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Diodes Incorporated DFLS1150Q-7
- Part No.:
- DFLS1150Q-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Diodes
- Package:
- POWERDI®123
- Datasheet:
-
DFLS1150Q-7.pdf
- Description:
- DIODE SCHOTTKY 150V 1A PWRDI123
- Quantity:
- Payment:
- Shipping:
Inventory:2,874
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Product details
Overview
DFLS1150Q from Diodes Incorporated is a 150 V, 1.0 A high-voltage Schottky barrier rectifier in PowerDI123 package, optimized for low forward voltage (0.82 V @ 1.0 A) and low leakage (2 µA @ 150 V), with AEC-Q101 qualification for automotive-grade reliability in DC-DC converters and reverse polarity protection circuits.
For engineers reviewing the DFLS1150Q datasheet, DFLS1150Q pinout, DFLS1150Q application, or DFLS1150Q equivalent, this part supports high-efficiency power conversion in space-constrained automotive and industrial SMPS designs where surge robustness (50 A IFSM), thermal resistance (7 °C/W RθJS), and halogen-free "Green" compliance are critical selection criteria.
Technical Context
This Schottky rectifier uses guard ring die construction to suppress transient-induced avalanche failure and patented interlocking clip design to sustain 50 A non-repetitive surge current under 8.3 ms half-sine conditions. Its 28 pF junction capacitance at 5 V enables fast switching (13 ns tRR) with minimal capacitive loss in high-frequency rectification.
Thermally, it delivers 1.0 A average forward current with derating above 25°C ambient-maintaining 0.6 A at 125°C (D = 0.5 duty cycle)-and achieves 7 °C/W junction-to-solder-point thermal resistance when mounted on recommended copper pad layouts per Diodes' package outline documentation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 150 V - Maximum repetitive reverse blocking voltage; defines safe operating range in 12–48 V automotive bus clamping and 48 V DC-DC output stages. |
| IF(AV) | 1.0 A - Average forward rectified current at +25°C; supports continuous conduction mode operation in compact 5–10 W power supplies. |
| VF Max | 0.82 V @ 1.0 A - Low conduction loss enabling >92% efficiency in 12 V input buck converters at full load. |
| IR Max | 2 µA @ 150 V - Ultra-low leakage preserves battery standby time in always-on automotive modules. |
| tRR | 13 ns - Fast recovery minimizes switching losses and EMI in 300–500 kHz SMPS topologies. |
| RθJS | 7 °C/W - Enables direct thermal path to PCB copper, reducing junction temperature rise by ~7°C per watt vs. standard SOD-123. |
Pinout & Package
Package: PowerDI123 - surface-mount, single-diode configuration with cathode band marking on top view; molded green compound (UL 94V-0), matte tin annealed terminals, 0.01 g mass.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry | Connected to input/source side of rectification path; requires adequate copper pour for thermal dissipation. |
| Cathode | Forward current exit / reverse voltage reference | Marked by band; ties to output/load or ground return; serves as thermal interface to PCB solder pad. |
Key Features
| Feature | Design Value |
|---|---|
| Guard ring die construction | Suppresses edge breakdown during voltage transients, extending lifetime in automotive load-dump environments. |
| Interlocking clip design | Increases mechanical bond strength and current-carrying cross-section, enabling 50 A surge survival without wirebond failure. |
| AEC-Q101 qualification | Validated for automotive use including PPAP submission support and IATF 16949 manufacturing control. |
| Halogen & antimony free | Meets <900 ppm Br, <900 ppm Cl, <1000 ppm Sb thresholds-compliant with EU ELV and JIG guidelines. |
Applications
| Automotive DC-DC Converters | Industrial SMPS Outputs |
|---|---|
Use Scenario: 12 V to 5 V/3.3 V point-of-load conversion in ADAS camera modules and infotainment head units. IC Role / Device Role / Timing Role: Output rectifier in synchronous or asynchronous buck topology. Use Value: 0.82 V VF reduces conduction loss by 180 mW vs. standard 1 A Schottky, lowering thermal stress in sealed enclosures. |
Use Scenario: Secondary-side rectification in 24 V input, 12 V/5 A industrial power supplies. IC Role / Device Role / Timing Role: Freewheeling diode in flyback or forward converter output stage. Use Value: 50 A IFSM rating ensures survivability during 100 ms overcurrent events common in motor drive auxiliary supplies. |
| Reverse Polarity Protection | Blocking Diodes in Battery Backup Systems |
Use Scenario: Input protection for 24 V vehicle telematics gateways exposed to accidental battery reversal. IC Role / Device Role / Timing Role: Series-blocking diode in main power rail. Use Value: 2 µA IR at 150 V prevents >1 µA standby drain-critical for >10-year battery-backed memory retention. |
