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Vishay General Semiconductor - Diodes Division SMA6J7.5A-E3/5A
- Part No.:
- SMA6J7.5A-E3/5A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMA6J7.5A-E3/5A.pdf
- Description:
- TVS DIODE 7.5VWM 17VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:8,418
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Product details
Overview
SMA6J7.5A-E3/5A from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMA (DO-214AC) package, with 7.5 V stand-off voltage (VWM), 8.33–9.21 V breakdown voltage (VBR at IT = 1 A), and 11.8 V maximum clamping voltage (VC) at 50.8 A peak pulse current (IPP) under 10/1000 μs waveform. It delivers 600 W peak pulse power and is used to protect MOSFETs, ICs, and sensor signal lines against inductive switching transients in industrial and telecom equipment.
For engineers reviewing the SMA6J7.5A-E3/5A datasheet, SMA6J7.5A-E3/5A pinout, SMA6J7.5A-E3/5A application, or SMA6J7.5A-E3/5A equivalent, key selection criteria include clamping performance at 50.8 A IPP, thermal resistance (RθJA = 120 °C/W), unidirectional polarity, RoHS-compliant matte tin terminals, and compatibility with automated SMT placement on PCBs with 5.0 mm × 5.0 mm copper pads.
Technical Context
This TVS diode operates as a voltage-clamped crowbar device triggered above its reverse breakdown threshold. Its dynamic resistance (RD = 0.051 Ω) and low clamping ratio (VC/VBR ≈ 1.42) ensure rapid suppression of transient energy while limiting voltage overshoot across protected circuit nodes.
Designed for single-polarity surge protection, it exhibits 1 μA max reverse leakage at 7.5 V, supports 50 A non-repetitive forward surge (IFSM), and maintains operation from –55 °C to +150 °C junction temperature. The SMA package enables high-power density in compact layouts without heatsinking under defined pad conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 7.5 V - Maximum continuous reverse operating voltage before conduction begins; sets protection threshold for normal signal line bias. |
| VBR min/max | 8.33 V / 9.21 V at 1 A - Confirmed breakdown range ensures reliable turn-on margin above VWM with minimal process variation. |
| VC at IPP | 11.8 V at 50.8 A (10/1000 μs) - Clamping voltage directly limits stress on downstream components during surge events. |
| PPPM | 600 W (10/1000 μs) - Peak transient energy handling capacity under standard lightning-surge test waveform. |
| ID at VWM | 1 μA max - Ultra-low leakage preserves signal integrity and power efficiency in high-impedance circuits. |
| RθJA | 120 °C/W - Thermal resistance defines safe power derating above 25 °C ambient; requires minimum 5.0 mm × 5.0 mm copper pads. |
| Polarity | Unidirectional - Protects against positive transients only; cathode marked by band; not suitable for AC or bidirectional clamping. |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, low-profile plastic case meeting UL 94 V-0 flammability rating. Matte tin-plated leads comply with J-STD-002 and JESD 22-B102 solderability standards. Cathode indicated by color band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point during forward conduction or transient clamping | Connected to protected line's low-side reference (e.g., ground return path); must be routed with low-inductance trace. |
| Cathode | Current exit point during clamping; marked by band | Connected to protected node (e.g., IC supply rail or signal line); determines polarity of suppression action. |
Key Features
| Feature | Design Value |
|---|---|
| Clamping performance | 11.8 V VC at 50.8 A IPP ensures sub-12 V overvoltage limit for 3.3 V/5 V logic rails during IEC 61000-4-5 surges. |
| Thermal robustness | RθJA = 120 °C/W with recommended pad layout enables 4 W steady-state dissipation at TA = 50 °C without forced cooling. |
| Automated assembly support | MSL level 1 rating and 260 °C lead-free reflow compatibility allow direct integration into high-volume SMT lines. |
| Reliability compliance | E3 suffix denotes RoHS-compliant, industrial-grade construction with JESD 201 class 2 whisker resistance and 150 °C max TJ. |
Applications
| Industrial Motor Drives | Telecom Power Interfaces |
|---|---|
Use Scenario: Protection of gate drivers and microcontrollers from inductive kickback during IGBT/MOSFET switching in variable-frequency drives. IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed between gate driver output and power switch gate to suppress >1 kV transients. Use Value: Limits gate-source voltage to ≤11.8 V during 50.8 A surge, preventing oxide breakdown and ensuring long-term reliability of silicon switches. | Use Scenario: Surge suppression on -48 V DC telecom power feeds exposed to lightning-induced surges per IEC 61000-4-5. IC Role / Device Role / Timing Role: Primary-level transient protector mounted at board edge before DC/DC converter input stage. Use Value: Absorbs 600 W peak pulse energy while holding line voltage below 12 V, avoiding brownout or latch-up in downstream PMICs. |
| Automotive Body Control Modules | Consumer Sensor Signal Lines |
Use Scenario: Protection of LIN bus transceivers and relay drivers against load dump and ISO 7637-2 pulses in 12 V systems. IC Role / Device Role / Timing Role: Unidirectional TVS connected between LIN data line and ground to clamp negative transients. Use Value: Achieves <1 μA leakage at 7.5 V, preserving bus idle voltage level and enabling reliable wake-up signaling. | Use Scenario: ESD and surge protection for analog outputs of temperature/humidity sensors in smart home hubs. IC Role / Device Role / Timing Role: Low-capacitance TVS placed inline with sensor output traces to suppress HBM ±8 kV and CDM ±1 kV events. Use Value: Delivers 11.8 V clamping with 0.051 Ω RD, minimizing signal distortion and maintaining ADC accuracy over full temperature range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMA6J7.5A-E3/61 | Same electrical specs; differs only in packaging-7″ tape/reel (1800 pcs) vs. 13″ tape/reel (7500 pcs) | Identical protection function; suited for lower-volume prototyping or smaller SMT lines with 7″ feeder compatibility | Select SMA6J7.5A-E3/61 when production volume or feeder infrastructure favors 7″ reels. |
| SMCJ7.5A-E3/57T | Higher PPPM (1500 W), larger SMC (DO-214AB) package, RθJA = 35 °C/W, same VWM/VBR/VC specs | Better thermal performance and surge margin; requires larger PCB footprint and different pad layout | Choose SMCJ7.5A-E3/57T where higher surge immunity or extended thermal headroom is required despite larger size. |
Compared with SMA6J7.5A-E3/5A, SMA6J7.5A-E3/61 offers identical protection in a smaller reel format for flexibility, while SMCJ7.5A-E3/57T trades compactness for 2.5× higher pulse power and superior thermal management-enabling use in higher-energy environments without layout redesign.
