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Taiwan Semiconductor Corporation P6SMB43AH
- Part No.:
- P6SMB43AH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB43AH.pdf
- Description:
- TVS DIODE 36.8VWM 59.3VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:5,055
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Product details
Overview
P6SMB43AH from Taiwan Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in DO-214AA (SMB) package, rated for 600W peak pulse power, 40.9–45.2V breakdown voltage (VBR), and 59.3V clamping voltage (VC) at 10.6A peak pulse current. It protects automotive and industrial power rails against ISO 7637-2 Pulse 1/2a/2b/3a/3b transients.
For engineers reviewing the P6SMB43AH datasheet, P6SMB43AH pinout, P6SMB43AH application, or P6SMB43AH equivalent, key selection criteria include unidirectional polarity, 36.8V stand-off voltage (VWM), <1µA reverse leakage at VWM, 1.0ps response time, and AEC-Q101 qualification for automotive-grade reliability.
Technical Context
The P6SMB43AH uses a glass-passivated silicon junction to achieve fast transient suppression with low capacitance and stable clamping performance across -55°C to +150°C operating range. Its thermal resistance (RθJA = 55°C/W) supports reliable operation under sustained surge conditions when mounted on standard PCB copper areas.
Designed for unidirectional protection only, it features a cathode band marking and complies with JESD201 Class 2 whisker resistance and J-STD-020 Moisture Sensitivity Level 1. It meets RoHS and halogen-free requirements per IEC 61249-2-21.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 40.9V / 45.2V - defines minimum and maximum voltage at which device enters avalanche conduction under 1mA test current |
| VWM | 36.8V - maximum continuous reverse working voltage before significant leakage begins |
| VC @ IPPM | 59.3V at 10.6A - clamped voltage during 10/1000μs surge, limiting downstream circuit stress |
| PPPSM | 600W - non-repetitive peak pulse power handling capability per 10/1000μs waveform |
| IR @ VWM | <1µA - ensures minimal standby power loss and signal integrity in high-impedance circuits |
| TJ max | +150°C - enables use in under-hood automotive environments and thermally constrained industrial enclosures |
| Response time | <1.0ps - sub-nanosecond turn-on guarantees protection before transient energy couples into sensitive ICs |
Pinout & Package
DO-214AA (SMB) surface-mount package with cathode band marking on one end; matte tin-plated leads compliant with J-STD-002 solderability; weight ≈0.090g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Ground reference terminal | Connected to system ground or low-side return path; forms current loop during clamping |
| Cathode | Protected line input | Connected to supply rail or signal line being protected; blocks reverse current until VBR exceeded |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive electronics per stress test requirements including temperature cycling, HTRB, and ESD |
| Glass passivated junction | Enhances long-term reliability and stability of VBR under thermal and humidity stress |
| ISO 7637-2 compliance | Withstands standardized automotive load-dump and inductive-switching transients without degradation |
| Low profile SMB package | Enables automated SMT placement and fits space-constrained PCB layouts typical in ECUs and ADAS modules |
| UL 94V-0 molding compound | Provides flame-retardant encapsulation required for safety-critical automotive and industrial systems |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: 12V battery-supplied ECU power input exposed to load dump and alternator transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between VBAT and GND to clamp surges before they reach DC-DC converters and microcontrollers. Use Value: Limits peak voltage to 59.3V during 10/1000μs pulses, preventing damage to 36V-rated input stages while maintaining <1µA quiescent leakage. | Use Scenario: Analog sensor output lines (e.g., pressure, temperature) routed through noisy factory environments. IC Role / Device Role / Timing Role: TVS placed at connector interface to absorb EFT bursts and electrostatic discharges before reaching op-amp inputs. Use Value: Sub-1ps response ensures clamping occurs before transient energy propagates into µV-level signal paths, preserving measurement accuracy. |
| LED Driver Overvoltage Protection | Motor Control Board Surge Suppression |
Use Scenario: Constant-current LED driver input subjected to inductive kickback from nearby relay switching. IC Role / Device Role / Timing Role: P6SMB43AH installed across input capacitor to shunt transient energy away from controller IC and MOSFET gate drivers. Use Value: 600W peak power rating handles repetitive 100V/10A spikes without thermal runaway, extending board lifetime in outdoor lighting systems. | Use Scenario: H-bridge gate driver supply rail exposed to back-EMF from brushed DC motor commutation. IC Role / Device Role / Timing Role: TVS placed at VDD rail entry point to protect level-shifters and logic inputs from voltage reversals and ringing. Use Value: 36.8V stand-off voltage allows normal 36V nominal operation while clamping >45V events, aligning with 40V-rated driver ICs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ43A | Same DO-214AA package, identical VBR (40.9–45.2V), but lower PPPSM = 600W and higher VC = 69.4V | Higher clamping voltage increases stress on downstream components during surge events | Select P6SMB43AH when tighter clamping (59.3V vs. 69.4V) is required to meet IC absolute maximum ratings |
| 1.5SMC43A | Larger DO-214AB (SMC) package, same electrical specs, higher thermal mass (RθJA = 40°C/W) | Requires larger PCB footprint and may not fit space-constrained automotive modules | Choose P6SMB43AH for compact designs where SMB footprint and AEC-Q101 qualification are mandatory |
Compared with SMBJ43A and 1.5SMC43A, the P6SMB43AH delivers superior clamping performance in a smaller, automotive-qualified package-enabling robust protection in tight-layout ECUs without compromising surge margin or thermal derating.
