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Taiwan Semiconductor Corporation P6SMB24
- Part No.:
- P6SMB24
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB24.pdf
- Description:
- 600W, 24V, 10%, UNIDIRECTIONAL,
- Quantity:
- Payment:
- Shipping:
Inventory:4,225
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Product details
Overview
P6SMB24 from Taiwan Semiconductor is a unidirectional 600W surface-mount transient voltage suppressor (TVS) diode designed for overvoltage protection in DC power lines and signal paths. It features a breakdown voltage range of 21.6–26.4 V at 1.0 mA test current, a maximum clamping voltage of 34.7 V at 18 A peak pulse current, and a standoff voltage of 19.4 V with ≤1 µA reverse leakage - ideal for protecting 24 V industrial control inputs against IEC 61000-4-2 ESD and ISO 7637-2 automotive transients.
For engineers reviewing the P6SMB24 datasheet, P6SMB24 pinout, P6SMB24 application, or P6SMB24 equivalent, this device is selected for robust surge immunity in space-constrained SMB-packaged designs where fast response (<1.0 ps), low leakage, and UL 94V-0 mold compound compliance are required.
Technical Context
The P6SMB24 operates as a unidirectional avalanche diode, triggered when reverse voltage exceeds its specified VBR window (21.6–26.4 V). Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<1 µA @ 19.4 V), while its DO-214AA (SMB) package supports automated placement and meets JESD201 Class 2 whisker resistance.
Thermal performance is defined by RθJC = 10 °C/W and RθJA = 55 °C/W, enabling reliable operation up to TJ = +150 °C. It complies with ISO 7637-2 Pulse 1/2a/2b/3a/3b waveforms and delivers 600 W non-repetitive peak pulse power under 10/1000 µs conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 21.6 V / 26.4 V at 1.0 mA - defines precise overvoltage triggering threshold for 24 V nominal systems |
| VWM | 19.4 V - maximum continuous reverse operating voltage before significant leakage begins |
| IPPM | 18 A (10/1000 µs) - peak surge current it safely clamps without failure |
| VC@IPPM | 34.7 V - maximum clamped voltage seen by protected circuit during full-rated surge |
| PPPSM | 600 W - non-repetitive surge power handling capability per standard waveform |
| TJ max | +150 °C - maximum junction temperature supporting industrial ambient operation |
| Package | DO-214AA (SMB) - surface-mount outline with 0.090 g mass and matte tin-plated leads |
Pinout & Package
Package: DO-214AA (SMB), molded case with cathode band marking; polarity is unidirectional, with cathode indicated by a band on the body. Matte tin-plated leads meet J-STD-002 solderability requirements.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to system ground or lower-potential rail in unidirectional TVS configuration |
| Cathode | Reverse-biased clamping terminal | Connected to protected line (e.g., 24 V supply rail); conducts during overvoltage events |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable VBR tolerance and long-term reliability under thermal cycling |
| Clamping voltage ≤34.7 V @ 18 A | Provides safe margin below typical 40 V IC absolute maximum ratings in 24 V systems |
| Response time <1.0 ps | Protects sensitive logic and analog inputs before transient energy couples into circuitry |
| Moisture sensitivity level 1 | Enables standard SMT reflow without baking or special handling |
| RoHS & halogen-free compliant | Meets IEC 61249-2-21 and environmental requirements for industrial and automotive end equipment |
Applications
| Industrial PLC Input Protection | Automotive Body Control Module |
|---|---|
Use Scenario: 24 V digital input channel in programmable logic controller exposed to inductive kickback and load dump. IC Role / Device Role / Timing Role: Unidirectional TVS placed between field input and optocoupler/signal conditioner input. Use Value: Clamps transients to ≤34.7 V, preserving integrity of downstream 3.3 V/5 V logic interfaces and meeting IEC 61000-4-4 Level 4 immunity. |
Use Scenario: Power supply rail protection in BCM modules subjected to ISO 7637-2 Pulse 1 (inductive switching) and Pulse 3b (capacitive discharge). IC Role / Device Role / Timing Role: Primary rail clamp on 24 V battery feed prior to DC-DC converter input. Use Value: Absorbs 600 W surges without degradation, maintaining system uptime during vehicle cranking and alternator load dump events. |
| Switching Mode Power Supply Output | Factory Automation Sensor Interface |
Use Scenario: Secondary-side 24 V output rail in AC/DC adapter subject to cross-regulation overshoot and external ESD. IC Role / Device Role / Timing Role: Final-stage overvoltage clamp after secondary rectifier and filter capacitor. Use Value: Limits output excursion to 34.7 V during startup or fault, preventing damage to connected 24 V actuators and controllers. |
Use Scenario: Analog current loop (4–20 mA) or digital IO line connecting industrial sensors to control cabinet over long cables. IC Role / Device Role / Timing Role: Point-of-entry TVS on sensor interface PCB, mounted adjacent to connector. Use Value: Suppresses induced surges from nearby motor drives or lightning coupling, ensuring uninterrupted data acquisition and reducing false alarms. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ24A | Bidirectional variant; VBR = 25.6–28.4 V; same SMB package and 600 W rating | Required where bidirectional protection (e.g., AC-coupled signals or floating buses) is needed | Select P6SMB24 for unidirectional DC rails; choose SMBJ24A only if symmetrical clamping in both polarities is mandatory |
| 1.5SMC24A | Same VBR range (21.6–26.4 V), but DO-214AB (SMC) package - larger footprint and higher thermal mass (RθJA = 40 °C/W) | Suitable for higher ambient temperatures or longer-duration surges where SMB thermal limits may be exceeded | Prefer P6SMB24 for space-constrained layouts; use 1.5SMC24A only when board area allows and derating margins require lower junction temperature rise |
Compared with SMBJ24A and 1.5SMC24A, the P6SMB24 offers optimal balance of compact SMB footprint, unidirectional precision clamping at 24 V, and industry-standard surge ratings - making it the preferred choice for high-density 24 V DC protection where polarity is fixed and board real estate is limited.
