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Diodes Incorporated DFLT14A-7
- Part No.:
- DFLT14A-7
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- POWERDI®123
- Datasheet:
-
DFLT14A-7.pdf
- Description:
- TVS DIODE 14VWM 23.2VC PWRDI 123
- Quantity:
- Payment:
- Shipping:
Inventory:6,898
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Product details
Overview
DFLT14A-7 from Diodes Incorporated is a unidirectional transient voltage suppressor (TVS) diode in PowerDI123 package, designed for overvoltage protection of DC power rails and signal lines. It features 14 V reverse standoff voltage, 23.2 V max clamping voltage at 9.7 A peak pulse current, and 225 W peak pulse power dissipation (10/1000 µs waveform), suitable for automotive body electronics and industrial I/O interface protection.
For engineers reviewing the DFLT14A-7 datasheet, DFLT14A-7 pinout, DFLT14A-7 application, or DFLT14A-7 equivalent, key selection criteria include clamping voltage margin relative to protected IC VDD, peak pulse current capability under surge standards (IEC 61000-4-5), thermal resistance (RθJS = 6 °C/W), and AEC-Q101 qualification status for automotive deployment.
Technical Context
This TVS operates in avalanche breakdown mode during transients, with a tightly controlled breakdown voltage range of 15.6–17.2 V at 1.0 mA test current and low leakage (<1.0 µA at 14 V). Its unidirectional configuration provides asymmetric clamping-low forward voltage (3.5 V @ 12 A) enables use as a series protection element in low-voltage DC paths.
The device leverages silicon avalanche junction design optimized for fast response (<1 ns), low dynamic impedance, and stable clamping performance across -65°C to +150°C operating temperature. Its PowerDI123 package delivers high thermal conductivity via direct cathode tab soldering to PCB copper, enabling reliable power dissipation under repetitive surge conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reverse Standoff Voltage (VRWM) | 14 V - Maximum continuous DC voltage before significant leakage begins; sets upper limit for protected circuit operating voltage. |
| Breakdown Voltage (VBR) | 15.6–17.2 V @ 1.0 mA - Confirmed avalanche onset range; ensures predictable triggering above normal rail voltage. |
| Max Clamping Voltage (VC) | 23.2 V @ 9.7 A - Peak voltage seen by downstream circuit during 10/1000 µs surge; defines protection level margin vs. IC absolute maximum rating. |
| Peak Pulse Power (PPK) | 225 W (10/1000 µs) - Sustains standardized lightning-surge energy without failure; derates linearly above +25°C ambient. |
| Thermal Resistance (RθJS) | 6 °C/W - Junction-to-solder-point thermal path; enables efficient heat transfer to PCB copper pad for repeated surge handling. |
| Operating Temperature | -65°C to +150°C - Validated performance across automotive under-hood and industrial extended-temperature environments. |
Pinout & Package
Package: PowerDI123 - surface-mount, single-ended, cathode-banded plastic package with exposed cathode tab for thermal and electrical connection. Dimensions: 1.78 mm × 3.70 mm × 1.00 mm (L×W×H); weight ≈ 0.01 g; RoHS-compliant matte tin finish over copper leadframe.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Input/Protected Line Terminal | Connected to line being protected (e.g., 12 V supply rail); carries surge current into device during overvoltage event. |
| Cathode | Reference/Ground Terminal | Connected to system ground or low-impedance return path; forms clamping node; tab provides primary thermal conduction path to PCB. |
Key Features
| Feature | Design Value |
|---|---|
| 225 W peak pulse power (10/1000 µs) | Supports IEC 61000-4-5 Level 3 (1 kV/2 Ω) surge immunity on 12 V systems without derating. |
| Low clamping ratio (VC/VRWM = 1.66) | Minimizes overvoltage stress on downstream 16 V-rated components while maintaining robust margin. |
| PowerDI123 package with RθJS = 6 °C/W | Enables >2× higher sustained surge duty cycle vs. SMA packages due to superior thermal coupling to PCB. |
| AEC-Q101 qualified variant available (DFLT14AQ) | Validated for automotive applications requiring PPAP, change control, and IATF 16949 manufacturing. |
Applications
| Automotive Body Control Module (BCM) | Industrial PLC Digital Input |
|---|---|
Use Scenario: Protects 12 V power input and LIN bus lines in BCM against load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Unidirectional TVS clamps transients to <23.2 V within nanoseconds, preserving MCU and transceiver functionality. Use Value: Prevents latch-up or permanent damage to 16 V-tolerant CAN/LIN transceivers during 12 V rail surges up to 100 V. |
Use Scenario: Shields 24 V digital input channels in programmable logic controllers from field-wiring induced surges. IC Role / Device Role / Timing Role: Fast-response clamping element placed upstream of optocoupler input, limiting voltage to safe levels before isolation barrier. Use Value: Maintains input logic state integrity during 2 kV EFT bursts by holding voltage below optocoupler CTR degradation threshold. |
| USB-C Power Delivery Port | Smart Meter RS-485 Interface |
Use Scenario: Guards VBUS line in USB-C PD sink designs against hot-plug overshoot and adapter fault transients. IC Role / Device Role / Timing Role: Primary overvoltage clamp on 5–20 V programmable power rail, coordinated with internal OVP circuitry. Use Value: Limits VBUS excursion to ≤23.2 V during 10/1000 µs surges, preventing damage to PD controller and buck converter MOSFETs. |
Use Scenario: Protects RS-485 transceiver data lines in utility smart meters exposed to lightning-induced common-mode surges on long cable runs. IC Role / Device Role / Timing Role: Differential-line TVS pair (one per line) referenced to local ground, suppressing asymmetrical transients. Use Value: Ensures <100 ns response to 4 kV surges, preserving data integrity and avoiding transceiver reset during meter communication cycles. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ14A (onsemi) | Same 14 V VRWM, but SMA package (RθJA = 150 °C/W vs. DFLT14A-7's 6 °C/W); 400 W PPK but larger footprint. | Limited thermal performance in high-density layouts; unsuitable for high-duty-cycle surge environments. | Select when legacy SMA footprint compatibility is required and board space allows larger package. |
| DFLT14AQ (Diodes) | Identical electrical specs; AEC-Q101 qualified, PPAP-capable, manufactured in IATF 16949 facility. | Mandatory for automotive production; requires formal change control and traceability documentation. | Choose for Tier 1 automotive programs where qualification and supply chain compliance are non-negotiable. |
Compared with SMAJ14A, DFLT14A-7 offers superior thermal management in compact layouts; compared with DFLT14AQ, it lacks automotive qualification but supports faster prototyping and cost-sensitive industrial designs.
