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Vishay General Semiconductor - Diodes Division SMA5J6.5-E3/5A
- Part No.:
- SMA5J6.5-E3/5A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMA5J6.5-E3/5A.pdf
- Description:
- TVS DIODE 6.5VWM 12.3VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:2,293
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Product details
Overview
SMA5J6.5-E3/5A from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in DO-214AC (SMA) package, designed for high-energy surge protection on DC power rails and signal lines. It features a 6.5 V stand-off voltage (VWM), 7.22–7.98 V breakdown voltage (VBR) at 10 mA, 500 W peak pulse power (10/1000 µs), and clamps transients to ≤11.2 V at 44.6 A IPPM - used in automotive power supply input stages and industrial sensor interface protection.
For engineers reviewing the SMA5J6.5-E3/5A datasheet, SMA5J6.5-E3/5A pinout, SMA5J6.5-E3/5A application, or SMA5J6.5-E3/5A equivalent, key selection criteria include verified unidirectional polarity, AEC-Q101 qualification, RoHS-compliant matte tin plating, MSL Level 1 rating, and thermal resistance (RθJA = 80 °C/W) under standard PCB pad layout.
Technical Context
This TVS diode operates as a voltage-clamping device triggered by overvoltage events exceeding its reverse stand-off voltage (6.5 V). Its glass-passivated junction ensures stable breakdown behavior and low leakage (<500 µA at VWM), while fast response time (<1 ns) enables protection of sensitive downstream ICs against ESD and inductive switching spikes.
The device is rated for 150 °C maximum junction temperature and supports 40 A non-repetitive forward surge current (8.3 ms half-sine). Its DO-214AC package provides low incremental surge resistance and meets UL 94 V-0 flammability requirements, with cathode band marking for unidirectional polarity identification.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 6.5 V - Maximum continuous reverse operating voltage before clamping begins; defines safe DC rail margin. |
| VBR min/max | 7.22 V / 7.98 V at 10 mA - Confirmed breakdown range ensures reliable triggering without premature conduction. |
| VC @ IPPM | ≤11.2 V at 44.6 A - Clamping voltage during 500 W surge; determines protected circuit's maximum transient stress. |
| PPPM | 500 W (10/1000 µs waveform) - Peak surge energy handling capacity under standardized test conditions. |
| ID @ VWM | ≤500 µA - Low reverse leakage preserves system efficiency and avoids false triggers in low-power circuits. |
| RθJA | 80 °C/W - Thermal resistance from junction to ambient on 5.0 mm × 5.0 mm copper pads; guides heatsinking design. |
Pinout & Package
Package: DO-214AC (SMA), surface-mount, low-profile case with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102; cathode indicated by band marking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry (unidirectional) | Connected to lower-potential side of protected line; conducts only during forward surge events. |
| Cathode | Reverse-biased terminal (marked with band) | Connected to higher-potential side; blocks normal operation but avalanches during overvoltage. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and surge endurance. |
| Glass passivated junction | Ensures stable VBR tolerance and long-term parameter stability under thermal and humidity stress. |
| MSL Level 1 (260 °C peak) | Compatible with standard lead-free reflow profiles without preconditioning or dry-pack requirements. |
| UL 94 V-0 molding compound | Self-extinguishing encapsulation meets safety standards for industrial and automotive enclosures. |
Applications
| Automotive Power Input Protection | Industrial Sensor Signal Line Protection |
|---|---|
Use Scenario: 12 V battery-fed ECUs exposed to load dump (ISO 7637-2 Pulse 5a) and jump-start surges. IC Role / Device Role / Timing Role: Primary clamping element placed upstream of LDOs and microcontrollers to limit rail voltage to safe levels. Use Value: Clamps 500 W transients to ≤11.2 V, preventing latch-up or permanent damage to 16 V-rated downstream ICs. |
Use Scenario: Analog output lines (e.g., 4–20 mA current loop) in factory automation sensors subject to cable ESD and field wiring faults. IC Role / Device Role / Timing Role: Bidirectional-capable protection (though SMA5J6.5-E3/5A is unidirectional, used with series resistor for asymmetrical threat mitigation). Use Value: Sub-1 ns response captures fast ESD events before op-amp inputs saturate; 500 µA leakage avoids signal offset errors. |
| Consumer Power Adapter Input Stage | Telecom DC Power Distribution Board |
Use Scenario: Secondary-side 5 V/12 V outputs of AC-DC adapters subjected to conducted noise and capacitor discharge transients. IC Role / Device Role / Timing Role: Final-stage TVS across output terminals to absorb residual surges escaping primary-side MOVs. Use Value: 6.5 V VWM allows clean regulation margin above nominal 5 V rail; 500 W rating handles repeated 10/1000 µs surges. |
Use Scenario: -48 V telecom power distribution boards where lightning-induced surges propagate through backplane traces. IC Role / Device Role / Timing Role: Unidirectional clamp referenced to system ground, protecting hot-swap controllers and PMBus interfaces. Use Value: 11.2 V clamping voltage ensures protected ICs with 16 V absolute max ratings remain within safe operating area. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMA5J6.5AHE3/5A | AEC-Q101 qualified variant with identical electrical specs; HE3 suffix denotes whisker-tested leads (JESD 201 Class 2). | Required for automotive modules requiring extended reliability validation beyond base AEC-Q101. | Select when full automotive qualification traceability and enhanced mechanical robustness are mandated. |
| SMA6J6.5A-E3/5A | 600 W PPPM rating (vs. 500 W); same VWM/VBR/VC; larger DO-214AB package with higher RθJA (100 °C/W). | Better suited for infrequent but higher-energy surges where thermal mass outweighs footprint constraints. | Choose when system-level testing confirms >500 W surge exposure and board space permits larger footprint. |
Compared with SMA5J6.5-E3/5A, SMA5J6.5AHE3/5A adds whisker-test compliance for harsh environments, while SMA6J6.5A-E3/5A trades higher surge capacity for larger size and reduced thermal efficiency - both require layout review due to differing package dimensions and thermal paths.
