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Alpha & Omega Semiconductor Inc. SMDJ6.0CA
- Part No.:
- SMDJ6.0CA
- Manufacturer:
- Alpha & Omega Semiconductor Inc.
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMDJ6.0CA.pdf
- Description:
- 1CH 6.0V BIDIRECTIONAL 3000W SMD
- Quantity:
- Payment:
- Shipping:
Inventory:5,882
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Product details
Overview
SMDJ6.0CA from Alpha & Omega Semiconductor is a bi-directional transient voltage suppressor diode designed for high-energy ESD and surge protection in DC power rails and signal lines. 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 10/1000 µs waveform - deployed in industrial motor drives and telecom power supplies.
For engineers reviewing the SMDJ6.0CA datasheet, pinout, applications, or equivalent options, key selection criteria include bidirectional clamping capability, DO-214AB package compatibility with high-current PCB layouts, thermal resistance (RθJL = 15 °C/W), and low leakage (<800 µA @ VRWM) under sustained overvoltage stress.
Technical Context
The SMDJ6.0CA operates as a silicon avalanche diode with glass-passivated junction and bidirectional conduction symmetry - enabling identical clamping behavior in both polarities. Its fast response time (<1.0 ps) and 0.01% duty-cycle repetition rating support protection against lightning-induced surges and EFT bursts per IEC 61000-4-2/4-4/4-5.
Thermal performance is defined by junction-to-lead resistance of 15 °C/W (measured on 8.0 mm × 8.0 mm copper pads), allowing reliable power derating up to 150 °C operating junction temperature. The device meets J-STD-020 MSL Level 1 and UL 94V-0 flammability requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRWM | 6.0 V - Maximum continuous reverse voltage before clamping begins; sets operating margin above nominal 5 V rail. |
| VBR @ IT=10 mA | 6.67–7.37 V - Confirmed avalanche onset range; ensures predictable turn-on during transients. |
| Vc @ IPPM | 10.3 V - Clamped voltage at 291.3 A peak pulse; defines worst-case protected circuit overvoltage. |
| PPPM (10/1000 µs) | 3000 W - Peak surge energy handling capacity; supports Class III (lightning) IEC 61000-4-5 compliance. |
| IR @ VRWM | <800 µA - Low leakage ensures minimal standby power loss and no false triggering on stable rails. |
| TJ max | +150 °C - Enables operation in high-ambient environments such as enclosed power converters. |
| RθJL | 15 °C/W - Confirmed thermal path efficiency when mounted on specified 8 mm × 8 mm copper pads. |
Pinout & Package
DO-214AB (SMC J-Bend) surface-mount package with molded plastic case and matte tin lead-free plating. Cathode identification via color band - omitted for bi-directional variants like SMDJ6.0CA, which has symmetrical terminals.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode | Bi-directional avalanche junction terminals | Identical electrical behavior in either polarity; no fixed anode/cathode assignment - enables single-component protection of AC-coupled or floating lines. |
| Case | Non-electrical mechanical interface | Plastic body provides strain relief and UL 94V-0 flame resistance; no thermal or electrical connection to die. |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable VBR tolerance and long-term reliability under repeated surge stress without degradation. |
| Built-in strain relief | Reduces mechanical stress on solder joints during thermal cycling - critical for automotive and industrial field deployments. |
| Fast response time <1.0 ps | Clamps transients before downstream ICs experience damaging voltage overshoot - essential for protecting high-speed logic and analog inputs. |
| MSL Level 1 rating | Supports standard reflow profiles up to 260 °C peak without moisture-induced popcorning or delamination. |
| Low profile DO-214AB | Enables compact board layout while maintaining 3000 W surge capability - superior power density vs. larger DO-214AA packages. |
Applications
| Industrial Motor Drives | Telecom Power Supplies |
|---|---|
Use Scenario: Protection of 24 V DC control bus against inductive kickback from relay coils and contactor switching. IC Role / Device Role / Timing Role: Bidirectional TVS diode absorbing repetitive 300–500 V, 100 ns spikes without degradation. Use Value: Prevents latch-up and gate oxide damage in isolated RS-485 transceivers and microcontroller I/O buffers. | Use Scenario: Input-stage surge suppression on -48 V telecom rectifier outputs exposed to lightning-induced common-mode surges. IC Role / Device Role / Timing Role: Primary clamping element limiting differential-mode overvoltage to ≤10.3 V during 3 kA IEC 61000-4-5 combination wave events. Use Value: Maintains system uptime by eliminating fuse blowing and MOSFET failure in front-end DC-DC stages. |
| Automotive Body Control Modules | Smart Energy Meters |
Use Scenario: CAN FD bus line protection against load dump and jump-start transients in 12 V vehicle networks. IC Role / Device Role / Timing Role: Bi-directional clamping device placed across CANH/CANL differential pair with <1.0 ps response. Use Value: Preserves signal integrity and prevents transceiver shutdown during ISO 7637-2 Pulse 5a (load dump) events up to 60 V. | Use Scenario: Surge hardening of 3-phase AC metering inputs connected to overhead distribution lines. IC Role / Device Role / Timing Role: Secondary-level protector after MOV-based primary stage, clamping residual 6 kV/3 kA surges to safe levels. Use Value: Extends meter lifetime by reducing cumulative degradation of precision ADC front-end components. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SAC5.0-03 | Lower PPPM (3 kW same), but higher VBR min (6.4 V) and tighter VBR tolerance (±5%); DO-214AC package with different thermal pad geometry. | Preferred for space-constrained designs where RθJA < 60 °C/W is required; less suitable for high-reliability industrial use due to non-MSL1 rating. | Select SAC5.0-03 only if board layout allows DO-214AC footprint and thermal management uses smaller copper areas. |
| P6SMB6.0CA | Same VRWM (6.0 V) and bidirectional function, but lower PPPM (600 W); DO-214AA package with higher RθJL (20 °C/W) and no strain relief. | Acceptable for low-energy consumer electronics; insufficient for IEC 61000-4-5 Level 3+ or industrial motor drive applications. | Choose P6SMB6.0CA only for cost-sensitive, low-surge-risk applications where 3000 W headroom is unnecessary. |
Compared with SAC5.0-03 and P6SMB6.0CA, the SMDJ6.0CA delivers superior thermal robustness (RθJL = 15 °C/W), guaranteed MSL1 process compatibility, and built-in mechanical strain relief - making it the preferred choice for mission-critical industrial and telecom infrastructure designs requiring long-term surge endurance.
