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Taiwan Semiconductor Corporation SMAJ6.0CA
- Part No.:
- SMAJ6.0CA
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMAJ6.0CA.pdf
- Description:
- TVS DIODE 6VWM 10.3VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:5,571
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Product details
Overview
SMAJ6.0CA from Taiwan Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in DO-214AC (SMA) package, designed for robust overvoltage protection in DC power rails. It features a 6.0 V working stand-off voltage (VWM), 6.67–7.37 V breakdown voltage (VBR), 10.3 V maximum clamping voltage (VC) at 800 A peak impulse current, and 400 W peak pulse power rating with 10/1000 µs waveform.
For engineers reviewing the SMAJ6.0CA datasheet, SMAJ6.0CA pinout, SMAJ6.0CA application, or SMAJ6.0CA equivalent, key selection considerations include bidirectional clamping capability, sub-1 ps response time, <1 µA reverse leakage above 10 V, ISO 7637-2 Pulse 1/2a/2b/3a/3b compliance, and suitability for automotive-grade DC/DC converters and SMPS input stages.
Technical Context
The SMAJ6.0CA is a glass-passivated, single-die, bidirectional TVS diode optimized for fast transient suppression on low-voltage DC lines. Its junction structure enables clamping within <1.0 ps from 0 V to VBR min, with guaranteed breakdown symmetry in both directions due to CA suffix designation.
It operates across –55 °C to +150 °C junction temperature range, supports 40 A non-repetitive forward surge (IFSM), and maintains <1 µA IR at VWM - critical for low-power standby circuits. The device meets JESD201 Class 2 whisker resistance and UL 94V-0 flammability requirements per its DO-214AC molding compound.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 6.0 V - Maximum continuous reverse operating voltage before clamping initiates |
| VBR min/max | 6.67 V / 7.37 V @ 10 mA - Confirmed symmetric breakdown threshold in both directions |
| VC @ IPPM | 10.3 V @ 800 A - Clamped voltage during 10/1000 µs surge, limiting downstream stress |
| PPPM | 400 W - Peak pulse power handling per 10/1000 µs waveform, derated above 25 °C |
| IR @ VWM | <1 µA - Minimal leakage at rated stand-off, preserving battery life in always-on systems |
| Package | DO-214AC (SMA) - Surface-mount outline with cathode band marking, JEDEC-compliant footprint |
| TJ max | +150 °C - Enables use in under-hood automotive or high-ambient industrial environments |
Pinout & Package
DO-214AC (SMA) package: molded plastic case with matte tin-plated leads, polarity indicated by cathode band. Weight ≈ 0.060 g. Complies with J-STD-002 solderability and JESD201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (unmarked end) | Transient return path (bidirectional) | Connects to protected line; conducts during negative transients |
| Cathode (banded end) | Transient return path (bidirectional) | Connects to protected line; conducts during positive transients |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Identical VBR and VC performance in both polarities - eliminates need for dual-device placement in AC-coupled or floating-rail protection |
| Sub-1 ps response | Clamps ESD and fast-edge transients before sensitive ICs experience overstress - critical for USB, CAN, and sensor interfaces |
| ISO 7637-2 compliance | Validated against automotive load dump (Pulse 2b), supply interruption (Pulse 3a/3b), and coupled noise (Pulse 1/2a) - suitable for OEM vehicle ECUs |
| Moisture sensitivity level 1 | No floor-life limitation or bake requirement before reflow - simplifies SMT line integration and reduces handling overhead |
| Halogen-free & RoHS | Meets IEC 61249-2-21 and EU RoHS directives - supports green manufacturing and export compliance without derating |
Applications
| Automotive Body Control Module (BCM) | Industrial PLC Digital Input Stage |
|---|---|
Use Scenario: Protecting 5–12 V microcontroller I/O and CAN transceiver power rails from load dump and inductive switching spikes in vehicle door modules. IC Role / Device Role / Timing Role: Bidirectional clamping element placed directly at connector entry point to shunt transients before they reach LDOs or signal conditioners. Use Value: Limits voltage excursion to ≤10.3 V during 800 A ISO 7637-2 Pulse 2b events, preventing latch-up or permanent damage to 3.3 V/5 V logic. | Use Scenario: Safeguarding 24 V digital input channels in programmable logic controllers exposed to field-wiring inductive kickback and lightning-induced surges. IC Role / Device Role / Timing Role: Primary overvoltage clamp on the front-end rectifier output, coordinated with upstream fuse and series impedance. Use Value: Withstands 400 W peak pulses while maintaining <1 µA leakage - avoids false triggering and preserves input threshold accuracy during normal operation. |
| LED Driver Secondary-Side Output | USB-C Power Delivery Adapter |
Use Scenario: Suppressing flyback transformer ringing and MOSFET turn-off spikes on constant-current LED string outputs in streetlight drivers. IC Role / Device Role / Timing Role: Parallel-connected TVS across output terminals to clamp repetitive 100 ns–1 µs oscillations without thermal runaway. Use Value: 150 °C TJ max and 1 W steady-state dissipation allow continuous operation in sealed, thermally constrained enclosures. | Use Scenario: Protecting secondary-side synchronous rectifier controllers and voltage monitors in compact USB-C PD adapters subjected to ESD and conducted noise. IC Role / Device Role / Timing Role: Low-capacitance (<100 pF typical), fast-response clamp on 5–20 V output rails adjacent to controller ICs. Use Value: Sub-1 ps response ensures clamping occurs before 3.3 V/5 V monitoring circuitry registers overvoltage - enabling reliable fault detection and shutdown. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ6.0A | Unidirectional; same VWM/VBR/VC specs but only clamps positive transients | Requires external polarity management; unsuitable for AC-coupled or floating-bus protection | Select SMAJ6.0A only when protecting unidirectional DC rails with known polarity and no reverse surge risk |
| P6SMB6.0CA | Same DO-214AA package; 600 W PPPM rating; slightly higher VC (10.5 V) and lower IR limit (5 µA @ VWM) | Higher power margin but larger footprint; not drop-in due to different package outline and thermal profile | Choose P6SMB6.0CA when system-level surge testing exceeds 400 W or board layout allows DO-214AA spacing |
Compared with SMAJ6.0A and P6SMB6.0CA, the SMAJ6.0CA uniquely delivers bidirectional 400 W clamping in the compact DO-214AC footprint with industry-leading <1 µA leakage - making it optimal for space-constrained, polarity-agnostic protection in automotive and industrial DC/DC systems.
