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Vishay General Semiconductor - Diodes Division SMA5J7.5A-E3/61
- Part No.:
- SMA5J7.5A-E3/61
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMA5J7.5A-E3/61.pdf
- Description:
- TVS DIODE 7.5VWM 12.9VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:1,800
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Product details
Overview
SMA5J7.5A-E3/61 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 7.5 V stand-off voltage (VWM), 8.33–9.21 V breakdown voltage (VBR at 1.0 mA), 12.9 V clamping voltage (VC) at 38.8 A peak pulse current, and 500 W peak pulse power rating with 10/1000 µs waveform. It is widely deployed in automotive power supply inputs and industrial sensor interfaces.
For engineers reviewing the SMA5J7.5A-E3/61 datasheet, SMA5J7.5A-E3/61 pinout, SMA5J7.5A-E3/61 application, or SMA5J7.5A-E3/61 equivalent, key selection criteria include clamping performance under 38.8 A surge, thermal resistance (RθJA = 80 °C/W), RoHS-compliant matte tin plating, and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
This TVS diode operates as a unidirectional clamping device with cathode-band polarity marking, leveraging glass-passivated junction technology for stable avalanche behavior and low incremental surge resistance. Its response time is sub-nanosecond, enabling effective suppression of ESD and inductive switching transients.
The device is rated for -55 °C to +150 °C operating junction temperature, meets MSL Level 1 per J-STD-020 (260 °C reflow peak), and supports 40 A non-repetitive forward surge current (IFSM) - critical for protecting downstream MOSFETs and ICs during load dump events.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 7.5 V - maximum continuous reverse working voltage before conduction begins; sets minimum system rail margin for reliable standby operation |
| VBR (min/max) | 8.33 V / 9.21 V at 1.0 mA - guaranteed avalanche onset range ensures consistent turn-on across production lots and temperature |
| VC @ IPPM | 12.9 V at 38.8 A - clamping voltage limits protected circuit stress during 500 W transient; enables safe interface with 12 V automotive systems |
| PPPM | 500 W - peak pulse power handling with 10/1000 µs waveform defines robustness against ISO 7637-2 Pulse 1/2/5a surges |
| RθJA | 80 °C/W - junction-to-ambient thermal resistance determines derating above 25 °C ambient; requires ≥5.0 mm × 5.0 mm Cu pad for full rating |
| IFSM | 40 A - single half-sine surge rating (8.3 ms) supports load-dump immunity in 12 V vehicle electrical systems |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, low-profile plastic case with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102; polarity indicated by cathode band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias | Connected to lower-potential side (e.g., GND or return path); enables unidirectional clamping from cathode to anode |
| Cathode (banded end) | Current exit terminal in forward bias; clamping node in reverse bias | Connected to protected line (e.g., 12 V rail); conducts surge current to ground when VIN exceeds VBR |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable, repeatable avalanche characteristics over lifetime and temperature; eliminates parameter drift due to moisture or contamination |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients, improving protection margin for sensitive 3.3 V or 5 V logic interfaces |
| MSL Level 1 rating | Supports standard lead-free reflow profiles up to 260 °C peak without popcorn or delamination risk |
| RoHS-compliant, commercial-grade (E3 suffix) | Meets EU RoHS Directive 2011/65/EU; suitable for consumer, industrial, and non-AEC-Q101 automotive subsystems |
Applications
| Automotive Power Input Protection | Industrial Sensor Signal Line Clamp |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs from load dump and jump-start transients per ISO 7637-2. IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed between battery rail and input filter capacitor. Use Value: Clamps surge to ≤12.9 V at 38.8 A, preventing damage to upstream DC-DC controllers and LDOs rated for 16 V max input. |
Use Scenario: Shielding analog output lines (e.g., 4–20 mA current loop) from ESD and field-induced spikes in factory automation. IC Role / Device Role / Timing Role: Point-of-entry TVS on sensor PCB, mounted directly at connector. Use Value: Sub-ns response captures fast transients before they propagate into precision op-amps or ADC front-ends. |
| Consumer Power Adapter Interface | Telecom DC Power Feed Protection |
Use Scenario: Safeguarding USB-C PD or barrel-jack inputs in smart home hubs against AC/DC adapter misconnection surges. IC Role / Device Role / Timing Role: Primary overvoltage clamp on main DC input before buck converter stage. Use Value: 500 W rating handles repetitive 100 V/10 µs surges common in low-cost off-line adapters without degradation. |
Use Scenario: Protecting PoE-powered devices (e.g., IP cameras) from induced surges on 48 V DC feed lines in outdoor cabling runs. IC Role / Device Role / Timing Role: Secondary-level TVS on PSE-side DC input, coordinated with primary MOV network. Use Value: 12.9 V clamping allows use with 48 V nominal systems while maintaining >35 V headroom for normal operation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMA5J7.5A-M3/61 | Halogen-free, RoHS-compliant variant; identical electrical specs and package | Required for halogen-free BOM compliance in EU medical or green-certified industrial equipment | Select when halogen-free material declaration is mandated; no layout or performance change needed |
| SMA5J7.5AHE3_A/61 | AEC-Q101 qualified version; same VWM, VBR, VC, and PPPM; adds automotive reliability testing | Approved for under-hood automotive modules (e.g., body control units) requiring qualification evidence | Choose for automotive OEM designs where AEC-Q101 documentation and traceability are contractually required |
Compared with SMA5J7.5A-M3/61 and SMA5J7.5AHE3_A/61, the SMA5J7.5A-E3/61 offers standard commercial-grade reliability and RoHS compliance without halogen-free or automotive qualification overhead - ideal for cost-sensitive industrial and consumer applications where those certifications are not mandated.
