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Vishay General Semiconductor - Diodes Division SMA5J11CA-E3/5A
- Part No.:
- SMA5J11CA-E3/5A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMA5J11CA-E3/5A.pdf
- Description:
- TVS DIODE 11VWM 18.2VC DO214AC
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
SMA5J11CA-E3/5A from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMA (DO-214AC) package, designed for high-energy surge protection on signal and power lines. It features a 11 V stand-off voltage (VWM), 18.2 V maximum clamping voltage (VC) at 27.5 A peak pulse current (IPPM), and 500 W peak pulse power (10/1000 µs waveform), commonly deployed to protect automotive sensor interfaces and industrial I/O circuits.
For engineers reviewing the SMA5J11CA-E3/5A datasheet, SMA5J11CA-E3/5A pinout, SMA5J11CA-E3/5A application, or SMA5J11CA-E3/5A equivalent, key selection criteria include bidirectional polarity, clamping performance under 10/1000 µs transients, thermal resistance (RθJA = 80 °C/W), AEC-Q101 qualification eligibility, and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
This device operates as a voltage-clamping protector with symmetrical breakdown behavior in both directions due to its bidirectional construction. Its glass-passivated junction enables fast response time (<1 ns) and low incremental surge resistance, critical for suppressing ESD and load-switching transients before sensitive downstream components are damaged.
The SMA5J11CA-E3/5A is rated for -55 °C to +150 °C operating junction temperature and meets MSL Level 1 per J-STD-020 with 260 °C lead-free reflow peak. Its unmarked SMA (DO-214AC) case uses matte tin-plated leads compliant with J-STD-002 and JESD 22-B102 solderability standards.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 11 V - Maximum continuous reverse working voltage before clamping begins; defines safe operating margin for 12 V nominal systems. |
| VBR (min/max) | 12.2 V / 13.5 V - Breakdown voltage range at 1 mA test current; ensures reliable turn-on above system operating voltage. |
| VC @ IPPM | 18.2 V - Clamped voltage at 27.5 A peak pulse current (10/1000 µs); limits stress on protected ICs during surge events. |
| PPPM | 500 W - Peak pulse power handling capability; supports robust protection against ISO 7637-2 Pulse 1/2a/5a and IEC 61000-4-5 surges. |
| IPPM | 27.5 A - Peak pulse current capacity (10/1000 µs); determines survivability under standardized lightning-induced transients. |
| RθJA | 80 °C/W - Junction-to-ambient thermal resistance; informs PCB pad layout requirements for sustained power dissipation. |
| TJ max. | +150 °C - Maximum junction temperature; enables operation in under-hood automotive and industrial environments. |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, bidirectional configuration with no polarity marking. Case dimensions: 4.93 mm × 3.99 mm × 2.29 mm (L × W × H), cathode band omitted per bidirectional design.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Transient conduction path | Both terminals function identically; conducts surge current in either direction when voltage exceeds VBR. |
| Case (body) | Thermal and mechanical interface | Non-electrical; transfers heat to PCB copper pads (recommended 5.0 mm × 5.0 mm per terminal) for thermal management. |
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 stable breakdown characteristics and long-term reliability under repeated surge stress. |
| MSL Level 1 rating | Allows unlimited floor life and compatibility with standard lead-free reflow profiles up to 260 °C peak. |
| AEC-Q101 qualification option | Supports automotive-grade sourcing via HE3/HM3 suffix variants; base E3 version is commercial grade. |
| Low profile SMA package | 0.208" length × 0.157" width × 0.090" height fits space-constrained layouts while maintaining 500 W surge rating. |
Applications
| Automotive Sensor Protection | Industrial I/O Interface |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from load-dump and jump-start transients in vehicle ECUs. IC Role / Device Role / Timing Role: Voltage-clamping TVS element placed directly at connector entry point to shunt surge energy before reaching signal conditioning circuitry. Use Value: Limits transient voltage to ≤18.2 V during 27.5 A surges, preventing latch-up or gate oxide damage in 12 V rail-connected ICs. | Use Scenario: Safeguarding PLC digital input modules and fieldbus interfaces (RS-485, Profibus) against induced lightning surges and switching noise in factory automation. IC Role / Device Role / Timing Role: Bidirectional overvoltage clamp on differential signal pairs or supply rails to maintain signal integrity during EMC testing. Use Value: Withstands repetitive 500 W surges without degradation, enabling compliance with IEC 61000-4-5 Level 3 (2 kV line-earth). |
| Consumer Power Adapter Input | Telecom Line Card Protection |
Use Scenario: Front-end surge suppression on AC-DC adapter primary-side rectifier outputs exposed to mains-borne transients. IC Role / Device Role / Timing Role: Secondary-stage clamping device after MOV, providing precise voltage limiting and fast response where MOVs exhibit latency. Use Value: Clamps within <1 ns to 18.2 V, reducing stress on downstream bridge rectifiers and bulk capacitors during fast-rising surges. | Use Scenario: Protecting Ethernet PHYs and DSL line drivers from ESD and induced surges on twisted-pair telecom lines. IC Role / Device Role / Timing Role: Bidirectional TVS placed across differential pairs to suppress common-mode and differential-mode transients without distorting signal waveforms. Use Value: Low capacitance (typ. <100 pF at VWM) preserves signal integrity up to 100 Mbps while meeting IEC 61000-4-2 ±15 kV contact discharge. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMA5J11CA-M3/5A | Halogen-free, RoHS-compliant variant with identical electrical specs and package; same thermal and surge ratings. | No functional difference; selected when halogen-free material compliance is required for end-product environmental certification. | Choose SMA5J11CA-M3/5A if RoHS + halogen-free mandate applies; otherwise SMA5J11CA-E3/5A suffices for standard commercial use. |
| SMA5J11CAHE3_A/I | AEC-Q101 qualified version with enhanced reliability screening; same VWM, VC, PPPM, and package; requires automotive ordering code suffix. | Required for automotive OEM designs needing component-level qualification per AEC-Q101; not necessary for industrial or consumer applications. | Select SMA5J11CAHE3_A/I only for automotive programs requiring formal qualification; SMA5J11CA-E3/5A is appropriate for non-automotive volume production. |
Compared with SMA5J11CA-M3/5A and SMA5J11CAHE3_A/I, the SMA5J11CA-E3/5A offers identical surge protection performance in a cost-optimized commercial-grade variant, making it ideal for high-volume industrial and consumer applications where halogen-free or AEC-Q101 compliance is not mandated.
