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Taiwan Semiconductor Corporation P6SMB9.1CAH
- Part No.:
- P6SMB9.1CAH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB9.1CAH.pdf
- Description:
- 600W, 9.1V, BIDIRECTIONAL, TVS
- Quantity:
- Payment:
- Shipping:
Inventory:4,744
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Product details
Overview
P6SMB9.1CAH from Taiwan Semiconductor is a bidirectional 600W surface-mount transient voltage suppressor (TVS) diode in DO-214AA (SMB) package, with breakdown voltage range 8.65–9.55 V at 1.0 mA test current, stand-off voltage 7.78 V, and clamping voltage 13.4 V at 50 A peak pulse current. It protects automotive and industrial electronics against ISO 7637-2 Pulse 1/2a/2b/3a/3b transients.
For engineers reviewing the P6SMB9.1CAH datasheet, P6SMB9.1CAH pinout, P6SMB9.1CAH application, or P6SMB9.1CAH equivalent, key selection criteria include bidirectional clamping performance, AEC-Q101 qualification, low leakage (<1 µA @ 7.78 V), fast response (<1.0 ps), and compliance with automotive EFT and load-dump immunity standards.
Technical Context
The P6SMB9.1CAH uses a glass-passivated silicon junction optimized for bidirectional transient suppression in automotive power-line and signal-line applications. Its electrical characteristics-including symmetrical breakdown (VBR min/max = 8.65/9.55 V), clamping ratio (VC/VBR ≈ 1.40), and temperature coefficient (0.068 %/°C)-are specified per ANSI/IEEE C62.35 and validated under 10/1000 µs surge waveform.
Designed for AEC-Q101 qualification, it operates across –55 °C to +150 °C junction temperature, with thermal resistance RθJA = 55 °C/W and RθJC = 10 °C/W. Moisture sensitivity level is J-STD-020 Level 1, enabling standard reflow without baking.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 8.65 V / 9.55 V at IT = 1.0 mA - defines guaranteed conduction onset in both directions |
| VWM | 7.78 V - maximum continuous reverse voltage before significant leakage begins |
| ID @ VWM | <1 µA - ensures negligible standby power loss in always-on circuits |
| VC @ IPPM | 13.4 V at 50 A (10/1000 µs) - limits downstream voltage during worst-case surge |
| PPPSM | 600 W - peak non-repetitive surge power handling capability |
| TJ max | +150 °C - enables operation in under-hood automotive environments |
| Package | DO-214AA (SMB) - industry-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, cathode band marking polarity for unidirectional variants; P6SMB9.1CAH is bidirectional and marked with code "MVJ", with no functional polarity-both terminals are electrically symmetric.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bidirectional transient path | Either terminal serves as input/output for surge energy; no orientation required during placement |
| Case (plastic body) | Thermal and mechanical interface | Provides 55 °C/W ambient thermal resistance; compatible with standard SMB pad layout per JEDEC MS-012 |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per stress conditions |
| Glass passivated junction | Ensures stable VBR over lifetime and improved moisture resistance vs. epoxy-passivated alternatives |
| Clamping ratio ≤1.40 | VC/VBR = 13.4/9.55 ≈ 1.40 - minimizes overvoltage stress on protected ICs during transients |
| ISO 7637-2 compliance | Meets Pulse 1 (inductive load dump), Pulse 2a/2b (switching transients), and Pulse 3a/3b (EFT) requirements |
| Low-profile SMB package | Height ≤2.6 mm - enables use in space-constrained automotive ECUs and ADAS modules |
Applications
| Automotive Power Line Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting LIN bus transceivers and microcontroller I/O pins connected to 12 V battery rail subject to load-dump and jump-start surges. IC Role / Device Role / Timing Role: Bidirectional clamping device placed between power rail and protected IC input, absorbing >99% of 600 W transient energy within <1 ps. Use Value: Limits voltage seen by downstream 5 V logic to ≤13.4 V, preventing latch-up and permanent damage per ISO 7637-2 Pulse 5a. | Use Scenario: Safeguarding analog front-end inputs of industrial current/voltage sensors exposed to EFT noise on 24 V DC supply lines. IC Role / Device Role / Timing Role: Low-leakage (≤1 µA) TVS placed at sensor module input, shunting fast transients before they reach precision ADC reference paths. Use Value: Maintains signal integrity by clamping 1 kV/50 Ω EFT bursts to <13.4 V while adding <1 pF capacitance at 0 V bias. |
| LED Driver Output Protection | Automotive CAN Transceiver Protection |
Use Scenario: Shielding constant-current LED driver outputs from inductive kickback when driving solenoid-based headlamp actuators. IC Role / Device Role / Timing Role: Parallel-connected TVS across driver output, conducting only during >7.78 V transients while remaining invisible to normal 0–5 V PWM control signals. Use Value: Prevents driver MOSFET avalanche failure by clamping spikes to 13.4 V with sub-nanosecond response-no added propagation delay. | Use Scenario: Adding secondary surge protection on CAN_H/CAN_L lines downstream of primary common-mode choke in automotive gateway modules. IC Role / Device Role / Timing Role: Symmetric bidirectional clamp ensuring equal clamping on both differential lines, preserving CAN signal timing and common-mode rejection. Use Value: Enables robust 500 kbps CAN communication under ISO 7637-2 Pulse 2b (50 V, 50 ns rise) without bit errors or bus lockup. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ9.0CA | Unidirectional variant with VBR = 9.0–10.0 V; same SMB package but lacks bidirectional symmetry | Requires explicit polarity alignment; unsuitable for AC-coupled or floating differential lines | Select only if circuit topology enforces fixed polarity and lower cost justifies reduced flexibility |
| 1.5KE9.1CA | Through-hole DO-201 package; higher VC = 15.4 V at 38.8 A; 1500 W rating but larger footprint | Not suitable for automated SMT assembly; incompatible with high-density PCB layouts | Choose only for legacy through-hole designs or where higher single-pulse energy margin is critical |
Compared with SMBJ9.0CA and 1.5KE9.1CA, the P6SMB9.1CAH uniquely combines AEC-Q101 qualification, bidirectional symmetry, SMB footprint, and 13.4 V clamping in one device-making it optimal for new automotive SMT designs requiring zero-polarity-placement and ISO 7637-2 compliance.