Use Scenario: Isolation between primary LiFePO₄ backup battery and main 48 V telecom system rail. IC Role / Device Role / Timing Role: OR-ing diode preventing backfeed and enabling seamless switchover. Use Value: 150 V VRRM accommodates 48 V nominal systems with 100 V surge margin per IEC 61000-4-5 Level 4. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SB1150-TB | Same VRRM (150 V) and IF(AV) (1.0 A), but VF = 0.85 V (max @ 1.0 A); no AEC-Q101 qualification. | Not suitable for automotive production; limited to commercial-grade industrial or consumer power supplies. | Select only if AEC-Q101 is not required and 30 mV higher VF is acceptable in thermal budget. |
| SS115-HF | Lower VRRM (100 V); VF = 0.83 V (max @ 1.0 A); same PowerDI123 package and RoHS/Green status. | Restricted to ≤48 V systems; cannot replace DFLS1150Q in 12 V automotive inputs with load dump. | Use only in cost-sensitive 24 V applications where 150 V margin is unnecessary. |
Compared with SB1150-TB and SS115-HF, the DFLS1150Q uniquely combines automotive qualification, 150 V blocking, and 0.82 V VF-making it the sole choice for AEC-compliant 12/24 V DC-DC rectification where thermal headroom and transient immunity are non-negotiable.
Availability
DFLS1150Q is available at Aetrix Electronics and suitable for automotive DC-DC converters, industrial SMPS outputs, and reverse polarity protection circuits requiring stable component supply across multi-year production cycles.
Supply support for DFLS1150Q 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.
The DFLS1150Q belongs to Diodes' PowerDI® Schottky rectifier product line, engineered specifically for high-reliability automotive and industrial power conversion where low VF, high surge tolerance, and AEC-Q101 compliance are mandatory.
FAQ
Is the DFLS1150Q suitable for synchronous rectification?
No-the DFLS1150Q is a passive Schottky diode, not a MOSFET-based synchronous rectifier. It lacks gate control and cannot be actively switched. It functions exclusively as a unidirectional freewheeling or output rectifier in asynchronous topologies such as standard flyback or buck converters.
What is the maximum allowable PCB pad size for thermal performance?
Diodes recommends a minimum 1-inch square copper pad (2 oz.) for optimal RθJA of 70 °C/W. Larger pads improve heat spreading but do not reduce RθJS below 7 °C/W, as that metric is defined from die center to solder joint-not ambient.
Does the DFLS1150Q require derating for capacitive loads?
Yes-per datasheet note, average forward current must be derated by 20% when used with capacitive loads due to higher peak currents. At +25°C, IF(AV) drops from 1.0 A to 0.8 A to ensure reliable operation and avoid thermal runaway.
Can the DFLS1150Q replace a standard SOD-123 Schottky in existing layouts?
No-PowerDI123 has different footprint dimensions (e.g., E = 3.70 mm, E1 = 2.80 mm) versus SOD-123 (E ≈ 2.6 mm). Direct replacement requires PCB redesign; thermal and electrical benefits are offset by mechanical incompatibility without layout revision.
DFLS1150Q-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- POWERDI®123
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 150 V
- Current - Average Rectified (Io):
- 1A
- Voltage - Forward (Vf) (Max) @ If:
- 820 mV @ 1 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- -
- Capacitance @ Vr, F:
- 28pF @ 5V, 1MHz
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- PowerDI™ 123
- Operating Temperature - Junction:
- -55°C ~ 175°C
DFLS1150Q-7 FAQ
1.How can I place an order for DFLS1150Q-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for DFLS1150Q-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 DFLS1150Q-7 reliable?
The price and inventory of DFLS1150Q-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DFLS1150Q-7 is usually 5 days.
3.What payment methods are accepted for DFLS1150Q-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DFLS1150Q-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DFLS1150Q-7?
DFLS1150Q-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DFLS1150Q-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 DFLS1150Q-7?
For technical support, including DFLS1150Q-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DFLS1150Q-7 requirements.
6.How does Aetrix verify that DFLS1150Q-7 is sourced from the original manufacturer or authorized distributors?
All DFLS1150Q-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 DFLS1150Q-7 meets industry standards.
7.What is the process for return or replacement of DFLS1150Q-7?
All DFLS1150Q-7 units undergo pre-shipment inspection (PSI). If there is an issue with DFLS1150Q-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 DFLS1150Q-7 part is unused and in its original packaging.
Return procedure for DFLS1150Q-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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