My Inquiry
My Account
Diodes Incorporated RS1MSWFM-7
- Part No.:
- RS1MSWFM-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Diodes
- Package:
- SOD-123F
- Datasheet:
-
RS1MSWFM-7.pdf
- Description:
- DIODE GEN PURP 1KV 1A SOD123F
- Quantity:
- Payment:
- Shipping:
Inventory:1,021
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
RS1MSWFM from Diodes Incorporated is a 1.0A, 1000V fast recovery surface-mount rectifier in SOD123F (Type B) package, featuring 500ns max reverse recovery time, 1.3V max forward voltage at 1A/25°C, and 10µA max leakage at 1000V/25°C. It serves as a high-efficiency AC-DC and DC-DC power conversion diode in compact power adapters and LED lighting systems.
For engineers reviewing the RS1MSWFM datasheet, RS1MSWFM pinout, RS1MSWFM application, or RS1MSWFM equivalent, key selection criteria include its 1000V peak repetitive reverse voltage, fast 500ns trr performance, low-profile SOD123F footprint, JEDEC-qualified reliability, and RoHS-compliant green packaging for space-constrained industrial and consumer power supplies.
Technical Context
This device implements a glass-passivated silicon PN junction optimized for fast switching in unidirectional rectification. Its 148ns typical reverse recovery time (trr) and 4.7pF junction capacitance at 4V enable efficient operation in 50–500kHz SMPS topologies without excessive switching loss or EMI generation.
The SOD123F package provides thermal resistance of 82°C/W (junction-to-ambient) on standard FR4 PCBs, supporting 1.0A average forward current at +75°C ambient. Polarity is marked by cathode band; terminals use matte tin over copper leadframe for reliable solderability per MIL-STD-202.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 1000 V - Withstands peak reverse voltages up to 1000V in AC line rectification without breakdown |
| IO (TA = +75°C) | 1.0 A - Continuous average forward current rating under real-world board-level thermal conditions |
| VF Max | 1.3 V @ 1A, 25°C - Limits conduction loss to ≤1.3W per diode in 1A load paths |
| trr Max | 500 ns - Enables stable operation in high-frequency switchers up to ~500kHz with minimal tail current loss |
| IR Max | 10 µA @ 1000V, 25°C - Ensures low standby power loss in high-impedance hold-up or sensing circuits |
| RθJA | 82 °C/W - Defines required PCB copper area and layout for thermal management on standard FR4 |
| CT | 4.7 pF @ 4V, 1MHz - Minimizes capacitive coupling noise in high-dv/dt gate-drive or snubber applications |
Pinout & Package
SOD123F (Type B) is a 2-terminal surface-mount plastic package with cathode band marking, 0.0016g mass, and UL 94V-0 molded compound. Dimensions: D = 1.80mm, E = 2.70mm, He = 3.50mm, L = 0.35–0.85mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to lower-potential side (e.g., transformer secondary center-tap or buck converter switch node) |
| Cathode (marked) | Forward current exit / reverse blocking terminal | Connected to output rail or filter capacitor; polarity critical for correct rectification direction |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated die | Enhances long-term reliability and moisture resistance in humid environments without hermetic sealing |
| Fast recovery (trr ≤ 500ns) | Reduces switching losses and improves efficiency in 100–500kHz DC-DC converters |
| SOD123F low-profile footprint | Enables <1.2mm board height in ultra-thin AC-DC adapters and portable chargers |
| Lead-free, halogen-free "Green" construction | Meets RoHS 3 (2015/863/EU) and automotive change-control requirements without antimony/bromine exemptions |
Applications
| Switching Mode Power Supplies | LED Lighting Drivers |
|---|---|
Use Scenario: Output rectification in 12–24V, 1A isolated flyback converters for industrial control power rails. IC Role / Device Role / Timing Role: Unidirectional current valve converting high-frequency transformer secondary AC to regulated DC output. Use Value: 500ns trr minimizes energy loss during MOSFET turn-on transitions, improving overall converter efficiency by ~1.2% at 250kHz. | Use Scenario: Secondary-side rectification in constant-current LED drivers for commercial downlights (24–48V, 0.7–1A). IC Role / Device Role / Timing Role: High-voltage output stage diode handling 1000V surge transients during AC line dropouts. Use Value: 1000V VRRM ensures robustness against 1.2/50µs lightning surges up to 6kV in IEC 61000-4-5 Level 3 testing. |
| AC-DC Adapters | Mobile Device Chargers |
Use Scenario: Input bridge or output rectifier in universal-input (90–264VAC), 5–12W wall adapters. IC Role / Device Role / Timing Role: Fast-recovery diode in discrete bridge or synchronous rectifier auxiliary path. Use Value: SOD123F footprint allows direct replacement of larger DO-214AC parts, reducing board area by 65%. | Use Scenario: USB-C PD 20W charger output rectification with 9V/2.22A or 15V/1.33A profiles. IC Role / Device Role / Timing Role: Low-loss freewheeling path during buck-boost converter dead-time intervals. Use Value: 1.3V VF max limits conduction loss to ≤1.2W at full load, enabling thermally constrained 12mm × 12mm PCB layouts. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fast recovery rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH1R06 | Same 1A/600V rating but TO-220AC package; 150ns trr typ, higher VF (1.7V) | Requires heatsink for >0.5A continuous; unsuitable for SMT-only designs | Select only when through-hole mounting and lower trr are prioritized over size and thermal resistance |
| ON Semi MUR110 | 1A/1000V, DO-41 package; 75ns trr typ, VF = 1.25V, RθJA = 120°C/W | Larger footprint, higher thermal resistance limits usable current to 0.6A at +75°C ambient | Prefer for legacy through-hole designs where faster trr justifies reduced power density |
Compared with STTH1R06 and MUR110, RS1MSWFM delivers optimal balance of high-voltage capability, SMT compatibility, and thermal performance-enabling 1A operation in space-limited, fanless applications where TO-220 or DO-41 footprints are prohibitive.
