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Taiwan Semiconductor Corporation P6SMB12H
- Part No.:
- P6SMB12H
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB12H.pdf
- Description:
- 600W, 12V, 10%, UNIDIRECTIONAL,
- Quantity:
- Payment:
- Shipping:
Inventory:6,697
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Product details
Overview
P6SMB12H from Taiwan Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode designed for high-energy surge protection in automotive and industrial power rails. It features a 10.8–13.2 V breakdown voltage (VBR), 9.72 V stand-off voltage (VWM), 17.3 V clamping voltage at 36 A peak pulse current, 600 W peak pulse power rating, and AEC-Q101 qualification - enabling robust ESD and ISO 7637-2 Pulse 1/2a/2b/3a/3b protection in 12 V automotive subsystems.
For engineers reviewing the P6SMB12H datasheet, P6SMB12H pinout, P6SMB12H application, or P6SMB12H equivalent, this device is selected for its low-leakage (<1 µA @ 9.72 V), fast sub-1 ps response time, DO-214AA (SMB) package compatibility with automated placement, and verified clamping performance under repetitive transients in battery-supplied ECUs and lighting modules.
Technical Context
The P6SMB12H operates as a unidirectional avalanche diode, conducting only when reverse voltage exceeds its specified VBR range (10.8–13.2 V at 1.0 mA test current). Its glass-passivated junction ensures stable breakdown characteristics and low leakage, while its thermal resistance (RθJA = 55 °C/W) supports operation up to +150 °C junction temperature in constrained PCB layouts.
It meets ISO 7637-2 immunity requirements for automotive electronics by limiting induced transients to ≤17.3 V during 10/1000 µs surges up to 36 A, with clamping energy dissipated within its 600 W non-repetitive PPPSM rating. Polarity is marked via cathode band on the DO-214AA case, and moisture sensitivity is rated J-STD-020 Level 1.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 10.8 V / 13.2 V - defines reliable turn-on threshold across production lot and temperature |
| VWM | 9.72 V - maximum continuous reverse voltage before significant leakage begins |
| VC @ IPPM | 17.3 V at 36 A - clamped voltage seen by protected IC during worst-case 10/1000 µs surge |
| IPPM | 36 A - peak transient current the device safely shunts without degradation |
| PPPSM | 600 W - non-repetitive surge power handling per JEDEC/ISO standards |
| IR @ VWM | <1 µA - ultra-low leakage preserves standby power in always-on vehicle modules |
| TJ max | +150 °C - enables use in under-hood environments without derating |
Pinout & Package
Package: DO-214AA (SMB), surface-mount, single-diode configuration with cathode band marking. Matte tin-plated leads meet J-STD-002 solderability; weight ≈ 0.090 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to ground or low-side return path in unidirectional TVS configuration |
| Cathode | Reverse-biased surge input terminal | Connected to protected line (e.g., 12 V rail); cathode band identifies polarity on package |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD stress |
| Glass passivated junction | Ensures stable VBR, low leakage drift, and long-term parameter consistency |
| Clamping voltage ≤17.3 V | Protects downstream 12 V logic and analog ICs (e.g., CAN transceivers, MCU I/O) from overvoltage damage |
| Response time <1.0 ps | Engages before most system-level transients propagate, minimizing unprotected exposure window |
| Meets ISO 7637-2 Pulse 1/2a/2b/3a/3b | Complies with full suite of automotive supply-line transient immunity requirements |
Applications
| Automotive Body Control Module (BCM) | LED Headlamp Driver Protection |
|---|---|
Use Scenario: Protects microcontroller I/O and LIN bus interface from load-dump and inductive switching spikes on 12 V supply lines. IC Role / Device Role: Unidirectional TVS placed between 12 V rail and ground, upstream of DC-DC converter input. Use Value: Limits transient voltage to ≤17.3 V, preventing latch-up or gate oxide damage in 3.3 V/5 V logic powered from buck-regulated outputs. | Use Scenario: Shields constant-current LED driver ICs from ESD events and relay-coil flyback during headlamp on/off cycling. IC Role / Device Role: TVS connected across LED string input terminals to clamp reverse EMF and contact discharge. Use Value: Withstands 600 W surges while maintaining <1 µA leakage, avoiding false triggering or standby current increase in always-on lighting systems. |
| Industrial 24 V PLC Input Protection | Automotive Rear Combination Lamp ECU |
Use Scenario: Guards optocoupler inputs and signal conditioning circuits against field-wiring transients in factory automation I/O modules. IC Role / Device Role: Mounted at connector entry point on 24 V digital input channel, referenced to common ground. Use Value: Clamps 10/1000 µs surges to ≤17.3 V, ensuring signal integrity and preventing false edge detection in microcontroller GPIOs. | Use Scenario: Safeguards CAN FD transceiver and flash memory in rear lamp control unit exposed to battery disconnect/load dump events. IC Role / Device Role: Placed on VBAT line prior to LDO regulator, with cathode to rail and anode to chassis ground. Use Value: AEC-Q101 qualification and 150 °C TJ rating ensure uninterrupted operation in sealed, thermally limited lamp housings. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ12A | Bi-directional configuration; VBR min/max = 13.3/14.7 V; higher VC = 19.9 V at 30.1 A | Supports AC-coupled or bidirectional signal lines; not suitable for DC rail-only unidirectional protection | Select SMBJ12A only if bidirectional surge immunity (e.g., data lines) is required; P6SMB12H offers lower clamping for 12 V DC rails. |
| 1.5SMC12AH | Same unidirectional function but in larger DO-214AB (SMC) package; VC = 18.2 V at 33 A; RθJA = 40 °C/W | Higher thermal mass allows longer surge duration handling; requires larger PCB footprint | Choose 1.5SMC12AH when board space permits and higher IPPM endurance (>36 A) or lower thermal resistance is needed. |
Compared with SMBJ12A and 1.5SMC12AH, the P6SMB12H delivers tighter VBR tolerance (10.8–13.2 V), lower clamping (17.3 V), and optimized DO-214AA footprint for high-density automotive PCBs - making it preferred for space-constrained 12 V rail protection where unidirectional behavior suffices.
