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Diodes Incorporated DFLT16A-7
- Part No.:
- DFLT16A-7
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- POWERDI®123
- Datasheet:
-
DFLT16A-7.pdf
- Description:
- TVS DIODE 16VWM 26VC POWERDI 123
- Quantity:
- Payment:
- Shipping:
Inventory:8,200
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Product details
Overview
DFLT16A-7 from Diodes Incorporated is a unidirectional transient voltage suppressor (TVS) diode in PowerDI123 package, designed for primary overvoltage protection of 16V DC power rails and signal lines. It delivers 225W peak pulse power (10/1000µs), clamps at ≤26.0V under 8.65A peak pulse current, and exhibits ≤1.0µA reverse leakage at 16V standoff, enabling robust ESD and surge immunity in automotive body electronics and industrial I/O interfaces.
For engineers reviewing the DFLT16A-7 datasheet, DFLT16A-7 pinout, DFLT16A-7 application, or DFLT16A-7 equivalent, key selection criteria include clamping voltage margin relative to protected IC VDD, thermal resistance (RθJS = 6°C/W), standoff voltage tolerance (17.8–19.7V breakdown), and PowerDI123 footprint compatibility with high-density PCB layouts.
Technical Context
This TVS operates as a unidirectional avalanche clamp, triggered when reverse voltage exceeds its 16V standoff rating. Its silicon junction design ensures fast response (<1ns) to transients and stable clamping performance across -65°C to +150°C operating range.
It is rated for 50A non-repetitive forward surge (8.3ms half-sine) and dissipates up to 1.0W steady-state power on FR-4 with 1-inch² 2oz copper pad. Thermal resistance from junction to solder point is 6°C/W, enabling effective heat transfer to PCB ground plane.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 225W (10/1000µs waveform); sustains automotive load-dump and ISO 7637-2 pulse 5a without failure |
| Reverse Standoff Voltage | 16V nominal; ensures reliable blocking during normal 12V/16V rail operation without leakage-induced power loss |
| Breakdown Voltage | 17.8–19.7V @ 1.0mA; guarantees activation before downstream IC absolute maximum ratings are exceeded |
| Clamping Voltage | ≤26.0V @ 8.65A IPP; limits stress on protected 3.3V/5V logic interfaces when used with series impedance |
| Thermal Resistance | RθJS = 6°C/W; enables direct thermal path to PCB cathode pad, critical for sustained surge duty cycles |
| Capacitance | ~35pF @ 0V (typical); low enough for CAN, LIN, and UART data lines without signal integrity degradation |
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 | Transient current entry point during positive surge events | Connected to protected line (e.g., VBAT, CAN_H); forms low-impedance path to ground via cathode |
| Cathode | Reference terminal and primary heat sink interface | Must be routed to large copper pour or ground plane; carries full surge current and conducts heat to PCB |
Key Features
| Feature | Design Value |
|---|---|
| 225W peak pulse rating | Meets ISO 7637-2 Pulse 5a (load dump) requirements for 12V automotive systems without derating |
| PowerDI123 package | 0.98mm height and 3.70mm width enable placement adjacent to connectors or ECUs in space-constrained modules |
| RoHS 3 & "Green" compliant | Contains <900ppm Br, <900ppm Cl, <1000ppm Sb; satisfies automotive Tier 1 material declarations and ELV compliance |
| Low clamping ratio (VC/VRWM ≈ 1.62) | Minimizes voltage overshoot margin needed between protected IC's VDD max and TVS clamping level |
Applications
| Automotive Body Control Module (BCM) | Industrial PLC Digital Input |
|---|---|
Use Scenario: Protects microcontroller GPIO and LIN transceiver pins against battery reverse connection and jump-start surges. IC Role / Device Role: Primary overvoltage clamp on 12V-supplied LIN bus lines and wake-up inputs. Use Value: Clamps to ≤26.0V while limiting peak current to 8.65A, preserving transceiver functionality per SAE J2604 Class A. |
Use Scenario: Shields 24V digital input circuitry from inductive kickback caused by solenoid valve switching. IC Role / Device Role: Front-end transient suppressor on optocoupler input side of isolated DI channel. Use Value: Absorbs 225W pulses without degradation, maintaining >100k-cycle reliability under repeated 24V coil de-energization events. |
| Automotive Infotainment USB Port | Smart Meter RS-485 Interface |
Use Scenario: Guards USB VBUS and D+/D− lines against ESD and hot-plug transients in center console applications. IC Role / Device Role: Secondary-level TVS after common-mode choke, targeting ±15kV contact ESD per IEC 61000-4-2. Use Value: 35pF capacitance avoids USB 2.0 signal rise-time degradation; 26.0V clamping prevents PHY latch-up. |