Availability
RS1MSWFM is available at Aetrix Electronics and suitable for switching mode power supplies, LED lighting drivers, and AC-DC adapters requiring stable component supply across production lifecycles.
Supply support for RS1MSWFM 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.
RS1MSWFM belongs to Diodes' high-reliability rectifier product line, engineered specifically for compact, high-efficiency AC-DC and DC-DC power conversion in consumer, industrial, and lighting applications.
FAQ
What is the maximum operating temperature for RS1MSWFM?
The RS1MSWFM supports junction temperatures from –55°C to +150°C, with derated average forward current beginning at +75°C ambient. At +125°C case temperature, IO drops to 0.5A per Figure 1; thermal design must maintain RθJA ≤ 82°C/W using recommended SOD123F pad layout on 2oz copper FR4.
Is RS1MSWFM qualified for automotive applications?
RS1MSWFM itself is not AEC-Q200 qualified; however, Diodes offers automotive-grade equivalents (e.g., RS1MSWFMQ with Q-suffix) that meet AEC-Q200, are PPAP-capable, and manufactured in IATF 16949-certified facilities. These variants share identical electrical specs and SOD123F packaging.
How does RS1MSWFM's trr compare to standard recovery rectifiers?
At 148ns typical and 500ns maximum, RS1MSWFM's reverse recovery time is 3–5× faster than general-purpose rectifiers like 1N4007 (30µs trr), reducing switching loss and EMI in high-frequency SMPS. This enables clean zero-crossing behavior in 250–500kHz converters without snubber networks.
Can RS1MSWFM replace a Schottky diode in 12V output circuits?
No-RS1MSWFM is a PN junction fast recovery rectifier with 1.3V VF, unsuitable as a direct Schottky replacement where low VF (<0.5V) is critical. For 12V outputs, Schottky alternatives (e.g., SB1100) offer lower conduction loss; RS1MSWFM is selected for ≥100V applications where Schottky leakage and voltage limits become prohibitive.
RS1MSWFM-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SOD-123F
- 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:
- 1.3 V @ 1 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 500 ns
- Current - Reverse Leakage @ Vr:
- 10 µA @ 1000 V
- Capacitance @ Vr, F:
- 4.7pF @ 4V, 1MHz
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-123F
- Operating Temperature - Junction:
- -55°C ~ 150°C
RS1MSWFM-7 FAQ
1.How can I place an order for RS1MSWFM-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for RS1MSWFM-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 RS1MSWFM-7 reliable?
The price and inventory of RS1MSWFM-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for RS1MSWFM-7 is usually 5 days.
3.What payment methods are accepted for RS1MSWFM-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for RS1MSWFM-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for RS1MSWFM-7?
RS1MSWFM-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your RS1MSWFM-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 RS1MSWFM-7?
For technical support, including RS1MSWFM-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your RS1MSWFM-7 requirements.
6.How does Aetrix verify that RS1MSWFM-7 is sourced from the original manufacturer or authorized distributors?
All RS1MSWFM-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 RS1MSWFM-7 meets industry standards.
7.What is the process for return or replacement of RS1MSWFM-7?
All RS1MSWFM-7 units undergo pre-shipment inspection (PSI). If there is an issue with RS1MSWFM-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 RS1MSWFM-7 part is unused and in its original packaging.
Return procedure for RS1MSWFM-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
RS1MSWFM-7 Tags
-
1N4448X-TP
Micro Commercial Co
-
1N4148WX-TP
Micro Commercial Co
-
1N4148TR
onsemi
-
MMSD4148T1G
onsemi
-
MMBD914LT3G
onsemi
-
BAS16HT1G
onsemi
-
1N914BWT
onsemi
-
BAS21LT1G
onsemi
-
LL4148
onsemi
-
BAS16LT1G
onsemi
-
MMSD914T1G
onsemi
-
BAV21W-7-F
Diodes Incorporated
Tech Hub
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
LDO regulator guide covering low dropout voltage, power dissipation, thermal design, PSRR, output noise, capacitor stability, adjustable LDO circuits, LDO vs buck converter and datasheet selection chec…
Conditional Access Module guide covering CAM meaning, CI/CI+ interface, smart card authorization, DVB security workflow, TV and set-top box compatibility, internal electronics, ESD protection, connecto…
Guide to electronic component obsolescence covering EOL risk, PCN/PDN notices, last-time buy planning, replacement options, form-fit-function validation, counterfeit risk and BOM lifecycle management.
18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…
Hall effect sensor guide covering working principle, linear and digital sensors, Arduino circuits, current sensing, speed detection, automotive applications, A3144 examples, signal filtering and datash…
Product Change Notification guide for electronic components, covering PCN meaning, PCN vs PDN/EOL, common change types, risk levels, form-fit-function review, engineering validation, BOM control, LTB/L…
A practical guide to blend door actuators, covering HVAC function, symptoms, location, AC and heater issues, reset and calibration, replacement cost, electrical diagnosis, compatibility checks, and rep…