Availability
SMA5J6.5-E3/5A is available at Aetrix Electronics and suitable for automotive electronics, industrial sensor interfaces, and telecom power distribution requiring stable component supply with RoHS compliance and AEC-Q101 traceability.
Supply support for SMA5J6.5-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, MOSFETs, and protection devices with emphasis on reliability and application-specific performance.
The SMA5J series is engineered for high-power-density transient suppression in space-constrained automotive and industrial systems, balancing low clamping voltage, fast response, and robust surge handling in standard SMD packages.
FAQ
What is the polarity configuration of SMA5J6.5-E3/5A?
SMA5J6.5-E3/5A is a unidirectional TVS diode, with the cathode clearly marked by a band on the DO-214AC (SMA) package body. This polarity must be observed during PCB layout to ensure correct clamping direction - the cathode connects to the higher-potential side of the protected line, and the anode to the lower-potential or ground reference. Reverse installation will prevent proper overvoltage protection.
Does SMA5J6.5-E3/5A meet automotive qualification standards?
Yes, SMA5J6.5-E3/5A is RoHS-compliant and AEC-Q101 qualified, confirming its suitability for automotive applications including engine control units, body electronics, and infotainment power supplies. The qualification covers temperature cycling, high-temperature reverse bias, and surge endurance testing per AEC-Q101 Rev D, ensuring reliability under real-world vehicle environmental stresses.
What is the maximum clamping voltage for SMA5J6.5-E3/5A under surge conditions?
The maximum clamping voltage (VC) for SMA5J6.5-E3/5A is 11.2 V, measured at its peak pulse current (IPPM) of 44.6 A using the standardized 10/1000 µs waveform. This value represents the highest voltage the device allows across its terminals during a 500 W transient event, directly defining the upper voltage stress imposed on downstream components.
How does the thermal resistance of SMA5J6.5-E3/5A affect PCB layout?
SMA5J6.5-E3/5A has a typical junction-to-ambient thermal resistance (RθJA) of 80 °C/W when mounted on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. To maintain safe junction temperatures during repetitive surges, PCB layout must replicate this minimum copper area - undersized pads increase thermal resistance and risk exceeding the 150 °C maximum junction temperature.
Is SMA5J6.5-E3/5A compatible with lead-free reflow processes?
Yes, SMA5J6.5-E3/5A is rated MSL Level 1 per J-STD-020 with a maximum peak reflow temperature of 260 °C, making it fully compatible with standard lead-free soldering profiles. No moisture sensitivity precautions (e.g., baking or dry packing) are required prior to assembly, simplifying manufacturing logistics and reducing handling overhead.
SMA5J6.5-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:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 6.5V
- Voltage - Breakdown (Min):
- 7.22V
- Voltage - Clamping (Max) @ Ipp:
- 12.3V
- Current - Peak Pulse (10/1000µs):
- 40.7A
- Power - Peak Pulse:
- 500W
- 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)
SMA5J6.5-E3/5A FAQ
1.How can I place an order for SMA5J6.5-E3/5A through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA5J6.5-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 SMA5J6.5-E3/5A reliable?
The price and inventory of SMA5J6.5-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 SMA5J6.5-E3/5A is usually 5 days.
3.What payment methods are accepted for SMA5J6.5-E3/5A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA5J6.5-E3/5A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA5J6.5-E3/5A?
SMA5J6.5-E3/5A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA5J6.5-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 SMA5J6.5-E3/5A?
For technical support, including SMA5J6.5-E3/5A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA5J6.5-E3/5A requirements.
6.How does Aetrix verify that SMA5J6.5-E3/5A is sourced from the original manufacturer or authorized distributors?
All SMA5J6.5-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 SMA5J6.5-E3/5A meets industry standards.
7.What is the process for return or replacement of SMA5J6.5-E3/5A?
All SMA5J6.5-E3/5A units undergo pre-shipment inspection (PSI). If there is an issue with SMA5J6.5-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 SMA5J6.5-E3/5A part is unused and in its original packaging.
Return procedure for SMA5J6.5-E3/5A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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