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Diodes Incorporated SMAJ16A-13
- Part No.:
- SMAJ16A-13
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMAJ16A-13.pdf
- Description:
- TVS DIODE 16VWM 26VC SMA
- Quantity:
- Payment:
- Shipping:
Inventory:4,768
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Product details
Overview
SMAJ16A-13 from Diodes Incorporated is a unidirectional 400W surface-mount transient voltage suppressor (TVS) diode designed for primary overvoltage protection in DC power rails and signal lines. It features a 16V reverse standoff voltage (VRWM), 17.8–19.7V breakdown voltage (VBR) at 1mA, 26.0V maximum clamping voltage (VC) at 15.3A peak pulse current (IPP), and operates from –55°C to +150°C.
For engineers reviewing the SMAJ16A-13 datasheet, SMAJ16A-13 pinout, SMAJ16A-13 application, or SMAJ16A-13 equivalent, key selection criteria include clamping voltage margin relative to protected IC VCC, peak pulse current handling under IEC 61000-4-5 surge conditions, thermal derating at elevated ambient temperatures, and compatibility with automated SMT assembly using SMA package footprint.
Technical Context
This TVS diode employs a glass-passivated silicon junction optimized for fast response (<1 ps) to transient events such as ESD (IEC 61000-4-2), EFT (IEC 61000-4-4), and lightning-induced surges (IEC 61000-4-5). Its unidirectional configuration provides low-leakage reverse blocking below VRWM while enabling robust forward conduction during positive transients.
The device is rated for 400W non-repetitive peak pulse power (8.3ms half-sine waveform), with steady-state power dissipation of 1.0W at TL = 75°C. Clamping performance is specified at IPP = 15.3A, delivering VC = 26.0V - critical for protecting 15–18V logic or power management ICs without overstressing downstream components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 400W - sustains single 8.3ms surge events per JEDEC standard without failure |
| Reverse Standoff Voltage (VRWM) | 16V - maximum continuous DC voltage before significant leakage; sets upper limit for protected rail |
| Breakdown Voltage (VBR) | 17.8–19.7V @ 1mA - defines onset of avalanche conduction; ensures reliable turn-on before system damage |
| Clamping Voltage (VC) | 26.0V @ IPP = 15.3A - actual voltage seen by protected circuit during worst-case surge |
| Peak Pulse Current (IPP) | 15.3A - maximum transient current the device safely shunts to ground |
| Operating Temperature | –55°C to +150°C - supports automotive under-hood, industrial control, and outdoor power applications |
| Package | SMA (DO-214AC) - industry-standard SMT outline with 4.0–4.6mm body width and 2.01–2.30mm terminal spacing |
Pinout & Package
Package: SMA (DO-214AC), molded plastic case with UL 94V-0 flammability rating, cathode band polarity indicator, and moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current sink (unidirectional) | Connected to protected line; conducts surge current toward ground when voltage exceeds VBR |
| Cathode | Reference node / ground return | Connected to system ground; completes clamping path; marked with visible band |
Key Features
| Feature | Design Value |
|---|---|
| 400W Peak Pulse Power | Enables protection against high-energy surges including IEC 61000-4-5 Level 4 (4kV/2Ω) |
| Glass-Passivated Die | Improves reliability and stability of breakdown characteristics over temperature and lifetime |
| Fast Response Time | <1 ps junction response ensures clamping initiates before sensitive ICs experience overvoltage stress |
| RoHS-Compliant & Lead-Free | Meets EU Directive Annex exemptions; compatible with Pb-free reflow profiles (J-STD-020C) |
| SMA Package Compatibility | Standardized footprint enables drop-in replacement and automated placement on high-volume PCBs |
Applications
| Industrial Motor Drives | Automotive Body Control Modules |
|---|---|
Use Scenario: Protection of 12V CAN bus transceivers and microcontroller I/O against load dump and jump-start transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between CAN_H/CAN_L lines and chassis ground to clamp differential and common-mode surges. Use Value: Limits clamped voltage to 26.0V, staying within absolute maximum ratings of ISO 11898-2 compliant transceivers. | Use Scenario: Input rail protection for 16V-rated power management ICs powering door lock actuators and window lift controllers. IC Role / Device Role / Timing Role: Primary overvoltage clamp on fused battery feed, positioned upstream of DC-DC converters. Use Value: Withstands 400W surges while maintaining VRWM = 16V - matches nominal system voltage with margin for ripple and regulation tolerance. |
| Telecom Power Supplies | Smart Energy Meters |
