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Taiwan Semiconductor Corporation P6SMB9.1AH
- Part No.:
- P6SMB9.1AH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB9.1AH.pdf
- Description:
- 600W, 9.1V, UNIDIRECTIONAL, TVS
- Quantity:
- Payment:
- Shipping:
Inventory:3,216
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Product details
Overview
P6SMB9.1AH from Taiwan Semiconductor is a unidirectional 600W surface-mount transient voltage suppressor (TVS) diode designed for automotive-grade circuit protection. It features a breakdown voltage range of 8.65–9.55 V at 1.0 mA test current, a maximum clamping voltage of 13.4 V at 47 A peak pulse current, and AEC-Q101 qualification for under-hood electronics.
For engineers reviewing the P6SMB9.1AH datasheet, P6SMB9.1AH pinout, P6SMB9.1AH application, or P6SMB9.1AH equivalent, key selection criteria include its 7.78 V stand-off voltage, <1 μA reverse leakage at VWM, 10/1000 μs surge capability, DO-214AA (SMB) package compatibility, and ISO 7637-2 Pulse 1/2a/2b/3a/3b compliance for automotive EFT and load-dump immunity.
Technical Context
The P6SMB9.1AH operates as a unidirectional avalanche diode with glass-passivated junction, enabling fast response (<1.0 ps rise time from 0 V to VBR min) and stable clamping under repetitive transients. Its thermal resistance is RθJC = 10 °C/W and RθJA = 55 °C/W, supporting operation up to +150 °C junction temperature.
It meets JESD201 Class 2 whisker resistance and J-STD-020 Moisture Sensitivity Level 1, ensuring robustness in automated SMT assembly. The device is rated for 100 A non-repetitive forward surge (8.3 ms half-sine) and exhibits a VBR temperature coefficient of 0.068 %/°C - critical for voltage stability across automotive ambient ranges.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 8.65 V / 9.55 V at IT = 1.0 mA - defines reliable avalanche initiation window for predictable clamping onset |
| VWM | 7.78 V - maximum continuous reverse operating voltage before significant leakage begins |
| IPPM | 47 A (10/1000 μs waveform) - peak surge current it safely clamps without failure |
| VC@IPPM | 13.4 V - maximum voltage seen by protected circuit during full-rated transient event |
| PPPSM | 600 W - non-repetitive peak pulse power handling capacity per JEDEC standard |
| IR@VWM | <1 μA - ultra-low leakage ensures minimal standby power loss and signal integrity in high-impedance nodes |
| TJ max | +150 °C - enables placement near heat sources in engine control units and body electronics |
Pinout & Package
Package: DO-214AA (SMB), surface-mount, single-diode configuration with cathode band marking. Matte tin-plated leads comply with J-STD-002 solderability requirements.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to system ground or low-side return path; conducts during forward surge events (e.g., reverse battery connection) |
| Cathode | Avalanche clamping terminal | Connected to protected line (e.g., CAN_H, LIN, sensor supply); initiates breakdown when line voltage exceeds VBR |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including powertrain, chassis, and infotainment systems per stress-test requirements |
| Glass passivated junction | Enhances long-term reliability and moisture resistance vs. epoxy-passivated alternatives in humid environments |
| ISO 7637-2 compliance | Withstands Pulse 1 (inductive load dump), Pulse 2a/2b (switching transients), and Pulse 3a/3b (EFT) without degradation |
| Low profile SMB package | Enables high-density PCB layouts and compatibility with standard pick-and-place equipment for cost-effective manufacturing |
| 10/1000 μs surge rating | Matches industry-standard test waveform used in automotive OEM component specifications and system-level EMC validation |
Applications
| Automotive Power Line Protection | CAN Bus Transient Suppression |
|---|---|
|
Use Scenario: Protecting 12 V battery-fed ECUs from load-dump spikes (up to 35 V, 400 ms) and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power rail and ground to clamp overvoltage before it reaches LDOs or microcontrollers. Use Value: Limits peak voltage to ≤13.4 V during 47 A transients, preserving downstream ICs rated for 16 V absolute maximum. |
Use Scenario: Shielding CAN_H/CAN_L lines against ESD and coupled transients in vehicle networking. IC Role / Device Role / Timing Role: Standoff-clamp TVS on each differential line, referenced to chassis ground, with low capacitance (<100 pF). Use Value: Clamps fast-rising pulses within 1 ps while maintaining signal integrity - verified by ISO 11898-2 EMC immunity testing. |
| LED Lighting Driver Input Protection | Industrial Sensor Signal Line Guarding |
|
Use Scenario: Safeguarding constant-current LED drivers in headlamp modules from ignition-induced surges. IC Role / Device Role / Timing Role: Primary overvoltage clamp on input stage, upstream of buck controller and gate driver. Use Value: Withstands 600 W pulses without degradation, enabling >100,000-cycle lifetime under repeated 12 V system transients. |
Use Scenario: Protecting analog outputs (e.g., 4–20 mA, 0–10 V) of pressure/temperature sensors in harsh industrial settings. IC Role / Device Role / Timing Role: Low-leakage (≤1 μA) TVS on signal line to ground, minimizing offset error and drift. Use Value: Maintains <0.01% full-scale error contribution while suppressing ±2 kV ESD per IEC 61000-4-2. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ9.0A | Lower PPPM (400 W), higher VC (15.4 V @ 28.6 A), same DO-214AC (SMA) footprint but smaller thermal mass | Limited to lower-energy transients; unsuitable for ISO 7637-2 Pulse 1 where 600 W is required | Select only if board space constraints prevent SMB use and surge energy remains below 400 W |
| 1.5SMC9.1A | Same 600 W rating and VBR range, but in larger DO-214AB (SMC) package (7.11 × 6.22 mm vs. SMB's 4.57 × 3.94 mm) | Better thermal dissipation but incompatible with high-density automotive PCBs requiring SMB footprint | Prefer when thermal margin is critical and layout allows larger pad area; not drop-in compatible |
Compared with SMAJ9.0A and 1.5SMC9.1A, the P6SMB9.1AH uniquely balances AEC-Q101 compliance, 600 W surge capacity, SMB footprint, and 13.4 V clamping - making it optimal for space-constrained automotive modules needing certified, high-energy protection.
