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Vishay General Semiconductor - Diodes Division SMBJ6.5CAHM3_B/I
- Part No.:
- SMBJ6.5CAHM3_B/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ6.5CAHM3_B/I.pdf
- Description:
- 600W,6.5V 5%,BIDIR,SMB TVS
- Quantity:
- Payment:
- Shipping:
Inventory:3,833
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Product details
Overview
SMBJ6.5CAHM3_B/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 6.5 V stand-off voltage (VWM), 7.22–7.98 V breakdown voltage (VBR) at 10 mA, 600 W peak pulse power (10/1000 µs), and clamps to ≤11.2 V at 53.6 A peak surge current - used for protecting MOSFETs, ICs, and sensor interfaces in industrial and telecom equipment.
For engineers reviewing the SMBJ6.5CAHM3_B/I datasheet, SMBJ6.5CAHM3_B/I pinout, SMBJ6.5CAHM3_B/I application, or SMBJ6.5CAHM3_B/I equivalent, key selection criteria include bidirectional clamping capability, 11.2 V max clamping voltage at rated surge, AEC-Q101 qualification status, halogen-free RoHS compliance, and SMB package thermal performance under repetitive transient stress.
Technical Context
This device operates as a voltage-clamping protector with symmetrical avalanche behavior in both polarities, enabling robust protection of AC-coupled or floating signal paths without polarity sensitivity. Its low incremental surge resistance and fast response time (<1 ns) ensure effective suppression of ESD, lightning-induced surges, and inductive switching spikes.
The SMBJ6.5CAHM3_B/I is rated for 150 °C maximum junction temperature and exhibits a typical thermal resistance of 100 °C/W (junction-to-ambient) on standard 5.0 mm × 5.0 mm copper pads. It meets J-STD-020 MSL Level 1 and supports reflow soldering up to 260 °C peak.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 6.5 V - maximum continuous reverse voltage before significant leakage; defines operating margin below clamping threshold |
| VBR (Breakdown Voltage) | 7.22–7.98 V at 10 mA - guaranteed avalanche initiation range; ensures predictable turn-on during overvoltage events |
| VC (Clamping Voltage) | ≤11.2 V at IPPM = 53.6 A - peak voltage seen by protected circuit during 600 W transient; critical for IC I/O survivability |
| PPPM (Peak Pulse Power) | 600 W (10/1000 µs waveform) - standardized surge energy handling capacity; validates suitability for IEC 61000-4-5 Level 3/4 |
| ID (Reverse Leakage) | ≤500 µA at VWM - low standby current minimizes power loss and avoids false triggering in high-impedance circuits |
| TJ max. | 150 °C - enables reliable operation in under-hood automotive or enclosed industrial environments |
| Package | SMB (DO-214AA) - industry-standard surface-mount outline with 2.20 mm min. cathode/anode spacing; compatible with automated placement |
Pinout & Package
Package: SMB (DO-214AA), molded plastic case with matte tin-plated leads; no polarity marking for bidirectional types; meets UL 94 V-0 flammability rating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (negative polarity surge) | One terminal of symmetrical avalanche junction; conducts during negative excursions relative to cathode |
| Cathode | Transient current entry (positive polarity surge) | Second terminal of symmetrical avalanche junction; conducts during positive excursions relative to anode |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC lines, differential pairs, or ungrounded sensors without polarity concerns |
| 600 W peak pulse power (10/1000 µs) | Validates robustness against IEC 61000-4-5 combination wave surges up to 1 kV/42 Ω source impedance |
| AEC-Q101 qualified (HM3 suffix) | Confirms reliability for automotive subsystems including body control modules and infotainment power rails |
| Halogen-free & RoHS-compliant | Meets EU Directive 2011/65/EU and IPC-1752A material declaration requirements for green manufacturing |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and standard reflow without baking; simplifies SMT line integration |
Applications
| Industrial Motor Drives | Automotive Body Control Modules |
|---|---|
Use Scenario: Protection of gate drivers and current-sense amplifiers from inductive kickback during MOSFET switching in 24 V DC motor controllers. IC Role / Device Role / Timing Role: Voltage-clamping TVS placed across power supply rails and signal inputs to limit transient overshoot to safe levels. Use Value: Prevents latch-up or oxide damage in downstream analog front-ends by clamping to ≤11.2 V during 53.6 A surges. |
Use Scenario: Safeguarding LIN bus transceivers and microcontroller I/O pins against load dump and jump-start transients in door module ECUs. IC Role / Device Role / Timing Role: Bidirectional transient suppressor connected between LIN data line and ground to absorb ±100 V spikes. Use Value: Maintains communication integrity during ISO 7637-2 Pulse 5a events due to symmetrical 6.5 V stand-off and low clamping voltage. |
| Telecom Power Interfaces | Consumer Sensor Hubs |
Use Scenario: Input-stage protection for 48 V PoE-powered Ethernet switches against lightning-induced common-mode surges on RJ45 lines. IC Role / Device Role / Timing Role: Paired SMBJ6.5CAHM3_B/I devices used in bridge configuration across differential pairs to clamp mode conversion transients. Use Value: Enables compliance with IEC 61000-4-5 Level 4 (4 kV line-earth) by limiting coupled surge voltage to <12 V at IC inputs. |
Use Scenario: ESD protection for I²C lines connecting ambient light and proximity sensors to host MCU in smart home hubs. IC Role / Device Role / Timing Role: Low-capacitance bidirectional TVS placed directly at connector interface to shunt HBM ±8 kV discharges. Use Value: Preserves signal integrity with <100 pF junction capacitance while meeting IEC 61000-4-2 Level 4 immunity without signal distortion. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ6.5CAHE3_B/I | Same electrical specs; RoHS-compliant but not halogen-free; lacks AEC-Q101 qualification | Suitable for commercial-grade industrial or telecom use where automotive qualification is unnecessary | Select when halogen content or automotive reliability certification is not required; lower cost alternative |
| SMAJ6.5CAHM3_A/I | Lower PPPM (400 W vs. 600 W); SMA package (smaller footprint, higher RθJA ≈ 140 °C/W) | Acceptable for lower-energy transients or space-constrained PCBs where thermal derating is managed | Choose only if board layout prohibits SMB size and surge energy remains within 400 W limit |
Compared with SMBJ6.5CAHM3_B/I, the HE3 variant trades halogen-free construction and AEC-Q101 qualification for cost savings in non-automotive settings, while the SMAJ6.5CAHM3_A/I reduces surge capacity and thermal performance to fit tighter layouts - neither offers drop-in replacement without verifying layout clearance and thermal margin.
