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Diodes Incorporated DF1502S
- Part No.:
- DF1502S
- Manufacturer:
- Diodes Incorporated
- Category:
- Bridge Rectifiers
- Package:
- 4-SMD, Gull Wing
- Datasheet:
-
DF1502S.pdf
- Description:
- BRIDGE RECT 1P 200V 1.5A DF-S
- Quantity:
- Payment:
- Shipping:
Inventory:9,181
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Product details
Overview
DF1502S from Diodes Incorporated is a surface-mount standard recovery bridge rectifier with 200 V peak repetitive reverse voltage (VRRM), 1.5 A average forward current (IO), and 1.1 V maximum forward voltage drop at 1.5 A. It features glass-passivated die construction, 50 A non-repetitive surge capability, and UL recognition (E364304), designed for AC/DC power conversion in compact industrial power supplies.
For engineers reviewing the DF1502S datasheet, DF1502S pinout, DF1502S application, or DF1502S equivalent, key selection considerations include its DF-S package thermal resistance (40 °C/W), 10 µA reverse leakage at 25 °C, 25 pF typical junction capacitance, and suitability for 60 Hz line-frequency rectification with resistive or inductive loads.
Technical Context
This single-phase, full-wave bridge rectifier integrates four silicon diodes in a monolithic DF-S molded plastic package. Its standard recovery characteristic (typical reverse recovery time not specified but consistent with standard recovery diodes) supports line-frequency operation without high-frequency switching losses.
The device operates across –55 °C to +150 °C, with thermal performance defined on PCB land patterns of 5.0 mm² (0.03 mm thick). Derating begins above +40 °C ambient, and capacitive load applications require 20 % current derating per datasheet guidance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 200 V - Maximum peak reverse voltage the bridge withstands without breakdown; sets AC input voltage limit (e.g., ≤141 V RMS). |
| IO @ TA=+40°C | 1.5 A - Continuous DC output current capability under defined thermal conditions; basis for power supply output rating. |
| VFM @ IF=1.5A | 1.1 V - Forward voltage per diode element; determines conduction loss (≈2.2 V total bridge drop at full load). |
| IFSM (8.3 ms) | 50 A - Surge current tolerance during cold-start or transient events; informs fuse and upstream protection sizing. |
| IRM @ 25°C | 10 µA - Reverse leakage per element at rated DC blocking voltage; impacts standby power and high-impedance circuit integrity. |
| RθJA | 40 °C/W - Junction-to-ambient thermal resistance on standard PCB; used to calculate max junction temperature rise (ΔTJ = Pd × 40). |
| CT @ 1 MHz | 25 pF - Typical junction capacitance per diode; influences EMI filtering design and high-frequency noise coupling. |
Pinout & Package
Package: DF-S, surface-mount molded plastic (UL 94V-0), 7.4–7.9 mm × 6.2–6.5 mm × 2.4–2.6 mm footprint, 0.38 g weight, tin-solderable terminals.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| AC1 | Input AC terminal 1 | One AC input node of full-wave bridge; connects to live/phase side of transformer secondary or AC line. |
| AC2 | Input AC terminal 2 | Second AC input node; completes AC input path-polarity must match schematic layout to avoid reverse rectification. |
| + (Anode Output) | Positive DC output | Full-wave rectified positive rail; routed to bulk capacitor and downstream regulator; polarity marking on case aligns with this pin. |
| – (Cathode Output) | Negative DC output / common return | DC common reference; ties to bulk capacitor negative and system ground; serves as return path for all rectified current. |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated die | Enhances long-term reliability and moisture resistance in humid or thermally cycling environments. |
| 50 A surge rating (8.3 ms) | Supports inrush current handling during power-up without degradation-critical for transformer-coupled supplies. |
| UL Recognized Component (E364304) | Validates safety compliance for end-equipment certification; reduces qualification burden for industrial and medical designs. |
| Lead-free & RoHS 3 compliant | Meets global environmental regulations; enables use in EU, China, and other regulated markets without exemptions. |
Applications
| Industrial AC/DC Power Supplies | Consumer Wall Adapters |
|---|---|
Use Scenario: Off-line 24 V/1.2 A power supply for PLC I/O modules using toroidal transformer and bulk capacitor input stage. IC Role / Device Role / Timing Role: Full-wave bridge rectifier converting 24 VAC transformer output to pulsating DC prior to filtering and regulation. Use Value: 1.1 V forward drop minimizes conduction loss (2.2 V total bridge drop), improving efficiency over higher-VF alternatives at 1.5 A load. | Use Scenario: Compact 12 V/1 A wall plug-in adapter for smart home sensors with space-constrained PCB layout. IC Role / Device Role / Timing Role: Surface-mount bridge rectifier enabling direct replacement of through-hole GBU packages while maintaining same footprint area. Use Value: DF-S package (7.7 × 6.35 mm) reduces board area by >40 % vs. comparable GBU6K, easing miniaturization. |
| LED Driver Input Stages | Embedded System Auxiliary Power |
