My Inquiry
My Account
STMicroelectronics SMA6J15CA-TR
- Part No.:
- SMA6J15CA-TR
- Manufacturer:
- STMicroelectronics
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMA6J15CA-TR.pdf
- Description:
- TVS DIODE 15VWM 27.7VC SMA
- Quantity:
- Payment:
- Shipping:
Inventory:8,022
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SMA6J15CA-TR from STMicroelectronics is a bidirectional 15 V standoff transient voltage suppression (TVS) diode in SMA package, rated for 600 W peak pulse power (10/1000 µs), 4 kW (8/20 µs), with clamping voltage of 23.6 V at 25.1 A and leakage current ≤0.2 µA at 25 °C - deployed to protect USB 2.0 data lines, industrial I/O ports, and automotive sensor interfaces against ESD and fast transients.
For engineers reviewing the SMA6J15CA-TR datasheet, SMA6J15CA-TR pinout, SMA6J15CA-TR application, or SMA6J15CA-TR equivalent, key selection criteria include bidirectional clamping symmetry, low dynamic resistance (0.206 Ω), high junction temperature rating (175 °C), and compliance with IEC 61000-4-2 level 4 (30 kV contact/air discharge) and IEC 61000-4-4 level 4 (4 kV).
Technical Context
This TVS diode uses planar silicon technology to achieve low leakage and stable breakdown behavior across -55 °C to +175 °C operating junction temperature. Its bidirectional structure provides symmetrical clamping for AC-coupled or floating signal paths without polarity dependency.
The device meets JEDEC DO-214AC (SMA) mechanical standard and IPC-7531 footprint requirements, with solderable matte tin leads qualified per JESD 22-B102 E3 and MIL-STD-750 method 2026. Thermal impedance is optimized for FR4 PCBs with recommended copper area under each lead.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Standoff Voltage (VRM) | 15 V - maximum continuous reverse working voltage before significant conduction begins |
| Breakdown Voltage (VBR) | 16.7–18.5 V at 1 mA - ensures reliable triggering above normal signal swing while avoiding false trips |
| Clamping Voltage (VCL) | 23.6 V at 25.1 A (10/1000 µs) - limits transient-induced stress on downstream ICs during surge events |
| Peak Pulse Power | 600 W (10/1000 µs), 4 kW (8/20 µs) - supports robust protection against lightning-induced surges and EFT bursts |
| Leakage Current | ≤0.2 µA at 25 °C, ≤1 µA at 85 °C - preserves signal integrity and battery life in low-power sensor nodes |
| Dynamic Resistance (RD) | 0.206 Ω - minimizes voltage overshoot during high-current transients by reducing IR drop across the device |
| Junction Temperature Range | -55 °C to +175 °C - enables deployment in under-hood automotive, industrial motor drives, and outdoor equipment |
Pinout & Package
The SMA6J15CA-TR is housed in a JEDEC DO-214AC (SMA) surface-mount package with two terminals: Cathode and Anode, arranged in a symmetrical bidirectional configuration. The package measures 4.80–5.35 mm × 3.95–4.60 mm × 2.25–2.90 mm (L × E × D), with 1.25–1.65 mm lead width and 0.75–1.50 mm lead length.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry point (negative polarity half-cycle) | Conducts during negative ESD events; forms symmetrical clamping path with Cathode |
| Cathode | Transient current entry point (positive polarity half-cycle) | Conducts during positive ESD events; enables bidirectional protection without external polarity management |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating differential signals (e.g., RS-485, CAN FD, USB D+/D−) |
| Low dynamic resistance | 0.206 Ω reduces clamping voltage overshoot under high di/dt transients, improving system-level immunity margin |
| High-temperature operation | Rated up to 175 °C junction temperature - suitable for engine control units, power inverters, and enclosed industrial enclosures |
| IEC 61000-4-2 level 4 compliance | Withstands 30 kV air and contact discharge - exceeds automotive and industrial ESD immunity requirements |
| UL94 V0 resin housing | Self-extinguishing encapsulation prevents flame propagation in safety-critical applications such as medical and transportation systems |
Applications
| Industrial PLC I/O Protection | Automotive Sensor Interface |
|---|---|
Use Scenario: Protecting 24 V DC analog input channels in programmable logic controllers against induced surges from relay switching and nearby motor drives. IC Role / Device Role / Timing Role: Bidirectional TVS diode placed directly at connector entry point to clamp transients before reaching precision ADC front-end. Use Value: Clamps 4 kV EFT bursts (IEC 61000-4-4) to ≤23.6 V, preventing latch-up or damage to 16-bit SAR ADCs and op-amp buffers. | Use Scenario: Safeguarding LIN bus and analog pressure/temperature sensor outputs in engine bay modules exposed to load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Standoff-rated TVS located between sensor output and microcontroller GPIO, providing fast response (<1 ns) to ESD and coupled noise. Use Value: Maintains ≤0.2 µA leakage at 85 °C ambient, preserving sensor offset accuracy and enabling long-term calibration stability. |
| USB 2.0 Data Line Protection | RS-485 Transceiver Interface |
Use Scenario: Shielding D+ and D− lines of embedded USB host ports from human-body-model ESD events during field maintenance or cable hot-plug. IC Role / Device Role / Timing Role: Bidirectional TVS placed adjacent to USB connector with minimal trace length to reduce inductance and preserve signal integrity. Use Value: Limits clamping voltage to 23.6 V while adding <10 pF capacitance at 0 V bias - avoids signal distortion in 480 Mbps full-speed operation. | Use Scenario: Protecting half-duplex RS-485 transceivers in building automation networks subject to lightning-induced ground potential differences. IC Role / Device Role / Timing Role: Symmetrical TVS pair (one per line) referenced to common-mode ground, absorbing differential and common-mode surges. Use Value: Delivers 600 W (10/1000 µs) surge handling with matched clamping on both polarities - prevents receiver saturation and false data decoding. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bidirectional TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ15CA-TR | Same electrical specs but in larger SMB (DO-214AA) package; 1.0 mm higher profile and 20% larger footprint | Better thermal dissipation for sustained surge duty cycles; less suitable for ultra-thin consumer PCBs | Select when board space allows and thermal margin is prioritized over miniaturization |
| 1.5KE15CA | Through-hole TO-218 package; same 15 V standoff but higher clamping (24.4 V) and lower peak current (38.8 A) | Designed for legacy industrial chassis-mount designs; not compatible with automated SMT assembly | Choose only for repair or retrofit of existing through-hole systems where rework is constrained |
Compared with SMBJ15CA-TR and 1.5KE15CA, SMA6J15CA-TR offers optimal balance of miniaturization, surge robustness, and SMT manufacturability - delivering identical protection performance in the smallest standardized surface-mount outline (DO-214AC) with verified reflow compatibility per J-STD-020 MSL level 1.
