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Vishay General Semiconductor - Diodes Division SMB10J24AHM3/I
- Part No.:
- SMB10J24AHM3/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMB10J24AHM3/I.pdf
- Description:
- TVS DIODE 24VWM 38.9VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:7,208
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Product details
Overview
SMB10J24AHM3/I from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, designed for high-energy surge protection on DC power rails and signal lines. It features 24 V stand-off voltage (VWM), 26.7–29.5 V breakdown voltage (VBR), 38.9 V clamping voltage (VC) at 25.7 A peak pulse current (IPPM), and 1000 W peak pulse power (PPPM) with 10/1000 µs waveform - deployed in automotive sensor interfaces and industrial power supply inputs.
For engineers reviewing the SMB10J24AHM3/I datasheet, SMB10J24AHM3/I pinout, SMB10J24AHM3/I application, or SMB10J24AHM3/I equivalent, this device is selected for AEC-Q101-qualified 24 V system protection where low clamping ratio, fast response (<1 ns), and MSL Level 1 reflow compatibility are critical design requirements.
Technical Context
This TVS operates as a voltage-clamped shunt protector: under normal bias it presents <1 µA leakage at 24 V (VWM), then rapidly avalanches when transients exceed VBR (26.7–29.5 V @ 1 mA), limiting downstream voltage to ≤38.9 V at 25.7 A. Its glass-passivated junction ensures stable breakdown and low incremental surge resistance.
Designed for surface-mount automation, the SMB10J24AHM3/I meets J-STD-020 MSL Level 1 (260 °C peak), supports 100 A non-repetitive forward surge (IFSM), and maintains operation from –55 °C to +150 °C junction temperature - enabling use in engine control units and under-hood electronics.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 24 V - maximum continuous reverse operating voltage before clamping begins; defines safe DC rail margin for 24 V systems. |
| VBR min/max | 26.7 V / 29.5 V @ 1 mA - guaranteed avalanche initiation range; ensures consistent turn-on across production lots. |
| VC @ IPPM | 38.9 V @ 25.7 A - clamped voltage during 10/1000 µs surge; limits stress on protected ICs like CAN transceivers or microcontrollers. |
| PPPM | 1000 W - peak pulse power handling per 10/1000 µs waveform; supports IEC 61000-4-5 Level 4 (4 kV) surge immunity. |
| IFSM | 100 A - single half-sine surge rating (8.3 ms); withstands load-dump events in automotive 24 V battery systems. |
| TJ max | +150 °C - maximum junction temperature; enables placement near heat sources in power modules and motor drives. |
| Polarity | Unidirectional - cathode-banded; blocks reverse conduction while clamping positive transients only. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, halogen-free, RoHS-compliant, with matte tin-plated leads solderable per J-STD-002. Dimensions: 4.57 mm × 3.94 mm × 2.20 mm (L × W × H); polarity indicated by cathode band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference terminal | Connected to ground or low-potential node; completes clamping path during overvoltage events. |
| Cathode | High-side surge input terminal | Connected to protected line (e.g., 24 V rail or sensor output); avalanche conduction occurs from cathode to anode. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including powertrain and body electronics per stress test requirements. |
| MSL Level 1 | Compatible with standard SMT reflow profiles up to 260 °C peak, eliminating moisture sensitivity handling. |
| Glass passivated junction | Ensures stable VBR tolerance, low leakage drift over temperature, and long-term reliability in harsh environments. |
| Low clamping ratio (VC/VBR ≈ 1.38) | Minimizes voltage overshoot during surge, reducing risk of latch-up or damage to downstream 3.3 V/5 V logic. |
| Halogen-free & RoHS-compliant (HM3 suffix) | Fulfills environmental compliance for global automotive OEMs and industrial equipment certifications. |
Applications
| Automotive Sensor Interface | Industrial 24 V Power Input |
|---|---|
Use Scenario: Protecting LIN/CAN transceiver inputs and analog sensor outputs (e.g., pressure, temperature) in engine control modules against load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Shunt-type transient clamp placed between signal line and chassis ground, responding within <1 ns to limit voltage excursion. Use Value: Maintains signal integrity under 100 V/100 ms load dump surges while preserving <1 µA leakage at 24 V nominal rail. |
Use Scenario: Safeguarding 24 V DC input stages of PLC I/O modules, motor drivers, and HMIs against switching transients and EFT bursts. IC Role / Device Role / Timing Role: Primary front-end surge limiter on bulk power entry, coordinated with upstream fuses and downstream LC filters. Use Value: Absorbs 1000 W peak energy without degradation, enabling compliance with IEC 61000-4-4/5 Level 4 immunity requirements. |
| Telecom Power Supply Protection | Consumer Appliance Control Board |
Use Scenario: Clamping induced surges on 24 V auxiliary supplies feeding base station RF amplifiers and backhaul interface ICs. IC Role / Device Role / Timing Role: Fast-acting voltage clamp on secondary-side DC distribution net, placed adjacent to point-of-load regulators. Use Value: Limits transient voltage to ≤38.9 V during 25.7 A surges, preventing regulator shutdown or MOSFET gate oxide failure. |
Use Scenario: Protecting microcontroller GPIOs and relay driver circuits in smart HVAC controllers exposed to relay coil flyback and ESD events. IC Role / Device Role / Timing Role: Localized TVS on board-level 24 V control bus, mounted within 2 mm of protected IC pins. Use Value: Provides sub-1 ns response and <1 µA leakage at 24 V, ensuring no impact on sleep-mode current or signal accuracy. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMB10J24AHE3/I | Same electrical specs, but RoHS-compliant commercial-grade (not AEC-Q101 qualified); uses standard tin plating without halogen-free certification. | Approved for industrial/commercial use only; not validated for automotive temperature cycling or humidity testing. | Select when AEC-Q101 qualification is unnecessary and cost optimization is prioritized over automotive compliance. |
| SMAJ24A | Lower PPPM (400 W), smaller SMA package (DO-214AC), higher VC (43.0 V @ 9.9 A), same VWM/VBR range. | Limited to lower-energy transients; unsuitable for IEC 61000-4-5 Level 4 or automotive load dump. | Choose only for space-constrained consumer designs with ≤400 W surge exposure and no automotive qualification needs. |
Compared with SMB10J24AHE3/I and SMAJ24A, the SMB10J24AHM3/I uniquely combines AEC-Q101 qualification, 1000 W surge capacity, halogen-free construction, and SMB footprint - making it the sole option for automotive-grade 24 V rail protection requiring full compliance and high-energy robustness.
