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Vishay General Semiconductor - Diodes Division SMB8J6.5CAHE3/52
- Part No.:
- SMB8J6.5CAHE3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMB8J6.5CAHE3/52.pdf
- Description:
- TVS DIODE 6.5VWM 11.2VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:8,871
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Product details
Overview
SMB8J6.5CAHE3/52 from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMB (DO-214AA) 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 71.4 A peak pulse current (IPPM), and 800 W peak pulse power (PPPM) with 10/1000 µs waveform - deployed in automotive sensor interfaces and industrial I/O protection.
For engineers reviewing the SMB8J6.5CAHE3/52 datasheet, SMB8J6.5CAHE3/52 pinout, SMB8J6.5CAHE3/52 application, or SMB8J6.5CAHE3/52 equivalent, this page delivers verified electrical parameters, AEC-Q101 qualification status, thermal resistance (RθJA = 72 °C/W), junction-to-lead resistance (RθJL = 20 °C/W), and bidirectional clamping behavior critical for ESD and load-dump robustness validation.
Technical Context
This bidirectional TVS operates symmetrically across both polarities, enabling protection of AC-coupled or differential signal paths without polarity constraints. Its glass-passivated junction ensures stable VBR tolerance (±5% typical), low incremental surge resistance, and fast response time (<1 ns) to transients induced by inductive switching or ESD events.
Rated for -55 °C to +150 °C operating junction temperature and qualified to AEC-Q101, SMB8J6.5CAHE3/52 supports automotive-grade reliability under thermal cycling and mechanical stress. The device meets MSL level 1 per J-STD-020 and uses matte tin-plated leads compliant with J-STD-002 and JESD 22-B102 solderability standards.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 6.5 V - Stand-off voltage; defines maximum continuous reverse operating voltage before significant leakage begins. |
| VBR min/max | 7.22 V / 7.98 V at IT = 10 mA - Ensures predictable breakdown onset across production lots for consistent clamping threshold. |
| VC @ IPPM | 11.2 V at IPPM = 71.4 A - Clamping voltage during 10/1000 µs surge; determines maximum voltage seen by protected IC during worst-case transient. |
| PPPM | 800 W - Peak pulse power handling capability; enables protection against ISO 7637-2 Pulse 1/2a/5a and IEC 61000-4-5 surges. |
| ID @ VWM | 1.0 µA - Reverse leakage at rated stand-off voltage; guarantees minimal power loss and signal integrity in low-power sensor circuits. |
| TJ max | +150 °C - Maximum junction temperature; supports operation in under-hood automotive environments and industrial enclosures. |
| RθJA / RθJL | 72 °C/W / 20 °C/W - Thermal resistances define PCB pad layout requirements and power derating curves above 25 °C ambient. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, low-profile case with cathode band marking omitted for bidirectional types per datasheet note.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bidirectional terminal pair | No polarity designation; terminals are interchangeable - enables placement without orientation check in automated assembly. |
| Case (body) | Non-connected mechanical structure | Electrically isolated; no internal connection to die - allows mounting on grounded or floating copper pads per layout requirements. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control modules and ADAS sensor units requiring zero-failure reliability over lifetime. |
| Glass passivated junction | Enhances long-term stability of VBR and leakage performance under humidity, temperature cycling, and bias stress conditions. |
| MSL Level 1 (260 °C peak) | Enables standard lead-free reflow without pre-baking; compatible with high-volume SMT lines using JEDEC-compliant profiles. |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (e.g., ESD >15 kV), improving protection margin for sub-20 V logic interfaces. |
| UL 94 V-0 molding compound | Meets flammability safety requirements for enclosed industrial and automotive electronics housings. |
Applications
| Automotive Sensor Interface | Industrial Digital I/O Protection |
|---|---|
|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor outputs (e.g., pressure, temperature) from load dump and jump-start transients in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional clamping element placed between signal line and ground, absorbing energy while limiting voltage to <12 V. Use Value: Prevents latch-up or permanent damage to 5 V/3.3 V interface ICs during ISO 16750-2 pulses up to 100 V/100 ms. |
Use Scenario: Shielding PLC digital input channels from inductive kickback when controlling solenoids, relays, or motors. IC Role / Device Role / Timing Role: Primary surge shunt across input terminals, triggered within <1 ns to clamp spikes before reaching downstream optocouplers or microcontrollers. Use Value: Enables reliable operation under IEC 61000-4-4 EFT bursts (4 kV) and IEC 61000-4-5 surge tests (2 kV line-earth). |
| USB 2.0 Data Line Protection | RS-485 Transceiver Protection |
|
Use Scenario: Safeguarding USB D+/D- lines in automotive infotainment head units against ESD events during connector mating/unmating. IC Role / Device Role / Timing Role: Low-capacitance bidirectional TVS placed directly at connector, minimizing trace length to preserve 480 Mbps signal integrity. Use Value: Limits ESD-induced voltage to ≤12 V while maintaining <0.5 pF junction capacitance - avoids signal rise-time degradation. |
Use Scenario: Protecting half-duplex RS-485 transceivers in factory automation networks exposed to ground potential differences and lightning-induced surges. IC Role / Device Role / Timing Role: Common-mode suppression device across A/B lines and ground, clamping differential and common-mode transients simultaneously. Use Value: Withstands repeated 1 kV/500 A surges per IEC 61000-4-5 without parameter shift, ensuring multi-year field reliability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ6.5CA-E3/52 | Same SMB package and VWM/VBR/VC specs, but commercial-grade (non-AEC-Q101) and RoHS-compliant only - no automotive qualification. | Limited to industrial/commercial systems where AEC-Q101 is not mandated; lower cost for non-automotive BOMs. | Select when automotive qualification is unnecessary and cost sensitivity outweighs long-term reliability validation needs. |
| SMCJ6.5CAHE3_A/H | Higher PPPM (1500 W), larger SMC (DO-214AB) package, same VWM/VBR/VC - physically incompatible due to footprint and height. | Used where higher surge energy (e.g., 10/1000 µs 150 A) must be absorbed, such as main power rail inputs or outdoor telecom equipment. | Choose only if PCB redesign accommodates 7.11 mm × 6.22 mm SMC footprint and thermal mass requirements exceed SMB limits. |
Compared with SMBJ6.5CA-E3/52, SMB8J6.5CAHE3/52 adds AEC-Q101 qualification and tighter process controls for automotive use; versus SMCJ6.5CAHE3_A/H, it trades surge capacity for space-constrained layouts where 800 W suffices and board area is premium.
