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Vishay General Semiconductor - Diodes Division P6SMB24AHM3_B/H
- Part No.:
- P6SMB24AHM3_B/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB24AHM3_B/H.pdf
- Description:
- 600W,24V 5%,UNIDIR,SMB TVS
- Quantity:
- Payment:
- Shipping:
Inventory:9,825
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Product details
Overview
P6SMB24AHM3_B/H from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMB (DO-214AA) package, rated for 24 V standoff voltage (VWM = 20.5 V), 33.2 V clamping voltage at 18.1 A peak pulse current (IPPM), and 600 W peak pulse power with 10/1000 μs waveform - designed to protect MOSFETs, ICs, and sensor signal lines against inductive switching transients and ESD in automotive and industrial power rails.
For engineers reviewing the P6SMB24AHM3_B/H datasheet, P6SMB24AHM3_B/H pinout, P6SMB24AHM3_B/H application, or P6SMB24AHM3_B/H equivalent, key selection criteria include its AEC-Q101 qualification, halogen-free RoHS-compliant construction (HM3 suffix), low incremental surge resistance, and verified clamping performance under repetitive 0.01% duty cycle surges - critical for robust overvoltage protection in 24 V automotive subsystems and industrial control I/O.
Technical Context
This TVS diode operates as a unidirectional clamping device with cathode-band polarity marking, leveraging a glass-passivated silicon junction for fast response (<1 ns) and stable breakdown behavior. Its thermal resistance (RθJA = 100 °C/W) and junction temperature limit (TJ = 150 °C) are specified with 0.2" × 0.2" copper pads per terminal, enabling reliable surge handling in compact PCB layouts.
The P6SMB24AHM3_B/H delivers precise voltage limiting: breakdown occurs at 22.8–25.2 V (IT = 1 mA), with maximum reverse leakage of 1.0 μA at VWM, and clamps to ≤33.2 V at 18.1 A - ensuring downstream circuitry remains within safe operating limits during transient events such as load dump or ISO 7637-2 Pulse 1/2a.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 20.5 V - Maximum continuous reverse voltage before conduction; defines normal operating rail margin for 24 V systems. |
| VBR (Breakdown) | 22.8–25.2 V at 1 mA - Confirmed avalanche initiation range; ensures predictable turn-on during transients. |
| VC (Clamping) | 33.2 V at 18.1 A - Peak voltage seen by protected circuit during 10/1000 μs surge; determines safe headroom for 3.3 V/5 V logic. |
| PPPM | 600 W - Peak pulse power rating with 10/1000 μs waveform; supports high-energy transients without failure. |
| IPPM | 18.1 A - Maximum non-repetitive surge current; validates protection capability against 500 V/2 Ω ISO 7637-2 Pulse 1. |
| TJ max. | +150 °C - Maximum junction temperature; enables operation in under-hood automotive environments. |
| AEC-Q101 | Qualified - Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per JESD22-A114. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, halogen-free, RoHS-compliant, matte tin-plated leads. Cathode indicated by band; anode is unmarked end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient current sink | Connected to protected line; conducts surge current to ground when VLINE exceeds VWM. |
| Anode (unbanded end) | Reference node | Typically tied to system ground or low-impedance return path; completes clamping loop during overvoltage event. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 μs) | Enables single-device protection against high-energy transients like load dump without external series impedance. |
| AEC-Q101 qualified (HM3_B/H variant) | Validated for automotive electronics including engine control units, body controllers, and ADAS sensor interfaces. |
| Low clamping ratio (VC/VBR ≈ 1.31) | Minimizes overvoltage stress on downstream ICs while maintaining tight voltage regulation during surge. |
| MSL Level 1 (260 °C reflow compatible) | Supports standard lead-free SMT assembly without moisture sensitivity concerns or baking requirements. |
| Glass-passivated junction | Ensures long-term stability of breakdown voltage and leakage current across temperature and lifetime. |
Applications
| Automotive Power Distribution | Industrial Sensor Signal Protection |
|---|---|
Use Scenario: Protecting 24 V supply rails in vehicle body control modules against load dump (ISO 16750-2) and alternator transients. IC Role / Device Role / Timing Role: Unidirectional TVS clamping device placed between battery input and DC-DC converter input stage. Use Value: Limits transient voltage to ≤33.2 V, preventing damage to 40 V-rated buck controllers and preserving system uptime. |
Use Scenario: Shielding analog output lines (e.g., 4–20 mA current loops) of pressure/temperature sensors in factory automation. IC Role / Device Role / Timing Role: Low-capacitance (<100 pF) clamping element installed at connector interface to shunt ESD and cable discharge events. Use Value: Maintains signal integrity with <1.0 μA leakage at 20.5 V, avoiding offset errors in precision measurement circuits. |
| Telecom Power Interface | Consumer Appliance Motor Control |
Use Scenario: Safeguarding PoE-powered Ethernet switch ports against induced lightning surges on data + power lines. IC Role / Device Role / Timing Role: Primary-level TVS on 48 V DC input bus upstream of isolation and regulation stages. Use Value: Absorbs 600 W pulses without degradation, meeting IEC 61000-4-5 Level 4 (4 kV) immunity requirements. |
Use Scenario: Suppressing commutation spikes from brushed DC motors in smart home appliances (e.g., washing machine drive boards). IC Role / Device Role / Timing Role: Fast-response clamp across motor terminals or H-bridge FET drains. Use Value: Prevents gate oxide rupture in 30 V MOSFETs by clamping spikes to 33.2 V within nanoseconds. |
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), lower PPPM (400 W), SMA package (smaller footprint, higher RθJA = 140 °C/W) | Limited to lower-energy transients; unsuitable for automotive load dump or industrial 2 kV surges. | Select only for space-constrained consumer designs where 400 W surge capacity suffices. |
| 1.5SMC24AHE3_A/H | Same VWM and PPPM, but SMC package (DO-214AB); 30% larger footprint, lower RθJA (75 °C/W) | Better thermal performance for high-duty-cycle environments; not AEC-Q101 qualified in HE3_A/H variant. | Choose when board layout allows larger package and automotive qualification is not required. |
Compared with SMAJ24A-E3/5B and 1.5SMC24AHE3_A/H, the P6SMB24AHM3_B/H uniquely combines AEC-Q101 qualification, SMB footprint efficiency, and full 600 W surge capability - making it the preferred choice for production automotive and industrial designs requiring validated reliability and compact placement.
