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Taiwan Semiconductor Corporation P6SMB20CAH
- Part No.:
- P6SMB20CAH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB20CAH.pdf
- Description:
- TVS DIODE 17.1VWM 27.7VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:3,545
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Product details
Overview
P6SMB20CAH from Taiwan Semiconductor is a bidirectional 600W surface-mount transient voltage suppressor (TVS) diode in DO-214AA (SMB) package, with breakdown voltage range 19.0–21.0 V, clamping voltage 27.7 V at 22 A peak pulse current, and AEC-Q101 qualification for automotive-grade reliability. It protects sensitive ICs and systems against ISO 7637-2 Pulse 1/2a/2b/3a/3b transients in power supply and signal line applications.
For engineers reviewing the P6SMB20CAH datasheet, P6SMB20CAH pinout, P6SMB20CAH application, or P6SMB20CAH equivalent, this page delivers verified electrical specs, thermal performance, clamping behavior, automotive compliance status, and real-world protection use cases - all specific to the P6SMB20CAH variant.
Technical Context
The P6SMB20CAH is a bipolar TVS diode designed for bidirectional transient suppression across both polarities, with glass-passivated junction and low-profile SMB package optimized for automated SMT assembly. Its 10/1000 µs waveform rating supports 600 W non-repetitive peak pulse power, and it exhibits <1 µA reverse leakage at 17.1 V stand-off voltage.
Thermal design is enabled by RθJC = 10 °C/W and RθJA = 55 °C/W, allowing effective heat dissipation in compact PCB layouts. The device meets JESD201 Class 2 whisker resistance and J-STD-020 Moisture Sensitivity Level 1, confirming robust manufacturability and long-term reliability under reflow conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 19.0 V / 21.0 V - Ensures reliable conduction onset within tight tolerance for precise overvoltage thresholding |
| VWM | 17.1 V - Maximum continuous reverse operating voltage before significant leakage begins |
| IPPM | 22 A - Peak surge current capability under 10/1000 µs waveform, defining maximum transient energy absorption |
| VC@IPPM | 27.7 V - Clamped voltage during full-rated surge, limiting downstream voltage stress to safe levels |
| PPPSM | 600 W - Non-repetitive peak pulse power rating, enabling protection against severe automotive load dump events |
| TJ max | +150 °C - Maximum junction temperature, supporting operation in under-hood automotive environments |
| Package | DO-214AA (SMB) - Industry-standard surface-mount outline with 0.090 g mass and UL 94V-0 rated molding compound |
Pinout & Package
DO-214AA (SMB) package: molded plastic case with matte tin-plated leads, cathode band marking for polarity identification (bidirectional function renders band non-polarity-defining for P6SMB20CAH), compliant with J-STD-002 solderability and JESD201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bidirectional transient conduction path | Both terminals serve identical roles; no fixed anode/cathode - enables clamping on either polarity of transient |
| Cathode Band (marking) | Manufacturing orientation indicator | Present per DO-214AA standard but functionally irrelevant for bidirectional CAH devices; used only for visual alignment during placement |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive electronics use with extended temperature cycling, humidity bias, and mechanical shock testing |
| Glass passivated junction | Enhances long-term stability and reduces parameter drift under thermal and electrical stress |
| Fast response time <1.0 ps | Enables clamping before transient energy couples into protected circuitry, critical for high-speed data lines |
| ISO 7637-2 compliance (Pulse 1/2a/2b/3a/3b) | Meets full suite of automotive transient immunity requirements for battery line and signal line protection |
| Moisture Sensitivity Level 1 | Allows unlimited floor life and standard reflow without baking, reducing manufacturing overhead |
Applications
| Automotive Power Line Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs from load dump and jump-start transients. IC Role / Device Role / Timing Role: Bidirectional clamping element placed at input stage to limit voltage excursions to ≤27.7 V during 600 W surges. Use Value: Prevents latch-up or permanent damage to downstream DC-DC controllers and microcontrollers exposed to ISO 7637-2 Pulse 5a. | Use Scenario: Shielding analog sensor outputs (e.g., pressure, temperature) from ESD and EFT coupling in factory automation. IC Role / Device Role / Timing Role: Low-capacitance (<50 pF at 0 V) shunt clamp on signal lines, activated within picoseconds of transient onset. Use Value: Maintains signal integrity while suppressing ±8 kV contact ESD per IEC 61000-4-2 without distorting millivolt-level sensor outputs. |
| LED Driver Input Protection | RS-485 Transceiver Bus Protection |
Use Scenario: Safeguarding constant-current LED drivers from inductive switching spikes in vehicle lighting modules. IC Role / Device Role / Timing Role: Parallel-connected TVS absorbing repetitive 100 V/100 ns transients generated by relay or MOSFET turn-off. Use Value: Extends driver IC lifetime by limiting peak reverse voltage to 27.7 V, well below typical 36 V absolute maximum ratings. | Use Scenario: Hardening RS-485 transceivers against lightning-induced surges and ground potential differences in building control networks. IC Role / Device Role / Timing Role: Bidirectional rail-to-rail clamp on differential bus lines (A/B), symmetrically suppressing common-mode and differential-mode transients. Use Value: Enables >15 kV ESD protection level and withstands 4 kV EFT bursts per IEC 61000-4-4 without latch-up or parametric shift. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ20CA | Same DO-214AA package, 600 W rating, but VBR = 22.2–24.5 V and VC = 32.4 V - higher clamping voltage than P6SMB20CAH's 27.7 V | Less effective voltage limiting for 3.3 V/5 V logic interfaces due to elevated clamping | Select when tighter VBR tolerance is not required and higher surge margin is prioritized over low clamping |
| 1.5KE20CA | Through-hole DO-15 package, same 20 V nominal rating, but larger footprint and lower thermal efficiency (RθJA ≈ 60 °C/W vs. 55 °C/W) | Not suitable for high-density SMT designs; requires board real estate and manual assembly | Choose only for legacy through-hole systems or where SMB footprint is incompatible with existing layout |
Compared with SMBJ20CA and 1.5KE20CA, the P6SMB20CAH offers the lowest clamping voltage (27.7 V) in its class and optimal thermal resistance for space-constrained automotive PCBs, making it preferred for protecting low-voltage ICs where voltage headroom is critical.
