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Taiwan Semiconductor Corporation P6SMB20H
- Part No.:
- P6SMB20H
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB20H.pdf
- Description:
- 600W, 20V, 10%, UNIDIRECTIONAL,
- Quantity:
- Payment:
- Shipping:
Inventory:4,534
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Product details
Overview
P6SMB20H from Taiwan Semiconductor is a unidirectional 600W surface-mount transient voltage suppressor (TVS) diode with a breakdown voltage range of 18.0–22.0 V, stand-off voltage of 16.2 V, and clamping voltage of 29.1 V at 21 A peak pulse current - designed for automotive-grade ESD and load-dump protection in power supply rails and signal lines.
For engineers reviewing the P6SMB20H datasheet, P6SMB20H pinout, P6SMB20H application, or P6SMB20H equivalent, key selection criteria include its AEC-Q101 qualification, DO-214AA (SMB) package compatibility, 1.0 mA test current specification, <1 μA reverse leakage at 16.2 V, and ISO 7637-2 Pulse 1/2a/2b/3a/3b compliance for automotive transients.
Technical Context
The P6SMB20H operates as a unidirectional avalanche diode, leveraging glass-passivated junction technology to achieve fast response (<1.0 ps from 0 V to VBR(min)) and stable clamping under repetitive surge stress. Its thermal design supports 150°C maximum junction temperature with RθJC = 10°C/W and RθJA = 55°C/W.
It delivers 600 W non-repetitive peak pulse power (10/1000 μs waveform), with steady-state power dissipation rated at 3 W at 25°C ambient. The device exhibits a positive temperature coefficient of VBR (0.090 %/°C), ensuring predictable voltage drift across operating temperature ranges.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 18.0 V / 22.0 V - defines minimum and maximum guaranteed avalanche initiation voltage at 1.0 mA test current |
| VWM | 16.2 V - maximum continuous reverse working voltage before significant leakage begins |
| VC @ IPPM | 29.1 V at 21 A - clamping voltage during 10/1000 μs surge, limiting downstream circuit stress |
| IPPM | 21 A - peak pulse current capability under standard 10/1000 μs waveform |
| ID @ VWM | <1 μA - ensures negligible standby power loss and signal integrity in high-impedance circuits |
| TJ(max) | 150 °C - enables reliable operation in under-hood automotive environments and industrial power systems |
| Package | DO-214AA (SMB) - industry-standard surface-mount outline with 0.090 g mass and J-STD-002 solderability |
Pinout & Package
DO-214AA (SMB) package: molded plastic case with matte tin-plated leads, cathode band marking polarity, UL 94V-0 flammability rating, and JESD201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential side (e.g., ground or return path) in unidirectional TVS configuration |
| Cathode | Avalanche clamping terminal | Connected to protected line (e.g., 12 V rail or CAN bus); conducts when transient exceeds VBR |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control units, body electronics, and infotainment power supplies |
| Glass passivated junction | Enhances long-term reliability and stability of VBR under thermal cycling and humidity exposure |
| ISO 7637-2 compliance | Meets Pulse 1 (inductive load dump), Pulse 2a/2b (switching transients), and Pulse 3a/3b (ESD/coupled noise) immunity requirements |
| Moisture sensitivity level 1 | Enables standard SMT reflow without baking or special handling per J-STD-020 |
| RoHS & halogen-free | Complies with IEC 61249-2-21 and EU RoHS Directive for environmentally constrained designs |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs against load-dump transients up to ±100 V and ISO 7637-2 Pulse 1 events. IC Role / Device Role / Timing Role: Unidirectional TVS clamping element placed between power input and ground, activated within picoseconds of overvoltage onset. Use Value: Limits voltage seen by downstream DC-DC converters and microcontrollers to ≤29.1 V, preventing latch-up or permanent damage. | Use Scenario: Safeguarding analog sensor outputs (e.g., pressure, temperature) connected to PLC I/O modules exposed to field wiring surges. IC Role / Device Role / Timing Role: Standoff-mode protector on low-current signal lines, maintaining signal fidelity until clamping threshold is exceeded. Use Value: Adds <1 μA leakage at 16.2 V, preserving measurement accuracy while absorbing 600 W transients without degradation. |
| LED Lighting Driver Input Protection | Automotive CAN Bus Line Protection |
Use Scenario: Shielding constant-current LED drivers from inductive kickback during MOSFET switching in headlamp modules. IC Role / Device Role / Timing Role: Fast-acting shunt device parallel to input capacitor, diverting energy away from driver IC during turn-off spikes. Use Value: Clamps transients to 29.1 V within <1 ps, enabling use of lower-voltage-rated input capacitors and reducing BOM cost. | Use Scenario: Supplementing primary CAN transceiver ESD protection on vehicle network nodes subject to cable coupling and hot-swap events. IC Role / Device Role / Timing Role: Secondary clamping stage on CAN_H/CAN_L lines, triggered after internal transceiver clamp saturation. Use Value: Extends system-level robustness beyond IEC 61000-4-2 (±25 kV air/±20 kV contact) by handling higher-energy ISO 7637-2 pulses. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ20A | Same DO-214AA package, bidirectional variant with symmetric VBR (18.9–21.0 V), slightly higher VC (32.4 V @ 19.5 A) | Required where bidirectional protection is needed (e.g., AC-coupled data lines or dual-rail systems) | Select SMBJ20A only if polarity-agnostic clamping is required; P6SMB20H offers tighter unidirectional VBR tolerance and lower clamping voltage. |
