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Diodes Incorporated S1KP1M-7
- Part No.:
- S1KP1M-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Diodes
- Package:
- POWERDI®123
- Datasheet:
-
S1KP1M-7.pdf
- Description:
- DIODE GP 800V 1A POWERDI123
- Quantity:
- Payment:
- Shipping:
Inventory:1,850
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Product details
Overview
S1KP1M-7 from Diodes Incorporated is a 1.0A surface-mount standard recovery rectifier in PowerDI123 package, rated for 800V peak repetitive reverse voltage, 1.1V max forward voltage at 1.0A/25°C, and 25A non-repetitive surge current. It delivers high thermal efficiency via exposed heatsink on the underside and is deployed in AC-DC adapters, DC-DC converters, and industrial power supplies.
For engineers reviewing the S1KP1M-7 datasheet, S1KP1M-7 pinout, S1KP1M-7 application, or S1KP1M-7 equivalent, key selection criteria include its 800V VRRM rating, 1.0A average forward current capability, 1.5µs reverse recovery time, thermal resistance of 6°C/W junction-to-soldering-point, and RoHS-compliant green packaging with matte tin annealed terminals.
Technical Context
The S1KP1M-7 operates as a unidirectional silicon PN junction rectifier optimized for medium-voltage, medium-current switching power conversion. Its standard recovery behavior (trr = 1.5µs) balances switching loss and EMI in offline SMPS front-ends, while glass passivated die construction ensures long-term reliability under thermal cycling.
Thermal performance is defined by RθJS = 6°C/W to solder point and RθJA = 134°C/W on 1"×1" FR-4 board - enabled by the exposed cathode tab acting as a thermal conduction path. Reverse leakage remains ≤10µA at 800V/25°C and ≤150µA at 125°C, supporting stable blocking in high-temperature environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 800 V - Withstands up to 800V reverse voltage without breakdown in AC line applications |
| IO(AV) | 1.0 A - Continuous DC output current capability at 25°C ambient with derating above 75°C |
| VFMAX | 1.1 V @ 1.0A/25°C - Forward drop determines conduction loss and thermal load in rectification stage |
| IFSM | 25 A @ 8.3ms - Handles inrush surges during power-up in switch-mode power supplies |
| trr | 1.5 µs - Standard recovery speed suitable for 50/60Hz–100kHz operation with low switching noise |
| IRMAX | 10 µA @ 800V/25°C - Low leakage preserves efficiency in high-impedance hold-up circuits |
| RθJS | 6 °C/W - Enables direct heat transfer from die to PCB copper, critical for compact power designs |
Pinout & Package
Package: PowerDI123 - thermally enhanced surface-mount package with exposed cathode tab on underside for PCB-level heat dissipation. Molded green compound (UL 94V-0), 0.01g weight, JEDEC-compliant footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal during forward conduction | Connected to AC input or transformer secondary side; requires adequate trace width for 1A continuous flow |
| Cathode | Current exit terminal during forward conduction; exposed metal pad | Primary thermal path to PCB; must be soldered to ≥1in² copper pour for RθJS = 6°C/W performance |
| Cathode Band | Polarity identification marker | Visible black band on top surface indicating cathode end; critical for automated optical inspection and placement |
Key Features
| Feature | Design Value |
|---|---|
| Exposed cathode heatsink | Reduces junction-to-PCB thermal resistance to 6°C/W, enabling higher power density in space-constrained adapters |
| Glass passivated die | Prevents moisture ingress and surface contamination, ensuring stable VRRM and IR over 10+ year field life |
| Lead-free, halogen-free finish | Matte tin annealed over copper leadframe meets RoHS 3 and automotive "Green" standards (Br+Cl <1500ppm) |
| Automated assembly compatibility | PowerDI123 footprint and G21 marking code support high-yield pick-and-place and AOI verification |
Applications
| AC-DC Adapters | DC-DC Converters |
|---|---|
Use Scenario: Wall-mounted USB-C chargers converting 90–264VAC to 5–20VDC using flyback topology. IC Role / Device Role / Timing Role: Output rectifier delivering regulated DC after transformer isolation and PWM control. Use Value: 800V VRRM withstands reflected voltage spikes; 1.1V VF minimizes conduction loss at 1A load, improving efficiency >85%. | Use Scenario: Isolated 48V-to-12V telecom brick with synchronous rectification disabled. IC Role / Device Role / Timing Role: Secondary-side freewheeling diode in forward converter, conducting during MOSFET off-time. Use Value: 25A IFSM handles transient load steps; 1.5µs trr limits voltage overshoot across primary switch during turn-off. |
