My Inquiry
My Account
STMicroelectronics SMAJ6.0CA-TR
- Part No.:
- SMAJ6.0CA-TR
- Manufacturer:
- STMicroelectronics
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMAJ6.0CA-TR.pdf
- Description:
- TVS DIODE 6VWM 13.7VC SMA
- Quantity:
- Payment:
- Shipping:
Inventory:16,752
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SMAJ6.0CA-TR from STMicroelectronics is a bidirectional transient voltage suppression (TVS) diode designed for ESD and surge protection in low-voltage DC power rails and signal lines. It features a 6.0 V stand-off voltage (VRM), 10.3 V clamping voltage at 38.8 A (10/1000 µs), 400 W peak pulse power, and operates up to 150 °C junction temperature - deployed in industrial I/O interfaces, USB ports, and automotive body electronics.
For engineers reviewing the SMAJ6.0CA-TR datasheet, SMAJ6.0CA-TR pinout, SMAJ6.0CA-TR application, or SMAJ6.0CA-TR equivalent, key selection criteria include bidirectional clamping behavior, low leakage (<1 µA at 85 °C), JEDEC DO-214AC (SMA) package compatibility, and IEC 61000-4-2 Level 4 (±30 kV contact/air) compliance.
Technical Context
This TVS diode uses planar silicon junction technology to achieve stable breakdown characteristics and low dynamic resistance (0.075 Ω at 25 °C). Its bidirectional structure enables symmetrical clamping for AC-coupled or floating signal paths without polarity constraints.
The device meets IEC 61000-4-4 Level 4 (4 kV) surge immunity and exceeds IEC 61000-4-2 Level 4 ESD performance with ±30 kV air/contact discharge capability. Thermal design is supported by a maximum junction temperature of 150 °C and validated reflow profile per J-STD-020 MSL Level 1.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Stand-off Voltage (VRM) | 6.0 V - Maximum continuous reverse operating voltage before significant leakage or conduction begins. |
| Breakdown Voltage (VBR) | 6.70–7.05 V at 10 mA - Ensures reliable triggering during overvoltage transients while avoiding false trips under normal operation. |
| Clamping Voltage (VCL) | 10.3 V at 38.8 A (10/1000 µs) - Limits downstream circuit voltage to safe levels during 400 W surges. |
| Peak Pulse Power (PPP) | 400 W (10/1000 µs) - Sustains standardized lightning-surge energy without failure in industrial power supply inputs. |
| Leakage Current (IRM) | ≤20 µA at 6.0 V, 25 °C - Minimizes standby power loss in battery-backed or low-power sensor nodes. |
| Junction Temperature Range | −55 °C to +150 °C - Supports deployment in under-hood automotive or high-ambient industrial enclosures. |
Pinout & Package
Package: DO-214AC (SMA), surface-mount, JEDEC-registered outline with matte tin-plated leads compliant with JESD-22-B102 E3 and IPC-7531 footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (K) | Common terminal for bidirectional clamping | Internally connected to both P-N junctions; forms symmetrical voltage clamp across terminals. |
| Anode (A) | Common terminal for bidirectional clamping | Paired with cathode to enable identical clamping in either polarity - no directional mounting requirement. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional ESD protection | Enables single-device protection of AC signals or floating buses without polarity awareness - reduces BOM count in USB 2.0 or RS-485 interfaces. |
| Low dynamic resistance | 0.075 Ω at 25 °C - Minimizes voltage overshoot during fast transients, improving protection margin for 3.3 V logic ICs. |
| High-temperature reliability | Rated for 150 °C junction operation - maintains clamping performance in thermally constrained PCB layouts near power converters. |
| IEC 61000-4-2 Level 4 compliance | Withstands ±30 kV contact and air discharge - satisfies end-equipment certification for industrial HMI and medical front panels. |
Applications
| Industrial Sensor Interface | Automotive Body Control Module |
|---|---|
Use Scenario: Protecting analog sensor outputs (e.g., pressure, temperature) from ESD events during factory handling or field maintenance. IC Role / Device Role / Timing Role: Bidirectional TVS placed at connector entry point to shunt transients before reaching precision ADC input stages. Use Value: Prevents latch-up or parametric shift in 16-bit SAR ADCs by limiting induced voltage to ≤10.3 V during ±8 kV contact discharge. | Use Scenario: Safeguarding LIN bus transceivers and microcontroller GPIOs against load-dump-induced surges and ESD in door modules. IC Role / Device Role / Timing Role: Standoff-clamped TVS on LIN data line and VBAT-supply rail to absorb 400 W pulses without degrading signal integrity. Use Value: Maintains <1 µs response time and preserves LIN timing margins (bit rate 19.2 kbps) while surviving ISO 16750-2 pulse 5a. |
| USB 2.0 Port Protection | DC Power Input Protection |
