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Vishay General Semiconductor - Diodes Division SMA5J7.0A-E3/5A
- Part No.:
- SMA5J7.0A-E3/5A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMA5J7.0A-E3/5A.pdf
- Description:
- TVS DIODE 7VWM 12VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:4,815
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Product details
Overview
SMA5J7.0A-E3/5A from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in SMA (DO-214AC) package, designed for primary overvoltage protection of DC power rails and signal lines. It features a 7.0 V stand-off voltage (VWM), 7.78–8.60 V breakdown voltage (VBR at 10 mA), 12.0 V clamping voltage (VC) at 41.7 A peak pulse current, and 500 W peak pulse power rating with 10/1000 µs waveform. It is widely deployed in automotive sensor interfaces and industrial I/O protection.
For engineers reviewing the SMA5J7.0A-E3/5A datasheet, SMA5J7.0A-E3/5A pinout, SMA5J7.0A-E3/5A application, or SMA5J7.0A-E3/5A equivalent, key selection criteria include clamping performance under 41.7 A surge, thermal resistance (RθJA = 80 °C/W), RoHS-compliant matte tin plating, MSL Level 1 moisture sensitivity, 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, leveraging a glass-passivated silicon junction to achieve sub-nanosecond response time and low incremental surge resistance. Its breakdown threshold is tightly specified between 7.78 V and 8.60 V at 10 mA test current, ensuring reliable turn-on before downstream IC damage.
The device sustains 500 W peak pulse power per 10/1000 µs waveform when mounted on minimum recommended pad layout, with thermal derating above 25 °C per Fig. 2. Junction temperature remains within -55 °C to +150 °C operating range, and polarity is marked by cathode band on the SMA package body.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 7.0 V - Maximum continuous reverse working voltage before leakage exceeds 200 µA; sets upper limit for protected line's nominal DC voltage. |
| VBR (min/max) | 7.78 V / 8.60 V at 10 mA - Confirmed breakdown window ensures predictable clamping onset across production lot and temperature. |
| VC @ IPPM | 12.0 V at 41.7 A - Clamping voltage during full-rated 500 W transient; defines maximum stress seen by downstream MOSFET or IC input. |
| PPPM | 500 W - Peak pulse power handling per standard 10/1000 µs waveform; determines survivability against common load-switching transients. |
| RθJA | 80 °C/W - Junction-to-ambient thermal resistance on 5.0 mm × 5.0 mm Cu pads; enables thermal design margin estimation for sustained surge duty. |
| TJ Range | -55 °C to +150 °C - Full operational and storage temperature envelope; supports under-hood automotive and industrial ambient conditions. |
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. Cathode indicated by band on body; no marking on bidirectional variants.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to ground or lower-potential rail in unidirectional configuration; carries forward surge current up to 40 A (8.3 ms half-sine). |
| Cathode | Reverse-biased clamping terminal | Connected to protected line; initiates avalanche conduction when reverse voltage exceeds VBR, diverting surge current to ground. |
Key Features
| Feature | Design Value |
|---|---|
| Low-profile SMA package | Enables high-density PCB layouts and compatibility with standard SMT pick-and-place equipment; footprint matches DO-214AC industry standard. |
| Glass-passivated junction | Ensures stable VBR tolerance and long-term reliability under repeated surge stress; eliminates risk of junction corrosion in humid environments. |
| MSL Level 1 rating | Allows unlimited floor life and reflow at peak 260 °C without baking; eliminates pre-reflow moisture mitigation steps in manufacturing. |
| AEC-Q101 qualification option | HE3/HM3 variants available for automotive applications; this E3/5A variant is commercial-grade but shares identical die and construction. |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from load-dump and inductive switching transients in vehicle ECUs. IC Role / Device Role / Timing Role: Unidirectional clamping TVS placed between sensor line and ground, activated within <1 ns to clamp spikes to ≤12.0 V. Use Value: Prevents latch-up or gate oxide rupture in 5 V or 3.3 V interface ICs during ISO 7637-2 Pulse 1/2a/5a events. |
Use Scenario: Safeguarding digital input modules in programmable logic controllers exposed to relay coil flyback and motor drive noise in factory automation. IC Role / Device Role / Timing Role: Primary overvoltage clamp on 24 V DC input channels, absorbing repetitive 500 W surges without degradation. Use Value: Extends mean time between failures (MTBF) by eliminating field returns due to transient-induced input stage damage. |
| Consumer Power Adapter Output | Telecom DC Power Distribution |
Use Scenario: Secondary-side surge suppression on 5–12 V outputs of wall adapters and USB PD chargers subjected to ESD and AC line coupling. IC Role / Device Role / Timing Role: Standoff-clamp TVS connected anode-to-ground, holding output below 12.0 V during 10/1000 µs transients. Use Value: Meets IEC 61000-4-5 Level 3 (1 kV/2 Ω) immunity requirements while maintaining tight output regulation. |
Use Scenario: Point-of-load protection on -48 V telecom power feeds feeding baseband processing units and RF front-ends. IC Role / Device Role / Timing Role: Reverse-polarity compatible unidirectional suppressor installed on supply rail upstream of DC/DC converters. Use Value: Limits voltage overshoot to ≤12.0 V during hot-swap insertion transients, preventing converter shutdown or latch-up. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ7.0A-E3/61 | Same VWM/VC, but rated for 400 W PPPM; smaller IPPM (32.4 A) and higher RθJA (90 °C/W). | Limited to lower-energy transients; less suitable for automotive load-dump where 500 W capability is mandated. | Select SMA5J7.0A-E3/5A when 500 W surge headroom and thermal margin are required on 24 V systems. |
| 1.5SMC7.0A | Same electrical specs but in larger SMC (DO-214AB) package; 1.5x higher thermal mass and RθJL = 15 °C/W. | Better sustained surge handling but incompatible with fine-pitch SMA footprints; requires PCB redesign. | Choose SMA5J7.0A-E3/5A for space-constrained designs needing 500 W in minimal board area. |
Compared with SMAJ7.0A-E3/61 and 1.5SMC7.0A, the SMA5J7.0A-E3/5A delivers superior power density (500 W in SMA), tighter VBR tolerance, and optimized thermal performance on standard SMT pads-making it preferred for next-gen automotive and industrial edge nodes where size and surge robustness are co-constrained.
