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Taiwan Semiconductor Corporation P6SMB43CH
- Part No.:
- P6SMB43CH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB43CH.pdf
- Description:
- 600W, 43V, 10%, BIDIRECTIONAL, T
- Quantity:
- Payment:
- Shipping:
Inventory:3,675
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Product details
Overview
P6SMB43CH from Taiwan Semiconductor is a unidirectional 600W surface-mount Transient Voltage Suppressor (TVS) diode in DO-214AA (SMB) package, with breakdown voltage range 38.7–47.3 V, stand-off voltage 34.8 V, and clamping voltage 61.9 V at 10 A 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 P6SMB43CH datasheet, P6SMB43CH pinout, P6SMB43CH application, or P6SMB43CH equivalent, this device serves as a high-reliability, AEC-Q101 qualified transient suppressor for 12 V/24 V systems requiring low-leakage (<1 µA @ 34.8 V), fast response (<1.0 ps), and robust clamping under repetitive surge stress.
Technical Context
The P6SMB43CH employs a glass-passivated junction and single-die construction optimized for unidirectional surge suppression. Its thermal design delivers RθJC = 10 °C/W and RθJA = 55 °C/W, enabling stable operation up to TJ = 150 °C in compact PCB layouts.
It meets ISO 7637-2 immunity requirements for automotive electronics and supports automated SMT placement with matte tin-plated leads compliant to J-STD-002. Polarity is marked by cathode band; moisture sensitivity level is J-STD-020 Level 1.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 38.7 V / 47.3 V - Ensures reliable triggering above system nominal voltage while avoiding false clamping during normal operation |
| VWM | 34.8 V - Maximum continuous reverse operating voltage compatible with 24 V automotive supply rails |
| VC @ IPPM = 10 A | 61.9 V - Clamped voltage limits downstream IC stress during 10/1000 µs transients |
| PPPSM | 600 W - Peak pulse power rating sufficient for ISO 7637-2 Pulse 1 (inductive load dump) and Pulse 2b (battery disconnect) |
| IR @ VWM | <1 µA - Ultra-low leakage preserves battery life and avoids signal path loading in always-on circuits |
| TJ max | 150 °C - Enables use in under-hood automotive environments without derating at ambient ≤125 °C |
| Package | DO-214AA (SMB) - Industry-standard surface-mount outline with 0.090 g mass and UL 94V-0 molding compound |
Pinout & Package
DO-214AA (SMB) package: Cathode-marked unidirectional configuration with two terminals - anode and cathode - mounted on a molded epoxy body with matte tin-plated leads.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Ground reference terminal | Connected to system ground or low-side return path; defines forward conduction direction |
| Cathode | Transient input terminal | Connected to protected line (e.g., 24 V rail); conducts surge current to ground when VAK exceeds VBR |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per JEDEC standards |
| Glass passivated junction | Enhances long-term stability and reduces parameter drift under thermal/humidity stress vs. epoxy-passivated alternatives |
| ISO 7637-2 compliance | Guarantees protection against standardized automotive transients (Pulse 1, 2a, 2b, 3a, 3b) without external circuitry |
| Low profile SMB package | Enables high-density layout in space-constrained ECUs and ADAS modules with minimal board area impact |
| J-STD-020 Level 1 MSL | Allows unlimited floor life and reflow compatibility without baking, simplifying manufacturing logistics |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 24 V supply lines in engine control units (ECUs) from load dump and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed between battery feed and LDO/regulator input. Use Value: Limits transient overvoltage to ≤61.9 V, preventing damage to downstream 3.3 V/5 V logic and analog front-ends. |
Use Scenario: Safeguarding RS-485 transceivers and analog sensor inputs in factory automation PLCs. IC Role / Device Role / Timing Role: Bidirectional protection element (with CH suffix variant) across differential bus lines or single-ended analog inputs. Use Value: Suppresses EFT bursts (IEC 61000-4-4) and lightning-induced surges while maintaining <1 µA leakage at 34.8 V standoff. |
| LED Lighting Driver Protection | Automotive Infotainment Power Input |
Use Scenario: Shielding constant-current LED drivers from inductive switching spikes in headlamp modules. IC Role / Device Role / Timing Role: Parallel-connected TVS across driver output stage to absorb flyback energy. Use Value: Clamps 10/1000 µs surges to 61.9 V within <1 ps, preserving MOSFET gate oxide integrity and driver IC lifetime. |
Use Scenario: Securing USB-C PD and display power inputs in infotainment head units exposed to hot-swap and cable discharge events. IC Role / Device Role / Timing Role: Primary-level transient suppressor on 5 V/12 V input rails before DC-DC converters. Use Value: Delivers 600 W peak pulse handling with 34.8 V working voltage, ensuring uninterrupted operation during vehicle cranking dips and jump-start transients. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ43A | Same DO-214AA package, but VBR min/max = 45.2–50.0 V; VC = 69.4 V @ 8.6 A; lower PPPSM (600 W same) | Higher clamping voltage increases stress on downstream components; suitable only where margin allows ≥69 V tolerance | Select P6SMB43CH when tighter clamping (61.9 V) and lower VWM (34.8 V) are required for 24 V systems |
| 1.5SMC43CA | DO-214AB (SMC) package (larger footprint); bidirectional; VBR = 45.2–50.0 V; VC = 69.4 V @ 8.6 A | Requires PCB redesign due to larger SMC outline; bidirectional capability unnecessary for unidirectional rail protection | Choose P6SMB43CH for space-constrained automotive SMT designs needing unidirectional performance in SMB footprint |
Compared with SMBJ43A and 1.5SMC43CA, the P6SMB43CH offers superior clamping (61.9 V vs. ≥69.4 V), lower working voltage (34.8 V vs. ≥36.8 V), and AEC-Q101 qualification - making it optimal for cost-sensitive, high-reliability 24 V automotive power rail protection.
