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STMicroelectronics SMA6J26CA-TR
- Part No.:
- SMA6J26CA-TR
- Manufacturer:
- STMicroelectronics
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMA6J26CA-TR.pdf
- Description:
- TVS DIODE 26VWM 47.9VC SMA
- Quantity:
- Payment:
- Shipping:
Inventory:8,932
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Product details
Overview
SMA6J26CA-TR from STMicroelectronics is a bidirectional 600 W transient voltage suppression (TVS) diode designed for ESD and surge protection in DC power rails and signal lines. It features a standoff voltage (VRM) of 26 V, clamping voltage (VCL) of 40.9 V at 14.9 A (10/1000 µs), low leakage current (0.2 µA at 25 °C), and operates up to 175 °C junction temperature - deployed in industrial power supplies and automotive infotainment interfaces.
For engineers reviewing the SMA6J26CA-TR datasheet, SMA6J26CA-TR pinout, SMA6J26CA-TR application, or SMA6J26CA-TR equivalent, key selection criteria include bidirectional clamping behavior, IEC 61000-4-2 ±30 kV contact/air discharge compliance, 8/20 µs surge capability (53.5 A), thermal robustness to 175 °C, and SMA package compatibility with IPC7531 footprints.
Technical Context
This TVS diode uses planar silicon technology to achieve stable breakdown characteristics and low leakage across temperature. Its bidirectional configuration enables symmetrical clamping on AC-coupled or floating lines without polarity constraints.
The device meets IEC 61000-4-4 Level 4 (4 kV) and exceeds IEC 61000-4-2 Level 4 for both contact and air discharge (±30 kV). Dynamic resistance (RD) is 0.600 Ω at 25 °C, ensuring predictable voltage rise under fast transients.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Standoff Voltage (VRM) | 26 V - Maximum continuous reverse working voltage before conduction begins |
| Breakdown Voltage (VBR) | 28.9–31.9 V at 1 mA - Confirmed min/typ/max range ensures reliable triggering margin |
| Clamping Voltage (VCL) | 40.9 V at 14.9 A (10/1000 µs) - Limits downstream voltage during surge events |
| Peak Pulse Power | 600 W (10/1000 µs) - Sustains standard lightning-surge energy per IEC 61000-4-5 |
| Leakage Current (IRM) | 0.2 µA at 25 °C - Minimizes standby power loss in battery-backed circuits |
| Junction Temperature Range | −55 °C to +175 °C - Supports operation in under-hood automotive and industrial environments |
| ESD Rating | ±30 kV (IEC 61000-4-2, contact & air) - Exceeds Level 4 for robust system-level ESD immunity |
Pinout & Package
The SMA6J26CA-TR is housed in a JEDEC DO-214AC (SMA) surface-mount package with two terminals: Cathode (K) and Anode (A), arranged in a bidirectional configuration where both terminals function symmetrically as clamping nodes.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (A) | Transient return path (bidirectional) | Acts as clamping node during positive or negative overvoltage events |
| Cathode (K) | Transient return path (bidirectional) | Acts as clamping node during positive or negative overvoltage events |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection on AC or floating lines without polarity concerns |
| Low dynamic resistance (0.600 Ω) | Reduces voltage overshoot during fast 8/20 µs surges, improving protection margin |
| High-temperature operation (175 °C Tj max) | Supports placement near heat sources in power converters and motor drives |
| UL94 V0 resin housing | Meets flammability requirements for safety-critical industrial and automotive assemblies |
| MSL Level 1 rating | Allows unlimited floor life and reflow without dry-pack or baking preconditioning |
Applications
| Industrial Power Input Protection | Automotive Infotainment Interfaces |
|---|---|
Use Scenario: 24 V DC input rail in programmable logic controllers exposed to load dump and inductive switching transients. IC Role / Device Role / Timing Role: Transient voltage suppressor placed at board edge to clamp surges before reaching DC-DC converters and microcontrollers. Use Value: Clamps 10/1000 µs surges to ≤40.9 V while dissipating 600 W, preventing damage to 3.3 V/5 V logic downstream. | Use Scenario: USB 2.0 and CAN FD data lines in head units subject to ESD during connector insertion. IC Role / Device Role / Timing Role: Bidirectional TVS on differential pairs to absorb ±30 kV contact discharge without polarity biasing. Use Value: Low capacitance (<100 pF at 1 V) avoids signal integrity degradation while meeting ISO 10605 ESD targets. |
| Telecom PoE Interface | Medical Sensor Signal Conditioning |
Use Scenario: 48 V Power over Ethernet (PoE) injector output stage subjected to cable-induced surges. IC Role / Device Role / Timing Role: Primary surge clamp on PSE output, coordinated with secondary TVS and current limiting. Use Value: Withstands 4 kV IEC 61000-4-4 bursts and maintains <1 µA leakage at 85 °C for long-term reliability. | Use Scenario: Analog front-end inputs of patient-monitoring ECG amplifiers connected to external electrodes. IC Role / Device Role / Timing Role: Low-leakage (0.2 µA) bidirectional TVS protecting high-impedance instrumentation amplifiers from ESD. Use Value: Prevents amplifier saturation or latch-up during handling while adding <0.5 mV offset error due to leakage. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bidirectional TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMA6J26CA from Vishay (SMAJ26CA) | Same VRM (26 V), slightly higher VCL (42.1 V @ 14.5 A), MSL Level 1, identical DO-214AC package | Marginally lower surge current rating (14.5 A vs. 14.9 A); otherwise drop-in compatible | Select when dual-sourcing is required and minor clamping voltage increase is acceptable |
| 1.5SMC27CA from ON Semiconductor | Higher VRM (27 V), same bidirectional topology, but larger SMC (DO-214AB) package and 1.5 kW peak power rating | Requires PCB footprint redesign; suited for higher-energy surge environments beyond 600 W | Choose only if system-level testing confirms need for >600 W pulse handling and layout allows SMC pad changes |
Compared with SMA6J26CA-TR, the Vishay SMAJ26CA offers nearly identical electrical performance and packaging for seamless second-source qualification, while the ON Semiconductor 1.5SMC27CA trades footprint compatibility for higher surge capacity - making it suitable only when design margins require >600 W dissipation and board space permits larger SMC pads.
