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Taiwan Semiconductor Corporation P6SMB12CAH
- Part No.:
- P6SMB12CAH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB12CAH.pdf
- Description:
- TVS DIODE 10.2VWM 16.7VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:6,601
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Product details
Overview
P6SMB12CAH from Taiwan Semiconductor is a bidirectional 600W surface-mount transient voltage suppressor (TVS) diode with a nominal breakdown voltage of 12.6 V, clamping voltage of 16.7 V at 37 A peak pulse current, and stand-off voltage of 10.2 V. It features glass-passivated junction, AEC-Q101 qualification, and DO-214AA (SMB) package for automotive-grade ESD and surge protection in power rails and signal lines.
For engineers reviewing the P6SMB12CAH datasheet, P6SMB12CAH pinout, P6SMB12CAH application, or P6SMB12CAH equivalent, key selection criteria include bidirectional clamping performance, 1.0 mA test current VBR tolerance (11.4–12.6 V), <1 µA reverse leakage at VWM, ISO 7637-2 Pulse 1/2a/2b/3a/3b compliance, and moisture sensitivity level 1 handling.
Technical Context
The P6SMB12CAH operates as a bidirectional avalanche diode, symmetrically clamping transients in both polarities with identical VBR, VC, and IPPM specifications. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<1 µA at 10.2 V).
Designed for automotive environments, it meets AEC-Q101 stress testing and ISO 7637-2 immunity requirements for load dump and inductive switching transients. Thermal resistance values are RθJC = 10 °C/W and RθJA = 55 °C/W, supporting reliable operation up to TJ = 150 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 11.4 V / 12.6 V at 1.0 mA - defines guaranteed clamping onset range under standardized test conditions |
| VWM | 10.2 V - maximum continuous reverse working voltage before significant leakage begins |
| VC @ IPPM | 16.7 V at 37 A (10/1000 µs) - peak clamped voltage seen by protected circuit during worst-case surge |
| PPPSM | 600 W - non-repetitive peak pulse power handling capability per standard waveform |
| IR @ VWM | <1 µA - ensures minimal standby power loss and signal integrity in high-impedance circuits |
| TJ max | +150 °C - enables use in under-hood automotive modules without derating at ambient ≤125 °C |
| 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, polarity indicated by cathode band (bidirectional symmetry means no functional anode/cathode distinction; band denotes terminal orientation only).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (marked end) | Transient return path (bidirectional) | Identical electrical behavior to opposite terminal; cathode band marks physical orientation for automated placement alignment |
| Cathode (unmarked end) | Transient return path (bidirectional) | Electrically interchangeable with marked end; no functional polarity-symmetrical clamping in both directions |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive electronics including engine control units, body controllers, and ADAS sensors requiring reliability beyond industrial grade |
| ISO 7637-2 compliant | Withstands Pulse 1 (inductive load dump), Pulse 2a/2b (switching transients), and Pulse 3a/3b (ESD-coupled fast transients) without degradation |
| Moisture sensitivity level 1 | Zero bake requirement before reflow; supports standard SMT assembly without dry-pack or floor-life constraints |
| Glass-passivated junction | Ensures long-term stability of VBR and low leakage across temperature and lifetime, critical for safety-critical systems |
| Fast response time | <1.0 ps rise time from 0 V to VBR(min) - clamps ESD events before IC damage thresholds are exceeded |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: 12 V battery rail in vehicle infotainment head unit exposed to load dump and jump-start surges. IC Role / Device Role / Timing Role: Bidirectional TVS placed upstream of DC-DC converter input to clamp transients before they reach regulation stage. Use Value: Limits voltage to ≤16.7 V during 37 A pulses, preventing overvoltage shutdown or latch-up in PMICs rated for 18 V absolute max. | Use Scenario: RS-485 transceiver inputs in factory automation PLC I/O module subjected to EFT bursts. IC Role / Device Role / Timing Role: Differential-line TVS across A/B bus terminals to shunt common-mode transients while preserving signal integrity. Use Value: Sub-µA leakage at 10.2 V avoids bias current errors; 16.7 V clamping protects transceiver's ±15 V fault tolerance window. |
| LED Lighting Driver Protection | Automotive CAN Transceiver Protection |
Use Scenario: Constant-current LED driver in exterior lighting subjected to ISO 16750-2 supply transients. IC Role / Device Role / Timing Role: TVS on input capacitor node to absorb 600 W pulses without thermal runaway or capacitance shift. Use Value: 600 W rating handles 10/1000 µs surges per ISO 16750-2; DO-214AA footprint allows compact layout near connector entry point. | Use Scenario: CAN FD transceiver in gateway ECU exposed to coupled noise from high-power motor drivers. IC Role / Device Role / Timing Role: Bidirectional TVS on CAN_H/CAN_L differential pair to suppress common-mode spikes without distorting data eye. Use Value: Symmetrical 11.4–12.6 V VBR ensures equal clamping on both lines; 16.7 V VC stays within transceiver's common-mode range (±36 V). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ12CA | Same DO-214AA package, 600 W rating, but VBR = 13.3–14.7 V (min/max), VC = 19.9 V @ 30.1 A | Higher clamping voltage reduces margin for 12 V rail protection; better suited for 13.5 V nominal systems | Select P6SMB12CAH when tighter VBR tolerance (11.4–12.6 V) and lower VC (16.7 V) are required for legacy 12 V designs. |
| 1.5SMC12CA | Higher power (1500 W), same VBR range, but larger DO-214AB (SMC) package (2.54 mm pitch vs SMB's 1.9 mm) | Requires PCB layout change; used where higher single-pulse energy absorption is needed (e.g., alternator load dump) | Choose P6SMB12CAH for space-constrained automotive modules where 600 W suffices and DO-214AA footprint is fixed. |
Compared with SMBJ12CA and 1.5SMC12CA, the P6SMB12CAH offers the lowest clamping voltage (16.7 V) in the DO-214AA form factor, enabling robust protection of 12 V logic supplies without overdesigning board area or sacrificing surge margin.
