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Alpha & Omega Semiconductor Inc. SMDJ6.0A
- Part No.:
- SMDJ6.0A
- Manufacturer:
- Alpha & Omega Semiconductor Inc.
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMDJ6.0A.pdf
- Description:
- 1CH 6.0V UNIDIRECTIONAL 3000W SM
- Quantity:
- Payment:
- Shipping:
Inventory:5,140
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Product details
Overview
SMDJ6.0A from Alpha & Omega Semiconductor is a unidirectional transient voltage suppressor diode designed for high-energy surge protection in DC power lines and signal interfaces. It features a 6.0 V reverse stand-off voltage (VRWM), 6.67–7.37 V breakdown voltage (VBR) at 10 mA, 10.3 V maximum clamping voltage at 291.3 A peak pulse current, and 3000 W peak pulse power dissipation on a 10/1000 µs waveform - deployed in industrial motor drives and automotive body control modules.
For engineers reviewing the SMDJ6.0A datasheet, pinout, applications, or equivalent options, key selection criteria include clamping performance under 3000 W surges, thermal resistance (RθJL = 15 °C/W), unidirectional polarity with cathode band marking, DO-214AB package compatibility, and compliance with J-STD-020 MSL Level 1.
Technical Context
The SMDJ6.0A operates as a silicon avalanche diode optimized for fast transient suppression. Its glass-passivated junction enables sub-1 ps response time from 0 V to breakdown, while its low-profile DO-214AB package supports surface-mount board space optimization and built-in strain relief for mechanical reliability.
Rated for -55 °C to +150 °C junction temperature, it delivers stable clamping under repetitive 0.01% duty cycle pulses when mounted on 8.0 mm × 8.0 mm copper pads. Its 800 µA maximum reverse leakage at VRWM ensures minimal standby power loss in protected circuits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRWM | 6.0 V - Maximum continuous reverse operating voltage before clamping begins |
| VBR @ IT=10 mA | 6.67–7.37 V - Confirmed breakdown range ensuring reliable turn-on during transients |
| Vc @ IPPM | 10.3 V - Clamping voltage at 291.3 A, limiting downstream voltage stress |
| PPPM (10/1000 µs) | 3000 W - Peak surge energy handling capacity without failure |
| RθJL | 15 °C/W - Low junction-to-lead thermal resistance enabling efficient heat transfer to PCB copper |
| TJ max | +150 °C - Maximum allowable junction temperature for sustained operation |
| IR @ VRWM | 800 µA - Reverse leakage current defining quiescent power loss in standby mode |
Pinout & Package
DO-214AB (SMC J-Bend) surface-mount package with molded plastic case and matte tin lead-free plating. Cathode denoted by color band; terminals solderable per MIL-STD-750 Method 2026.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point in forward conduction | Connected to lower-potential side of protected line; defines unidirectional current path |
| Cathode | Current exit point in forward conduction; clamping node in reverse bias | Marked with color band; tied to higher-potential rail or signal line to be protected |
Key Features
| Feature | Design Value |
|---|---|
| Fast response time | <1.0 ps - Enables clamping before sensitive ICs experience overvoltage damage |
| Glass passivated junction | Improved long-term reliability and moisture resistance vs. epoxy-passivated alternatives |
| MSL Level 1 rating | Compatible with standard reflow profiles up to 260 °C peak, eliminating pre-bake requirements |
| UL 94V-0 flammability | Self-extinguishing plastic housing meets safety standards for enclosed industrial equipment |
| Strain relief construction | Reduces mechanical stress on solder joints during thermal cycling or board flexure |
Applications
| Industrial Motor Drives | Automotive Body Control Modules |
|---|---|
Use Scenario: Protection of 12 V DC power rails feeding microcontrollers and gate drivers against load dump and inductive switching spikes. IC Role / Device Role / Timing Role: Unidirectional TVS diode placed across input supply pins to clamp transients to ≤10.3 V. Use Value: Prevents latch-up or permanent damage to MCUs rated for 16 V absolute maximum, leveraging 3000 W surge rating for ISO 7637-2 Pulse 5a compliance. | Use Scenario: Surge suppression on LIN bus lines exposed to ESD and battery reversal events in door module electronics. IC Role / Device Role / Timing Role: Standoff voltage (6.0 V) matches LIN nominal 12 V supply derated for noise margin; clamps ESD to safe levels within <1 ps. Use Value: Maintains signal integrity during 8 kV contact discharge (IEC 61000-4-2) without affecting 19.2 kbps data timing due to low capacitance and fast response. |
| Telecom Power Feeds | Renewable Energy Inverters |
Use Scenario: Input-stage protection for PoE-powered remote radios subjected to lightning-induced surges on 48 V DC feeds. IC Role / Device Role / Timing Role: Primary TVS in series with upstream fuse; absorbs 3000 W transients before downstream DC/DC converters. Use Value: Enables single-device protection for 48 V systems using stacked SMDJ6.0A arrays, avoiding complex multi-stage designs. | Use Scenario: DC-link overvoltage suppression in solar string inverters where PV array transients exceed 100 V. IC Role / Device Role / Timing Role: Used in parallel configurations to distribute 3000 W pulse energy across multiple devices on high-current bus bars. Use Value: Supports scalable protection architecture with RθJL = 15 °C/W enabling direct thermal coupling to heatsink-equipped PCBs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SAC5.0 | Lower PPPM (500 W), higher VRWM (5.0 V), same DO-214AB package | Limited to low-energy surges; unsuitable for ISO 7637-2 Pulse 5a or lightning-level events | Select only for cost-sensitive consumer-grade 5 V rail protection where 3000 W capability is unnecessary |
| SMDJ6.0CA | Bidirectional variant with identical VRWM (6.0 V), VBR, and PPPM; dual-clamping symmetry | Required for AC-coupled or bidirectional signal lines (e.g., RS-485, CAN); not interchangeable in unidirectional DC rails | Use SMDJ6.0CA only when protecting differential pairs or lines subject to polarity-reversal transients |
Compared with SAC5.0 and SMDJ6.0CA, the SMDJ6.0A provides optimal unidirectional 3000 W surge handling at 6.0 V standoff - making it the preferred choice for robust DC power rail protection where bidirectional clamping or reduced energy rating is not required.
