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Taiwan Semiconductor Corporation RS1JM
- Part No.:
- RS1JM
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- 2-SMD, Flat Leads
- Datasheet:
-
RS1JM.pdf
- Description:
- 250NS, 1A, 600V, FAST RECOVERY R
- Quantity:
- Payment:
- Shipping:
Inventory:9,996
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Product details
Overview
RS1JM from Taiwan Semiconductor is a 1A, 600V fast recovery surface-mount rectifier in Micro SMA package, featuring 250ns reverse recovery time, 1.30V max forward voltage at 1A, and 20A surge capability-designed for high-efficiency DC-DC converters and switching inverters.
For engineers reviewing the RS1JM datasheet, RS1JM pinout, RS1JM application, or RS1JM equivalent, key selection criteria include repetitive peak reverse voltage (600V), thermal resistance (RθJL = 25°C/W), junction temperature range (–55°C to +150°C), and moisture sensitivity level (J-STD-020 Level 1).
Technical Context
The RS1JM is a single-die, unidirectional fast recovery rectifier optimized for high-frequency switching applications. Its 250ns trr and low VF enable reduced switching losses in SMPS topologies, while its Micro SMA package supports automated placement and meets UL 94V-0 flammability requirements.
Thermal performance is defined by RθJL = 25°C/W and RθJA = 95°C/W, with cathode polarity indicated by a band. It operates across –55°C to +150°C junction temperature and withstands 8.3ms half-sine surges up to 20A.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| IF (Continuous Forward Current) | 1 A - rated continuous conduction capacity under standard thermal conditions |
| VRRM (Repetitive Peak Reverse Voltage) | 600 V - maximum allowable reverse voltage before breakdown in repetitive operation |
| trr (Reverse Recovery Time) | 250 ns - critical timing parameter defining turn-off speed in high-frequency switching |
| VF (Forward Voltage, max) | 1.30 V @ 1A, 25°C - directly impacts conduction loss and thermal load in power stage |
| IFSM (Surge Forward Current) | 20 A @ 8.3ms - defines short-duration overload capability during startup or fault transients |
| RθJL (Junction-to-Lead Thermal Resistance) | 25 °C/W - enables efficient heat transfer to PCB copper, supporting higher power density |
Pinout & Package
Package: Micro SMA - surface-mount, single-anode/single-cathode configuration with cathode indicated by a band; matte tin-plated leads compliant with J-STD-002 solderability and JESD 201 Class 1A whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Input terminal for forward current flow | Connected to lower-potential side (e.g., switch node or transformer secondary) in rectification path |
| Cathode | Output terminal for forward current flow | Marked with band; connects to output rail or filter capacitor positive terminal |
Key Features
| Feature | Design Value |
|---|---|
| Fast recovery time | 250 ns - minimizes reverse recovery charge (Qrr) and associated switching losses in 100 kHz+ converters |
| Low forward voltage | 1.30 V max @ 1A - reduces steady-state I²R losses and improves system efficiency at light-to-moderate loads |
| High surge rating | 20 A IFSM - sustains transient overcurrents without degradation, enhancing reliability in inductive load switching |
| Micro SMA package | Compact footprint (2.7 × 4.2 mm) - enables dense PCB layouts and compatibility with standard SMT pick-and-place equipment |
Applications
| DC-DC Converters | Switching Inverters |
|---|---|
Use Scenario: Secondary-side rectification in isolated flyback or forward converters operating at 50–500 kHz. IC Role / Device Role / Timing Role: Unidirectional current steering device converting high-frequency AC from transformer secondary into regulated DC output. Use Value: 250 ns trr and 1.30 V VF reduce switching and conduction losses, improving efficiency by ~1.2% versus slower 1A rectifiers at 125°C junction. | Use Scenario: Freewheeling or output rectification in single-phase H-bridge inverters for motor drives or UPS systems. IC Role / Device Role / Timing Role: Fast-recovery diode clamping inductive kickback and enabling bidirectional energy flow control. Use Value: 20A IFSM withstands motor stall currents; 600V VRRM supports 400V DC bus designs with 50% safety margin. |
| AC-DC Adapters | Industrial Power Supplies |
Use Scenario: Output rectification in compact 5–24W offline adapters with universal input (90–264 VAC). IC Role / Device Role / Timing Role: Primary-output rectifier delivering stable low-voltage DC after high-frequency transformer isolation. Use Value: Micro SMA package fits tight board space; J-STD-020 Level 1 moisture rating eliminates bake requirement pre-reflow. | Use Scenario: Auxiliary supply rectification and bias winding outputs in telecom or industrial SMPS with extended temperature requirements. IC Role / Device Role / Timing Role: High-reliability rectifier operating continuously at TJ = 125°C in sealed enclosures. Use Value: 150°C max junction temperature and 150 µA IR at 125°C ensure stable operation where thermal derating is critical. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fast recovery rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ON Semiconductor MUR160 | 600V VRRM, 1A IF, 75ns trr, DO-41 package (larger than Micro SMA) | Higher-speed recovery but requires through-hole or larger SMT footprint | Preferred when ultra-fast trr (<100ns) is required and board space allows DO-41 or SMA-K |
| Vishay ES1J | 600V VRRM, 1A IF, 35ns trr, same Micro SMA package | Significantly faster recovery but higher VF (~1.7V) increases conduction loss | Selected when minimizing reverse recovery charge dominates over forward loss in high-frequency ZVS designs |
Compared with MUR160 and ES1J, the RS1JM balances moderate speed (250ns), low VF (1.30V), and compact Micro SMA packaging-making it optimal for cost-sensitive, space-constrained 100–300 kHz SMPS where thermal management and layout density are prioritized over extreme trr reduction.
