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Vishay General Semiconductor - Diodes Division SMBJ6.5AHE3_A/H
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- Part No.:
- SMBJ6.5AHE3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ6.5AHE3_A/H.pdf
- Description:
- TVS DIODE 6.5VWM 11.2VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:3,175
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Product details
Overview
SMBJ6.5AHE3_A/H from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in the SMB (DO-214AA) package, designed for robust overvoltage protection of sensitive electronics. 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 53.6 A peak pulse current (IPPM), and 600 W peak pulse power (PPPM) with 10/1000 µs waveform - deployed on power rails and signal lines in automotive ECUs and industrial sensor interfaces.
For engineers reviewing the SMBJ6.5AHE3_A/H datasheet, SMBJ6.5AHE3_A/H pinout, SMBJ6.5AHE3_A/H application, or SMBJ6.5AHE3_A/H equivalent, key selection criteria include its AEC-Q101 qualification, low clamping ratio (VC/VBR ≈ 1.47), 1.0 µA max reverse leakage at VWM, 150 °C junction temperature rating, and compatibility with automated SMT assembly on standard PCB pad layouts.
Technical Context
This unidirectional TVS diode operates as a voltage-clamped shunt protector: under normal conditions it presents high impedance (>1 MΩ) below 6.5 V, then rapidly transitions to low-impedance conduction when transients exceed its breakdown threshold. Its glass-passivated junction ensures stable VBR tolerance and long-term reliability under repetitive surge stress.
The device complies with IEC 61000-4-2 (ESD), IEC 61000-4-4 (EFT), and ISO 7637-2 (automotive load dump) immunity requirements when used with appropriate series impedance. Its 100 °C/W junction-to-ambient thermal resistance requires minimum 5.0 mm × 5.0 mm copper pads per terminal for full 600 W pulse handling capability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 6.5 V - Maximum continuous reverse operating voltage before significant leakage; defines safe operating margin for 5 V rail protection. |
| VBR (Breakdown Voltage) | 7.22–7.98 V at 10 mA - Tight 10.5% tolerance window ensures predictable turn-on during transients without false triggering. |
| VC (Clamping Voltage) | 11.2 V at IPPM = 53.6 A - Limits downstream voltage stress to <11.2 V during 600 W surge, protecting 12 V logic and analog ICs. |
| PPPM (Peak Pulse Power) | 600 W with 10/1000 µs waveform - Sustains high-energy surges typical of inductive switching and lightning-induced coupling. |
| ID (Reverse Leakage) | 1.0 µA max at VWM - Negligible standby current draw; avoids loading low-power sensor circuits or battery-backed systems. |
| TJ max. | 150 °C - Enables operation in under-hood automotive environments and sealed industrial enclosures without derating. |
| AEC-Q101 Qualified | Yes - Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per JESD22 standards. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, molded plastic case with matte tin-plated leads; polarity indicated by cathode band (cathode = banded end).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side connection point | Connected to circuit ground or return path; completes clamping loop during transient events. |
| Cathode | High-side connection point | Connected to protected line (e.g., 5 V rail or CAN_H); conducts surge current to ground when V > VBR. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 µs) | Handles high-energy transients from motor drivers and relay coils without degradation over 1000+ pulses. |
| Low clamping voltage (VC = 11.2 V) | Provides tighter voltage limiting than generic Zener-based protectors, reducing risk of latch-up in downstream CMOS ICs. |
| AEC-Q101 qualified variant | Meets automotive reliability requirements for engine control, body electronics, and ADAS sensor modules. |
| MSL Level 1 (260 °C reflow) | Compatible with standard lead-free SMT reflow profiles without moisture sensitivity concerns or baking requirements. |
| Glass passivated junction | Ensures stable electrical parameters across temperature (-55 °C to +150 °C) and lifetime, minimizing parameter drift. |
Applications
| Automotive Body Control Module (BCM) | Industrial RS-485 Sensor Interface |
|---|---|
Use Scenario: Protecting microcontroller I/O pins and LIN bus transceivers from load-dump and jump-start transients in vehicle door modules. IC Role / Device Role / Timing Role: Unidirectional shunt TVS placed between LIN line and chassis ground, clamping spikes within 1 ns. Use Value: Prevents permanent damage to LIN transceivers during 12 V system faults while maintaining <1 µA leakage during sleep mode. |
Use Scenario: Safeguarding RS-485 transceivers on factory-floor sensor nodes exposed to EFT bursts from nearby motor drives. IC Role / Device Role / Timing Role: Bidirectional-capable unidirectional TVS (used with complementary pair) on differential bus lines. Use Value: Limits common-mode surge voltage to <11.2 V, preserving signal integrity and preventing receiver saturation during 4 kV EFT events. |
| Consumer Appliance Motor Drive | Medical Patient Monitor Power Input |
Use Scenario: Suppressing inductive kickback from brushed DC motors in smart home vacuum cleaners and HVAC actuators. IC Role / Device Role / Timing Role: Mounted across motor terminals or MOSFET drain-source to clamp flyback energy. Use Value: Absorbs 600 W pulses without failure, enabling use of lower-cost 20 V MOSFETs instead of 30 V+ rated devices. |
Use Scenario: Protecting isolated DC-DC converter inputs in portable patient monitors against hospital-grade power line surges. IC Role / Device Role / Timing Role: Primary-stage TVS on 24 V input rail upstream of EMI filter and converter primary. Use Value: Withstands 10/1000 µs surges up to 600 W while maintaining <1 µA leakage, ensuring no impact on battery runtime or isolation integrity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ6.5A-E3/52 | Commercial-grade (non-AEC-Q101), same VWM/VBR/VC/PPPM specs, RoHS-compliant but not automotive-qualified. | Limited to consumer, industrial, and telecom applications where automotive reliability certification is not required. | Select when cost sensitivity outweighs need for AEC-Q101 validation and environmental stress testing. |
| SAC5.0 | Lower PPPM (400 W), higher VC (14.5 V at 25 A), smaller SOD-123 package, no AEC-Q101 qualification. | Suitable only for low-energy transients; insufficient for ISO 7637-2 Pulse 5a/b load dump protection. | Choose only for space-constrained designs with sub-400 W surge requirements and non-automotive use cases. |
Compared with SMBJ6.5AHE3_A/H, SMBJ6.5A-E3/52 offers identical electrical performance at lower cost but lacks automotive qualification, while SAC5.0 sacrifices surge capacity and clamping performance for footprint reduction - making SMBJ6.5AHE3_A/H the optimal choice for AEC-Q101–mandated 12 V system protection.
