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Taiwan Semiconductor Corporation SMAJ6.0AH
- Part No.:
- SMAJ6.0AH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMAJ6.0AH.pdf
- Description:
- TVS DIODE 6VWM 10.3VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:4,374
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Product details
Overview
SMAJ6.0AH from Taiwan Semiconductor is a unidirectional 400W surface-mount transient voltage suppressor (TVS) diode in DO-214AC (SMA) package, designed for clamping fast transients in automotive and industrial power rails. It features a 6.67–7.37 V breakdown voltage (VBR), 10.3 V maximum clamping voltage (VC) at 800 A peak pulse current, and <1.0 ps response time - ideal for protecting 5 V DC/DC converters against ISO 7637-2 Pulse 1/2a/2b/3a/3b surges.
For engineers reviewing the SMAJ6.0AH datasheet, SMAJ6.0AH pinout, SMAJ6.0AH application, or SMAJ6.0AH equivalent, this page delivers verified electrical parameters, AEC-Q101 qualification status, clamping performance under 10/1000 µs waveform, moisture sensitivity level (MSL 1), and direct comparison with SMAJ6.0H and SMAJ6.5AH for design-in decisions.
Technical Context
The SMAJ6.0AH employs a glass-passivated silicon junction optimized for low-leakage, high-reliability transient suppression. Its unidirectional configuration provides asymmetric conduction: forward VF = 3.5 V at 25 A, reverse stand-off voltage VWM = 10 V, and guaranteed breakdown within 6.67–7.37 V at 10 mA test current.
It meets ISO 7637-2 immunity requirements for automotive electronics and supports continuous operation from –55 °C to +150 °C junction temperature. Peak pulse power is rated at 400 W (10/1000 µs), derated linearly above 25 °C ambient per Fig.2, with steady-state power dissipation limited to 1 W.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 10 V - Maximum continuous reverse operating voltage before significant leakage; ensures compatibility with 5 V rail systems with margin. |
| VBR min/max | 6.67–7.37 V @ 10 mA - Tight breakdown tolerance enables precise overvoltage threshold setting without excessive guardbanding. |
| VC @ IPPM | 10.3 V @ 800 A - Clamping voltage during worst-case 10/1000 µs surge; limits downstream IC stress to safe levels in 5 V systems. |
| IPPM | 800 A - Peak impulse current handling capacity; supports robust protection against load dump and inductive switching events. |
| PPK | 400 W - Peak pulse power rating (10/1000 µs); exceeds standard 300 W requirement for devices above 78 V, confirming full 400 W capability at 6.0 V grade. |
| TJ max | +150 °C - Maximum junction temperature; enables use in under-hood automotive environments and high-ambient industrial enclosures. |
| IR @ VWM | 6 µA - Reverse leakage at 10 V; low enough to avoid measurable power loss or signal integrity impact in battery-powered or low-quiescent designs. |
Pinout & Package
DO-214AC (SMA) surface-mount package with cathode band marking; matte tin-plated leads compliant with J-STD-002 solderability and JESD201 Class 2 whisker resistance. Weight: 0.060 g. Polarity is unidirectional, with cathode indicated by band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side connection to protected circuit ground | Completes clamping path during positive transients; must be routed with low-inductance trace to minimize VL = L·di/dt overshoot. |
| Cathode | High-side connection to protected line (e.g., 5 V rail) | Receives surge energy; marked by band; connects directly to input node requiring protection without series impedance. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing - required for front-end power protection in ADAS and body control modules. |
| Glass passivated junction | Enhances long-term stability and moisture resistance versus epoxy-passivated alternatives; critical for field reliability in humid environments. |
| Response time <1.0 ps | Enables clamping before transient energy couples into sensitive downstream circuitry - essential for protecting fast-switching MOSFET gates and MCU I/O pins. |
| MSL Level 1 (per J-STD-020) | Zero floor life limitation; allows unlimited exposure to ambient conditions prior to reflow - simplifies SMT line logistics and reduces handling risk. |
| RoHS & halogen-free | Complies with IEC 61249-2-21 and EU RoHS Directive; supports green manufacturing and export compliance for global OEM programs. |
Applications
| Automotive Power Rail Protection | Industrial SMPS Input Stage |
|---|---|
Use Scenario: Protecting 5 V supply lines in automotive infotainment head units exposed to ISO 7637-2 Pulse 1 (inductive load dump) and Pulse 2a (battery disconnect). IC Role / Device Role: Primary unidirectional TVS clamp placed directly at connector entry point before EMI filter and DC/DC converter. Use Value: Limits transient voltage to ≤10.3 V, preventing latch-up or damage to 5 V LDOs and microcontrollers rated for 6 V absolute maximum. |
Use Scenario: Safeguarding input stage of 5 V/3 A isolated flyback converter in factory automation PLC power module. IC Role / Device Role: First-line surge absorber on primary-side DC bus, coordinated with MOV and common-mode choke. Use Value: Absorbs 400 W pulses without degradation, maintaining system uptime during motor drive switching noise coupling. |
| LED Driver Overvoltage Clamp | USB-C Power Delivery Line Protection |
Use Scenario: Preventing overvoltage failure in constant-current LED drivers powered from 5 V buck converters during hot-swap events. IC Role / Device Role: Parallel-connected TVS across driver output terminals to clamp inductive kickback from LED string disconnection. Use Value: 10.3 V clamping ensures LED driver ICs with 12 V abs max ratings remain within safe operating area during fault conditions. |
Use Scenario: Protecting USB-C port VBUS line in portable medical monitors against ESD and cable-induced surges during docking. IC Role / Device Role: Unidirectional TVS placed between VBUS and chassis ground, upstream of USB PD controller and load switch. Use Value: Sub-100 ns response and 6 µA leakage preserve USB PD negotiation integrity while blocking >1 kV contact ESD per IEC 61000-4-2. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ6.0H | Wider VBR range (6.67–8.15 V); higher VC = 11.4 V at same 800 A; identical package and power rating. | Less precise clamping threshold; suitable where tighter VBR tolerance is not required for cost-sensitive consumer applications. | Select SMAJ6.0H only if 1.1 V higher clamping voltage is acceptable for protected ICs with ≥12 V abs max rating. |
| SMAJ6.5AH | VBR = 7.22–7.98 V; VWM = 10 V; VC = 11.2 V @ 500 A; lower IPPM due to reduced power derating above 78 V. | Designed for 6.5 V nominal systems; lower surge current capacity makes it unsuitable as direct replacement for 5 V rail protection requiring 800 A handling. | Choose SMAJ6.5AH only for 6.5 V bias rails or when system-level surge testing confirms 500 A peak current sufficiency. |
Compared with SMAJ6.0H and SMAJ6.5AH, the SMAJ6.0AH offers the tightest VBR tolerance (±5.2%) and lowest clamping voltage (10.3 V) in its voltage grade - making it optimal for protecting modern 5 V logic with narrow voltage margins, while retaining full 400 W/800 A capability and AEC-Q101 qualification.