Availability
SMDJ6.0A is available at Aetrix Electronics and suitable for industrial motor drives, automotive body control modules, and telecom power feeds requiring stable component supply, RoHS-compliant packaging, and traceable sourcing for production ramp.
Supply support for SMDJ6.0A 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
Alpha & Omega Semiconductor (AOS) is a fabless power semiconductor company specializing in high-efficiency MOSFETs, TVS diodes, and power ICs for computing, consumer, industrial, and automotive markets.
The SMDJ series is engineered specifically for high-power transient suppression in harsh environments - delivering 3000 W pulse capability, MSL Level 1 reflow compatibility, and UL 94V-0 safety certification in compact DO-214AB packages.
FAQ
What is the clamping voltage of the SMDJ6.0A under maximum surge conditions?
The SMDJ6.0A exhibits a maximum clamping voltage (VC) of 10.3 V when subjected to its rated peak pulse current of 291.3 A on a 10/1000 µs waveform. This value is measured per JEDEC standards and ensures downstream components see no more than 10.3 V during worst-case transients - critical for protecting 12 V logic rails and microcontrollers with 16 V absolute maximum ratings. The SMDJ6.0A maintains this clamping performance across its full operating temperature range.
Is the SMDJ6.0A suitable for automotive applications requiring ISO 7637-2 compliance?
Yes, the SMDJ6.0A is widely used in automotive body control modules to meet ISO 7637-2 Pulse 5a (load dump) requirements. Its 3000 W peak pulse power rating, 10.3 V clamping voltage, and ability to handle 291.3 A peak current enable robust protection of 12 V systems against 35 V/100 ms transients. The SMDJ6.0A's -55 °C to +150 °C operating range and AEC-Q101 stress qualification (per AOS documentation) further validate its suitability for under-hood and cabin applications.
How does the SMDJ6.0A differ from the bidirectional SMDJ6.0CA variant?
The SMDJ6.0A is unidirectional with a single cathode band marking, while the SMDJ6.0CA provides symmetrical clamping in both directions. Electrically, both share identical VRWM (6.0 V), VBR (6.67–7.37 V), and PPPM (3000 W), but the SMDJ6.0CA lacks polarity designation and clamps equally on positive and negative transients. The SMDJ6.0A must be oriented correctly in DC circuits; reversing it renders protection ineffective - unlike the SMDJ6.0CA, which requires no orientation.
What is the thermal resistance profile of the SMDJ6.0A, and how does it affect PCB layout?
The SMDJ6.0A has a typical junction-to-lead thermal resistance (RθJL) of 15 °C/W and junction-to-ambient (RθJA) of 75 °C/W when mounted on 8.0 mm × 8.0 mm copper pads. This means effective heat dissipation relies on generous copper pour connected to both terminals - especially the cathode pad. For high-repetition surges, designers should allocate ≥25 mm² of 2 oz copper per terminal and avoid narrow traces. The SMDJ6.0A's low RθJL enables direct thermal coupling to internal ground planes or external heatsinks.
Does the SMDJ6.0A require special handling or baking prior to reflow soldering?
No - the SMDJ6.0A is rated MSL Level 1 per J-STD-020, meaning it can withstand peak reflow temperatures up to 260 °C without moisture-induced damage. It ships in dry-packed tape-and-reel format and may be placed directly into standard lead-free reflow ovens without pre-baking, vacuum drying, or humidity-controlled storage. This simplifies manufacturing flow and reduces cost versus MSL Level 3+ components. The SMDJ6.0A's matte tin finish also ensures reliable solder wetting and joint integrity.
SMDJ6.0A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Alpha & Omega Semiconductor Inc.
- Package/Case:
- DO-214AB, SMC
- Series:
- -
- 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):
- 291.3A
- Power - Peak Pulse:
- 3000W (3kW)
- 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-214AB
SMDJ6.0A FAQ
1.How can I place an order for SMDJ6.0A through Aetrix?
Please submit a Request for Quotation (RFQ) for SMDJ6.0A 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 SMDJ6.0A reliable?
The price and inventory of SMDJ6.0A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMDJ6.0A is usually 5 days.
3.What payment methods are accepted for SMDJ6.0A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMDJ6.0A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMDJ6.0A?
SMDJ6.0A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMDJ6.0A 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 SMDJ6.0A?
For technical support, including SMDJ6.0A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMDJ6.0A requirements.
6.How does Aetrix verify that SMDJ6.0A is sourced from the original manufacturer or authorized distributors?
All SMDJ6.0A 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 SMDJ6.0A meets industry standards.
7.What is the process for return or replacement of SMDJ6.0A?
All SMDJ6.0A units undergo pre-shipment inspection (PSI). If there is an issue with SMDJ6.0A, 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 SMDJ6.0A part is unused and in its original packaging.
Return procedure for SMDJ6.0A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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