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Diodes Incorporated RS1KP1M-7
- Part No.:
- RS1KP1M-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Diodes
- Package:
- POWERDI®123
- Datasheet:
-
RS1KP1M-7.pdf
- Description:
- FAST RECOVERY RECTIFIER PDI123 T
- Quantity:
- Payment:
- Shipping:
Inventory:8,545
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Product details
Overview
RS1KP1M-7 from Diodes Incorporated is a 1.0A surface-mount fast recovery rectifier in the PowerDI123 package, rated for 800V peak repetitive reverse voltage, 1.35V max forward voltage at 1.0A, and 500ns max reverse recovery time. It delivers high-efficiency AC-DC and DC-DC conversion in compact power supplies and chargers.
For engineers reviewing the RS1KP1M-7 datasheet, RS1KP1M-7 pinout, RS1KP1M-7 application, or RS1KP1M-7 equivalent, key selection criteria include its 800V VRRM rating, 500ns tRR performance, thermal resistance of 134°C/W (J-A), 1.0A average output current capability, and RoHS-compliant matte tin finish on copper leadframe.
Technical Context
The RS1KP1M-7 employs a glass passivated silicon die to ensure stable reverse breakdown at 800V and low leakage (≤10µA at 800V, 25°C). Its fast recovery behavior is characterized by a 500ns tRR under IF = 0.5A / IR = 1A / IRR = 0.25A conditions, enabling high-frequency switching operation.
Thermally, it features a junction-to-ambient resistance of 134°C/W on standard FR-4 PCB (1" × 1", 2oz Cu), with a junction-to-case value of 24°C/W and junction-to-soldering-point of 6°C/W - confirming suitability for thermally constrained layouts where solder joint conduction dominates heat transfer.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 800 V - Withstands up to 800V reverse voltage without breakdown, enabling use in 380–400VAC input-derived SMPS designs. |
| IO | 1.0 A - Sustains 1.0A average forward current at +25°C ambient, derated per Figure 5 above 25°C. |
| VF Max | 1.35 V @ 1.0A - Limits conduction loss to ≤1.35W per diode at full load, critical for efficiency in low-voltage-output converters. |
| tRR Max | 500 ns - Enables operation up to ~200 kHz switching frequency before recovery losses dominate, typical for flyback and boost PFC stages. |
| IR Max | 10 µA @ 800V, 25°C - Ensures minimal standby power loss in high-impedance hold-up or sensing circuits. |
| RϴJA | 134 °C/W - Requires ≥1 cm² 2oz copper pad for safe 1.0A operation at +70°C ambient without forced airflow. |
| CT | 6 pF @ 4V, 1MHz - Low junction capacitance minimizes capacitive coupling noise and EMI in high-dv/dt gate-drive or snubber paths. |
Pinout & Package
Package: PowerDI123 - Compact 3-pin surface-mount package with exposed cathode tab for thermal and electrical connection; molded green compound (UL 94V-0), moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to AC input or switch node; requires trace width sufficient for 1.0A continuous current and surge handling. |
| Cathode (Tab) | Forward current exit / thermal path | Exposed metal tab serves as both cathode terminal and primary heat sink interface; must be soldered to ≥1 cm² copper pour. |
| Cathode Band (Marking) | Polarity indicator | Visible band on top surface identifies cathode side; critical for automated optical inspection and placement verification. |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated die | Ensures long-term reliability under humidity and thermal cycling; eliminates need for conformal coating in industrial-grade power adapters. |
| Fast 500ns recovery | Reduces switching loss and EMI generation in 100–200 kHz flyback converters, improving efficiency over standard rectifiers. |
| PowerDI123 package | Delivers 24°C/W junction-to-case thermal resistance in <2.0 mm height - ideal for ultra-thin AC-DC adapters and USB-PD chargers. |
| RoHS & halogen-free | Meets EU RoHS 3 (2015/863/EU) and automotive "Green" standards (<900 ppm Br/Cl, <1000 ppm Sb), supporting global compliance programs. |
Applications
| AC-DC Adaptors/Chargers | DC-DC Converters |
|---|---|
Use Scenario: Secondary-side rectification in 5–65W USB-C PD wall adapters with universal AC input (90–264VAC). IC Role / Device Role / Timing Role: Output rectifier in synchronous or quasi-resonant flyback topology, conducting during transformer reset phase. Use Value: 500ns tRR minimizes reverse recovery ringing and EMI, while 1.35V VF ensures ≥88% efficiency at 5V/3A output. | Use Scenario: Isolated auxiliary supply rectification in telecom DC-DC bricks (48V input, 3.3/5/12V outputs). IC Role / Device Role / Timing Role: Secondary-side freewheeling diode in forward or push-pull converter, handling 1A continuous output current. Use Value: 800V VRRM provides 2× safety margin over reflected 400V transients, and 134°C/W RϴJA enables natural-convection cooling. |
| Industrial Power Supplies | LED Drivers |
