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Vishay General Semiconductor - Diodes Division SMBJ6.5CAHM3_A/I
- Part No.:
- SMBJ6.5CAHM3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ6.5CAHM3_A/I.pdf
- Description:
- TVS DIODE 6.5VWM 11.2VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:2,756
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Product details
Overview
SMBJ6.5CAHM3_A/I from Vishay General Semiconductor is a bidirectional surface-mount transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, designed to protect sensitive electronics against voltage transients induced by inductive load switching and lightning surges. 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), clamping voltage of 11.2 V at 53.6 A, and operates across –55 °C to +150 °C junction temperature.
For engineers reviewing the SMBJ6.5CAHM3_A/I datasheet, SMBJ6.5CAHM3_A/I pinout, SMBJ6.5CAHM3_A/I application, or SMBJ6.5CAHM3_A/I equivalent, this device is selected for robust overvoltage protection on DC power rails, bidirectional signal lines, and automotive-grade sensor interfaces where low clamping voltage, fast response (<1 ns), and AEC-Q101 qualification are critical design requirements.
Technical Context
This bidirectional TVS diode uses a glass-passivated silicon junction to achieve low incremental surge resistance and excellent clamping performance under repetitive 10/1000 µs transients. Its symmetrical I-V characteristics enable identical protection in both polarities without polarity marking on the case.
The device is rated for 600 W peak pulse power with 0.01 % duty cycle, derated linearly above 25 °C ambient per Fig. 2, and exhibits a typical thermal resistance of 100 °C/W (junction-to-ambient) on standard 0.2" × 0.2" copper pads - enabling reliable operation in compact industrial and automotive PCB layouts.
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 - Confirmed breakdown range ensures predictable turn-on during transients |
| VC (Clamping Voltage) | 11.2 V at 53.6 A (10/1000 µs) - Limits downstream voltage stress to safe levels for 3.3 V/5 V ICs and MOSFET gates |
| PPPM (Peak Pulse Power) | 600 W - Sustains high-energy transients common in automotive load-dump and industrial motor-switching events |
| IPPM (Peak Pulse Current) | 53.6 A - Supports robust surge handling without degradation under repeated 10/1000 µs waveforms |
| TJ max. | +150 °C - Enables use in under-hood automotive environments and thermally constrained enclosures |
| Package | SMB (DO-214AA) - Surface-mount footprint compatible with automated assembly; MSL Level 1, lead-free matte tin terminations |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, bidirectional - no polarity marking; symmetrical terminals.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Transient current path | Both terminals function identically; conducts surge current in either direction when V > VBR |
| Case / Body | Thermal and mechanical interface | Non-electrical; provides thermal conduction to PCB copper pads (0.2" × 0.2" recommended per datasheet) |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection on AC-coupled or floating signal lines without polarity concerns |
| AEC-Q101 qualified | Validated for automotive applications including engine control units, body electronics, and ADAS sensor interfaces |
| 600 W peak pulse rating | Meets ISO 7637-2 Pulse 1, 2a, 3a/b and IEC 61000-4-5 Level 3 surge immunity requirements |
| Low clamping ratio (VC/VWM ≈ 1.72) | Minimizes overvoltage stress on protected circuitry while maintaining noise immunity margin |
| Halogen-free, RoHS-compliant (HM3 suffix) | Complies with automotive and industrial environmental regulations; JESD201 Class 2 whisker resistance |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor inputs (e.g., pressure, temperature) in vehicle ECUs exposed to load dump and ESD. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed directly at connector entry point to shunt transients before reaching signal conditioning ICs. Use Value: Prevents latch-up or permanent damage to 5 V rail and 3.3 V microcontrollers using < 11.2 V clamping at 53.6 A surge current. | Use Scenario: Safeguarding digital input modules in programmable logic controllers subjected to inductive kickback from solenoid valves and relay coils. IC Role / Device Role / Timing Role: Parallel-connected TVS on 24 V DC input lines to absorb 600 W energy spikes without affecting steady-state operation. Use Value: Eliminates need for external series impedance or RC snubbers due to sub-nanosecond response and low dynamic impedance. |
| Consumer Power Adapter Protection | Telecom Line Interface Protection |
Use Scenario: Secondary-side overvoltage suppression in USB-C PD adapters and AC/DC wall adapters vulnerable to mains-borne surges. IC Role / Device Role / Timing Role: Final-stage clamp on regulated 5 V/9 V/15 V outputs to prevent damage to connected devices during fault conditions. Use Value: Maintains UL 497B recognition and supports 100,000+ surge cycles with no parameter drift due to glass-passivated junction. | Use Scenario: Protection of Ethernet PHY interfaces and RS-485 transceivers in network switches and base station equipment. IC Role / Device Role / Timing Role: Differential-mode TVS across data pairs to suppress common-mode transients coupled onto twisted-pair cabling. Use Value: Preserves signal integrity up to 100 MHz with < 50 pF junction capacitance at zero bias, verified per Fig. 4. |
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_A/I | RoHS-compliant but not halogen-free; same electrical specs and AEC-Q101 qualification | Preferred for commercial/industrial designs where halogen content is unrestricted | Select when cost sensitivity outweighs halogen-free requirement; identical footprint and performance |
| SMAJ6.5CAHM3_A/I | Lower 400 W peak pulse power; SMA (DO-214AC) package with smaller footprint and higher thermal resistance | Suitable for space-constrained consumer electronics with lower surge exposure | Choose only if system-level surge testing confirms 400 W rating suffices; requires layout revision due to different pad dimensions |
Compared with SMBJ6.5CAHE3_A/I, the SMBJ6.5CAHM3_A/I adds halogen-free compliance without trade-offs in surge capability or qualification; versus SMAJ6.5CAHM3_A/I, it delivers 50 % higher pulse power in a slightly larger but thermally superior SMB package - critical for automotive and industrial reliability.
