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Alpha & Omega Semiconductor Inc. SMDJ16A
- Part No.:
- SMDJ16A
- Manufacturer:
- Alpha & Omega Semiconductor Inc.
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMDJ16A.pdf
- Description:
- 1CH 16V UNIDIRECTIONAL 3000W SMD
- Quantity:
- Payment:
- Shipping:
Inventory:2,963
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Product details
Overview
SMDJ16A from Alpha & Omega Semiconductor is a unidirectional transient voltage suppressor diode (TVS) designed for high-energy ESD and surge protection in DC power rails and signal lines. It features a 16.0 V reverse stand-off voltage (VRWM), 17.8–19.7 V breakdown voltage (VBR) at 1 mA, 26.0 V maximum clamping voltage (VC) at 115.4 A peak pulse current, and 3000 W peak pulse power rating on 10/1000 µs waveform - deployed in industrial power supplies and automotive body control modules.
For engineers reviewing the SMDJ16A datasheet, pinout, applications, or equivalent options, key selection criteria include clamping performance under 115.4 A surge, thermal resistance (RθJA = 75 °C/W), unidirectional polarity with cathode band marking, DO-214AB package compatibility, and compliance with J-STD-020 MSL Level 1 reflow.
Technical Context
The SMDJ16A operates as a silicon avalanche diode optimized for fast transient suppression. Its glass-passivated junction enables sub-1.0 ps response time from 0 V to breakdown, while the low-profile DO-214AB (SMC J-Bend) package supports surface-mount board space optimization and built-in strain relief for mechanical reliability.
It delivers 3000 W peak pulse power handling per 10/1000 µs waveform with 0.01% duty cycle repetition rate, and maintains stable clamping across -55 °C to +150 °C operating junction temperature range. Thermal resistance values (RθJL = 15 °C/W, RθJA = 75 °C/W) are specified with 8.0 mm × 8.0 mm copper pads per terminal.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRWM | 16.0 V - Maximum continuous reverse operating voltage before clamping begins |
| VBR @ IT=1 mA | 17.8–19.7 V - Confirmed breakdown threshold ensuring predictable turn-on during transients |
| VC @ IPPM | 26.0 V - Clamped voltage at 115.4 A peak pulse, limiting downstream IC stress |
| PPPM | 3000 W - Peak surge energy absorption capability on standard 10/1000 µs waveform |
| TJ max | +150 °C - Maximum junction temperature enabling operation in under-hood automotive environments |
| Polarity | Unidirectional - Cathode band-marked device requiring correct orientation in DC rail protection |
| MSL Rating | Level 1 per J-STD-020 - Supports lead-free reflow up to 260 °C peak without moisture-induced damage |
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 are solderable per MIL-STD-750, Method 2026.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | DC return path / low-side connection | Connected to ground or lower-potential node in unidirectional TVS configuration |
| Cathode | Protected line input / high-side connection | Marked with band; connects to line being protected (e.g., 12 V rail); conducts during reverse transient |
Key Features
| Feature | Design Value |
|---|---|
| Fast response time | <1.0 ps - Enables suppression of nanosecond-scale ESD events before sensitive circuitry reacts |
| Glass passivated junction | Enhanced long-term reliability and stable VBR over temperature and life cycles |
| Built-in strain relief | Reduces mechanical stress at lead-to-body interface during board flexure or thermal cycling |
| Low profile DO-214AB | Minimizes PCB footprint and height - critical for compact power converter layouts |
| UL 94V-0 flammability | Self-extinguishing plastic housing meets safety requirements for enclosed industrial equipment |
Applications
| Automotive Body Control Module (BCM) | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting 12 V supply inputs in BCM against load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery rail and regulator input to clamp surges above 26.0 V. Use Value: Limits voltage seen by downstream LDOs and microcontrollers to safe levels during 3000 W transients. | Use Scenario: Safeguarding 24 V digital input channels in programmable logic controllers from field-wiring induced surges. IC Role / Device Role / Timing Role: Front-end clamping device on isolated input stage, absorbing repetitive 10/1000 µs transients. Use Value: Maintains signal integrity and prevents false triggering or latch-up in optocoupled input circuits. |
| Telecom Power Supply Input | Medical Diagnostic Equipment DC Rails |
Use Scenario: Secondary-side overvoltage protection on 48 V telecom rectifier outputs exposed to lightning-induced surges. IC Role / Device Role / Timing Role: Standoff-rated TVS on output bus, activated only during >16 V excursions. Use Value: Prevents catastrophic failure of downstream DC-DC converters and FPGA power domains. | Use Scenario: Surge protection on internal 5 V/3.3 V DC distribution networks in imaging subsystems. IC Role / Device Role / Timing Role: Localized clamping element near high-precision ADCs and sensor interfaces. Use Value: Ensures <26.0 V transient excursion during ESD events, preserving measurement accuracy and data integrity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SAC16 | Same VRWM (16 V), but lower PPPM (1500 W) and higher VC (27.5 V at 100 A) | Rated for lower-energy transients; less suitable for automotive load dump | Select SMDJ16A where 3000 W surge immunity is required per ISO 16750-2 |
| 1.5KE16A | Through-hole TO-218 package; identical electrical specs but incompatible mounting | Requires PCB redesign; not drop-in for SMD layouts | Choose SMDJ16A for automated assembly and space-constrained designs |
Compared with SAC16 and 1.5KE16A, the SMDJ16A provides superior surge robustness in surface-mount form factor - delivering 3000 W clamping capacity and verified MSL1 reflow compatibility without layout compromise.
