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Taiwan Semiconductor Corporation P6SMB9.1
- Part No.:
- P6SMB9.1
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB9.1.pdf
- Description:
- 600W, 9.1V, 10%, UNIDIRECTIONAL,
- Quantity:
- Payment:
- Shipping:
Inventory:8,513
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Product details
Overview
P6SMB9.1 from Taiwan Semiconductor is a unidirectional 600W surface-mount transient voltage suppressor (TVS) diode with a breakdown voltage range of 8.19–10.00 V, stand-off voltage of 7.37 V, and clamping voltage of 13.8 V at 45 A peak pulse current. It features low leakage (<1 µA @ 7.37 V), fast response (<1.0 ps), and meets ISO 7637-2 Pulse 1/2a/2b/3a/3b for automotive electronics protection.
For engineers reviewing the P6SMB9.1 datasheet, P6SMB9.1 pinout, P6SMB9.1 application, or P6SMB9.1 equivalent, this device is selected for robust overvoltage protection in DC power rails where precise clamping, high surge immunity, and SMB-packaged reliability are required - especially in switching mode power supplies, adapters, and display subsystems.
Technical Context
The P6SMB9.1 operates as a unidirectional avalanche diode, triggered when reverse voltage exceeds its minimum breakdown threshold (8.19 V). Its glass-passivated junction ensures stable VBR tolerance and low leakage, while thermal resistance values (RθJC = 10 °C/W, RθJA = 55 °C/W) support sustained operation up to TJ = 150 °C.
Designed for 10/1000 µs waveform compliance, it delivers 600 W non-repetitive peak pulse power with clamping performance validated at IPPM = 45 A. The DO-214AA (SMB) package enables automated placement and meets JESD201 Class 2 whisker resistance and UL 94V-0 flammability standards.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 8.19 V / 10.00 V - defines reliable turn-on range under 1 mA test current; ensures consistent overvoltage triggering across temperature and unit variance |
| VWM | 7.37 V - maximum continuous reverse operating voltage; sets safe DC rail margin before conduction begins |
| VC @ IPPM | 13.8 V @ 45 A - clamped voltage during 10/1000 µs surge; determines protected circuit's maximum transient exposure |
| PPPSM | 600 W - peak pulse power rating; quantifies single-event surge energy absorption capability |
| IR @ VWM | <1 µA - ultra-low reverse leakage; minimizes standby power loss and avoids false triggering in high-impedance circuits |
| TJ max | +150 °C - maximum junction temperature; supports operation in enclosed or thermally constrained environments |
| Package | DO-214AA (SMB) - standardized surface-mount outline with cathode band marking; compatible with IPC-7351B footprint and reflow profiles |
Pinout & Package
DO-214AA (SMB) package: molded plastic case with matte tin-plated leads, polarity indicated by cathode band. Weight ≈ 0.090 g. Complies with J-STD-002 solderability and JESD201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential side (e.g., GND or return path); conducts during positive surges when used in reverse-biased configuration |
| Cathode | Reverse-bias input terminal | Connected to protected line (e.g., +12 V rail); avalanche conduction initiates here when VREV > VBR |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable VBR tolerance (±5% for P6SMB9.1A variant), low leakage, and long-term reliability under thermal cycling |
| ISO 7637-2 compliance | Validated against Pulse 1 (inductive load dump), Pulse 2a/2b (switching transients), and Pulse 3a/3b (capacitive coupling noise) - essential for automotive ECUs and infotainment systems |
| Fast response time | <1.0 ps rise time from 0 V to VBR(min) - limits voltage overshoot before clamping engages, protecting sensitive downstream ICs |
| Moisture sensitivity level 1 | No floor-life limitation or bake requirement before reflow; simplifies SMT manufacturing and inventory handling |
Applications
| Switching Mode Power Supply (SMPS) | AC-DC Adapter |
|---|---|
Use Scenario: Input rectifier output or secondary-side DC bus subjected to line transients and load-dump events. IC Role / Device Role: Unidirectional TVS clamp placed across bulk capacitor or post-regulator rail. Use Value: Limits transient excursions to ≤13.8 V, preventing overvoltage damage to PWM controllers and MOSFET gate drivers. | Use Scenario: USB-C PD or legacy barrel-jack adapter output exposed to ESD and cable-induced surges. IC Role / Device Role: Final-stage overvoltage protector on regulated 5–12 V output rail. Use Value: Withstands 600 W pulses without degradation, maintaining regulation integrity during plug/unplug or hot-swap events. |
| Television Power Board | Monitor Backlight Inverter |
Use Scenario: Main 24 V or 48 V supply rail feeding LED driver ICs and microcontrollers. IC Role / Device Role: Primary surge suppression element upstream of DC-DC converters. Use Value: Clamps induced spikes from relay switching or nearby motor loads to safe levels below IC absolute maximum ratings. | Use Scenario: High-voltage boost stage (≥300 V) driving CCFL or early LED backlights. IC Role / Device Role: Secondary-side transient limiter on logic supply (e.g., 12 V bias rail). Use Value: Prevents latch-up or reset faults in timing and dimming ICs during inverter startup or arc-fault transients. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ9.0A | Breakdown range 9.5–10.5 V; tighter VBR tolerance (±5%); same SMB package and 600 W rating | Higher VWM (7.78 V) allows use in slightly higher nominal rails; identical ISO 7637-2 compliance | Select when tighter VBR control and marginally higher stand-off are prioritized over exact P6SMB9.1 VBR center point |
| 1.5SMC9.0A | Same VBR (9.0 V typ), but DO-214AB (SMC) package - larger footprint, higher PPPM (1500 W), RθJA = 35 °C/W | Requires PCB layout change; suited for higher-energy industrial surges where SMB thermal limits are insufficient | Choose only if system-level surge testing exceeds 600 W or ambient temperature exceeds 85 °C with sustained loading |
Compared with SMBJ9.0A and 1.5SMC9.0A, the P6SMB9.1 offers optimal balance of compact SMB footprint, precise 8.19–10.00 V breakdown targeting 9.1 V nominal rails, and proven automotive-grade transient immunity - making it preferred for space-constrained consumer and automotive auxiliary power designs.
