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Vishay General Semiconductor - Diodes Division SMB8J6.5CHE3/5B
- Part No.:
- SMB8J6.5CHE3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMB8J6.5CHE3/5B.pdf
- Description:
- TVS DIODE 6.5VWM 12.3VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:2,903
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Product details
Overview
SMB8J6.5CHE3/5B from Vishay General Semiconductor is a bi-directional transient voltage suppressor (TVS) diode in DO-214AA (SMB) package, designed for high-energy surge protection on signal and power lines. It features a 6.5 V stand-off voltage (VWM), 7.22–7.98 V breakdown voltage (VBR) at 10 mA, 11.2 V maximum clamping voltage (VC) at 1000 A peak pulse current (IPPM), and 800 W peak pulse power (PPPM) with 10/1000 µs waveform. It is AEC-Q101 qualified and used in automotive sensor interface protection.
For engineers reviewing the SMB8J6.5CHE3/5B datasheet, SMB8J6.5CHE3/5B pinout, SMB8J6.5CHE3/5B application, or SMB8J6.5CHE3/5B equivalent, key selection criteria include bi-directional clamping capability, AEC-Q101 qualification, DO-214AA thermal performance (RθJA = 72 °C/W), and compatibility with 13" tape-and-reel automated assembly.
Technical Context
This bi-directional TVS diode operates symmetrically across both polarities, enabling robust protection against voltage transients from either direction-critical for AC-coupled or differential signal lines. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (≤1.0 µA at VWM), while the low incremental surge resistance supports fast clamping response under high-current surges.
The device is rated for 150 °C maximum junction temperature and meets MSL Level 1 per J-STD-020 (260 °C peak reflow). Its thermal resistance (RθJL = 20 °C/W) enables effective heat dissipation through PCB copper pads, and its matte tin-plated leads comply with J-STD-002 and JESD 22-B102 solderability standards.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 6.5 V - Maximum continuous reverse operating voltage before clamping begins; defines safe signal swing margin. |
| VBR min/max | 7.22 V / 7.98 V at 10 mA - Tight breakdown tolerance ensures predictable turn-on during transients. |
| VC @ IPPM | 11.2 V at 1000 A - Clamping voltage limits downstream IC stress during 10/1000 µs surge events. |
| PPPM | 800 W - Peak pulse power handling capacity for standardized lightning/surge immunity testing. |
| ID @ VWM | ≤1.0 µA - Ultra-low leakage preserves signal integrity and battery life in always-on circuits. |
| TJ max | 150 °C - Enables operation in under-hood automotive environments and industrial enclosures. |
| RθJA | 72 °C/W - Thermal resistance indicates required PCB copper area (0.2" × 0.2") for safe power dissipation. |
Pinout & Package
Package: DO-214AA (SMB), surface-mount, bi-directional configuration with no polarity marking. Cathode band absent; terminals are symmetrical and interchangeable.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (1) | Bi-directional surge path terminal | Either end serves as input/output; no fixed polarity-enables placement flexibility on differential or AC lines. |
| Anode/Cathode (2) | Bi-directional surge path terminal | Paired with Terminal 1 to form symmetrical clamping path; identical electrical behavior in both directions. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, humidity bias, and mechanical shock. |
| Glass-passivated junction | Ensures long-term stability of VBR and low parametric drift over lifetime and temperature. |
| MSL Level 1 rating | Supports lead-free reflow up to 260 °C without moisture-induced popcorn failure. |
| Low clamping ratio (VC/VBR ≈ 1.4) | Minimizes overvoltage exposure to protected ICs compared to higher-ratio suppressors. |
| RoHS-compliant HE3 suffix | Meets JESD 201 Class 2 whisker resistance-critical for high-reliability automotive harnesses and connectors. |
Applications
| Automotive Sensor Interface | Industrial CAN Bus Protection |
|---|---|
Use Scenario: Protecting LIN/CAN transceiver inputs from load-dump and inductive switching spikes in engine control modules. IC Role / Device Role / Timing Role: Bi-directional TVS clamping element placed directly at connector entry point. Use Value: Limits transient voltage to ≤11.2 V during 1000 A surges, preventing damage to 5 V tolerant transceivers like TJA1042. | Use Scenario: Safeguarding differential CAN_H/CAN_L lines against ESD and ISO 7637-2 pulse 1/2a/5a surges. IC Role / Device Role / Timing Role: Symmetric clamping device bridging CAN_H and CAN_L to ground via common-mode choke. Use Value: Maintains signal integrity with <1 µA leakage at 6.5 V, avoiding bus bias shift or false dominant states. |
| Consumer USB Port ESD Protection | Telecom DSL Line Surge Suppression |
Use Scenario: Shielding USB 2.0 D+/D− lines from human-body-model (HBM) ESD events up to ±15 kV. IC Role / Device Role / Timing Role: Low-capacitance bi-directional clamp placed inline between connector and USB PHY. Use Value: Responds within nanoseconds to clamp ESD pulses while adding negligible signal distortion due to DO-214AA geometry. | Use Scenario: Front-end protection of ADSL/VDSL line drivers exposed to lightning-induced surges on twisted-pair telecom lines. IC Role / Device Role / Timing Role: Primary surge diverter mounted at line entry, upstream of isolation transformer and line driver IC. Use Value: Handles 800 W peak pulse energy without degradation, meeting ITU-T K.20/K.21 surge immunity requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bi-directional TVS protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMB8J6.5CA-E3/5B | No AEC-Q101 qualification; commercial-grade HE3 suffix replaced with standard E3. | Suitable for non-automotive industrial or consumer use where automotive qualification is not mandated. | Select when cost sensitivity outweighs automotive reliability requirements and JEDEC whisker class 2 is unnecessary. |
| SMCJ6.5CAHE3/5B | DO-214AB (SMC) package-larger footprint, higher PPPM (1500 W), same VWM/VBR/VC specs. | Better thermal performance (RθJA = 35 °C/W) but requires more PCB area; preferred for high-power industrial surge zones. | Choose when system-level surge tests exceed 800 W or sustained ambient temperatures exceed 105 °C. |
Compared with SMB8J6.5CHE3/5B, SMB8J6.5CA-E3/5B offers identical electrical protection at lower qualification grade, while SMCJ6.5CAHE3/5B trades board space for higher surge margin and improved thermal derating-enabling design flexibility across automotive, industrial, and telecom platforms.
