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Vishay General Semiconductor - Diodes Division SMA6J7.5A-M3/5A
- Part No.:
- SMA6J7.5A-M3/5A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMA6J7.5A-M3/5A.pdf
- Description:
- TVS DIODE 7.5VWM 11.8VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:3,501
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Product details
Overview
SMA6J7.5A-M3/5A 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 7.5 V stand-off voltage (VWM), 8.33–9.21 V breakdown voltage (VBR at IT = 1 A), 11.8 V maximum clamping voltage at 50.8 A (10/1000 µs), and 600 W peak pulse power rating. It protects MOSFETs and ICs in industrial power supplies and sensor interfaces.
For engineers reviewing the SMA6J7.5A-M3/5A datasheet, SMA6J7.5A-M3/5A pinout, SMA6J7.5A-M3/5A application, or SMA6J7.5A-M3/5A equivalent, key selection criteria include unidirectional polarity, 120 °C/W junction-to-ambient thermal resistance, halogen-free RoHS-compliant construction (M3 suffix), and compatibility with automated SMT placement on PCBs with 5.0 mm × 5.0 mm copper pads per terminal.
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 (VCL/VBR ≈ 1.42) ensure rapid suppression of 10/1000 µs transients up to 600 W without latch-up or degradation under repetitive stress.
It is rated for -55 °C to +150 °C operating junction temperature, with derating above 25 °C per Fig. 2, and meets J-STD-020 MSL Level 1 moisture sensitivity with 260 °C lead-free reflow peak. The cathode band denotes polarity, and terminals are matte tin-plated for solderability per J-STD-002 and JESD 22-B102.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 7.5 V - Maximum continuous reverse operating voltage before leakage exceeds 1 µA; sets upper limit for normal circuit operation. |
| VBR (min/max) | 8.33 V / 9.21 V at IT = 1 A - Confirmed breakdown range ensures reliable turn-on across production lot and temperature. |
| VCL @ IPP | 11.8 V at 50.8 A (10/1000 µs) - Clamping voltage seen by protected IC during worst-case surge; enables safe margin below IC absolute max ratings. |
| PPPM (10/1000 µs) | 600 W - Peak transient energy handling capacity with standard long-duration waveform; defines protection level for inductive switching events. |
| RθJA | 120 °C/W - Junction-to-ambient thermal resistance on standard 5.0 mm × 5.0 mm Cu pad; determines required board copper area for thermal management. |
| IFSM | 50 A - Non-repetitive forward surge current (8.3 ms half-sine); supports robustness against accidental reverse-bias or AC-coupled surges. |
| Polarity | Unidirectional - Blocks reverse conduction only; requires correct orientation relative to protected line's DC bias direction. |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, halogen-free, RoHS-compliant (M3 suffix), matte tin-plated leads, cathode indicated by color band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / transient return path | Connected to lower-potential side of protected line (e.g., GND or negative rail); completes clamping loop during overvoltage event. |
| Cathode | Reverse-biased clamping node | Connected to higher-potential side (e.g., VIN, signal line); conducts when transient exceeds VWM, shunting current to anode. |
Key Features
| Feature | Design Value |
|---|---|
| Low-profile SMA package | Enables high-density PCB layouts and compatibility with standard SMT pick-and-place equipment without height interference. |
| MSL Level 1 rating | Allows unlimited floor life and single-reflow processing at 260 °C peak, eliminating bake requirements and reducing assembly cost. |
| Halogen-free (M3) | Meets IPC-4101D/21G and JEDEC J-STD-020 requirements for environmentally restricted applications without compromising flame retardancy (UL 94 V-0). |
| 0.051 Ω dynamic resistance | Minimizes voltage overshoot during fast-rising transients (<10 ns rise time), improving protection fidelity for sensitive CMOS inputs. |
| 150 °C max junction temperature | Supports operation in sealed industrial enclosures or near heat-generating components without thermal shutdown or parameter drift. |
Applications
| Industrial Power Input Protection | Automotive Sensor Signal Line Protection |
|---|---|
|
Use Scenario: 24 V DC input stage of PLC I/O module exposed to load dump and relay coil flyback. IC Role / Device Role / Timing Role: Unidirectional TVS clamps positive transients to <11.8 V, protecting downstream DC-DC controller and isolation barrier. Use Value: Prevents latch-up or gate oxide damage in MOSFET drivers by limiting surge voltage within 15% of 12 V logic rail absolute maximum rating. |
Use Scenario: CAN or LIN bus lines in engine control unit connected to temperature/pressure sensors. IC Role / Device Role / Timing Role: Fast-response clamping element placed at connector entry point to absorb ESD (IEC 61000-4-2) and ISO 7637-2 pulse 1/2a. Use Value: Limits induced voltage to ≤11.8 V during 50.8 A surge, maintaining signal integrity and preventing false triggering in analog front-end amplifiers. |
| Consumer USB Power Port Protection | Telecom DSL Line Interface Protection |
|
Use Scenario: VBUS line of USB-C port in smart home hub subjected to hot-plug insertion transients and nearby ESD events. IC Role / Device Role / Timing Role: Standoff-rated TVS absorbing 600 W pulses while maintaining <1 µA leakage at 5 V nominal supply. Use Value: Ensures no standby current increase or brownout risk during normal operation, yet responds within nanoseconds to >1 kV ESD strikes. |
Use Scenario: Tip/ring lines of ADSL/VDSL modem interface exposed to lightning-induced surges on outside plant wiring. IC Role / Device Role / Timing Role: Primary-level surge suppressor mounted before line transformer and codec IC, rated for 4000 W (8/20 µs). Use Value: Withstands telecom-grade surges up to 4 kV (10/700 µs equivalent), preserving codec functionality and avoiding fuse blowouts in secondary protection stages. |
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-E3/5A | Same electrical specs; RoHS-compliant but contains brominated flame retardants (non-halogen-free). | Acceptable where halogen-free compliance is not mandated (e.g., non-EU commercial equipment). | Select E3 if cost sensitivity outweighs halogen-free requirement; verify regional regulatory alignment. |
| SMBJ7.5A-M3 | Higher 600 W PPPM (10/1000 µs), same VWM/VCL, but SMB (DO-214AA) package - 2.5 mm wider, 0.3 mm taller. | Requires PCB layout revision due to larger footprint; better thermal dissipation (RθJA = 80 °C/W). | Choose SMBJ7.5A-M3 only when enhanced power handling or thermal margin is critical and board space allows. |
Compared with SMA6J7.5A-E3/5A, the M3 version adds halogen-free certification without performance trade-offs; compared with SMBJ7.5A-M3, SMA6J7.5A-M3/5A offers identical protection in a smaller footprint but requires tighter thermal design due to higher RθJA.