Availability
SMB10J24AHM3/I is available at Aetrix Electronics and suitable for automotive electronics, industrial power supplies, and telecom infrastructure requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for SMB10J24AHM3/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, power density, and automotive qualification.
The SMB10J series targets high-energy transient suppression in demanding environments, with design focus on AEC-Q101 compliance, low clamping ratio, and automated assembly compatibility for automotive and industrial power systems.
FAQ
What is the clamping voltage of SMB10J24AHM3/I at its rated peak pulse current?
The SMB10J24AHM3/I has a maximum clamping voltage (VC) of 38.9 V at 25.7 A peak pulse current (IPPM) under 10/1000 µs waveform conditions. This value is measured per ANSI/IEEE C62.35 standards and guarantees voltage limitation during standardized surge events - critical for protecting downstream 3.3 V or 5 V logic powered from a 24 V rail. The SMB10J24AHM3/I maintains this performance across its full operating temperature range.
Is SMB10J24AHM3/I qualified for automotive applications?
Yes, SMB10J24AHM3/I is AEC-Q101 qualified, as confirmed by Vishay's documentation (Document Number: 88422, Revision: 09-Jan-2024). The "HM3" suffix denotes halogen-free, RoHS-compliant, and AEC-Q101-qualified construction. It undergoes stress testing for temperature cycling, humidity, and mechanical shock - making SMB10J24AHM3/I suitable for engine control units, ADAS sensors, and body electronics where automotive reliability is mandatory.
What does the "HM3" suffix mean in SMB10J24AHM3/I?
The "HM3" suffix in SMB10J24AHM3/I indicates halogen-free, RoHS-compliant, and AEC-Q101-qualified construction. It distinguishes this variant from commercial-grade "E3" or "M3" versions and confirms compliance with automotive environmental and reliability standards. The "I" denotes 13-inch tape-and-reel packaging (3200 units/reel), while the "H" refers to the internal revision code. SMB10J24AHM3/I is fully compatible with standard SMT reflow profiles up to 260 °C.
How does SMB10J24AHM3/I compare to bidirectional TVS diodes with the same VWM?
SMB10J24AHM3/I is unidirectional and optimized for DC rail protection where only positive transients occur - offering higher PPPM (1000 W vs. 800 W for SMB8J24CA) and lower clamping voltage (38.9 V vs. 38.9 V at lower IPPM). Unlike bidirectional variants, SMB10J24AHM3/I blocks reverse current, eliminating leakage paths in polarized circuits. For 24 V systems with defined polarity, SMB10J24AHM3/I delivers superior energy handling without compromising circuit behavior.
What is the thermal resistance of SMB10J24AHM3/I, and how does it affect layout?
The SMB10J24AHM3/I has a typical junction-to-ambient thermal resistance (RθJA) of 72 °C/W and junction-to-lead (RθJL) of 20 °C/W. To maintain safe operation under repeated surges, PCB layout must use minimum 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal, as specified in Vishay's datasheet. Insufficient copper area raises junction temperature, derating peak power capability - a key consideration when designing for sustained surge duty cycles in SMB10J24AHM3/I applications.
SMB10J24AHM3/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:
- Discontinued at Digi-Key
- 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/I FAQ
1.How can I place an order for SMB10J24AHM3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMB10J24AHM3/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/I reliable?
The price and inventory of SMB10J24AHM3/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/I is usually 5 days.
3.What payment methods are accepted for SMB10J24AHM3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMB10J24AHM3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMB10J24AHM3/I?
SMB10J24AHM3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMB10J24AHM3/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/I?
For technical support, including SMB10J24AHM3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMB10J24AHM3/I requirements.
6.How does Aetrix verify that SMB10J24AHM3/I is sourced from the original manufacturer or authorized distributors?
All SMB10J24AHM3/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/I meets industry standards.
7.What is the process for return or replacement of SMB10J24AHM3/I?
All SMB10J24AHM3/I units undergo pre-shipment inspection (PSI). If there is an issue with SMB10J24AHM3/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/I part is unused and in its original packaging.
Return procedure for SMB10J24AHM3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMB10J24AHM3/I Tags
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