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Diodes Incorporated DFLT13A-7
- Part No.:
- DFLT13A-7
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- POWERDI®123
- Datasheet:
-
DFLT13A-7.pdf
- Description:
- TVS DIODE 13VWM 21.5VC PWRDI 123
- Quantity:
- Payment:
- Shipping:
Inventory:24,384
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Product details
Overview
DFLT13A-7 from Diodes Incorporated is a unidirectional transient voltage suppressor (TVS) diode in PowerDI123 package, designed for primary overvoltage protection of DC power rails and signal lines. It features 13V reverse standoff voltage, 14.4–15.9V breakdown voltage at 1mA test current, 21.5V max clamping voltage at 10.5A peak pulse current, and 225W peak pulse power dissipation (10/1000µs waveform), used in automotive infotainment power input stages.
For engineers reviewing the DFLT13A-7 datasheet, DFLT13A-7 pinout, DFLT13A-7 application, or DFLT13A-7 equivalent, key selection criteria include clamping voltage margin vs. protected IC VMAX, IPP capability under ISO 7637-2 Pulse 1/2a/5a, thermal resistance to PCB copper area, and AEC-Q101 qualification status for automotive deployment.
Technical Context
This TVS operates as a unidirectional avalanche clamp, triggered when reverse voltage exceeds VRWM = 13V and fully clamping at VC = 21.5V under 10.5A 10/1000µs surge. Its low RθJS = 6°C/W enables effective heat transfer from junction to solder point on FR-4 PCBs with 1-inch² 2oz copper pad.
The device exhibits <1.0µA max reverse leakage at VRWM, 3.5V forward voltage at 12A, and total capacitance <70pF at 0V bias (f = 1MHz), making it suitable for moderate-speed data lines and 12V automotive supply rails where ESD and load-dump transients must be suppressed without signal distortion.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reverse Standoff Voltage | 13V - Maximum continuous DC operating voltage before significant leakage begins. |
| Breakdown Voltage Range | 14.4–15.9V @ 1mA - Confirmed avalanche initiation window ensuring reliable turn-on before system damage. |
| Max Clamping Voltage | 21.5V @ 10.5A - Peak voltage seen by protected circuit during worst-case 10/1000µs surge. |
| Peak Pulse Power | 225W (10/1000µs) - Sustains automotive load-dump energy without failure per ISO 7637-2. |
| Thermal Resistance J-to-Solder | 6°C/W - Enables efficient heat extraction into PCB cathode pad, critical for repeated surge duty cycles. |
| Capacitance @ 0V | <70pF @ 1MHz - Low enough to avoid signal integrity degradation on CAN or LIN bus lines. |
Pinout & Package
Package: PowerDI123 - surface-mount, single-cathode-band marking, green molded plastic (UL 94V-0), 0.01g weight, moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Input/Line side connection | Connected to unprotected line (e.g., battery feed); conducts during forward surge or ESD event. |
| Cathode | Clamp output / Ground reference | Connected to system ground or low-impedance return; defines clamping reference and carries full surge current. |
| Cathode Band | Polarity indicator | Visible marking on package top surface identifying cathode terminal for correct PCB layout orientation. |
Key Features
| Feature | Design Value |
|---|---|
| 225W Peak Pulse Power | Meets ISO 7637-2 Pulse 5a (load dump) requirements for 12V automotive systems without derating. |
| AEC-Q101 Qualified Variant Available | DFLT13AQ variant supports automotive production with PPAP documentation and IATF 16949 manufacturing control. |
| Low Clamping Ratio (VC/VBR) | ~1.43 - Tight voltage margin between breakdown and clamping ensures robust protection without overdesign. |
| Halogen & Antimony Free | Complies with JEDEC JS709E and IPC-1752A "Green" standards (<900ppm Br/Cl, <1000ppm Sb). |
Applications
| Automotive Body Control Module (BCM) | Industrial PLC Digital Input Protection |
|---|---|
Use Scenario: Protects 12V power input of BCM microcontroller and CAN transceiver from battery load-dump transients. IC Role / Device Role: Primary unidirectional TVS clamp placed directly at connector entry point before bulk capacitance. Use Value: Limits voltage to ≤21.5V during 10.5A surge, preventing latch-up or oxide rupture in downstream 3.3V/5V logic. |
Use Scenario: Shields 24V digital input channel of PLC I/O module from field-wiring induced surges and ESD. IC Role / Device Role: Front-end transient suppressor on optocoupler input side, rated for IEC 61000-4-5 Level 3 (1kV/2Ω). Use Value: Withstands repeated 225W pulses while maintaining <1µA leakage at 24V nominal, preserving input threshold accuracy. |
| Automotive Infotainment Power Rail | Telecom Power Supply Interface |
Use Scenario: Guards USB-C PD controller and audio codec power supplies against ignition noise and alternator ripple spikes. IC Role / Device Role: Secondary protection stage after fuse and common-mode choke, targeting fast transients (ns–µs). Use Value: 70pF capacitance avoids high-frequency attenuation on 100MHz clock lines sharing same PCB layer. |
