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Diodes Incorporated SMAJ110AQ-13-F
- Part No.:
- SMAJ110AQ-13-F
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMAJ110AQ-13-F.pdf
- Description:
- TRANSIENT VOLTAGE SUPPRESSOR PP
- Quantity:
- Payment:
- Shipping:
Inventory:7,978
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Product details
Overview
SMAJ110AQ-13-F from Diodes Incorporated is a unidirectional 400W automotive transient voltage suppressor (TVS) diode with 110V reverse standoff voltage, 122–135V breakdown range at 1mA, and 177V max clamping voltage at 2.3A peak pulse current. It protects CAN, LIN, and power-line circuits in engine control units and body electronics against ISO7637-2 Pulse 1/2a/3a/3b transients and ISO10605 ESD events.
For engineers reviewing the SMAJ110AQ-13-F datasheet, SMAJ110AQ-13-F pinout, SMAJ110AQ-13-F application, or SMAJ110AQ-13-F equivalent, this device is selected for AEC-Q101-compliant 12V/24V automotive subsystems requiring precise clamping, low leakage (<0.5µA @ 110V), and IATF 16949-manufactured reliability under -55°C to +175°C operating conditions.
Technical Context
This TVS diode operates as a unidirectional clamping device in series with power or signal lines, activating only when reverse voltage exceeds VRWM (110V) and clamping to ≤177V within nanoseconds. Its glass-passivated junction ensures stable VBR tolerance (±5%) and low thermal resistance for high-energy surge absorption.
Designed for automotive-grade robustness, it meets ISO7637-2 Pulse 1 (-100V), Pulse 2a (+50V), Pulse 3a (-150V), and Pulse 3b (+100V) waveforms, with full compliance to ISO10605 (30kV air/contact discharge) and AEC-Q101 stress testing including HTGB, HTRB, and TCT.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 400W - sustains 10×1000µs transient surges without failure |
| Reverse Standoff Voltage | 110V - blocks normal system voltage while remaining inactive below threshold |
| Breakdown Voltage | 122–135V @ 1mA - tight VBR window enables predictable turn-on timing |
| Clamping Voltage | 177V @ 2.3A - limits downstream IC voltage stress during ISO7637-2 Pulse 3a |
| Leakage Current | <0.5µA @ 110V - negligible standby power loss in always-on vehicle modules |
| Operating Temperature | -55°C to +175°C - supports under-hood placement near engines or transmissions |
| AEC-Q101 Qualified | Yes - validated for automotive use with PPAP documentation support |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, molded plastic UL 94V-0 housing, cathode band polarity indicator, 0.064g weight. Moisture sensitivity level 1 per J-STD-020.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Anode of internal PN junction | Connected to protected line; conducts during overvoltage to shunt current to ground |
| Anode | Cathode of internal PN junction | Typically tied to system ground or low-impedance return path for clamping reference |
Key Features
| Feature | Design Value |
|---|---|
| 400W peak pulse rating | Handles ISO7637-2 Pulse 3a (-150V, 50Ω source) without degradation |
| Glass-passivated die | Ensures long-term VBR stability and reduced parameter drift over temperature cycling |
| Lead-free, RoHS 3 & "Green" compliant | Contains <900ppm Br, <900ppm Cl, <1000ppm Sb - meets global automotive environmental mandates |
| IATF 16949 manufacturing | Guarantees traceable lot control, change management, and PPAP-ready documentation |
Applications
| Engine Control Unit (ECU) Power Input | CAN FD Transceiver Protection |
|---|---|
Use Scenario: 12V battery feed to microcontroller power supply in gasoline/diesel ECUs exposed to load dump and alternator ripple. IC Role / Device Role: Unidirectional TVS placed between input rail and ground to clamp negative transients (Pulse 1) and positive spikes (Pulse 2a). Use Value: Limits voltage to ≤177V during -100V ISO7637-2 Pulse 1, protecting LDOs and MCU VDD pins without crowbar action. | Use Scenario: CAN_H/CAN_L lines in ADAS domain controllers subject to ESD and coupled noise from nearby high-current actuators. IC Role / Device Role: Paired SMAJ110AQ-13-F devices (one per line) referenced to chassis ground to suppress common-mode surges. Use Value: Clamps 30kV ISO10605 contact discharge to <177V within <1ns, preserving CAN FD bit timing integrity up to 5Mbps. |
| Body Control Module (BCM) LIN Bus | Electric Power Steering (EPS) Motor Driver Supply |
Use Scenario: LIN bus termination in door modules where wiring harnesses act as antennas for RF-coupled transients. IC Role / Device Role: Single SMAJ110AQ-13-F on LIN bus line referenced to local ground to absorb induced surges. Use Value: Maintains LIN physical layer operation at 19.2kbps by limiting clamped voltage to safe levels for transceiver I/O cells. | Use Scenario: 24V supply rail feeding H-bridge gate drivers in EPS systems experiencing PWM-induced switching noise and load dump. IC Role / Device Role: Primary TVS on main 24V input before DC-DC converter, sized for high-energy Pulse 3b (+100V) events. Use Value: Absorbs 400W peak energy without thermal runaway, enabling continuous operation after repeated transients. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar unidirectional automotive TVS applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ110A-Q | Same electrical specs; differs only in packaging notation (no "-13-F" tape/reel suffix) | Identical functional performance; used in legacy BOMs with different ordering syntax | Select when sourcing from older inventory or distributor stock with alternate marking |
| SMCJ110A-Q | Same VRWM/VBR/VC but in larger SMC (DO-214AB) package; 1500W rating vs. 400W | Higher surge capacity suits heavy-duty commercial vehicle systems with higher energy threats | Choose only if board layout allows SMC footprint and system requires >400W margin |
Compared with SMAJ110AQ-13-F, SMAJ110A-Q offers identical protection in legacy packaging syntax, while SMCJ110A-Q trades compact SMA size for 3.75× higher surge capability-making the SMAJ variant optimal for space-constrained, cost-sensitive automotive modules needing certified 400W clamping.
