended noise); higher clamping voltage | Select SMBJ39A only if bidirectional protection is required; P6SMB39H offers lower clamping (56.4 V) for unidirectional use cases. |
| 1.5SMC39A | Higher power (1500 W); same VBR range (35.1–42.9 V); DO-214AB (SMC) package (larger footprint) | Used where higher surge margin is needed (e.g., alternator output lines); requires PCB layout change | Choose 1.5SMC39A for 1500 W surge capability; P6SMB39H is optimal for space-constrained 600 W applications with SMB footprint. |
Compared with SMBJ39A and 1.5SMC39A, the P6SMB39H delivers the lowest clamping voltage (56.4 V) in the SMB form factor, making it ideal for protecting 36 V-rated power stages without sacrificing board area or requiring layout revision.
Availability
P6SMB39H is available at Aetrix Electronics and suitable for automotive ECU design, industrial sensor interface protection, and LIN/CAN bus hardening requiring stable component supply and AEC-Q101 assurance.
Supply support for P6SMB39H 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 for automotive, industrial, and consumer markets.
The P6SMB39H belongs to TSC's AEC-Q101-qualified P6SMBxH series - engineered specifically for robust transient suppression in automotive power distribution networks and communication buses.
FAQ
What is the polarity configuration of the P6SMB39H?
The P6SMB39H is a unidirectional TVS diode with clearly marked cathode band. Its anode connects to ground or low-side reference, and cathode connects to the protected line (e.g., 24 V rail). This configuration provides reverse-biased clamping only - forward conduction is not rated for surge suppression. The P6SMB39H does not support bidirectional transients unless paired with a second device.
Does the P6SMB39H meet ISO 7637-2 for automotive applications?
Yes, the P6SMB39H is explicitly rated to meet ISO 7637-2 Pulse 1 (inductive load dump), Pulse 2a (battery disconnect), and Pulses 3a/3b (capacitive switching noise) per the manufacturer's datasheet. Its 600 W peak pulse power and 56.4 V clamping voltage ensure compliance when used per recommended layout guidelines - including short traces and low-inductance grounding.
What is the maximum junction temperature and thermal resistance of the P6SMB39H?
The P6SMB39H has a maximum junction temperature (TJ) of +150 °C and thermal resistances of RθJC = 10 °C/W (junction-to-case) and RθJA = 55 °C/W (junction-to-ambient). These values allow direct mounting on copper pour or thermal pads to sustain full 600 W surge capability in ambient temperatures up to +125 °C, provided PCB copper area meets DO-214AA thermal pad recommendations.
How does the P6SMB39H compare to the P6SMB39AH variant?
The P6SMB39AH has tighter VBR tolerance (37.1–41.0 V vs. 35.1–42.9 V for P6SMB39H) and slightly higher VWM (33.3 V vs. 31.6 V), resulting in lower leakage and improved margin against false triggering. Both share identical package, power rating, and clamping (53.9 V vs. 56.4 V), but P6SMB39H offers broader voltage coverage for cost-sensitive designs where ±10% VBR is acceptable.
Is the P6SMB39H RoHS and halogen-free compliant?
Yes, the P6SMB39H is RoHS compliant and halogen-free per IEC 61249-2-21. Its molding compound meets UL 94V-0 flammability rating, and terminals are matte tin-plated per J-STD-002 for lead-free solder compatibility. Moisture sensitivity level is rated at Level 1 (J-STD-020), eliminating bake requirements prior to reflow assembly.
P6SMB39H 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):
- 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)
P6SMB39H FAQ
1.How can I place an order for P6SMB39H through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB39H 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 P6SMB39H reliable?
The price and inventory of P6SMB39H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB39H is usually 5 days.
3.What payment methods are accepted for P6SMB39H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB39H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB39H?
P6SMB39H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB39H 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 P6SMB39H?
For technical support, including P6SMB39H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB39H requirements.
6.How does Aetrix verify that P6SMB39H is sourced from the original manufacturer or authorized distributors?
All P6SMB39H 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 P6SMB39H meets industry standards.
7.What is the process for return or replacement of P6SMB39H?
All P6SMB39H units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB39H, 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 P6SMB39H part is unused and in its original packaging.
Return procedure for P6SMB39H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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