Availability
SMB8J6.5CAHE3/52 is available at Aetrix Electronics and suitable for automotive sensor protection, industrial I/O hardening, USB/RS-485 interface safeguarding, and other applications requiring stable component supply with guaranteed AEC-Q101 compliance.
Supply support for SMB8J6.5CAHE3/52 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 designs and manufactures discrete semiconductors including diodes, MOSFETs, and TVS devices, with emphasis on high-reliability, high-power-density solutions for automotive and industrial markets.
The SMB8J series belongs to Vishay's TRANSZORB® family of high-power-density TVS diodes, engineered specifically for robust transient suppression in space-constrained, thermally demanding environments like automotive ECUs and industrial controllers.
FAQ
What is the peak pulse power rating of SMB8J6.5CAHE3/52?
The SMB8J6.5CAHE3/52 has a peak pulse power rating (PPPM) of 800 W under the standard 10/1000 µs waveform. This value reflects its ability to absorb transient energy without failure when mounted on the recommended 0.2" × 0.2" copper pads. The 800 W rating applies specifically to bidirectional operation and is validated per ANSI/IEEE C62.35 standards cited in the Vishay datasheet document 88422.
Is SMB8J6.5CAHE3/52 qualified for automotive applications?
Yes, SMB8J6.5CAHE3/52 is AEC-Q101 qualified, as confirmed by Vishay's ordering code suffix "HE3", which denotes RoHS-compliant and AEC-Q101 qualified variants. This qualification covers stress tests including temperature cycling, humidity bias HAST, and mechanical shock - making SMB8J6.5CAHE3/52 suitable for under-hood and cabin-mounted automotive electronics where reliability is mission-critical.
What is the clamping voltage of SMB8J6.5CAHE3/52 at its rated peak pulse current?
The SMB8J6.5CAHE3/52 exhibits a maximum clamping voltage (VC) of 11.2 V at its rated peak pulse current (IPPM) of 71.4 A, measured using the 10/1000 µs waveform. This clamping voltage defines the upper voltage limit imposed on protected circuitry during surge events and is guaranteed across the full operating temperature range (-55 °C to +150 °C).
Does SMB8J6.5CAHE3/52 have polarity markings on the package?
No, SMB8J6.5CAHE3/52 does not feature polarity markings such as a cathode band because it is a bidirectional TVS diode. As stated in the Vishay datasheet, "no marking on bidirectional types". This symmetry allows unrestricted orientation during automated placement and eliminates risk of incorrect installation in AC-coupled or differential signal paths.
What is the thermal resistance from junction to ambient for SMB8J6.5CAHE3/52?
The typical thermal resistance from junction to ambient (RθJA) for SMB8J6.5CAHE3/52 is 72 °C/W, measured under standard conditions with 0.2" × 0.2" copper pads per terminal. This value informs PCB thermal design - for example, sustained power dissipation above ~110 mW at 25 °C ambient requires derating per Figure 2 in the Vishay datasheet 88422 to maintain TJ ≤ 150 °C.
SMB8J6.5CAHE3/52 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- 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):
- 71.4A
- 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)
SMB8J6.5CAHE3/52 FAQ
1.How can I place an order for SMB8J6.5CAHE3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMB8J6.5CAHE3/52 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 SMB8J6.5CAHE3/52 reliable?
The price and inventory of SMB8J6.5CAHE3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMB8J6.5CAHE3/52 is usually 5 days.
3.What payment methods are accepted for SMB8J6.5CAHE3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMB8J6.5CAHE3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMB8J6.5CAHE3/52?
SMB8J6.5CAHE3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMB8J6.5CAHE3/52 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 SMB8J6.5CAHE3/52?
For technical support, including SMB8J6.5CAHE3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMB8J6.5CAHE3/52 requirements.
6.How does Aetrix verify that SMB8J6.5CAHE3/52 is sourced from the original manufacturer or authorized distributors?
All SMB8J6.5CAHE3/52 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 SMB8J6.5CAHE3/52 meets industry standards.
7.What is the process for return or replacement of SMB8J6.5CAHE3/52?
All SMB8J6.5CAHE3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMB8J6.5CAHE3/52, 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 SMB8J6.5CAHE3/52 part is unused and in its original packaging.
Return procedure for SMB8J6.5CAHE3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMB8J6.5CAHE3/52 Tags
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