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Vishay General Semiconductor - Diodes Division P6SMB24AHM3_B/I
- Part No.:
- P6SMB24AHM3_B/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB24AHM3_B/I.pdf
- Description:
- 600W,24V 5%,UNIDIR,SMB TVS
- Quantity:
- Payment:
- Shipping:
Inventory:6,444
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Product details
Overview
P6SMB24AHM3_B/I from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in the P6SMB series, designed for clamping voltage transients on power and signal lines. It features a 24 V standoff voltage (VWM), 33.2 V maximum clamping voltage at 18.1 A peak pulse current, and 600 W peak pulse power capability with a 10/1000 μs waveform - deployed in automotive-grade ECU protection, industrial sensor interfaces, and DC power rail surge suppression.
For engineers reviewing the P6SMB24AHM3_B/I datasheet, P6SMB24AHM3_B/I pinout, P6SMB24AHM3_B/I application, or P6SMB24AHM3_B/I equivalent, key selection criteria include its AEC-Q101 qualification, SMB (DO-214AA) package compatibility, unidirectional polarity with cathode band marking, and thermal resistance (RθJA = 100 °C/W) under standard PCB pad layout conditions.
Technical Context
This TVS diode operates as a clamping device in reverse-biased configuration, triggering when transient voltage exceeds its breakdown threshold (VBR = 22.8–25.2 V at 1 mA). Its glass-passivated junction ensures stable avalanche behavior and low incremental surge resistance, enabling fast response (<1 ns) to ESD and lightning-induced surges.
Designed for automated SMT assembly, it meets J-STD-020 MSL Level 1 (peak reflow ≤260 °C) and JESD201 Class 2 whisker resistance. The halogen-free, RoHS-compliant HM3 suffix confirms compliance with automotive reliability standards including AEC-Q101 qualification per ordering code suffix _B/I.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 20.5 V - Maximum continuous reverse operating voltage before clamping begins; defines safe DC operating margin. |
| VBR (Breakdown Voltage) | 22.8–25.2 V at 1 mA - Verified avalanche initiation range; ensures predictable turn-on during transients. |
| VC (Clamping Voltage) | 33.2 V at IPPM = 18.1 A - Peak voltage seen by protected circuit during 10/1000 μs surge; critical for IC survival. |
| PPPM (Peak Pulse Power) | 600 W - Sustained energy absorption capability under standardized 10/1000 μs waveform; enables robust surge handling. |
| IPPM (Peak Pulse Current) | 18.1 A - Maximum non-repetitive surge current the device can safely divert without degradation. |
| TJmax | 150 °C - Maximum junction temperature rating; supports operation in under-hood automotive environments. |
| RθJA | 100 °C/W - Thermal resistance junction-to-ambient on standard 0.2" × 0.2" copper pads; informs thermal design margin. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, low-profile plastic case with matte tin-plated leads solderable per J-STD-002 and JESD22-B102. Cathode indicated by molded band on body end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential side of protected line; forms reverse-biased path with cathode during surge. |
| Cathode | Reverse-biased clamping terminal | Marked with band; connected to higher-potential side (e.g., VCC rail); conducts avalanche current during overvoltage events. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control units and ADAS sensor interfaces per HM3_B/I suffix. |
| 600 W peak pulse power | Handles high-energy transients (e.g., ISO 7637-2 Pulse 1/2a/5a) without failure on properly laid-out PCBs. |
| Low clamping ratio (VC/VBR ≈ 1.32) | Minimizes overvoltage stress on downstream ICs compared to higher-ratio suppressors. |
| MSL Level 1 moisture sensitivity | Enables direct placement into reflow ovens without baking; reduces manufacturing overhead. |
| Halogen-free & RoHS-compliant | Fulfills environmental compliance requirements for global automotive and industrial OEMs. |
Applications
| Automotive Engine Control Unit (ECU) Protection | Industrial Sensor Signal Line Protection |
|---|---|
|
Use Scenario: Suppresses load-dump and inductive switching transients on 12 V battery-fed microcontroller power rails in engine management systems. IC Role / Device Role / Timing Role: Unidirectional TVS placed between VBAT and GND, clamping spikes within 1 ns to protect MCU LDOs and CAN transceivers. Use Value: Enables reliable operation under ISO 16750-2 load-dump (up to 35 V, 400 ms) and ISO 7637-2 Pulse 5a (75 V, 100 ms) stress conditions. |
Use Scenario: Shields analog output lines (e.g., 4–20 mA current loop) of pressure/temperature sensors from ESD and cable discharge events. IC Role / Device Role / Timing Role: Mounted across signal and return paths near connector entry point to shunt transients before reaching ADC input stage. Use Value: Limits induced voltage to ≤33.2 V during ±8 kV contact ESD (IEC 61000-4-2), preventing ADC saturation and data corruption. |
| DC Power Rail Surge Suppression | Telecom Interface Port Protection |
|
Use Scenario: Protects 24 V DC input stages of programmable logic controllers (PLCs) against lightning-induced surges entering via field wiring. IC Role / Device Role / Timing Role: Placed upstream of input filter capacitors to clamp fast-rising transients before bulk capacitance absorbs energy. Use Value: Absorbs 600 W peak power per 10/1000 μs waveform (per IEC 61000-4-5), maintaining system uptime in outdoor industrial installations. |
Use Scenario: Guards RS-485 transceiver lines in base station backhaul equipment exposed to induced surges from nearby lightning strikes. IC Role / Device Role / Timing Role: Connected between differential pair (A/B) and ground to clamp common-mode transients while preserving signal integrity. Use Value: Provides bidirectional clamping capability when paired with complementary device (e.g., P6SMB24CAHM3_B/I), meeting GR-1089-CORE Level 3 surge immunity. |
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), but lower PPPM (400 W); SMA package (smaller footprint, higher RθJA). | Limited to lower-energy transients; unsuitable for automotive load-dump or industrial lightning surge. | Select only if space-constrained and surge energy is <400 W; verify thermal derating on reduced copper area. |
| 1.5SMC24A | Same electrical specs but in larger SMC (DO-214AB) package; RθJA = 65 °C/W; no AEC-Q101 qualification. | Higher thermal performance but lacks automotive qualification; requires additional reliability validation for vehicle use. | Prefer for cost-sensitive industrial designs where AEC-Q101 is not mandated and board space allows SMC footprint. |
Compared with SMAJ24A-E3/5B and 1.5SMC24A, P6SMB24AHM3_B/I uniquely combines AEC-Q101 qualification, 600 W surge capacity, and SMB footprint - making it the optimal choice for space-limited automotive and industrial modules requiring certified reliability and high-energy clamping.
