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Diodes Incorporated S1MSP1M-7
- Part No.:
- S1MSP1M-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Diodes
- Package:
- POWERDI®123
- Datasheet:
-
S1MSP1M-7.pdf
- Description:
- DIODE GP 1KV 1A POWERDI123
- Quantity:
- Payment:
- Shipping:
Inventory:3,357
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Product details
Overview
S1MSP1M-7 from Diodes Incorporated is a 1.0A, 1000V standard recovery surface-mount rectifier in the PowerDI123 package. It delivers low forward voltage (1.1V max @ 1A), ultra-low reverse leakage (10µA max @ 1000V, 25°C), and fast reverse recovery (1.2µs typ), making it suitable for high-efficiency AC-DC adapters, DC-DC converters, and LED lighting power stages.
For engineers reviewing the S1MSP1M-7 datasheet, S1MSP1M-7 pinout, S1MSP1M-7 application, or S1MSP1M-7 equivalent, key selection criteria include its 1000V VRRM, thermal resistance of 54°C/W (J-A, 1"×1" 2oz Cu pad), 1.2µs trr, and compatibility with automated SMT assembly due to its low-profile (<1.0mm height) PowerDI123 footprint.
Technical Context
This standard recovery rectifier uses glass-passivated die construction for robustness and stable reverse breakdown performance. Its 1000V peak repetitive reverse voltage and 25A non-repetitive surge rating support reliable operation in line-input rectification and flyback secondary-side applications.
The device achieves enhanced thermal performance via an exposed heat sink on the underside of the PowerDI123 package, delivering RθJA = 54°C/W under optimized PCB layout-significantly lower than typical SOD-123 equivalents-and supports continuous 1.0A conduction at +30°C ambient.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 1000 V - Withstands full AC line peaks up to 700V RMS without breakdown |
| IO | 1.0 A - Rated average forward current at +30°C ambient, derated above that temperature |
| VF Max | 1.1 V @ 1A - Minimizes conduction loss and self-heating in compact power supplies |
| trr | 1.2 µs typ - Enables efficient operation in 100–500 kHz switching converters |
| IR Max | 10 µA @ 1000V, 25°C - Ensures minimal standby power loss in offline adapters |
| RθJA | 54 °C/W - Achieved with 1"×1", 2oz Cu pad; enables higher power density vs. SOD-123 |
| Package | PowerDI123 - Low-profile (≤1.0 mm), thermally enhanced, RoHS-compliant SMT package |
Pinout & Package
PowerDI123 is a 2-terminal surface-mount package with cathode band marking. The exposed copper pad on the underside serves as the cathode terminal and primary thermal path to the PCB.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Top-side metallized pad; connects to input/AC side in bridge or single-diode rectifier |
| Cathode | Forward current exit / reverse blocking node | Exposed metal pad on bottom; must be soldered to large copper pour for thermal and electrical connection |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated die | Ensures long-term reliability and stable V(BR)R under humidity and thermal cycling |
| Low profile (<1.0 mm height) | Enables ultra-thin power adapter designs and compatibility with tight Z-axis constraints |
| Exposed thermal pad (cathode) | Reduces RθJA by ~60% vs. standard SOD-123, improving power handling at same board area |
| Lead-free, halogen-free "Green" construction | Meets RoHS 3 (2015/863/EU) and automotive change-control requirements per AEC-Q101 |
Applications
| AC-DC Adapters | DC-DC Converters |
|---|---|
Use Scenario: Primary-side rectification in universal-input (90–264V AC) wall adapters for consumer electronics. IC Role / Device Role / Timing Role: Standard recovery rectifier conducting during positive half-cycles; blocks reverse voltage during negative half-cycles. Use Value: 1000V VRRM safely handles 264V AC peaks with margin; 1.1V VF limits conduction loss at 1A output. | Use Scenario: Output rectification in isolated flyback or forward converters powering USB-C PD or industrial sensors. IC Role / Device Role / Timing Role: Secondary-side unidirectional current path; recovers within 1.2µs to minimize switching loss during dead time. Use Value: Fast trr reduces voltage spikes and EMI; low IR prevents output rail discharge during light load. |
| LED Lighting Drivers | Mobile Device Charging Circuits |
Use Scenario: Bridge rectification in constant-current LED drivers for commercial downlights and streetlights. IC Role / Device Role / Timing Role: One leg of full-wave bridge; conducts 50/60Hz line frequency current with minimal heating. Use Value: 1.0A IO rating supports >10W LED loads; RθJA = 54°C/W allows operation without heatsink at 50°C ambient. | Use Scenario: Input protection and rectification in multi-port USB chargers with shared AC front-end. IC Role / Device Role / Timing Role: Standby rectifier feeding bulk capacitor; blocks reverse current during no-load conditions. Use Value: 10µA IR max ensures <1mW standby loss; PowerDI123 footprint enables dense, automated assembly. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar standard recovery rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SB1M-13-F | Same VRRM (1000V), but SOD-123 package; RθJA = 137°C/W (no exposed pad) | Limited to lower-power (<0.5A) or forced-air-cooled designs due to higher thermal resistance | Select when legacy SOD-123 footprint compatibility is required and thermal budget permits |
| ES1J-M3/84A | 1000V VRRM, 1A IO, but ultrafast recovery (35ns); VF = 1.7V max @ 1A | Better for high-frequency SMPS (>1 MHz), but higher conduction loss reduces efficiency at 100–500 kHz | Select only if trr < 50ns is mandatory and VF penalty is acceptable |
Compared with SB1M-13-F and ES1J-M3/84A, the S1MSP1M-7 uniquely balances low VF, fast trr, and superior thermal performance in a low-profile SMT package-making it optimal for space-constrained, thermally demanding 100–500 kHz AC-DC and DC-DC power stages.
