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Taiwan Semiconductor Corporation P6SMB36CAH
- Part No.:
- P6SMB36CAH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB36CAH.pdf
- Description:
- TVS DIODE 30.8VWM 49.9VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:8,545
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Product details
Overview
P6SMB36CAH from Taiwan Semiconductor is a bidirectional 600W surface-mount transient voltage suppressor (TVS) diode in DO-214AA (SMB) package, with breakdown voltage range 34.2–37.8 V, clamping voltage 49.9 V at 12.6 A peak pulse current, and AEC-Q101 qualification for automotive electronics protection.
For engineers reviewing the P6SMB36CAH datasheet, P6SMB36CAH pinout, P6SMB36CAH application, or P6SMB36CAH equivalent, this device serves as a robust, low-profile ESD and surge protector for 24 V automotive power rails, CAN bus interfaces, and microcontroller I/O lines requiring ISO 7637-2 Pulse 1/2a/2b/3a/3b compliance and <1 μA reverse leakage above 30.8 V.
Technical Context
P6SMB36CAH is a bipolar (bidirectional) TVS diode designed to clamp transient overvoltages in both polarities without polarity dependence. Its glass-passivated junction ensures stable breakdown behavior, while its 10 °C/W junction-to-case thermal resistance supports reliable power dissipation during repetitive surge events.
The device operates across –55 °C to +150 °C junction temperature range and meets J-STD-020 moisture sensitivity level 1. It delivers fast response (<1.0 ps rise time from 0 V to VBR(min)) and maintains clamping performance under 10/1000 μs waveform stress up to 600 W non-repetitive peak pulse power.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 34.2 V / 37.8 V - Ensures consistent avalanche initiation across production units at 1 mA test current |
| VWM | 30.8 V - Maximum continuous reverse operating voltage before significant leakage begins |
| IPPM | 12.6 A - Peak pulse current supported under 10/1000 μs waveform at rated power |
| VC@IPPM | 49.9 V - Clamped voltage seen by protected circuit during full-rated surge event |
| PPPSM | 600 W - Non-repetitive peak impulse power handling capability per ISO 7637-2 |
| TJ(max) | +150 °C - Enables operation in under-hood automotive environments without derating |
| RθJC | 10 °C/W - Supports thermal management on standard PCB copper when mounted per JEDEC layout |
Pinout & Package
DO-214AA (SMB) surface-mount package: low-profile, rectangular body with cathode band marking; matte tin-plated leads compliant with J-STD-002 solderability; UL 94V-0 molding compound; weight ≈ 0.090 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (unmarked end) | Transient current entry point in negative polarity | Accepts reverse surge energy during negative transients; symmetric with cathode for bidirectional clamping |
| Cathode (banded end) | Transient current entry point in positive polarity | Accepts surge energy during positive transients; marked band enables unambiguous PCB orientation |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per stress test plan |
| Glass passivated junction | Provides stable VBR tolerance and low parameter drift over lifetime and temperature |
| ISO 7637-2 compliance | Guarantees immunity against load dump, inductive switching, and EFT pulses (Pulse 1/2a/2b/3a/3b) |
| Moisture sensitivity level 1 | Enables standard SMT assembly without baking or dry-pack requirements |
| RoHS & halogen-free | Meets IEC 61249-2-21 and EU RoHS Directive for environmentally compliant manufacturing |
Applications
| Automotive Power Rail Protection | CAN Bus Transient Suppression |
|---|---|
Use Scenario: Protecting 24 V battery-supplied ECUs from load dump and alternator-induced surges. IC Role / Device Role / Timing Role: Bidirectional clamping element placed between power rail and ground to limit voltage excursions to ≤49.9 V. Use Value: Prevents damage to downstream DC-DC converters and microcontrollers during ISO 7637-2 Pulse 5a (load dump) events. | Use Scenario: Shielding high-speed CAN FD transceivers from ESD and coupled transients on differential bus lines. IC Role / Device Role / Timing Role: Low-capacitance TVS pair (one per line) referenced to common ground, leveraging symmetric clamping. Use Value: Maintains signal integrity up to 5 Mbps while suppressing ±30 kV contact ESD per IEC 61000-4-2 without adding jitter or skew. |
| Microcontroller I/O Protection | Industrial Sensor Interface Protection |
Use Scenario: Safeguarding GPIO, UART, and SPI pins of automotive MCUs exposed to harness coupling and board-level ESD. IC Role / Device Role / Timing Role: Point-of-entry TVS on each I/O trace, placed adjacent to connector or header to minimize inductance. Use Value: Limits transient voltage to 49.9 V within <1 ps, preventing latch-up or gate oxide rupture in 3.3 V/5 V logic inputs. | Use Scenario: Protecting analog front-end circuits (e.g., 4–20 mA loop receivers, RTD inputs) in harsh industrial environments. IC Role / Device Role / Timing Role: Primary overvoltage clamp on sensor supply and signal lines, coordinated with series impedance for current limiting. Use Value: Withstands repeated 1 kV/500 A surge events per IEC 61000-4-5 Level 4 while maintaining <1 μA leakage at 30.8 V standoff. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ36CA | Same DO-214AA package, identical VBR (34.2–37.8 V), but rated for 600 W with slightly higher VC = 58.1 V @ 10.3 A | Higher clamping voltage reduces margin for 3.3 V logic protection but acceptable for 24 V power rails | Select SMBJ36CA if legacy design uses SMBJ footprint and requires same thermal profile |
| 1.5SMC36CA | Larger DO-214AB (SMC) package, same electrical specs, 1.5 kW rating - derated to 600 W for compatibility | Requires PCB pad redesign; better thermal mass for high-duty-cycle surges | Choose 1.5SMC36CA only when enhanced thermal endurance justifies larger footprint and cost premium |
Compared with SMBJ36CA and 1.5SMC36CA, P6SMB36CAH offers identical clamping performance in a lower-cost, AEC-Q101-qualified SMB package optimized for automated placement and automotive qualification - making it the preferred choice for new 24 V ECU designs where space and qualification are critical.
