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Taiwan Semiconductor Corporation P6SMB91C
- Part No.:
- P6SMB91C
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB91C.pdf
- Description:
- 600W, 91V, 10%, BIDIRECTIONAL, T
- Quantity:
- Payment:
- Shipping:
Inventory:7,601
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Product details
Overview
P6SMB91C from Taiwan Semiconductor is a bidirectional 600W surface-mount transient voltage suppressor (TVS) diode in DO-214AA (SMB) package, with a breakdown voltage range of 81.9–100 V, clamping voltage of 131 V at 4.8 A peak pulse current, and stand-off voltage of 73.7 V. It protects DC power rails and signal lines in switching mode power supplies, adapters, and display electronics against ESD and surge events per ISO 7637-2.
For engineers reviewing the P6SMB91C datasheet, P6SMB91C pinout, P6SMB91C application, or P6SMB91C equivalent, key selection criteria include unidirectional/bidirectional configuration (C suffix = bidirectional), 1.0 mA test current for VBR, <1 µA leakage at VWM, 10/1000 µs surge rating, and compliance with JESD201 Class 2 whisker resistance and UL 94V-0 molding compound.
Technical Context
The P6SMB91C operates as a bidirectional avalanche diode, symmetrically clamping transients above ±81.9 V in either polarity. Its glass-passivated junction ensures stable breakdown behavior, low leakage (<1 µA at 73.7 V), and fast response (<1.0 ps rise time from 0 V to VBR(min)). It meets ISO 7637-2 Pulse 1, 2a, 2b, 3a, and 3b automotive transient immunity requirements.
Thermally, it features RθJC = 10 °C/W and RθJA = 55 °C/W, enabling reliable operation up to TJ = +150 °C. The DO-214AA (SMB) package supports automated placement and provides 0.090 g mass with matte tin-plated leads compliant with J-STD-002 solderability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 81.9 V / 100 V - defines minimum and maximum voltage at which avalanche conduction begins under 1.0 mA test current |
| VWM | 73.7 V - maximum continuous reverse working voltage before significant leakage occurs |
| VC @ IPPM | 131 V at 4.8 A - clamped voltage during 10/1000 µs surge, limiting downstream circuit stress |
| PPPSM | 600 W - non-repetitive peak pulse power handling capability under standardized waveform |
| IR @ VWM | <1 µA - ultra-low reverse leakage ensures minimal standby power loss in high-impedance circuits |
| TJ max | +150 °C - maximum junction temperature enabling use in thermally demanding industrial and automotive environments |
| Package | DO-214AA (SMB) - industry-standard surface-mount outline with cathode band marking and 3,000 pcs/reel tape-and-reel packaging |
Pinout & Package
DO-214AA (SMB) package: molded plastic case with matte tin-plated leads, polarity indicated by cathode band; terminals are anode and cathode, with symmetrical bidirectional conduction behavior due to C-suffix construction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient return path (bidirectional) | Conducts surge current toward ground or supply rail depending on polarity of transient event |
| Cathode | Transient return path (bidirectional) | Marked band indicates terminal; functions identically to anode under reverse polarity due to symmetrical structure |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines without polarity concerns |
| ISO 7637-2 compliance | Validated immunity to automotive load dump and inductive switching transients (Pulse 1/2a/2b/3a/3b) |
| Glass passivated junction | Ensures long-term stability of VBR and low parameter drift across temperature and lifetime |
| J-STD-020 Level 1 moisture sensitivity | Allows unlimited floor life and standard reflow without baking preconditioning |
| RoHS & halogen-free | Meets IEC 61249-2-21 and EU RoHS Directive for environmentally constrained applications |
Applications
| Switching Mode Power Supply (SMPS) | AC-DC Adapters |
|---|---|
Use Scenario: Protection of primary-side rectifier output and secondary-side DC bus against line surges and MOSFET switching spikes. IC Role / Device Role / Timing Role: Transient voltage suppressor placed across bulk capacitor or input rectifier to clamp energy before it reaches controller ICs. Use Value: Limits voltage excursion to ≤131 V during 600 W 10/1000 µs transients, preventing overvoltage failure of electrolytic capacitors and PWM controllers. | Use Scenario: Input-stage surge suppression in wall-mounted AC-DC adapters subject to lightning-induced mains transients. IC Role / Device Role / Timing Role: Bidirectional TVS connected between L/N lines or L/N-to-PE to absorb differential and common-mode surges. Use Value: Withstands ≥4.8 A peak pulse current while maintaining clamping below 131 V, meeting IEC 61000-4-5 Level 3 requirements. |
| Flat Panel TV Power Board | Computer Monitor DC Distribution |
Use Scenario: Protection of 12 V and 24 V logic and backlight rails against ESD and board-level coupling from internal switching noise. IC Role / Device Role / Timing Role: Point-of-load TVS mounted near DC-DC converter outputs to suppress fast-rising transients from local load switching. Use Value: Sub-1 µA leakage at 73.7 V avoids loading sensitive feedback networks; 131 V clamping prevents latch-up in microcontrollers and LED drivers. | Use Scenario: Surge protection on USB-C PD input and auxiliary 5 V/3.3 V rails in monitor mainboard designs. IC Role / Device Role / Timing Role: Bidirectional TVS placed across VBUS and GND to handle both positive and negative ESD events per IEC 61000-4-2. Use Value: Fast <1.0 ps response captures sub-nanosecond ESD pulses; DO-214AA footprint enables compact layout adjacent to connector. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ90CA | Breakdown range 90–110 V; VC = 135 V @ 4.7 A; same DO-214AA package and 600 W rating | Slightly higher VBR and VC reduce margin for 91 V nominal systems but improve noise immunity | Select SMBJ90CA when tighter VBR tolerance (±5%) is required over P6SMB91C's ±11% range |
| 1.5SMC91CA | Same VBR (81.9–100 V), but DO-214AB (SMC) package; 1500 W rating; higher thermal mass | Larger SMC footprint increases PCB area but improves surge endurance in high-energy industrial environments | Choose 1.5SMC91CA where repeated surge exposure or higher IPPM (≥10 A) is expected, accepting larger board space |
Compared with SMBJ90CA and 1.5SMC91CA, the P6SMB91C offers optimal balance of compact DO-214AA size, precise 73.7 V stand-off for 80–90 V systems, and cost-effective 600 W protection-ideal for space-constrained consumer power electronics.
