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Vishay General Semiconductor - Diodes Division SMA5J11CAHE3/5A
- Part No.:
- SMA5J11CAHE3/5A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMA5J11CAHE3/5A.pdf
- Description:
- TVS DIODE 11VWM 18.2VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:3,584
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Product details
Overview
SMA5J11CAHE3/5A 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), 12.2–13.5 V breakdown voltage (VBR), 500 W peak pulse power (PPPM), and clamps transients to ≤18.2 V at 27.5 A (10/1000 µs waveform), commonly deployed in automotive sensor interface protection.
For engineers reviewing the SMA5J11CAHE3/5A datasheet, SMA5J11CAHE3/5A pinout, SMA5J11CAHE3/5A application, or SMA5J11CAHE3/5A equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, RoHS-compliant HE3 suffix, 150 °C max junction temperature, and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
This device operates as a voltage-clamped crowbar during transient events, leveraging an avalanche breakdown mechanism with low incremental surge resistance and sub-nanosecond response time. Its bidirectional symmetry ensures identical electrical characteristics in both polarities, eliminating polarity-sensitive layout constraints.
Designed for surface-mount use on PCBs with minimum pad layout per Vishay spec, it achieves thermal resistance of 80 °C/W (junction-to-ambient) and 25 °C/W (junction-to-lead), enabling reliable operation up to 150 °C junction temperature under repetitive surge conditions when derated per Fig. 2.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 11 V - Maximum continuous reverse operating voltage before clamping initiates |
| VBR min/max | 12.2 V / 13.5 V - Breakdown occurs within this range at 1 mA test current, defining turn-on threshold |
| VC @ IPPM | 18.2 V - Clamped voltage across device at 27.5 A peak pulse current (10/1000 µs), limiting downstream stress |
| PPPM | 500 W - Peak pulse power handling capacity under standardized surge waveform, critical for IEC 61000-4-5 compliance margin |
| TJ max | +150 °C - Maximum allowable junction temperature, supporting under-hood automotive environments |
| Package | SMA (DO-214AC) - Low-profile surface-mount outline with 5.28 mm length, compatible with standard pick-and-place equipment |
| AEC-Q101 | Qualified - Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per AEC specification |
Pinout & Package
Two-terminal bidirectional device in SMA (DO-214AC) package; no polarity marking. Terminals are matte tin-plated leads, solderable per J-STD-002 and JESD 22-B102, with MSL level 1 rating (peak reflow 260 °C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Transient conduction path | Identical bidirectional avalanche behavior - either terminal serves as input/output; no cathode band marking |
| Case (body) | Thermal and mechanical interface | Plastic-molded DO-214AC body provides UL 94 V-0 flammability rating and mechanical mounting stability |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection on AC-coupled or floating signal lines without polarity concerns |
| AEC-Q101 qualification | Validates suitability for automotive applications including engine control units and ADAS sensor interfaces |
| 500 W peak pulse power | Supports robust immunity against ISO 7637-2 Pulse 5a/b (load dump) and IEC 61000-4-5 Level 4 surges |
| Low profile SMA package | 0.208" × 0.157" footprint minimizes PCB area while maintaining thermal performance via copper pad coupling |
| Glass passivated junction | Ensures stable VBR over lifetime and improved humidity resistance versus epoxy-passivated alternatives |
Applications
| Automotive Sensor Protection | Industrial CAN Bus Interface |
|---|---|
Use Scenario: Protecting LIN/CAN transceiver inputs and analog sensor outputs (e.g., pressure, temperature) from load dump and inductive switching transients in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional TVS clamping element placed directly at connector entry point or IC pin. Use Value: Limits transient voltage to ≤18.2 V, preventing damage to 12 V-rated transceivers and ensuring signal integrity during 500 W surge events. |
Use Scenario: Safeguarding differential CAN_H/CAN_L lines in factory automation controllers exposed to motor drive noise and ground bounce. IC Role / Device Role / Timing Role: Common-mode surge suppressor mounted across bus pair with symmetric clamping action. Use Value: Maintains bus differential integrity by clamping common-mode spikes without distorting data timing due to sub-ns response. |
| Consumer Power Adapter Input | Telecom DSL Line Protection |
Use Scenario: Input-stage surge suppression on 12 V DC output rails of wall adapters subjected to lightning-induced surges on connected devices. IC Role / Device Role / Timing Role: Primary overvoltage clamp on secondary-side DC output before LDO or DC-DC regulator. Use Value: Absorbs 500 W transients without degradation, preserving adapter reliability and meeting UL 62368-1 transient immunity requirements. |
Use Scenario: Protection of ADSL/VDSL line drivers and receivers against induced surges on twisted-pair telephone lines. IC Role / Device Role / Timing Role: Bidirectional shunt protector placed between tip/ring and ground, rated for repeated telecom surge standards. Use Value: Clamps fast-rising surges to <18.2 V while maintaining low capacitance (<100 pF at VWM), avoiding signal attenuation above 1 MHz. |
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; identical electrical specs and AEC-Q101 qualification | No functional difference; selected where halogen-free material compliance is mandated | Choose SMA5J11CA-M3/5A when halogen-free bill-of-materials is required; otherwise SMA5J11CAHE3/5A preferred for general automotive use |
| SMCJ11CAHE3/5A | Same VWM/VBR/VC specs but in larger SMC (DO-214AB) package; higher thermal mass and RθJA = 35 °C/W | Better thermal performance under sustained surge duty cycles; requires larger PCB footprint | Select SMCJ11CAHE3/5A only when board space permits and higher thermal dissipation is needed beyond SMA5J11CAHE3/5A's 80 °C/W limit |
Compared with SMA5J11CA-M3/5A, the SMA5J11CAHE3/5A offers identical surge protection performance with standard RoHS compliance, while SMCJ11CAHE3/5A trades smaller footprint for superior thermal management-making SMA5J11CAHE3/5A optimal for space-constrained automotive modules requiring AEC-Q101 validation.