Use Scenario: Secures RS-485 transceiver (e.g., MAX1487) against lightning-induced surges on outdoor utility meter communication lines. IC Role / Device Role: Line-side TVS on A/B differential pair, placed before TVS array and common-mode choke. Use Value: 225W rating handles 10/1000µs surges per IEC 61000-4-5 Level 3; RθJS = 6°C/W supports continuous outdoor thermal cycling. |
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 16V standoff, but 400W peak power (400W @ 10/1000µs), SMA package (larger footprint, higher RθJA) | Preferred where higher surge margin is required and board space allows SMA footprint | Select SMAJ16A if system must survive multiple ISO 7637-2 Pulse 5a events without parameter shift |
| DFLT16AQ-7 | AEC-Q101 qualified version; identical electrical specs, same PowerDI123 package, PPAP-capable manufacturing | Mandatory for production automotive ECUs requiring change-controlled qualification documentation | Choose DFLT16AQ-7 for Tier 1 automotive programs requiring AEC-Q101 test reports and IATF 16949 traceability |
Compared with SMAJ16A, DFLT16A-7 offers superior thermal performance (RθJS = 6°C/W vs. ~35°C/W) in a 30% smaller footprint, while DFLT16AQ-7 adds automotive qualification without compromising electrical behavior-making it ideal for cost-sensitive, space-constrained, or production-grade designs.
Availability
DFLT16A-7 is available at Aetrix Electronics and suitable for automotive body electronics, industrial PLC I/O modules, smart meter communications, and consumer infotainment interfaces requiring stable component supply and consistent surge immunity performance.
Supply support for DFLT16A-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 semiconductor company specializing in discrete, analog, and mixed-signal solutions, with design centers across Asia, Europe, and the US, serving automotive, industrial, and computing markets.
DFLT16A-7 belongs to Diodes' PowerDI TVS portfolio, engineered specifically for high-reliability, surface-mount transient suppression in harsh environments-including under-hood automotive and factory-floor industrial applications.
FAQ
What is the maximum clamping voltage of DFLT16A-7 at its rated peak pulse current?
The maximum clamping voltage (VC) is 26.0V at IPP = 8.65A (10/1000µs waveform), measured per JEDEC standards. This value is guaranteed across -65°C to +150°C and defines the upper voltage limit imposed on protected circuitry during surge events.
Can DFLT16A-7 be used in bidirectional configurations?
No-DFLT16A-7 is a unidirectional TVS diode, optimized for clamping positive transients on grounded-cathode configurations. For bidirectional protection (e.g., AC lines or differential buses), use a dedicated bidirectional part such as DMLF16A or SMBJ16CA.
What is the recommended PCB layout for optimal thermal performance?
Use a minimum 1-inch² (25 mm²) 2oz copper pad connected directly to the cathode terminal, with thermal vias (≥4×0.3mm diameter) to inner ground planes. Avoid narrow traces between cathode and pad; maintain ≥0.5mm clearance from adjacent components to prevent solder wicking.
Does DFLT16A-7 meet AEC-Q101 qualification?
Standard DFLT16A-7 is not AEC-Q101 qualified. The automotive-grade variant is DFLT16AQ-7, which undergoes full AEC-Q101 stress testing, is manufactured in IATF 16949-certified facilities, and supports PPAP documentation for automotive production programs.
DFLT16A-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:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- PowerDI™ 123
DFLT16A-7 FAQ
1.How can I place an order for DFLT16A-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for DFLT16A-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 DFLT16A-7 reliable?
The price and inventory of DFLT16A-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DFLT16A-7 is usually 5 days.
3.What payment methods are accepted for DFLT16A-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DFLT16A-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DFLT16A-7?
DFLT16A-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DFLT16A-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 DFLT16A-7?
For technical support, including DFLT16A-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DFLT16A-7 requirements.
6.How does Aetrix verify that DFLT16A-7 is sourced from the original manufacturer or authorized distributors?
All DFLT16A-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 DFLT16A-7 meets industry standards.
7.What is the process for return or replacement of DFLT16A-7?
All DFLT16A-7 units undergo pre-shipment inspection (PSI). If there is an issue with DFLT16A-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 DFLT16A-7 part is unused and in its original packaging.
Return procedure for DFLT16A-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
DFLT16A-7 Tags
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Diodes Incorporated
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