Use Scenario: Secures -48V telecom power interface against lightning-induced surges on central office equipment. IC Role / Device Role: Unidirectional clamp on negative rail, selected for symmetric clamping performance with complementary positive-rail TVS. Use Value: 6°C/W RθJS allows direct thermal coupling to heatsinked ground plane, sustaining >1000 surge events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar unidirectional TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ13A (Bourns) | Same 13V VRWM, but 400W PPK, larger SMA package (RθJA = 150°C/W), higher VC = 21.5V @ 13.7A. | Higher surge rating suits industrial 400V line surges; less suitable for space-constrained automotive modules. | Select when higher single-pulse energy handling is required and board space permits SMA footprint. |
| 1.5SMC13A (ON Semiconductor) | Same 13V VRWM, 1500W PPK, SMC package, VC = 21.5V @ 70A, RθJA = 125°C/W. | Designed for mains-level AC/DC front-end protection; excessive rating for 12V DC rail use. | Choose only if legacy SMC footprint compatibility is mandatory and thermal design accommodates lower power density. |
Compared with SMAJ13A and 1.5SMC13A, DFLT13A-7 offers optimal balance of compact PowerDI123 size, 225W rating matched to automotive load-dump profiles, and superior thermal performance (RθJS = 6°C/W), enabling higher reliability in thermally constrained modules.
Availability
DFLT13A-7 is available at Aetrix Electronics and suitable for automotive body electronics, industrial programmable logic controllers, telecom power interfaces, and consumer infotainment systems requiring stable component supply across multi-year production cycles.
Supply support for DFLT13A-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, headquartered in Plano, Texas, with design, manufacturing, and sales operations across Asia, Europe, and North America.
DFLT13A-7 belongs to the DFLTxxxA series of unidirectional TVS diodes engineered specifically for robust, space-efficient overvoltage protection in automotive and industrial environments where AEC-Q101 compliance and high surge immunity are mandatory.
FAQ
What is the maximum operating temperature range for DFLT13A-7?
DFLT13A-7 operates across –65°C to +150°C, verified per datasheet DS30581 Rev. 12-2. This range supports under-hood automotive placement and industrial environments with wide ambient swings. The device maintains specified clamping performance throughout this range, with pulse derating applied above +25°C per Figure 1.
Is DFLT13A-7 qualified to AEC-Q101?
No - DFLT13A-7 is the commercial-grade version. The AEC-Q101-qualified variant is DFLT13AQ, which undergoes additional stress testing (HTGB, TCT, UHAST), is manufactured in IATF 16949-certified facilities, and supports PPAP documentation. DFLT13A-7 is not approved for automotive safety-critical applications without validation.
How does the PowerDI123 package improve thermal performance over SMA?
PowerDI123 achieves RθJS = 6°C/W versus ~150°C/W for SMA packages due to its exposed cathode tab directly soldered to large PCB copper areas. This reduces junction-to-board thermal resistance by >95%, allowing sustained surge handling without localized overheating or bond-wire failure during repetitive transients.
Can DFLT13A-7 be used for bidirectional protection?
No - DFLT13A-7 is unidirectional only. It clamps in reverse bias above VRWM and conducts forward like a standard diode below ~3.5V. For bidirectional protection (e.g., data lines), a symmetrical TVS such as DFLS13A or SMAJ13CA must be used instead.
DFLT13A-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):
- 13V
- Voltage - Breakdown (Min):
- 14.4V
- Voltage - Clamping (Max) @ Ipp:
- 21.5V
- Current - Peak Pulse (10/1000µs):
- 10.5A
- 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
DFLT13A-7 FAQ
1.How can I place an order for DFLT13A-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for DFLT13A-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 DFLT13A-7 reliable?
The price and inventory of DFLT13A-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DFLT13A-7 is usually 5 days.
3.What payment methods are accepted for DFLT13A-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DFLT13A-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DFLT13A-7?
DFLT13A-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DFLT13A-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 DFLT13A-7?
For technical support, including DFLT13A-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DFLT13A-7 requirements.
6.How does Aetrix verify that DFLT13A-7 is sourced from the original manufacturer or authorized distributors?
All DFLT13A-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 DFLT13A-7 meets industry standards.
7.What is the process for return or replacement of DFLT13A-7?
All DFLT13A-7 units undergo pre-shipment inspection (PSI). If there is an issue with DFLT13A-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 DFLT13A-7 part is unused and in its original packaging.
Return procedure for DFLT13A-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
DFLT13A-7 Tags
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ESD9B5.0ST5G
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Diodes Incorporated
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