Use Scenario: Secondary-side DC output protection in 12–24V telecom adapters exposed to AC line surges and hot-plug events. IC Role / Device Role / Timing Role: Output rail TVS suppressing overshoot during regulator startup and transient load steps. Use Value: 26.0V clamping ensures downstream 24V logic remains within safe operating area during 10/1000μs surges up to 15.3A. | Use Scenario: Surge protection on 16V auxiliary supply feeding metrology ADCs and real-time clocks in ANSI C12.1-compliant meters. IC Role / Device Role / Timing Role: Point-of-load TVS on isolated 16V bias rail, guarding against induced surges from nearby switching loads. Use Value: 15.3A IPP rating aligns with IEC 61000-4-5 test requirements for Class III meter installations. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ16CA-13 | Bi-directional version; symmetric clamping for AC or bidirectional signal lines | Required where both positive and negative transients must be suppressed (e.g., RS-485, audio lines) | Select only if bidirectional protection is needed; otherwise, unidirectional SMAJ16A-13 offers lower leakage and tighter VBR tolerance |
| P6SMB16A-13-F | Same VRWM and VC, but rated for 600W peak power and uses SMB package (larger footprint) | Better suited for higher-energy surges or designs requiring greater thermal mass | Choose when surge energy exceeds 400W capability or board layout allows SMB's 5.3mm width |
Compared with SMAJ16CA-13 and P6SMB16A-13-F, SMAJ16A-13 delivers optimal balance of compact SMA footprint, precise 16V standoff, and verified 400W surge handling - making it ideal for space-constrained 12–16V DC systems where unidirectional clamping suffices.
Availability
SMAJ16A-13 is available at Aetrix Electronics and suitable for industrial motor drives, automotive body control modules, telecom power supplies, and smart energy meters requiring stable component supply across extended production lifecycles.
Supply support for SMAJ16A-13 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
Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, specializing in high-reliability protection, power management, and signal integrity solutions for industrial, automotive, and computing markets.
The SMAJ series belongs to Diodes' transient voltage suppressor product line, engineered specifically for robust, cost-effective overvoltage protection in high-volume SMT applications with stringent thermal and surge immunity requirements.
FAQ
What is the maximum clamping voltage of SMAJ16A-13 at its rated peak pulse current?
The maximum clamping voltage (VC) is 26.0V at a peak pulse current (IPP) of 15.3A, measured using the standardized 8.3ms half-sine waveform per JEDEC. This value is guaranteed across the full operating temperature range and represents the highest voltage imposed on the protected circuit during worst-case surge conditions.
Is SMAJ16A-13 RoHS compliant and lead-free?
Yes, SMAJ16A-13 is RoHS compliant per EU Directive 2002/95/EC (Annex exemptions applied), with a matte tin lead finish. It meets J-STD-020C moisture sensitivity level 1 and is qualified for Pb-free reflow soldering up to 260°C peak temperature.
How does the SMAJ16A-13 differ from the bi-directional SMAJ16CA-13?
SMAJ16A-13 is unidirectional with cathode-band polarity and blocks reverse current below 16V, while SMAJ16CA-13 is bi-directional with no polarity marking and clamps both polarities symmetrically. The unidirectional version exhibits lower reverse leakage (<5µA at VRWM) and tighter VBR tolerance, making it preferred for DC rail protection.
Can SMAJ16A-13 be used in parallel to increase surge current handling?
No - paralleling TVS diodes is not recommended due to mismatched breakdown voltages causing uneven current sharing and potential thermal runaway. For higher IPP, select a single device with appropriate rating (e.g., P6SMB16A-13-F) or verify matched VBR binning with manufacturer guidance.
SMAJ16A-13 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Package/Case:
- DO-214AC, SMA
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- 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):
- 15.3A
- Power - Peak Pulse:
- 400W
- 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:
- SMA
SMAJ16A-13 FAQ
1.How can I place an order for SMAJ16A-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMAJ16A-13 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 SMAJ16A-13 reliable?
The price and inventory of SMAJ16A-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMAJ16A-13 is usually 5 days.
3.What payment methods are accepted for SMAJ16A-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMAJ16A-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMAJ16A-13?
SMAJ16A-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMAJ16A-13 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 SMAJ16A-13?
For technical support, including SMAJ16A-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMAJ16A-13 requirements.
6.How does Aetrix verify that SMAJ16A-13 is sourced from the original manufacturer or authorized distributors?
All SMAJ16A-13 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 SMAJ16A-13 meets industry standards.
7.What is the process for return or replacement of SMAJ16A-13?
All SMAJ16A-13 units undergo pre-shipment inspection (PSI). If there is an issue with SMAJ16A-13, 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 SMAJ16A-13 part is unused and in its original packaging.
Return procedure for SMAJ16A-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMAJ16A-13 Tags
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