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Vishay General Semiconductor - Diodes Division SMA5J6.5A-E3/5A
- Part No.:
- SMA5J6.5A-E3/5A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMA5J6.5A-E3/5A.pdf
- Description:
- TVS DIODE 6.5VWM 11.2VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:9,115
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Product details
Overview
SMA5J6.5A-E3/5A from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in SMA (DO-214AC) 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), 44.6 A peak pulse current (IPPM), and clamps to ≤11.2 V at rated surge. It is widely used to protect MOSFET gates, microcontroller I/O, and automotive sensor interfaces against ESD and load-dump transients.
For engineers reviewing the SMA5J6.5A-E3/5A datasheet, SMA5J6.5A-E3/5A pinout, SMA5J6.5A-E3/5A application, or SMA5J6.5A-E3/5A equivalent, key selection criteria include clamping voltage vs. protected device's absolute maximum rating, VWM margin relative to operating voltage, thermal derating above 25 °C, and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
This unidirectional TVS diode operates as a voltage-clamped shunt protector: it remains high-impedance below VWM (6.5 V), then avalanches sharply at VBR (min 7.22 V) to divert surge current away from downstream circuitry. Its low incremental surge resistance ensures minimal voltage overshoot during fast transients like ESD (IEC 61000-4-2) or ISO 7637-2 pulses.
The device uses a glass-passivated silicon junction for stable leakage (<500 µA at VWM), achieves <1 ns response time, and is qualified to MSL level 1 (260 °C reflow peak). Thermal resistance is 80 °C/W junction-to-ambient on standard pad layout, limiting sustained power dissipation to ~625 mW at 150 °C TJ max.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 6.5 V - Maximum continuous reverse operating voltage before conduction begins; must exceed system nominal voltage by ≥10 % to avoid leakage-induced heating. |
| VBR (min/max) | 7.22 V / 7.98 V at 10 mA - Tight breakdown window ensures predictable turn-on; guarantees clamping initiates no later than 7.98 V under worst-case conditions. |
| VC @ IPPM | ≤11.2 V at 44.6 A - Clamping voltage defines maximum stress on protected IC; must stay below downstream device's absolute max rating (e.g., 12 V for 3.3 V logic I/O). |
| PPPM | 500 W (10/1000 µs) - Peak surge energy handling capacity; determines survivability against automotive load-dump or inductive switching events. |
| ID @ VWM | ≤500 µA - Low reverse leakage preserves battery life in always-on systems and avoids false triggering in high-impedance sensor bias networks. |
| TJ max | +150 °C - Enables operation in under-hood automotive environments; requires thermal design to limit steady-state power dissipation per RθJA = 80 °C/W. |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, low-profile plastic case with matte tin-plated leads. Cathode indicated by band; polarity-critical for unidirectional operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference node | Connected to ground or lowest potential rail; forms return path for surge current during clamping. |
| Cathode | Protected line input | Connected to line being protected (e.g., 5 V rail); avalanche conduction occurs between cathode and anode when voltage exceeds VBR. |
Key Features
| Feature | Design Value |
|---|---|
| Low-profile SMA package | Enables compact PCB layouts and compatibility with standard SMT pick-and-place equipment; footprint matches industry-standard DO-214AC land pattern. |
| Glass-passivated junction | Ensures long-term stability of VBR and ID across temperature and humidity; eliminates risk of junction corrosion in industrial environments. |
| MSL Level 1 rating | Supports single-reflow assembly without moisture sensitivity concerns; peak reflow temperature up to 260 °C permitted without preconditioning. |
| 500 W peak pulse power | Provides robust protection against ISO 7637-2 Pulse 1 (inductive switch-off) and Pulse 5a (load dump) in 12 V automotive systems. |
