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Vishay General Semiconductor - Diodes Division SMBJ5.0CAHM3_B/I
- Part No.:
- SMBJ5.0CAHM3_B/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ5.0CAHM3_B/I.pdf
- Description:
- 600W,5.0V 5%,BIDIR,SMB TVS
- Quantity:
- Payment:
- Shipping:
Inventory:8,231
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Product details
Overview
SMBJ5.0CAHM3_B/I from Vishay General Semiconductor is a bidirectional surface-mount transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, designed for clamping ESD and surge transients on signal/power lines. It features 5.0 V stand-off voltage (VWM), 6.4–7.25 V breakdown range (VBR), 600 W peak pulse power (10/1000 µs), and clamps to ≤9.2 V at 65.2 A IPPM - used in USB, Ethernet, and sensor I/O protection in industrial and automotive control units.
For engineers reviewing the SMBJ5.0CAHM3_B/I datasheet, SMBJ5.0CAHM3_B/I pinout, SMBJ5.0CAHM3_B/I application, or SMBJ5.0CAHM3_B/I equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification status, MSL Level 1 moisture sensitivity, and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
This device operates as a voltage-clamped shunt protector: under normal bias it presents high impedance (<800 µA leakage at 5.0 V), but triggers into low-impedance conduction when transient voltage exceeds its 6.4–7.25 V breakdown threshold. Its glass-passivated junction ensures stable VBR tolerance and low incremental surge resistance.
Designed for unidirectional and bidirectional configurations, SMBJ5.0CAHM3_B/I meets UL 497B recognition (QVGQ2) and supports repetitive 0.01% duty cycle surges. The HM3 suffix denotes halogen-free, RoHS-compliant, AEC-Q101 qualified construction with matte tin-plated leads solderable per J-STD-002.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 5.0 V - maximum continuous reverse operating voltage before clamping initiates |
| VBR min/max | 6.4 V / 7.25 V - guaranteed breakdown range at 10 mA test current; defines turn-on threshold consistency |
| VC @ IPPM | ≤9.2 V at 65.2 A - clamping voltage during 600 W 10/1000 µs surge; determines protected circuit stress level |
| PPPM | 600 W - peak pulse power handling per JEDEC standard waveform; sets transient energy absorption capacity |
| ID @ VWM | ≤800 µA - reverse leakage at rated stand-off; impacts quiescent power loss in high-impedance circuits |
| TJ max | +150 °C - maximum junction temperature; enables operation in under-hood automotive environments |
| MSL Level | Level 1 (260 °C peak reflow) - supports standard lead-free SMT assembly without baking |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, bidirectional configuration with no polarity 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 Vishay recommendation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient return path (bidirectional) | Common reference node for symmetrical clamping; connects to GND or signal return plane |
| Cathode | Transient return path (bidirectional) | Electrically identical to Anode in bidirectional mode; no cathode band marking present |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or differential lines (e.g., RS-485, CAN) without polarity concerns |
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, humidity testing, and surge endurance |
| 600 W 10/1000 µs rating | Withstands IEC 61000-4-5 Level 4 (4 kV) surge events when properly laid out with low-inductance grounding |
| Halogen-free & RoHS | Meets EU Directive 2011/65/EU and IPC-1752A material declaration requirements for green manufacturing |
| Low clamping ratio (VC/VBR ≈ 1.3) | Minimizes overvoltage exposure to downstream ICs compared to higher-ratio TVS devices |
Applications
| Automotive Sensor Interface Protection | Industrial Ethernet PHY Port Protection |
|---|---|
Use Scenario: Protecting LIN/CAN transceiver I/O pins from load-dump and ISO 7637-2 pulse 5a/b transients in engine control modules. IC Role / Device Role / Timing Role: Shunt clamping element placed between signal line and chassis ground, triggered within <1 ns of overvoltage onset. Use Value: Limits transient voltage to ≤9.2 V, preventing damage to 5 V-tolerant transceivers while maintaining signal integrity during normal operation. | Use Scenario: Safeguarding RJ45 magnetics secondary side against ESD (IEC 61000-4-2 ±15 kV) and lightning-induced surges in factory automation gateways. IC Role / Device Role / Timing Role: Bidirectional voltage clamp across differential pair (TD+/TD−), referenced to isolated ground plane. Use Value: Absorbs 600 W surge energy without degradation, preserving Ethernet link stability and avoiding packet loss during field deployment. |
| USB 2.0 Data Line Protection | Smart Meter Communication Interface |
Use Scenario: Guarding D+ and D− lines of embedded USB host controllers against human-body-model ESD events in portable diagnostic tools. IC Role / Device Role / Timing Role: Low-capacitance (typ. 350 pF at 0 V) bidirectional TVS placed adjacent to connector, minimizing signal distortion. Use Value: Clamps ±8 kV contact discharge to <9.2 V within nanoseconds, ensuring USB enumeration remains functional after repeated ESD strikes. | Use Scenario: Securing RS-485 communication ports in utility smart meters exposed to induced surges from nearby power line switching. IC Role / Device Role / Timing Role: Primary overvoltage suppression device on bus lines, coordinated with secondary GDT or MOV stages in multi-level protection architecture. Use Value: Provides fast-response first-stage clamping (VC ≤9.2 V) to reduce stress on downstream isolators and transceivers, extending field lifetime. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ5.0CAHE3_B/I | RoHS-compliant, AEC-Q101 qualified, but not halogen-free; same electrical specs and package | Acceptable where halogen content is unrestricted (e.g., non-automotive industrial use) | Select when cost optimization is prioritized over halogen-free compliance |
| SMAJ5.0CA | Lower PPPM (400 W), larger VBR tolerance (6.4–8.1 V), SMA (DO-214AC) package (smaller thermal mass) | Limited to lower-energy transients; less robust in automotive under-hood environments | Choose only for space-constrained designs where 400 W surge margin suffices |
Compared with SMBJ5.0CAHM3_B/I, the HE3 variant trades halogen-free status for slightly lower cost without sacrificing AEC-Q101 qualification or clamping performance, while the SMAJ5.0CA offers footprint reduction at the expense of 33% lower surge power handling and reduced thermal robustness.