Availability
P6SMB24AHM3_B/I is available at Aetrix Electronics and suitable for automotive ECU protection, industrial sensor interface hardening, and telecom port surge suppression requiring stable component supply across extended production lifecycles.
Supply support for P6SMB24AHM3_B/I 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 protection devices with emphasis on reliability, efficiency, and application-specific optimization.
The P6SMB series targets high-reliability transient suppression in automotive, industrial, and telecom systems - engineered for robust clamping performance, AEC-Q101 compliance, and seamless SMT integration.
FAQ
What is the clamping voltage of P6SMB24AHM3_B/I at its rated peak pulse current?
The P6SMB24AHM3_B/I has a maximum clamping voltage (VC) of 33.2 V at its specified peak pulse current (IPPM) of 18.1 A under a 10/1000 μs waveform. This value is measured per JEDEC standards and reflects the highest voltage the protected circuit will experience during a full-rated surge event. The P6SMB24AHM3_B/I maintains this clamping performance across its qualified operating temperature range of -65 °C to +150 °C.
Is P6SMB24AHM3_B/I qualified for automotive applications?
Yes, P6SMB24AHM3_B/I is AEC-Q101 qualified, as confirmed by the HM3_B/I ordering suffix. This qualification covers stress tests including high-temperature operating life, temperature cycling, and ESD robustness - specifically validating its use in automotive subsystems such as engine control units, body electronics, and ADAS sensor modules. The P6SMB24AHM3_B/I meets all requirements defined in the AEC-Q101 Rev H standard.
What does the "HM3_B/I" suffix indicate in P6SMB24AHM3_B/I?
The "HM3" denotes halogen-free, RoHS-compliant construction with JESD201 Class 2 whisker resistance; "_B" specifies AEC-Q101 qualification for voltage ratings up to 220 V; "/I" indicates packaging in 13-inch tape-and-reel format with 3200 units per reel. Together, P6SMB24AHM3_B/I identifies a fully automotive-qualified, environmentally compliant, and production-ready variant of the P6SMB24A TVS diode.
Can P6SMB24AHM3_B/I be used in bidirectional configurations?
No, P6SMB24AHM3_B/I is a unidirectional TVS diode, as indicated by the "A" suffix (not "CA") and cathode band marking. For bidirectional protection, Vishay offers the P6SMB24CAHM3_B/I variant. Using P6SMB24AHM3_B/I in reverse-biased AC or floating-signal applications risks forward conduction and failure; always match polarity and directionality to circuit topology.
What is the thermal resistance of P6SMB24AHM3_B/I under standard mounting conditions?
The P6SMB24AHM3_B/I exhibits 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, per Vishay Document 88370. This value assumes still air and standard FR-4 PCB construction. Derating curves in Figure 2 of the datasheet must be applied for operation above 25 °C ambient or with reduced copper area.
P6SMB24AHM3_B/I 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:
- 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/I FAQ
1.How can I place an order for P6SMB24AHM3_B/I through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB24AHM3_B/I 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/I reliable?
The price and inventory of P6SMB24AHM3_B/I 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/I is usually 5 days.
3.What payment methods are accepted for P6SMB24AHM3_B/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB24AHM3_B/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB24AHM3_B/I?
P6SMB24AHM3_B/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB24AHM3_B/I 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/I?
For technical support, including P6SMB24AHM3_B/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB24AHM3_B/I requirements.
6.How does Aetrix verify that P6SMB24AHM3_B/I is sourced from the original manufacturer or authorized distributors?
All P6SMB24AHM3_B/I 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/I meets industry standards.
7.What is the process for return or replacement of P6SMB24AHM3_B/I?
All P6SMB24AHM3_B/I units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB24AHM3_B/I, 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/I part is unused and in its original packaging.
Return procedure for P6SMB24AHM3_B/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB24AHM3_B/I Tags
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