Availability
P6SMB91C is available at Aetrix Electronics and suitable for switching mode power supplies, AC-DC adapters, and flat-panel display electronics requiring stable component supply and full traceability through production ramps.
Supply support for P6SMB91C 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 industrial, computing, and consumer markets.
The P6SMB91C belongs to TSC's P6SMBx series of 600 W SMB-packaged TVS diodes, engineered for robust transient immunity in cost-sensitive, high-volume power conversion and interface protection applications.
FAQ
What is the polarity configuration of the P6SMB91C?
The P6SMB91C is a bidirectional TVS diode, indicated by the "C" suffix. Unlike unidirectional variants (e.g., P6SMB91), it conducts symmetrically in both forward and reverse directions, making it suitable for AC line protection and floating signal paths where polarity is undefined or alternating. This behavior is confirmed in the device's electrical specifications table and ordering information section.
What is the maximum clamping voltage of the P6SMB91C under standard surge conditions?
The P6SMB91C has a maximum clamping voltage (VC) of 131 V when subjected to its rated peak pulse current of 4.8 A using the 10/1000 µs waveform. This value is measured at TA = 25°C and defines the upper voltage limit imposed on protected circuitry during transient events, directly supporting design margin calculations for downstream components.
Does the P6SMB91C meet automotive transient immunity standards?
Yes, the P6SMB91C meets ISO 7637-2 requirements for Pulse 1, 2a, 2b, 3a, and 3b, covering typical automotive electrical disturbances including load dump, alternator ripple, and inductive switching transients. This compliance is explicitly stated in the FEATURES section of the official Taiwan Semiconductor datasheet for the P6SMB6.8(A)–P6SMB220(A) family.
What is the junction-to-ambient thermal resistance of the P6SMB91C?
The P6SMB91C has a junction-to-ambient thermal resistance (RθJA) of 55 °C/W under standard JEDEC test conditions. This value assumes mounting on a 1-inch² copper pad and is critical for estimating steady-state junction temperature rise in continuous power dissipation scenarios, though the device is primarily intended for transient (non-repetitive) operation.
How does the P6SMB91C differ from the P6SMB91A variant?
The P6SMB91C and P6SMB91A differ in breakdown voltage tolerance: P6SMB91C has a VBR range of 81.9–100 V (±11%), while P6SMB91A specifies 86.5–95.5 V (±5%). Both share identical package (DO-214AA), power rating (600 W), and clamping performance (125 V for P6SMB91A vs. 131 V for P6SMB91C), but the tighter tolerance of the "A" grade suits precision voltage threshold applications.
P6SMB91C 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):
- 73.7V
- Voltage - Breakdown (Min):
- 81.9V
- Voltage - Clamping (Max) @ Ipp:
- 131V
- Current - Peak Pulse (10/1000µs):
- 4.8A
- 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)
P6SMB91C FAQ
1.How can I place an order for P6SMB91C through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB91C 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 P6SMB91C reliable?
The price and inventory of P6SMB91C are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB91C is usually 5 days.
3.What payment methods are accepted for P6SMB91C?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB91C transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB91C?
P6SMB91C orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB91C 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 P6SMB91C?
For technical support, including P6SMB91C datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB91C requirements.
6.How does Aetrix verify that P6SMB91C is sourced from the original manufacturer or authorized distributors?
All P6SMB91C 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 P6SMB91C meets industry standards.
7.What is the process for return or replacement of P6SMB91C?
All P6SMB91C units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB91C, 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 P6SMB91C part is unused and in its original packaging.
Return procedure for P6SMB91C:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB91C Tags
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