Use Scenario: Constant-voltage LED driver for architectural lighting, accepting 120 VAC input with passive PFC and buck converter topology. IC Role / Device Role / Timing Role: Primary rectification stage feeding bulk capacitor; operates at line frequency with minimal switching stress. Use Value: Standard recovery behavior avoids high dv/dt-induced EMI issues common with fast-recovery diodes in low-frequency applications. | Use Scenario: Auxiliary 5 V/0.8 A bias supply in an industrial gateway, derived from main 24 VAC control bus. IC Role / Device Role / Timing Role: Isolated AC/DC front-end rectifier providing isolated DC rail for microcontroller and interface ICs. Use Value: –55 °C to +150 °C operating range ensures functionality in uncontrolled cabinet environments where ambient exceeds 85 °C. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bridge rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| GBU6K | Same 200 V VRRM and 1.5 A IO, but through-hole GBU package (15.2 × 10.2 mm); higher RθJA (~30 °C/W on larger pad). | Requires PCB through-holes and larger board area; unsuitable for fully SMT lines. | Select when legacy board reuse or manual assembly is required; avoid if automated SMT placement is mandatory. |
| DF1502S-T | Identical electrical specs and DF-S package; differs only in tape-and-reel packaging (1500 pcs/reel vs. 50/tube for DF1502S). | No functional difference; same thermal, electrical, and mechanical behavior in circuit. | Select DF1502S-T for high-volume automated pick-and-place; choose DF1502S for prototyping or low-volume builds. |
Compared with GBU6K, DF1502S saves board space and enables full SMT assembly, while matching core ratings; versus DF1502S-T, it offers identical performance with tube packaging for flexibility in small-batch deployment.
Availability
DF1502S is available at Aetrix Electronics and suitable for industrial AC/DC power supplies, consumer wall adapters, and LED driver input stages requiring stable component supply and RoHS-compliant sourcing.
Supply support for DF1502S 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 the Americas.
The DF-series bridge rectifiers are part of Diodes' standard recovery rectifier product line, engineered for cost-effective, reliable AC/DC conversion in line-frequency power supplies across industrial, consumer, and lighting applications.
FAQ
What is the maximum allowable ambient temperature for continuous 1.5 A operation?
DF1502S delivers its full 1.5 A rated current only at TA = +40 °C. Above this temperature, output current must be linearly derated per Figure 1 in the datasheet, reaching zero at approximately +125 °C ambient. For operation at +60 °C ambient, the usable current drops to ~1.1 A based on the published derating curve.
Can DF1502S be used with capacitive input filters without additional design changes?
No-capacitive input filters require 20 % current derating per the datasheet. At 1.5 A rated IO, the safe continuous current becomes 1.2 A. Additionally, inrush current increases significantly, so soft-start circuitry or NTC thermistors should be added to limit peak surge beyond the 50 A IFSM rating.
Is DF1502S qualified for automotive applications under AEC-Q101?
No-DF1502S is not AEC-Q101 qualified. The datasheet explicitly states that automotive-grade versions require separate qualification (e.g., PPAP, IATF 16949 manufacturing), and users must contact Diodes directly for such variants. This part is intended for industrial and commercial applications only.
How does the DF-S package compare thermally to SMB or GBU packages at the same current?
DF-S has RθJA = 40 °C/W on a 5.0 mm² pad, which is higher (worse) than GBU6K's ~30 °C/W on larger pads but better than many SMB bridges (~50–60 °C/W). Effective thermal performance depends heavily on copper area: doubling the pad size can reduce RθJA by ~15 %, making DF-S competitive when properly laid out.
DF1502S Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- 4-SMD, Gull Wing
- Packaging:
- Bulk
- Product Status:
- Active
- Diode Type:
- Single Phase
- Technology:
- Standard
- Voltage - Peak Reverse (Max):
- 200 V
- Current - Average Rectified (Io):
- 1.5 A
- Voltage - Forward (Vf) (Max) @ If:
- 1.1 V @ 1.5 A
- Current - Reverse Leakage @ Vr:
- 10 µA @ 100 V
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DF-S
DF1502S FAQ
1.How can I place an order for DF1502S through Aetrix?
Please submit a Request for Quotation (RFQ) for DF1502S 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 DF1502S reliable?
The price and inventory of DF1502S are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DF1502S is usually 5 days.
3.What payment methods are accepted for DF1502S?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DF1502S transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DF1502S?
DF1502S orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DF1502S 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 DF1502S?
For technical support, including DF1502S datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DF1502S requirements.
6.How does Aetrix verify that DF1502S is sourced from the original manufacturer or authorized distributors?
All DF1502S 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 DF1502S meets industry standards.
7.What is the process for return or replacement of DF1502S?
All DF1502S units undergo pre-shipment inspection (PSI). If there is an issue with DF1502S, 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 DF1502S part is unused and in its original packaging.
Return procedure for DF1502S:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
DF1502S Tags
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