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Vishay General Semiconductor - Diodes Division SMA6J7.5A-M3/61
- Part No.:
- SMA6J7.5A-M3/61
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMA6J7.5A-M3/61.pdf
- Description:
- TVS DIODE 7.5VWM 11.8VC DO214AC
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
SMA6J7.5A-M3/61 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 1 mA), 11.8 V maximum clamping voltage at 50.8 A (10/1000 μs), 600 W peak pulse power rating, and operates from –55 °C to +150 °C junction temperature - deployed in industrial sensor interface protection.
For engineers reviewing the SMA6J7.5A-M3/61 datasheet, SMA6J7.5A-M3/61 pinout, SMA6J7.5A-M3/61 application, or SMA6J7.5A-M3/61 equivalent, key selection considerations include clamping voltage margin vs. protected IC's absolute maximum rating, thermal resistance (RθJA = 120 °C/W), unidirectional polarity requirement, MSL Level 1 compliance, and halogen-free RoHS status per suffix M3.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector: under normal bias it presents <1 μA leakage at 7.5 V, then rapidly avalanches above ~8.33 V to limit transient energy. Its dynamic resistance (RD = 0.051 Ω) ensures low clamping overshoot during 10/1000 μs surges up to 50.8 A.
Designed for PCB-level surge immunity, it requires 5.0 mm × 5.0 mm copper pads per terminal for rated 600 W dissipation; thermal performance de-rates linearly above TA = 25 °C with RθJA = 120 °C/W and RθJL = 25 °C/W, enabling use in compact industrial control modules without active cooling.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 7.5 V - Maximum continuous reverse voltage before significant leakage; sets upper limit for protected line operating voltage. |
| VBR (min/max) | 8.33 V / 9.21 V at 1 mA - Confirmed avalanche onset range; defines minimum trigger threshold under DC stress. |
| VC at IPPM | 11.8 V at 50.8 A (10/1000 μs) - Clamped voltage seen by downstream circuit during standard lightning surge test. |
| PPPM (10×1000 μs) | 600 W - Peak transient power it can absorb without failure; determines survivability against IEC 61000-4-5 waveform. |
| ID at VWM | ≤1 μA - Ultra-low leakage ensures minimal standby power loss and no signal distortion on high-impedance lines. |
| TJ max. | +150 °C - Enables deployment in under-hood automotive ECUs or enclosed industrial drives without derating. |
| Package | SMA (DO-214AC) - Standardized SMT footprint compatible with automated placement; 0.208" x 0.157" body size. |
Pinout & Package
Two-terminal unidirectional TVS in SMA (DO-214AC) package: cathode marked by color band; anode and cathode leads are matte tin-plated, solderable per J-STD-002 and JESD 22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current sink input | Connected to protected line (e.g., 5 V rail); conducts surge current toward ground when clamping. |
| Cathode | Reference node / ground return | Connected to system ground plane; establishes reference for clamping action and defines unidirectional polarity. |
Key Features
| Feature | Design Value |
|---|---|
| Halogen-free, RoHS-compliant construction | M3 suffix confirms full compliance with JEDEC JESD201 Class 2 whisker resistance and environmental directives. |
| MSL Level 1 moisture sensitivity | Rated for floor life unlimited at ≤30 °C/85 % RH; supports standard SMT reflow without baking. |
| Low dynamic resistance (RD) | 0.051 Ω enables tight clamping window - critical for protecting 3.3 V or 5 V logic interfaces with narrow VIO margins. |
| High 8/20 μs surge capability | 4000 W rating allows robust defense against fast-rising EFT/burst events common in factory automation environments. |
| Industrial-grade temperature range | –55 °C to +150 °C operation supports deployment in motor drives, PLC I/O modules, and outdoor telecom equipment. |
Applications
| Industrial Sensor Interface Protection | DC Power Rail Surge Suppression |
|---|---|
Use Scenario: Protecting analog output lines (4–20 mA) and digital I/O of pressure/temperature sensors in factory-floor PLC racks exposed to relay coil switching noise. IC Role / Device Role / Timing Role: Shunt TVS placed between signal line and ground, triggered only during >8.33 V transients to clamp energy before reaching ADC or isolator inputs. Use Value: Limits induced voltage spikes to ≤11.8 V, preserving integrity of 12-bit DACs and preventing latch-up in isolated RS-485 transceivers. |
Use Scenario: Safeguarding 5 V or 12 V supply rails feeding microcontrollers and communication ICs in embedded gateways subjected to load dump or hot-swap events. IC Role / Device Role / Timing Role: Parallel-connected transient suppressor across input capacitor, absorbing 600 W surges within 1 ms to prevent overvoltage shutdown of PMICs. Use Value: Maintains rail stability during 50.8 A 10/1000 μs transients, avoiding brownout resets and ensuring uninterrupted CAN bus operation. |
| Automotive Body Control Module (BCM) | Telecom Line Card Transient Immunity |
Use Scenario: Protecting LIN bus transceivers and LED driver outputs in BCMs where inductive loads (door locks, mirror actuators) generate repetitive 100 V spikes. IC Role / Device Role / Timing Role: Unidirectional TVS placed at transceiver VCC pin and LIN data line, clamping both supply and signal paths simultaneously. Use Value: Withstands ≥1000 surges at 50.8 A while maintaining <1 μA leakage at 7.5 V, ensuring long-term reliability without signal attenuation. |
Use Scenario: Hardening Ethernet PHY power pins and MDI differential pairs in enterprise VoIP gateways against lightning-induced surges entering via PoE or RJ45 ports. IC Role / Device Role / Timing Role: Primary front-end clamping device on 3.3 V/5 V bias rails and secondary suppression on differential signal pairs using dual-SMA layout. Use Value: Delivers 4000 W 8/20 μs surge handling - exceeding IEC 61000-4-5 Level 4 requirements - without compromising 100 Mbps signal integrity. |
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; RoHS-compliant but not halogen-free; uses SnPb-free matte tin plating without JESD201 Class 2 whisker testing. | Approved for commercial-grade industrial designs where halogen-free mandate is absent; not qualified for automotive or aerospace. | Select SMA6J7.5A-E3/61 if halogen-free certification is not required and cost optimization is prioritized. |
| SMBJ7.5A-M3 | Higher 600 W rating retained, but SMB (DO-214AA) package offers 20 % larger pad area and lower RθJA (100 °C/W); same VWM/VBR/VC. | Better thermal margin for high-density layouts or sustained surge duty cycles; requires larger PCB footprint (0.236" × 0.157"). | Choose SMBJ7.5A-M3 when board space permits and thermal headroom must exceed 20 °C/W versus SMA6J7.5A-M3/61. |
Compared with SMA6J7.5A-E3/61, the M3 suffix adds halogen-free assurance and whisker resistance for harsh environments; versus SMBJ7.5A-M3, the SMA6J7.5A-M3/61 trades 20 °C/W higher thermal resistance for 15 % smaller footprint - optimal for space-constrained sensor nodes.
