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Taiwan Semiconductor Corporation P6SMB15CA
- Part No.:
- P6SMB15CA
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB15CA.pdf
- Description:
- TVS DIODE 12.8VWM 21.2VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:5,900
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Product details
Overview
P6SMB15CA from Taiwan Semiconductor is a bidirectional 600W surface-mount transient voltage suppressor (TVS) diode designed for robust overvoltage protection in DC power rails and signal lines. It features a standoff voltage of 12.8 V, breakdown voltage range of 14.3–15.8 V at 1 mA, clamping voltage of 21.2 V at 29 A peak pulse current, and operates across –55°C to +150°C junction temperature. It is commonly deployed in AC/DC adapters and industrial power supplies.
For engineers reviewing the P6SMB15CA datasheet, P6SMB15CA pinout, P6SMB15CA application, or P6SMB15CA equivalent, key selection criteria include bidirectional clamping capability, DO-214AA (SMB) package compatibility with automated SMT assembly, low leakage (<1 µA at 12.8 V), and compliance with ISO 7637-2 Pulse 1/2a/2b/3a/3b automotive transients.
Technical Context
The P6SMB15CA implements a glass-passivated silicon avalanche junction optimized for fast transient response (<1.0 ps rise time from 0 V to VBR(min)) and stable bidirectional clamping. Its unidirectional counterpart is P6SMB15A; the "C" suffix denotes center-tap–free bidirectional configuration, enabling symmetric suppression of positive and negative transients without polarity dependence.
Thermal performance is defined by RθJC = 10°C/W and RθJA = 55°C/W, supporting reliable operation under repetitive surge conditions when mounted on standard FR-4 PCBs with adequate copper area. The device meets JESD201 Class 2 whisker resistance and UL 94V-0 flammability requirements for the molding compound.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 12.8 V - Maximum continuous reverse working voltage before significant leakage begins; defines safe operating DC bias margin. |
| VBR (min/max) | 14.3 V / 15.8 V at IT = 1 mA - Confirmed avalanche onset range; ensures predictable turn-on during overvoltage events. |
| VC @ IPPM | 21.2 V at 29 A (10/1000 µs) - Clamped voltage seen by protected circuit; limits downstream stress during 600 W surge. |
| IPPM | 29 A - Peak pulse current capability under standardized 10/1000 µs waveform; determines survivability against common ESD/EFT surges. |
| PPPSM | 600 W - Non-repetitive peak pulse power rating; defines single-event energy handling capacity per IEC 61000-4-5. |
| TJ(max) | +150°C - Maximum junction temperature; enables use in high-ambient environments such as enclosed power supplies. |
| Package | DO-214AA (SMB) - Standardized surface-mount outline with 0.090 g mass; compatible with JEDEC MS-013 and IPC-7351B footprint rules. |
Pinout & Package
DO-214AA (SMB) package: molded plastic case with matte tin-plated leads, cathode band marking for unidirectional variants; P6SMB15CA is bidirectional and marked with "KXJ" code - no polarity band required. Dimensions: 4.57 mm × 3.94 mm × 2.29 mm (L × W × H); weight ≈ 0.090 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bidirectional avalanche junction terminals | No functional distinction between terminals; either lead may connect to line or ground - enables flexible placement in differential or floating rail protection. |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures long-term stability of VBR and low parametric drift under thermal cycling and humidity exposure. |
| ISO 7637-2 compliance | Validated for automotive load-dump and switching transient immunity (Pulse 1, 2a, 2b, 3a, 3b), supporting 12 V/24 V vehicle systems. |
| Moisture sensitivity level 1 | Zero bake requirement prior to reflow; compatible with standard SMT assembly lines without dry-pack handling. |
| RoHS & halogen-free | Meets IEC 61249-2-21 and EU RoHS Directive 2011/65/EU; suitable for green manufacturing and export-compliant end products. |
Applications
| AC/DC Adapters | Industrial Power Supplies |
|---|---|
Use Scenario: Protection of secondary-side DC outputs (e.g., +12 V, +5 V rails) against line transients induced by input rectifier switching or external coupling. IC Role / Device Role / Timing Role: Standoff-mode TVS clamp placed directly across output capacitor terminals to limit voltage overshoot during fault conditions. Use Value: Limits transient voltage to ≤21.2 V, preventing damage to downstream regulators, optocouplers, and microcontrollers rated for ≤24 V absolute maximum. | Use Scenario: Input-stage surge suppression on 24 V or 48 V DC distribution buses feeding PLC I/O modules and sensor interfaces. IC Role / Device Role / Timing Role: Primary overvoltage guard at board entry point, coordinated with upstream fuses and downstream TVS arrays. Use Value: Absorbs up to 600 W of transient energy per event while maintaining <1 µA leakage at nominal bus voltage, minimizing standby power loss. |
| Automotive Infotainment Systems | Point-of-Load DC-DC Converters |
Use Scenario: Protection of USB, CAN, and LVDS interfaces in head units and display controllers exposed to battery-line transients. IC Role / Device Role / Timing Role: Bidirectional clamping element on data lines referenced to chassis ground, suppressing both positive and negative spikes. Use Value: Symmetric clamping (±21.2 V) eliminates need for dual-diode configurations, reducing BOM count and PCB area versus unidirectional solutions. | Use Scenario: Output rail protection for buck converters supplying FPGAs or ASICs where tight voltage tolerance and low noise are critical. IC Role / Device Role / Timing Role: Secondary-stage transient limiter placed after the main converter output filter to catch residual ringing and load-dump reflections. Use Value: Fast 1.0 ps response ensures clamping activation before sensitive logic thresholds are exceeded, preserving system uptime and data integrity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ15CA (Bourns) | Identical DO-214AA package, same VWM/VBR/VC specs, but higher typical IR (≤5 µA vs. ≤1 µA at VWM). | Suitable for less sensitive analog rails where slightly higher leakage is acceptable. | Select SMBJ15CA if supply chain diversification is prioritized and leakage budget allows +4 µA increase. |
| 1.5SMC15CA (ON Semiconductor) | Same electrical ratings and SMB package, but rated for 1.5 kW peak power (vs. 600 W), requiring larger PCB copper for thermal management. | Better suited for high-energy industrial surge environments (e.g., motor drive controls) where 600 W may be marginal. | Choose 1.5SMC15CA only when system-level testing confirms need for >600 W single-pulse handling and layout supports enhanced thermal dissipation. |
Compared with SMBJ15CA and 1.5SMC15CA, P6SMB15CA offers optimal balance of low leakage, ISO 7637-2 compliance, and compact SMB footprint-making it preferred for space-constrained, low-quiescent-power adapter and infotainment designs where precise clamping and minimal standby current are essential.