Availability
SMA6J26CA-TR is available at Aetrix Electronics and suitable for industrial power input protection, automotive infotainment interfaces, and telecom PoE interface designs requiring stable component supply, long-lifecycle support, and traceable sourcing.
Supply support for SMA6J26CA-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 intelligent power, sensing, and control solutions for automotive, industrial, and consumer markets.
The SMA6J series belongs to ST's transient protection portfolio, engineered specifically for high-reliability ESD and surge suppression in space-constrained, thermally demanding applications - emphasizing low leakage, high Tj, and IEC-compliant robustness.
FAQ
What is the maximum clamping voltage of SMA6J26CA-TR under a 10/1000 µs surge?
The maximum clamping voltage (VCL) is 40.9 V at 14.9 A for a 10/1000 µs waveform, measured at 25 °C. This value increases with junction temperature per the αT coefficient (10⁻⁴/°C), reaching approximately 42.1 V at 125 °C ambient under full surge conditions.
Is SMA6J26CA-TR unidirectional or bidirectional, and how does that affect circuit placement?
SMA6J26CA-TR is a bidirectional TVS diode, meaning it clamps both positive- and negative-polarity transients symmetrically between its two terminals. This eliminates polarity sensitivity, allowing direct placement across AC-coupled lines, differential buses (e.g., CAN, RS-485), or floating sensor inputs without orientation constraints.
Does SMA6J26CA-TR meet automotive-grade reliability standards?
While not AEC-Q200 qualified, SMA6J26CA-TR supports automotive applications via its 175 °C maximum junction temperature, ±30 kV IEC 61000-4-2 ESD rating, and compliance with JESD22-B102 solderability and JESD201 whisker resistance Class 2 - commonly used in infotainment, body control, and ADAS auxiliary circuits where full qualification is not mandated.
Can SMA6J26CA-TR be used in parallel for higher surge current handling?
Parallel use is not recommended due to mismatch in dynamic resistance (RD = 0.600 Ω) and VBR tolerances (±5%), which causes uneven current sharing and potential thermal runaway. For higher current needs, select a single higher-rated device like SMA6J33CA or verify matched pairing with derated surge current per manufacturer guidance.
SMA6J26CA-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):
- 26V
- Voltage - Breakdown (Min):
- 28.9V
- Voltage - Clamping (Max) @ Ipp:
- 47.9V
- Current - Peak Pulse (10/1000µs):
- 75A (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)
SMA6J26CA-TR FAQ
1.How can I place an order for SMA6J26CA-TR through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA6J26CA-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 SMA6J26CA-TR reliable?
The price and inventory of SMA6J26CA-TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMA6J26CA-TR is usually 5 days.
3.What payment methods are accepted for SMA6J26CA-TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA6J26CA-TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA6J26CA-TR?
SMA6J26CA-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA6J26CA-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 SMA6J26CA-TR?
For technical support, including SMA6J26CA-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA6J26CA-TR requirements.
6.How does Aetrix verify that SMA6J26CA-TR is sourced from the original manufacturer or authorized distributors?
All SMA6J26CA-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 SMA6J26CA-TR meets industry standards.
7.What is the process for return or replacement of SMA6J26CA-TR?
All SMA6J26CA-TR units undergo pre-shipment inspection (PSI). If there is an issue with SMA6J26CA-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 SMA6J26CA-TR part is unused and in its original packaging.
Return procedure for SMA6J26CA-TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMA6J26CA-TR Tags
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Toshiba Semiconductor and Storage
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