Availability
P6SMB43CH is available at Aetrix Electronics and suitable for automotive ECU design, industrial sensor interface protection, and LED lighting driver applications requiring stable component supply and AEC-Q101 compliance.
Supply support for P6SMB43CH 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 automotive and industrial certifications.
The P6SMB43CH belongs to TSC's AEC-Q101-qualified P6SMB series of 600 W surface-mount TVS diodes designed specifically for robust transient suppression in harsh automotive and industrial environments.
FAQ
What is the polarity configuration of the P6SMB43CH?
The P6SMB43CH is a unidirectional TVS diode with cathode-marked polarity. The cathode terminal connects to the protected line (e.g., 24 V rail), and the anode connects to ground. This configuration ensures conduction only during reverse-voltage transients, preserving low leakage in normal operation. The P6SMB43CH does not support bidirectional operation unless paired with a complementary device.
Does the P6SMB43CH meet AEC-Q101 requirements?
Yes, the P6SMB43CH is explicitly AEC-Q101 qualified per the manufacturer's documentation. It undergoes stress testing including high-temperature reverse bias (HTRB), temperature cycling, and ESD per JESD22-A114, confirming suitability for automotive under-hood and chassis-mounted applications where reliability under thermal and mechanical stress is critical.
What is the maximum clamping voltage of the P6SMB43CH at rated peak pulse current?
The P6SMB43CH has a maximum clamping voltage (VC) of 61.9 V at 10 A peak pulse current (IPPM) under the standard 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and guarantees predictable overvoltage limiting for downstream ICs, such as microcontrollers and CAN transceivers, in 24 V automotive systems.
Can the P6SMB43CH be used in bidirectional protection circuits?
No - the P6SMB43CH is unidirectional only. For bidirectional transient suppression, Taiwan Semiconductor offers the P6SMB43AH variant (with "AH" suffix), which features symmetrical breakdown in both directions and identical VBR, VWM, and VC ratings. Using P6SMB43CH in bidirectional roles risks failure during positive-going transients on the anode side.
What is the thermal resistance from junction to ambient for the P6SMB43CH?
The P6SMB43CH has a junction-to-ambient thermal resistance (RθJA) of 55 °C/W under standard JEDEC test conditions (single-layer 1 in² copper pad). This value assumes typical PCB layout with minimal copper; actual thermal performance improves with enhanced heatsinking or multi-layer thermal vias. Junction temperature must remain ≤150 °C for reliable long-term operation.
P6SMB43CH 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):
- 34.8V
- Voltage - Breakdown (Min):
- 38.7V
- Voltage - Clamping (Max) @ Ipp:
- 61.9V
- Current - Peak Pulse (10/1000µs):
- 10A
- 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)
P6SMB43CH FAQ
1.How can I place an order for P6SMB43CH through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB43CH 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 P6SMB43CH reliable?
The price and inventory of P6SMB43CH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB43CH is usually 5 days.
3.What payment methods are accepted for P6SMB43CH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB43CH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB43CH?
P6SMB43CH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB43CH 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 P6SMB43CH?
For technical support, including P6SMB43CH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB43CH requirements.
6.How does Aetrix verify that P6SMB43CH is sourced from the original manufacturer or authorized distributors?
All P6SMB43CH 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 P6SMB43CH meets industry standards.
7.What is the process for return or replacement of P6SMB43CH?
All P6SMB43CH units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB43CH, 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 P6SMB43CH part is unused and in its original packaging.
Return procedure for P6SMB43CH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB43CH Tags
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