Availability
SMAJ110AQ-13-F is available at Aetrix Electronics and suitable for engine control units, CAN FD networks, body control modules, and electric power steering systems requiring stable component supply across automotive production lifecycles.
Supply support for SMAJ110AQ-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 semiconductor manufacturer specializing in discrete, analog, and mixed-signal solutions, with design centers in Asia, Europe, and the U.S., and manufacturing in IATF 16949-certified facilities.
The SMAJ series is part of Diodes' AEC-Q101-qualified automotive protection portfolio, engineered specifically for ISO7637-2/ISO10605 compliance in 12V/24V vehicle subsystems where space, reliability, and regulatory traceability are critical.
FAQ
What is the maximum clamping voltage of SMAJ110AQ-13-F at its rated peak pulse current?
The maximum clamping voltage is 177V at 2.3A peak pulse current (IPP), measured using the standardized 10×1000µs waveform per Figure 4 in DS40739 Rev. 17-2. This value ensures downstream components see no more than 177V during worst-case ISO7637-2 Pulse 3a events, preserving voltage margins for 12V/24V-rated ICs.
Is SMAJ110AQ-13-F suitable for bi-directional transient suppression?
No - SMAJ110AQ-13-F is unidirectional, indicated by the absence of "C" in its part number. Bi-directional variants (e.g., SMAJ110CAQ-13-F) exist but have doubled leakage current for VRWM ≤10V and lack cathode band marking. For symmetric AC-line or differential bus protection, a C-suffix part must be selected.
Does SMAJ110AQ-13-F require derating at elevated ambient temperatures?
Yes - its 400W peak pulse power is specified at TA = +25°C and must be linearly derated above that temperature per Figure 1 in DS40739. At +85°C ambient, usable peak power drops to ~280W; at +125°C, it falls to ~160W. Designers must verify clamping performance under worst-case thermal conditions using the published derating curve.
How is the "AQ" suffix in SMAJ110AQ-13-F interpreted per Diodes' naming convention?
The "AQ" denotes AEC-Q101 qualification and PPAP capability, confirming full automotive-grade stress testing (HTGB, HTRB, TCT, etc.) and manufacturing in IATF 16949-certified facilities. It is not a package or process code - "-13-F" separately indicates 5,000-piece tape-and-reel packaging with 8mm carrier tape and embossed plastic reel.
SMAJ110AQ-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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SMA
SMAJ110AQ-13-F FAQ
1.How can I place an order for SMAJ110AQ-13-F through Aetrix?
Please submit a Request for Quotation (RFQ) for SMAJ110AQ-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 SMAJ110AQ-13-F reliable?
The price and inventory of SMAJ110AQ-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 SMAJ110AQ-13-F is usually 5 days.
3.What payment methods are accepted for SMAJ110AQ-13-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMAJ110AQ-13-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMAJ110AQ-13-F?
SMAJ110AQ-13-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMAJ110AQ-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 SMAJ110AQ-13-F?
For technical support, including SMAJ110AQ-13-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMAJ110AQ-13-F requirements.
6.How does Aetrix verify that SMAJ110AQ-13-F is sourced from the original manufacturer or authorized distributors?
All SMAJ110AQ-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 SMAJ110AQ-13-F meets industry standards.
7.What is the process for return or replacement of SMAJ110AQ-13-F?
All SMAJ110AQ-13-F units undergo pre-shipment inspection (PSI). If there is an issue with SMAJ110AQ-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 SMAJ110AQ-13-F part is unused and in its original packaging.
Return procedure for SMAJ110AQ-13-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMAJ110AQ-13-F Tags
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Diodes Incorporated
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