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Vishay General Semiconductor - Diodes Division P6SMB24AHM3_A/H
- Part No.:
- P6SMB24AHM3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB24AHM3_A/H.pdf
- Description:
- TVS DIODE 20.5VWM 33.2VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:4,547
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Product details
Overview
P6SMB24AHM3_A/H from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode designed for robust overvoltage protection in power rails and signal lines. It features a 24 V standoff voltage (VWM), 25.2 V maximum breakdown voltage (VBR), 33.2 V clamping voltage at 18.1 A peak pulse current, and 600 W peak pulse power rating with 10/1000 μs waveform - deployed in automotive sensor interfaces, industrial I/O modules, and DC power supplies.
For engineers reviewing the P6SMB24AHM3_A/H datasheet, P6SMB24AHM3_A/H pinout, P6SMB24AHM3_A/H application, or P6SMB24AHM3_A/H equivalent, key selection criteria include clamping performance under repetitive surge conditions, AEC-Q101 qualification status, SMB (DO-214AA) package thermal resistance, and unidirectional polarity marking for correct PCB orientation.
Technical Context
The P6SMB24AHM3_A/H operates as a unidirectional avalanche diode, conducting only when reverse voltage exceeds its breakdown threshold (22.8–25.2 V at 1 mA), then clamping transients to ≤33.2 V at 18.1 A. Its glass-passivated junction ensures stable leakage (<1.0 μA at 20.5 V) and fast response time (<1.0 ns).
Designed for surface-mount assembly on standard 0.2" × 0.2" copper pads, it delivers 600 W peak pulse power with 0.01% duty cycle, derated above 25 °C per Fig. 2, and meets J-STD-020 MSL Level 1 (260 °C peak reflow). The HM3 suffix confirms halogen-free, RoHS-compliant, and AEC-Q101 qualified construction.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 20.5 V - Maximum continuous reverse operating voltage before significant conduction begins; defines safe DC/AC rail margin. |
| VBR (Breakdown Voltage) | 22.8 V min / 25.2 V max at 1 mA - Precise avalanche initiation range ensuring predictable turn-on during transients. |
| VC (Clamping Voltage) | 33.2 V at 18.1 A IPPM - Peak voltage seen by protected circuit during worst-case 10/1000 μs surge; critical for IC survival. |
| PPPM (Peak Pulse Power) | 600 W - Sustained transient energy absorption capability with 10/1000 μs waveform and 0.01% duty cycle. |
| RθJA | 100 °C/W - Junction-to-ambient thermal resistance on standard PCB pad layout; determines temperature rise under power dissipation. |
| TJ max | +150 °C - Maximum allowable junction temperature; supports operation in under-hood automotive and industrial environments. |
| AEC-Q101 Qualified | Yes - Validated for automotive-grade reliability including temperature cycling, humidity bias, and mechanical shock testing. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, low-profile case with matte tin-plated leads solderable per J-STD-002. Cathode indicated by band marking on unidirectional devices.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential side of protected line (e.g., GND or return path); enables unidirectional clamping to ground. |
| Cathode | Avalanche conduction terminal | Connected to higher-potential side (e.g., +24 V rail); reverse-biased during normal operation, avalanches during overvoltage events. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 μs) | Enables protection against high-energy load dump and inductive switching surges without failure. |
| Low clamping ratio (VC/VBR ≈ 1.31) | Minimizes voltage overshoot across protected ICs, improving system-level surge immunity margin. |
| AEC-Q101 qualified (HM3 suffix) | Validated for automotive electronics use, including engine control units and ADAS sensor interfaces. |
| MSL Level 1 (260 °C peak) | Supports standard lead-free reflow processes without preconditioning or special handling. |
| Glass passivated junction | Ensures long-term stability of leakage current and breakdown voltage under thermal/humidity stress. |