Availability
P6SMB9.1 is available at Aetrix Electronics and suitable for switching mode power supplies, AC-DC adapters, and television power boards requiring stable component supply, RoHS-compliant packaging, and ISO 7637-2 validated surge protection.
Supply support for P6SMB9.1 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.
The P6SMB series belongs to TSC's high-reliability surface-mount TVS portfolio, engineered specifically for automotive, industrial, and consumer power electronics demanding certified transient immunity, low-profile packaging, and moisture-insensitive assembly.
FAQ
What is the breakdown voltage range specified for P6SMB9.1?
The P6SMB9.1 has a guaranteed breakdown voltage range of 8.19 V to 10.00 V at 1.0 mA test current (IT), per the manufacturer's electrical specifications table. This range reflects production tolerance and ensures reliable clamping onset across temperature and unit variation. The nominal 9.1 V designation corresponds to the center of this range, and the P6SMB9.1 must meet these limits to be compliant.
Is P6SMB9.1 unidirectional or bidirectional, and how is polarity marked?
The P6SMB9.1 is a unidirectional TVS diode, intended for reverse-biased operation on positive DC rails. Polarity is marked by a cathode band on the DO-214AA (SMB) package body - the banded end connects to the protected line (e.g., +12 V), while the unbanded end connects to ground. Bidirectional variants require "C" or "CA" suffixes (e.g., P6SMB9.1C), which the P6SMB9.1 does not carry.
What is the maximum clamping voltage of P6SMB9.1 and under what test condition?
The maximum clamping voltage (VC) of the P6SMB9.1 is 13.8 V, measured at a peak pulse current (IPPM) of 45 A using the standard 10/1000 µs double-exponential waveform. This value represents the worst-case voltage seen by downstream circuitry during a full-rated surge event and is critical for verifying compatibility with protected ICs' absolute maximum ratings.
Does P6SMB9.1 meet automotive transient immunity standards?
Yes, the P6SMB9.1 meets ISO 7637-2 requirements for Pulse 1 (inductive load dump), Pulse 2a/2b (supply disconnection and switching transients), and Pulse 3a/3b (capacitive coupling noise). This certification is explicitly stated in the product features and confirmed in the datasheet revision Q2209, making the P6SMB9.1 suitable for automotive body control modules, infotainment power supplies, and ADAS subsystems.
What is the thermal resistance profile of P6SMB9.1 and how does it affect PCB layout?
The P6SMB9.1 has a junction-to-case thermal resistance (RθJC) of 10 °C/W and junction-to-ambient (RθJA) of 55 °C/W. These values assume standard JEDEC 2-layer board conditions. To maintain TJ ≤ 150 °C, PCB copper area under the cathode/anode pads should follow TSC's suggested pad layout - minimizing thermal impedance without requiring external heatsinking for typical 600 W single-pulse duty.
P6SMB9.1 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):
- 7.37V
- Voltage - Breakdown (Min):
- 8.19V
- Voltage - Clamping (Max) @ Ipp:
- 13.8V
- Current - Peak Pulse (10/1000µs):
- 45A
- 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)
P6SMB9.1 FAQ
1.How can I place an order for P6SMB9.1 through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB9.1 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 P6SMB9.1 reliable?
The price and inventory of P6SMB9.1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB9.1 is usually 5 days.
3.What payment methods are accepted for P6SMB9.1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB9.1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB9.1?
P6SMB9.1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB9.1 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 P6SMB9.1?
For technical support, including P6SMB9.1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB9.1 requirements.
6.How does Aetrix verify that P6SMB9.1 is sourced from the original manufacturer or authorized distributors?
All P6SMB9.1 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 P6SMB9.1 meets industry standards.
7.What is the process for return or replacement of P6SMB9.1?
All P6SMB9.1 units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB9.1, 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 P6SMB9.1 part is unused and in its original packaging.
Return procedure for P6SMB9.1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB9.1 Tags
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