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Vishay General Semiconductor - Diodes Division SMA5J7.5CA-E3/5A
- Part No.:
- SMA5J7.5CA-E3/5A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMA5J7.5CA-E3/5A.pdf
- Description:
- TVS DIODE 7.5VWM 12.9VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:5,638
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Product details
Overview
SMA5J7.5CA-E3/5A from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMA (DO-214AC) package, designed for clamping voltage transients on signal and power lines. It features a 7.5 V stand-off voltage (VWM), 8.33–9.21 V breakdown voltage (VBR), 12.9 V maximum clamping voltage (VC) at 100 A peak pulse current, and 500 W peak pulse power rating - used to protect automotive sensor interfaces, industrial I/O ports, and telecom line drivers.
For engineers reviewing the SMA5J7.5CA-E3/5A datasheet, SMA5J7.5CA-E3/5A pinout, SMA5J7.5CA-E3/5A application, or SMA5J7.5CA-E3/5A equivalent, key selection criteria include bidirectional clamping capability, 12.9 V clamping at 100 A, RoHS-compliant matte tin terminals, MSL Level 1 moisture sensitivity, and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
This device operates as a silicon avalanche diode optimized for transient suppression using a glass-passivated junction. Its bidirectional symmetry ensures identical electrical characteristics in both polarities, with reverse leakage ≤1.0 μA at 7.5 V and thermal resistance of 80 °C/W (junction-to-ambient) under standard mounting conditions.
It delivers fast response (<1 ns) to 10/1000 μs waveform surges, maintains stable clamping performance across -55 °C to +150 °C operating temperature range, and meets AEC-Q101 qualification when ordered with HE3/HM3 suffix - though SMA5J7.5CA-E3/5A itself is commercial-grade RoHS-compliant.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 7.5 V - maximum continuous reverse working voltage before clamping begins |
| VBR (min/max) | 8.33 V / 9.21 V at 1.0 mA test current - defines reliable avalanche onset window |
| VC @ IPPM | 12.9 V at 100 A - peak clamped voltage during 10/1000 μs surge, limiting stress on downstream ICs |
| PPPM | 500 W - peak pulse power handling capacity under standardized surge waveform |
| IPPM | 100 A - maximum non-repetitive surge current the device safely clamps without failure |
| TJ Range | -55 °C to +150 °C - operational junction temperature range for industrial and automotive ambient environments |
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. No polarity marking - bidirectional construction eliminates cathode/anode identification.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Transient conduction path | Identical avalanche behavior in both directions; either terminal serves as input or return for surge current |
| Case (body) | Thermal and mechanical interface | Plastic molding meets UL 94 V-0; requires 5.0 mm × 5.0 mm copper pad per terminal for rated power dissipation |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines without polarity concerns |
| Glass-passivated junction | Ensures long-term reliability and stable VBR tolerance under thermal cycling and humidity exposure |
| MSL Level 1 rating | Allows unlimited floor life and reflow at 260 °C peak without baking preconditioning |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (e.g., ESD, inductive kickback) |
Applications
| Automotive Sensor Protection | Industrial Digital I/O |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor outputs (e.g., pressure, temperature) from load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Bidirectional TVS placed between signal line and ground to clamp ±100 V transients within nanoseconds. Use Value: Prevents latch-up or permanent damage to microcontrollers and analog front-ends by limiting voltage to ≤12.9 V during 100 A surges. | Use Scenario: Safeguarding PLC digital input modules against field-wiring transients and relay contact bounce. IC Role / Device Role / Timing Role: Standoff-rated clamping element on 24 V DC input lines, absorbing repetitive switching spikes up to 500 W peak. Use Value: Maintains system uptime by eliminating false triggering and component degradation in harsh factory environments. |
| Telecom Line Interface | Consumer USB/Display Port |
Use Scenario: Shielding Ethernet PHYs and xDSL line drivers from lightning-induced surges and induced noise. IC Role / Device Role / Timing Role: Primary-level surge suppressor on differential pairs, coordinated with secondary GDT or polymer PTC. Use Value: Achieves IEC 61000-4-5 Level 3 compliance (1 kV/2 kV) while preserving signal integrity below 100 MHz. | Use Scenario: Protecting high-speed data lanes (e.g., USB 2.0, HDMI, DisplayPort) from ESD events per IEC 61000-4-2 ±8 kV contact discharge. IC Role / Device Role / Timing Role: Low-capacitance transient suppressor placed directly at connector entry point. Use Value: Limits clamping voltage to 12.9 V without adding >10 pF parasitic capacitance, avoiding signal rise-time degradation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMA5J7.5CA-M3/5A | Halogen-free, RoHS-compliant variant with identical electrical specs and package | No functional difference; selected where halogen-free material compliance is mandated | Direct substitution if halogen-free bill-of-materials required |
| SMCJ7.5CA-E3/57T | Same VWM/VC, but in larger SMC (DO-214AB) package with 1500 W PPPM and higher IPPM (167 A) | Used where higher surge margin or board-level robustness is prioritized over footprint size | Choose when design must withstand repeated 1.2/50 μs surges above 100 A |
Compared with SMA5J7.5CA-E3/5A, the M3 variant offers identical protection in halogen-free form, while the SMCJ7.5CA-E3/57T provides greater surge headroom at the cost of PCB area - enabling trade-offs between miniaturization and ruggedness in field-deployed systems.
