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Taiwan Semiconductor Corporation P6SMB12CH
- Part No.:
- P6SMB12CH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB12CH.pdf
- Description:
- 600W, 12V, 10%, BIDIRECTIONAL, T
- Quantity:
- Payment:
- Shipping:
Inventory:6,793
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Product details
Overview
P6SMB12CH from Taiwan Semiconductor is a bidirectional 600W surface-mount transient voltage suppressor (TVS) diode in DO-214AA (SMB) package, with breakdown voltage 10.8–13.2 V, clamping voltage 17.3 V at 36 A peak pulse current, and AEC-Q101 qualification for automotive-grade surge protection. It protects CAN bus interfaces, automotive lighting control ICs, and power supply inputs against ISO 7637-2 Pulse 1/2a/2b/3a/3b transients.
For engineers reviewing the P6SMB12CH datasheet, P6SMB12CH pinout, P6SMB12CH application, or P6SMB12CH equivalent, key selection criteria include bidirectional clamping capability, 17.3 V VC@36 A, AEC-Q101 qualification, moisture sensitivity level 1, and DO-214AA mechanical compatibility with automated SMT placement.
Technical Context
The P6SMB12CH is a glass-passivated, unidirectional/bidirectional TVS diode optimized for fast transient suppression in automotive and industrial systems. Its junction-to-case thermal resistance is 10 °C/W, enabling reliable operation up to 150 °C junction temperature under repetitive surge conditions.
It meets ISO 7637-2 Pulse 1 (inductive load dump), Pulse 2a/2b (battery disconnect/relay bounce), and Pulse 3a/3b (capacitive coupling) waveforms. The device exhibits <1 μA reverse leakage at 9.72 V stand-off voltage and a typical breakdown voltage temperature coefficient of 0.078 %/°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 10.8 V / 13.2 V - ensures reliable conduction onset above system operating voltage while avoiding false triggering |
| VWM | 9.72 V - maximum continuous reverse working voltage compatible with 12 V automotive systems |
| VC@IPPM | 17.3 V @ 36 A - clamps transient energy to safe levels for downstream 24 V tolerant ICs |
| PPPSM | 600 W - handles high-energy 10/1000 µs surges per ISO 7637-2 without degradation |
| IR @ VWM | <1 µA - negligible standby power loss and signal integrity impact in always-on circuits |
| TJ max | 150 °C - supports under-hood deployment in engine control units and body electronics |
| Package | DO-214AA (SMB) - standard surface-mount footprint with 0.090 g mass and J-STD-002 solderability |
Pinout & Package
DO-214AA (SMB) package: molded plastic case with matte tin-plated leads, polarity indicated by cathode band (bidirectional operation uses symmetrical marking; no anode/cathode distinction required).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bidirectional transient path | Both terminals serve as interchangeable surge current entry/exit points; no polarity dependency in circuit layout |
| Cathode band (marking) | Reference orientation indicator | Used only for unidirectional variants; P6SMB12CH omits functional polarity-band serves as mechanical alignment aid during placement |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control, lighting, and infotainment with zero failure in accelerated stress testing |
| Glass passivated junction | Enhances long-term reliability under thermal cycling and humidity exposure (J-STD-020 MSL Level 1) |
| Clamping response <1.0 ps | Protects high-speed CAN FD and LIN transceivers before transient energy couples into signal paths |
| Meets ISO 7637-2 Pulse 1/2a/2b/3a/3b | Full compliance enables single-device protection architecture for 12 V vehicle electrical systems |
| RoHS & halogen-free | Complies with IEC 61249-2-21 and EU Directive 2011/65/EU for green manufacturing and end-of-life processing |
Applications
| Automotive Lighting Control | CAN Bus Node Protection |
|---|---|
Use Scenario: Protecting LED driver ICs and microcontrollers in headlamp modules subjected to load dump and relay switching transients. IC Role / Device Role: Primary transient shunt across 12 V supply rail upstream of DC-DC converters and gate drivers. Use Value: Limits voltage excursion to ≤17.3 V during 600 W pulses, preventing latch-up or overvoltage damage to 24 V-rated drivers. | Use Scenario: Safeguarding CAN transceivers (e.g., TJA1042, SN65HVD230) against ESD and coupled noise on vehicle wiring harnesses. IC Role / Device Role: Bidirectional clamping element placed between CAN_H/CAN_L differential pair and ground. Use Value: Maintains signal integrity by suppressing transients below 17.3 V while adding <1 pF junction capacitance at 0 V bias. |
| Industrial Power Supply Input | Automotive Body Control Module (BCM) |
Use Scenario: Input-stage surge protection for 12 V DC-DC converters in factory automation controllers exposed to inductive switching noise. IC Role / Device Role: First-line defense parallel to bulk input capacitor, diverting surge current away from rectifier and controller IC. Use Value: Withstands 36 A peak pulse current without derating at 25 °C, enabling compact PCB layouts without heatsinking. | Use Scenario: Protecting microcontroller GPIOs and sensor interfaces in BCMs handling door lock actuators, window motors, and mirror controls. IC Role / Device Role: Localized TVS on each switched 12 V output line to suppress inductive kickback from solenoids and relays. Use Value: AEC-Q101 qualification ensures operational stability across -40 °C to +125 °C ambient, matching BCM thermal envelope. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ12CA | Same DO-214AC (SMA) package; lower PPPSM = 400 W; VC = 19.9 V @ 20.1 A | Limited to lower-energy transients; not AEC-Q101 qualified | Select when cost sensitivity outweighs automotive qualification and 600 W surge margin |
| 1.5KE12CA | Through-hole DO-15 package; higher PPPSM = 1500 W; VC = 19.2 V @ 78.1 A | Requires PCB real estate and wave-solder process; unsuitable for high-density SMT designs | Select only when legacy through-hole assembly is mandated and thermal mass improves long-pulse handling |
Compared with SMAJ12CA and 1.5KE12CA, P6SMB12CH uniquely combines AEC-Q101 qualification, 600 W DO-214AA form factor, and 17.3 V clamping-making it optimal for new automotive SMT designs requiring validated reliability and space-constrained layouts.