Use Scenario: Input bridge rectification in 24V/48V industrial SMPS with wide ambient range (−40°C to +85°C). IC Role / Device Role / Timing Role: High-voltage leg in single-phase bridge configuration, operating at 50/60Hz line frequency with surge tolerance. Use Value: 25A non-repetitive surge rating (IFSM) withstands cold-start inrush into bulk capacitors; −55°C to +150°C TJ range supports extended temperature operation. | Use Scenario: Constant-current LED string rectification in outdoor signage drivers with 300–600VDC bus. IC Role / Device Role / Timing Role: High-side series rectifier in buck-boost LED driver, blocking reverse voltage during PWM off-time. Use Value: 10µA IR at 800V prevents LED leakage-induced dimming or flicker in multi-string configurations. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fast recovery rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH1R08 | Same 800V VRRM, 1A IO, but TO-220AC package (larger, higher RϴJA ≈ 50°C/W); VF = 1.7V @ 1A. | Requires heatsink for >0.5A operation; unsuitable for space-constrained adapters. | Select when board-level thermal management allows discrete heatsinking and legacy through-hole compatibility is needed. |
| MBR1100 | 100V VRRM only; Schottky construction (VF = 0.85V), zero tRR, but limited to low-voltage DC-DC outputs. | Cannot replace RS1KP1M-7 in 400VAC-derived inputs due to insufficient reverse voltage rating. | Choose only for secondary-side 12V/24V outputs where low VF outweighs voltage limitation. |
Compared with STTH1R08 and MBR1100, the RS1KP1M-7 uniquely balances 800V robustness, 500ns speed, and PowerDI123 thermal efficiency - making it optimal for compact, high-input-voltage, medium-power SMPS where size, efficiency, and reliability are jointly constrained.
Availability
RS1KP1M-7 is available at Aetrix Electronics and suitable for AC-DC adaptors/chargers, DC-DC converters, and industrial power supplies requiring stable component supply, JEDEC-qualified reliability, and RoHS-compliant sourcing.
Supply support for RS1KP1M-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 distribution operations across Asia, Europe, and North America.
The RS1KP1M-7 belongs to Diodes' Power Rectifier product line, engineered specifically for high-efficiency, space-constrained AC-DC and isolated DC-DC power conversion in consumer, industrial, and computing applications.
FAQ
What is the maximum junction temperature and how does it affect derating?
The RS1KP1M-7 has an operating junction temperature range of −55°C to +150°C. Its DC forward current must be linearly derated above +25°C ambient, reaching 0A at +150°C per Figure 4. At +70°C ambient, maximum continuous current drops to approximately 0.7A to maintain TJ ≤ 150°C with standard PCB layout.
Is RS1KP1M-7 suitable for automotive applications?
No - RS1KP1M-7 is not AEC-Q200 qualified. Diodes offers automotive-grade equivalents with Q-suffix (e.g., RS1KP1MQ), which undergo PPAP, change control, and IATF 16949 manufacturing. The RS1KP1M-7 is intended for commercial/industrial use only.
How does the PowerDI123 package improve thermal performance over SMA/SMB?
The PowerDI123 exposes the cathode as a large metal tab directly bonded to the die's backside, achieving RϴJC = 24°C/W - nearly 3× better than SMA (RϴJC ≈ 70°C/W). This allows higher power density without external heatsinks, especially when the tab is soldered to ≥1 cm² internal copper layer.
What test conditions define the 500ns reverse recovery time?
tRR = 500ns is measured under IF = 0.5A, IR = 1A, IRR = 0.25A, using the circuit in Figure 7. This reflects real-world recovery behavior during hard-switching transitions in flyback and forward converters, not idealized small-signal conditions.
RS1KP1M-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- POWERDI®123
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 800 V
- Current - Average Rectified (Io):
- 1A
- Voltage - Forward (Vf) (Max) @ If:
- 1.35 V @ 1 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 500 ns
- Current - Reverse Leakage @ Vr:
- 10 µA @ 800 V
- Capacitance @ Vr, F:
- 6pF @ 4V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- PowerDI™ 123
- Operating Temperature - Junction:
- -55°C ~ 150°C
RS1KP1M-7 FAQ
1.How can I place an order for RS1KP1M-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for RS1KP1M-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 RS1KP1M-7 reliable?
The price and inventory of RS1KP1M-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for RS1KP1M-7 is usually 5 days.
3.What payment methods are accepted for RS1KP1M-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for RS1KP1M-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for RS1KP1M-7?
RS1KP1M-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your RS1KP1M-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 RS1KP1M-7?
For technical support, including RS1KP1M-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your RS1KP1M-7 requirements.
6.How does Aetrix verify that RS1KP1M-7 is sourced from the original manufacturer or authorized distributors?
All RS1KP1M-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 RS1KP1M-7 meets industry standards.
7.What is the process for return or replacement of RS1KP1M-7?
All RS1KP1M-7 units undergo pre-shipment inspection (PSI). If there is an issue with RS1KP1M-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 RS1KP1M-7 part is unused and in its original packaging.
Return procedure for RS1KP1M-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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