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Taiwan Semiconductor Corporation SMAJ6.0CH
- Part No.:
- SMAJ6.0CH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMAJ6.0CH.pdf
- Description:
- 400W, 7.4V, BIDIRECTIONAL, TVS
- Quantity:
- Payment:
- Shipping:
Inventory:6,714
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Product details
Overview
SMAJ6.0CH from Taiwan Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in DO-214AC (SMA) package, designed for clamping fast transients in DC power rails. It features a 6.67 V minimum breakdown voltage (VBR), 10 V working stand-off voltage (VWM), 11.4 V maximum clamping voltage (VC) at 800 A peak pulse current, and 400 W peak pulse power rating with 10/1000 µs waveform - suitable for automotive-grade SMPS input protection.
For engineers reviewing the SMAJ6.0CH datasheet, SMAJ6.0CH pinout, SMAJ6.0CH application, or SMAJ6.0CH equivalent, key selection criteria include its AEC-Q101 qualification, sub-1 ps response time, <1 µA reverse leakage at 10 V, ISO 7637-2 Pulse 1/2a/2b/3a/3b compliance, and unidirectional polarity marking for reliable board-level surge immunity design.
Technical Context
The SMAJ6.0CH operates as a unidirectional avalanche diode, leveraging glass-passivated junction technology to achieve stable breakdown behavior and low capacitance. Its clamping action begins at VBR ≥ 6.67 V (tested at 10 mA), with guaranteed VC ≤ 11.4 V under 800 A 10/1000 µs surge - enabling robust overvoltage protection without compromising downstream IC survival.
Thermally rated for TJ = –55 °C to +150 °C and packaged in moisture-sensitive level 1 DO-214AC (SMA), it supports automated SMT placement and meets JESD201 Class 2 whisker resistance and UL 94V-0 flammability requirements - critical for under-hood automotive and industrial DC/DC converter applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 10 V - Maximum continuous reverse operating voltage before leakage exceeds 6 µA; defines safe DC rail margin. |
| VBR (min/max) | 6.67 V / 8.15 V @ 10 mA - Ensures predictable turn-on across temperature and process variation. |
| VC @ IPPM | 11.4 V @ 800 A - Limits worst-case voltage seen by protected circuit during 10/1000 µs surge. |
| PPPM | 400 W - Peak pulse power handling per single non-repetitive 10/1000 µs event at 25 °C. |
| IR @ VWM | ≤6 µA - Low leakage preserves efficiency in battery-backed or low-power standby circuits. |
| Response Time | <1.0 ps - Enables suppression of ESD and fast-switching noise before sensitive logic is disturbed. |
| TJ Range | –55 °C to +150 °C - Supports operation in engine control units, lighting drivers, and industrial power supplies. |
Pinout & Package
DO-214AC (SMA) surface-mount package with cathode band marking on one end; matte tin-plated leads compliant with J-STD-002 solderability and JESD201 Class 2 whisker resistance. Weight: 0.060 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference terminal | Connected to ground or low-impedance return path; forms clamping loop with cathode. |
| Cathode (marked band) | High-side transient sink | Connected to protected line (e.g., 12 V rail); conducts surge current to ground when VAK > VBR. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive electronics per stress test requirements - enables use in ADAS, body control, and infotainment systems. |
| Glass-passivated junction | Enhances long-term reliability and stability of VBR under thermal cycling and humidity exposure. |
| ISO 7637-2 compliance | Withstands Pulse 1 (inductive load dump), Pulse 2a/2b (switching transients), and Pulse 3a/3b (line impedance stabilization network events). |
| Moisture sensitivity level 1 | Zero bake requirement prior to reflow - simplifies manufacturing and reduces assembly cost. |
| Halogen-free & RoHS compliant | Meets IEC 61249-2-21 and EU RoHS Directive - supports green product certification and export compliance. |
Applications
| Automotive Power Input Protection | Industrial DC/DC Converter Input |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs against load dump and alternator transients per ISO 7637-2. IC Role / Device Role / Timing Role: Unidirectional TVS diode placed between battery rail and DC/DC input filter capacitor. Use Value: Clamps surges to ≤11.4 V while absorbing 400 W peak power - prevents damage to upstream PMICs and microcontrollers. |
Use Scenario: Safeguarding isolated DC/DC converter primary-side inputs in factory automation controllers. IC Role / Device Role / Timing Role: Standoff-rated transient clamp on 24 V input bus subjected to relay switching noise. Use Value: Sub-1 ps response ensures suppression occurs before 50 ns rise-time transients propagate into isolation barrier. |
| LED Driver Power Stage | USB-C PD Adapter Input |
Use Scenario: Overvoltage protection for constant-current LED driver ICs powered from 48 V industrial supply. IC Role / Device Role / Timing Role: Primary-side TVS on high-side switch node to limit gate-source voltage excursions. Use Value: 10 V VWM provides 2× margin over 48 V nominal rail's ripple envelope - avoids false triggering during normal operation. |
Use Scenario: Input-stage surge protection in compact USB-C power delivery adapters supporting 100 W output. IC Role / Device Role / Timing Role: First-line defense on AC-DC secondary side before buck controller and synchronous rectifier. Use Value: DO-214AC footprint enables high-density layout; 0.060 g mass minimizes mechanical stress on PCB during thermal cycling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ6.0AHE3/5AT | Lower VBR max (7.37 V vs. 8.15 V); tighter VBR tolerance; same VC (10.3 V) and PPPM (400 W). | Better suited for designs requiring tighter clamping threshold consistency across temperature and lot variance. | Select SMAJ6.0AHE3/5AT when VBR distribution control is prioritized over absolute maximum surge margin. |
| SMBJ6.0AH | Same VBR/VC specs but in larger DO-214AA (SMB) package; higher IFSM (100 A vs. 40 A); identical AEC-Q101 and ISO 7637-2 compliance. | Preferred where higher surge repetition capability or thermal mass is needed, e.g., in high-duty-cycle motor drives. | Choose SMBJ6.0AH only if PCB layout allows larger footprint and thermal derating above 25 °C is critical. |
Compared with SMAJ6.0CH, SMAJ6.0AHE3/5AT offers tighter VBR control for precision clamping, while SMBJ6.0AH trades compactness for enhanced thermal endurance - neither is pin-compatible due to differing package outlines and thermal pad requirements.