Applications
| Automotive Sensor Interface Protection | Industrial 24 V DC Power Rail Clamping |
|---|---|
Use Scenario: Protecting CAN/LIN transceivers and analog sensor front-ends (e.g., pressure, temperature) from ISO 7637-2 pulse 1, 2a, and 5a transients in vehicle ECUs. IC Role / Device Role / Timing Role: Unidirectional TVS placed between sensor supply line and chassis ground to clamp negative-going spikes and positive load-dump surges. Use Value: Limits voltage excursion to ≤33.2 V during 10/1000 μs transients, preventing latch-up or gate oxide damage in 3.3 V/5 V interface ICs downstream. |
Use Scenario: Safeguarding PLC I/O modules and motor drive control boards powered from 24 V industrial supplies subject to inductive kickback and lightning-induced surges. IC Role / Device Role / Timing Role: Primary rail protector mounted at power entry point, shunting surge current away from DC-DC converters and microcontrollers. Use Value: Absorbs up to 600 W peak pulse energy while maintaining clamped voltage below 33.2 V, preserving downstream component reliability over 10⁵ surge cycles. |
| Telecom Line Card Surge Suppression | Consumer Appliance Motor Control Board |
Use Scenario: Secondary-level protection on 24 V auxiliary rails in telecom base station line cards exposed to induced surges from nearby AC mains or antenna coupling. IC Role / Device Role / Timing Role: Fast-response TVS placed after primary MOV/GDT stages to handle residual fast-rising transients (<1 ns rise time). Use Value: Sub-1 ns response time and low incremental surge resistance ensure effective clamping before sensitive PHY or PMIC components experience overstress. |
Use Scenario: Overvoltage suppression on brushed DC motor driver circuits in washing machines and HVAC blowers, where commutation spikes exceed 100 V. IC Role / Device Role / Timing Role: Unidirectional suppressor connected between motor supply and ground to divert inductive flyback energy. Use Value: Withstands 100 A non-repetitive forward surge (IFSM) and maintains <1.0 μA leakage at 20.5 V, ensuring no standby power penalty or false triggering. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ24A-E3/5B | Same VWM (20.5 V), VC = 38.9 V at 15.4 A; lower PPPM (400 W); SMA package (higher RθJA ≈ 140 °C/W). | Less effective clamping margin and lower surge capacity; suitable only for lower-energy transients. | Select when cost sensitivity outweighs clamping performance, and thermal budget allows higher junction temperature rise. |
| 1.5SMC24A | Same VWM/VC specs but SMC package (DO-214AB); RθJA ≈ 60 °C/W; higher mounting pad requirement (0.375" × 0.375"). | Better thermal performance but larger footprint; not drop-in compatible with SMB land pattern. | Choose when board space permits larger package and improved thermal management is required for high-duty-cycle surge environments. |
Compared with SMAJ24A-E3/5B, P6SMB24AHM3_A/H delivers 50% higher peak pulse power and tighter clamping; versus 1.5SMC24A, it offers identical electrical performance in a 30% smaller footprint but requires careful thermal design due to higher RθJA.
Availability
P6SMB24AHM3_A/H is available at Aetrix Electronics and suitable for automotive ECU designs, industrial 24 V power systems, and telecom line card protection requiring stable component supply, AEC-Q101 compliance, and consistent SMB (DO-214AA) form factor.
Supply support for P6SMB24AHM3_A/H 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
Vishay General Semiconductor is a global leader in discrete semiconductors, specializing in diodes, rectifiers, MOSFETs, and passive components with emphasis on reliability, efficiency, and application-specific optimization.
The P6SMB Series targets high-reliability transient suppression in automotive, industrial, and telecom infrastructure, combining AEC-Q101 qualification, 600 W surge capability, and compact SMB packaging for automated manufacturing.
FAQ
What is the maximum clamping voltage of the P6SMB24AHM3_A/H under rated surge conditions?