Availability
P6SMB15CA is available at Aetrix Electronics and suitable for AC/DC adapters, industrial power supplies, and automotive infotainment systems requiring stable component supply, consistent parametric performance, and full traceability across production batches.
Supply support for P6SMB15CA 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, with global distribution and AEC-Q200 qualified product lines.
The P6SMB series belongs to TSC's high-reliability surface-mount TVS platform engineered specifically for automotive-grade transient immunity, industrial power rail hardening, and consumer adapter safety compliance-emphasizing low leakage, fast response, and robust thermal derating.
FAQ
What is the polarity configuration of P6SMB15CA?
P6SMB15CA is a bidirectional TVS diode with symmetrical anode/cathode terminals-no polarity marking is required or present. Unlike unidirectional variants (e.g., P6SMB15A), it clamps transients of either polarity equally, making it ideal for AC-coupled lines, differential buses like CAN, or floating DC rails where voltage reversal may occur during faults.
Does P6SMB15CA meet automotive transient standards?
Yes, P6SMB15CA meets ISO 7637-2 Pulse 1, 2a, 2b, 3a, and 3b test requirements for 12 V and 24 V automotive electrical systems. Its 600 W peak pulse rating, 21.2 V clamping voltage, and fast sub-picosecond response ensure effective suppression of load dump, inductive switching, and battery connection transients without compromising system reliability.
What is the maximum steady-state power dissipation for P6SMB15CA?
The steady-state power dissipation (Ptot) of P6SMB15CA is 3 W at TA = 25°C. This rating applies only to continuous DC or low-frequency reverse-bias conditions-not transient events. In normal operation, leakage current remains below 1 µA at 12.8 V, resulting in negligible static power dissipation (<13 µW), so thermal design focuses on surge recovery rather than steady-state cooling.
How does P6SMB15CA differ from P6SMB15A?
P6SMB15CA is bidirectional with symmetrical clamping in both directions, while P6SMB15A is unidirectional and requires correct polarity orientation. Electrically, P6SMB15CA has identical VWM (12.8 V), VBR (14.3–15.8 V), and VC (21.2 V) ratings-but its marking code is "KXJ", and it lacks a cathode band. Use P6SMB15CA where polarity is undefined or reversible; use P6SMB15A only in fixed-polarity DC circuits.
Is P6SMB15CA compatible with lead-free reflow soldering processes?
Yes, P6SMB15CA is fully compatible with standard lead-free reflow profiles (JEDEC J-STD-020 Level 1), including peak temperatures up to 260°C. Its moisture sensitivity level is rated at MSL 1, meaning it can be stored indefinitely at ambient conditions without baking-eliminating pre-reflow dry-out steps and simplifying SMT line integration.
P6SMB15CA 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):
- 12.8V
- Voltage - Breakdown (Min):
- 14.3V
- Voltage - Clamping (Max) @ Ipp:
- 21.2V
- Current - Peak Pulse (10/1000µs):
- 29A
- 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)
P6SMB15CA FAQ
1.How can I place an order for P6SMB15CA through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB15CA 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 P6SMB15CA reliable?
The price and inventory of P6SMB15CA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB15CA is usually 5 days.
3.What payment methods are accepted for P6SMB15CA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB15CA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB15CA?
P6SMB15CA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB15CA 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 P6SMB15CA?
For technical support, including P6SMB15CA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB15CA requirements.
6.How does Aetrix verify that P6SMB15CA is sourced from the original manufacturer or authorized distributors?
All P6SMB15CA 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 P6SMB15CA meets industry standards.
7.What is the process for return or replacement of P6SMB15CA?
All P6SMB15CA units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB15CA, 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 P6SMB15CA part is unused and in its original packaging.
Return procedure for P6SMB15CA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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