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Vishay General Semiconductor - Diodes Division SMBJ15AHM3/H
- Part No.:
- SMBJ15AHM3/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ15AHM3/H.pdf
- Description:
- TVS DIODE 15VWM 24.4VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:9,992
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Product details
Overview
SMBJ15AHM3/H from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMB (DO-214AA) package, designed for clamping voltage transients on power and signal lines. It features a 15 V stand-off voltage (VWM), 24.4 V maximum clamping voltage at 24.6 A peak pulse current (IPPM), and 600 W peak pulse power capability with 10/1000 µs waveform - deployed to protect MOSFETs, ICs, and sensor signal lines in industrial motor drives.
For engineers reviewing the SMBJ15AHM3/H datasheet, SMBJ15AHM3/H pinout, SMBJ15AHM3/H application, or SMBJ15AHM3/H equivalent, key selection criteria include its unidirectional polarity, AEC-Q101 qualification status (via HM3 suffix), 1.0 µA max reverse leakage at VWM, and compatibility with automated SMT placement on 0.2" × 0.2" copper pads.
Technical Context
This TVS diode operates as a fast-acting shunt protector: under overvoltage conditions exceeding its breakdown voltage range (16.7–18.5 V at 1 mA test current), it avalanches to clamp transient energy away from downstream circuitry. Its glass-passivated junction ensures stable surge performance and low incremental surge resistance.
The device is rated for -55 °C to +150 °C operating junction temperature, with thermal resistance of 100 °C/W (junction-to-ambient) and 20 °C/W (junction-to-lead), enabling reliable operation in thermally constrained PCB layouts without forced cooling.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 15 V - Maximum continuous reverse voltage before significant leakage; defines safe operating margin below clamping threshold. |
| VBR (Breakdown Voltage) | 16.7–18.5 V at 1 mA - Confirmed avalanche initiation range; ensures predictable turn-on during transients. |
| VC (Clamping Voltage) | 24.4 V at 24.6 A IPPM - Peak voltage seen by protected circuit during 10/1000 µs surge; critical for IC-level voltage tolerance matching. |
| PPPM (Peak Pulse Power) | 600 W - Sustained energy dissipation capability under standardized 10/1000 µs waveform; validates protection against IEC 61000-4-5 Level 3 surges. |
| ID (Reverse Leakage) | 1.0 µA max at VWM - Low leakage preserves signal integrity and minimizes standby power loss in always-on interfaces. |
| TJ max | +150 °C - Enables deployment in under-hood automotive modules and industrial power supplies with high ambient temperatures. |
| Package | SMB (DO-214AA) - Standardized 2-pin surface-mount outline with 0.205" × 0.130" footprint; compatible with IPC-7351B land patterns. |
Pinout & Package
Package: SMB (DO-214AA), molded plastic case with matte tin-plated leads; cathode indicated by band marking on unidirectional devices.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal during forward conduction | Connected to system ground or lower-potential rail; enables clamping when cathode-side voltage exceeds VBR. |
| Cathode | Current exit terminal during avalanche clamping | Connected to protected line (e.g., 15 V supply rail); carries full surge current to ground during transient events. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified (HM3 suffix) | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing - supports under-hood and ADAS module designs. |
| 600 W peak pulse power (10/1000 µs) | Meets IEC 61000-4-5 surge immunity requirements for industrial equipment up to Level 3 (1 kV line-earth, 2 kV line-line). |
| Low clamping ratio (VC/VWM = 1.63) | Minimizes overvoltage stress on protected ICs - e.g., ensures <24.4 V reaches a 15 V-rated microcontroller I/O pin during surge. |
| MSL Level 1 (JEDEC J-STD-020) | Unlimited floor life at ≤30 °C/60% RH; supports reflow soldering at peak 260 °C without moisture-induced failure. |
| Halogen-free & RoHS-compliant | Complies with EU Directive 2011/65/EU and IPC-1752A material declarations - required for CE-marked industrial and consumer products. |
Applications
| Industrial Motor Drives | Automotive Body Control Modules |
|---|---|
Use Scenario: Protection of gate drivers and MCU I/O pins against inductive kickback from relay coils and solenoid loads. IC Role / Device Role / Timing Role: Shunt clamping element placed between 12–24 V supply rail and ground, triggered within <1 ns of overvoltage event. Use Value: Limits transient voltage to ≤24.4 V, preventing latch-up or oxide damage in 3.3 V/5 V logic interfacing with high-side switches. |
Use Scenario: Surge suppression on LIN bus lines and sensor inputs (e.g., ambient temperature, door position) exposed to load dump and jump-start conditions. IC Role / Device Role / Timing Role: Unidirectional TVS connected anode-to-ground, cathode-to-LIN line; clamps negative transients and positive spikes above 15 V. Use Value: Maintains signal integrity during ISO 7637-2 Pulse 1 (−150 V, 2 Ω source) and Pulse 2a (+100 V, 10 Ω), ensuring uninterrupted communication. |
| Telecom Power Supplies | Consumer Appliance Control Boards |
Use Scenario: Input-stage protection for AC-DC adapters and PoE injectors subjected to lightning-induced surges on primary-side DC rails. IC Role / Device Role / Timing Role: Primary-side TVS across bulk capacitor terminals; absorbs energy before it propagates to secondary-side regulation circuitry. Use Value: Withstands 600 W pulses without degradation, extending service life in outdoor telecom cabinets where surge exposure is frequent. |
Use Scenario: ESD and switching transient protection on microcontroller GPIOs controlling relays, displays, and touch panels in washing machines and HVAC controllers. IC Role / Device Role / Timing Role: Localized TVS per I/O line, placed adjacent to connector or switch; provides sub-nanosecond response to human-body-model (HBM) discharges. Use Value: 1.0 µA leakage avoids false triggering of capacitive touch sensors; low-profile SMB package fits dense control board layouts. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ15AHE3/H | RoHS-compliant but not halogen-free; lacks AEC-Q101 qualification. | Suitable for commercial-grade industrial equipment where automotive reliability is not mandated. | Select when cost sensitivity outweighs halogen-free or automotive qualification requirements. |
| SMBJ15CAHM3/H | Bidirectional variant with same VWM (15 V), symmetric clamping in both polarities. | Required for AC-coupled or differential signal lines (e.g., RS-485, CAN) where negative transients must also be suppressed. | Choose only if bidirectional protection is explicitly needed - unidirectional SMBJ15AHM3/H offers lower capacitance and tighter VBR tolerance. |
Compared with SMBJ15AHE3/H, SMBJ15AHM3/H adds halogen-free construction and AEC-Q101 validation for harsh environments; versus SMBJ15CAHM3/H, it delivers superior unidirectional clamping precision and lower leakage for DC-biased rails.
