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Diodes Incorporated SMAJ16CA-13
- Part No.:
- SMAJ16CA-13
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMAJ16CA-13.pdf
- Description:
- TVS DIODE 16VWM 26VC SMA
- Quantity:
- Payment:
- Shipping:
Inventory:5,175
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Product details
Overview
SMAJ16CA-13 from Diodes Incorporated is a bi-directional 400W surface-mount transient voltage suppressor (TVS) diode with 16V reverse standoff voltage, 17.8–19.7V breakdown range at 1mA, and 26.0V max clamping voltage at 15.3A peak pulse current. It features glass-passivated die construction, UL 94V-0 molded plastic case, and is used for ESD and surge protection in DC power rails and I/O interfaces of industrial controllers and telecom equipment.
For engineers reviewing the SMAJ16CA-13 datasheet, SMAJ16CA-13 pinout, SMAJ16CA-13 application, or SMAJ16CA-13 equivalent, key selection criteria include clamping voltage margin vs. protected IC VMAX, unidirectional/bi-directional polarity requirement, 8.3ms surge waveform compliance, and RoHS-compliant lead-free plating compatibility with reflow profiles.
Technical Context
This bi-directional TVS operates symmetrically across both polarities, enabling robust protection against positive and negative transients without external polarity management. Its 400W peak pulse power rating is specified under JEDEC-standard 8.3ms half-sine waveform with ≤4 pulses/minute duty cycle and derated above 25°C ambient per Fig. 1.
The device achieves fast response time (<1ps) due to avalanche breakdown mechanism and exhibits low junction capacitance (typically <200pF at 0V for 16V grade), making it suitable for data line protection where signal integrity must be preserved alongside surge immunity.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 400W - Sustains single 8.3ms surges up to 15.3A without failure under defined thermal conditions. |
| Reverse Standoff Voltage (VRWM) | 16V - Maximum continuous DC or RMS voltage before significant leakage; sets upper limit for protected circuit operating voltage. |
| Breakdown Voltage (VBR) | 17.8–19.7V @ 1mA - Confirmed avalanche initiation range; ensures reliable turn-on before downstream component damage threshold. |
| Max Clamping Voltage (VC) | 26.0V @ IPP = 15.3A - Peak voltage seen by protected load during worst-case surge; defines minimum required IC overvoltage margin. |
| Leakage Current (IR) | 5.0µA @ VRWM - Low standby loss critical for battery-powered or high-impedance sensing nodes. |
| Operating Temperature | −55°C to +150°C - Supports deployment in automotive engine bays, industrial PLCs, and outdoor telecom enclosures. |
Pinout & Package
Package: SMA (DO-214AC), molded plastic case with cathode band omitted (bi-directional configuration). Dimensions: 4.00–4.60mm length × 2.29–2.92mm width × 1.27–1.63mm height; weight ≈0.064g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bi-directional surge conduction path | No polarity marking; terminals interchangeable - enables placement without orientation check on PCB. |
| Case | Thermal and mechanical interface | Molded plastic body rated UL 94V-0; provides insulation and mechanical anchoring during reflow and vibration. |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated die | Enhances long-term reliability and moisture resistance vs. epoxy-passivated alternatives in humid environments. |
| 400W peak pulse rating | Meets IEC 61000-4-5 Level 4 (4kV line-to-line) surge immunity requirements for industrial ports. |
| Lead-free / RoHS compliant | Matte tin finish compatible with Pb-free reflow profiles (J-STD-020C Level 1); no special handling required. |
| Fast response time | Avalanche-based clamping activates within picoseconds - protects sensitive logic before transient energy couples into traces. |
Applications
| Industrial PLC I/O Protection | Telecom DC Power Input |
|---|---|
Use Scenario: 24VDC analog input modules exposed to induced surges from relay switching and motor drives. IC Role / Device Role / Timing Role: Bi-directional TVS placed at connector entry point to clamp ±1kV transients before signal conditioning amplifiers. Use Value: 26.0V clamping ensures protected op-amps (e.g., AD8420) remain below absolute maximum ratings during surge events. | Use Scenario: -48V telecom power feed entering remote radio units with lightning-induced common-mode surges. IC Role / Device Role / Timing Role: Paired SMAJ16CA-13 devices on tip/ring lines provide symmetrical clamping to protect DC-DC converter front-end. Use Value: 400W rating handles 10/700µs telecom surge waveforms without degradation after repeated stress. |
| Automotive Body Control Module | USB-C Port ESD Protection |
Use Scenario: LIN bus lines in BCMs subjected to ISO 7637-2 pulse 1 and pulse 2a transients during load dump. IC Role / Device Role / Timing Role: Bi-directional suppression on LIN data pair, mounted close to connector to minimize trace inductance. Use Value: Low 16V VRWM aligns with 12V system nominal while maintaining margin above battery ripple peaks. | Use Scenario: VBUS line in USB-C receptacles requiring IEC 61000-4-2 ±15kV contact ESD protection. IC Role / Device Role / Timing Role: Primary clamping device upstream of USB PD controller, sized for 15.3A peak current per ESD event. Use Value: 26.0V clamping prevents latch-up in TUSB1046 or similar USB-C switch ICs during ESD discharge. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bi-directional TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ16CA from ON Semiconductor | Identical VRWM (16V), VBR (17.8–19.7V), VC (26.0V), but rated at 400W with slightly higher IR (10µA @ VRWM). | Same footprint and function; validated in automotive OEM designs per AEC-Q200. | Select when AEC-Q200 qualification is mandatory and supply chain diversification is required. |
| P6SMB16CA from Vishay | Same SMA package, 16V VRWM, but lower 600W peak power rating and higher 28.5V clamping at 14.3A. | Better suited for higher-energy surges but requires larger board area margin due to elevated clamping. | Choose when system-level testing shows 26.0V clamping is overly conservative and 28.5V is acceptable for protected ICs. |
Compared with SMAJ16CA-13, the ON Semiconductor variant offers tighter leakage control for ultra-low-power systems, while the Vishay P6SMB16CA trades clamping precision for higher surge energy handling - selection depends on whether voltage margin or energy capacity dominates the design constraint.
