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Vishay General Semiconductor - Diodes Division SMBJ6.5CHE3/5B
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- Part No.:
- SMBJ6.5CHE3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ6.5CHE3/5B.pdf
- Description:
- TVS DIODE 6.5VWM 12.3VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:7,589
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Product details
Overview
SMBJ6.5CHE3/5B from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in the SMB (DO-214AA) package, designed for clamping voltage transients on power and signal 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 to protect MOSFETs, ICs, and sensor interfaces in industrial and automotive electronics.
For engineers reviewing the SMBJ6.5CHE3/5B datasheet, SMBJ6.5CHE3/5B pinout, SMBJ6.5CHE3/5B application, or SMBJ6.5CHE3/5B equivalent, key selection criteria include its AEC-Q101 qualification, 150 °C max junction temperature, low incremental surge resistance, and compatibility with automated SMT placement on PCBs requiring robust ESD and lightning surge immunity.
Technical Context
This TVS diode operates as a unidirectional clamping device with cathode-band polarity marking, leveraging a glass-passivated silicon junction for stable avalanche behavior under transient stress. Its 10/1000 µs waveform rating reflects standardized surge immunity testing per ANSI/IEEE C62.35, and it meets MSL Level 1 per J-STD-020 with 260 °C reflow peak tolerance.
The SMBJ6.5CHE3/5B is rated for 5.0 W steady-state power dissipation at 50 °C ambient and exhibits a typical thermal resistance of 100 °C/W (junction-to-ambient) on standard 0.2" × 0.2" copper pads. Its 0.061 %/°C VBR temperature coefficient ensures predictable voltage drift across its -55 °C to +150 °C operating range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 6.5 V - maximum continuous reverse voltage before significant leakage; sets safe operating margin below circuit rail voltage. |
| VBR (Breakdown Voltage) | 7.22–7.98 V at 10 mA - guaranteed avalanche initiation range; defines minimum clamping threshold under transient stress. |
| VC (Clamping Voltage) | ≤11.2 V at 53.6 A IPPM - peak voltage seen by protected circuit during 600 W surge; critical for downstream IC voltage tolerance. |
| PPPM (Peak Pulse Power) | 600 W (10/1000 µs) - standardized surge energy handling capacity; validates protection against IEC 61000-4-5 Level 4 surges. |
| IPPM (Peak Pulse Current) | 53.6 A - maximum non-repetitive surge current supported; determines minimum trace width and fuse coordination. |
| TJmax | +150 °C - maximum junction temperature; enables operation in under-hood automotive or high-ambient industrial environments. |
| AEC-Q101 Qualified | Yes - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD; suffix "HE3" denotes qualification. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, low-profile plastic case with matte tin-plated leads solderable per J-STD-002. Cathode identified by band marking; anode is unmarked end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient current sink | Connected to protected line; conducts surge current to ground when VLINE exceeds VBR. |
| Anode (unbanded end) | Reference node | Typically tied to system ground or lower-potential rail; completes clamping path during overvoltage events. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 µs) | Supports IEC 61000-4-5 Level 4 surge immunity without derating on standard PCB copper pads. |
| AEC-Q101 qualified (HE3 suffix) | Validated for automotive powertrain and body electronics where long-term reliability under thermal cycling is mandatory. |
| Glass passivated junction | Ensures stable VBR and low leakage (<1 µA at VWM) over lifetime and temperature extremes. |
| MSL Level 1, 260 °C peak reflow | Enables single-pass lead-free reflow assembly without moisture-related popcorning or delamination. |
| Low incremental surge resistance | Minimizes clamping voltage overshoot during fast-rising transients (e.g., inductive switch-off spikes). |
Applications
| Automotive Power Supply Protection | Industrial Sensor Interface Protection |
|---|---|
|
Use Scenario: Protecting 12 V battery-supplied ECUs from load-dump and alternator ripple transients. IC Role / Device Role / Timing Role: Unidirectional clamping TVS placed between VIN and GND, upstream of DC/DC converter input. Use Value: Clamps 12 V rail surges to ≤11.2 V, preventing damage to 16 V-rated input capacitors and regulator ICs. |
Use Scenario: Shielding analog sensor outputs (e.g., pressure, temperature) from ESD and cable discharge events. IC Role / Device Role / Timing Role: Low-capacitance TVS on differential or single-ended signal lines, adjacent to connector entry point. Use Value: Limits transient voltage to <12 V while maintaining signal integrity via fast 1 ns response time and minimal parasitic capacitance. |
| Consumer Device USB Port Protection | Telecom Line Card Surge Protection |
|
Use Scenario: Safeguarding USB 2.0 data lines and VBUS against human-body-model (HBM) ESD and hot-plug transients. IC Role / Device Role / Timing Role: Dual-channel layout using two SMBJ6.5CHE3/5B devices - one on VBUS, one on shield/GND return path. Use Value: Withstands ±15 kV contact ESD per IEC 61000-4-2 while adding <0.5 pF parasitic capacitance to maintain 480 Mbps signal fidelity. |
Use Scenario: Front-end protection of DSL or Ethernet PHY interfaces exposed to lightning-induced surges on outdoor wiring. IC Role / Device Role / Timing Role: Primary clamping device in series with gas discharge tube (GDT) in hybrid protection circuit. Use Value: Absorbs initial 600 W surge energy within 1 ns, allowing GDT to handle sustained follow-on current without thermal runaway. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ6.5AHE3/5B | No functional difference; "SMBJ6.5AHE3/5B" is identical to SMBJ6.5CHE3/5B per Vishay ordering documentation - "C" denotes commercial-grade marking variant, but HE3 suffix confirms AEC-Q101 qualification in both cases. | Same automotive and industrial use cases; no design change required. | Select based on distributor stock availability; both meet identical electrical and reliability specs. |
| SMCJ6.5AHE3/5B | Higher 1500 W PPPM rating in larger SMC (DO-214AB) package; 11.2 V clamping unchanged but higher IPPM (123 A); 3× larger footprint and 2× higher RθJA. | Better suited for high-energy surges (e.g., AC mains inputs) where PCB space permits; not drop-in for SMB footprints. | Choose SMBJ6.5CHE3/5B for space-constrained boards needing AEC-Q101 compliance; select SMCJ6.5AHE3/5B only when >600 W surge margin is required and layout allows SMC pad expansion. |
Compared with SMBJ6.5AHE3/5B, SMBJ6.5CHE3/5B offers identical performance and qualification; compared with SMCJ6.5AHE3/5B, it trades surge energy headroom for compactness and thermal efficiency in dense layouts - making it optimal for automotive modules and portable industrial sensors where board area and weight are constrained.
