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Vishay General Semiconductor - Diodes Division SMA6J6.5A-E3/5A
- Part No.:
- SMA6J6.5A-E3/5A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMA6J6.5A-E3/5A.pdf
- Description:
- TVS DIODE 6.5VWM 14.5VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:6,192
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Product details
Overview
SMA6J6.5A-E3/5A from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMA (DO-214AC) package, designed for clamping voltage transients on power and signal lines. It features a 6.5 V stand-off voltage (VWM), 7.2–7.96 V breakdown voltage (VBR at 10 mA), 10.2 V maximum clamping voltage at 58.8 A (10/1000 μs), 600 W peak pulse power rating, and operates across –55 °C to +150 °C junction temperature range. It protects MOSFETs and ICs in industrial power supplies.
For engineers reviewing the SMA6J6.5A-E3/5A datasheet, SMA6J6.5A-E3/5A pinout, SMA6J6.5A-E3/5A application, or SMA6J6.5A-E3/5A equivalent, key selection criteria include clamping voltage at rated IPP, unidirectional polarity, SMA package thermal resistance (RθJA = 120 °C/W), leakage current ≤100 μA at 6.5 V, and compliance with J-STD-020 MSL level 1.
Technical Context
This TVS diode operates as a voltage-clamped crowbar device triggered above its reverse breakdown threshold. Its dynamic resistance (RD = 0.038 Ω) and low clamping ratio (VC/VBR ≈ 1.41) ensure rapid suppression of 10/1000 μs transients up to 600 W without latch-up or degradation under repetitive surges.
Designed for PCB-level protection, it relies on thermal dissipation through SMA package leads and 5.0 mm × 5.0 mm copper pads per terminal. The unidirectional structure enables integration into DC-biased rails where forward conduction during surge recovery must be avoided.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 6.5 V - Maximum continuous reverse operating voltage before significant leakage; sets minimum system rail margin. |
| VBR (min/max) | 7.2 V / 7.96 V at 10 mA - Tight breakdown window ensures predictable turn-on across temperature and unit variation. |
| VC at IPP | 10.2 V at 58.8 A (10/1000 μs) - Clamping voltage defines worst-case overvoltage seen by protected IC during surge. |
| PPPM (10/1000 μs) | 600 W - Peak transient energy handling capacity under standard lightning-surge waveform. |
| ID at VWM | ≤100 μA - Low leakage preserves efficiency in battery-powered or high-impedance sensor interfaces. |
| RθJA | 120 °C/W - Thermal resistance determines safe power derating above 25 °C ambient; requires defined pad layout. |
| Polarity | Unidirectional - Enables use only on DC-biased lines; cathode marked by band, anode unmarked. |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, matte tin-plated leads, RoHS-compliant (E3 suffix), MSL level 1, 260 °C reflow compatible.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal during forward conduction or surge clamping | Connected to lower-potential side of protected line; no marking on body. |
| Cathode | Current exit terminal during reverse-biased clamping | Identified by color band; connected to higher-potential side (e.g., VIN or signal line). |
Key Features
| Feature | Design Value |
|---|---|
| Clamping performance | 10.2 V max clamping at 58.8 A ensures protected ICs see <11 V during 10/1000 μs surge. |
| Thermal robustness | RθJA = 120 °C/W with recommended 5.0 mm × 5.0 mm pads supports 4 W continuous dissipation at TA = 50 °C. |
| Manufacturing compatibility | MSL level 1 rating and 260 °C peak reflow tolerance enable standard SMT assembly without baking. |
| Reliability assurance | JESD 201 class 2 whisker resistance and UL 94 V-0 molding compound meet industrial safety requirements. |
Applications
| Industrial Power Supply Protection | Automotive Body Control Module (BCM) Inputs |
|---|---|
Use Scenario: Protecting 12 V DC input rails of programmable logic controllers against load dump and inductive switching spikes. IC Role / Device Role / Timing Role: Unidirectional TVS placed between input rail and ground to clamp transients before they reach DC-DC converters and microcontrollers. Use Value: 10.2 V clamping prevents overvoltage damage to 16 V-rated input stages while maintaining <100 μA leakage at nominal 12 V operation. |
Use Scenario: Safeguarding LIN bus receiver inputs and sensor analog front-ends in BCMs exposed to ISO 7637-2 Pulse 1/2a/3a transients. IC Role / Device Role / Timing Role: Point-of-entry TVS on each LIN line and analog sensor supply, mounted directly at connector interface. Use Value: 600 W peak power rating handles 10/1000 μs pulses up to 58.8 A without degradation; SMA footprint allows dense placement near connectors. |
| Consumer Appliance Motor Drive Circuits | Telecom PoE Midspan Surge Protection |
Use Scenario: Suppressing back-EMF spikes from brushed DC motors in washing machine control boards. IC Role / Device Role / Timing Role: TVS placed across motor terminals and across H-bridge FET drains to limit voltage overshoot during commutation. Use Value: 7.2–7.96 V VBR ensures reliable triggering before MOSFET avalanche, while 0.038 Ω RD minimizes clamping delay and overshoot. |
Use Scenario: Secondary-side transient suppression on 48 V PoE power pairs upstream of PD interface ICs in midspan injectors. IC Role / Device Role / Timing Role: Unidirectional TVS on each power pair (PSE side), grounded to chassis to divert common-mode surges. Use Value: 6.5 V VWM aligns with IEEE 802.3af/at holdover voltage margins; 120 °C/W RθJA supports thermal management in compact midspan enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMA6J6.0A-E3/5A | Lower VWM (6.0 V) and VBR (6.7–7.41 V); 9.5 V clamping at 63.2 A | Better suited for 5 V systems with tighter voltage margins; higher IPP but lower clamping headroom | Select when protecting 5 V logic rails where 6.5 V VWM risks false triggering during ripple. |
| SMA6J7.5A-E3/5A | Higher VWM (7.5 V) and VBR (8.33–9.21 V); 11.8 V clamping at 50.8 A | Preferred for 9–12 V automotive or industrial rails requiring higher standoff and reduced leakage (<1 μA) | Choose for 12 V systems needing >7 V margin before clamping, especially where low ID at VWM is critical. |
Compared with SMA6J6.5A-E3/5A, the SMA6J6.0A-E3/5A offers earlier clamping but less overvoltage margin, while the SMA6J7.5A-E3/5A provides greater standoff and lower leakage at the cost of higher clamping voltage-selection depends on system VDD tolerance and surge amplitude distribution.