Availability
SMA5J7.5A-E3/61 is available at Aetrix Electronics and suitable for automotive power input protection, industrial sensor signal line clamping, and consumer power adapter interface applications requiring stable component supply, full traceability, and consistent tape-and-reel delivery.
Supply support for SMA5J7.5A-E3/61 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, TVS devices, and optoelectronics with emphasis on high-reliability, high-power-density solutions.
The SMA5J series was engineered for high-energy transient suppression in space-constrained SMT applications, targeting automotive, industrial, and telecom systems where robust 500 W surge handling and stable clamping are mandatory.
FAQ
What is the clamping voltage of the SMA5J7.5A-E3/61 under maximum rated surge current?
The SMA5J7.5A-E3/61 has a maximum clamping voltage (VC) of 12.9 V when subjected to its rated peak pulse current of 38.8 A using a 10/1000 µs waveform. This value is measured per test condition specified in Vishay document 88875 and defines the upper voltage limit imposed on the protected circuit during surge events. The SMA5J7.5A-E3/61 maintains this clamping performance across its operational temperature range.
Is the SMA5J7.5A-E3/61 suitable for automotive applications?
The SMA5J7.5A-E3/61 is RoHS-compliant and rated for -55 °C to +150 °C junction temperature, making it usable in many automotive subsystems such as infotainment or body electronics. However, it is not AEC-Q101 qualified - for under-hood or safety-critical modules, the SMA5J7.5AHE3_A/61 variant must be selected. The SMA5J7.5A-E3/61 remains appropriate for non-qualified automotive applications where commercial-grade reliability suffices.
What does the "E3/61" suffix indicate in SMA5J7.5A-E3/61?
The "E3" suffix denotes RoHS-compliant, commercial-grade construction with matte tin-plated leads, while "/61" specifies packaging in 7-inch diameter plastic tape and reel containing 1800 units. This ordering code aligns with Vishay's standard commercial distribution channel and ensures compatibility with high-speed pick-and-place equipment calibrated for DO-214AC footprints.
How does the SMA5J7.5A-E3/61 compare to SMAJ7.5A in terms of surge capability?
The SMA5J7.5A-E3/61 delivers 500 W peak pulse power (10/1000 µs), whereas the SMAJ7.5A is rated for 400 W. This 25 % higher energy handling enables the SMA5J7.5A-E3/61 to withstand more severe transients such as extended load dump pulses or multiple ESD strikes without degradation. Both share the same SMA (DO-214AC) package and pinout, but the SMA5J series uses enhanced chip construction for improved surge endurance.
What PCB layout guidance applies to the SMA5J7.5A-E3/61 for optimal thermal performance?
To achieve full 500 W rating, the SMA5J7.5A-E3/61 must be mounted on minimum 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal, as specified in Vishay document 88875. Smaller pads increase thermal resistance beyond the rated 80 °C/W, causing premature thermal runaway during repeated surges. Thermal vias under pads are recommended for high-reliability industrial deployments. The SMA5J7.5A-E3/61 layout must also maintain clearance from adjacent heat sources.
SMA5J7.5A-E3/61 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:
- 12.9V
- Current - Peak Pulse (10/1000µs):
- 38.8A
- 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)
SMA5J7.5A-E3/61 FAQ
1.How can I place an order for SMA5J7.5A-E3/61 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA5J7.5A-E3/61 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 SMA5J7.5A-E3/61 reliable?
The price and inventory of SMA5J7.5A-E3/61 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMA5J7.5A-E3/61 is usually 5 days.
3.What payment methods are accepted for SMA5J7.5A-E3/61?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA5J7.5A-E3/61 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA5J7.5A-E3/61?
SMA5J7.5A-E3/61 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA5J7.5A-E3/61 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 SMA5J7.5A-E3/61?
For technical support, including SMA5J7.5A-E3/61 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA5J7.5A-E3/61 requirements.
6.How does Aetrix verify that SMA5J7.5A-E3/61 is sourced from the original manufacturer or authorized distributors?
All SMA5J7.5A-E3/61 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 SMA5J7.5A-E3/61 meets industry standards.
7.What is the process for return or replacement of SMA5J7.5A-E3/61?
All SMA5J7.5A-E3/61 units undergo pre-shipment inspection (PSI). If there is an issue with SMA5J7.5A-E3/61, 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 SMA5J7.5A-E3/61 part is unused and in its original packaging.
Return procedure for SMA5J7.5A-E3/61:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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