Availability
P6SMB24 is available at Aetrix Electronics and suitable for industrial PLC input protection, automotive body control modules, and switching mode power supply outputs requiring stable component supply, consistent lead-time visibility, and full traceability across production batches.
Supply support for P6SMB24 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 industrial, computing, and automotive markets.
The P6SMB24 belongs to TSC's P6SMB series of 600 W SMB-packaged TVS diodes, engineered specifically for cost-effective, high-reliability overvoltage protection in space-constrained DC power and interface circuits.
FAQ
What is the polarity configuration of the P6SMB24?
The P6SMB24 is a unidirectional TVS diode, with cathode marked by a band on the DO-214AA (SMB) package body. It conducts only during reverse overvoltage events on the cathode side and blocks forward current like a standard diode. This configuration is appropriate for protecting grounded 24 V supply rails and avoids unintended conduction in DC-coupled circuits - a key distinction from bidirectional variants such as P6SMB24A.
Does the P6SMB24 meet automotive transient standards?
Yes, the P6SMB24 meets ISO 7637-2 Pulse 1 (inductive switch-off), Pulse 2a/2b (battery disconnection and load dump), and Pulse 3a/3b (capacitive coupling and ignition noise) requirements. Its 600 W peak pulse power rating and clamping voltage of 34.7 V at 18 A ensure compatibility with 12 V/24 V automotive electrical architectures - confirmed in Taiwan Semiconductor's Q2209 specification document.
What is the maximum steady-state power dissipation for the P6SMB24?
The P6SMB24 has a steady-state power dissipation (Ptot) of 3 W at TA = 25 °C. This value decreases with rising ambient temperature per the derating curve in Figure 2 of the datasheet. At 100 °C ambient, usable power drops to approximately 1.5 W - a critical consideration when using the P6SMB24 in thermally dense environments such as enclosed power supplies or engine bay ECUs.
How does the P6SMB24 compare to the P6SMB24A variant?
The P6SMB24A has tighter VBR tolerance (22.8–25.2 V vs. 21.6–26.4 V for P6SMB24) and slightly higher VWM (20.5 V vs. 19.4 V), resulting in lower leakage and improved margin against nuisance triggering. Both share identical package, power rating, and clamping performance. The P6SMB24 is preferred where cost sensitivity outweighs tight voltage tolerance; P6SMB24A suits precision 24 V systems with strict leakage budgets.
Is the P6SMB24 RoHS and halogen-free compliant?
Yes, the P6SMB24 is RoHS compliant and halogen-free per IEC 61249-2-21. Its molding compound meets UL 94V-0 flammability rating, and matte tin-plated leads satisfy J-STD-002 solderability requirements. These qualifications are explicitly stated in the "Features" section of Taiwan Semiconductor's Q2209 datasheet revision and verified in the ordering information table.
P6SMB24 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:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
P6SMB24 FAQ
1.How can I place an order for P6SMB24 through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB24 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 P6SMB24 reliable?
The price and inventory of P6SMB24 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB24 is usually 5 days.
3.What payment methods are accepted for P6SMB24?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB24 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB24?
P6SMB24 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB24 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 P6SMB24?
For technical support, including P6SMB24 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB24 requirements.
6.How does Aetrix verify that P6SMB24 is sourced from the original manufacturer or authorized distributors?
All P6SMB24 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 P6SMB24 meets industry standards.
7.What is the process for return or replacement of P6SMB24?
All P6SMB24 units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB24, 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 P6SMB24 part is unused and in its original packaging.
Return procedure for P6SMB24:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB24 Tags
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