Availability
SMAJ6.0CA is available at Aetrix Electronics and suitable for automotive body electronics, industrial PLC input protection, LED driver output stabilization, and USB-C adapter secondary-side surge suppression requiring stable component supply and full ISO 7637-2 qualification.
Supply support for SMAJ6.0CA 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
Taiwan Semiconductor Corporation (TSC) is a vertically integrated analog and discrete semiconductor manufacturer headquartered in Hsinchu, Taiwan, specializing in TVS diodes, rectifiers, MOSFETs, and power management devices.
The SMAJ series was engineered specifically for high-reliability, surface-mount transient suppression in automotive and industrial environments - emphasizing fast response, bidirectional symmetry, and robust JEDEC-compliant packaging.
FAQ
What does the "CA" suffix indicate in SMAJ6.0CA?
The "CA" suffix in SMAJ6.0CA denotes a bidirectional configuration - meaning the device provides symmetrical transient voltage clamping in both positive and negative polarities. Unlike unidirectional variants (e.g., SMAJ6.0A), SMAJ6.0CA has identical electrical characteristics in either direction, confirmed by TSC's specification table and intended for use on floating or AC-coupled lines where polarity reversal may occur.
Is SMAJ6.0CA compliant with automotive transient standards?
Yes, SMAJ6.0CA meets ISO 7637-2 requirements for Pulses 1, 2a, 2b, 3a, and 3b - validated per TSC's official datasheet (Version U2102). This includes load dump (Pulse 2b), supply interruption (Pulse 3a/3b), and coupled noise (Pulse 1/2a), confirming its suitability for automotive body control modules, infotainment power supplies, and gateway ECUs.
What is the maximum clamping voltage of SMAJ6.0CA under surge conditions?
The maximum clamping voltage (VC) of SMAJ6.0CA is 10.3 V when subjected to an 800 A peak impulse current with a 10/1000 µs waveform - as specified in TSC's Electrical Specifications table. This value represents the upper limit of voltage seen by downstream circuitry during worst-case transient events, ensuring compatibility with 12 V nominal systems and 3.3 V/5 V logic interfaces.
Can SMAJ6.0CA be used in place of SMAJ6.0A?
No - SMAJ6.0CA and SMAJ6.0A are not interchangeable without circuit review. SMAJ6.0CA is bidirectional; SMAJ6.0A is unidirectional and only clamps positive transients. Replacing SMAJ6.0A with SMAJ6.0CA introduces unnecessary conduction during reverse bias and may compromise protection integrity in polarity-sensitive designs such as DC input rails with defined ground reference.
What is the thermal derating behavior of SMAJ6.0CA above 25°C ambient?
SMAJ6.0CA's peak pulse power (PPPM) is derated linearly above TA = 25°C, per Figure 2 in TSC's datasheet. At 85°C ambient, its 400 W rating reduces to approximately 260 W; at 125°C, it falls to ~140 W. This derating must be applied during thermal design of high-temperature applications like under-hood automotive modules or enclosed LED drivers.
SMAJ6.0CA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Package/Case:
- DO-214AC, SMA
- Series:
- SMAJ
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 6V
- Voltage - Breakdown (Min):
- 6.67V
- Voltage - Clamping (Max) @ Ipp:
- 10.3V
- Current - Peak Pulse (10/1000µs):
- 38.8A
- 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 FAQ
1.How can I place an order for SMAJ6.0CA through Aetrix?
Please submit a Request for Quotation (RFQ) for SMAJ6.0CA 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 reliable?
The price and inventory of SMAJ6.0CA 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 is usually 5 days.
3.What payment methods are accepted for SMAJ6.0CA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMAJ6.0CA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMAJ6.0CA?
SMAJ6.0CA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMAJ6.0CA 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?
For technical support, including SMAJ6.0CA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMAJ6.0CA requirements.
6.How does Aetrix verify that SMAJ6.0CA is sourced from the original manufacturer or authorized distributors?
All SMAJ6.0CA 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 meets industry standards.
7.What is the process for return or replacement of SMAJ6.0CA?
All SMAJ6.0CA units undergo pre-shipment inspection (PSI). If there is an issue with SMAJ6.0CA, 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 part is unused and in its original packaging.
Return procedure for SMAJ6.0CA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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