Availability
SMA5J11CA-E3/5A is available at Aetrix Electronics and suitable for automotive sensor protection, industrial I/O interface hardening, and telecom line card surge suppression requiring stable component supply and consistent tape-and-reel delivery.
Supply support for SMA5J11CA-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, power density, and application-specific optimization.
The SMA5J series is engineered for high-power-density transient suppression in space-constrained, high-reliability applications-particularly targeting automotive, industrial, and telecom systems requiring robust 500 W surge handling in compact surface-mount packages.
FAQ
What is the polarity configuration of the SMA5J11CA-E3/5A?
The SMA5J11CA-E3/5A is a bidirectional TVS diode, meaning it provides symmetrical clamping in both forward and reverse directions. Unlike unidirectional variants, it has no cathode band marking and is intended for AC-coupled or floating signal line protection where polarity reversal may occur. This configuration is confirmed in Vishay's datasheet Document Number 88875, which specifies "CA" suffix devices for bidirectional use.
Does the SMA5J11CA-E3/5A meet AEC-Q101 qualification?
The SMA5J11CA-E3/5A itself is a commercial-grade part and is not AEC-Q101 qualified. However, Vishay offers the functionally identical SMA5J11CAHE3_A/I variant with full AEC-Q101 qualification for automotive applications. The E3/5A suffix denotes RoHS-compliant commercial grade only; qualification status is explicitly tied to the HE3 or HM3 suffixes per Vishay's ordering information table.
What is the maximum clamping voltage of the SMA5J11CA-E3/5A and under what test condition?
The SMA5J11CA-E3/5A has a maximum clamping voltage (VC) of 18.2 V, measured at a peak pulse current (IPPM) of 27.5 A using the standardized 10/1000 µs double-exponential surge waveform. This value is specified in the Electrical Characteristics table of Vishay's datasheet 88875 and defines the upper voltage limit imposed on protected circuitry during worst-case transient events.
Can the SMA5J11CA-E3/5A be used in place of a unidirectional TVS like SMA5J11A?
No-the SMA5J11CA-E3/5A is not a drop-in replacement for unidirectional types such as SMA5J11A. While both share the same VWM (11 V) and package, the CA version lacks polarity marking and exhibits symmetrical breakdown, making it unsuitable for DC-biased circuits requiring cathode-anode directionality. Substitution requires verification of circuit topology and transient directionality per application requirements.
What PCB pad layout is recommended for optimal thermal performance of the SMA5J11CA-E3/5A?
Vishay specifies mounting the SMA5J11CA-E3/5A on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal to achieve rated 500 W pulse power and maintain RθJA = 80 °C/W. This layout ensures adequate heat spreading during surge events and is validated in the "Mechanical Data" section of datasheet 88875. Smaller pads will derate power handling and increase junction temperature.
SMA5J11CA-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):
- 11V
- Voltage - Breakdown (Min):
- 12.2V
- Voltage - Clamping (Max) @ Ipp:
- 18.2V
- Current - Peak Pulse (10/1000µs):
- 27.5A
- 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)
SMA5J11CA-E3/5A FAQ
1.How can I place an order for SMA5J11CA-E3/5A through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA5J11CA-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 SMA5J11CA-E3/5A reliable?
The price and inventory of SMA5J11CA-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 SMA5J11CA-E3/5A is usually 5 days.
3.What payment methods are accepted for SMA5J11CA-E3/5A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA5J11CA-E3/5A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA5J11CA-E3/5A?
SMA5J11CA-E3/5A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA5J11CA-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 SMA5J11CA-E3/5A?
For technical support, including SMA5J11CA-E3/5A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA5J11CA-E3/5A requirements.
6.How does Aetrix verify that SMA5J11CA-E3/5A is sourced from the original manufacturer or authorized distributors?
All SMA5J11CA-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 SMA5J11CA-E3/5A meets industry standards.
7.What is the process for return or replacement of SMA5J11CA-E3/5A?
All SMA5J11CA-E3/5A units undergo pre-shipment inspection (PSI). If there is an issue with SMA5J11CA-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 SMA5J11CA-E3/5A part is unused and in its original packaging.
Return procedure for SMA5J11CA-E3/5A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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