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Vishay General Semiconductor - Diodes Division SMA5J7.5A-E3/5A
- Part No.:
- SMA5J7.5A-E3/5A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMA5J7.5A-E3/5A.pdf
- Description:
- TVS DIODE 7.5VWM 12.9VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:2,729
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Product details
Overview
SMA5J7.5A-E3/5A from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in SMA (DO-214AC) package, designed for robust overvoltage protection of 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 100 A peak pulse current (IPPM), and 500 W peak pulse power (PPPM) with 10/1000 µs waveform - deployed in automotive sensor interfaces and industrial I/O protection.
For engineers reviewing the SMA5J7.5A-E3/5A datasheet, SMA5J7.5A-E3/5A pinout, SMA5J7.5A-E3/5A application, or SMA5J7.5A-E3/5A equivalent, key selection criteria include verified clamping performance under 100 A surge, unidirectional polarity with cathode band marking, RoHS-compliant matte tin terminals, and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector: when reverse voltage exceeds VBR, it avalanches to divert transient energy away from downstream ICs. Its low incremental surge resistance and fast response time (<1 ns) ensure effective suppression of ESD, inductive switching spikes, and lightning-induced surges.
The device is rated for -55 °C to +150 °C junction temperature, meets MSL Level 1 (260 °C peak reflow), and is qualified per JESD201 Class 2 whisker test. Its glass-passivated junction and UL 94 V-0 molding compound support reliability in harsh environments including automotive under-hood applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Stand-off Voltage (VWM) | 7.5 V - maximum continuous reverse operating voltage before conduction begins |
| Breakdown Voltage (VBR) | 8.33–9.21 V at 1.0 mA - guaranteed avalanche initiation range for reliable triggering |
| Clamping Voltage (VC) | 12.9 V at 100 A IPPM - peak voltage seen by protected circuit during worst-case 10/1000 µs surge |
| Peak Pulse Power (PPPM) | 500 W - maximum transient energy dissipation capability under standardized waveform |
| Peak Pulse Current (IPPM) | 100 A - maximum non-repetitive surge current the device can safely clamp |
| Junction Temperature Range | -55 °C to +150 °C - enables operation in automotive engine control units and industrial motor drives |
| Package | SMA (DO-214AC) - surface-mount outline with 5.28 mm length, 4.50 mm width, and 2.29 mm height |
Pinout & Package
Package: SMA (DO-214AC), molded plastic case with matte tin-plated leads; polarity indicated by cathode band at one end; mounted on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / reverse surge return path | Connected to ground or low-impedance return in unidirectional configuration |
| Cathode (banded end) | Reverse voltage sensing / clamping node | Connected to protected line (e.g., 12 V rail or CAN_H); avalanche initiates here during overvoltage |
Key Features
| Feature | Design Value |
|---|---|
| Low-profile SMA package | Enables high-density PCB layouts and compatibility with standard SMT pick-and-place equipment |
| Glass-passivated chip junction | Ensures stable VBR tolerance and long-term reliability under thermal cycling and humidity stress |
| MSL Level 1 rating | Supports single-reflow assembly without moisture sensitivity concerns (peak 260 °C) |
| 500 W peak pulse power | Provides margin against ISO 7637-2 Pulse 1/2a/5a transients and IEC 61000-4-5 surge events |
| RoHS-compliant, commercial grade (E3 suffix) | Meets environmental compliance requirements for global industrial and consumer electronics |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting analog sensor outputs (e.g., pressure, temperature) in 12 V automotive subsystems from load-dump and inductive kickback. IC Role / Device Role / Timing Role: Unidirectional shunt TVS placed between sensor signal line and chassis ground. Use Value: Limits transient voltage to ≤12.9 V during 100 A surges, preventing damage to 3.3 V/5 V ADC front-ends and maintaining signal integrity. |
Use Scenario: Safeguarding digital input channels on programmable logic controller (PLC) modules exposed to field wiring transients. IC Role / Device Role / Timing Role: Standoff-clamp TVS connected across input terminal and common reference rail. Use Value: Clamps 500 W surges within 1 ns, enabling compliance with IEC 61000-4-4 EFT and IEC 61000-4-5 surge immunity standards. |
| DC Power Rail Protection | Consumer Device USB Port Protection |
Use Scenario: Secondary overvoltage protection on 5–12 V DC power distribution networks in embedded systems. IC Role / Device Role / Timing Role: Parallel-connected TVS on main supply rail upstream of LDOs or DC/DC converters. Use Value: Absorbs up to 100 A surge current without failure, preserving downstream power management ICs during hot-swap or connector arcing events. |
Use Scenario: ESD and surge protection for VBUS and D+/D- lines in USB 2.0 peripheral ports. IC Role / Device Role / Timing Role: Unidirectional TVS on VBUS line referenced to ground; bidirectional variants used on data lines. Use Value: Meets IEC 61000-4-2 Level 4 (±15 kV air, ±8 kV contact) while adding <0.5 pF parasitic capacitance at 0 V bias. |
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-M3/5A | Halogen-free, RoHS-compliant variant with identical electrical specs and thermal performance | No functional difference; selected where halogen-free material compliance is mandated (e.g., EU public infrastructure projects) | Direct substitution if halogen-free requirement applies; same footprint and soldering profile |
| SMA5J7.5AHE3_A/I | AEC-Q101 qualified version with extended qualification testing (HTOL, TC, UHAST); otherwise identical VWM/VBR/VC/PPPM | Required for automotive safety-critical ECUs (e.g., ADAS camera modules, body control units) | Use only when automotive qualification is mandatory; not suitable for cost-sensitive commercial designs |
Compared with SMA5J7.5A-E3/5A, the M3/5A offers halogen-free construction without trade-offs in surge handling, while the HE3_A/I adds AEC-Q101 validation for automotive deployment - neither alters pinout, thermal design, or clamping behavior in standard applications.