Availability
SMAJ16CA-13 is available at Aetrix Electronics and suitable for industrial PLC I/O protection, telecom DC power input, and automotive body control module designs requiring stable component supply and full RoHS compliance.
Supply support for SMAJ16CA-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, headquartered in Plano, Texas, with design centers across Asia and manufacturing in China, Taiwan, and the US.
The SMAJ series belongs to Diodes' transient voltage suppression portfolio, engineered specifically for high-reliability, surface-mount surge protection in industrial, telecom, and automotive applications where compact size and consistent clamping performance are critical.
FAQ
What does the "C" suffix in SMAJ16CA-13 indicate?
The "C" denotes bi-directional functionality: the device clamps transients of either polarity symmetrically across its terminals, eliminating the need for polarity-aware layout or external diode pairing. This differs from unidirectional SMAJ16A-13, which only clamps negative-going surges relative to cathode.
Is SMAJ16CA-13 compatible with lead-free reflow processes?
Yes - SMAJ16CA-13 uses matte tin lead-free plating qualified to J-STD-020C Level 1 moisture sensitivity, supporting standard Pb-free reflow profiles up to 260°C peak temperature. No pre-baking is required, and solderability meets MIL-STD-202 Method 208.
How does the 400W rating relate to real-world surge testing standards?
The 400W rating corresponds to a 15.3A peak current under the JEDEC-defined 8.3ms half-sine waveform, directly applicable to IEC 61000-4-5 combination wave (1.2/50µs voltage, 8/20µs current) testing at Level 4 (4kV line-to-line). Derating curves (Fig. 1) must be applied for ambient temperatures above 25°C.
Can SMAJ16CA-13 replace SMAJ16A-13 in an existing design?
Only if the circuit is inherently symmetrical or protected components tolerate bi-directional clamping. Unidirectional SMAJ16A-13 blocks reverse current in normal operation; replacing it with SMAJ16CA-13 may allow unintended conduction paths in DC-biased rails, potentially disrupting bias networks or causing leakage in sensor inputs.
SMAJ16CA-13 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Package/Case:
- DO-214AC, SMA
- Series:
- SMAJ
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 2
- Voltage - Reverse Standoff (Typ):
- 16V
- Voltage - Breakdown (Min):
- 17.8V
- Voltage - Clamping (Max) @ Ipp:
- 26V
- Current - Peak Pulse (10/1000µs):
- 15.4A
- Power - Peak Pulse:
- 400W
- Power Line Protection:
- Yes
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMAJ)
SMAJ16CA-13 FAQ
1.How can I place an order for SMAJ16CA-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMAJ16CA-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 SMAJ16CA-13 reliable?
The price and inventory of SMAJ16CA-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMAJ16CA-13 is usually 5 days.
3.What payment methods are accepted for SMAJ16CA-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMAJ16CA-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMAJ16CA-13?
SMAJ16CA-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMAJ16CA-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 SMAJ16CA-13?
For technical support, including SMAJ16CA-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMAJ16CA-13 requirements.
6.How does Aetrix verify that SMAJ16CA-13 is sourced from the original manufacturer or authorized distributors?
All SMAJ16CA-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 SMAJ16CA-13 meets industry standards.
7.What is the process for return or replacement of SMAJ16CA-13?
All SMAJ16CA-13 units undergo pre-shipment inspection (PSI). If there is an issue with SMAJ16CA-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 SMAJ16CA-13 part is unused and in its original packaging.
Return procedure for SMAJ16CA-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMAJ16CA-13 Tags
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ESD9B5.0ST5G
onsemi
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DESD3V3E1BL-7B
Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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onsemi
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Diodes Incorporated
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Diodes Incorporated
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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