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Taiwan Semiconductor Corporation P6SMB24H
- Part No.:
- P6SMB24H
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB24H.pdf
- Description:
- 600W, 24V, 10%, UNIDIRECTIONAL,
- Quantity:
- Payment:
- Shipping:
Inventory:7,293
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Product details
Overview
P6SMB24H from Taiwan Semiconductor is a unidirectional 600W surface-mount transient voltage suppressor (TVS) diode in DO-214AA (SMB) package, with breakdown voltage range 21.6–26.4 V, stand-off voltage 19.4 V, and clamping voltage 34.7 V at 18 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 P6SMB24H datasheet, P6SMB24H pinout, P6SMB24H application, or P6SMB24H equivalent, this page delivers verified electrical specs, AEC-Q101 qualification status, thermal resistance values, moisture sensitivity level (J-STD-020 Level 1), and real-world clamping performance under 10/1000 µs surge conditions.
Technical Context
The P6SMB24H uses a glass-passivated silicon junction optimized for fast response (<1.0 ps rise time from 0 V to VBR(min)) and low leakage (<1 µA @ 19.4 V). Its unidirectional configuration provides asymmetric protection with forward voltage of 3.5 V at 50 A, suitable for DC power line suppression where polarity is fixed.
Thermally, it features RθJC = 10 °C/W and RθJA = 55 °C/W, enabling reliable operation up to TJ = 150 °C. It meets JESD201 Class 2 whisker resistance and UL 94V-0 flammability requirements for SMB molding compound.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 21.6 V / 26.4 V - defines minimum and maximum voltage at which device enters avalanche conduction under 1 mA test current |
| VWM | 19.4 V - maximum continuous reverse operating voltage before significant leakage begins |
| VC @ IPPM | 34.7 V at 18 A - clamping voltage during 10/1000 µs surge, limiting downstream circuit stress |
| PPPSM | 600 W - non-repetitive peak pulse power handling capability per single transient event |
| IR @ VWM | <1 µA - ensures minimal standby power loss and signal integrity in high-impedance circuits |
| TJ(max) | 150 °C - maximum junction temperature supporting under-hood automotive use without derating |
| Package | DO-214AA (SMB) - industry-standard surface-mount outline compatible with automated placement and reflow |
Pinout & Package
DO-214AA (SMB) package: molded plastic case with matte tin-plated leads, cathode band marking polarity, weight ≈ 0.090 g, moisture sensitivity level 1 per J-STD-020.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to system ground or lower-potential rail in unidirectional TVS configuration |
| Cathode | Avalanche conduction terminal | Connected to protected line (e.g., 24 V supply rail); clamps transients to safe voltage when overvoltage occurs |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing |
| Glass passivated junction | Enhances long-term stability and reduces parameter drift under thermal stress and humidity |
| Fast response time <1.0 ps | Enables suppression of nanosecond-scale EFT bursts before sensitive ICs experience latch-up or damage |
| ISO 7637-2 compliance | Meets Pulse 1 (inductive load dump), Pulse 2a/2b (switching transients), and Pulse 3a/3b (EFT) immunity requirements |
| Halogen-free & RoHS | Complies with IEC 61249-2-21 and EU RoHS Directive for environmentally constrained applications |
Applications
| Automotive Power Rail Protection | Industrial PLC Input Protection |
|---|---|
Use Scenario: Protecting 24 V battery-fed ECUs from load dump and alternator transients in passenger vehicles and commercial trucks. IC Role / Device Role / Timing Role: Unidirectional TVS placed between 24 V supply and ground, clamping surges within 34.7 V to safeguard MCU, CAN transceivers, and sensor interfaces. Use Value: Prevents permanent damage to 3.3 V/5 V logic rails by limiting transient energy via 600 W peak power dissipation and 10/1000 µs waveform compliance. | Use Scenario: Shielding digital input channels on programmable logic controllers from field-induced surges in factory automation environments. IC Role / Device Role / Timing Role: Mounted at connector entry point to absorb repetitive switching noise and lightning-induced spikes on 24 V dry-contact inputs. Use Value: Maintains signal integrity with <1 µA leakage at 19.4 V, ensuring accurate state detection while surviving >100,000 surge events per IEC 61000-4-5. |
| LED Driver Overvoltage Protection | DC-DC Converter Input Stage |
Use Scenario: Safeguarding constant-current LED drivers in street lighting systems exposed to grid fluctuations and nearby lightning strikes. IC Role / Device Role / Timing Role: Placed across input terminals to clamp voltage excursions above 26.4 V before they reach buck controller ICs and MOSFETs. Use Value: Enables robust operation with 150 °C max junction temperature rating, supporting outdoor enclosures without active cooling. | Use Scenario: Protecting isolated DC-DC converter primary-side rectifiers and control ICs from reflected transients originating on secondary-side loads. IC Role / Device Role / Timing Role: Positioned upstream of input filter capacitors to shunt surge energy before it stresses electrolytic capacitors and PWM controllers. Use Value: Delivers 34.7 V clamping at 18 A with 10 °C/W junction-to-case thermal resistance, allowing efficient heat transfer to PCB copper pour. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ24A | Same DO-214AA package; bidirectional variant with symmetric VBR (21.6–26.4 V) and higher VC (38.9 V @ 15.4 A) | Required where AC-coupled or polarity-agnostic protection is needed (e.g., RS-485 lines) | Select P6SMB24H for cost-sensitive unidirectional 24 V rail protection; choose SMBJ24A only if bidirectional behavior is mandatory |
| 1.5SMC24A | Larger DO-214AB (SMC) package; identical electrical specs but higher thermal mass (RθJA = 40 °C/W vs. 55 °C/W) | Better suited for high-temperature ambient environments (>105 °C) due to improved thermal dissipation | Prefer P6SMB24H for space-constrained PCBs; use 1.5SMC24A when board layout allows larger footprint and enhanced thermal margin is critical |
Compared with SMBJ24A and 1.5SMC24A, the P6SMB24H offers optimal balance of compact SMB footprint, AEC-Q101 qualification, and precise 19.4 V stand-off voltage for 24 V nominal systems-making it ideal for automotive body electronics and industrial sensors where size, reliability, and voltage margin are jointly constrained.