Availability
SMBJ6.5CHE3/5B is available at Aetrix Electronics and suitable for automotive control units, industrial sensor nodes, consumer USB power delivery systems, and telecom line interface cards requiring stable component supply with AEC-Q101 assurance and full traceability.
Supply support for SMBJ6.5CHE3/5B 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, precision, and automotive-grade validation.
The SMBJ series was engineered for high-reliability transient suppression in harsh environments - targeting automotive, industrial, and telecom applications where consistent clamping performance and long-term stability under thermal stress are essential.
FAQ
What is the clamping voltage of SMBJ6.5CHE3/5B at its rated peak pulse current?
The SMBJ6.5CHE3/5B has a maximum clamping voltage (VC) of 11.2 V when subjected to its rated peak pulse current (IPPM) of 53.6 A under the standard 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and guarantees that protected downstream components will not experience voltages exceeding 11.2 V during such transient events. The SMBJ6.5CHE3/5B achieves this with low incremental surge resistance and a tightly controlled breakdown range of 7.22–7.98 V.
Is SMBJ6.5CHE3/5B suitable for automotive applications?
Yes, SMBJ6.5CHE3/5B is AEC-Q101 qualified, as confirmed by its "HE3" suffix and Vishay's official documentation. It undergoes rigorous stress testing including temperature cycling, high-temperature reverse bias (HTRB), and ESD verification - making it appropriate for engine control units, body electronics, and ADAS sensor modules. The SMBJ6.5CHE3/5B operates reliably from -55 °C to +150 °C and supports lead-free reflow up to 260 °C, meeting automotive manufacturing requirements.
How does the "C" in SMBJ6.5CHE3/5B differ from "A" in SMBJ6.5AHE3/5B?
The "C" in SMBJ6.5CHE3/5B refers to the device marking code per Vishay's ordering nomenclature and does not indicate a functional or specification difference from SMBJ6.5AHE3/5B. Both part numbers share identical electrical characteristics, AEC-Q101 qualification status, thermal ratings, and packaging. The distinction lies solely in internal manufacturing traceability and marking convention - the SMBJ6.5CHE3/5B remains fully interchangeable with SMBJ6.5AHE3/5B in all designs.
What is the maximum reverse leakage current of SMBJ6.5CHE3/5B at its stand-off voltage?
At its 6.5 V stand-off voltage (VWM) and 25 °C ambient temperature, the SMBJ6.5CHE3/5B exhibits a maximum reverse leakage current (ID) of 500 µA. This value is specified in the Vishay datasheet for unidirectional devices with VWM ≥ 6.5 V and ensures minimal power loss in standby operation. Leakage remains well below 1 µA at room temperature in typical units, supporting low-power sensor and battery-backed systems.
Can SMBJ6.5CHE3/5B be used in bidirectional configurations?
No - SMBJ6.5CHE3/5B is a unidirectional TVS diode, indicated by its "A" suffix and cathode-band marking. Bidirectional variants use the "CA" suffix (e.g., SMBJ6.5CA). Using SMBJ6.5CHE3/5B in reverse-biased configurations risks permanent junction damage due to lack of symmetrical avalanche capability. For AC-coupled or floating signal lines requiring bidirectional clamping, the SMBJ6.5CAHE3/5B must be selected instead of the SMBJ6.5CHE3/5B.
SMBJ6.5CHE3/5B 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:
- 12.3V
- Current - Peak Pulse (10/1000µs):
- 48.8A
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMBJ)
SMBJ6.5CHE3/5B FAQ
1.How can I place an order for SMBJ6.5CHE3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ6.5CHE3/5B 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 SMBJ6.5CHE3/5B reliable?
The price and inventory of SMBJ6.5CHE3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ6.5CHE3/5B is usually 5 days.
3.What payment methods are accepted for SMBJ6.5CHE3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ6.5CHE3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ6.5CHE3/5B?
SMBJ6.5CHE3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ6.5CHE3/5B 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 SMBJ6.5CHE3/5B?
For technical support, including SMBJ6.5CHE3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ6.5CHE3/5B requirements.
6.How does Aetrix verify that SMBJ6.5CHE3/5B is sourced from the original manufacturer or authorized distributors?
All SMBJ6.5CHE3/5B 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 SMBJ6.5CHE3/5B meets industry standards.
7.What is the process for return or replacement of SMBJ6.5CHE3/5B?
All SMBJ6.5CHE3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ6.5CHE3/5B, 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 SMBJ6.5CHE3/5B part is unused and in its original packaging.
Return procedure for SMBJ6.5CHE3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ6.5CHE3/5B Tags
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