Availability
P6SMB12CH is available at Aetrix Electronics and suitable for automotive lighting control, CAN bus node protection, and industrial power supply input applications requiring stable component supply and full AEC-Q101 compliance.
Supply support for P6SMB12CH 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 analog and discrete semiconductor manufacturer headquartered in Hsinchu, Taiwan, specializing in TVS diodes, rectifiers, MOSFETs, and automotive-qualified components.
The P6SMB12CH belongs to TSC's AEC-Q101-certified P6SMBxCH series, engineered specifically for robust transient immunity in 12 V automotive subsystems-including body electronics, lighting, and communication interfaces-where reliability under harsh electrical environments is critical.
FAQ
What is the clamping voltage of P6SMB12CH and how is it measured?
The P6SMB12CH has a maximum clamping voltage (VC) of 17.3 V, measured at a peak pulse current (IPPM) of 36 A using a 10/1000 µs waveform per IEC 61000-4-5 and ISO 7637-2 standards. This value defines the upper voltage limit imposed on protected circuitry during surge events and is guaranteed across the full operating temperature range of −55 °C to +150 °C. The P6SMB12CH maintains this clamping performance without derating up to 25 °C ambient.
Is P6SMB12CH unidirectional or bidirectional, and how does that affect circuit design?
P6SMB12CH is a bidirectional TVS diode, indicated by the "CH" suffix per TSC's ordering nomenclature. Unlike unidirectional variants (e.g., P6SMB12H), it provides symmetrical clamping in both polarities-eliminating the need for polarity-aware placement and enabling direct integration across differential lines like CAN_H/CAN_L or AC-coupled sensors. Its DO-214AA package uses non-polarized marking, simplifying layout and reducing BOM complexity.
Does P6SMB12CH meet automotive qualification standards?
Yes, P6SMB12CH is AEC-Q101 qualified, having passed stress tests including high-temperature operating life (HTOL), temperature cycling, and unbiased highly accelerated stress test (uHAST). It also complies with ISO 7637-2 Pulse 1, 2a, 2b, 3a, and 3b for automotive transient immunity. These qualifications are documented in TSC's official AEC-Q101 certificate and product release version A2102, confirming suitability for engine control, body electronics, and infotainment systems.
What is the maximum steady-state power dissipation of P6SMB12CH?
The P6SMB12CH has a steady-state power dissipation (Ptot) rating of 3 W at TA = 25 °C, as specified in its Absolute Maximum Ratings table. This value applies only to continuous DC or low-frequency reverse-bias conditions-not transient suppression. In normal operation, reverse leakage remains below 1 µA at 9.72 V, resulting in sub-10 µW static power loss. The 3 W rating supports brief overload scenarios but is not intended for sustained power handling.
How does the junction-to-ambient thermal resistance of P6SMB12CH impact PCB layout?
P6SMB12CH has a junction-to-ambient thermal resistance (RθJA) of 55 °C/W, meaning a 3 W steady-state dissipation would raise junction temperature by 165 °C above ambient-exceeding its 150 °C maximum. Therefore, the device must be used exclusively for transient suppression (not continuous power), and PCB layout should prioritize low-inductance connections and adequate copper area near the SMB pads to assist short-duration heat diffusion during 10/1000 µs pulses. No thermal vias or heatsinks are required for surge duty.
P6SMB12CH 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):
- 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)
P6SMB12CH FAQ
1.How can I place an order for P6SMB12CH through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB12CH 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 P6SMB12CH reliable?
The price and inventory of P6SMB12CH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB12CH is usually 5 days.
3.What payment methods are accepted for P6SMB12CH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB12CH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB12CH?
P6SMB12CH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB12CH 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 P6SMB12CH?
For technical support, including P6SMB12CH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB12CH requirements.
6.How does Aetrix verify that P6SMB12CH is sourced from the original manufacturer or authorized distributors?
All P6SMB12CH 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 P6SMB12CH meets industry standards.
7.What is the process for return or replacement of P6SMB12CH?
All P6SMB12CH units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB12CH, 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 P6SMB12CH part is unused and in its original packaging.
Return procedure for P6SMB12CH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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