Availability
SMA6J7.5A-E3/5A is available at Aetrix Electronics and suitable for industrial motor drives, telecom power interfaces, and automotive body control modules requiring stable component supply and RoHS-compliant transient protection.
Supply support for SMA6J7.5A-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 and application-specific performance.
The SMA6J series is designed for high-efficiency, surface-mount transient suppression in space-constrained power and signal lines across industrial, telecom, and automotive systems-prioritizing low clamping voltage, fast response, and MSL Level 1 manufacturability.
FAQ
What is the maximum clamping voltage of the SMA6J7.5A-E3/5A under a 10/1000 µs surge?
The SMA6J7.5A-E3/5A has a maximum clamping voltage (VC) of 11.8 V at 50.8 A peak pulse current under the 10/1000 µs waveform. This value is measured per the standard test condition specified in the Vishay datasheet (Document Number: 89460), and reflects the actual voltage seen by protected circuitry during a typical lightning-surge event. The SMA6J7.5A-E3/5A maintains this clamping performance across its rated junction temperature range.
Is the SMA6J7.5A-E3/5A suitable for bidirectional transient protection?
No, the SMA6J7.5A-E3/5A is a unidirectional TVS diode and provides protection only against positive transients relative to its cathode. It cannot suppress negative-going surges on the same line. For bidirectional protection, a dedicated bidirectional TVS such as the SMA6J7.5CA-E3/5A would be required. The SMA6J7.5A-E3/5A polarity is clearly marked by a cathode band and must be oriented correctly in-circuit.
What is the thermal resistance and recommended PCB layout for the SMA6J7.5A-E3/5A?
The SMA6J7.5A-E3/5A has a typical junction-to-ambient thermal resistance (RθJA) of 120 °C/W when mounted on PCBs with 5.0 mm × 5.0 mm copper pads per terminal. This pad size is mandatory to achieve rated power dissipation and avoid thermal runaway. The device is rated for 4 W at TA = 50 °C, and derating curves in the datasheet must be followed for operation above that ambient temperature.
Does the SMA6J7.5A-E3/5A meet RoHS and lead-free assembly requirements?
Yes, the "E3" suffix in SMA6J7.5A-E3/5A indicates full RoHS compliance and industrial-grade qualification. Its matte tin-plated leads are compatible with lead-free reflow profiles up to 260 °C peak temperature (MSL Level 1 per J-STD-020), and it passes JESD 201 Class 2 whisker testing. The molding compound meets UL 94 V-0 flammability standards.
How does the leakage current of the SMA6J7.5A-E3/5A affect high-impedance sensor circuits?
The SMA6J7.5A-E3/5A exhibits a maximum reverse leakage current (ID) of 1 μA at its 7.5 V stand-off voltage, measured at 25 °C. This ultra-low leakage ensures minimal loading on high-impedance nodes-such as analog sensor outputs or reference lines-preserving signal accuracy and reducing measurement drift. At elevated temperatures, leakage remains well below 10 μA across the full –55 °C to +150 °C operating range.
SMA6J7.5A-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):
- 7.5V
- Voltage - Breakdown (Min):
- 8.33V
- Voltage - Clamping (Max) @ Ipp:
- 17V
- Current - Peak Pulse (10/1000µs):
- 235A (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)
SMA6J7.5A-E3/5A FAQ
1.How can I place an order for SMA6J7.5A-E3/5A through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA6J7.5A-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 SMA6J7.5A-E3/5A reliable?
The price and inventory of SMA6J7.5A-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 SMA6J7.5A-E3/5A is usually 5 days.
3.What payment methods are accepted for SMA6J7.5A-E3/5A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA6J7.5A-E3/5A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA6J7.5A-E3/5A?
SMA6J7.5A-E3/5A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA6J7.5A-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 SMA6J7.5A-E3/5A?
For technical support, including SMA6J7.5A-E3/5A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA6J7.5A-E3/5A requirements.
6.How does Aetrix verify that SMA6J7.5A-E3/5A is sourced from the original manufacturer or authorized distributors?
All SMA6J7.5A-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 SMA6J7.5A-E3/5A meets industry standards.
7.What is the process for return or replacement of SMA6J7.5A-E3/5A?
All SMA6J7.5A-E3/5A units undergo pre-shipment inspection (PSI). If there is an issue with SMA6J7.5A-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 SMA6J7.5A-E3/5A part is unused and in its original packaging.
Return procedure for SMA6J7.5A-E3/5A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMA6J7.5A-E3/5A Tags
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