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Diodes Incorporated DFLT16AQ-7
- Part No.:
- DFLT16AQ-7
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- POWERDI®123
- Datasheet:
-
DFLT16AQ-7.pdf
- Description:
- TRANSIENT VOLTAGE SUPPRESSOR PDI
- Quantity:
- Payment:
- Shipping:
Inventory:7,808
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Product details
Overview
DFLT16AQ-7 from Diodes Incorporated is an AEC-Q101 qualified automotive-grade transient voltage suppressor (TVS) diode in PowerDI®123 package, featuring 16 V reverse standoff voltage, 26.0 V max clamping voltage at 8.65 A peak pulse current, and 225 W peak pulse power (10/1000 µs). It provides robust ESD and surge protection for 12 V automotive power rails and signal lines.
For engineers reviewing the DFLT16AQ-7 datasheet, DFLT16AQ-7 pinout, DFLT16AQ-7 application, or DFLT16AQ-7 equivalent, key selection criteria include clamping performance under ISO 7637-2 Pulse 1/2a/5a, thermal resistance (RθJS = 6 °C/W), AEC-Q101 qualification status, and compatibility with automated SMT assembly on FR-4 PCBs with 1-inch² 2 oz copper pads.
Technical Context
This unidirectional TVS diode operates in avalanche breakdown mode to clamp transient overvoltages above its reverse standoff voltage (VRWM = 16 V) while maintaining low leakage (<1.0 µA at VRWM). Its 26.0 V clamping voltage at IPP = 8.65 A ensures safe voltage limiting for downstream CAN, LIN, or sensor interface ICs during load dump or inductive switching events.
The device uses a planar junction structure in a thermally optimized PowerDI®123 package with cathode band marking, enabling efficient heat transfer from junction to solder joint (RθJS = 6 °C/W) and stable operation from –55 °C to +150 °C-critical for under-hood automotive environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reverse Standoff Voltage (VRWM) | 16 V - Maximum continuous DC or RMS voltage before significant leakage begins; sets operating margin for 12 V automotive systems. |
| Breakdown Voltage (VBR min/max) | 17.8 V / 19.7 V @ IT = 1.0 mA - Confirmed avalanche onset range; ensures reliable triggering without premature conduction. |
| Max Clamping Voltage (VC) | 26.0 V @ IPP = 8.65 A - Peak voltage seen by protected circuit during 10/1000 µs surge; meets ISO 7637-2 Pulse 5a limits. |
| Peak Pulse Power (PPK) | 225 W (10/1000 µs) - Sustains high-energy transients common in automotive load dump scenarios. |
| Thermal Resistance (RθJS) | 6 °C/W - Low junction-to-solder-point resistance enables effective heat dissipation into PCB copper, supporting sustained reliability. |
| Operating Temperature | –55 °C to +150 °C - Validated for engine bay and transmission control unit mounting locations per AEC-Q101 stress testing. |
Pinout & Package
Package: PowerDI®123 - surface-mount, single-diode configuration with molded green plastic case (UL 94V-0), matte tin–annealed copper leadframe, and cathode band marking. Dimensions: 1.78 mm × 3.70 mm × 0.98 mm (L × W × H); weight ≈ 0.01 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point during forward conduction; connected to protected line (e.g., CAN_H) | Low VF (3.5 V @ 12 A) minimizes forward drop during fault conditions where bidirectional conduction may occur. |
| Cathode | Current exit point during reverse-biased clamping; tied to ground or lower-potential rail | Cathode band marking identifies polarity; tab connection provides primary thermal path to PCB ground plane. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive use including temperature cycling, humidity bias, and mechanical shock tests-required for Tier 1 ECUs. |
| Lead-free & halogen-free | RoHS 3 compliant (2015/863/EU); <900 ppm Br, <900 ppm Cl, <1000 ppm Sb-meets OEM environmental mandates. |
| Low RθJS (6 °C/W) | Enables higher surge duty cycles without thermal runaway when mounted on standard 2 oz copper pads. |
| Moisture Sensitivity Level 1 | No floor life limitation or bake requirement before reflow-reduces manufacturing overhead and handling risk. |
Applications
| Automotive Body Control Module (BCM) | Automotive Infotainment Power Input |
|---|---|
Use Scenario: Protecting 12 V supply input of BCM against load dump surges up to 35 V and ISO 7637-2 Pulse 5a. IC Role / Device Role / Timing Role: Unidirectional TVS clamping element placed between battery rail and DC-DC converter input. Use Value: Limits transient voltage to ≤26.0 V, preventing damage to buck controller ICs rated for 36 V absolute maximum input. | Use Scenario: Safeguarding USB-C or 12 V auxiliary power inputs in head units exposed to jump-start transients. IC Role / Device Role / Timing Role: Primary overvoltage clamp upstream of eFuse and LDO regulators. Use Value: Withstands 225 W pulses without degradation, preserving system uptime during roadside battery replacement events. |
| Automotive LIN Bus Transceiver Protection | Engine Control Unit (ECU) Sensor Signal Line |
