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STMicroelectronics SMA6J6.0CA-TR
- Part No.:
- SMA6J6.0CA-TR
- Manufacturer:
- STMicroelectronics
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMA6J6.0CA-TR.pdf
- Description:
- TVS DIODE 6VWM 13.7VC SMA
- Quantity:
- Payment:
- Shipping:
Inventory:13,190
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Product details
Overview
SMA6J6.0CA-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 6.0 V, clamping voltage (VCL) of 9.5 V at 61 A (8/20 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 SMA6J6.0CA-TR datasheet, SMA6J6.0CA-TR pinout, SMA6J6.0CA-TR application, or SMA6J6.0CA-TR equivalent, key selection criteria include bidirectional ESD immunity (±30 kV contact/air per IEC 61000-4-2), low leakage (<1 µA at 85 °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 characteristics and low dynamic resistance (RD = 0.034 Ω at 25 °C), ensuring predictable clamping behavior during fast transients. Its bidirectional structure supports symmetric surge handling across both polarities without requiring polarity-aware PCB layout.
The device meets MIL-STD-883 method 3015 and IEC 61000-4-2/4-4 compliance out-of-the-box, with validated performance at 30 kV ESD (contact/air) and 4 kV electrical fast transient (EFT) stress - making it suitable for unregulated 5–12 V systems where board-level immunity must be guaranteed without external filtering.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Standoff Voltage (VRM) | 6.0 V - Maximum continuous reverse working voltage before conduction begins; sets minimum system operating margin for 5 V rail protection. |
| Breakdown Voltage (VBR min) | 6.70 V at 1 mA - Guaranteed conduction onset under DC stress; ensures reliable triggering before downstream IC damage thresholds. |
| Clamping Voltage (VCL) | 9.5 V at 61 A (8/20 µs) - Peak voltage seen by protected circuit during worst-case surge; stays below 12 V logic IC absolute maximum ratings. |
| Peak Pulse Power (PPP) | 600 W (10/1000 µs) - Sustained energy absorption capability for slow surges like load dump transients in automotive subsystems. |
| Leakage Current (IRM) | 20 µA max at 6.0 V, 25 °C - Minimal standby current draw; avoids battery drain in always-on sensor nodes or IoT endpoints. |
| Junction Temperature Range | −55 °C to +175 °C - Enables deployment in under-hood automotive ECUs, motor drives, and industrial PLCs without derating. |
| ESD Withstand (IEC 61000-4-2) | ±30 kV contact & air discharge - Exceeds Level 4 requirement; eliminates need for secondary ESD protection on front-panel connectors. |
Pinout & Package
Package: DO-214AC (SMA), surface-mount, JEDEC registered outline with matte tin-plated leads (JESD-22-B102 E3 compliant). Dimensions: D = 2.25–2.90 mm, E = 4.80–5.35 mm, L = 0.75–1.50 mm; IPC-7531 compliant footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Cathode Band Side) | Reverse-biased terminal in unidirectional mode; common node in bidirectional configuration | Connected to protected line (e.g., USB D+); forms symmetrical clamp path with Cathode in CA variant. |
| Cathode (Marked End) | Reference terminal tied to system ground or return path | Provides low-inductance path to chassis or PCB ground plane; critical for maintaining <9.5 V clamping under 61 A surge. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional ESD protection | Enables single-device protection of AC-coupled or floating signal lines (e.g., RS-485, CAN FD PHY) without polarity constraints. |
| Low dynamic resistance (RD) | 0.034 Ω at 25 °C - Minimizes voltage overshoot during sub-100 ns ESD events; improves clamping precision vs. higher-RD alternatives. |
| High-temperature operation | Rated to +175 °C junction - Supports placement near heat sources (e.g., power MOSFETs, DC-DC inductors) without thermal derating. |
| UL94 V0 resin housing | Self-extinguishing epoxy prevents flame propagation in enclosed enclosures - required for UL-certified industrial control panels. |
| MSL Level 1 rating | Unlimited floor life at ≤30 °C/85 % RH - Eliminates bake requirements prior to reflow, reducing manufacturing cost and risk of moisture-induced popcorning. |
Applications
| Automotive Body Control Module | Industrial PLC Digital Input |
|---|---|
|
Use Scenario: Protecting LIN bus transceivers and door lock actuators from load dump and jump-start surges. IC Role / Device Role / Timing Role: Bidirectional TVS placed between LIN line and ground to clamp ±100 V transients within 1 ns. Use Value: Prevents latch-up in TJA1020 transceivers by limiting peak voltage to 9.5 V while sustaining 61 A surge current. |
Use Scenario: Shielding 24 V digital input channels from field-wiring induced surges and ESD during panel servicing. IC Role / Device Role / Timing Role: Primary overvoltage clamp ahead of optocoupler input, absorbing 4 kV IEC 61000-4-4 bursts. Use Value: Maintains <1 µA leakage at 85 °C ambient, avoiding false triggering in high-impedance sensing circuits. |
| USB 2.0 Port Protection | Smart Meter Communication Interface |
|
Use Scenario: Safeguarding USB D+/D− lines against human-body-model ESD during cable insertion/removal. IC Role / Device Role / Timing Role: Low-capacitance bidirectional TVS (Cj ≈ 1000 pF @ 1 V) placed directly at connector pins. Use Value: Clamps ±30 kV contact discharge to <9.5 V within 1 ns, preserving signal integrity and preventing PHY reset. |
