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Diodes Incorporated SMAJ110A-13-F
- Part No.:
- SMAJ110A-13-F
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMAJ110A-13-F.pdf
- Description:
- TVS DIODE 110V 177V SMA
- Quantity:
- Payment:
- Shipping:
Inventory:2,280
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Product details
Overview
SMAJ110A-13-F from Diodes Incorporated is a unidirectional 400W surface-mount transient voltage suppressor (TVS) diode designed for primary overvoltage protection in DC power lines and signal interfaces. It features a 110V reverse standoff voltage (VRWM), 122–135V breakdown range (VBR), 177V maximum clamping voltage at 2.3A peak pulse current (IPP), and SMA package with cathode band polarity indicator.
For engineers reviewing the SMAJ110A-13-F datasheet, SMAJ110A-13-F pinout, SMAJ110A-13-F application, or SMAJ110A-13-F equivalent, key selection criteria include clamping performance under 8.3ms surge, thermal derating above +25°C ambient, unidirectional polarity requirement, and compatibility with automated SMT assembly on IPC Class 2/3 PCBs.
Technical Context
This TVS diode operates as a fast-acting shunt clamp during transient events, diverting surge current away from protected circuitry once reverse voltage exceeds its breakdown threshold. Its glass-passivated junction ensures stable VBR tolerance and low leakage (<5µA at VRWM).
The device responds within <1.0ps to ESD and lightning-induced transients per IEC 61000-4-2/4-5, with clamping maintained across -55°C to +150°C operating temperature range. Pulse power capability de-rates linearly above +25°C ambient per Fig. 1 in DS19005 Rev. 19-2.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 400W - sustains single 8.3ms half-sine surges without failure under defined test conditions |
| Reverse Standoff Voltage (VRWM) | 110V - maximum continuous DC or RMS voltage before significant leakage begins |
| Breakdown Voltage (VBR) | 122–135V @ 1mA - guaranteed conduction onset window for reliable clamping margin |
| Max Clamping Voltage (VC) | 177V @ IPP = 2.3A - upper limit of voltage seen by protected load during worst-case surge |
| Peak Pulse Current (IPP) | 2.3A - maximum non-repetitive surge current the device can safely clamp |
| Leakage Current (IR) | <5µA @ 110V - minimal standby power loss and signal integrity impact in high-impedance circuits |
| Package | SMA - industry-standard surface-mount outline (4.0–4.6mm length, 2.29–2.92mm width) compatible with standard reflow profiles |
Pinout & Package
Two-terminal SMA package with unidirectional polarity: Cathode indicated by a visible band on the top surface. No internal pin numbering; anode and cathode are defined by physical orientation relative to the band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference terminal | Connected to ground or lowest potential node; completes clamping path during reverse transient |
| Cathode | High-side surge input terminal | Connected to protected line; receives transient energy and initiates avalanche conduction when VRWM exceeded |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated die construction | Ensures consistent VBR tolerance, low leakage drift over time, and resistance to humidity-induced degradation |
| 400W peak pulse power rating | Supports robust protection against IEC 61000-4-5 Level 4 (4kV/2Ω) surges on 12–48V DC rails |
| UL 94V-0 molded plastic case | Meets flammability safety requirements for industrial and automotive control modules |
| Lead-free, RoHS 3 & "Green" compliant | Contains <900ppm Br, <900ppm Cl, <1000ppm Sb - suitable for environmentally regulated end equipment |
Applications
| Industrial PLC I/O Protection | Automotive Body Control Module (BCM) |
|---|---|
Use Scenario: Protecting 24V digital input channels in programmable logic controllers from induced surges on long field wiring. IC Role / Device Role / Timing Role: Unidirectional shunt TVS placed between input line and chassis ground to clamp transients before reaching optocoupler or MCU GPIO. Use Value: Limits clamped voltage to ≤177V, preserving 24V-rated interface ICs and enabling >100,000 surge cycles per channel per DS19005 lifetime data. | Use Scenario: Safeguarding LIN bus transceivers and sensor supply lines in body electronics against load dump and jump-start spikes. IC Role / Device Role / Timing Role: Primary overvoltage clamp on 12V battery-fed subsystem rails, coordinated with secondary ceramic capacitors for sub-100ns response. Use Value: Withstands 40A surge for 8.3ms (per IFSM rating), maintaining clamping below 177V to prevent damage to 3.3V/5V LDOs and CAN/LIN PHYs downstream. |
| Telecom Power Feeds | Renewable Energy Monitoring |
Use Scenario: Overvoltage protection on 48V DC power inputs of remote radio units and base station management cards. IC Role / Device Role / Timing Role: First-line TVS on DC input stage, upstream of DC-DC converters and hot-swap controllers. Use Value: 110V VRWM allows safe operation across full 48V ±10% nominal range while providing 67V headroom to clamp telecom-grade lightning surges (IEC 61000-4-5 2kV/12Ω). | Use Scenario: Surge suppression on voltage sensing lines of solar charge controllers monitoring battery bank voltages up to 96V. IC Role / Device Role / Timing Role: Precision clamping element on analog front-end inputs, selected for tight VBR tolerance to avoid false overvoltage trips. Use Value: 122–135V VBR range ensures activation only during genuine overvoltage events (>110V), minimizing interference with accurate 96V battery state-of-charge measurement. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar unidirectional TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ110A-E3/5A (Vishay) | Identical VRWM (110V), same SMA package, but 178V VC @ 2.3A (1V higher clamping) | Marginally reduced protection level; may require layout review if system has <1V design margin | Acceptable where 1V clamping delta is within system OV threshold tolerance |
| P6SMB110A (ON Semiconductor) | Same VRWM and VC specs, but 600W PPK rating and DO-214AA (SMB) package (larger footprint) | Higher surge capacity but incompatible with SMA-reflow land patterns; requires PCB redesign | Preferred only when higher pulse energy handling is required and board space permits SMB footprint |
Compared with SMAJ110A-13-F, the Vishay alternative offers near-identical protection with negligible clamping difference, while the ON Semiconductor part trades package compatibility for increased surge robustness-making the Diodes device optimal for space-constrained 400W-class designs requiring strict SMA footprint adherence.