Availability
SMA6J15CA-TR is available at Aetrix Electronics and suitable for industrial PLC I/O protection, automotive sensor interface, and USB 2.0 data line protection requiring stable component supply across multi-year production programs.
Supply support for SMA6J15CA-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, designing and manufacturing microcontrollers, power devices, sensors, and protection components for automotive, industrial, and consumer markets.
The SMA6J series belongs to ST's transient protection portfolio, engineered specifically for high-reliability, high-temperature ESD and surge suppression in space-constrained SMT applications where low leakage and symmetrical clamping are mandatory.
FAQ
What is the difference between SMA6J15CA-TR and SMA6J15A-TR?
The "CA" suffix denotes bidirectional construction, meaning it clamps symmetrically for both positive and negative transients - ideal for AC-coupled or floating signal lines like USB D+/D− or RS-485. The "A" version is unidirectional and requires correct polarity orientation relative to ground, making it suitable only for DC-biased lines such as power rails or single-ended digital I/O.
Does SMA6J15CA-TR meet automotive qualification standards?
SMA6J15CA-TR is not AEC-Q200 qualified out-of-box, but its 175 °C junction rating, robust ESD performance (30 kV contact/air), and JEDEC-compliant reflow profile make it widely used in non-safety-critical automotive subsystems including body control modules, HVAC sensors, and infotainment I/O - pending customer-specific validation per ISO 16750-2.
Can SMA6J15CA-TR be used in parallel for higher surge handling?
No - paralleling TVS diodes introduces imbalance due to parameter spread (e.g., VBR tolerance ±5%), causing one device to absorb most energy and fail prematurely. For >600 W (10/1000 µs) requirements, select a higher-rated part like SMA6J24CA-TR or use staged protection with upstream current-limiting resistors and downstream TVS devices.
What is the recommended PCB layout for optimal ESD performance?
Place SMA6J15CA-TR within 2 mm of the protected connector, route traces directly to pins with minimum length and width ≥0.5 mm, connect cathode/anode to dedicated ground plane vias (≥2 per terminal), and avoid routing other signals near the TVS path - this minimizes parasitic inductance and ensures sub-nanosecond response to 30 kV ESD events.
SMA6J15CA-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):
- 15V
- Voltage - Breakdown (Min):
- 16.7V
- Voltage - Clamping (Max) @ Ipp:
- 27.7V
- Current - Peak Pulse (10/1000µs):
- 123A (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)
SMA6J15CA-TR FAQ
1.How can I place an order for SMA6J15CA-TR through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA6J15CA-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 SMA6J15CA-TR reliable?
The price and inventory of SMA6J15CA-TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMA6J15CA-TR is usually 5 days.
3.What payment methods are accepted for SMA6J15CA-TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA6J15CA-TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA6J15CA-TR?
SMA6J15CA-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA6J15CA-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 SMA6J15CA-TR?
For technical support, including SMA6J15CA-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA6J15CA-TR requirements.
6.How does Aetrix verify that SMA6J15CA-TR is sourced from the original manufacturer or authorized distributors?
All SMA6J15CA-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 SMA6J15CA-TR meets industry standards.
7.What is the process for return or replacement of SMA6J15CA-TR?
All SMA6J15CA-TR units undergo pre-shipment inspection (PSI). If there is an issue with SMA6J15CA-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 SMA6J15CA-TR part is unused and in its original packaging.
Return procedure for SMA6J15CA-TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMA6J15CA-TR Tags
-
ESD9B5.0ST5G
onsemi
-
DESD3V3E1BL-7B
Diodes Incorporated
-
ESD5Z3.3T1G
onsemi
-
D5V0H1B2LP-7B
Diodes Incorporated
-
D5V0P1B2LP-7B
Diodes Incorporated
-
DESD5V0U1BA-7
Diodes Incorporated
-
ESD5Z5.0T1G
onsemi
-
DESD5V0U1BB-7
Diodes Incorporated
-
D12V0L1B2LP-7B
Diodes Incorporated
-
PESD2V0Y1BSFYL
Nexperia USA Inc.
-
DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
-
D5V0L1B2WS-7
Diodes Incorporated
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