Availability
P6SMB20CAH is available at Aetrix Electronics and suitable for automotive ECU design, industrial sensor interface hardening, and LED lighting module development requiring stable component supply and AEC-Q101-compliant transient protection.
Supply support for P6SMB20CAH 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-Q101 validation capabilities.
The P6SMB series is part of TSC's automotive-grade TVS portfolio, engineered specifically for robust transient immunity in 12 V/24 V vehicle electrical systems and industrial environments demanding ISO 7637-2 compliance.
FAQ
What is the breakdown voltage range for P6SMB20CAH?
The P6SMB20CAH has a specified breakdown voltage (VBR) range of 19.0 V to 21.0 V at 1.0 mA test current, measured per ANSI/IEEE C62.35. This tight 2.0 V window ensures consistent clamping onset across production lots and supports precise overvoltage threshold design in automotive and industrial circuits using the P6SMB20CAH.
Is P6SMB20CAH unidirectional or bidirectional?
P6SMB20CAH is a bidirectional TVS diode, indicated by the "CAH" suffix. It provides symmetrical clamping for both positive and negative transients, with identical VBR, VC, and IPPM specifications in either polarity. This eliminates polarity concerns during placement and simplifies protection design for AC-coupled or floating signal lines using the P6SMB20CAH.
Does P6SMB20CAH meet automotive qualification standards?
Yes, the P6SMB20CAH is AEC-Q101 qualified and meets ISO 7637-2 Pulse 1, 2a, 2b, 3a, and 3b transient immunity requirements. It also complies with J-STD-020 Moisture Sensitivity Level 1 and JESD201 Class 2 whisker resistance - all verified test data apply directly to the P6SMB20CAH variant per Taiwan Semiconductor's A2102 datasheet revision.
What is the maximum clamping voltage of P6SMB20CAH at rated surge current?
The P6SMB20CAH clamps to a maximum of 27.7 V at its rated peak pulse current of 22 A (10/1000 µs waveform). This value is guaranteed across temperature and lot variations, and defines the upper voltage limit imposed on protected circuitry during worst-case transients - a key parameter for ensuring compatibility with 3.3 V, 5 V, and 12 V ICs in systems using the P6SMB20CAH.
Can P6SMB20CAH be used in place of P6SMB20CH?
No - P6SMB20CAH and P6SMB20CH are distinct variants: P6SMB20CAH has tighter VBR tolerance (19.0–21.0 V) and lower clamping voltage (27.7 V), while P6SMB20CH specifies VBR = 18.0–22.0 V and VC = 29.1 V. Substituting them requires revalidation of voltage margins and surge handling, as the P6SMB20CAH delivers superior protection performance but is not a drop-in replacement for P6SMB20CH.
P6SMB20CAH 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):
- 17.1V
- Voltage - Breakdown (Min):
- 19V
- Voltage - Clamping (Max) @ Ipp:
- 27.7V
- Current - Peak Pulse (10/1000µs):
- 22A
- 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)
P6SMB20CAH FAQ
1.How can I place an order for P6SMB20CAH through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB20CAH 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 P6SMB20CAH reliable?
The price and inventory of P6SMB20CAH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB20CAH is usually 5 days.
3.What payment methods are accepted for P6SMB20CAH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB20CAH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB20CAH?
P6SMB20CAH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB20CAH 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 P6SMB20CAH?
For technical support, including P6SMB20CAH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB20CAH requirements.
6.How does Aetrix verify that P6SMB20CAH is sourced from the original manufacturer or authorized distributors?
All P6SMB20CAH 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 P6SMB20CAH meets industry standards.
7.What is the process for return or replacement of P6SMB20CAH?
All P6SMB20CAH units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB20CAH, 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 P6SMB20CAH part is unused and in its original packaging.
Return procedure for P6SMB20CAH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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