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Taiwan Semiconductor Corporation P6SMB33CH
- Part No.:
- P6SMB33CH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB33CH.pdf
- Description:
- 600W, 33V, 10%, BIDIRECTIONAL, T
- Quantity:
- Payment:
- Shipping:
Inventory:9,098
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Product details
Overview
P6SMB33CH from Taiwan Semiconductor is a unidirectional 600W surface-mount transient voltage suppressor (TVS) diode with a breakdown voltage range of 29.7–36.3V, clamping voltage of 47.7V at 13.0A peak pulse current, and DO-214AA (SMB) package. It provides robust ESD and electrical fast transient protection for automotive lighting control modules, power supply input stages, and industrial sensor interfaces.
For engineers reviewing the P6SMB33CH datasheet, P6SMB33CH pinout, P6SMB33CH application, or P6SMB33CH equivalent, key selection criteria include its AEC-Q101 qualification, 1.0mA test current, <1μA reverse leakage at 26.8V stand-off voltage, and compliance with ISO 7637-2 Pulse 1/2a/2b/3a/3b.
Technical Context
The P6SMB33CH uses a glass-passivated silicon junction to achieve fast response time (<1.0ps from 0V to VBR(min)) and stable clamping under repetitive transients. Its unidirectional configuration enables polarity-sensitive protection in DC power rails where forward conduction must be controlled.
Thermal performance is defined by RθJC = 10°C/W and RθJA = 55°C/W, supporting operation from –55°C to +150°C junction temperature. The device meets JESD201 Class 2 whisker resistance and J-STD-020 Moisture Sensitivity Level 1.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 29.7V / 36.3V - Ensures reliable triggering above system nominal voltage while avoiding false trips during normal operation |
| VWM | 26.8V - Maximum continuous reverse working voltage compatible with 24V automotive systems |
| IPPM | 13.0A - Peak pulse current capability under 10/1000μs waveform, defining surge handling capacity |
| VC@IPPM | 47.7V - Clamped voltage limiting downstream IC stress during worst-case transients |
| PPPSM | 600W - Non-repetitive peak pulse power rating per standard IEC 61000-4-5 and ISO 7637-2 |
| IR@VWM | <1μA - Ultra-low leakage preserves battery life and signal integrity in always-on circuits |
| TJ(max) | +150°C - Enables placement near heat sources in engine control units and power converters |
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 requirements.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction path | Connects to lower-potential side of protected line; conducts only during positive overvoltage events |
| Cathode | Clamping reference node | Connects to higher-potential rail (e.g., VIN); defines clamping threshold relative to ground or return path |
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 moisture resistance versus epoxy-passivated alternatives |
| ISO 7637-2 compliance | Withstands Pulse 1 (inductive load dump), Pulse 2a/2b (switching transients), and Pulse 3a/3b (capacitive coupling) waveforms |
| Low profile SMB package | Enables automated pick-and-place assembly and fits high-density PCB layouts with 4.5mm × 3.9mm footprint |
| Halogen-free & RoHS | Meets IEC 61249-2-21 and EU RoHS Directive 2011/65/EU for environmentally compliant manufacturing |
Applications
| Automotive Lighting Control | Industrial Sensor Interface |
|---|---|
Use Scenario: Protecting LED driver ICs from load-dump transients in vehicle headlamp modules. IC Role / Device Role / Timing Role: Unidirectional TVS placed between 24V supply rail and ground to clamp spikes up to ±100V. Use Value: Limits voltage seen by driver IC to ≤47.7V, preventing latch-up or gate oxide damage during ISO 7637-2 Pulse 1 events. | Use Scenario: Safeguarding 4–20mA analog sensor transmitters against ESD and cable-induced surges. IC Role / Device Role / Timing Role: Standoff protection on loop-powered transmitter input, absorbing fast transients before they reach precision op-amps. Use Value: Sub-1μA leakage at 26.8V ensures minimal impact on current-loop accuracy; 47.7V clamping prevents ADC saturation. |
| DC Power Supply Input | Motor Drive Gate Protection |
Use Scenario: Input-stage surge suppression for 24V industrial SMPS front-ends exposed to lightning-induced surges. IC Role / Device Role / Timing Role: Primary TVS across bulk capacitor input, triggered before MOV or fuse activation. Use Value: 600W peak power rating handles 10/1000μs surges without degradation; 13.0A IPPM supports coordination with upstream fusing. | Use Scenario: Clamping gate-source voltage spikes on N-channel MOSFETs in H-bridge motor drivers. IC Role / Device Role / Timing Role: Bidirectional protection not applicable; P6SMB33CH used as unidirectional clamp from gate to source (cathode to gate). Use Value: Fast <1.0ps response captures nanosecond-scale ringing; 26.8V VWM allows safe margin below typical 30V gate ratings. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ33A | Same DO-214AA package, bidirectional variant with symmetric VBR (28.2–31.4V), higher VC (53.3V) | Required where AC-coupled or polarity-agnostic protection is needed (e.g., data lines) | Select P6SMB33CH for DC rails requiring unidirectional clamping and tighter VC |
| 1.5SMC33A | Larger DO-214AB (SMC) package, same 33V nominal, 600W rating, but higher RθJA (40°C/W) | Better thermal dissipation in high-ambient environments; requires larger PCB area | Choose P6SMB33CH when space-constrained layouts demand SMB footprint |
Compared with SMBJ33A and 1.5SMC33A, the P6SMB33CH offers optimal balance of compact SMB packaging, low clamping voltage (47.7V), and AEC-Q101 qualification-making it preferred for automotive 24V power rail protection where board space and precise voltage limiting are critical.
