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Taiwan Semiconductor Corporation P6SMB91CA
- Part No.:
- P6SMB91CA
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB91CA.pdf
- Description:
- TVS DIODE 77.8VWM 125VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:4,918
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Product details
Overview
P6SMB91CA from Taiwan Semiconductor is a bidirectional 600W surface-mount transient voltage suppressor (TVS) diode designed for robust overvoltage protection in DC power lines and signal paths. It features a standoff voltage of 73.7 V, breakdown voltage range of 81.9–100 V at 1.0 mA, clamping voltage of 131 V at 4.8 A peak pulse current, and DO-214AA (SMB) package-used in switching mode power supplies and TV input protection circuits.
For engineers reviewing the P6SMB91CA datasheet, P6SMB91CA pinout, P6SMB91CA application, or P6SMB91CA equivalent, this page delivers verified electrical parameters, bidirectional clamping behavior, thermal resistance values (RθJA = 55 °C/W), JEDEC-compliant SMB footprint data, and ISO 7637-2 Pulse 1/2a/2b/3a/3b compliance-critical for automotive and industrial surge immunity design.
Technical Context
The P6SMB91CA operates as a bipolar junction TVS diode with symmetrical avalanche breakdown in both forward and reverse directions, enabling bidirectional transient suppression without polarity sensitivity. Its glass-passivated chip junction ensures stable leakage (<1 µA @ 73.7 V) and fast response (<1.0 ps rise time from 0 V to VBR(min)).
Thermally, it supports continuous operation from –55 °C to +150 °C with RθJC = 10 °C/W and RθJA = 55 °C/W, and meets JESD201 Class 2 whisker resistance and J-STD-020 Moisture Sensitivity Level 1-making it suitable for reflow-soldered high-reliability PCBs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 73.7 V - Maximum continuous reverse operating voltage before significant leakage begins; defines safe DC line voltage margin. |
| VBR (min/max) | 81.9 V / 100 V @ 1.0 mA - Confirmed avalanche onset range; ensures predictable clamping initiation across temperature and unit variation. |
| VC @ IPPM | 131 V @ 4.8 A - Clamped voltage during 10/1000 µs surge; determines protected circuit's maximum transient stress level. |
| PPPSM | 600 W - Peak pulse power rating per 10/1000 µs waveform; quantifies single-event surge energy handling capability. |
| IR @ VWM | <1 µA - Reverse leakage at rated standoff voltage; critical for low-power standby circuits and battery-backed systems. |
| TJ(max) | +150 °C - Maximum junction temperature; sets thermal derating boundary for sustained power dissipation in enclosed environments. |
Pinout & Package
DO-214AA (SMB) surface-mount package: molded epoxy case meeting UL 94V-0 flammability rating; matte tin-plated leads compliant with J-STD-002 solderability; cathode band marking indicates polarity for unidirectional variants-absent on P6SMB91CA due to bidirectional symmetry.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bidirectional avalanche junction terminals | No functional polarity; either terminal accepts transient voltage in either direction-enables placement flexibility and eliminates orientation errors on PCB. |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures long-term stability of VBR and low leakage under humidity and thermal cycling per JESD22-A101. |
| ISO 7637-2 compliance | Validated against Pulse 1 (inductive load dump), Pulse 2a/2b (switching transients), and Pulse 3a/3b (line spikes)-required for automotive ECU front-end protection. |
| Fast response time | <1.0 ps from 0 V to VBR(min)-clamps transients before sensitive downstream ICs experience overstress. |
| RoHS & halogen-free | Complies with IEC 61249-2-21 and EU RoHS Directive 2011/65/EU-enables use in consumer electronics and green supply chains. |
Applications
| Switching Mode Power Supply (SMPS) | Television Input Protection |
|---|---|
Use Scenario: Protects primary-side rectifier output and secondary-side DC bus against lightning-induced surges and MOSFET switching spikes. IC Role / Device Role / Timing Role: Bidirectional TVS clamping element placed across bulk capacitor or post-rectifier node. Use Value: Limits transient voltage to ≤131 V during 600 W 10/1000 µs events-prevents electrolytic capacitor overvoltage failure and controller IC latch-up. | Use Scenario: Shields HDMI, AV, and antenna input stages from ESD and cable discharge events in flat-panel TVs. IC Role / Device Role / Timing Role: Low-capacitance (typ. <100 pF @ 0 V) bidirectional clamp on differential signal pairs. Use Value: Maintains signal integrity while suppressing ±15 kV contact ESD per IEC 61000-4-2 without adding jitter or insertion loss. |
| Monitor Power Rail Protection | Industrial AC-DC Adapter |
Use Scenario: Guards internal 12 V/24 V logic rails against coupling from nearby motor drives or relay switching noise. IC Role / Device Role / Timing Role: Standoff-rated TVS placed between rail and ground near connector entry point. Use Value: Withstands repeated 4.8 A pulses without degradation-ensures multi-year field reliability in commercial display installations. | Use Scenario: Safeguards secondary-side output rectifiers and feedback optocouplers in universal-input wall adapters. IC Role / Device Role / Timing Role: Bidirectional clamp across output capacitor to absorb reflected surge energy from mains transients. Use Value: 600 W rating handles worst-case 10/1000 µs surges per IEC 61000-4-5 Level 3-meets EN 61347-1 safety requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ90CA (Bourns) | Same DO-214AA package; VBR = 90–100 V; VC = 139 V @ 4.3 A; PPPSM = 600 W. | Slightly higher clamping voltage increases protected circuit stress; lower IPPM reduces margin for high-energy transients. | Select when legacy Bourns sourcing is required; verify layout compatibility via identical SMB pad dimensions. |
| 1.5SMC91CA (ON Semiconductor) | DO-214AB (SMC) package; larger footprint; VBR = 81.9–100 V; VC = 131 V @ 4.8 A; PPPSM = 1500 W. | Higher power rating suits more severe surge environments but requires PCB redesign due to SMC body size and lead spacing. | Choose for enhanced surge margin where board space allows; not drop-in compatible with P6SMB91CA's SMB footprint. |
Compared with SMBJ90CA and 1.5SMC91CA, the P6SMB91CA offers identical clamping performance and breakdown range in the smallest standardized SMB package-optimizing board area while meeting ISO 7637-2 and IEC 61000-4-5 Level 3 requirements without layout change.