Availability
SMBJ6.5CAHM3_A/I is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, and telecom line protection requiring stable component supply, long-term lifecycle support, and AEC-Q101 traceability.
Supply support for SMBJ6.5CAHM3_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 was developed specifically for high-reliability transient suppression in automotive, industrial, and telecom systems - prioritizing low clamping voltage, repeatable surge endurance, and AEC-Q101 qualification from wafer to final test.
FAQ
What is the clamping voltage of SMBJ6.5CAHM3_A/I at its rated peak pulse current?
The SMBJ6.5CAHM3_A/I has a maximum clamping voltage (VC) of 11.2 V when subjected to its rated peak pulse current of 53.6 A under the standard 10/1000 µs waveform. This value is measured per Figure 1 in Vishay document 88392 and ensures protected circuits remain within safe operating limits during surge events. The SMBJ6.5CAHM3_A/I maintains this clamping performance across its full operating temperature range.
Is SMBJ6.5CAHM3_A/I suitable for automotive applications?
Yes, SMBJ6.5CAHM3_A/I is AEC-Q101 qualified and explicitly designated for automotive use via its HM3 suffix and "_X" revision coding (A/I). It meets stringent requirements for under-hood and chassis-mounted electronics, including thermal cycling, humidity resistance, and surge endurance. The SMBJ6.5CAHM3_A/I is commonly deployed in engine control units, body control modules, and ADAS sensor nodes where certified reliability is mandatory.
How does the bidirectional configuration of SMBJ6.5CAHM3_A/I affect its circuit placement?
The SMBJ6.5CAHM3_A/I has no polarity marking and functions identically in both directions, allowing placement across any two points requiring symmetrical overvoltage protection - such as differential signal lines, AC-coupled interfaces, or ungrounded power rails. Unlike unidirectional variants, the SMBJ6.5CAHM3_A/I eliminates orientation errors during automated assembly and avoids the need for dual-diode configurations in floating systems.
What is the thermal resistance of SMBJ6.5CAHM3_A/I, and how does it impact PCB layout?
The SMBJ6.5CAHM3_A/I has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. This value assumes minimum recommended pad layout per datasheet Figure 5. To maintain safe junction temperatures under sustained surge duty, designers must allocate adequate copper area and avoid excessive trace length between the SMBJ6.5CAHM3_A/I and ground/power planes.
Does SMBJ6.5CAHM3_A/I meet UL 497B recognition, and what does that mean for system certification?
Yes, SMBJ6.5CAHM3_A/I carries Underwriters Laboratories recognition QVGQ2 under UL 497B for both unidirectional and bidirectional protectors (file E136766). This means the device has been independently evaluated for surge suppression performance, flammability (UL 94 V-0 molding compound), and construction integrity - reducing validation effort for end-equipment safety certifications in industrial and telecom applications. System designers may cite SMBJ6.5CAHM3_A/I's UL file number directly in their technical documentation.
SMBJ6.5CAHM3_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):
- 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/I FAQ
1.How can I place an order for SMBJ6.5CAHM3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ6.5CAHM3_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 SMBJ6.5CAHM3_A/I reliable?
The price and inventory of SMBJ6.5CAHM3_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 SMBJ6.5CAHM3_A/I is usually 5 days.
3.What payment methods are accepted for SMBJ6.5CAHM3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ6.5CAHM3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ6.5CAHM3_A/I?
SMBJ6.5CAHM3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ6.5CAHM3_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 SMBJ6.5CAHM3_A/I?
For technical support, including SMBJ6.5CAHM3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ6.5CAHM3_A/I requirements.
6.How does Aetrix verify that SMBJ6.5CAHM3_A/I is sourced from the original manufacturer or authorized distributors?
All SMBJ6.5CAHM3_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 SMBJ6.5CAHM3_A/I meets industry standards.
7.What is the process for return or replacement of SMBJ6.5CAHM3_A/I?
All SMBJ6.5CAHM3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ6.5CAHM3_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 SMBJ6.5CAHM3_A/I part is unused and in its original packaging.
Return procedure for SMBJ6.5CAHM3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ6.5CAHM3_A/I Tags
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DESD3V3E1BL-7B
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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