Availability
SMA6J6.5A-E3/5A is available at Aetrix Electronics and suitable for industrial power supplies, automotive body electronics, consumer appliance motor drives, and telecom PoE midspan equipment requiring stable component supply and long-term obsolescence management.
Supply support for SMA6J6.5A-E3/5A 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, thermal performance, and AEC-Q200 qualification.
The SMA6J series is part of Vishay's Transient Voltage Suppressor portfolio, engineered specifically for high-energy, surface-mount surge protection in harsh environments including automotive, industrial, and telecom infrastructure.
FAQ
What is the maximum clamping voltage of the SMA6J6.5A-E3/5A under a 10/1000 μs surge?
The SMA6J6.5A-E3/5A has a maximum clamping voltage (VC) of 10.2 V when subjected to a 10/1000 μs waveform at its rated peak pulse current of 58.8 A. This value is measured per the conditions specified in the Vishay datasheet (Document Number: 89460, Rev. 09-Jan-2024) and reflects worst-case voltage seen by downstream components during standardized surge events. The SMA6J6.5A-E3/5A maintains this clamping performance across its operational temperature range.
Is the SMA6J6.5A-E3/5A RoHS-compliant and suitable for lead-free reflow?
Yes, the SMA6J6.5A-E3/5A carries the "E3" suffix indicating RoHS-compliance and industrial-grade qualification. It meets J-STD-020 MSL level 1 and supports lead-free reflow with a maximum peak temperature of 260 °C. The matte tin-plated leads are solderable per J-STD-002 and JESD 22-B102, and the device passes JESD 201 class 2 whisker testing. The SMA6J6.5A-E3/5A is fully qualified for automated SMT assembly without pre-baking.
What is the leakage current specification for the SMA6J6.5A-E3/5A at its stand-off voltage?
The SMA6J6.5A-E3/5A exhibits a maximum reverse leakage current (ID) of 100 μA when biased at its 6.5 V stand-off voltage (VWM) and tested at 25 °C. This low leakage ensures minimal power loss in always-on or battery-backed circuits and preserves signal integrity in high-impedance sensor interfaces. The SMA6J6.5A-E3/5A maintains this specification across its full operating temperature range per Vishay's published electrical characteristics table.
Can the SMA6J6.5A-E3/5A be used in bidirectional applications?
No, the SMA6J6.5A-E3/5A is explicitly unidirectional, as confirmed in the Vishay datasheet under FEATURES and PRIMARY CHARACTERISTICS. It conducts only in reverse breakdown (cathode-to-anode) and blocks forward current beyond its VF (~3.5 V at 25 A). For bidirectional transient suppression, a dedicated bidirectional TVS such as the SMBJ6.5CA or equivalent must be selected. Using the SMA6J6.5A-E3/5A in AC or bipolar signal paths will result in unintended forward conduction.
What PCB pad layout is required to achieve the published thermal resistance for the SMA6J6.5A-E3/5A?
To achieve the specified RθJA of 120 °C/W, the SMA6J6.5A-E3/5A must be mounted on PCB copper pads measuring 5.0 mm × 5.0 mm per terminal, as stated in Note (2) of the Vishay datasheet. Smaller pads increase thermal resistance and reduce safe operating power. The SMA6J6.5A-E3/5A thermal performance is validated only with this layout; deviation requires derating calculations using Fig. 2 (derating curve) and verified thermal simulation.
SMA6J6.5A-E3/5A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AC, SMA
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 6.5V
- Voltage - Breakdown (Min):
- 7.2V
- Voltage - Clamping (Max) @ Ipp:
- 14.5V
- Current - Peak Pulse (10/1000µs):
- 276A (8/20µs)
- Power - Peak Pulse:
- 4000W (4kW)
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
SMA6J6.5A-E3/5A FAQ
1.How can I place an order for SMA6J6.5A-E3/5A through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA6J6.5A-E3/5A 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 SMA6J6.5A-E3/5A reliable?
The price and inventory of SMA6J6.5A-E3/5A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMA6J6.5A-E3/5A is usually 5 days.
3.What payment methods are accepted for SMA6J6.5A-E3/5A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA6J6.5A-E3/5A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA6J6.5A-E3/5A?
SMA6J6.5A-E3/5A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA6J6.5A-E3/5A 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 SMA6J6.5A-E3/5A?
For technical support, including SMA6J6.5A-E3/5A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA6J6.5A-E3/5A requirements.
6.How does Aetrix verify that SMA6J6.5A-E3/5A is sourced from the original manufacturer or authorized distributors?
All SMA6J6.5A-E3/5A 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 SMA6J6.5A-E3/5A meets industry standards.
7.What is the process for return or replacement of SMA6J6.5A-E3/5A?
All SMA6J6.5A-E3/5A units undergo pre-shipment inspection (PSI). If there is an issue with SMA6J6.5A-E3/5A, 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 SMA6J6.5A-E3/5A part is unused and in its original packaging.
Return procedure for SMA6J6.5A-E3/5A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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