Availability
P6SMB12CAH is available at Aetrix Electronics and suitable for automotive electronics, industrial sensor interfaces, LED lighting drivers, and CAN transceiver protection requiring stable component supply and AEC-Q101 assurance.
Supply support for P6SMB12CAH 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 targets automotive and industrial transient suppression, designed specifically to meet ISO 7637-2 and AEC-Q101 requirements in compact DO-214AA packaging for cost-sensitive, high-reliability applications.
FAQ
What does the "CAH" suffix indicate in P6SMB12CAH?
The "CAH" suffix denotes a bidirectional configuration with tightened VBR tolerance (11.4–12.6 V) and AEC-Q101 qualification. Unlike "CH" variants, "CAH" parts undergo additional automotive stress screening and feature enhanced process control for consistent clamping performance across temperature and lifetime-critical for P6SMB12CAH deployment in safety-relevant vehicle subsystems.
Is P6SMB12CAH suitable for protecting a 12 V automotive microcontroller power supply?
Yes. With VWM = 10.2 V, the P6SMB12CAH remains non-conductive during normal 12 V operation (including cold-crank dips to ~6 V and load-dump peaks to ~16 V), yet clamps transients to ≤16.7 V at 37 A. This provides 1.3 V margin below typical 18 V absolute maximum ratings of automotive MCUs-making P6SMB12CAH a validated choice for such protection.
How does P6SMB12CAH compare to unidirectional TVS diodes like P6SMB12H?
P6SMB12CAH provides symmetrical clamping in both directions, essential for protecting AC-coupled or differential signals (e.g., CAN, LIN, RS-485). In contrast, P6SMB12H is unidirectional with cathode-anode polarity and higher forward voltage (VF ≈ 3.5 V). For 12 V rail protection where polarity is fixed, P6SMB12H may offer slightly lower leakage-but P6SMB12CAH is mandatory when bidirectional surge paths exist.
Does P6SMB12CAH require derating at elevated ambient temperatures?
Yes. Per Figure 2 in the datasheet, P6SMB12CAH's 600 W peak pulse power must be linearly derated above 25 °C ambient, reaching ~450 W at 75 °C and ~300 W at 125 °C. Designers must verify that worst-case surge energy (V × I × t) remains within the derated PPPSM curve-especially in under-hood applications where P6SMB12CAH junction temperature could approach 150 °C.
Can P6SMB12CAH be used in parallel to increase surge current handling?
No. Due to VBR tolerance (±5%), paralleling multiple P6SMB12CAH devices causes current imbalance-lower-VBR units conduct first and absorb disproportionate energy, risking thermal failure. For higher current needs, select a single higher-rated device (e.g., 1.5SMC12CA) or verify matched-bin parts with <1% VBR spread, which is not standard for P6SMB12CAH.
P6SMB12CAH 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):
- 10.2V
- Voltage - Breakdown (Min):
- 11.4V
- Voltage - Clamping (Max) @ Ipp:
- 16.7V
- Current - Peak Pulse (10/1000µs):
- 37A
- 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)
P6SMB12CAH FAQ
1.How can I place an order for P6SMB12CAH through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB12CAH 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 P6SMB12CAH reliable?
The price and inventory of P6SMB12CAH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB12CAH is usually 5 days.
3.What payment methods are accepted for P6SMB12CAH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB12CAH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB12CAH?
P6SMB12CAH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB12CAH 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 P6SMB12CAH?
For technical support, including P6SMB12CAH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB12CAH requirements.
6.How does Aetrix verify that P6SMB12CAH is sourced from the original manufacturer or authorized distributors?
All P6SMB12CAH 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 P6SMB12CAH meets industry standards.
7.What is the process for return or replacement of P6SMB12CAH?
All P6SMB12CAH units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB12CAH, 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 P6SMB12CAH part is unused and in its original packaging.
Return procedure for P6SMB12CAH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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