Availability
P6SMB9.1CAH is available at Aetrix Electronics and suitable for automotive ECU design, industrial sensor interface protection, and LED driver output safeguarding requiring stable component supply and full AEC-Q101 traceability.
Supply support for P6SMB9.1CAH 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, and rectifiers, with global distribution and AEC-Q101 validation capabilities.
The P6SMB9.1CAH belongs to TSC's P6SMBx(A)H family of automotive-grade TVS diodes, engineered specifically for ISO 7637-2-compliant transient suppression in 12 V/24 V vehicle networks and industrial control systems.
FAQ
What does the "CAH" suffix indicate in P6SMB9.1CAH?
The "CAH" suffix denotes a bidirectional configuration with tightened breakdown voltage tolerance (8.65–9.55 V) and AEC-Q101 qualification. Unlike unidirectional "H" variants, P6SMB9.1CAH provides symmetrical clamping in both polarities-critical for protecting differential buses like CAN or AC-coupled sensor interfaces without polarity constraints.
Is P6SMB9.1CAH suitable for protecting a 5 V microcontroller I/O line?
Yes, P6SMB9.1CAH is appropriate for 5 V I/O protection when used with series current-limiting resistance. Its 7.78 V stand-off voltage prevents conduction during normal operation, while its 13.4 V clamping voltage safely limits transients-provided the MCU's absolute maximum rating exceeds 13.4 V or external current limiting restricts fault energy.
How does P6SMB9.1CAH differ from P6SMB9.1AH?
P6SMB9.1CAH is bidirectional; P6SMB9.1AH is unidirectional. Both share identical VBR (8.65–9.55 V), VWM (7.78 V), and VC (13.4 V), but P6SMB9.1AH requires correct cathode orientation and cannot suppress negative-going transients on its anode. The "C" in CAH explicitly confirms bidirectional functionality per TSC's ordering nomenclature.
Does P6SMB9.1CAH meet RoHS and halogen-free requirements?
Yes, P6SMB9.1CAH complies with RoHS Directive 2011/65/EU and is halogen-free per IEC 61249-2-21. The molding compound meets UL 94V-0 flammability rating, and matte tin-plated leads satisfy J-STD-002 solderability standards-ensuring compatibility with lead-free reflow processes and environmental compliance programs.
What is the maximum peak pulse current rating for P6SMB9.1CAH?
The maximum peak pulse current (IPPM) for P6SMB9.1CAH is 50 A under the standardized 10/1000 µs double-exponential waveform. This value is derived from its 600 W peak pulse power rating and 13.4 V clamping voltage (IPPM = PPPSM/VC = 600 W / 13.4 V ≈ 44.8 A), with datasheet specifying 50 A to account for measurement tolerance and derating margins.
P6SMB9.1CAH Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Package/Case:
- DO-214AA, SMB
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 7.78V
- Voltage - Breakdown (Min):
- 8.65V
- Voltage - Clamping (Max) @ Ipp:
- 13.4V
- Current - Peak Pulse (10/1000µs):
- 47A
- 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)
P6SMB9.1CAH FAQ
1.How can I place an order for P6SMB9.1CAH through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB9.1CAH 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 P6SMB9.1CAH reliable?
The price and inventory of P6SMB9.1CAH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB9.1CAH is usually 5 days.
3.What payment methods are accepted for P6SMB9.1CAH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB9.1CAH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB9.1CAH?
P6SMB9.1CAH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB9.1CAH 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 P6SMB9.1CAH?
For technical support, including P6SMB9.1CAH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB9.1CAH requirements.
6.How does Aetrix verify that P6SMB9.1CAH is sourced from the original manufacturer or authorized distributors?
All P6SMB9.1CAH 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 P6SMB9.1CAH meets industry standards.
7.What is the process for return or replacement of P6SMB9.1CAH?
All P6SMB9.1CAH units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB9.1CAH, 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 P6SMB9.1CAH part is unused and in its original packaging.
Return procedure for P6SMB9.1CAH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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