Availability
P6SMB9.1AH is available at Aetrix Electronics and suitable for automotive ECU design, CAN/LIN bus interface development, and industrial sensor signal conditioning requiring stable component supply and long-term lifecycle support.
Supply support for P6SMB9.1AH 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 P6SMB9.1AH belongs to TSC's AEC-Q101-certified P6SMBx(A)H series - engineered specifically for automotive power-line and data-line transient suppression, with emphasis on ISO 7637-2 compliance and high-reliability SMT manufacturability.
FAQ
What is the polarity configuration of the P6SMB9.1AH?
The P6SMB9.1AH is a unidirectional TVS diode, meaning it conducts in forward bias (anode-to-cathode) like a standard diode and clamps in reverse bias above its breakdown voltage. Its cathode band marking aligns with standard DO-214AA polarity conventions, and it is not intended for bidirectional use unless paired with a second device. This configuration ensures precise clamping on positive transients while blocking normal reverse-bias leakage.
Does the P6SMB9.1AH meet automotive environmental standards beyond AEC-Q101?
Yes, the P6SMB9.1AH meets ISO 7637-2 Pulse 1/2a/2b/3a/3b for electrical transient immunity, JESD201 Class 2 whisker resistance, J-STD-020 Moisture Sensitivity Level 1, and RoHS/Halogen-free compliance per IEC 61249-2-21. These qualifications collectively validate its suitability for under-hood and cabin-mounted automotive electronics exposed to thermal cycling, humidity, and mechanical vibration.
How does the P6SMB9.1AH's clamping voltage compare to similar 9 V TVS diodes?
The P6SMB9.1AH clamps at 13.4 V under 47 A (10/1000 μs), which is 0.5–1.2 V lower than comparable 9 V TVS devices like SMAJ9.0A (15.4 V) or SMCJ9.0A (14.4 V). This tighter clamping margin directly improves system-level robustness by reducing stress on downstream 16 V-rated regulators and microcontrollers during surge events.
Can the P6SMB9.1AH be used in bidirectional configurations?
No - the P6SMB9.1AH is unidirectional only. For bidirectional protection, Taiwan Semiconductor specifies part numbers with "CAH" suffix (e.g., P6SMB9.1CAH), which integrate two opposing diodes in one package. Using two P6SMB9.1AH devices back-to-back is electrically possible but increases PCB area, BOM count, and thermal coupling risk versus a purpose-built bidirectional variant.
What is the maximum allowable mounting temperature for reflow soldering of the P6SMB9.1AH?
The P6SMB9.1AH supports lead-free reflow per J-STD-020, with a peak temperature of 260 °C for ≤30 seconds and a maximum floor life of unlimited at MSL Level 1. Its matte tin-plated leads ensure solderability per J-STD-002, and the UL 94V-0 molding compound withstands standard Pb-free thermal profiles without delamination or parametric shift.
P6SMB9.1AH Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Package/Case:
- DO-214AA, SMB
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 7.78V
- Voltage - Breakdown (Min):
- 8.65V
- Voltage - Clamping (Max) @ Ipp:
- 13.4V
- Current - Peak Pulse (10/1000µs):
- 47A
- 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)
P6SMB9.1AH FAQ
1.How can I place an order for P6SMB9.1AH through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB9.1AH 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 P6SMB9.1AH reliable?
The price and inventory of P6SMB9.1AH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB9.1AH is usually 5 days.
3.What payment methods are accepted for P6SMB9.1AH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB9.1AH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB9.1AH?
P6SMB9.1AH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB9.1AH 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 P6SMB9.1AH?
For technical support, including P6SMB9.1AH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB9.1AH requirements.
6.How does Aetrix verify that P6SMB9.1AH is sourced from the original manufacturer or authorized distributors?
All P6SMB9.1AH 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 P6SMB9.1AH meets industry standards.
7.What is the process for return or replacement of P6SMB9.1AH?
All P6SMB9.1AH units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB9.1AH, 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 P6SMB9.1AH part is unused and in its original packaging.
Return procedure for P6SMB9.1AH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB9.1AH Tags
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