Availability
SMA5J7.5CA-E3/5A is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial digital I/O modules, and telecom line protection requiring stable component supply and full traceability.
Supply support for SMA5J7.5CA-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 reliability and application-specific optimization.
The SMA5J series is engineered for high-power-density transient suppression in space-constrained SMT designs, targeting automotive, industrial, and communications systems where rapid clamping and thermal stability are critical.
FAQ
What is the clamping voltage of the SMA5J7.5CA-E3/5A under a 100 A surge?
The SMA5J7.5CA-E3/5A clamps to a maximum of 12.9 V when subjected to a 10/1000 μs waveform with 100 A peak pulse current. This value is measured per JEDEC standards and reflects worst-case voltage seen by protected circuitry during surge events. The SMA5J7.5CA-E3/5A achieves this with low incremental resistance, ensuring minimal overshoot beyond the clamping threshold.
Is the SMA5J7.5CA-E3/5A unidirectional or bidirectional?
The SMA5J7.5CA-E3/5A is a bidirectional transient voltage suppressor, meaning it provides symmetrical clamping in both polarities. Unlike unidirectional variants (e.g., SMA5J7.5A), it has no polarity marking and functions identically whether positive or negative transients occur - ideal for AC-coupled or floating signal paths. This behavior is confirmed in the Vishay datasheet section "DEVICES FOR BIDIRECTION APPLICATIONS".
Does the SMA5J7.5CA-E3/5A meet AEC-Q101 qualification?
No, the SMA5J7.5CA-E3/5A is a commercial-grade part with RoHS compliance and MSL Level 1 rating, but it is not AEC-Q101 qualified. AEC-Q101 versions carry the HE3 or HM3 suffix (e.g., SMA5J7.5CAHE3_A/I). The SMA5J7.5CA-E3/5A is intended for industrial and consumer applications where automotive-grade qualification is not required.
What is the thermal resistance of the SMA5J7.5CA-E3/5A?
The SMA5J7.5CA-E3/5A has a typical junction-to-ambient thermal resistance (RθJA) of 80 °C/W when mounted on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. This value assumes standard JEDEC test conditions and is critical for calculating safe operating temperature rise during repetitive surge events. The SMA5J7.5CA-E3/5A also exhibits RθJL = 25 °C/W (junction-to-lead).
Can the SMA5J7.5CA-E3/5A be used in place of SMA5J7.5A?
No - SMA5J7.5CA-E3/5A and SMA5J7.5A are functionally distinct: the former is bidirectional, the latter unidirectional. Substituting them without circuit review risks improper clamping during negative transients or forward conduction issues. The SMA5J7.5CA-E3/5A must only replace other CA-suffix parts; its breakdown and clamping parameters are specified for symmetrical operation, unlike the unidirectional SMA5J7.5A.
SMA5J7.5CA-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:
- -
- Bidirectional Channels:
- 1
- 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)
SMA5J7.5CA-E3/5A FAQ
1.How can I place an order for SMA5J7.5CA-E3/5A through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA5J7.5CA-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 SMA5J7.5CA-E3/5A reliable?
The price and inventory of SMA5J7.5CA-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 SMA5J7.5CA-E3/5A is usually 5 days.
3.What payment methods are accepted for SMA5J7.5CA-E3/5A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA5J7.5CA-E3/5A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA5J7.5CA-E3/5A?
SMA5J7.5CA-E3/5A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA5J7.5CA-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 SMA5J7.5CA-E3/5A?
For technical support, including SMA5J7.5CA-E3/5A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA5J7.5CA-E3/5A requirements.
6.How does Aetrix verify that SMA5J7.5CA-E3/5A is sourced from the original manufacturer or authorized distributors?
All SMA5J7.5CA-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 SMA5J7.5CA-E3/5A meets industry standards.
7.What is the process for return or replacement of SMA5J7.5CA-E3/5A?
All SMA5J7.5CA-E3/5A units undergo pre-shipment inspection (PSI). If there is an issue with SMA5J7.5CA-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 SMA5J7.5CA-E3/5A part is unused and in its original packaging.
Return procedure for SMA5J7.5CA-E3/5A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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