Availability
SMBJ6.5AHE3_A/H is available at Aetrix Electronics and suitable for automotive electronics, industrial sensor interfaces, and medical power supply protection requiring stable component supply, long-term lifecycle support, and traceable AEC-Q101–compliant sourcing.
Supply support for SMBJ6.5AHE3_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, rectifiers, TVS devices, and optoelectronics with emphasis on reliability, efficiency, and application-specific optimization.
The SMBJ series was engineered for high-reliability transient suppression in harsh environments - particularly targeting automotive, industrial, and medical systems where consistent clamping behavior and long-term stability under thermal and surge stress are critical.
FAQ
What is the maximum clamping voltage of SMBJ6.5AHE3_A/H at its rated peak pulse current?
The SMBJ6.5AHE3_A/H has a maximum clamping voltage (VC) of 11.2 V at its specified peak pulse current (IPPM) of 53.6 A using the 10/1000 µs waveform. This value is measured under standardized test conditions per IEC 61000-4-5 and ensures predictable overvoltage limiting for downstream components. The SMBJ6.5AHE3_A/H maintains this clamping performance across its full operating temperature range from -55 °C to +150 °C.
Is SMBJ6.5AHE3_A/H suitable for automotive applications?
Yes, SMBJ6.5AHE3_A/H is AEC-Q101 qualified and specifically designed for automotive use, including body electronics, infotainment systems, and ADAS sensor modules. Its qualification covers temperature cycling, highly accelerated life testing (HALT), and ESD robustness per JESD22 standards. The "HE3" suffix denotes RoHS-compliant and AEC-Q101–qualified construction, making SMBJ6.5AHE3_A/H appropriate for under-hood and cabin-mounted ECUs requiring certified reliability.
What is the reverse leakage current specification for SMBJ6.5AHE3_A/H at its stand-off voltage?
The SMBJ6.5AHE3_A/H specifies a maximum reverse leakage current (ID) of 1.0 µA at its 6.5 V stand-off voltage (VWM) and 25 °C ambient temperature. This ultra-low leakage ensures minimal power loss in always-on circuits such as battery-backed real-time clocks or low-power sensor nodes. Leakage remains below 5 µA up to 125 °C, supporting reliable operation in thermally demanding environments.
Does SMBJ6.5AHE3_A/H have a defined polarity marking, and how is it identified?
Yes, SMBJ6.5AHE3_A/H is a unidirectional TVS diode with clear polarity identification: the cathode is marked by a visible band on the SMB (DO-214AA) package body. During PCB layout, the banded end must be connected to the line being protected (e.g., 5 V rail), while the anode connects to ground. Incorrect orientation renders the device ineffective against positive transients, so proper placement is essential for functional protection.
What is the thermal resistance and recommended PCB layout for SMBJ6.5AHE3_A/H to achieve full 600 W pulse rating?
The SMBJ6.5AHE3_A/H has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W, achievable only when mounted on the minimum recommended pad layout: 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal, with internal ground planes. Without this layout, pulse power derating applies - e.g., at RθJA = 150 °C/W, the usable PPPM drops to ~400 W. The SMBJ6.5AHE3_A/H datasheet provides exact pad dimensions and thermal guidelines for optimal surge handling.
SMBJ6.5AHE3_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:
- 1
- Bidirectional Channels:
- -
- 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMBJ)
SMBJ6.5AHE3_A/H FAQ
1.How can I place an order for SMBJ6.5AHE3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ6.5AHE3_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 SMBJ6.5AHE3_A/H reliable?
The price and inventory of SMBJ6.5AHE3_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 SMBJ6.5AHE3_A/H is usually 5 days.
3.What payment methods are accepted for SMBJ6.5AHE3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ6.5AHE3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ6.5AHE3_A/H?
SMBJ6.5AHE3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ6.5AHE3_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 SMBJ6.5AHE3_A/H?
For technical support, including SMBJ6.5AHE3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ6.5AHE3_A/H requirements.
6.How does Aetrix verify that SMBJ6.5AHE3_A/H is sourced from the original manufacturer or authorized distributors?
All SMBJ6.5AHE3_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 SMBJ6.5AHE3_A/H meets industry standards.
7.What is the process for return or replacement of SMBJ6.5AHE3_A/H?
All SMBJ6.5AHE3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ6.5AHE3_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 SMBJ6.5AHE3_A/H part is unused and in its original packaging.
Return procedure for SMBJ6.5AHE3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ6.5AHE3_A/H Tags
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