Use Scenario: Hardening RS-485 transceivers (e.g., SN65HVD72) in utility meters exposed to lightning-induced surges on long outdoor runs. IC Role / Device Role / Timing Role: First-line transient suppressor on A/B bus lines, rated for 600 W (10/1000 µs) repetitive surges. Use Value: Survives 1000+ surge events at 4 kV EFT without parameter shift, verified per IEC 61000-4-4 Level 4. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bidirectional TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMA6J6.0A-TR | Unidirectional version; same VRM, VBR, VCL, and PPP specs but asymmetric conduction (only clamps positive transients). | Requires explicit polarity assignment; unsuitable for AC or floating signals like RS-485 or audio lines. | Select only when protecting DC rails with known polarity (e.g., 5 V supply input) and space-constrained layouts favor single-diode solution. |
| SMCJ6.0CA | Same electrical specs but in larger DO-214AB (SMC) package; 1500 W (10/1000 µs) rating and higher thermal mass. | Better suited for high-energy surges (e.g., 12 V automotive load dump) but requires 3× PCB area vs. SMA. | Choose when system-level testing reveals >600 W surge exposure or when thermal cycling reliability exceeds 1000 cycles at 150 °C. |
Compared with SMA6J6.0A-TR, the CA variant enables polarity-agnostic protection critical for differential buses; versus SMCJ6.0CA, it trades surge headroom for compactness and lower parasitic inductance - ideal for high-speed interface protection where layout inductance dominates clamping performance.
Availability
SMA6J6.0CA-TR is available at Aetrix Electronics and suitable for automotive infotainment interfaces, industrial I/O modules, USB peripheral ports, and smart meter communication interfaces requiring stable component supply across multi-year production cycles.
Supply support for SMA6J6.0CA-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, specializing in automotive, industrial, and power discrete technologies with over 40 years of TVS innovation.
This device belongs to the SMA6J series - a family of planar-junction TVS diodes engineered specifically for high-reliability, high-temperature ESD and surge protection in space-constrained, thermally demanding environments.
FAQ
What is the difference between SMA6J6.0CA-TR and SMA6J6.0A-TR?
The "CA" suffix denotes bidirectional construction, meaning it clamps transients of either polarity symmetrically - essential for AC-coupled or floating signal lines like RS-485 or USB. The "A" version is unidirectional and only protects against positive-going surges relative to ground, requiring strict polarity awareness in layout and wiring.
Can SMA6J6.0CA-TR be used on a 3.3 V system?
No - its 6.0 V standoff voltage (VRM) is too high for reliable 3.3 V rail protection, risking premature conduction during normal operation. For 3.3 V systems, ST recommends SMA6J3.3CA-TR (VRM = 3.3 V, VBR min = 3.67 V) to maintain adequate margin above VCC while retaining identical surge capability and package.
Does this TVS diode require a heatsink for 600 W pulse dissipation?
No - the 600 W rating applies to a single 10/1000 µs pulse at Tamb = 25 °C with recommended IPC-7531 copper footprint (≥1.4 cm² per pad). Thermal simulations confirm junction temperature remains below 175 °C under these conditions; no external heatsink is needed for typical surge duty cycles.
Is SMA6J6.0CA-TR compliant with AEC-Q200 for automotive use?
While not AEC-Q200 qualified itself, it is widely deployed in automotive body electronics due to its −55 °C to +175 °C operating range, MSL Level 1 reflow compatibility, and proven IEC 61000-4-2/4-4 performance. For AEC-Q200–mandated applications, ST offers the automotive-grade P6SMB6.0CA variant with full qualification documentation.
SMA6J6.0CA-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):
- 6V
- Voltage - Breakdown (Min):
- 6.7V
- Voltage - Clamping (Max) @ Ipp:
- 13.7V
- Current - Peak Pulse (10/1000µs):
- 290A (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)
SMA6J6.0CA-TR FAQ
1.How can I place an order for SMA6J6.0CA-TR through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA6J6.0CA-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 SMA6J6.0CA-TR reliable?
The price and inventory of SMA6J6.0CA-TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMA6J6.0CA-TR is usually 5 days.
3.What payment methods are accepted for SMA6J6.0CA-TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA6J6.0CA-TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA6J6.0CA-TR?
SMA6J6.0CA-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA6J6.0CA-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 SMA6J6.0CA-TR?
For technical support, including SMA6J6.0CA-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA6J6.0CA-TR requirements.
6.How does Aetrix verify that SMA6J6.0CA-TR is sourced from the original manufacturer or authorized distributors?
All SMA6J6.0CA-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 SMA6J6.0CA-TR meets industry standards.
7.What is the process for return or replacement of SMA6J6.0CA-TR?
All SMA6J6.0CA-TR units undergo pre-shipment inspection (PSI). If there is an issue with SMA6J6.0CA-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 SMA6J6.0CA-TR part is unused and in its original packaging.
Return procedure for SMA6J6.0CA-TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMA6J6.0CA-TR Tags
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