Availability
DFLT14A-7 is available at Aetrix Electronics and suitable for automotive body electronics, industrial PLC I/O protection, and USB-C power delivery systems requiring stable component supply and consistent surge performance across production volumes.
Supply support for DFLT14A-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, specializing in high-reliability protection, power management, and signal integrity solutions for automotive, industrial, and consumer markets.
DFLT14A-7 belongs to the DFLTxxxA series of surface-mount TVS diodes engineered for high-energy transient suppression in space-constrained, thermally demanding applications-particularly where low clamping voltage and rapid thermal dissipation are critical.
FAQ
What is the maximum allowable DC voltage applied to DFLT14A-7 in normal operation?
The maximum continuous DC voltage is the reverse standoff voltage VRWM = 14 V. Operating above this level increases leakage current exponentially and risks premature breakdown. For 12 V automotive systems, this provides ~16% margin; for 5 V logic rails, a lower-voltage variant (e.g., DFLT6V0A) must be selected.
Does DFLT14A-7 meet AEC-Q101 requirements for automotive use?
No-DFLT14A-7 is the commercial-grade version. The automotive-qualified variant is DFLT14AQ, which undergoes full AEC-Q101 stress testing, is manufactured in IATF 16949-certified facilities, and supports PPAP documentation. DFLT14A-7 may be used in automotive prototypes but not in production vehicles without qualification.
How does the PowerDI123 package improve surge handling versus SMA or SOD-123?
PowerDI123's exposed cathode tab reduces junction-to-solder-point thermal resistance to 6 °C/W-over 20× better than SMA (RθJA ≈ 150 °C/W). This allows sustained energy dissipation without thermal runaway during repetitive surges, making it ideal for high-reliability industrial and automotive applications where thermal cycling is frequent.
Can DFLT14A-7 be used for bidirectional transient protection?
No-it is a unidirectional TVS diode, functionally equivalent to a Zener diode with cathode-anode polarity. For bidirectional (AC or dual-rail) protection, a symmetric device like DMLF14A (dual unidirectional) or SMBJ14CA (bidirectional TVS) is required. Using DFLT14A-7 in reverse-biased AC configurations will cause forward conduction and failure.
DFLT14A-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):
- 14V
- Voltage - Breakdown (Min):
- 15.6V
- Voltage - Clamping (Max) @ Ipp:
- 23.2V
- Current - Peak Pulse (10/1000µs):
- 9.7A
- Power - Peak Pulse:
- 225W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- PowerDI™ 123
DFLT14A-7 FAQ
1.How can I place an order for DFLT14A-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for DFLT14A-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 DFLT14A-7 reliable?
The price and inventory of DFLT14A-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DFLT14A-7 is usually 5 days.
3.What payment methods are accepted for DFLT14A-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DFLT14A-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DFLT14A-7?
DFLT14A-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DFLT14A-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 DFLT14A-7?
For technical support, including DFLT14A-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DFLT14A-7 requirements.
6.How does Aetrix verify that DFLT14A-7 is sourced from the original manufacturer or authorized distributors?
All DFLT14A-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 DFLT14A-7 meets industry standards.
7.What is the process for return or replacement of DFLT14A-7?
All DFLT14A-7 units undergo pre-shipment inspection (PSI). If there is an issue with DFLT14A-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 DFLT14A-7 part is unused and in its original packaging.
Return procedure for DFLT14A-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
DFLT14A-7 Tags
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ESD9B5.0ST5G
onsemi
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DESD3V3E1BL-7B
Diodes Incorporated
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onsemi
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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ESD5Z5.0T1G
onsemi
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Diodes Incorporated
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D12V0L1B2LP-7B
Diodes Incorporated
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Nexperia USA Inc.
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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