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Vishay General Semiconductor - Diodes Division SMBJ9.0CAHM3_A/I
- Part No.:
- SMBJ9.0CAHM3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ9.0CAHM3_A/I.pdf
- Description:
- TVS DIODE 9VWM 15.4VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:4,331
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Product details
Overview
SMBJ9.0CAHM3_A/I from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMB (DO-214AA) package, designed for clamping voltage transients on signal or power lines. It features a 9.0 V stand-off voltage (VWM), 15.4 V maximum clamping voltage (VC) at 39.0 A peak pulse current (IPPM), and 600 W peak pulse power (PPPM) with 10/1000 µs waveform - used to protect MOSFETs, ICs, and sensor signal lines in industrial and telecom equipment.
For engineers reviewing the SMBJ9.0CAHM3_A/I datasheet, SMBJ9.0CAHM3_A/I pinout, SMBJ9.0CAHM3_A/I application, or SMBJ9.0CAHM3_A/I equivalent, key selection criteria include bidirectional surge suppression capability, low clamping ratio (VC/VWM = 1.71), AEC-Q101 qualification status, halogen-free RoHS compliance, and compatibility with automated SMT placement on 0.2" × 0.2" copper pads.
Technical Context
This device operates as a voltage-clamping protector with symmetrical breakdown behavior in both polarities due to its bidirectional construction. Its glass-passivated junction ensures stable avalanche characteristics and fast response time (<1 ns), while the low incremental surge resistance enables effective energy diversion during ESD or lightning-induced transients.
The SMBJ9.0CAHM3_A/I is rated for -55 °C to +150 °C operating junction temperature and meets MSL Level 1 per J-STD-020 with 260 °C reflow peak. Its thermal resistance (RθJA = 100 °C/W) and junction-to-lead resistance (RθJL = 20 °C/W) support reliable operation under repetitive surge conditions when mounted per recommended pad layout.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 9.0 V - Maximum continuous reverse working voltage before clamping initiates; defines safe operating margin below breakdown. |
| VBR min/max | 10.0 V / 11.1 V at IT = 1.0 mA - Confirmed bidirectional breakdown threshold range; ensures consistent turn-on across polarity. |
| VC @ IPPM | 15.4 V at 39.0 A - Clamped voltage during 10/1000 µs transient; determines maximum stress imposed on protected circuitry. |
| PPPM | 600 W - Peak pulse power handling with standard 10/1000 µs waveform; validates robustness against IEC 61000-4-5 surges. |
| ID @ VWM | 1.0 µA - Reverse leakage at stand-off voltage; ensures minimal quiescent power loss and signal integrity in high-impedance paths. |
| TJ max. | +150 °C - Maximum junction temperature; supports operation in under-hood automotive or industrial ambient environments. |
| Package | SMB (DO-214AA) - Standardized surface-mount outline with 5.59 mm × 4.06 mm footprint; compatible with JEDEC MS-012AC. |
Pinout & Package
Package: SMB (DO-214AA), molded plastic case with matte tin-plated leads, UL 94 V-0 rated compound, no polarity marking for bidirectional configuration.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode / Anode (symmetrical) | Bidirectional avalanche terminals | No functional distinction between terminals; either lead may connect to line or ground - enables flexible PCB layout without orientation constraints. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 µs) | Validated surge immunity for IEC 61000-4-5 Level 3 (1 kV line-to-line, 2 kV line-to-ground) in properly designed circuits. |
| AEC-Q101 qualified (HM3 suffix) | Qualified for automotive electronics per stress test requirements including HTOL, TC, AC/DC HAST, and ESD-HBM ≥ 8 kV. |
| Halogen-free & RoHS-compliant | Meets EU RoHS Directive 2011/65/EU and IPC-1752A material declaration requirements for green manufacturing. |
| Low clamping ratio (VC/VWM = 1.71) | Minimizes overvoltage exposure to downstream components compared to higher-ratio TVS devices, improving system-level reliability. |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and standard reflow profile (peak 260 °C) without baking - reduces production handling overhead. |