The P6SMB24AHM3_A/H has a maximum clamping voltage (VC) of 33.2 V at 18.1 A peak pulse current (IPPM), measured with a 10/1000 μs waveform. This value is guaranteed per the Vishay datasheet revision 09-Jan-2024 and defines the upper voltage limit imposed on protected circuitry during standardized surge events. The P6SMB24AHM3_A/H maintains this clamping performance across its full operating temperature range (-65 °C to +150 °C) when mounted per recommended pad layout.
Is the P6SMB24AHM3_A/H suitable for automotive applications?
Yes, the P6SMB24AHM3_A/H is AEC-Q101 qualified, as confirmed by its HM3 suffix and documentation in Vishay's P6SMB series datasheet. It undergoes rigorous stress testing including temperature cycling, high-temperature reverse bias, and mechanical shock - making it appropriate for under-hood and cabin-mounted automotive electronics such as body control modules, sensor interfaces, and infotainment power supplies. The P6SMB24AHM3_A/H also meets J-STD-020 MSL Level 1 for lead-free reflow compatibility.
What does the "HM3" suffix indicate in P6SMB24AHM3_A/H?
The "HM3" suffix in P6SMB24AHM3_A/H denotes halogen-free, RoHS-compliant construction with AEC-Q101 qualification. It distinguishes this variant from commercial-grade versions (e.g., E3 or M3) and confirms compliance with automotive reliability standards. The "_A/H" further specifies packaging: "A" indicates tape-and-reel format per EIA-481, and "H" denotes 7-inch diameter reel with 750-unit quantity. The P6SMB24AHM3_A/H thus combines environmental compliance, automotive qualification, and standardized logistics packaging.
How does the P6SMB24AHM3_A/H compare to bidirectional TVS diodes in surge protection?
The P6SMB24AHM3_A/H is unidirectional and functions only during reverse-voltage transients - ideal for DC power rails referenced to ground. Unlike bidirectional variants (e.g., P6SMB24CA), it blocks forward current up to 100 A IFSM but does not suppress positive-going transients on AC-coupled lines. Its lower leakage (<1.0 μA at VWM) and sharper breakdown knee improve noise immunity in precision analog circuits. For the P6SMB24AHM3_A/H, polarity must be observed during placement: cathode toward the protected voltage rail.
What is the thermal resistance and recommended PCB layout for the P6SMB24AHM3_A/H?
The P6SMB24AHM3_A/H has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal, as specified in the Vishay datasheet. To achieve this rating, the PCB must use minimum recommended pad dimensions (0.086" × 0.060") and avoid excessive solder mask coverage on thermal pads. The P6SMB24AHM3_A/H relies on copper area for heat dissipation during repetitive surges; inadequate layout increases junction temperature and reduces surge endurance.
P6SMB24AHM3_A/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- P6SMB, TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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):
- 18.1A
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
P6SMB24AHM3_A/H FAQ
1.How can I place an order for P6SMB24AHM3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB24AHM3_A/H 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 P6SMB24AHM3_A/H reliable?
The price and inventory of P6SMB24AHM3_A/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB24AHM3_A/H is usually 5 days.
3.What payment methods are accepted for P6SMB24AHM3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB24AHM3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB24AHM3_A/H?
P6SMB24AHM3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB24AHM3_A/H 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 P6SMB24AHM3_A/H?
For technical support, including P6SMB24AHM3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB24AHM3_A/H requirements.
6.How does Aetrix verify that P6SMB24AHM3_A/H is sourced from the original manufacturer or authorized distributors?
All P6SMB24AHM3_A/H 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 P6SMB24AHM3_A/H meets industry standards.
7.What is the process for return or replacement of P6SMB24AHM3_A/H?
All P6SMB24AHM3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB24AHM3_A/H, 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 P6SMB24AHM3_A/H part is unused and in its original packaging.
Return procedure for P6SMB24AHM3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB24AHM3_A/H Tags
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