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Vishay General Semiconductor - Diodes Division SMB10J24AHM3_A/I
- Part No.:
- SMB10J24AHM3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMB10J24AHM3_A/I.pdf
- Description:
- TVS DIODE 24VWM 38.9VC DO214AA
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
SMB10J24AHM3_A/I from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, designed for high-energy surge protection with 1000 W peak pulse power (10/1000 μs), 24 V stand-off voltage (VWM), and 38.9 V maximum clamping voltage (VC) at 25.7 A peak pulse current. It is AEC-Q101 qualified and used to protect automotive sensor signal lines, MOSFET gates, and microcontroller I/O against inductive switching transients.
For engineers reviewing the SMB10J24AHM3_A/I datasheet, SMB10J24AHM3_A/I pinout, SMB10J24AHM3_A/I application, or SMB10J24AHM3_A/I equivalent, key selection criteria include clamping performance under 10/1000 μs surge, AEC-Q101 qualification status, unidirectional polarity, thermal resistance (RθJA = 72 °C/W), and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
This TVS diode operates as a voltage-clamping protection device that enters avalanche breakdown when reverse voltage exceeds its 26.7–29.5 V breakdown range (VBR at 1 mA), limiting transient energy to downstream circuitry. Its glass-passivated junction ensures stable leakage (<1.0 μA at 24 V) and fast response time (<1 ns), critical for safeguarding sensitive IC inputs.
The SMB10J24AHM3_A/I is rated for -55 °C to +150 °C operating junction temperature and features low incremental surge resistance, enabling robust handling of repetitive 100 A surge currents (IFSM, 8.3 ms half-sine). Its halogen-free, RoHS-compliant matte tin-plated leads meet J-STD-002 solderability and JESD201 Class 2 whisker resistance requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 24 V - Maximum continuous reverse working voltage before clamping begins; defines safe operating margin for 24 V rail protection. |
| VBR min/max | 26.7 V / 29.5 V - Breakdown voltage range at 1 mA test current; ensures reliable turn-on above system nominal voltage. |
| VC @ IPPM | 38.9 V - Clamping voltage at 25.7 A peak pulse current; determines maximum stress imposed on protected IC during surge. |
| PPPM | 1000 W - Peak pulse power rating (10/1000 μs waveform); quantifies single-event surge energy absorption capability. |
| RθJA | 72 °C/W - Junction-to-ambient thermal resistance; informs PCB pad design (0.2" × 0.2" copper per terminal) for thermal derating above 25 °C. |
| IFSM | 100 A - Non-repetitive forward surge current (8.3 ms half-sine); supports protection during high-current inductive kick events. |
| AEC-Q101 | Qualified - Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per AEC standard. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, low-profile case with cathode band marking. Dimensions: 4.57 mm × 3.94 mm × 2.20 mm (L × W × H), 0.220" × 0.155" × 0.086". Mounting requires 5.0 mm × 5.0 mm copper pads per terminal per datasheet fig. 2.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / Surge return path | Connected to ground or low-impedance return node; carries full surge current during clamping. |
| Cathode | Protected line connection | Connected to the line being protected (e.g., sensor output, MCU input); color band identifies this terminal. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive applications including engine control units, ADAS sensors, and body electronics requiring long-term reliability under thermal and mechanical stress. |
| Halogen-free & RoHS-compliant | Meets environmental compliance mandates for Tier-1 automotive supply chains and industrial equipment sold in EU/China markets. |
| Glass-passivated junction | Ensures stable electrical parameters over lifetime and immunity to moisture-induced degradation in humid environments. |
| MSL Level 1 (260 °C) | Supports lead-free reflow without preconditioning; compatible with standard SMT assembly processes up to JEDEC J-STD-020 peak temperature. |
| Low clamping ratio (VC/VWM = 1.62) | Minimizes overvoltage exposure to protected ICs-critical for 3.3 V or 5 V logic interfacing with 24 V systems. |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting analog output lines of pressure or temperature sensors in engine bay modules exposed to load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Voltage-clamping TVS placed between sensor output and microcontroller ADC input, with cathode tied to signal line and anode grounded. Use Value: Limits transient voltage to ≤38.9 V during 1000 W surges, preventing ADC saturation and latch-up in 5 V-tolerant microcontrollers. | Use Scenario: Shielding digital input channels of programmable logic controllers from relay coil flyback and motor drive noise in factory automation cabinets. IC Role / Device Role / Timing Role: Unidirectional TVS installed at field-side connector interface, shunting induced spikes before they reach optocoupler input stage. Use Value: Withstands 100 A surge current (IFSM), ensuring survivability across thousands of relay switching cycles without parameter drift. |
| Automotive Body Control Module | DC-DC Converter Input Protection |
Use Scenario: Safeguarding LIN bus transceiver pins and microcontroller GPIOs in door module ECUs subjected to battery reverse polarity and jump-start transients. IC Role / Device Role / Timing Role: TVS diode mounted directly at connector entry point, cathode to LIN line, anode to chassis ground. Use Value: AEC-Q101 qualification guarantees operation from -40 °C to +125 °C ambient, matching under-hood thermal profiles. | Use Scenario: Suppressing voltage spikes on 24 V input rails of isolated DC-DC converters powering safety-critical subsystems. IC Role / Device Role / Timing Role: Primary clamping device upstream of input filter capacitor, absorbing energy before it stresses MOSFETs or controller ICs. Use Value: 72 °C/W thermal resistance enables effective heat dissipation into PCB copper, avoiding thermal runaway during repeated surge events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ24AHE3_A/H | Same VWM (24 V), identical SMB package, but rated for 600 W PPPM (vs. 1000 W) and lower IPPM (16.7 A). | Not suitable for high-energy transients like ISO 16750-2 pulse 5a; limited to lower-power signal-line protection. | Select only if system-level surge testing confirms <600 W requirement and cost sensitivity outweighs headroom needs. |
| 1.5SMC24A | Same VWM and VC, but in larger SMC (DO-214AB) package with higher RθJA (50 °C/W), 1500 W PPPM, and non-AEC-Q101 qualification. | Lacks automotive qualification; requires larger PCB footprint and different thermal layout. | Use where automotive qualification is unnecessary and higher surge margin justifies added board space and sourcing complexity. |
Compared with SMBJ24AHE3_A/H and 1.5SMC24A, the SMB10J24AHM3_A/I delivers optimal balance of AEC-Q101 compliance, 1000 W surge capacity, and compact SMB footprint-making it preferred for space-constrained, thermally demanding automotive and industrial control applications.
