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Taiwan Semiconductor Corporation P6SMB24AH
- Part No.:
- P6SMB24AH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB24AH.pdf
- Description:
- TVS DIODE 20.5VWM 33.2VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:6,339
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Product details
Overview
P6SMB24AH from Taiwan Semiconductor is a unidirectional 600W surface-mount transient voltage suppressor (TVS) diode with a 22.8V–25.2V breakdown voltage range, 20.5V standoff voltage, and 33.2V clamping voltage at 19A peak pulse current. It protects automotive and industrial power rails against ISO 7637-2 Pulse 1/2a/2b/3a/3b transients in DO-214AA (SMB) package.
For engineers reviewing the P6SMB24AH datasheet, P6SMB24AH pinout, P6SMB24AH application, or P6SMB24AH equivalent, key selection criteria include clamping performance under 10/1000μs surge, AEC-Q101 qualification for automotive use, low leakage (<1μA @ 20.5V), and thermal resistance (RθJA = 55°C/W) for board-level reliability in high-density layouts.
Technical Context
The P6SMB24AH operates as a unidirectional avalanche diode, triggered when reverse voltage exceeds its VBR (22.8–25.2V). Its glass-passivated junction ensures stable breakdown and low leakage, while fast response (<1.0ps) enables suppression of ESD and fast electrical fast transients before downstream IC damage occurs.
Designed for 10/1000μs waveform compliance, it delivers 600W non-repetitive peak pulse power with 33.2V clamping at 19A IPPM. Thermal performance is defined by RθJC = 10°C/W and RθJA = 55°C/W, supporting operation from –55°C to +150°C junction temperature in convection-cooled SMB footprints.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 22.8V / 25.2V - Ensures reliable turn-on above system operating voltage while avoiding false triggering |
| VWM | 20.5V - Maximum continuous reverse working voltage compatible with 24V nominal automotive systems |
| VC @ IPPM | 33.2V @ 19A - Clamping level limits downstream IC stress during ISO 7637-2 Pulse 2b (inductive load dump) |
| PPPSM | 600W - Peak pulse power rating for single-event surge immunity per 10/1000μs standard waveform |
| IR @ VWM | <1μA - Ultra-low leakage preserves battery life in always-on vehicle modules |
| TJ max | +150°C - Enables placement near heat sources (e.g., power converters) without derating concerns |
| RθJA | 55°C/W - Predictable thermal rise on standard FR-4 PCBs with 1-in² copper pour |
Pinout & Package
Package: DO-214AA (SMB), surface-mount, cathode-banded unidirectional configuration. Matte tin-plated leads meet J-STD-002 solderability; polarity marked by cathode band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current path / Surge return path | Connected to ground or low-impedance return plane; carries full IPPM during clamping |
| Cathode | Protected line connection | Connected to 24V rail or signal line; voltage referenced to anode during transient suppression |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive underhood applications including temperature cycling, humidity bias, and mechanical shock |
| Glass passivated junction | Stable VBR tolerance (±5%) and <1μA leakage over lifetime, even under thermal stress |
| ISO 7637-2 compliance | Meets Pulse 1 (inductive load disconnect), Pulse 2a/2b (load dump), and Pulse 3a/3b (switching transients) |
| Low profile SMB package | 3.5mm × 4.5mm footprint enables compact placement near connectors or IC power pins |
| Moisture sensitivity level 1 | No bake requirement before reflow; compatible with standard SMT assembly lines |
Applications
| Automotive Power Rail Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: 24V supply line in engine control unit exposed to load dump transients up to 40V for 400ms. IC Role / Device Role: Primary clamping device shunting surge energy to ground before reaching MCU power input. Use Value: Limits rail voltage to ≤33.2V during 19A transients, preventing brownout or latch-up in 3.3V/5V domain regulators. | Use Scenario: Digital input channel of programmable logic controller interfacing with 24V field sensors. IC Role / Device Role: Front-end transient suppressor on signal line prior to optocoupler or protection buffer. Use Value: Absorbs EFT bursts (IEC 61000-4-4) and contact bounce spikes without degrading signal integrity or requiring series impedance. |
| LED Driver Overvoltage Clamp | Telecom Power Interface |
Use Scenario: Constant-current LED driver in commercial lighting subjected to inductive kickback from relay switching. IC Role / Device Role: Unidirectional clamp across driver output terminals to limit reverse voltage stress on MOSFETs and LEDs. Use Value: Clamps flyback spikes to 33.2V, protecting 40V-rated driver FETs and extending LED string lifetime under frequent switching. | Use Scenario: 24V DC power input of remote telecom node powered via PoE injector or centralized supply. IC Role / Device Role: First-line defense against lightning-induced surges coupled onto building wiring. Use Value: Withstands 600W pulses without degradation, maintaining >100k-cycle surge endurance per IEC 61000-4-5 Level 3 requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ24A | Same DO-214AC (SMA) package; 600W rating; VBR = 26.7–29.5V; VC = 38.9V @ 15.4A | Higher clamping voltage reduces margin for 24V rail protection; lower IPPM limits energy handling | Select SMAJ24A only if board layout allows SMA footprint and system can tolerate 38.9V clamping |
| 1.5SMC24A | DO-214AB (SMC) package; 1500W rating; VBR = 25.1–27.7V; VC = 38.9V @ 38.5A | Larger SMC footprint increases board area; higher power rating suits heavy-duty industrial use | Choose 1.5SMC24A where higher surge repetition or longer pulse durations require greater thermal mass |
Compared with SMAJ24A and 1.5SMC24A, the P6SMB24AH offers optimal balance of compact SMB size, 33.2V clamping, and AEC-Q101 qualification-making it preferred for space-constrained automotive modules where precise 24V rail clamping is critical.