Availability
P6SMB12H is available at Aetrix Electronics and suitable for automotive body electronics, LED lighting drivers, and industrial PLC input protection requiring stable component supply, AEC-Q101 compliance, and consistent 600 W surge capability.
Supply support for P6SMB12H 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 for automotive, industrial, and consumer markets.
The P6SMB12H belongs to TSC's AEC-Q101-qualified P6SMBxH series - engineered specifically for robust, low-profile transient suppression in automotive 12 V systems, with emphasis on ISO 7637-2 compliance and automated SMT assembly.
FAQ
What is the breakdown voltage range of the P6SMB12H?
The P6SMB12H has a guaranteed breakdown voltage (VBR) range of 10.8 V to 13.2 V at 1.0 mA test current, measured per ANSI/IEEE C62.35. This range ensures reliable turn-on across manufacturing variation and temperature, and is confirmed in TSC's official electrical specifications table for the P6SMB12H device marking code KSJ.
Is the P6SMB12H unidirectional or bidirectional?
The P6SMB12H is a unidirectional TVS diode, indicated by the absence of "C" or "CA" suffix and confirmed by its cathode-band polarity marking and forward voltage specification (VF = 3.5 V @ 50 A). Bidirectional variants in the same family carry "CH" or "CAH" suffixes (e.g., P6SMB12CH), which the P6SMB12H does not.
What is the maximum clamping voltage of the P6SMB12H under surge conditions?
The P6SMB12H clamps to a maximum of 17.3 V at its rated peak pulse current of 36 A (10/1000 µs waveform), as specified in TSC's Electrical Specifications table. This value represents the upper limit of voltage imposed on protected circuitry during standardized surge events, directly enabling safe interfacing with 12 V automotive ICs.
Does the P6SMB12H meet automotive qualification standards?
Yes, the P6SMB12H is explicitly AEC-Q101 qualified per the manufacturer's documentation, and additionally meets ISO 7637-2 Pulse 1, 2a, 2b, 3a, and 3b transient immunity requirements. These qualifications are stated in the FEATURES section of the official TSC datasheet for the P6SMB6.8(A)H–P6SMB220(A)H family, confirming suitability for automotive power rail protection.
What package type does the P6SMB12H use, and is it RoHS compliant?
The P6SMB12H uses the DO-214AA (SMB) surface-mount package, with matte tin-plated leads and J-STD-002 solderability. It is RoHS compliant and halogen-free per IEC 61249-2-21, as confirmed in the FEATURES and ORDERING INFORMATION sections of the TSC datasheet. The package is rated MSL Level 1 per J-STD-020, requiring no dry-pack handling.
P6SMB12H 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):
- 9.72V
- Voltage - Breakdown (Min):
- 10.8V
- Voltage - Clamping (Max) @ Ipp:
- 17.3V
- Current - Peak Pulse (10/1000µs):
- 36A
- 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)
P6SMB12H FAQ
1.How can I place an order for P6SMB12H through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB12H 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 P6SMB12H reliable?
The price and inventory of P6SMB12H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB12H is usually 5 days.
3.What payment methods are accepted for P6SMB12H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB12H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB12H?
P6SMB12H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB12H 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 P6SMB12H?
For technical support, including P6SMB12H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB12H requirements.
6.How does Aetrix verify that P6SMB12H is sourced from the original manufacturer or authorized distributors?
All P6SMB12H 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 P6SMB12H meets industry standards.
7.What is the process for return or replacement of P6SMB12H?
All P6SMB12H units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB12H, 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 P6SMB12H part is unused and in its original packaging.
Return procedure for P6SMB12H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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