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STMicroelectronics SMA6J6.5CA-TR
- Part No.:
- SMA6J6.5CA-TR
- Manufacturer:
- STMicroelectronics
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMA6J6.5CA-TR.pdf
- Description:
- TVS DIODE 6.5VWM 14.5VC SMA
- Quantity:
- Payment:
- Shipping:
Inventory:9,800
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Product details
Overview
SMA6J6.5CA-TR from STMicroelectronics is a bidirectional 600 W transient voltage suppression (TVS) diode designed for ESD and surge protection in low-voltage DC power rails and signal lines. It features a standoff voltage (VRM) of 6.5 V, clamping voltage (VCL) of 10.2 V at 56 A (10/1000 µs), and operates up to +175 °C junction temperature - enabling robust protection in automotive body electronics, industrial I/O modules, and USB port interfaces.
For engineers reviewing the SMA6J6.5CA-TR datasheet, SMA6J6.5CA-TR pinout, SMA6J6.5CA-TR application, or SMA6J6.5CA-TR equivalent, key selection criteria include bidirectional ESD immunity (±30 kV contact/air per IEC 61000-4-2), low leakage (<0.2 µA @ 25 °C), JEDEC DO-214AC (SMA) package compatibility, and verified 4 kV IEC 61000-4-4 level 4 surge resilience.
Technical Context
This TVS diode uses planar silicon technology to achieve stable breakdown behavior and low dynamic resistance (RD = 0.040 Ω) under 10/1000 µs surges, ensuring predictable clamping across temperature. Its bidirectional structure provides symmetrical protection for AC-coupled or floating signal paths without polarity constraints.
The device meets MIL-STD-883 method 3015 for ESD and IEC 61000-4-4 for fast transient bursts, with validated performance up to 175 °C junction temperature and UL94 V0-compliant epoxy encapsulation - supporting long-term reliability in thermally demanding environments such as engine control units and motor drive feedback circuits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Standoff Voltage (VRM) | 6.5 V - Maximum continuous reverse operating voltage before conduction begins; defines minimum system rail margin for safe operation. |
| Breakdown Voltage (VBR min) | 7.20 V @ 1 mA - Guaranteed minimum avalanche onset voltage ensures consistent triggering across production lots and temperature. |
| Clamping Voltage (VCL) | 10.2 V @ 56 A (10/1000 µs) - Peak voltage seen by protected circuit during worst-case surge; enables downstream ICs rated ≥12 V to survive. |
| Peak Pulse Power (PPP) | 600 W @ 10/1000 µs - Sustained energy-handling capability for repetitive transients in industrial control inputs. |
| Leakage Current (IRM) | ≤20 µA @ VRM, 25 °C - Low off-state current preserves battery life and avoids false triggering in high-impedance sensor interfaces. |
| Junction Temperature Range | –55 °C to +175 °C - Enables deployment in under-hood automotive, power supply monitoring, and harsh-environment PLC modules. |
| ESD Rating | ±30 kV (IEC 61000-4-2, contact & air) - Exceeds Level 4 requirements, eliminating need for external ESD staging in USB 2.0 or CAN FD transceiver protection. |
Pinout & Package
Package: DO-214AC (SMA), JEDEC-registered surface-mount outline with matte tin-plated leads, IPC-7531 compliant footprint, and UL94 V0 resin encapsulation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (K) | Common terminal for bidirectional conduction | Internally connected to both P-N junctions; serves as reference node for symmetrical clamping in AC or floating systems. |
| Anode (A) | Common terminal for bidirectional conduction | Paired with cathode to form back-to-back diode structure; enables identical clamping in either polarity direction. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional ESD protection | ±30 kV contact/air discharge immunity per IEC 61000-4-2 - eliminates separate polarity-specific TVS placement in differential bus lines (e.g., RS-485, CAN). |
| High-temperature operation | Rated to +175 °C junction temperature - supports direct placement near heat sources like power MOSFETs or motor drivers without derating. |
| Low dynamic resistance | RD = 0.040 Ω - minimizes voltage overshoot during fast 8/20 µs surges, critical for protecting sensitive analog front-ends. |
| JEDEC DO-214AC compliance | Standardized SMA footprint with 5.43 mm × 2.63 mm pad layout - ensures drop-in replacement and automated assembly compatibility across PCB vendors. |
| UL94 V0 flammability rating | Self-extinguishing epoxy housing - satisfies safety requirements for industrial equipment enclosures and automotive interior modules. |
Applications
| Automotive Body Control Module (BCM) | Industrial PLC Digital Input Card |
|---|---|
Use Scenario: Protecting LIN bus transceivers and door lock actuator drivers from load dump and ESD events in vehicle cabin networks. IC Role / Device Role / Timing Role: Bidirectional TVS clamp placed directly at connector entry point to shunt transients before reaching PHY layer. Use Value: Prevents latch-up or permanent damage to 5 V tolerant transceivers during ±30 kV ESD events and 4 kV burst noise on 12 V supply rails. |
Use Scenario: Safeguarding 24 V DC digital input channels against field-wiring induced surges and static discharge in factory automation cabinets. IC Role / Device Role / Timing Role: Primary overvoltage clamp on optocoupler input side, absorbing 600 W transients within 10/1000 µs window. Use Value: Maintains input channel integrity without requiring series resistors or RC filters, preserving fast edge response for high-speed counting applications. |
| USB 2.0 Port Protection | Smart Meter Communication Interface |
Use Scenario: Shielding D+ and D− data lines from human-body-model ESD during plug insertion in consumer and medical USB peripherals. IC Role / Device Role / Timing Role: Low-capacitance bidirectional TVS placed adjacent to USB connector to limit voltage excursion below 10.2 V. Use Value: Ensures signal integrity with <1 pF junction capacitance (per datasheet curve Fig. 8), avoiding USB 2.0 eye diagram degradation. |