Availability
P6SMB24AH is available at Aetrix Electronics and suitable for automotive electronics, industrial PLC I/O protection, and LED driver overvoltage clamping requiring stable component supply and AEC-Q101-compliant transient suppression.
Supply support for P6SMB24AH 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 power management, protection, and interface devices.
The P6SMB24AH belongs to TSC's AEC-Q101-qualified P6SMBx(A)H TVS family, engineered specifically for robust transient suppression in automotive and harsh-environment industrial power systems.
FAQ
What is the maximum clamping voltage of the P6SMB24AH under standard test conditions?
The P6SMB24AH has a maximum clamping voltage (VC) of 33.2V at 19A peak pulse current (IPPM) using the 10/1000μs waveform. This value is measured per ANSI/IEEE C62.35 and defines the upper voltage limit imposed on protected circuits during surge events, ensuring compatibility with 24V system components rated for ≤36V absolute maximum.
Is the P6SMB24AH suitable for automotive applications?
Yes, the P6SMB24AH is AEC-Q101 qualified and meets ISO 7637-2 Pulse 1, 2a, 2b, 3a, and 3b requirements. Its glass-passivated junction, –55°C to +150°C operating range, and moisture sensitivity level 1 make it suitable for under-hood and body-control module deployments where reliability under thermal cycling and vibration is mandatory.
What does the "AH" suffix indicate in P6SMB24AH?
The "AH" suffix denotes the tighter breakdown voltage tolerance variant: P6SMB24AH has a VBR range of 22.8V–25.2V (±5%), versus 21.6V–26.4V (±10%) for the standard P6SMB24H. This improved tolerance supports more precise clamping in noise-sensitive or tightly regulated 24V systems.
How does the P6SMB24AH compare to bidirectional TVS diodes like P6SMB24CAH?
The P6SMB24AH is unidirectional and intended for DC line protection with defined polarity; P6SMB24CAH is bidirectional and used where AC signals or reversible voltage transients occur. The P6SMB24AH offers lower leakage (<1μA @ 20.5V) and better clamping efficiency on positive-going surges, while P6SMB24CAH provides symmetric protection but with higher leakage in both directions.
What is the thermal resistance from junction to ambient for the P6SMB24AH?
The P6SMB24AH has a junction-to-ambient thermal resistance (RθJA) of 55°C/W under standard JEDEC test conditions (single device on 1-in² FR-4 board with 2-oz copper). This value enables accurate thermal modeling for PCB layout-especially important when multiple P6SMB24AH devices operate in parallel or near heat-generating components.
P6SMB24AH 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):
- 20.5V
- Voltage - Breakdown (Min):
- 22.8V
- Voltage - Clamping (Max) @ Ipp:
- 33.2V
- Current - Peak Pulse (10/1000µs):
- 19A
- 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)
P6SMB24AH FAQ
1.How can I place an order for P6SMB24AH through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB24AH 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 P6SMB24AH reliable?
The price and inventory of P6SMB24AH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB24AH is usually 5 days.
3.What payment methods are accepted for P6SMB24AH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB24AH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB24AH?
P6SMB24AH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB24AH 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 P6SMB24AH?
For technical support, including P6SMB24AH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB24AH requirements.
6.How does Aetrix verify that P6SMB24AH is sourced from the original manufacturer or authorized distributors?
All P6SMB24AH 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 P6SMB24AH meets industry standards.
7.What is the process for return or replacement of P6SMB24AH?
All P6SMB24AH units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB24AH, 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 P6SMB24AH part is unused and in its original packaging.
Return procedure for P6SMB24AH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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