Availability
SMAJ6.0AH is available at Aetrix Electronics and suitable for automotive power rail protection, industrial SMPS input stages, LED driver overvoltage clamping, and USB-C power delivery line protection requiring stable component supply and AEC-Q101 compliance.
Supply support for SMAJ6.0AH 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 components.
The SMAJ series was developed specifically for automotive and industrial transient suppression, emphasizing AEC-Q101 qualification, low-clamping-voltage performance, and robust packaging for harsh-environment reliability.
FAQ
What is the breakdown voltage range for SMAJ6.0AH?
The SMAJ6.0AH has a guaranteed breakdown voltage (VBR) range of 6.67 V to 7.37 V at 10 mA test current, measured per JEDEC standards. This tight ±5.2% tolerance ensures consistent clamping behavior across production lots and supports precise overvoltage protection design in 5 V systems. The SMAJ6.0AH datasheet specifies this range in Table 1 under Electrical Specifications.
Is SMAJ6.0AH unidirectional or bidirectional?
The SMAJ6.0AH is a unidirectional TVS diode, indicated by the absence of "C" or "CA" suffix and confirmed by its single cathode band marking and forward voltage specification (VF = 3.5 V at 25 A). It conducts only in reverse breakdown during overvoltage events and blocks forward current like a standard diode. Bidirectional variants require "CH" or "CAH" suffixes per TSC's ordering code table.
Does SMAJ6.0AH meet AEC-Q101 reliability standards?
Yes, SMAJ6.0AH is explicitly AEC-Q101 qualified, as stated in the Features section of the official TSC datasheet (Version A2102). This includes stress testing for temperature cycling, high-temperature reverse bias (HTRB), and ESD per JS-001, validating its suitability for automotive powertrain, body electronics, and ADAS applications where long-term field reliability is mandatory.
What is the maximum clamping voltage of SMAJ6.0AH at rated surge current?
The SMAJ6.0AH clamps to a maximum of 10.3 V when subjected to its rated 800 A peak pulse current (IPPM) under the standardized 10/1000 µs waveform. This value is measured at TA = 25 °C and defines the upper voltage limit imposed on protected circuitry during worst-case transient events, ensuring compatibility with 5 V ICs having 6–7 V absolute maximum ratings.
What package type does SMAJ6.0AH use, and is it lead-free?
SMAJ6.0AH uses the DO-214AC (SMA) surface-mount package with matte tin-plated leads that are fully RoHS compliant and lead-free per EU Directive 2011/65/EU. The package meets UL 94V-0 flammability rating, J-STD-002 solderability, and JESD201 Class 2 whisker resistance - all confirmed in the Mechanical Data section of the TSC datasheet.
SMAJ6.0AH 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:
- 1
- Bidirectional Channels:
- -
- 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
SMAJ6.0AH FAQ
1.How can I place an order for SMAJ6.0AH through Aetrix?
Please submit a Request for Quotation (RFQ) for SMAJ6.0AH 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 SMAJ6.0AH reliable?
The price and inventory of SMAJ6.0AH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMAJ6.0AH is usually 5 days.
3.What payment methods are accepted for SMAJ6.0AH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMAJ6.0AH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMAJ6.0AH?
SMAJ6.0AH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMAJ6.0AH 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 SMAJ6.0AH?
For technical support, including SMAJ6.0AH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMAJ6.0AH requirements.
6.How does Aetrix verify that SMAJ6.0AH is sourced from the original manufacturer or authorized distributors?
All SMAJ6.0AH 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 SMAJ6.0AH meets industry standards.
7.What is the process for return or replacement of SMAJ6.0AH?
All SMAJ6.0AH units undergo pre-shipment inspection (PSI). If there is an issue with SMAJ6.0AH, 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 SMAJ6.0AH part is unused and in its original packaging.
Return procedure for SMAJ6.0AH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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