Use Scenario: Shielding LIN physical layer transceivers from coupled noise and ESD events on 12 V vehicle networks. IC Role / Device Role / Timing Role: Low-capacitance (≈100 pF at 0 V) TVS on LIN bus line, referenced to chassis ground. Use Value: Clamps ESD strikes (IEC 61000-4-2 ±25 kV air) within nanoseconds while adding negligible signal distortion to 20.2 kbps data. | Use Scenario: Protecting analog sensor inputs (e.g., MAP, IAT) from alternator ripple and ignition coil coupling. IC Role / Device Role / Timing Role: Secondary clamping device on 5 V reference or sensor supply line, placed after bulk filtering. Use Value: Maintains VRWM = 16 V margin above nominal 12 V rail, ensuring no false triggering during normal engine cranking dips. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ16A | Same VRWM (16 V), but lower PPK (400 W), larger SMA package (RθJA = 100 °C/W), non-AEC-Q101 | Not qualified for automotive production; suitable only for industrial or consumer prototypes | Select if cost sensitivity outweighs automotive compliance and thermal performance requirements. |
| TPSMF16A | Same VRWM and AEC-Q101 rating, but SOD-123FL package (RθJS = 12 °C/W), slightly higher VC (27.5 V @ 8.5 A) | Lower thermal efficiency requires larger copper area; acceptable for lower-duty-cycle modules | Choose when footprint compatibility with legacy SOD-123 designs is mandatory and peak surge energy is moderate. |
Compared with SMAJ16A and TPSMF16A, DFLT16AQ-7 delivers superior thermal performance (RθJS = 6 °C/W) and automotive-grade reliability in a compact PowerDI®123 footprint-making it optimal for space-constrained, high-reliability engine bay applications where thermal management and qualification are critical.
Availability
DFLT16AQ-7 is available at Aetrix Electronics and suitable for automotive body control modules, infotainment power inputs, LIN bus protection, and engine control unit sensor interfaces requiring stable component supply across extended production lifecycles.
Supply support for DFLT16AQ-7 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, serving automotive, industrial, computing, and consumer markets with a focus on high-reliability, AEC-Q qualified components.
The DFLT series belongs to Diodes' automotive TVS portfolio, engineered specifically for ISO 7637-2 and ISO 16750-2 compliance in harsh-temperature vehicle environments-emphasizing low clamping, fast response, and long-term parametric stability.
FAQ
What is the maximum allowable PCB pad size for optimal thermal performance of DFLT16AQ-7?
The datasheet specifies thermal derating based on a 1-inch square (25.4 mm × 25.4 mm), 2 oz copper pad. Using this layout achieves the published RθJA = 120 °C/W and supports full 225 W pulse rating. Reducing pad area increases junction temperature and requires power derating per Figure 1.
Does DFLT16AQ-7 meet IEC 61000-4-2 ESD immunity requirements?
Yes-DFLT16AQ-7 is characterized for ESD robustness per AEC-Q101, which includes human-body model (HBM) ≥8 kV and machine model (MM) ≥400 V. Its sub-1 ns response time and low clamping voltage ensure effective protection against contact and air-gap ESD events up to ±25 kV per IEC 61000-4-2.
Can DFLT16AQ-7 be used in bidirectional configurations?
No-it is a unidirectional TVS diode, designed for clamping positive transients on grounded systems. For bidirectional protection (e.g., data lines), two DFLT16AQ-7 devices must be connected in series opposition, or a dedicated bidirectional part like DMLF16AQ should be selected.
What is the meaning of the "AQ" suffix in DFLT16AQ-7?
The "AQ" denotes AEC-Q101 qualification and PPAP capability. The "-7" suffix indicates tape-and-reel packaging: 3,000 units per 8 mm wide reel on 7-inch diameter reels-standard for automated SMT placement in automotive manufacturing lines.
DFLT16AQ-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Package/Case:
- POWERDI®123
- 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):
- 8.65A
- Power - Peak Pulse:
- 225W
- 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:
- PowerDI™ 123
DFLT16AQ-7 FAQ
1.How can I place an order for DFLT16AQ-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for DFLT16AQ-7 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 DFLT16AQ-7 reliable?
The price and inventory of DFLT16AQ-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DFLT16AQ-7 is usually 5 days.
3.What payment methods are accepted for DFLT16AQ-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DFLT16AQ-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DFLT16AQ-7?
DFLT16AQ-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DFLT16AQ-7 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 DFLT16AQ-7?
For technical support, including DFLT16AQ-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DFLT16AQ-7 requirements.
6.How does Aetrix verify that DFLT16AQ-7 is sourced from the original manufacturer or authorized distributors?
All DFLT16AQ-7 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 DFLT16AQ-7 meets industry standards.
7.What is the process for return or replacement of DFLT16AQ-7?
All DFLT16AQ-7 units undergo pre-shipment inspection (PSI). If there is an issue with DFLT16AQ-7, 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 DFLT16AQ-7 part is unused and in its original packaging.
Return procedure for DFLT16AQ-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
DFLT16AQ-7 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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