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Taiwan Semiconductor Corporation P6SMB27H
- Part No.:
- P6SMB27H
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB27H.pdf
- Description:
- 600W, 27V, 10%, UNIDIRECTIONAL,
- Quantity:
- Payment:
- Shipping:
Inventory:8,832
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Product details
Overview
P6SMB27H from Taiwan Semiconductor is a unidirectional 600W surface-mount Transient Voltage Suppressor (TVS) diode with a breakdown voltage range of 24.3–29.7 V, stand-off voltage of 21.8 V, and clamping voltage of 39.1 V at 16 A peak pulse current. It features glass-passivated junction, AEC-Q101 qualification, and meets ISO 7637-2 Pulse 1/2a/2b/3a/3b for automotive load-dump and EFT immunity.
For engineers reviewing the P6SMB27H datasheet, P6SMB27H pinout, P6SMB27H application, or P6SMB27H equivalent, this device is selected for robust overvoltage protection in automotive power rails, industrial sensor interfaces, and DC-DC converter input stages where fast clamping (<1 ps response), low leakage (<1 µA @ 21.8 V), and DO-214AA package compatibility are critical.
Technical Context
The P6SMB27H operates as a unidirectional avalanche diode, conducting only in reverse-biased transient events above its VBR min (24.3 V). Its 10/1000 µs waveform-rated 600 W peak pulse power and 39.1 V clamping voltage at 16 A ensure reliable suppression of high-energy transients without system latch-up.
Thermal performance is defined by RθJC = 10 °C/W and RθJA = 55 °C/W, supporting operation up to +150 °C junction temperature. The DO-214AA (SMB) package enables automated placement and complies with JESD201 Class 2 whisker resistance and J-STD-020 Moisture Sensitivity Level 1.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 24.3 V / 29.7 V - Ensures consistent avalanche initiation across production lot and temperature; guarantees clamping begins no later than 29.7 V under 1 mA test current. |
| VWM | 21.8 V - Maximum continuous reverse operating voltage; allows safe operation below breakdown with <1 µA leakage. |
| VC @ IPPM | 39.1 V at 16 A - Clamped voltage during 10/1000 µs surge; limits downstream IC stress to ≤39.1 V under worst-case 600 W transient. |
| PPPSM | 600 W - Peak pulse power rating per 10/1000 µs waveform; defines maximum transient energy absorption capability. |
| TJ max | +150 °C - Maximum junction temperature; supports under-hood automotive use and high-ambient industrial environments. |
| IR @ VWM | <1 µA - Ultra-low reverse leakage ensures minimal standby power loss and signal integrity in high-impedance circuits. |
| Response time | <1.0 ps - Sub-picosecond junction response enables protection against ESD and fast EFT pulses before sensitive circuitry reacts. |
Pinout & Package
Package: DO-214AA (SMB), surface-mount, cathode-banded unidirectional configuration. Matte tin-plated leads, UL 94V-0 molding compound, 0.090 g typical weight.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (non-banded end) | Forward conduction terminal | Connected to lower-potential side (e.g., GND or return path); conducts during forward surge (e.g., reverse battery events if used bidirectionally with external diode). |
| Cathode (banded end) | Reverse avalanche terminal | Connected to protected line (e.g., 24 V rail); initiates clamping when transient exceeds VBR, shunting current to ground. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, humidity bias, and mechanical shock - suitable for engine control, body electronics, and ADAS power domains. |
| Glass-passivated junction | Enhances long-term stability and moisture resistance versus epoxy-passivated alternatives; maintains VBR tolerance and leakage performance over 15+ year service life. |
| ISO 7637-2 compliance | Withstands Pulse 1 (inductive load dump), Pulse 2a/2b (switching transients), and Pulse 3a/3b (EFT) without degradation - eliminates need for external filtering in 12/24 V vehicle systems. |
| Low-profile SMB package | 3.56 mm × 4.57 mm footprint with 2.3 mm height - enables dense PCB layouts in space-constrained ECUs and industrial controllers while supporting reflow and wave soldering. |
| 10/1000 µs waveform rating | Rated for standard automotive and industrial surge profiles; derates predictably above 25 °C ambient per published curve (Fig.2), enabling accurate thermal margining in real-world enclosures. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
|
Use Scenario: 24 V supply line in engine control unit exposed to load-dump transients up to 35 V and ISO 7637-2 Pulse 1. IC Role / Device Role: Primary clamping element placed between battery feed and DC-DC converter input. Use Value: Limits voltage to ≤39.1 V during 600 W surge, preventing damage to 40 V-rated buck controller and preserving system uptime. |
Use Scenario: 4–20 mA current-loop transmitter connected to PLC analog input, subject to EFT bursts and cable-induced surges. IC Role / Device Role: Input-side TVS on signal conditioning front-end, located before precision op-amp and ADC driver. Use Value: Sub-1 ps response clamps transients before op-amp input stage saturates, maintaining measurement accuracy and avoiding reset events. |
| DC-DC Converter Input Stage | LED Driver Overvoltage Clamp |
|
Use Scenario: 24 V input to isolated flyback converter powering safety-critical logic in factory automation controller. IC Role / Device Role: First-line transient suppressor upstream of input bulk capacitor and primary-side controller. Use Value: Absorbs repetitive switching noise and accidental 120 VAC cross-connect events without degrading, thanks to 600 W non-repetitive rating and 150 °C TJ limit. |
Use Scenario: Constant-current LED string driver in outdoor signage subjected to lightning-induced surges on 24 V DC distribution lines. IC Role / Device Role: Parallel-connected clamp across LED string input terminals to prevent overvoltage failure of driver IC and LEDs. Use Value: 39.1 V clamping protects 36 V-rated LED drivers and avoids catastrophic open-circuit failure during 1 kV ESD events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ27A | Same DO-214AA package, 27 V nominal VBR, but VC = 43.5 V @ 13.8 A (lower peak pulse power: 600 W same, but higher clamping voltage). | Higher clamping reduces margin for 40 V-rated downstream ICs; less suitable for tight-voltage-margin designs. | Select P6SMB27H when clamping voltage ≤39.1 V is required to protect 40 V max-input devices. |
| 1.5SMC27H | DO-214AB (SMC) package - larger footprint (7.11 mm × 6.22 mm), higher IPPM (22.5 A), but same VBR and VC specs. | Requires PCB layout change; better for high-surge industrial sites but incompatible with SMB-constrained boards. | Choose P6SMB27H for space-constrained automotive modules where DO-214AA is mandated by mechanical envelope. |
Compared with SMBJ27A and 1.5SMC27H, the P6SMB27H delivers the lowest clamping voltage in the DO-214AA form factor and is uniquely AEC-Q101 qualified among 27 V SMB TVS diodes - making it the preferred choice for automotive and high-reliability industrial 24 V systems requiring both compact size and certified robustness.