| AEC-Q101 qualification option | HE3/HM3 variants available for automotive-grade reliability; this E3/5A variant is commercial-grade but shares identical electrical specs and package. |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting analog output lines of pressure/temperature sensors in engine control modules exposed to load-dump transients up to 40 V. IC Role / Device Role / Timing Role: Unidirectional shunt TVS placed between sensor VOUT and chassis ground to clamp surges before they reach ADC input. Use Value: Limits voltage seen by 12-bit SAR ADC to ≤11.2 V, preserving measurement integrity and preventing latch-up during 500 W transients. |
Use Scenario: Safeguarding 24 V digital input channels on programmable logic controllers subject to relay coil flyback and ESD from operator touch. IC Role / Device Role / Timing Role: Standoff-rated TVS on each optocoupler input leg to absorb 10/1000 µs surges without degrading isolation barrier lifetime. Use Value: Maintains >10⁹ Ω input impedance at 24 V while clamping 44.6 A surges within 1 ns-preventing false triggering and optocoupler degradation. |
| USB Power Line Protection | MOSFET Gate Driver Protection |
Use Scenario: Securing VBUS line in USB-C receptacles against hot-plug insertion spikes and external ESD events per IEC 61000-4-2 Level 4. IC Role / Device Role / Timing Role: Primary clamping device between VBUS and GND, positioned upstream of USB PD controller and load switches. Use Value: Clamps 8 kV contact ESD to ≤11.2 V in <1 ns, ensuring USB PD negotiation remains uninterrupted and no overvoltage reaches 5 V LDOs. |
Use Scenario: Shielding high-side N-channel MOSFET gate drivers in motor inverters from Miller-induced voltage spikes during fast switching transitions. IC Role / Device Role / Timing Role: Fast-response TVS connected between gate and source to clamp dv/dt-induced overshoot exceeding driver's ±20 V rating. Use Value: Prevents gate oxide breakdown by limiting transient gate-source voltage to ≤11.2 V, enabling reliable 100 kHz PWM operation without desaturation faults. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMA5J6.5A-M3/5A | Halogen-free, RoHS-compliant variant with identical electrical specs and SMA package; same VWM, VBR, VC, and PPPM. | No functional difference; selected where halogen-free compliance is mandated by OEM environmental policy (e.g., automotive Tier 1 supply chain). | Choose SMA5J6.5A-M3/5A when halogen-free materials are contractually required; otherwise, SMA5J6.5A-E3/5A offers full RoHS compliance at standard cost. |
| SMA6J6.5A-E3/5A | 600 W peak pulse power (vs. 500 W), same VWM/VBR/VC; higher IPPM (50.5 A), slightly higher RθJA (85 °C/W). | Better suited for harsher surge environments (e.g., 24 V industrial buses with repetitive switching noise) where 20 % extra energy margin is needed. | Select SMA6J6.5A-E3/5A only if system-level testing confirms 500 W is insufficient; verify thermal layout supports higher steady-state dissipation due to reduced thermal efficiency. |
Compared with SMA5J6.5A-E3/5A, the M3 variant adds halogen-free compliance without performance trade-offs, while the SMA6J6.5A-E3/5A increases surge margin at the cost of marginally higher thermal resistance-making the E3/5A optimal for cost-sensitive, volume automotive and industrial designs requiring proven 500 W capability.
Availability
SMA5J6.5A-E3/5A is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, and USB power delivery circuits requiring stable component supply, RoHS compliance, and SMT-ready packaging.
Supply support for SMA5J6.5A-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, precision, and high-power density.
The SMA5J series was developed specifically for surface-mount transient suppression in space-constrained automotive and industrial applications, balancing high PPPM, tight VBR tolerance, and MSL-1 process compatibility.
FAQ
What is the maximum clamping voltage of the SMA5J6.5A-E3/5A under rated surge conditions?
The SMA5J6.5A-E3/5A clamps to a maximum of 11.2 V when subjected to its rated 44.6 A peak pulse current (IPPM) using the standardized 10/1000 µs waveform. This value is guaranteed across temperature and lot variations per Vishay's datasheet specification and is measured with the device mounted on 5.0 mm × 5.0 mm copper pads per JEDEC standards. The SMA5J6.5A-E3/5A maintains this clamping performance without degradation up to its 150 °C maximum junction temperature.