Availability
P6SMB91CA is available at Aetrix Electronics and suitable for switching mode power supplies, television input protection, and industrial AC-DC adapters requiring stable component supply, consistent parametric performance, and full RoHS/halogen-free compliance.
Supply support for P6SMB91CA 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, and power MOSFETs since 1979.
The P6SMB series belongs to TSC's high-reliability surface-mount TVS platform engineered specifically for automotive-grade surge immunity (ISO 7637-2), industrial power conversion, and consumer electronics ESD protection-balancing compact SMB packaging with 600 W pulse capability.
FAQ
What is the breakdown voltage range of the P6SMB91CA?
The P6SMB91CA has a guaranteed breakdown voltage range of 81.9 V to 100 V at a test current of 1.0 mA, measured per ANSI/IEEE C62.35. This range reflects manufacturing tolerance and ensures reliable avalanche initiation across temperature and unit variance-critical for consistent clamping behavior in surge-prone applications.
Is the P6SMB91CA unidirectional or bidirectional?
The P6SMB91CA is a bidirectional TVS diode, indicated by the "CA" suffix. It provides symmetrical clamping in both polarities, eliminating the need for orientation-specific placement on PCBs and enabling protection of AC-coupled or differential signal lines without polarity concerns-unlike unidirectional variants such as P6SMB91C.
What is the maximum clamping voltage of the P6SMB91CA during a surge event?
The P6SMB91CA exhibits a maximum clamping voltage of 131 V when subjected to its rated 4.8 A peak pulse current (IPPM) under the standard 10/1000 µs waveform. This value defines the upper voltage limit imposed on protected circuitry during transient events and is confirmed per JEDEC test conditions in the official Taiwan Semiconductor datasheet.
Does the P6SMB91CA meet automotive surge immunity standards?
Yes, the P6SMB91CA meets ISO 7637-2 requirements for automotive transient immunity, including Pulse 1 (inductive load dump), Pulse 2a/2b (switching transients), and Pulse 3a/3b (capacitive coupling spikes). Its 600 W rating, low leakage, and thermal robustness make it suitable for engine control units, infotainment power inputs, and body electronics modules.
What is the package type and mounting compatibility of the P6SMB91CA?
The P6SMB91CA uses the DO-214AA (SMB) surface-mount package with matte tin-plated leads compliant with J-STD-002 solderability. Its standardized footprint supports automated pick-and-place assembly and reflow soldering per J-STD-020 Level 1 moisture sensitivity-no baking required prior to assembly.
P6SMB91CA 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):
- 77.8V
- Voltage - Breakdown (Min):
- 86.5V
- Voltage - Clamping (Max) @ Ipp:
- 125V
- Current - Peak Pulse (10/1000µs):
- 5A
- 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)
P6SMB91CA FAQ
1.How can I place an order for P6SMB91CA through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB91CA 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 P6SMB91CA reliable?
The price and inventory of P6SMB91CA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB91CA is usually 5 days.
3.What payment methods are accepted for P6SMB91CA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB91CA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB91CA?
P6SMB91CA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB91CA 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 P6SMB91CA?
For technical support, including P6SMB91CA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB91CA requirements.
6.How does Aetrix verify that P6SMB91CA is sourced from the original manufacturer or authorized distributors?
All P6SMB91CA 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 P6SMB91CA meets industry standards.
7.What is the process for return or replacement of P6SMB91CA?
All P6SMB91CA units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB91CA, 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 P6SMB91CA part is unused and in its original packaging.
Return procedure for P6SMB91CA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB91CA Tags
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