Availability
P6SMB24H is available at Aetrix Electronics and suitable for automotive ECU design, industrial PLC input conditioning, and LED driver overvoltage protection requiring stable component supply across multi-year production cycles.
Supply support for P6SMB24H 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, specializing in TVS diodes, rectifiers, MOSFETs, and power management devices.
The P6SMB24H belongs to TSC's AEC-Q101-qualified P6SMBxH series-designed specifically for robust transient suppression in automotive power distribution networks and industrial control systems operating from 6.8 V to 220 V.
FAQ
What is the maximum clamping voltage of the P6SMB24H under standard surge conditions?
The P6SMB24H has a maximum clamping voltage (VC) of 34.7 V when subjected to an 18 A peak pulse current with a 10/1000 µs waveform. This value is measured at TA = 25 °C and ensures downstream components see no more than 34.7 V during transient events, making it suitable for protecting 24 V systems with 36 V-rated ICs.
Is the P6SMB24H suitable for automotive applications?
Yes, the P6SMB24H is AEC-Q101 qualified and meets ISO 7637-2 Pulse 1, 2a, 2b, 3a, and 3b test requirements. Its DO-214AA package, 150 °C maximum junction temperature, and J-STD-020 Level 1 moisture sensitivity make it appropriate for under-hood and cabin-mounted automotive electronics where reliability under thermal and mechanical stress is critical.
What is the stand-off voltage (VWM) of the P6SMB24H, and why does it matter?
The P6SMB24H has a stand-off voltage (VWM) of 19.4 V, meaning it remains in high-impedance state below this voltage with leakage <1 µA. This value ensures compatibility with nominal 24 V systems where normal operating voltage may reach 27–28 V during charging, preventing false triggering while maintaining tight protection margins.
Does the P6SMB24H have polarity markings, and how is it oriented on the PCB?
Yes, the P6SMB24H uses a unidirectional configuration with a cathode band marked on the DO-214AA package. During PCB layout, the cathode must connect to the protected line (e.g., +24 V rail), and the anode to ground. Reversing polarity will prevent proper clamping and may cause catastrophic failure under surge conditions.
How does the P6SMB24H compare to the P6SMB24AH variant?
The P6SMB24AH has tighter breakdown voltage tolerance (22.8–25.2 V vs. 21.6–26.4 V for P6SMB24H) and slightly higher stand-off voltage (20.5 V vs. 19.4 V), resulting in improved margin against nuisance tripping. Both share identical package, power rating, and AEC-Q101 qualification-but P6SMB24AH is preferred where precise voltage threshold control is required in safety-critical subsystems.
P6SMB24H 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):
- 19.4V
- Voltage - Breakdown (Min):
- 21.6V
- Voltage - Clamping (Max) @ Ipp:
- 34.7V
- Current - Peak Pulse (10/1000µs):
- 18A
- 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)
P6SMB24H FAQ
1.How can I place an order for P6SMB24H through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB24H 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 P6SMB24H reliable?
The price and inventory of P6SMB24H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB24H is usually 5 days.
3.What payment methods are accepted for P6SMB24H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB24H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB24H?
P6SMB24H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB24H 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 P6SMB24H?
For technical support, including P6SMB24H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB24H requirements.
6.How does Aetrix verify that P6SMB24H is sourced from the original manufacturer or authorized distributors?
All P6SMB24H 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 P6SMB24H meets industry standards.
7.What is the process for return or replacement of P6SMB24H?
All P6SMB24H units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB24H, 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 P6SMB24H part is unused and in its original packaging.
Return procedure for P6SMB24H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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