Availability
SMBJ15AHM3/H is available at Aetrix Electronics and suitable for industrial motor drives, automotive body control modules, and telecom power supplies requiring stable component supply with guaranteed long-term sourcing.
Supply support for SMBJ15AHM3/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 optimization.
The SMBJ series was engineered for robust transient suppression in space-constrained, high-reliability systems - targeting automotive, industrial, and telecom markets where surge immunity and long-term stability are non-negotiable.
FAQ
What is the breakdown voltage range for SMBJ15AHM3/H?
The SMBJ15AHM3/H has a specified breakdown voltage (VBR) range of 16.7 V to 18.5 V at 1 mA test current, measured per ANSI/IEEE C62.35 standards. This range ensures consistent avalanche initiation across production lots and temperature extremes, directly supporting its role as a precise clamping element in 15 V rail protection schemes.
Is SMBJ15AHM3/H suitable for automotive applications?
Yes, SMBJ15AHM3/H is AEC-Q101 qualified (indicated by the HM3 suffix), having passed stress tests including high-temperature reverse bias, temperature cycling, and mechanical shock. It is approved for use in automotive body control modules, infotainment power supplies, and sensor interfaces where reliability under thermal and vibration stress is mandatory.
What does the "HM3" suffix signify in SMBJ15AHM3/H?
The "HM3" suffix denotes halogen-free, RoHS-compliant construction with AEC-Q101 qualification. Unlike base "M3" parts, HM3 variants undergo additional automotive-grade reliability screening and meet JEDEC MSL Level 1 for moisture sensitivity - confirming suitability for lead-free reflow and high-volume automotive manufacturing.
How does SMBJ15AHM3/H compare to SMBJ15AHE3/H?
SMBJ15AHM3/H and SMBJ15AHE3/H share identical electrical specs (VWM, VBR, VC, PPPM), but differ in material compliance: HM3 is halogen-free and AEC-Q101 qualified, while HE3 is RoHS-compliant only. The HM3 version supports automotive Tier-1 supply chains and green product mandates where halogen content restrictions apply.
What is the maximum clamping voltage of SMBJ15AHM3/H at rated surge current?
The SMBJ15AHM3/H exhibits a maximum clamping voltage (VC) of 24.4 V at its rated peak pulse current (IPPM) of 24.6 A, tested with a 10/1000 µs waveform. This value is guaranteed across temperature and lot variations, enabling accurate worst-case overvoltage margining for protected ICs such as 24 V-rated CAN transceivers or 3.3 V microcontrollers with level-shifting interfaces.
SMBJ15AHM3/H 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):
- 15V
- Voltage - Breakdown (Min):
- 16.7V
- Voltage - Clamping (Max) @ Ipp:
- 24.4V
- Current - Peak Pulse (10/1000µs):
- 24.6A
- Power - Peak Pulse:
- 600W
- 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)
SMBJ15AHM3/H FAQ
1.How can I place an order for SMBJ15AHM3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ15AHM3/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 SMBJ15AHM3/H reliable?
The price and inventory of SMBJ15AHM3/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ15AHM3/H is usually 5 days.
3.What payment methods are accepted for SMBJ15AHM3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ15AHM3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ15AHM3/H?
SMBJ15AHM3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ15AHM3/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 SMBJ15AHM3/H?
For technical support, including SMBJ15AHM3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ15AHM3/H requirements.
6.How does Aetrix verify that SMBJ15AHM3/H is sourced from the original manufacturer or authorized distributors?
All SMBJ15AHM3/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 SMBJ15AHM3/H meets industry standards.
7.What is the process for return or replacement of SMBJ15AHM3/H?
All SMBJ15AHM3/H units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ15AHM3/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 SMBJ15AHM3/H part is unused and in its original packaging.
Return procedure for SMBJ15AHM3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ15AHM3/H Tags
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