Availability
P6SMB24AHM3_B/H is available at Aetrix Electronics and suitable for automotive body electronics, industrial PLC I/O modules, and telecom power interface designs requiring stable component supply, halogen-free compliance, and AEC-Q101 traceability.
Supply support for P6SMB24AHM3_B/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, and protection devices with emphasis on reliability, efficiency, and application-specific validation.
The P6SMB Series targets high-reliability transient suppression in automotive, industrial, and telecom infrastructure - engineered for consistent clamping performance, low leakage, and compatibility with automated SMT assembly.
FAQ
What is the clamping voltage of P6SMB24AHM3_B/H at its rated peak pulse current?
The P6SMB24AHM3_B/H clamps to a maximum of 33.2 V at its rated peak pulse current of 18.1 A (10/1000 μs waveform). This value is measured under standardized test conditions with 0.2" × 0.2" copper pads per terminal and represents the upper voltage limit imposed on protected circuitry during surge events - a critical parameter for ensuring downstream ICs remain within absolute maximum ratings. The P6SMB24AHM3_B/H maintains this clamping performance across its qualified temperature range (−65 °C to +150 °C).
Is P6SMB24AHM3_B/H qualified for automotive applications?
Yes, P6SMB24AHM3_B/H is AEC-Q101 qualified, as confirmed by its HM3_B/H suffix and documentation in Vishay's P6SMB datasheet (Rev. 09-Jan-2024, Doc. #88370). This qualification covers stress tests including high-temperature reverse bias (HTRB), temperature cycling, and ESD (HBM ≥ 8 kV), validating its suitability for under-hood and chassis-mounted automotive electronics such as body control modules and sensor interfaces. The P6SMB24AHM3_B/H meets these requirements without derating in standard mounting configurations.
What does the "HM3_B/H" suffix indicate for P6SMB24AHM3_B/H?
The "HM3_B/H" suffix in P6SMB24AHM3_B/H denotes three key attributes: "H" indicates halogen-free construction per IEC 61249-2-21; "M3" confirms RoHS-compliance and JESD201 Class 2 whisker resistance; and "B/H" specifies AEC-Q101 qualification plus packaging in 7" plastic tape and reel (H = 7" reel, quantity 750). This distinguishes it from commercial-grade variants (e.g., M3/52) and ensures full compliance for automotive production. The P6SMB24AHM3_B/H is not interchangeable with non-HM3 or non-B-suffix versions in qualified applications.
How does P6SMB24AHM3_B/H compare to bidirectional TVS diodes in the same series?
P6SMB24AHM3_B/H is unidirectional, meaning it conducts only during reverse-biased overvoltage events - ideal for DC power rail protection where polarity is fixed. Bidirectional variants (e.g., P6SMB24CA) provide symmetrical clamping for AC or floating lines but exhibit higher leakage and reduced VBR consistency. The P6SMB24AHM3_B/H offers tighter VBR tolerance (22.8–25.2 V), lower leakage (≤1.0 μA), and optimized clamping for 24 V DC systems - making it the correct choice for automotive battery-supplied circuits where polarity is known and unidirectional protection suffices.
What is the thermal resistance of P6SMB24AHM3_B/H, and how does it affect layout design?
The P6SMB24AHM3_B/H has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on 0.2" × 0.2" copper pads per terminal - a condition explicitly defined in its datasheet. This value directly impacts sustained surge capability: exceeding 5.0 W steady-state dissipation risks thermal runaway. Layout must replicate the specified pad size and ensure minimal trace length to ground; reducing pad area increases RθJA, degrading both power handling and clamping consistency. The P6SMB24AHM3_B/H does not require heatsinking for transient events but relies on proper copper area for thermal stability during repetitive surges.
P6SMB24AHM3_B/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- P6SMB, TransZorb®
- Packaging:
- Bulk
- 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):
- 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_B/H FAQ
1.How can I place an order for P6SMB24AHM3_B/H through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB24AHM3_B/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_B/H reliable?
The price and inventory of P6SMB24AHM3_B/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_B/H is usually 5 days.
3.What payment methods are accepted for P6SMB24AHM3_B/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB24AHM3_B/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB24AHM3_B/H?
P6SMB24AHM3_B/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB24AHM3_B/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_B/H?
For technical support, including P6SMB24AHM3_B/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB24AHM3_B/H requirements.
6.How does Aetrix verify that P6SMB24AHM3_B/H is sourced from the original manufacturer or authorized distributors?
All P6SMB24AHM3_B/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_B/H meets industry standards.
7.What is the process for return or replacement of P6SMB24AHM3_B/H?
All P6SMB24AHM3_B/H units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB24AHM3_B/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_B/H part is unused and in its original packaging.
Return procedure for P6SMB24AHM3_B/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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