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Vishay General Semiconductor - Diodes Division SMBJ6.5CAHM3_A/H
- Part No.:
- SMBJ6.5CAHM3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ6.5CAHM3_A/H.pdf
- Description:
- TVS DIODE 6.5VWM 11.2VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:5,112
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Product details
Overview
SMBJ6.5CAHM3_A/H from Vishay General Semiconductor is a bidirectional surface-mount transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, designed for clamping fast-rising ESD and surge transients on signal/power lines. It features 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 IPPM - used for protecting MOSFET gates, sensor I/O, and USB/RS-485 interfaces in industrial and automotive control modules.
For engineers reviewing the SMBJ6.5CAHM3_A/H datasheet, SMBJ6.5CAHM3_A/H pinout, SMBJ6.5CAHM3_A/H application, or SMBJ6.5CAHM3_A/H equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification status, thermal resistance (RθJA = 100 °C/W), low leakage (<500 µA at VWM), and halogen-free RoHS compliance per HM3 suffix.
Technical Context
This device operates as a voltage-clamped shunt protector: under normal bias it presents high impedance (<500 µA leakage at 6.5 V), then rapidly avalanches into low-impedance conduction when transient voltage exceeds VBR (7.22–7.98 V). Its glass-passivated junction ensures stable breakdown and fast response (<1 ns), while the SMB package supports automated placement and meets MSL Level 1 reflow (260 °C peak).
The SMBJ6.5CAHM3_A/H is rated for repetitive 10/1000 µs surges up to 600 W with 0.01% duty cycle, derates linearly above 25 °C ambient (per Fig. 2), and sustains 100 A non-repetitive forward surge (8.3 ms half-sine) in unidirectional mode - though as a bidirectional part, it delivers symmetrical clamping in both polarities without polarity marking.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 6.5 V - maximum continuous reverse voltage before significant leakage; sets operating margin below clamping threshold |
| VBR (Breakdown Voltage) | 7.22–7.98 V at 10 mA - guaranteed avalanche initiation range; defines minimum overvoltage triggering point |
| VC (Clamping Voltage) | ≤11.2 V at 53.6 A IPPM - peak voltage seen by protected circuit during worst-case 600 W transient |
| PPPM (Peak Pulse Power) | 600 W (10/1000 µs) - energy-handling capacity for lightning/surge immunity per IEC 61000-4-5 |
| ID (Reverse Leakage) | ≤500 µA at 6.5 V - ensures minimal standby current drain on sensitive 3.3 V/5 V rails |
| TJ max. | +150 °C - enables operation in under-hood automotive or enclosed industrial enclosures |
| Package | SMB (DO-214AA) - 0.205" × 0.130" footprint; compatible with standard SMT pick-and-place and reflow profiles |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, bidirectional configuration - no polarity marking; symmetrical terminals function as anode/cathode depending on transient polarity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Terminal 1 | Anode / Cathode (bidirectional) | Either terminal conducts during positive or negative transients; no fixed polarity - connects across protected line and ground |
| Terminal 2 | Anode / Cathode (bidirectional) | Paired terminal completing the bidirectional clamp path; requires symmetric PCB layout for balanced ESD dissipation |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive electronics per stress test requirements - supports under-hood and infotainment system deployment |
| Halogen-free & RoHS-compliant (HM3) | Meets IPC-1752A material declaration standards and EU RoHS Directive 2011/65/EU Annex II |
| 600 W peak pulse power (10/1000 µs) | Withstands IEC 61000-4-5 Level 4 (4 kV line-to-line, 2 kV line-to-ground) surge events without degradation |
| Low clamping ratio (VC/VBR ≈ 1.4) | Minimizes voltage overshoot during transients - critical for protecting 3.3 V logic and low-threshold MOSFETs |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and standard reflow without baking - reduces manufacturing overhead |
Applications
| Automotive Sensor Protection | Industrial RS-485 Interface |
|---|---|
Use Scenario: Protecting CAN/LIN bus nodes and temperature/pressure sensors exposed to load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Bidirectional shunt clamp placed between signal line and chassis ground to divert >100 A transients away from PHY ICs. Use Value: Prevents latch-up or gate oxide damage in automotive-grade microcontrollers and transceivers during 12 V/24 V system switching events. |
Use Scenario: Safeguarding differential data lines in factory automation PLCs against EFT bursts and induced surges from motor drives. IC Role / Device Role / Timing Role: Paired TVS devices across A/B lines and to ground, providing symmetrical common-mode and differential-mode suppression. Use Value: Maintains signal integrity at 10 Mbps RS-485 rates by limiting transient-induced jitter and preventing receiver saturation. |
| USB 2.0 Port Protection | DC Power Rail Clamp |
Use Scenario: Shielding upstream/downstream USB ports in embedded hosts and peripherals from human-body-model (HBM) ESD. IC Role / Device Role / Timing Role: Low-capacitance bidirectional TVS placed on D+/D− lines to ground, meeting IEC 61000-4-2 ±15 kV contact discharge. Use Value: Avoids data corruption or enumeration failure by clamping sub-100 ns ESD spikes below USB transceiver absolute maximum ratings. |
Use Scenario: Suppressing inductive kickback from solenoids, relays, and DC motors on 5–24 V supply rails in robotics and HVAC controls. IC Role / Device Role / Timing Role: Parallel-connected TVS absorbing stored inductor energy during switch-off, limiting rail voltage to safe levels. Use Value: Eliminates need for bulkier MOVs or RC snubbers - saves board space while delivering repeatable 600 W surge handling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ6.5CAHE3_A/H | RoHS-compliant but not halogen-free; same electrical specs and AEC-Q101 qualification | Acceptable where halogen content is unrestricted (e.g., commercial-grade consumer products) | Select when cost sensitivity outweighs halogen-free requirement and automotive qualification is still needed |
| SMAJ6.5CAHM3_A/H | Lower 400 W PPPM rating; SMA package (smaller footprint, higher RθJA = 140 °C/W) | Suitable only for lower-energy transients or space-constrained designs with adequate thermal relief | Choose only if board area is critical and surge threat level is limited to IEC 61000-4-2 Level 3 (8 kV air/6 kV contact) |
Compared with SMBJ6.5CAHE3_A/H, the SMBJ6.5CAHM3_A/H adds halogen-free compliance without sacrificing surge rating or automotive qualification; versus SMAJ6.5CAHM3_A/H, it delivers +50% pulse power headroom and superior thermal performance in the same production flow - making it optimal for industrial and automotive front-end protection.