Use Scenario: Guarding D+ and D− lines of embedded USB host ports against user-induced ESD in portable test equipment. IC Role / Device Role / Timing Role: Low-capacitance bidirectional TVS placed directly at USB connector to minimize stub length and preserve signal rise/fall times. Use Value: Limits capacitance to <100 pF at 0 V (per datasheet curve Fig. 8), preserving USB 2.0 eye diagram integrity up to 480 Mbps. | Use Scenario: Clamping 12 V DC input rails in programmable logic controllers exposed to inductive switching noise and accidental reverse-polarity connection. IC Role / Device Role / Timing Role: Primary surge suppressor upstream of DC-DC converter input, sized for 400 W (10/1000 µs) transients per IEC 61000-4-4. Use Value: Absorbs >99% of surge energy before it reaches downstream regulators, preventing brownout resets during relay coil de-energization. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bidirectional TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ6.0CA | Higher PPP (600 W), larger SMB (DO-214AA) package, 11.2 V clamping at 53.5 A (10/1000 µs) | Better suited for higher-energy surges; requires more PCB area and has higher thermal mass | Select when system-level testing shows >400 W surge exposure or when board layout allows larger footprint. |
| 1.5KE6.8CA | Through-hole DO-15 package, 600 W rating, 11.0 V clamping at 54.5 A (10/1000 µs), higher leakage (5 µA @ 6.8 V) | Not suitable for automated SMT assembly; used in legacy or high-reliability through-hole designs | Choose only for manual assembly or where DO-15 mechanical robustness is required over SMT density. |
Compared with SMBJ6.0CA and 1.5KE6.8CA, SMAJ6.0CA-TR offers optimal balance of compact DO-214AC footprint, certified 400 W surge handling, and ultra-low leakage - making it ideal for space-constrained, high-density industrial PCBs requiring automated assembly and long-term stability.
Availability
SMAJ6.0CA-TR is available at Aetrix Electronics and suitable for industrial sensor interfaces, automotive body control modules, USB 2.0 port protection, and DC power input protection requiring stable component supply across extended production cycles.
Supply support for SMAJ6.0CA-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, designing and manufacturing microcontrollers, power devices, sensors, and protection components for industrial, automotive, and consumer markets.
The SMAJ series belongs to ST's transient protection portfolio, engineered specifically for high-reliability, low-leakage ESD and surge suppression in space- and thermally-constrained SMT applications.
FAQ
What is the difference between SMAJ6.0A-TR and SMAJ6.0CA-TR?
SMAJ6.0A-TR is unidirectional (anode-to-cathode only conduction), while SMAJ6.0CA-TR is bidirectional - providing symmetrical clamping for AC signals or floating lines. The "CA" suffix denotes bidirectional configuration, critical for protecting differential buses like RS-485 or USB without polarity concerns.
Does SMAJ6.0CA-TR meet automotive qualification standards?
SMAJ6.0CA-TR is not AEC-Q200 qualified, but its 150 °C junction rating, IEC 61000-4-2/4-4 compliance, and robust JEDEC DO-214AC construction make it widely used in non-safety-critical automotive body electronics - including door modules and lighting control units - pending customer-specific validation.
Can SMAJ6.0CA-TR be used in parallel for higher surge current handling?
No - paralleling TVS diodes is not recommended due to mismatched dynamic resistance and uneven current sharing, which risks thermal runaway. For higher surge ratings, select a single higher-PPP device such as SMBJ6.0CA or 5.0SMDJ6.0CA instead.
What is the typical junction capacitance of SMAJ6.0CA-TR at 0 V?
Per Figure 8 in DS1251 Rev 15, the junction capacitance of SMAJ6.0CA-TR is approximately 1,200 pF at 0 V reverse bias and 1 MHz frequency. This value decreases with increasing reverse voltage and must be considered when protecting high-speed data lines like USB 2.0.
SMAJ6.0CA-TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- DO-214AC, SMA
- Series:
- SMAJ, 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):
- 170A (8/20µs)
- Power - Peak Pulse:
- 400W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
SMAJ6.0CA-TR FAQ
1.How can I place an order for SMAJ6.0CA-TR through Aetrix?
Please submit a Request for Quotation (RFQ) for SMAJ6.0CA-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 SMAJ6.0CA-TR reliable?
The price and inventory of SMAJ6.0CA-TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMAJ6.0CA-TR is usually 5 days.
3.What payment methods are accepted for SMAJ6.0CA-TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMAJ6.0CA-TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMAJ6.0CA-TR?
SMAJ6.0CA-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMAJ6.0CA-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 SMAJ6.0CA-TR?
For technical support, including SMAJ6.0CA-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMAJ6.0CA-TR requirements.
6.How does Aetrix verify that SMAJ6.0CA-TR is sourced from the original manufacturer or authorized distributors?
All SMAJ6.0CA-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 SMAJ6.0CA-TR meets industry standards.
7.What is the process for return or replacement of SMAJ6.0CA-TR?
All SMAJ6.0CA-TR units undergo pre-shipment inspection (PSI). If there is an issue with SMAJ6.0CA-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 SMAJ6.0CA-TR part is unused and in its original packaging.
Return procedure for SMAJ6.0CA-TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMAJ6.0CA-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…