Availability
P6SMB27H is available at Aetrix Electronics and suitable for automotive power rail protection, industrial sensor interface hardening, and DC-DC converter input stage surge suppression requiring stable component supply, full traceability, and long-lifecycle support.
Supply support for P6SMB27H 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 capability.
The P6SMB27H belongs to TSC's P6SMBxH series of automotive-grade TVS diodes, engineered specifically for ISO 7637-2 compliance and under-hood reliability in 12 V/24 V vehicle electrical systems.
FAQ
What is the maximum clamping voltage of the P6SMB27H under standard test conditions?
The P6SMB27H has a maximum clamping voltage (VC) of 39.1 V when subjected to a 10/1000 µs waveform peak pulse current of 16 A. This value is measured at TA = 25 °C and defines the upper voltage limit imposed on protected circuitry during transient events. The P6SMB27H maintains this clamping performance across its specified junction temperature range.
Is the P6SMB27H suitable for automotive applications?
Yes, the P6SMB27H is AEC-Q101 qualified and explicitly designed for automotive use. It meets ISO 7637-2 Pulse 1 (load dump), Pulse 2a/2b (switching transients), and Pulse 3a/3b (electrical fast transients), making it appropriate for engine control units, body control modules, and ADAS power domains. The P6SMB27H's DO-214AA package and +150 °C TJ rating further support under-hood deployment.
What is the standoff voltage (VWM) and why does it matter for P6SMB27H circuit design?
The P6SMB27H has a standoff voltage (VWM) of 21.8 V, meaning it remains non-conductive up to this reverse voltage during normal operation. This parameter ensures minimal leakage (<1 µA) and prevents false triggering on nominal 24 V systems. Designers must verify that maximum steady-state rail voltage stays below 21.8 V to avoid premature conduction - a key constraint when selecting the P6SMB27H for 24 V applications.
Does the P6SMB27H have polarity markings, and how is it oriented on the PCB?
Yes, the P6SMB27H uses a unidirectional DO-214AA (SMB) package with a visible cathode band printed on the molded case. During PCB layout, the banded end must connect to the line being protected (e.g., 24 V rail), while the non-banded end connects to ground or return. Incorrect orientation renders the P6SMB27H ineffective against reverse transients and may cause forward conduction during normal operation.
How does the P6SMB27H compare to bidirectional TVS diodes like P6SMB27AH?
The P6SMB27H is unidirectional and optimized for DC applications with defined polarity, offering lower leakage and tighter VBR tolerance than its bidirectional counterpart P6SMB27AH. The P6SMB27AH supports AC or floating-line protection but exhibits higher capacitance and slightly reduced clamping efficiency. Use the P6SMB27H when protecting polarized 24 V rails; select P6SMB27AH only when bidirectional surge paths (e.g., data lines or AC-coupled sensors) require symmetrical clamping.
P6SMB27H 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):
- 21.8V
- Voltage - Breakdown (Min):
- 24.3V
- Voltage - Clamping (Max) @ Ipp:
- 39.1V
- Current - Peak Pulse (10/1000µs):
- 16A
- 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)
P6SMB27H FAQ
1.How can I place an order for P6SMB27H through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB27H 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 P6SMB27H reliable?
The price and inventory of P6SMB27H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB27H is usually 5 days.
3.What payment methods are accepted for P6SMB27H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB27H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB27H?
P6SMB27H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB27H 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 P6SMB27H?
For technical support, including P6SMB27H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB27H requirements.
6.How does Aetrix verify that P6SMB27H is sourced from the original manufacturer or authorized distributors?
All P6SMB27H 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 P6SMB27H meets industry standards.
7.What is the process for return or replacement of P6SMB27H?
All P6SMB27H units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB27H, 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 P6SMB27H part is unused and in its original packaging.
Return procedure for P6SMB27H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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