Availability
SMAJ110A-13-F is available at Aetrix Electronics and suitable for industrial automation, automotive body electronics, telecom power systems, and renewable energy monitoring requiring stable component supply and RoHS-compliant surge protection.
Supply support for SMAJ110A-13-F 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, manufacturing, and sales operations across Asia, Europe, and North America.
The SMAJ series belongs to Diodes' transient voltage suppressor product line, engineered specifically for high-reliability, surface-mount overvoltage protection in harsh environments including automotive, industrial, and communications infrastructure.
FAQ
What is the maximum operating temperature for SMAJ110A-13-F?
The SMAJ110A-13-F is rated for junction temperatures from –55°C to +150°C, with steady-state power dissipation derated linearly above +25°C ambient. At +75°C lead temperature, its average power rating drops to 1.0W per the datasheet's Fig. 6 derating curve.
Is SMAJ110A-13-F suitable for bidirectional signal line protection?
No - SMAJ110A-13-F is unidirectional, indicated by the absence of "C" in its part number. For bidirectional protection (e.g., RS-485, USB D+/D−), use SMAJ110CA-13-F, which has symmetrical clamping in both directions and no cathode band marking.
Does this TVS diode meet AEC-Q200 qualification?
No - SMAJ110A-13-F is the standard industrial-grade version. The automotive-qualified variant is SMAJ110AQ-13-F, which undergoes AEC-Q200 stress testing and is manufactured in IATF 16949-certified facilities; it is documented separately in Diodes' automotive datasheet DS19005Q.
How does the 400W rating translate to real-world surge immunity?
The 400W rating corresponds to a single 8.3ms half-sine surge at 2.3A peak current (per IEC 61000-4-5). In practice, this enables protection against 2kV/12Ω surges on 48V lines and 4kV/2Ω surges on 24V lines - validated via standardized waveform testing in Diodes' characterization lab per REA-defined pulse shape.
SMAJ110A-13-F Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Package/Case:
- DO-214AC, SMA
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 110V
- Voltage - Breakdown (Min):
- 122V
- Voltage - Clamping (Max) @ Ipp:
- 177V
- Current - Peak Pulse (10/1000µs):
- 2.3A
- 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
SMAJ110A-13-F FAQ
1.How can I place an order for SMAJ110A-13-F through Aetrix?
Please submit a Request for Quotation (RFQ) for SMAJ110A-13-F 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 SMAJ110A-13-F reliable?
The price and inventory of SMAJ110A-13-F are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMAJ110A-13-F is usually 5 days.
3.What payment methods are accepted for SMAJ110A-13-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMAJ110A-13-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMAJ110A-13-F?
SMAJ110A-13-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMAJ110A-13-F 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 SMAJ110A-13-F?
For technical support, including SMAJ110A-13-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMAJ110A-13-F requirements.
6.How does Aetrix verify that SMAJ110A-13-F is sourced from the original manufacturer or authorized distributors?
All SMAJ110A-13-F 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 SMAJ110A-13-F meets industry standards.
7.What is the process for return or replacement of SMAJ110A-13-F?
All SMAJ110A-13-F units undergo pre-shipment inspection (PSI). If there is an issue with SMAJ110A-13-F, 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 SMAJ110A-13-F part is unused and in its original packaging.
Return procedure for SMAJ110A-13-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMAJ110A-13-F Tags
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ESD9B5.0ST5G
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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