Availability
SMB10J24AHM3_A/I is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, and body control unit designs requiring stable component supply, AEC-Q101 validation, and high-energy transient immunity.
Supply support for SMB10J24AHM3_A/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, TVS devices, and power MOSFETs with emphasis on reliability, efficiency, and application-specific optimization.
The SMB10JxxA series is part of Vishay's TRANSZORB® TVS platform, engineered specifically for high-power-density, automotive-grade transient suppression in harsh electromagnetic environments.
FAQ
What is the clamping voltage of SMB10J24AHM3_A/I at its rated peak pulse current?
The SMB10J24AHM3_A/I has a maximum clamping voltage (VC) of 38.9 V at its specified peak pulse current (IPPM) of 25.7 A under a 10/1000 μs waveform. This value is measured per ANSI/IEEE C62.35 standards and defines the upper voltage limit imposed on protected circuitry during surge events. The SMB10J24AHM3_A/I maintains this clamping performance across its qualified operating temperature range.
Is SMB10J24AHM3_A/I suitable for automotive applications?
Yes, SMB10J24AHM3_A/I is AEC-Q101 qualified and explicitly designated for automotive use with suffix "HM3" indicating halogen-free, RoHS-compliant, and AEC-Q101 validated construction. It meets requirements for engine control, body electronics, and ADAS sensor modules, including thermal cycling, humidity testing, and surge immunity per ISO 7637-2 and ISO 16750-2 standards. The SMB10J24AHM3_A/I data sheet confirms qualification status in the Mechanical Data section.
What does the "_A/I" suffix mean in SMB10J24AHM3_A/I?
The "_A/I" suffix in SMB10J24AHM3_A/I indicates packaging configuration: "A" denotes the revision code (per Vishay's document 88422), and "I" specifies 13-inch diameter plastic tape and reel delivery mode with 3200 units per reel. This matches the ordering information table in the datasheet, where "HM3_B/I" corresponds to halogen-free, AEC-Q101 qualified parts in 13″ reels. The SMB10J24AHM3_A/I is supplied in this format for high-volume SMT assembly.
How does SMB10J24AHM3_A/I differ from bidirectional variants like SMB8J24CA?
The SMB10J24AHM3_A/I is unidirectional, intended for DC circuits where polarity is fixed (e.g., 24 V supply lines), while SMB8J24CA is bidirectional and suited for AC or dual-polarity signal lines. Key differences include higher PPPM (1000 W vs. 800 W), higher IPPM (25.7 A vs. 20.6 A), and inclusion of AEC-Q101 qualification-features not guaranteed for the SMB8J24CA variant. The SMB10J24AHM3_A/I also uses a different base P/N structure reflecting its unidirectional design and automotive grade.
What is the thermal resistance and recommended PCB layout for SMB10J24AHM3_A/I?
The SMB10J24AHM3_A/I has a typical junction-to-ambient thermal resistance (RθJA) of 72 °C/W when mounted on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal, as defined in Figure 2 of the datasheet. To maintain rated surge performance, designers must implement these minimum pad dimensions and ensure adequate copper area for heat spreading. The SMB10J24AHM3_A/I thermal performance degrades significantly if smaller pads or insufficient internal layers are used.
SMB10J24AHM3_A/I Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 24V
- Voltage - Breakdown (Min):
- 26.7V
- Voltage - Clamping (Max) @ Ipp:
- 38.9V
- Current - Peak Pulse (10/1000µs):
- 25.7A
- Power - Peak Pulse:
- 1000W (1kW)
- Power Line Protection:
- No
- Applications:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
SMB10J24AHM3_A/I FAQ
1.How can I place an order for SMB10J24AHM3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMB10J24AHM3_A/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 SMB10J24AHM3_A/I reliable?
The price and inventory of SMB10J24AHM3_A/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMB10J24AHM3_A/I is usually 5 days.
3.What payment methods are accepted for SMB10J24AHM3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMB10J24AHM3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMB10J24AHM3_A/I?
SMB10J24AHM3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMB10J24AHM3_A/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 SMB10J24AHM3_A/I?
For technical support, including SMB10J24AHM3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMB10J24AHM3_A/I requirements.
6.How does Aetrix verify that SMB10J24AHM3_A/I is sourced from the original manufacturer or authorized distributors?
All SMB10J24AHM3_A/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 SMB10J24AHM3_A/I meets industry standards.
7.What is the process for return or replacement of SMB10J24AHM3_A/I?
All SMB10J24AHM3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with SMB10J24AHM3_A/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 SMB10J24AHM3_A/I part is unused and in its original packaging.
Return procedure for SMB10J24AHM3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMB10J24AHM3_A/I Tags
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