Availability
SMA5J7.5A-E3/5A is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O protection, and DC power rail safeguarding requiring stable component supply, consistent RoHS compliance, and full traceability through 13" tape-and-reel delivery.
Supply support for SMA5J7.5A-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, MOSFETs, and protection devices with emphasis on high-reliability, high-power-density solutions.
The SMA5J series is engineered for high-energy transient suppression in space-constrained surface-mount applications, targeting automotive, industrial, and telecom systems where robustness against ISO 7637 and IEC 61000-4-x threats is critical.
FAQ
What is the clamping voltage of the SMA5J7.5A-E3/5A under a 100 A transient?
The SMA5J7.5A-E3/5A has a maximum clamping voltage (VC) of 12.9 V when subjected to a 100 A peak pulse current with a 10/1000 µs waveform. This value is measured at the device terminals under standardized test conditions and defines the upper voltage limit imposed on the protected circuit during surge events. The SMA5J7.5A-E3/5A maintains this clamping performance across its specified operating temperature range.
Is the SMA5J7.5A-E3/5A suitable for automotive applications?
The SMA5J7.5A-E3/5A is RoHS-compliant and rated for -55 °C to +150 °C operation, making it suitable for many automotive environments. However, it is not AEC-Q101 qualified. For automotive safety-critical systems, the SMA5J7.5AHE3_A/I variant must be used instead. The SMA5J7.5A-E3/5A remains appropriate for non-safety automotive subsystems such as infotainment power rails or lighting control modules.
What does the "E3/5A" suffix indicate in SMA5J7.5A-E3/5A?
The "E3" denotes RoHS-compliant, commercial-grade construction with matte tin-plated leads meeting JESD201 Class 2 whisker resistance. The "/5A" specifies packaging in 13-inch diameter plastic tape and reel, with a base quantity of 7500 units. This format supports high-volume automated assembly and ensures consistent handling per JEDEC standards.
How does the SMA5J7.5A-E3/5A differ from bidirectional TVS diodes like SMA5J7.5CA?
The SMA5J7.5A-E3/5A is unidirectional and functions only in reverse-bias clamping mode, with polarity marked by a cathode band. In contrast, SMA5J7.5CA is bidirectional and provides symmetrical clamping in both polarities - suitable for AC signal lines or differential buses. The SMA5J7.5A-E3/5A cannot replace SMA5J7.5CA in AC-coupled applications due to forward conduction behavior.
What PCB layout guidance applies to the SMA5J7.5A-E3/5A for optimal surge performance?
For optimal transient energy handling, the SMA5J7.5A-E3/5A must be mounted on minimum 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal, as specified in the Vishay datasheet. Short, wide traces to ground and protected line minimize inductance; thermal vias under pads improve heat dissipation during repetitive surges. Avoid routing sensitive signals near the TVS body to prevent coupling.
SMA5J7.5A-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:
- 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-E3/5A FAQ
1.How can I place an order for SMA5J7.5A-E3/5A through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA5J7.5A-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 SMA5J7.5A-E3/5A reliable?
The price and inventory of SMA5J7.5A-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 SMA5J7.5A-E3/5A is usually 5 days.
3.What payment methods are accepted for SMA5J7.5A-E3/5A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA5J7.5A-E3/5A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA5J7.5A-E3/5A?
SMA5J7.5A-E3/5A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA5J7.5A-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 SMA5J7.5A-E3/5A?
For technical support, including SMA5J7.5A-E3/5A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA5J7.5A-E3/5A requirements.
6.How does Aetrix verify that SMA5J7.5A-E3/5A is sourced from the original manufacturer or authorized distributors?
All SMA5J7.5A-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 SMA5J7.5A-E3/5A meets industry standards.
7.What is the process for return or replacement of SMA5J7.5A-E3/5A?
All SMA5J7.5A-E3/5A units undergo pre-shipment inspection (PSI). If there is an issue with SMA5J7.5A-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 SMA5J7.5A-E3/5A part is unused and in its original packaging.
Return procedure for SMA5J7.5A-E3/5A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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