Availability
SMBJ5.0CAHM3_B/I is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial Ethernet PHY protection, and USB 2.0 data line safeguarding requiring stable component supply across extended production lifecycles.
Supply support for SMBJ5.0CAHM3_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 and application-specific validation.
The SMBJ series targets high-energy transient suppression in harsh environments; SMBJ5.0CAHM3_B/I specifically serves automotive and industrial applications demanding AEC-Q101 qualification, halogen-free materials, and precise 5.0 V stand-off voltage.
FAQ
What is the clamping voltage of SMBJ5.0CAHM3_B/I at its rated peak pulse current?
The SMBJ5.0CAHM3_B/I clamps to a maximum of 9.2 V at its specified peak pulse current of 65.2 A (10/1000 µs waveform). This value is measured under standardized test conditions with 0.2" × 0.2" copper pads and represents the upper limit of voltage seen by protected circuitry during a full-power surge event. Designers must ensure layout inductance is minimized to achieve this clamping performance in practice.
Is SMBJ5.0CAHM3_B/I suitable for automotive applications?
Yes, SMBJ5.0CAHM3_B/I is AEC-Q101 qualified and explicitly designated for automotive use via its HM3 suffix (halogen-free, RoHS-compliant, AEC-Q101 qualified). It supports operating junction temperatures up to +150 °C and meets UL 497B recognition for protectors, making it appropriate for engine control units, body electronics, and ADAS sensor interfaces where reliability under thermal and electrical stress is critical.
How does the bidirectional configuration of SMBJ5.0CAHM3_B/I affect its circuit implementation?
The bidirectional configuration of SMBJ5.0CAHM3_B/I means it functions identically in both polarities - no cathode band marking is present, and it protects AC signals or differential pairs without regard to voltage polarity. This eliminates orientation errors during placement and simplifies PCB design for interfaces like RS-485, CAN, or Ethernet, where symmetric transient suppression is required across two complementary lines referenced to a common ground.
What is the maximum reverse leakage current for SMBJ5.0CAHM3_B/I at its stand-off voltage?
At its 5.0 V stand-off voltage (VWM), SMBJ5.0CAHM3_B/I exhibits a maximum reverse leakage current (ID) of 800 µA at 25 °C. This parameter is critical for battery-powered or high-impedance sensing circuits where standby power loss must be minimized. Leakage increases with temperature, so system-level validation at maximum operating ambient is recommended for precision analog applications.
Does SMBJ5.0CAHM3_B/I require special PCB layout considerations?
Yes, SMBJ5.0CAHM3_B/I requires adherence to Vishay's recommended 5.0 mm × 5.0 mm copper pad dimensions per terminal to achieve rated 600 W pulse power dissipation. Short, wide traces to ground minimize inductance and preserve clamping speed; thermal vias under pads improve heat spreading. Deviation from these guidelines risks exceeding junction temperature limits or degrading clamping voltage performance during surge events.
SMBJ5.0CAHM3_B/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:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 5V
- Voltage - Breakdown (Min):
- 6.4V
- Voltage - Clamping (Max) @ Ipp:
- 9.2V
- Current - Peak Pulse (10/1000µs):
- 65.2A
- 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)
SMBJ5.0CAHM3_B/I FAQ
1.How can I place an order for SMBJ5.0CAHM3_B/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ5.0CAHM3_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 SMBJ5.0CAHM3_B/I reliable?
The price and inventory of SMBJ5.0CAHM3_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 SMBJ5.0CAHM3_B/I is usually 5 days.
3.What payment methods are accepted for SMBJ5.0CAHM3_B/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ5.0CAHM3_B/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ5.0CAHM3_B/I?
SMBJ5.0CAHM3_B/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ5.0CAHM3_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 SMBJ5.0CAHM3_B/I?
For technical support, including SMBJ5.0CAHM3_B/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ5.0CAHM3_B/I requirements.
6.How does Aetrix verify that SMBJ5.0CAHM3_B/I is sourced from the original manufacturer or authorized distributors?
All SMBJ5.0CAHM3_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 SMBJ5.0CAHM3_B/I meets industry standards.
7.What is the process for return or replacement of SMBJ5.0CAHM3_B/I?
All SMBJ5.0CAHM3_B/I units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ5.0CAHM3_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 SMBJ5.0CAHM3_B/I part is unused and in its original packaging.
Return procedure for SMBJ5.0CAHM3_B/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ5.0CAHM3_B/I Tags
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Diodes Incorporated
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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