Applications
| Industrial Motor Drives | Automotive Body Control Modules |
|---|---|
|
Use Scenario: Protection of gate-drive signal lines against inductive kickback from relay or solenoid switching. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed across driver output to limit transient excursions beyond MOSFET VGS rating. Use Value: Prevents gate oxide damage and false triggering by limiting transient peaks to ≤15.4 V while maintaining 9.0 V signal integrity during normal operation. |
Use Scenario: Surge suppression on LIN bus lines exposed to load dump and jump-start events in vehicle cabin networks. IC Role / Device Role / Timing Role: Line-to-line and line-to-ground transient suppressor integrated into LIN transceiver interface PCB. Use Value: Ensures uninterrupted communication during ISO 16750-2 pulse 5a (load dump) and pulse 4 (jump start) by clamping to 15.4 V within nanoseconds. |
| Telecom Power Supply Inputs | Consumer Sensor Interface Boards |
|
Use Scenario: Input-stage protection for 12 V DC-DC converters subjected to lightning-induced surges on outdoor telecom equipment. IC Role / Device Role / Timing Role: Primary-level TVS placed after input filter but before converter controller IC. Use Value: Absorbs up to 600 W transient energy without degradation, preserving converter uptime and reducing need for redundant protection stages. |
Use Scenario: ESD safeguarding of analog outputs from MEMS accelerometers and environmental sensors in smart home hubs. IC Role / Device Role / Timing Role: Low-capacitance (<100 pF typical) bidirectional clamp on sensor analog output traces. Use Value: Maintains signal fidelity (no loading effect) while passing IEC 61000-4-2 ±8 kV contact discharge without latch-up or parametric shift. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ9.0CAHE3_A/I | Same electrical specs, RoHS-compliant but not halogen-free; uses standard SnPb-equivalent matte tin plating. | Lacks halogen-free certification required for certain automotive Tier 1 supply chains and EU green procurement mandates. | Select SMBJ9.0CAHE3_A/I only when halogen-free content is not contractually mandated. |
| SMAJ9.0CAHM3_A/I | Lower PPPM (400 W), smaller SMA (DO-214AC) package, identical VWM/VC but higher RθJA (140 °C/W). | Insufficient for IEC 61000-4-5 Level 4 surges; limited thermal margin in high-ambient or high-duty-cycle applications. | Choose SMAJ9.0CAHM3_A/I only for space-constrained designs where 400 W rating and reduced thermal performance are acceptable. |
Compared with SMBJ9.0CAHE3_A/I and SMAJ9.0CAHM3_A/I, the SMBJ9.0CAHM3_A/I uniquely combines halogen-free compliance, 600 W surge capacity, and industry-standard SMB thermal performance - making it the preferred choice for AEC-Q101–required automotive and high-reliability industrial deployments.
Availability
SMBJ9.0CAHM3_A/I is available at Aetrix Electronics and suitable for industrial motor drives, automotive body control modules, and telecom power supply inputs requiring stable component supply, long-term lifecycle support, and traceable halogen-free sourcing.
Supply support for SMBJ9.0CAHM3_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, MOSFETs, and protection devices with emphasis on reliability, efficiency, and application-specific optimization.
The SMBJ series is engineered for high-energy transient suppression in harsh environments, targeting automotive, industrial, and telecom systems where robustness, AEC-Q101 compliance, and precise clamping performance are mandatory.
FAQ
What is the clamping voltage of SMBJ9.0CAHM3_A/I at its rated peak pulse current?
The SMBJ9.0CAHM3_A/I has a maximum clamping voltage (VC) of 15.4 V at 39.0 A peak pulse current (IPPM) under the standard 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and defines the upper voltage limit imposed on protected circuitry during surge events. The SMBJ9.0CAHM3_A/I maintains this clamping performance across its full operating temperature range (-55 °C to +150 °C), ensuring consistent protection behavior in demanding thermal environments.
