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Vishay General Semiconductor - Diodes Division SMB8J6.5CAHE3_A/H
- Part No.:
- SMB8J6.5CAHE3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMB8J6.5CAHE3_A/H.pdf
- Description:
- TVS DIODE 6.5VWM 11.2VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:6,438
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Product details
Overview
SMB8J6.5CAHE3_A/H 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 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_A/H datasheet, SMB8J6.5CAHE3_A/H pinout, SMB8J6.5CAHE3_A/H application, or SMB8J6.5CAHE3_A/H equivalent, key selection criteria include AEC-Q101 qualification, bidirectional clamping behavior, low incremental surge resistance, and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
This device operates as a voltage-clamped shunt protector: under transient overvoltage exceeding VBR, it avalanches to divert surge current away from downstream circuitry while maintaining VC ≤ 11.2 V at IPPM = 71.4 A. Its glass-passivated junction ensures stable breakdown and low leakage (<1.0 µA at VWM).
Thermally, it supports operation from –55 °C to +150 °C with RθJA = 72 °C/W and RθJL = 20 °C/W, enabling reliable performance in engine bay and industrial control environments. The HE3 suffix confirms RoHS compliance and AEC-Q101 qualification per stress test conditions including temperature cycling, HTRB, and ESD.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 6.5 V - maximum continuous reverse operating voltage before significant leakage; defines safe interface voltage for 5 V logic or sensor supply rails. |
| VBR (min/max) | 7.22 V / 7.98 V at IT = 10 mA - tight breakdown tolerance ensures predictable turn-on across production lots and temperature. |
| VC @ IPPM | 11.2 V at IPPM = 71.4 A - clamping level limits protected IC voltage stress during 800 W transients (10/1000 µs). |
| PPPM | 800 W - peak surge power handling capability for automotive load-dump and ISO 7637-2 Pulse 5a/b events. |
| ID @ VWM | <1.0 µA - ultra-low reverse leakage preserves battery life and signal integrity in always-on sensor nodes. |
| TJ max. | +150 °C - enables placement near heat sources (e.g., motor drivers, power converters) without derating. |
| AEC-Q101 | Qualified - validated for automotive applications including engine control units, ADAS sensors, and body electronics. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, bidirectional - no polarity marking; symmetrical terminals accept voltage surges from either direction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (both ends) | Surge current path | Identical terminals; bidirectional conduction allows single-component protection of AC-coupled or floating signal lines. |
| Case (body) | Thermal and mechanical interface | Plastic-molded SMB case meets UL 94 V-0; mounted on 5.0 mm × 5.0 mm copper pads for optimal thermal dissipation and surge current spreading. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including HTGB, TC, and UHAST - suitable for under-hood and safety-critical ECUs. |
| Glass-passivated junction | Ensures stable VBR over time and temperature; eliminates risk of junction degradation under repeated surge stress. |
| Low clamping ratio (VC/VBR ≈ 1.43) | Minimizes overvoltage exposure to protected ICs - critical for 3.3 V/5 V microcontrollers and CAN transceivers. |
| MSL Level 1 (260 °C peak) | Compatible with standard lead-free reflow profiles without moisture sensitivity concerns or baking requirements. |
| Matte tin-plated leads | Solderable per J-STD-002 and JESD22-B102; passes JESD201 Class 2 whisker testing for long-term interconnect reliability. |
Applications
| Automotive Sensor Interface | Industrial Digital I/O Protection |
|---|---|
Use Scenario: Protecting LIN bus transceivers and analog sensor outputs (e.g., pressure, temperature) from load dump and inductive switching noise in vehicle chassis modules. IC Role / Device Role / Timing Role: Bidirectional shunt TVS placed between signal line and ground, clamping transients within 1 ns response time. Use Value: Maintains signal integrity below 11.2 V during 800 W surges, preventing latch-up or damage to 5 V tolerant ASICs. |
Use Scenario: Safeguarding PLC digital input channels against field-wiring induced surges in factory automation cabinets. IC Role / Device Role / Timing Role: Primary overvoltage clamp on 24 V DC input lines, coordinated with upstream fusing and filtering. Use Value: Withstands repetitive 1 kV/500 A surges (IEC 61000-4-5) without parameter shift due to glass-passivated junction stability. |
| USB Port ESD Protection | DC Power Rail Clamping |
Use Scenario: Secondary-level ESD and surge suppression on USB 2.0 D+/D− lines in infotainment head units. IC Role / Device Role / Timing Role: Low-capacitance bidirectional clamp (CJ ≈ 200 pF at 0 V) placed after primary ESD array. Use Value: Limits voltage excursion to ≤11.2 V during contact discharge (IEC 61000-4-2 ±15 kV), preserving signal eye diagram. |
Use Scenario: Clamping 12 V/24 V DC power inputs in telematics modules exposed to alternator load dump (ISO 7637-2 Pulse 5a). IC Role / Device Role / Timing Role: Parallel-connected TVS absorbing up to 800 W for 1 ms, thermally coupled to PCB copper. Use Value: Prevents brownout or reset of PMICs by holding rail voltage above undervoltage lockout threshold during surge. |
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/H | Same SMB package and VWM/VBR/VC specs, but rated for 600 W PPPM (vs. 800 W); lower IPPM = 53.5 A. | Limited to lower-energy transients (e.g., IEC 61000-4-4 EFT), not recommended for ISO 7637-2 Pulse 5a. | Select SMB8J6.5CAHE3_A/H when full 800 W surge margin is required for automotive power-line protection. |
| SMCJ6.5CAHE3_A/H | Same electrical specs but in larger SMC (DO-214AB) package; higher thermal mass yields RθJA = 35 °C/W vs. 72 °C/W. | Better suited for high-duty-cycle or high-ambient-temperature environments where SMB thermal limits may be exceeded. | Choose SMB8J6.5CAHE3_A/H for space-constrained layouts; choose SMCJ6.5CAHE3_A/H when board area permits and thermal headroom is critical. |
Compared with SMBJ6.5CAHE3_A/H and SMCJ6.5CAHE3_A/H, SMB8J6.5CAHE3_A/H delivers the highest power density (800 W in SMB) and AEC-Q101 validation for compact automotive and industrial designs requiring robust bidirectional clamping without footprint penalty.