Is the SMA5J6.5A-E3/5A suitable for bidirectional transient protection?
No-the SMA5J6.5A-E3/5A is a unidirectional TVS diode, intended only for DC or positive-polarity surge suppression. For bidirectional protection (e.g., AC signal lines or differential buses), Vishay specifies part numbers ending in "CA", such as SMA5J6.5CA. Using the SMA5J6.5A-E3/5A in reverse-biased configurations risks permanent damage due to lack of symmetrical avalanche structure. Always confirm polarity marking (cathode band) during PCB layout for the SMA5J6.5A-E3/5A.
What does the "E3/5A" suffix indicate in SMA5J6.5A-E3/5A?
The "E3" denotes RoHS-compliant, commercial-grade construction with matte tin-plated leads meeting J-STD-002 solderability requirements. The "5A" specifies the packaging format: 7500 units per 13-inch diameter plastic tape-and-reel, optimized for high-volume SMT assembly. This differs from "E3/61", which uses 1800-unit 7-inch reels. Both share identical electrical and thermal specifications-the suffix reflects only compliance grade and logistics configuration for the SMA5J6.5A-E3/5A.
How does thermal derating affect the SMA5J6.5A-E3/5A's surge capability above 25 °C?
The SMA5J6.5A-E3/5A's peak pulse power (PPPM) must be linearly derated above 25 °C ambient, following the curve in Figure 2 of Vishay document 88875. At 85 °C ambient, its usable PPPM drops to approximately 350 W; at 125 °C, it falls to ~180 W. This derating stems from fixed junction-to-ambient thermal resistance (RθJA = 80 °C/W) and 150 °C maximum junction temperature. System designers must validate layout copper area and airflow to ensure the SMA5J6.5A-E3/5A stays within safe thermal limits during repeated surge events.
Can the SMA5J6.5A-E3/5A replace older SMAJ6.5A devices in existing designs?
Yes-the SMA5J6.5A-E3/5A is a direct drop-in replacement for SMAJ6.5A in most cases, sharing identical SMA (DO-214AC) package dimensions, pinout, and key electrical parameters (VWM = 6.5 V, VC ≤ 11.2 V). However, the SMA5J series offers higher PPPM (500 W vs. 400 W for SMAJ6.5A) and improved thermal resistance. No PCB changes are required, but designers should verify that the increased surge margin does not alter system-level clamping behavior or overstress downstream components when used in legacy layouts originally sized for SMAJ6.5A.
SMA5J6.5A-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):
- 7.22V
- Voltage - Clamping (Max) @ Ipp:
- 11.2V
- Current - Peak Pulse (10/1000µs):
- 44.6A
- 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)
SMA5J6.5A-E3/5A FAQ
1.How can I place an order for SMA5J6.5A-E3/5A through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA5J6.5A-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 SMA5J6.5A-E3/5A reliable?
The price and inventory of SMA5J6.5A-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 SMA5J6.5A-E3/5A is usually 5 days.
3.What payment methods are accepted for SMA5J6.5A-E3/5A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA5J6.5A-E3/5A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA5J6.5A-E3/5A?
SMA5J6.5A-E3/5A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA5J6.5A-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 SMA5J6.5A-E3/5A?
For technical support, including SMA5J6.5A-E3/5A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA5J6.5A-E3/5A requirements.
6.How does Aetrix verify that SMA5J6.5A-E3/5A is sourced from the original manufacturer or authorized distributors?
All SMA5J6.5A-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 SMA5J6.5A-E3/5A meets industry standards.
7.What is the process for return or replacement of SMA5J6.5A-E3/5A?
All SMA5J6.5A-E3/5A units undergo pre-shipment inspection (PSI). If there is an issue with SMA5J6.5A-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 SMA5J6.5A-E3/5A part is unused and in its original packaging.
Return procedure for SMA5J6.5A-E3/5A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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