Availability
SMA6J7.5A-M3/61 is available at Aetrix Electronics and suitable for industrial sensor interface protection, DC power rail surge suppression, and automotive body control module designs requiring stable component supply, halogen-free compliance, and MSL Level 1 manufacturability.
Supply support for SMA6J7.5A-M3/61 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, precision, and high-power handling.
The SMA6J series is part of Vishay's Transient Voltage Suppressor portfolio, engineered specifically for robust, surface-mount surge protection in industrial, automotive, and telecom infrastructure where repeatable clamping performance and long-term stability are critical.
FAQ
What is the maximum clamping voltage of the SMA6J7.5A-M3/61 under a 10/1000 μs surge?
The SMA6J7.5A-M3/61 exhibits a maximum clamping voltage (VC) of 11.8 V when subjected to a 10/1000 μs waveform at its rated peak pulse current of 50.8 A. This value is measured per the conditions specified in the Vishay datasheet (Document Number: 89460), with the device mounted on 5.0 mm × 5.0 mm copper pads. The SMA6J7.5A-M3/61 maintains this clamping performance across its operational temperature range.
Does the SMA6J7.5A-M3/61 support bidirectional transient suppression?
No, the SMA6J7.5A-M3/61 is strictly unidirectional, as confirmed in the Vishay datasheet under FEATURES and ELECTRICAL CHARACTERISTICS. It conducts only when the cathode is biased positively relative to the anode - making it suitable for DC power line or single-polarity signal line protection. For bidirectional protection, engineers must select a designated bidirectional variant such as SMA6J7.5CA-M3/61, not the SMA6J7.5A-M3/61.
What is the leakage current specification for SMA6J7.5A-M3/61 at its stand-off voltage?
The SMA6J7.5A-M3/61 specifies a maximum reverse leakage current (ID) of 1 μA at its stand-off voltage (VWM) of 7.5 V, tested at TA = 25 °C. This ultra-low leakage ensures minimal impact on high-impedance sensor circuits and battery-powered systems, and is verified across the full industrial temperature range per the Vishay datasheet revision dated 09-Jan-2024.
Is SMA6J7.5A-M3/61 compliant with lead-free soldering standards?
Yes, the SMA6J7.5A-M3/61 is fully compatible with lead-free reflow processes: it meets MSL Level 1 per J-STD-020, has a maximum peak reflow temperature rating of 260 °C, and features matte tin-plated leads qualified per J-STD-002 and JESD 22-B102. The M3 suffix further certifies compliance with JEDEC JESD201 Class 2 whisker resistance requirements.
How does the thermal resistance of SMA6J7.5A-M3/61 affect its power handling capability?
The SMA6J7.5A-M3/61 has a typical junction-to-ambient thermal resistance (RθJA) of 120 °C/W when mounted on the recommended 5.0 mm × 5.0 mm copper pads. At TA = 50 °C, its derated power dissipation is 4.0 W - meaning sustained power must remain below this level unless additional heatsinking is applied. This RθJA directly limits its usable duty cycle during repetitive surges and informs PCB layout decisions for thermal management.
SMA6J7.5A-M3/61 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-M3/61 FAQ
1.How can I place an order for SMA6J7.5A-M3/61 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA6J7.5A-M3/61 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-M3/61 reliable?
The price and inventory of SMA6J7.5A-M3/61 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-M3/61 is usually 5 days.
3.What payment methods are accepted for SMA6J7.5A-M3/61?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA6J7.5A-M3/61 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA6J7.5A-M3/61?
SMA6J7.5A-M3/61 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA6J7.5A-M3/61 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-M3/61?
For technical support, including SMA6J7.5A-M3/61 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA6J7.5A-M3/61 requirements.
6.How does Aetrix verify that SMA6J7.5A-M3/61 is sourced from the original manufacturer or authorized distributors?
All SMA6J7.5A-M3/61 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-M3/61 meets industry standards.
7.What is the process for return or replacement of SMA6J7.5A-M3/61?
All SMA6J7.5A-M3/61 units undergo pre-shipment inspection (PSI). If there is an issue with SMA6J7.5A-M3/61, 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-M3/61 part is unused and in its original packaging.
Return procedure for SMA6J7.5A-M3/61:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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