Availability
SMDJ6.0CA is available at Aetrix Electronics and suitable for industrial motor drives, telecom power supplies, automotive body control modules, and smart energy meters requiring stable component supply across multi-year production cycles.
Supply support for SMDJ6.0CA 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
Alpha & Omega Semiconductor (AOS) is a fabless power semiconductor company specializing in high-efficiency MOSFETs, TVS diodes, and power ICs for industrial, computing, and communications markets.
The SMDJ series was engineered specifically for high-power, surface-mount transient suppression in harsh environments - emphasizing low clamping ratio, repeatable surge endurance, and RoHS-compliant green packaging.
FAQ
What does the 'CA' suffix indicate in SMDJ6.0CA?
The 'CA' suffix in SMDJ6.0CA denotes a bi-directional configuration - meaning the device provides symmetrical clamping in both polarities, unlike the unidirectional 'A' variant. This makes SMDJ6.0CA ideal for protecting AC-coupled interfaces, differential buses like CAN or RS-485, and floating power domains where polarity reversal may occur during fault conditions.
Is SMDJ6.0CA compatible with lead-free reflow processes?
Yes, SMDJ6.0CA is fully compatible with lead-free reflow processes. It carries MSL Level 1 rating per J-STD-020, with a maximum peak temperature of 260 °C, and features matte tin lead-free plating. No special baking or handling is required prior to assembly, supporting standard high-volume SMT manufacturing flows.
How does the clamping voltage of SMDJ6.0CA compare to its breakdown voltage?
SMDJ6.0CA has a breakdown voltage (VBR) range of 6.67–7.37 V at 10 mA test current, while its maximum clamping voltage (Vc) is 10.3 V at 291.3 A peak pulse current. This 1.4× clamping ratio reflects efficient avalanche conduction and ensures protected circuits remain within safe operating limits during high-energy transients.
Can SMDJ6.0CA be used in place of a unidirectional SMDJ6.0A?
No - SMDJ6.0CA and SMDJ6.0A are not interchangeable without circuit review. While both share VRWM (6.0 V) and similar VBR, the CA version is bi-directional with no cathode marking and symmetric I-V characteristics, whereas the A version is unidirectional with defined polarity. Substitution requires verifying that reverse-polarity conduction is acceptable in the target application.
What is the maximum steady-state power dissipation of SMDJ6.0CA at 25°C ambient?
At 25°C ambient, SMDJ6.0CA has no specified steady-state power rating because it is designed for transient-only operation. Its DC power handling is limited by thermal resistance: with RθJL = 15 °C/W and TJmax = 150 °C, continuous dissipation must stay below ~8.3 W to avoid exceeding junction temperature - but this is not a rated operating condition. SMDJ6.0CA is intended solely for short-duration surge suppression.
SMDJ6.0CA 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:
- -
- Bidirectional Channels:
- 1
- 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
SMDJ6.0CA FAQ
1.How can I place an order for SMDJ6.0CA through Aetrix?
Please submit a Request for Quotation (RFQ) for SMDJ6.0CA 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 SMDJ6.0CA reliable?
The price and inventory of SMDJ6.0CA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMDJ6.0CA is usually 5 days.
3.What payment methods are accepted for SMDJ6.0CA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMDJ6.0CA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMDJ6.0CA?
SMDJ6.0CA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMDJ6.0CA 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 SMDJ6.0CA?
For technical support, including SMDJ6.0CA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMDJ6.0CA requirements.
6.How does Aetrix verify that SMDJ6.0CA is sourced from the original manufacturer or authorized distributors?
All SMDJ6.0CA 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 SMDJ6.0CA meets industry standards.
7.What is the process for return or replacement of SMDJ6.0CA?
All SMDJ6.0CA units undergo pre-shipment inspection (PSI). If there is an issue with SMDJ6.0CA, 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 SMDJ6.0CA part is unused and in its original packaging.
Return procedure for SMDJ6.0CA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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