| 1.5SMC20A | Larger DO-214AB (SMC) package, same 20 V nominal rating but higher IPPM (32.4 A) and VC (32.5 V), 1500 W rating | Suitable for higher-energy surge environments where PCB space allows larger footprint | Choose 1.5SMC20A when >600 W surge margin is required; P6SMB20H provides optimal density for space-constrained automotive modules. |
Compared with SMBJ20A and 1.5SMC20A, the P6SMB20H delivers the lowest clamping voltage (29.1 V) in the smallest DO-214AA footprint while maintaining AEC-Q101 qualification - making it preferred for compact, high-reliability 12 V rail protection where unidirectional behavior is sufficient.
Availability
P6SMB20H is available at Aetrix Electronics and suitable for automotive ECU power protection, industrial sensor interface hardening, and LED driver input surge suppression requiring stable component supply and full traceability.
Supply support for P6SMB20H 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 belongs to TSC's automotive-qualified transient voltage suppressor product line, engineered specifically for robust, high-density protection of 12 V and 24 V vehicle electrical systems against ISO 7637-2 and IEC 61000-4-5 threats.
FAQ
What is the polarity configuration of the P6SMB20H?
The P6SMB20H is a unidirectional TVS diode, with cathode marked by a band on the DO-214AA package. It conducts only when the cathode is at a higher potential than the anode - ideal for protecting positive power rails relative to ground. This differs from bidirectional variants like P6SMB20AH, which protect both polarities.
Does the P6SMB20H meet automotive qualification standards?
Yes, the P6SMB20H is AEC-Q101 qualified and tested per ISO 7637-2 Pulse 1, 2a, 2b, 3a, and 3b waveforms. Its glass-passivated junction, MSL Level 1 moisture rating, and 150°C junction temperature rating confirm suitability for under-hood and chassis-mounted automotive applications.
What is the maximum clamping voltage of the P6SMB20H under surge conditions?
The P6SMB20H has a maximum clamping voltage (VC) of 29.1 V at 21 A peak pulse current (10/1000 μs waveform). This value is guaranteed across temperature and lifetime, ensuring downstream components see no more than 29.1 V during standardized surge events.
Can the P6SMB20H be used in bidirectional signal line protection?
No - the P6SMB20H is unidirectional and unsuitable for AC or differential signal lines requiring symmetrical clamping. For such use cases, select the bidirectional P6SMB20AH or SMBJ20A. Using P6SMB20H on bidirectional lines risks forward conduction during negative transients and potential failure.
What is the reverse leakage current specification for the P6SMB20H at its stand-off voltage?
At its VWM of 16.2 V, the P6SMB20H exhibits a maximum reverse leakage current (ID) of 1 μA at 25°C. This ultra-low leakage preserves signal integrity in high-impedance sensor interfaces and minimizes quiescent power loss in always-on automotive modules.
P6SMB20H 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):
- 16.2V
- Voltage - Breakdown (Min):
- 18V
- Voltage - Clamping (Max) @ Ipp:
- 29.1V
- Current - Peak Pulse (10/1000µs):
- 21A
- 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)
P6SMB20H FAQ
1.How can I place an order for P6SMB20H through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB20H 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 P6SMB20H reliable?
The price and inventory of P6SMB20H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB20H is usually 5 days.
3.What payment methods are accepted for P6SMB20H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB20H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB20H?
P6SMB20H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB20H 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 P6SMB20H?
For technical support, including P6SMB20H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB20H requirements.
6.How does Aetrix verify that P6SMB20H is sourced from the original manufacturer or authorized distributors?
All P6SMB20H 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 P6SMB20H meets industry standards.
7.What is the process for return or replacement of P6SMB20H?
All P6SMB20H units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB20H, 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 P6SMB20H part is unused and in its original packaging.
Return procedure for P6SMB20H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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