Availability
SMBJ6.5CAHM3_A/H is available at Aetrix Electronics and suitable for automotive sensor modules, industrial communication interfaces, and DC power distribution systems requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for SMBJ6.5CAHM3_A/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, MOSFETs, and protection devices with emphasis on reliability, automotive qualification, and high-volume manufacturability.
The SMBJ series targets robust transient suppression in harsh environments - engineered for AEC-Q101 compliance, high surge endurance, and seamless integration into automated SMT lines for automotive, industrial, and telecom end equipment.
FAQ
What is the clamping voltage of SMBJ6.5CAHM3_A/H at its rated peak pulse current?
The SMBJ6.5CAHM3_A/H clamps to a maximum of 11.2 V when subjected to its peak pulse current (IPPM) of 53.6 A under the standardized 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and guarantees that downstream circuitry sees no more than 11.2 V during a full 600 W transient event - critical for safeguarding 3.3 V or 5 V logic interfaces. The SMBJ6.5CAHM3_A/H achieves this with low incremental surge resistance and fast avalanche response.
Is SMBJ6.5CAHM3_A/H suitable for automotive applications?
Yes, SMBJ6.5CAHM3_A/H is AEC-Q101 qualified and explicitly designated for automotive use via its HM3 suffix and "_X" revision coding (e.g., A/H). It passes stress tests including high-temperature reverse bias, temperature cycling, and mechanical shock - enabling deployment in engine control units, body electronics, and ADAS sensor modules. The SMBJ6.5CAHM3_A/H also meets MSL Level 1 for lead-free reflow, supporting modern automotive PCB assembly processes.
How does the bidirectional design of SMBJ6.5CAHM3_A/H affect its PCB layout?
The SMBJ6.5CAHM3_A/H has no polarity marking and functions identically in both directions, so PCB layout requires symmetrical trace routing to ground for balanced transient dissipation - especially important in differential lines like RS-485 or USB. Unlike unidirectional TVS diodes, it eliminates orientation errors during placement and simplifies design review. The SMBJ6.5CAHM3_A/H's DO-214AA footprint supports standard 0.2" × 0.2" copper pads per terminal, per Vishay's recommended thermal pad layout.
What is the maximum reverse leakage current for SMBJ6.5CAHM3_A/H at its stand-off voltage?
At its 6.5 V stand-off voltage (VWM), the SMBJ6.5CAHM3_A/H exhibits a maximum reverse leakage current (ID) of 500 µA at 25 °C ambient - verified per the Vishay datasheet (Document Number: 88392, Rev. 09-Jan-2024). This low leakage ensures minimal impact on battery-powered or high-impedance sensor circuits. The SMBJ6.5CAHM3_A/H maintains this spec across its full operating temperature range (–55 °C to +150 °C), with leakage increasing predictably per thermal coefficient curves in the datasheet.
Does SMBJ6.5CAHM3_A/H require external heat sinking in typical applications?
No, SMBJ6.5CAHM3_A/H is designed for operation without external heatsinking when mounted on the recommended 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal - achieving a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W. In continuous 5.0 W power dissipation scenarios, board-level copper area suffices; however, for repetitive surge duty cycles above 0.01%, derating per Figure 2 in the Vishay datasheet is required. The SMBJ6.5CAHM3_A/H's low RθJL (20 °C/W) further enhances thermal coupling to PCB traces.
SMBJ6.5CAHM3_A/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:
- Obsolete
- 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_A/H FAQ
1.How can I place an order for SMBJ6.5CAHM3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ6.5CAHM3_A/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 SMBJ6.5CAHM3_A/H reliable?
The price and inventory of SMBJ6.5CAHM3_A/H 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_A/H is usually 5 days.
3.What payment methods are accepted for SMBJ6.5CAHM3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ6.5CAHM3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ6.5CAHM3_A/H?
SMBJ6.5CAHM3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ6.5CAHM3_A/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 SMBJ6.5CAHM3_A/H?
For technical support, including SMBJ6.5CAHM3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ6.5CAHM3_A/H requirements.
6.How does Aetrix verify that SMBJ6.5CAHM3_A/H is sourced from the original manufacturer or authorized distributors?
All SMBJ6.5CAHM3_A/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 SMBJ6.5CAHM3_A/H meets industry standards.
7.What is the process for return or replacement of SMBJ6.5CAHM3_A/H?
All SMBJ6.5CAHM3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ6.5CAHM3_A/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 SMBJ6.5CAHM3_A/H part is unused and in its original packaging.
Return procedure for SMBJ6.5CAHM3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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