Availability
SMBJ6.5CAHM3_B/I is available at Aetrix Electronics and suitable for industrial motor drives, automotive body control modules, and telecom power interfaces requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for SMBJ6.5CAHM3_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, and protection devices with emphasis on reliability, efficiency, and application-specific optimization.
The SMBJ series targets high-energy transient suppression in harsh environments, with design focus on automotive, industrial, and telecom systems demanding AEC-Q101 qualification, halogen-free materials, and repeatable clamping performance.
FAQ
What does the "CA" suffix indicate in SMBJ6.5CAHM3_B/I?
The "CA" suffix denotes a bidirectional configuration - meaning SMBJ6.5CAHM3_B/I provides symmetrical transient suppression for both positive and negative voltage excursions. Unlike unidirectional variants (e.g., SMBJ6.5A), it has no cathode marking and functions identically in either polarity, making it ideal for AC-coupled or floating signal lines where polarity cannot be assumed.
Is SMBJ6.5CAHM3_B/I qualified for automotive applications?
Yes, SMBJ6.5CAHM3_B/I is AEC-Q101 qualified, as confirmed by the "HM3" suffix (halogen-free, RoHS-compliant, and AEC-Q101 certified). This qualification covers stress testing for temperature cycling, humidity bias, mechanical shock, and accelerated life, validating its use in automotive body electronics, lighting modules, and infotainment power supplies per ISO/TS 16949 requirements.
What is the maximum clamping voltage of SMBJ6.5CAHM3_B/I under surge conditions?
The maximum clamping voltage (VC) of SMBJ6.5CAHM3_B/I is 11.2 V at a peak pulse current (IPPM) of 53.6 A, measured using the standardized 10/1000 µs waveform. This value represents the highest voltage imposed on the protected circuit during a 600 W transient event and is critical for ensuring downstream ICs remain within absolute maximum ratings.
How does the SMB package of SMBJ6.5CAHM3_B/I affect thermal performance?
The SMB (DO-214AA) package of SMBJ6.5CAHM3_B/I delivers a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on 5.0 mm × 5.0 mm copper pads per terminal. This allows sustained 5.0 W power dissipation at 50 °C ambient and supports reliable operation under repetitive surge conditions - significantly better than smaller packages like SMA (RθJA ≈ 140 °C/W).
Can SMBJ6.5CAHM3_B/I replace SMBJ6.5A in an existing design?
No - SMBJ6.5CAHM3_B/I is bidirectional while SMBJ6.5A is unidirectional; substituting them requires verifying circuit polarity and grounding topology. The unidirectional SMBJ6.5A uses a cathode band for orientation and conducts only during positive surges, whereas SMBJ6.5CAHM3_B/I clamps equally in both directions. Direct replacement may cause unintended conduction or failure to protect in certain configurations.
SMBJ6.5CAHM3_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):
- 6.5V
- Voltage - Breakdown (Min):
- 7.22V
- Voltage - Clamping (Max) @ Ipp:
- 11.2V
- Current - Peak Pulse (10/1000µs):
- 53.6A
- 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)
SMBJ6.5CAHM3_B/I FAQ
1.How can I place an order for SMBJ6.5CAHM3_B/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ6.5CAHM3_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 SMBJ6.5CAHM3_B/I reliable?
The price and inventory of SMBJ6.5CAHM3_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 SMBJ6.5CAHM3_B/I is usually 5 days.
3.What payment methods are accepted for SMBJ6.5CAHM3_B/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ6.5CAHM3_B/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ6.5CAHM3_B/I?
SMBJ6.5CAHM3_B/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ6.5CAHM3_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 SMBJ6.5CAHM3_B/I?
For technical support, including SMBJ6.5CAHM3_B/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ6.5CAHM3_B/I requirements.
6.How does Aetrix verify that SMBJ6.5CAHM3_B/I is sourced from the original manufacturer or authorized distributors?
All SMBJ6.5CAHM3_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 SMBJ6.5CAHM3_B/I meets industry standards.
7.What is the process for return or replacement of SMBJ6.5CAHM3_B/I?
All SMBJ6.5CAHM3_B/I units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ6.5CAHM3_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 SMBJ6.5CAHM3_B/I part is unused and in its original packaging.
Return procedure for SMBJ6.5CAHM3_B/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ6.5CAHM3_B/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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