Availability
SMA5J7.0A-E3/5A is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, and telecom DC distribution systems requiring stable component supply, RoHS compliance, and MSL Level 1 reflow readiness.
Supply support for SMA5J7.0A-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, power efficiency, and AEC-Q101 qualification.
The SMA5J series is part of Vishay's TRANSZORB® TVS platform, engineered specifically for high-energy transient suppression in harsh environments including automotive, industrial control, and communications infrastructure.
FAQ
What is the clamping voltage of the SMA5J7.0A-E3/5A under full-rated surge current?
The SMA5J7.0A-E3/5A exhibits a maximum clamping voltage (VC) of 12.0 V when subjected to its rated peak pulse current of 41.7 A using the standard 10/1000 µs waveform. This value is measured at TA = 25 °C on minimum recommended copper pads and defines the upper voltage limit imposed on protected circuitry during surge events. The SMA5J7.0A-E3/5A maintains this clamping performance across its full operating temperature range.
Is the SMA5J7.0A-E3/5A suitable for automotive applications?
The SMA5J7.0A-E3/5A is RoHS-compliant and manufactured to Vishay's commercial-grade specifications. While it shares the same die and construction as AEC-Q101 qualified variants (e.g., SMA5J7.0AHE3_A), the SMA5J7.0A-E3/5A itself is not AEC-Q101 certified. For production automotive use, specify the HE3 or HM3 suffix; the SMA5J7.0A-E3/5A remains appropriate for prototyping, non-safety-critical subsystems, or industrial applications with similar environmental demands.
What does the "E3/5A" suffix indicate in SMA5J7.0A-E3/5A?
The "E3" denotes RoHS-compliant, commercial-grade construction with matte tin-plated leads; "5A" specifies packaging in 13-inch diameter plastic tape and reel containing 7500 units. This contrasts with "E3/61", which uses 7-inch reels of 1800 units. Both share identical electrical and thermal specifications-the suffix reflects only compliance grade and packaging format, not device performance.
How does the SMA5J7.0A-E3/5A compare to bidirectional TVS diodes like SMA5J7.0CA?
The SMA5J7.0A-E3/5A is unidirectional and includes a cathode band for polarity identification; it conducts forward surge current up to 40 A (8.3 ms). In contrast, SMA5J7.0CA is bidirectional, lacks polarity marking, and provides symmetrical clamping in both directions-but has no IFSM rating. Use SMA5J7.0A-E3/5A for DC rail protection where polarity is fixed; choose SMA5J7.0CA for AC-coupled or floating signal lines.
What is the maximum reverse leakage current for SMA5J7.0A-E3/5A at its stand-off voltage?
At VWM = 7.0 V and TA = 25 °C, the SMA5J7.0A-E3/5A exhibits a maximum reverse leakage current (ID) of 200 µA. This low leakage ensures minimal power loss and signal integrity impact in always-on circuits such as automotive wake-up lines or battery-backed sensors. Leakage remains below 500 µA up to 125 °C per Vishay's characterization data.
SMA5J7.0A-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):
- 7V
- Voltage - Breakdown (Min):
- 7.78V
- Voltage - Clamping (Max) @ Ipp:
- 12V
- Current - Peak Pulse (10/1000µs):
- 41.7A
- 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)
SMA5J7.0A-E3/5A FAQ
1.How can I place an order for SMA5J7.0A-E3/5A through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA5J7.0A-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 SMA5J7.0A-E3/5A reliable?
The price and inventory of SMA5J7.0A-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 SMA5J7.0A-E3/5A is usually 5 days.
3.What payment methods are accepted for SMA5J7.0A-E3/5A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA5J7.0A-E3/5A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA5J7.0A-E3/5A?
SMA5J7.0A-E3/5A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA5J7.0A-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 SMA5J7.0A-E3/5A?
For technical support, including SMA5J7.0A-E3/5A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA5J7.0A-E3/5A requirements.
6.How does Aetrix verify that SMA5J7.0A-E3/5A is sourced from the original manufacturer or authorized distributors?
All SMA5J7.0A-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 SMA5J7.0A-E3/5A meets industry standards.
7.What is the process for return or replacement of SMA5J7.0A-E3/5A?
All SMA5J7.0A-E3/5A units undergo pre-shipment inspection (PSI). If there is an issue with SMA5J7.0A-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 SMA5J7.0A-E3/5A part is unused and in its original packaging.
Return procedure for SMA5J7.0A-E3/5A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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