Availability
S1MSP1M-7 is available at Aetrix Electronics and suitable for AC-DC adapters, LED lighting drivers, and mobile device charging circuits requiring stable component supply, consistent parametric performance, and long-term manufacturing continuity.
Supply support for S1MSP1M-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, marketing, and logistics operations across Asia, Europe, and the Americas.
The S1MSP1M-7 belongs to Diodes' Power Rectifiers product line, engineered specifically for high-voltage, medium-current standard recovery applications where thermal efficiency, reliability, and SMT manufacturability are critical.
FAQ
What is the maximum junction temperature for continuous operation?
The S1MSP1M-7 has an operating junction temperature range of –55°C to +150°C. For continuous 1.0A operation at +30°C ambient, the junction temperature remains below 125°C using the recommended 1"×1", 2oz Cu pad layout-well within safe operating limits and supporting long-term reliability in sealed enclosures.
Is the PowerDI123 package compatible with standard SMT reflow profiles?
Yes-the PowerDI123 package is qualified for lead-free reflow per J-STD-020, with moisture sensitivity level (MSL) 1. Its matte tin finish over copper leadframe ensures reliable solder wetting. No special pre-bake or profile adjustments are needed beyond standard Pb-free peak temperatures (260°C max).
Does this rectifier meet automotive qualification standards?
The S1MSP1M-7 is not AEC-Q101 qualified out-of-box, but Diodes offers automotive-grade variants (e.g., S1MSP1MQ-7) with PPAP documentation, IATF 16949 manufacturing, and extended temperature validation. Standard S1MSP1M-7 is rated for industrial use up to +150°C junction temperature.
How does the exposed cathode pad affect PCB layout?
The exposed cathode pad must be connected to a minimum 1"×1" copper pour with 2oz copper thickness to achieve the published RθJA = 54°C/W. Thermal vias (≥6×0.3mm) beneath the pad are recommended to transfer heat to inner or back-layer planes-failure to implement this degrades thermal performance by up to 40°C/W.
S1MSP1M-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):
- 1000 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):
- 1.2 µs
- Current - Reverse Leakage @ Vr:
- 10 µA @ 1000 V
- Capacitance @ Vr, F:
- 2.8pF @ 4V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- PowerDI™ 123
- Operating Temperature - Junction:
- -55°C ~ 150°C
S1MSP1M-7 FAQ
1.How can I place an order for S1MSP1M-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for S1MSP1M-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 S1MSP1M-7 reliable?
The price and inventory of S1MSP1M-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for S1MSP1M-7 is usually 5 days.
3.What payment methods are accepted for S1MSP1M-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for S1MSP1M-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for S1MSP1M-7?
S1MSP1M-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your S1MSP1M-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 S1MSP1M-7?
For technical support, including S1MSP1M-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your S1MSP1M-7 requirements.
6.How does Aetrix verify that S1MSP1M-7 is sourced from the original manufacturer or authorized distributors?
All S1MSP1M-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 S1MSP1M-7 meets industry standards.
7.What is the process for return or replacement of S1MSP1M-7?
All S1MSP1M-7 units undergo pre-shipment inspection (PSI). If there is an issue with S1MSP1M-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 S1MSP1M-7 part is unused and in its original packaging.
Return procedure for S1MSP1M-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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