| Industrial Power Supplies | LED Driver Circuits |
Use Scenario: DIN-rail mounted 24V/5A supply for PLC I/O modules operating continuously at 60°C ambient. IC Role / Device Role / Timing Role: Input bridge rectifier in full-wave configuration feeding bulk capacitor and PFC stage. Use Value: RθJS = 6°C/W allows reliable operation without heatsink; 150µA IR at 125°C prevents capacitor discharge drift. | Use Scenario: Constant-current LED driver for street lighting with 350mA output and 40V string voltage. IC Role / Device Role / Timing Role: Secondary-side rectifier in quasi-resonant flyback, conducting pulsed current into smoothing capacitor. Use Value: 1.0A IO rating supports 2× design margin; 4pF CT reduces EMI coupling into feedback loop at 1MHz. |
Availability
S1KP1M-7 is available at Aetrix Electronics and suitable for AC-DC adapters, DC-DC converters, and industrial power supplies requiring stable component supply, RoHS-compliant green packaging, and thermal-efficient surface-mount rectification.
Supply support for S1KP1M-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.
The S1KP1M-7 belongs to Diodes' Power Rectifiers product line, engineered for cost-sensitive, thermally demanding AC/DC and DC/DC power conversion where reliability, surge robustness, and green compliance are mandatory.
FAQ
What is the maximum junction temperature for continuous operation of the S1KP1M-7?
The S1KP1M-7 has an operating junction temperature range of –55°C to +150°C. For continuous 1.0A operation, thermal design must ensure TJ does not exceed 150°C - typically achieved by maintaining TA ≤ 75°C with proper PCB copper area per the recommended pad layout and RθJA = 134°C/W derating curve.
Does the S1KP1M-7 have automotive qualification?
No, the S1KP1M-7 is not AEC-Q200 qualified. Diodes offers automotive-grade equivalents with Q-suffix (e.g., S1KP1MQ) that undergo PPAP, are manufactured in IATF 16949 facilities, and meet AEC-Q200 stress testing requirements for passive components.
How is polarity identified on the S1KP1M-7 package?
Polarity is marked by a black cathode band on the top surface of the PowerDI123 package. The cathode terminal corresponds to the exposed metal pad on the underside; the anode is the smaller top-side metallization opposite the band. This matches standard diode marking convention and enables automated optical inspection.
Can the S1KP1M-7 replace a DO-41 or SMA package rectifier in existing designs?
Yes, but only with PCB layout revision: the PowerDI123 footprint differs significantly from DO-41/SMA. Its exposed cathode tab requires dedicated thermal pad and stencil design. Electrical replacement is valid for 800V/1A applications, but thermal performance improves only when the cathode pad is properly connected to PCB copper.
S1KP1M-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:
- 1.1 V @ 1 A
- Speed:
- Standard Recovery >500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 1.5 µs
- Current - Reverse Leakage @ Vr:
- 10 µA @ 800 V
- Capacitance @ Vr, F:
- 4pF @ 4V, 1MHz
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- PowerDI™ 123
- Operating Temperature - Junction:
- -55°C ~ 150°C
S1KP1M-7 FAQ
1.How can I place an order for S1KP1M-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for S1KP1M-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 S1KP1M-7 reliable?
The price and inventory of S1KP1M-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for S1KP1M-7 is usually 5 days.
3.What payment methods are accepted for S1KP1M-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for S1KP1M-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for S1KP1M-7?
S1KP1M-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your S1KP1M-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 S1KP1M-7?
For technical support, including S1KP1M-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your S1KP1M-7 requirements.
6.How does Aetrix verify that S1KP1M-7 is sourced from the original manufacturer or authorized distributors?
All S1KP1M-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 S1KP1M-7 meets industry standards.
7.What is the process for return or replacement of S1KP1M-7?
All S1KP1M-7 units undergo pre-shipment inspection (PSI). If there is an issue with S1KP1M-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 S1KP1M-7 part is unused and in its original packaging.
Return procedure for S1KP1M-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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