Availability
SMA5J11CAHE3/5A is available at Aetrix Electronics and suitable for automotive electronics, industrial communication interfaces, and consumer power supply designs requiring stable component supply with AEC-Q101 assurance and RoHS compliance.
Supply support for SMA5J11CAHE3/5A 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, and protection devices with emphasis on reliability, power density, and automotive-grade qualification.
The SMA5J series was developed specifically for high-power-density transient suppression in space-constrained automotive and industrial systems, balancing 500 W surge capability with low-profile SMT packaging and AEC-Q101 validation.
FAQ
What does the "CA" suffix indicate in SMA5J11CAHE3/5A?
The "CA" suffix denotes a bidirectional configuration: SMA5J11CAHE3/5A provides symmetrical clamping in both forward and reverse directions, unlike unidirectional variants (e.g., SMA5J11A). This enables use on AC signals, differential buses, or floating nodes without polarity concerns, and all electrical characteristics-including VBR, VC, and IPPM-apply identically in either direction per Vishay documentation.
Is SMA5J11CAHE3/5A suitable for automotive applications?
Yes, SMA5J11CAHE3/5A is AEC-Q101 qualified and carries the "HE3" suffix indicating RoHS-compliant, automotive-grade construction. It meets requirements for under-hood and cabin ECU applications, including thermal cycling, high-temperature reverse bias, and surge immunity testing. Its 150 °C maximum junction temperature and validated reliability make SMA5J11CAHE3/5A appropriate for engine control, ADAS sensors, and infotainment power rails.
How does the SMA5J11CAHE3/5A compare to SMA5J11A in terms of circuit implementation?
SMA5J11CAHE3/5A is bidirectional with no polarity marking, allowing direct placement across any two points needing symmetrical surge suppression. SMA5J11A is unidirectional and marked with a cathode band; it conducts only in reverse bias and must be oriented correctly. SMA5J11CAHE3/5A eliminates orientation errors in automated assembly and supports AC-coupled lines where SMA5J11A would require dual-device solutions.
What is the meaning of the "/5A" in SMA5J11CAHE3/5A?
The "/5A" denotes the preferred packaging option: 7500 units per 13-inch diameter plastic tape and reel. This contrasts with "/61", which indicates 1800 units per 7-inch reel. Both share identical electrical and mechanical specifications; the suffix solely defines quantity and reel size for logistics and SMT feeder compatibility-SMA5J11CAHE3/5A is optimized for high-volume production runs.
Does SMA5J11CAHE3/5A require a heatsink for 500 W surge handling?
No external heatsink is required for single-event 500 W surges, as the device relies on short-duration energy absorption (10/1000 µs waveform) and thermal mass of the PCB copper pads. Vishay specifies mounting on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal to achieve rated PPPM. Continuous power dissipation is not applicable; SMA5J11CAHE3/5A is rated for non-repetitive pulses, with derating applied per Fig. 2 for elevated ambient temperatures.
SMA5J11CAHE3/5A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AC, SMA
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
SMA5J11CAHE3/5A FAQ
1.How can I place an order for SMA5J11CAHE3/5A through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA5J11CAHE3/5A 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 SMA5J11CAHE3/5A reliable?
The price and inventory of SMA5J11CAHE3/5A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMA5J11CAHE3/5A is usually 5 days.
3.What payment methods are accepted for SMA5J11CAHE3/5A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA5J11CAHE3/5A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA5J11CAHE3/5A?
SMA5J11CAHE3/5A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA5J11CAHE3/5A 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 SMA5J11CAHE3/5A?
For technical support, including SMA5J11CAHE3/5A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA5J11CAHE3/5A requirements.
6.How does Aetrix verify that SMA5J11CAHE3/5A is sourced from the original manufacturer or authorized distributors?
All SMA5J11CAHE3/5A 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 SMA5J11CAHE3/5A meets industry standards.
7.What is the process for return or replacement of SMA5J11CAHE3/5A?
All SMA5J11CAHE3/5A units undergo pre-shipment inspection (PSI). If there is an issue with SMA5J11CAHE3/5A, 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 SMA5J11CAHE3/5A part is unused and in its original packaging.
Return procedure for SMA5J11CAHE3/5A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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