Availability
SMA6J7.5A-M3/5A is available at Aetrix Electronics and suitable for industrial power input protection, automotive sensor interface hardening, and consumer USB-C port surge suppression requiring stable component supply across multi-year production cycles.
Supply support for SMA6J7.5A-M3/5A 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 application-specific optimization.
The SMA6J series is engineered for high-energy transient suppression in compact SMT designs, targeting cost-sensitive yet mission-critical applications in industrial automation, automotive electronics, and communications infrastructure.
FAQ
What is the maximum clamping voltage of the SMA6J7.5A-M3/5A under a 10/1000 µs surge?
The SMA6J7.5A-M3/5A has a maximum clamping voltage (VCL) of 11.8 V at 50.8 A for a 10/1000 µs waveform. This value is measured per standard test conditions (TA = 25 °C, mounted on 5.0 mm × 5.0 mm Cu pads), and represents the peak voltage imposed on the protected circuit during surge conduction. The SMA6J7.5A-M3/5A maintains this clamping performance across its specified operating temperature range.
Does the SMA6J7.5A-M3/5A support lead-free reflow soldering?
Yes, the SMA6J7.5A-M3/5A is qualified for lead-free reflow soldering with a maximum peak temperature of 260 °C, meeting J-STD-020 MSL Level 1 requirements. Its matte tin-plated leads comply with J-STD-002 and JESD 22-B102 solderability standards, and the M3 suffix confirms halogen-free, RoHS-compliant construction compatible with standard Pb-free assembly processes.
How does the SMA6J7.5A-M3/5A differ from the SMA6J7.5A-E3/5A variant?
The SMA6J7.5A-M3/5A and SMA6J7.5A-E3/5A share identical electrical specifications, package dimensions, and thermal characteristics. The sole difference is material composition: M3 denotes halogen-free molding compound compliant with IPC-4101D/21G, while E3 uses brominated flame retardants. Both meet RoHS, but only M3 satisfies strict halogen-free mandates such as those in EU automotive or green procurement policies.
What is the leakage current specification for the SMA6J7.5A-M3/5A at its stand-off voltage?
At VWM = 7.5 V and TA = 25 °C, the SMA6J7.5A-M3/5A exhibits a maximum reverse leakage current (ID) of 1 µA. This low leakage ensures minimal power loss in always-on circuits and avoids false triggering in high-impedance sensor bias networks. Leakage remains ≤1 µA up to 85 °C, as confirmed in the device's electrical characteristics table.
Can the SMA6J7.5A-M3/5A be used in bidirectional protection configurations?
No, the SMA6J7.5A-M3/5A is unidirectional only, as explicitly stated in the Vishay datasheet. It conducts only in reverse bias above VBR and blocks forward current beyond its 3.5 V forward voltage drop at 25 A. For bidirectional transient suppression (e.g., AC lines or differential buses), a dedicated bidirectional TVS like SMA6J7.5CA-M3/5A-or back-to-back unidirectional devices-must be used instead of the SMA6J7.5A-M3/5A.
SMA6J7.5A-M3/5A 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:
- 11.8V
- Current - Peak Pulse (10/1000µs):
- 50.8A
- Power - Peak Pulse:
- 600W
- 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-M3/5A FAQ
1.How can I place an order for SMA6J7.5A-M3/5A through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA6J7.5A-M3/5A 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-M3/5A reliable?
The price and inventory of SMA6J7.5A-M3/5A 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-M3/5A is usually 5 days.
3.What payment methods are accepted for SMA6J7.5A-M3/5A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA6J7.5A-M3/5A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA6J7.5A-M3/5A?
SMA6J7.5A-M3/5A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA6J7.5A-M3/5A 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-M3/5A?
For technical support, including SMA6J7.5A-M3/5A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA6J7.5A-M3/5A requirements.
6.How does Aetrix verify that SMA6J7.5A-M3/5A is sourced from the original manufacturer or authorized distributors?
All SMA6J7.5A-M3/5A 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-M3/5A meets industry standards.
7.What is the process for return or replacement of SMA6J7.5A-M3/5A?
All SMA6J7.5A-M3/5A units undergo pre-shipment inspection (PSI). If there is an issue with SMA6J7.5A-M3/5A, 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-M3/5A part is unused and in its original packaging.
Return procedure for SMA6J7.5A-M3/5A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMA6J7.5A-M3/5A Tags
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