Availability
P6SMB33CH is available at Aetrix Electronics and suitable for automotive lighting control, industrial sensor interface, and DC power supply input applications requiring stable component supply and full traceability.
Supply support for P6SMB33CH 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 for automotive and industrial markets.
The P6SMB33CH belongs to TSC's AEC-Q101-qualified P6SMBxH series, engineered specifically for robust transient suppression in harsh automotive environments-including engine bays and chassis-mounted ECUs.
FAQ
What is the clamping voltage of the P6SMB33CH and how is it measured?
The P6SMB33CH has a maximum clamping voltage (VC) of 47.7V at 13.0A peak pulse current (IPPM) under a 10/1000μs waveform. This value is measured per ANSI/IEEE C62.35 standards and represents the upper voltage limit imposed on protected circuitry during worst-case surge events. The P6SMB33CH maintains this clamping performance across its operating temperature range.
Is the P6SMB33CH suitable for automotive applications?
Yes, the P6SMB33CH is AEC-Q101 qualified and meets ISO 7637-2 Pulse 1/2a/2b/3a/3b requirements-making it suitable for automotive power rail protection including body control modules, lighting systems, and infotainment power inputs. Its –55°C to +150°C junction temperature range and JESD201 Class 2 whisker resistance further validate its use in under-hood environments.
What does the 'CH' suffix indicate in P6SMB33CH?
The 'CH' suffix in P6SMB33CH denotes a unidirectional TVS diode with cathode-band polarity marking and optimized for DC applications. It distinguishes the part from bidirectional variants (e.g., P6SMB33CAH) and confirms compliance with the P6SMBxH family's glass-passivated junction construction and AEC-Q101 qualification.
How does the P6SMB33CH compare to the P6SMB33AH variant?
The P6SMB33AH has a tighter breakdown voltage range (31.4–34.7V vs. 29.7–36.3V for P6SMB33CH), higher stand-off voltage (28.2V vs. 26.8V), and slightly lower clamping voltage (45.7V vs. 47.7V). Both share identical package, power rating, and qualification. Choose P6SMB33CH for broader VBR tolerance in cost-sensitive designs; select P6SMB33AH where tighter voltage control is required.
Can the P6SMB33CH be used in bidirectional signal line protection?
No-the P6SMB33CH is a unidirectional TVS diode and must not be used on AC or bidirectional signal paths without external circuitry. For such applications, use the bidirectional P6SMB33CAH variant instead. Using P6SMB33CH in reverse-biased configurations risks permanent failure due to lack of symmetrical breakdown characteristics.
P6SMB33CH 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):
- 26.8V
- Voltage - Breakdown (Min):
- 29.7V
- Voltage - Clamping (Max) @ Ipp:
- 47.7V
- Current - Peak Pulse (10/1000µs):
- 13A
- 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)
P6SMB33CH FAQ
1.How can I place an order for P6SMB33CH through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB33CH 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 P6SMB33CH reliable?
The price and inventory of P6SMB33CH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB33CH is usually 5 days.
3.What payment methods are accepted for P6SMB33CH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB33CH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB33CH?
P6SMB33CH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB33CH 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 P6SMB33CH?
For technical support, including P6SMB33CH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB33CH requirements.
6.How does Aetrix verify that P6SMB33CH is sourced from the original manufacturer or authorized distributors?
All P6SMB33CH 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 P6SMB33CH meets industry standards.
7.What is the process for return or replacement of P6SMB33CH?
All P6SMB33CH units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB33CH, 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 P6SMB33CH part is unused and in its original packaging.
Return procedure for P6SMB33CH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB33CH Tags
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