Availability
SMDJ16A is available at Aetrix Electronics and suitable for automotive body control modules, industrial PLC I/O protection, and telecom power supply inputs requiring stable component supply, RoHS-compliant packaging, and J-STD-020 MSL1 process support.
Supply support for SMDJ16A 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 MOSFETs, TVS diodes, and power ICs for high-efficiency power conversion and protection.
The SMDJ series is engineered for high-power transient suppression in harsh environments - targeting automotive, industrial, and telecom applications demanding 3000 W surge capability and reliable unidirectional/bidirectional clamping.
FAQ
What is the maximum clamping voltage of the SMDJ16A under peak pulse conditions?
The SMDJ16A has a maximum clamping voltage (VC) of 26.0 V when subjected to its rated peak pulse current of 115.4 A on a 10/1000 µs waveform. This value is measured at the device terminals and ensures downstream components experience no more than 26.0 V during transient events - critical for protecting 3.3 V, 5 V, and 12 V logic and power stages. The SMDJ16A achieves this clamping performance while maintaining low leakage (<2.0 µA at 16.0 V).
Does the SMDJ16A support lead-free reflow soldering processes?
Yes, the SMDJ16A meets J-STD-020 MSL Level 1 specifications and is qualified for lead-free reflow with a maximum peak temperature of 260 °C. Its matte tin lead-free plating and DO-214AB package construction ensure reliable wetting and intermetallic formation without delamination or popcorning. The SMDJ16A's moisture sensitivity level allows indefinite floor life at ≤30 °C/60% RH, eliminating bake requirements prior to assembly.
How does the SMDJ16A differ from bidirectional variants like SMDJ16CA?
The SMDJ16A is unidirectional with a single cathode band and protects against positive transients on DC lines; SMDJ16CA is bidirectional and symmetrical, suppressing both polarities - used in AC-coupled or floating signal paths. The SMDJ16A exhibits lower reverse leakage (<2.0 µA) and is marked "PEP", whereas SMDJ16CA is marked "DEP" and intended for bipolar applications such as RS-485 or CAN bus lines where voltage reversals occur.
What is the thermal resistance from junction to ambient for the SMDJ16A?
The SMDJ16A has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W when mounted on 8.0 mm × 8.0 mm copper pads per terminal. This value assumes standard JEDEC test conditions and directly impacts steady-state power dissipation limits - for example, at 1.0 W ambient power, junction temperature rise is ~75 °C above ambient. The SMDJ16A also specifies RθJL = 15 °C/W for improved heat transfer to PCB copper planes.
Can the SMDJ16A be used in life support systems?
No - Alpha & Omega Semiconductor explicitly prohibits use of the SMDJ16A in life support devices or systems, including surgical implants or equipment whose failure could cause significant injury. The SMDJ16A is not certified for such applications, and AOS disclaims all liability arising from unauthorized use. Engineers must select components with formal life support qualification if deploying in medical or aerospace-critical systems - the SMDJ16A remains appropriate for industrial, automotive, and telecom non-critical protection roles.
SMDJ16A 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):
- 16V
- Voltage - Breakdown (Min):
- 17.8V
- Voltage - Clamping (Max) @ Ipp:
- 26V
- Current - Peak Pulse (10/1000µs):
- 115.4A
- 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
SMDJ16A FAQ
1.How can I place an order for SMDJ16A through Aetrix?
Please submit a Request for Quotation (RFQ) for SMDJ16A 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 SMDJ16A reliable?
The price and inventory of SMDJ16A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMDJ16A is usually 5 days.
3.What payment methods are accepted for SMDJ16A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMDJ16A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMDJ16A?
SMDJ16A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMDJ16A 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 SMDJ16A?
For technical support, including SMDJ16A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMDJ16A requirements.
6.How does Aetrix verify that SMDJ16A is sourced from the original manufacturer or authorized distributors?
All SMDJ16A 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 SMDJ16A meets industry standards.
7.What is the process for return or replacement of SMDJ16A?
All SMDJ16A units undergo pre-shipment inspection (PSI). If there is an issue with SMDJ16A, 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 SMDJ16A part is unused and in its original packaging.
Return procedure for SMDJ16A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMDJ16A Tags
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ESD9B5.0ST5G
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DESD3V3E1BL-7B
Diodes Incorporated
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Diodes Incorporated
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D5V0P1B2LP-7B
Diodes Incorporated
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Diodes Incorporated
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onsemi
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DESD5V0U1BB-7
Diodes Incorporated
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D12V0L1B2LP-7B
Diodes Incorporated
-
PESD2V0Y1BSFYL
Nexperia USA Inc.
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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