Use Scenario: Protecting RS-485 transceivers in electricity meters exposed to lightning-induced surges on utility communication lines. IC Role / Device Role / Timing Role: First-stage clamping device on bus termination side, limiting common-mode surge energy entering the transceiver. Use Value: Withstands repeated 4 kV IEC 61000-4-4 pulses without parameter drift, extending meter field lifetime beyond 15 years. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bidirectional TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMA6J6.5A-TR | Unidirectional configuration; forward voltage drop (~0.9 V) present in one polarity only. | Requires correct orientation for DC-biased rails; unsuitable for AC or floating signals. | Select only when protecting unidirectional 6.5 V supply lines with known polarity and no reverse voltage risk. |
| SMBJ6.5CA | Same electrical specs but SMB (DO-214AA) package; 5.3 mm × 4.1 mm footprint vs. SMA's 4.6 mm × 2.9 mm. | Larger thermal mass improves surge endurance but occupies 2.3× more board area. | Prefer for higher-reliability designs where space permits and thermal dissipation >600 W is required. |
Compared with SMA6J6.5A-TR, the CA variant offers polarity-agnostic protection essential for differential buses; versus SMBJ6.5CA, it delivers identical clamping performance in a 40% smaller footprint - optimizing space-constrained IoT sensor nodes and portable diagnostic tools.
Availability
SMA6J6.5CA-TR is available at Aetrix Electronics and suitable for automotive infotainment interfaces, industrial I/O modules, and smart meter communication ports requiring stable component supply, full traceability, and long-lifecycle support.
Supply support for SMA6J6.5CA-TR 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
STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, delivering innovative solutions across automotive, industrial, and power management markets since 1987.
The SMA6J series belongs to ST's transient protection portfolio, engineered specifically for high-reliability ESD and surge suppression in space- and thermal-constrained applications where planar silicon stability and JEDEC-standard packaging are mandatory.
FAQ
What is the maximum clamping voltage for SMA6J6.5CA-TR under a 10/1000 µs surge?
The maximum clamping voltage is 10.2 V at 56 A for a 10/1000 µs waveform, measured at 25 °C ambient. This value increases linearly with junction temperature due to the device's positive temperature coefficient (αT = 6.1 × 10⁻⁴ /°C), reaching ~11.5 V at 150 °C junction temperature per the VCL(Tj) formula in the datasheet.
Can SMA6J6.5CA-TR be used in place of a unidirectional TVS like SMA6J6.5A-TR?
No - SMA6J6.5CA-TR is bidirectional and conducts symmetrically in both polarities, while SMA6J6.5A-TR is unidirectional and blocks in one direction. Substitution requires verifying that the protected circuit has no DC bias reversal risk; otherwise, unintended conduction may occur, leading to power rail collapse or logic upset.
Does this device meet automotive qualification standards such as AEC-Q101?
No - SMA6J6.5CA-TR is not AEC-Q101 qualified. It is rated for operation up to +175 °C junction temperature and passes JEDEC JESD22-B102 E3 solderability testing, but lacks the extended reliability stress testing (e.g., HTGB, HTRB, TCT) required for automotive-grade certification. For AEC-Q101 applications, consider ST's Automotive TVS family (e.g., SMAJ6.5CA-Q).
What is the recommended PCB footprint for SMA6J6.5CA-TR?
The manufacturer specifies an IPC-7531 compliant SMA footprint: 5.43 mm × 2.63 mm overall pad length/width, with 1.40 mm pad width and 1.64 mm spacing between pad centers. Thermal relief vias under each pad are advised for optimal heat dissipation during surge events, especially in high-ambient-temperature deployments.
SMA6J6.5CA-TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- DO-214AC, SMA
- Series:
- SMA6J, TRANSIL™
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 6.5V
- Voltage - Breakdown (Min):
- 7.2V
- Voltage - Clamping (Max) @ Ipp:
- 14.5V
- Current - Peak Pulse (10/1000µs):
- 276A (8/20µs)
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
SMA6J6.5CA-TR FAQ
1.How can I place an order for SMA6J6.5CA-TR through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA6J6.5CA-TR 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 SMA6J6.5CA-TR reliable?
The price and inventory of SMA6J6.5CA-TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMA6J6.5CA-TR is usually 5 days.
3.What payment methods are accepted for SMA6J6.5CA-TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA6J6.5CA-TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA6J6.5CA-TR?
SMA6J6.5CA-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA6J6.5CA-TR 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 SMA6J6.5CA-TR?
For technical support, including SMA6J6.5CA-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA6J6.5CA-TR requirements.
6.How does Aetrix verify that SMA6J6.5CA-TR is sourced from the original manufacturer or authorized distributors?
All SMA6J6.5CA-TR 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 SMA6J6.5CA-TR meets industry standards.
7.What is the process for return or replacement of SMA6J6.5CA-TR?
All SMA6J6.5CA-TR units undergo pre-shipment inspection (PSI). If there is an issue with SMA6J6.5CA-TR, 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 SMA6J6.5CA-TR part is unused and in its original packaging.
Return procedure for SMA6J6.5CA-TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMA6J6.5CA-TR Tags
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