Availability
SMAJ6.0CH is available at Aetrix Electronics and suitable for automotive power input protection, industrial DC/DC converter input stages, and LED driver power stage applications requiring stable component supply, AEC-Q101 validation, and ISO 7637-2 compliance.
Supply support for SMAJ6.0CH 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 developed specifically for AEC-Q101-compliant transient suppression in automotive and industrial power systems - emphasizing fast response, low leakage, and robust package reliability under harsh thermal and mechanical conditions.
FAQ
What is the polarity configuration of the SMAJ6.0CH?
The SMAJ6.0CH is a unidirectional TVS diode with cathode indicated by a band on the DO-214AC (SMA) package. It conducts only when the cathode is at a higher potential than the anode - making it suitable for protecting positive DC rails against positive-going transients. This polarity must be observed during PCB layout to ensure correct clamping behavior in the SMAJ6.0CH.
Does the SMAJ6.0CH meet automotive qualification standards?
Yes, the SMAJ6.0CH is AEC-Q101 qualified and tested per the full stress test schedule including HTGB, HTRB, TCT, and UHAST - confirming suitability for automotive powertrain, chassis, and body electronics. It also complies with ISO 7637-2 Pulse 1, 2a, 2b, 3a, and 3b waveforms, as documented in Taiwan Semiconductor's official A2102 datasheet for SMAJ6.0CH.
What is the maximum clamping voltage of the SMAJ6.0CH under surge conditions?
The SMAJ6.0CH has a maximum clamping voltage (VC) of 11.4 V when subjected to an 800 A peak pulse current with a 10/1000 µs waveform at TA = 25 °C. This value is guaranteed across production lots and represents the worst-case voltage imposed on the protected circuit during standardized surge testing - a key parameter verified in the SMAJ6.0CH electrical specifications table.
Can the SMAJ6.0CH be used in bidirectional applications?
No, the SMAJ6.0CH is strictly unidirectional and not rated for bidirectional operation. For symmetrical transient suppression, Taiwan Semiconductor specifies CH-suffixed parts like SMAJ6.0CH only for single-polarity clamping; bidirectional variants require CAH suffixes (e.g., SMAJ6.0CAH). Using SMAJ6.0CH in reverse-biased configurations risks exceeding its maximum reverse voltage rating and may cause failure.
What is the moisture sensitivity level (MSL) of the SMAJ6.0CH?
The SMAJ6.0CH has a moisture sensitivity level (MSL) of Level 1 per J-STD-020, meaning it can be stored indefinitely at ambient conditions (<30 °C / 60% RH) without baking prior to reflow soldering. This eliminates pre-conditioning steps in SMT assembly and supports standard lead-free reflow profiles - a verified specification confirmed in the "Mechanical Data" section of the SMAJ6.0CH datasheet.
SMAJ6.0CH Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Package/Case:
- DO-214AC, SMA
- Series:
- -
- 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:
- 11.4V
- Current - Peak Pulse (10/1000µs):
- 35.1A
- Power - Peak Pulse:
- 400W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
SMAJ6.0CH FAQ
1.How can I place an order for SMAJ6.0CH through Aetrix?
Please submit a Request for Quotation (RFQ) for SMAJ6.0CH 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 SMAJ6.0CH reliable?
The price and inventory of SMAJ6.0CH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMAJ6.0CH is usually 5 days.
3.What payment methods are accepted for SMAJ6.0CH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMAJ6.0CH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMAJ6.0CH?
SMAJ6.0CH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMAJ6.0CH 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 SMAJ6.0CH?
For technical support, including SMAJ6.0CH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMAJ6.0CH requirements.
6.How does Aetrix verify that SMAJ6.0CH is sourced from the original manufacturer or authorized distributors?
All SMAJ6.0CH 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 SMAJ6.0CH meets industry standards.
7.What is the process for return or replacement of SMAJ6.0CH?
All SMAJ6.0CH units undergo pre-shipment inspection (PSI). If there is an issue with SMAJ6.0CH, 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 SMAJ6.0CH part is unused and in its original packaging.
Return procedure for SMAJ6.0CH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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