Availability
P6SMB43AH is available at Aetrix Electronics and suitable for automotive power management, industrial sensor interfaces, LED driver protection, and motor control board surge suppression requiring stable component supply and AEC-Q101 compliance.
Supply support for P6SMB43AH 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, serving global automotive, industrial, and consumer markets since 1979.
The P6SMB43AH belongs to TSC's AEC-Q101-qualified P6SMBxH series of surface-mount TVS diodes, engineered specifically for high-reliability transient suppression in automotive electronics and harsh-environment industrial systems.
FAQ
What is the polarity configuration of the P6SMB43AH?
The P6SMB43AH is a unidirectional TVS diode with cathode band marking indicating the protected line connection. It conducts only during reverse-biased overvoltage events, blocking forward current up to 3.5V. This polarity configuration makes it suitable for DC power rail protection where polarity is fixed and reverse conduction must be prevented.
Does the P6SMB43AH meet automotive qualification standards?
Yes, the P6SMB43AH is AEC-Q101 qualified and tested per stress requirements including high-temperature reverse bias, temperature cycling, and ESD. It also meets ISO 7637-2 Pulse 1/2a/2b/3a/3b immunity standards, making it appropriate for use in engine control units, body electronics, and ADAS modules where automotive-grade reliability is mandated.
What is the maximum clamping voltage of the P6SMB43AH under surge conditions?
The P6SMB43AH has a maximum clamping voltage (VC) of 59.3V at 10.6A peak pulse current (IPPM) using the standard 10/1000μs waveform. This value is measured at TA = 25°C and represents the upper limit of voltage seen by downstream circuitry during worst-case transient events, ensuring compatibility with 40V-rated ICs and power stages.
Can the P6SMB43AH be used in bidirectional applications?
No, the P6SMB43AH is unidirectional only. For bidirectional protection, Taiwan Semiconductor offers the P6SMB43CAH variant (with CAH suffix), which provides symmetrical clamping in both polarities. Using the P6SMB43AH in AC or reversible-polarity circuits risks failure due to forward conduction beyond its 3.5V VF rating and lack of reverse-direction breakdown specification.
What packaging and reel quantity is available for the P6SMB43AH?
The P6SMB43AH is supplied in DO-214AA (SMB) package on tape-and-reel format with 3,000 units per reel. The tape meets EIA-481 standards, and the reels are compatible with standard SMT pick-and-place equipment. Lead finish is matte tin per J-STD-002, supporting lead-free and mixed-technology assembly processes.
P6SMB43AH 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):
- 36.8V
- Voltage - Breakdown (Min):
- 40.9V
- Voltage - Clamping (Max) @ Ipp:
- 59.3V
- Current - Peak Pulse (10/1000µs):
- 10.6A
- 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)
P6SMB43AH FAQ
1.How can I place an order for P6SMB43AH through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB43AH 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 P6SMB43AH reliable?
The price and inventory of P6SMB43AH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB43AH is usually 5 days.
3.What payment methods are accepted for P6SMB43AH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB43AH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB43AH?
P6SMB43AH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB43AH 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 P6SMB43AH?
For technical support, including P6SMB43AH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB43AH requirements.
6.How does Aetrix verify that P6SMB43AH is sourced from the original manufacturer or authorized distributors?
All P6SMB43AH 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 P6SMB43AH meets industry standards.
7.What is the process for return or replacement of P6SMB43AH?
All P6SMB43AH units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB43AH, 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 P6SMB43AH part is unused and in its original packaging.
Return procedure for P6SMB43AH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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