Is SMBJ9.0CAHM3_A/I suitable for automotive applications?
Yes, SMBJ9.0CAHM3_A/I is AEC-Q101 qualified (indicated by the HM3 suffix) and specifically designed for automotive use. It passes stress tests including high-temperature operating life (HTOL), temperature cycling (TC), and human-body-model ESD ≥ 8 kV. The SMBJ9.0CAHM3_A/I is commonly deployed in body control modules, infotainment power rails, and LIN/CAN interface protection where halogen-free, RoHS-compliant, and thermally robust TVS performance is required.
How does the bidirectional configuration of SMBJ9.0CAHM3_A/I affect its circuit implementation?
The SMBJ9.0CAHM3_A/I has no polarity marking and functions identically in both directions, allowing direct placement across any two nodes needing symmetrical transient suppression - such as line-to-line or line-to-ground in AC-coupled or floating systems. Unlike unidirectional TVS diodes, the SMBJ9.0CAHM3_A/I eliminates orientation errors during automated assembly and simplifies layout by removing the need for cathode alignment checks, reducing manufacturing defects and design review cycles.
What is the thermal resistance of SMBJ9.0CAHM3_A/I, and how does it impact PCB layout?
The SMBJ9.0CAHM3_A/I has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W and junction-to-lead resistance (RθJL) of 20 °C/W when mounted on the minimum recommended 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. To achieve rated 600 W pulse power, the PCB must follow Vishay's specified pad layout - undersized pads increase RθJA, causing excessive junction heating and potential parametric drift or failure during repetitive surges. The SMBJ9.0CAHM3_A/I's low RθJL also supports efficient heat conduction into internal copper planes.
Does SMBJ9.0CAHM3_A/I meet moisture sensitivity level (MSL) requirements for lead-free reflow?
Yes, SMBJ9.0CAHM3_A/I is rated MSL Level 1 per J-STD-020, with a maximum reflow peak temperature of 260 °C. This allows indefinite floor life and compatibility with standard lead-free reflow profiles without pre-baking. The SMBJ9.0CAHM3_A/I's molding compound and terminations are qualified for this classification, supporting high-yield automated assembly in commercial and automotive production lines where process control and throughput are critical.
SMBJ9.0CAHM3_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:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 9V
- Voltage - Breakdown (Min):
- 10V
- Voltage - Clamping (Max) @ Ipp:
- 15.4V
- Current - Peak Pulse (10/1000µs):
- 39A
- 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)
SMBJ9.0CAHM3_A/I FAQ
1.How can I place an order for SMBJ9.0CAHM3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ9.0CAHM3_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 SMBJ9.0CAHM3_A/I reliable?
The price and inventory of SMBJ9.0CAHM3_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 SMBJ9.0CAHM3_A/I is usually 5 days.
3.What payment methods are accepted for SMBJ9.0CAHM3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ9.0CAHM3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ9.0CAHM3_A/I?
SMBJ9.0CAHM3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ9.0CAHM3_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 SMBJ9.0CAHM3_A/I?
For technical support, including SMBJ9.0CAHM3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ9.0CAHM3_A/I requirements.
6.How does Aetrix verify that SMBJ9.0CAHM3_A/I is sourced from the original manufacturer or authorized distributors?
All SMBJ9.0CAHM3_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 SMBJ9.0CAHM3_A/I meets industry standards.
7.What is the process for return or replacement of SMBJ9.0CAHM3_A/I?
All SMBJ9.0CAHM3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ9.0CAHM3_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 SMBJ9.0CAHM3_A/I part is unused and in its original packaging.
Return procedure for SMBJ9.0CAHM3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ9.0CAHM3_A/I Tags
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ESD9B5.0ST5G
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DESD3V3E1BL-7B
Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Nexperia USA Inc.
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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