Availability
SMB8J6.5CHE3/5B is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial CAN bus nodes, consumer USB port protection, and telecom DSL line surge suppression requiring stable component supply and AEC-Q101 compliance.
Supply support for SMB8J6.5CHE3/5B 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, MOSFETs, optoelectronics, and passive components with emphasis on reliability and automotive-grade validation.
The SMB8J series belongs to Vishay's TRANSZORB® family of high-power-density TVS diodes, engineered specifically for AEC-Q101-compliant transient suppression in harsh automotive and industrial environments.
FAQ
What is the clamping voltage of SMB8J6.5CHE3/5B at its rated peak pulse current?
The SMB8J6.5CHE3/5B has a maximum clamping voltage (VC) of 11.2 V at 1000 A peak pulse current (IPPM) with a 10/1000 µs waveform. This value is measured under standardized surge conditions and defines the upper voltage limit imposed on protected circuitry during transient events. The SMB8J6.5CHE3/5B maintains this clamping performance consistently across its qualified operating temperature range.
Is SMB8J6.5CHE3/5B suitable for automotive applications?
Yes, SMB8J6.5CHE3/5B is AEC-Q101 qualified and explicitly rated for automotive use. Its construction-including glass-passivated junction, MSL Level 1 reflow compatibility, JESD 201 Class 2 whisker resistance, and 150 °C maximum junction temperature-meets stringent automotive reliability requirements. The SMB8J6.5CHE3/5B is commonly deployed in engine control units, body electronics, and ADAS sensor interfaces.
How does the bi-directional configuration of SMB8J6.5CHE3/5B affect PCB layout?
The SMB8J6.5CHE3/5B has no polarity marking and functions identically in both directions, eliminating orientation constraints during placement. This simplifies automated assembly and allows flexible routing on differential or AC-coupled lines such as CAN, LIN, or USB. The SMB8J6.5CHE3/5B requires symmetric 0.2" × 0.2" copper pads per terminal for optimal thermal performance and surge current handling.
What is the difference between the HE3 and E3 suffixes in Vishay SMB8J part numbers?
The HE3 suffix denotes RoHS-compliant, AEC-Q101-qualified devices with JESD 201 Class 2 whisker resistance, whereas E3 indicates RoHS-compliant commercial-grade parts without automotive qualification or enhanced whisker testing. For SMB8J6.5CHE3/5B, the HE3 designation confirms full automotive suitability-making it distinct from the functionally similar but non-qualified SMB8J6.5CA-E3/5B.
Can SMB8J6.5CHE3/5B be used in place of a unidirectional TVS diode?
No-SMB8J6.5CHE3/5B is strictly bi-directional and lacks anode/cathode asymmetry; it cannot replace unidirectional TVS diodes in DC-biased applications where forward conduction must be blocked. Attempting substitution may cause unintended conduction or failure to clamp correctly. Always verify polarity requirements: SMB8J6.5CHE3/5B is intended for AC, differential, or floating-line protection-not DC power rail clamping.
SMB8J6.5CHE3/5B 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):
- 65A
- Power - Peak Pulse:
- 800W
- 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 (SMB)
SMB8J6.5CHE3/5B FAQ
1.How can I place an order for SMB8J6.5CHE3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SMB8J6.5CHE3/5B 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 SMB8J6.5CHE3/5B reliable?
The price and inventory of SMB8J6.5CHE3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMB8J6.5CHE3/5B is usually 5 days.
3.What payment methods are accepted for SMB8J6.5CHE3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMB8J6.5CHE3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMB8J6.5CHE3/5B?
SMB8J6.5CHE3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMB8J6.5CHE3/5B 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 SMB8J6.5CHE3/5B?
For technical support, including SMB8J6.5CHE3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMB8J6.5CHE3/5B requirements.
6.How does Aetrix verify that SMB8J6.5CHE3/5B is sourced from the original manufacturer or authorized distributors?
All SMB8J6.5CHE3/5B 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 SMB8J6.5CHE3/5B meets industry standards.
7.What is the process for return or replacement of SMB8J6.5CHE3/5B?
All SMB8J6.5CHE3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SMB8J6.5CHE3/5B, 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 SMB8J6.5CHE3/5B part is unused and in its original packaging.
Return procedure for SMB8J6.5CHE3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMB8J6.5CHE3/5B 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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D5V0P1B2LP-7B
Diodes Incorporated
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Diodes Incorporated
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DESD5V0U1BB-7
Diodes Incorporated
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D12V0L1B2LP-7B
Diodes Incorporated
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PESD2V0Y1BSFYL
Nexperia USA Inc.
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DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
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Diodes Incorporated
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