Availability
SMB8J6.5CAHE3_A/H is available at Aetrix Electronics and suitable for automotive sensor protection, industrial I/O hardening, and DC power rail clamping requiring stable component supply, AEC-Q101 traceability, and RoHS-compliant manufacturing.
Supply support for SMB8J6.5CAHE3_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, MOSFETs, optoelectronics, and passive components with emphasis on reliability and application-specific performance.
The SMB8J series is part of Vishay's TRANSZORB® TVS platform, engineered specifically for high-power-density, AEC-Q101-compliant transient suppression in automotive and harsh-environment industrial systems.
FAQ
What is the clamping voltage of SMB8J6.5CAHE3_A/H at its rated peak pulse current?
The SMB8J6.5CAHE3_A/H has a maximum clamping voltage (VC) of 11.2 V when subjected to its peak pulse current (IPPM) of 71.4 A using a 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and ensures downstream ICs remain within safe operating voltage limits during surge events. The SMB8J6.5CAHE3_A/H achieves this with low incremental surge resistance inherent to its glass-passivated junction design.
Is SMB8J6.5CAHE3_A/H suitable for automotive applications?
Yes, SMB8J6.5CAHE3_A/H is AEC-Q101 qualified and explicitly intended for automotive use, including engine control, ADAS sensors, and body electronics. Its qualification covers temperature cycling, high-temperature reverse bias, and unbiased highly accelerated stress testing. The HE3 suffix denotes RoHS compliance and automotive-grade screening - making SMB8J6.5CAHE3_A/H appropriate for under-hood and safety-relevant subsystems.
How does SMB8J6.5CAHE3_A/H differ from unidirectional variants like SMB10J6.5AHE3_A/H?
SMB8J6.5CAHE3_A/H is bidirectional with symmetrical breakdown in both polarities, while SMB10J6.5AHE3_A/H is unidirectional and conducts only in reverse bias. The "C" in SMB8J6.5CAHE3_A/H denotes bidirectionality; it lacks a cathode band and supports AC-coupled or floating signal lines. SMB8J6.5CAHE3_A/H also has higher IPPM (71.4 A) than SMB10J6.5AHE3_A/H (89.3 A) but lower PPPM (800 W vs. 1000 W) due to different surge waveform ratings.
What is the thermal resistance of SMB8J6.5CAHE3_A/H, and how does it affect layout?
SMB8J6.5CAHE3_A/H has a typical junction-to-ambient thermal resistance (RθJA) of 72 °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 Vishay spec; reducing pad size increases thermal impedance and risks exceeding TJ max. of +150 °C during repeated surges. Layout must maintain full copper exposure under both terminals to sustain SMB8J6.5CAHE3_A/H's 800 W rating.
Does SMB8J6.5CAHE3_A/H require special handling or moisture sensitivity precautions?
No - SMB8J6.5CAHE3_A/H is rated MSL Level 1 per J-STD-020, meaning it can be exposed indefinitely to ambient conditions and withstands lead-free reflow peak temperatures up to 260 °C without baking. Its matte tin-plated leads comply with J-STD-002 and JESD22-B102, and it passes JESD201 Class 2 whisker testing. These attributes eliminate moisture-related assembly risks and simplify SMB8J6.5CAHE3_A/H integration into high-volume SMT lines.
SMB8J6.5CAHE3_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):
- 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_A/H FAQ
1.How can I place an order for SMB8J6.5CAHE3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMB8J6.5CAHE3_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 SMB8J6.5CAHE3_A/H reliable?
The price and inventory of SMB8J6.5CAHE3_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 SMB8J6.5CAHE3_A/H is usually 5 days.
3.What payment methods are accepted for SMB8J6.5CAHE3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMB8J6.5CAHE3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMB8J6.5CAHE3_A/H?
SMB8J6.5CAHE3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMB8J6.5CAHE3_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 SMB8J6.5CAHE3_A/H?
For technical support, including SMB8J6.5CAHE3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMB8J6.5CAHE3_A/H requirements.
6.How does Aetrix verify that SMB8J6.5CAHE3_A/H is sourced from the original manufacturer or authorized distributors?
All SMB8J6.5CAHE3_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 SMB8J6.5CAHE3_A/H meets industry standards.
7.What is the process for return or replacement of SMB8J6.5CAHE3_A/H?
All SMB8J6.5CAHE3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with SMB8J6.5CAHE3_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 SMB8J6.5CAHE3_A/H part is unused and in its original packaging.
Return procedure for SMB8J6.5CAHE3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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