Availability
P6SMB36CAH is available at Aetrix Electronics and suitable for automotive control units, industrial sensor interfaces, and CAN FD communication modules requiring stable component supply and long-term lifecycle assurance.
Supply support for P6SMB36CAH 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 capability.
P6SMB36CAH 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 systems and industrial control environments.
FAQ
What is the breakdown voltage tolerance of P6SMB36CAH?
P6SMB36CAH has a guaranteed breakdown voltage range of 34.2 V to 37.8 V at 1 mA test current, corresponding to ±5% tolerance around the nominal 36 V rating. This tight VBR spread ensures predictable clamping onset across production lots and supports robust design margining in automotive power rail protection circuits using the P6SMB36CAH.
Is P6SMB36CAH suitable for bidirectional signal line protection?
Yes, P6SMB36CAH is explicitly designed for bidirectional operation, as indicated by the "CAH" suffix and confirmed in the datasheet's "Devices for Bipolar Applications" section. Its symmetrical VBR, VC, and leakage characteristics in both polarities make it ideal for protecting differential buses like CAN, LIN, or RS-485, where transients can occur with either polarity relative to ground - a key capability of the P6SMB36CAH.
Does P6SMB36CAH meet automotive qualification standards?
Yes, P6SMB36CAH is AEC-Q101 qualified, verified through standardized stress tests including high-temperature reverse bias (HTRB), temperature cycling, and ESD. This qualification confirms its suitability for under-hood and cabin-mounted automotive electronics, distinguishing it from commercial-grade TVS diodes and ensuring reliability in demanding automotive environments where the P6SMB36CAH is deployed.
What is the maximum clamping voltage of P6SMB36CAH under surge conditions?
The maximum clamping voltage of P6SMB36CAH is 49.9 V at 12.6 A peak pulse current under the standard 10/1000 μs waveform. This value defines the highest voltage the protected circuit will experience during a full-rated 600 W transient event, enabling precise selection of downstream ICs with appropriate absolute maximum ratings - a critical specification for safe system-level design using the P6SMB36CAH.
How does P6SMB36CAH compare to unidirectional TVS diodes in circuit layout?
P6SMB36CAH eliminates the need for polarity-aware placement: unlike unidirectional TVS diodes, it requires no anode/cathode orientation check during SMT assembly due to its symmetric bidirectional structure. This simplifies layout, reduces assembly errors, and avoids misapplication risk in differential or AC-coupled signal paths - a practical advantage directly enabled by the P6SMB36CAH's CAH configuration.
P6SMB36CAH 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):
- 30.8V
- Voltage - Breakdown (Min):
- 34.2V
- Voltage - Clamping (Max) @ Ipp:
- 49.9V
- Current - Peak Pulse (10/1000µs):
- 12.6A
- 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)
P6SMB36CAH FAQ
1.How can I place an order for P6SMB36CAH through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB36CAH 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 P6SMB36CAH reliable?
The price and inventory of P6SMB36CAH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB36CAH is usually 5 days.
3.What payment methods are accepted for P6SMB36CAH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB36CAH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB36CAH?
P6SMB36CAH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB36CAH 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 P6SMB36CAH?
For technical support, including P6SMB36CAH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB36CAH requirements.
6.How does Aetrix verify that P6SMB36CAH is sourced from the original manufacturer or authorized distributors?
All P6SMB36CAH 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 P6SMB36CAH meets industry standards.
7.What is the process for return or replacement of P6SMB36CAH?
All P6SMB36CAH units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB36CAH, 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 P6SMB36CAH part is unused and in its original packaging.
Return procedure for P6SMB36CAH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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