Availability
RS1JM is available at Aetrix Electronics and suitable for DC-DC converters, switching inverters, and industrial power supplies requiring stable component supply, consistent parametric performance, and RoHS/halogen-free compliance.
Supply support for RS1JM 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
Taiwan Semiconductor Corporation (TSC) is a vertically integrated analog and discrete semiconductor manufacturer headquartered in Hsinchu, Taiwan, serving global power, automotive, and industrial markets since 1979.
The RS1JM belongs to TSC's RS1xM fast recovery rectifier family, engineered specifically for high-efficiency, high-density AC-DC and DC-DC conversion in consumer, computing, and industrial power supplies.
FAQ
What is the maximum junction temperature rating for RS1JM?
The RS1JM has a maximum junction temperature (TJ) of +150°C and a minimum of –55°C. This rating is specified in the Absolute Maximum Ratings table and validated across thermal cycling and long-term life testing per JEDEC standards. Operation within this range ensures reliable performance in enclosed industrial power supplies where ambient temperatures exceed 85°C. The RS1JM must be thermally anchored to adequate PCB copper area to maintain TJ ≤ 150°C under full-load conditions.
Does RS1JM have a halogen-free construction?
Yes, the RS1JM is halogen-free in accordance with IEC 61249-2-21, and its molding compound meets UL 94V-0 flammability rating. All materials-including encapsulant, lead frame, and plating-are certified halogen-free. This compliance is documented in TSC's material declarations and applies to all RS1JM units manufactured under version B2103 and later. RS1JM meets both RoHS and halogen-free requirements for export to EU, Japan, and other regulated markets.
What is the marking code printed on the RS1JM device body?
The RS1JM is marked with "R7" on its case, as confirmed in the Absolute Maximum Ratings table of the official datasheet (Version B2103). This marking distinguishes it from RS1KM (marked "R9") and other variants in the RS1xM series. The marking is laser-etched on the cathode-end surface of the Micro SMA package and remains legible after reflow soldering and cleaning processes.
Is RS1JM suitable for use in automotive applications?
The RS1JM is not qualified to AEC-Q101 or automotive-grade reliability standards, and TSC explicitly states that its products are "not designed for use in medical, life-saving, or life-sustaining applications." While the RS1JM operates across –55°C to +150°C and meets industrial reliability requirements, it lacks automotive-specific qualification testing (e.g., HTOL, ESD, vibration). For automotive subsystems, designers should select AEC-Q101-certified alternatives unless used in non-safety-critical aftermarket accessories with full system-level validation.
What is the moisture sensitivity level (MSL) of RS1JM?
The RS1JM has a moisture sensitivity level (MSL) of Level 1 per J-STD-020, meaning it is not humidity-sensitive and may be stored indefinitely at ambient conditions without baking prior to reflow. This eliminates MSL handling requirements such as dry packing, floor life tracking, or pre-bake cycles-reducing manufacturing overhead in high-volume SMT lines. The Level 1 rating is verified through TSC's internal qualification and stated in the Features section of the official RS1JM–RS1KM datasheet.
RS1JM Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- 2-SMD, Flat Leads
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 600 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):
- 250 ns
- Current - Reverse Leakage @ Vr:
- 5 µA @ 600 V
- Capacitance @ Vr, F:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- Micro SMA
- Operating Temperature - Junction:
- -55°C ~ 150°C
RS1JM FAQ
1.How can I place an order for RS1JM through Aetrix?
Please submit a Request for Quotation (RFQ) for RS1JM 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 RS1JM reliable?
The price and inventory of RS1JM are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for RS1JM is usually 5 days.
3.What payment methods are accepted for RS1JM?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for RS1JM transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for RS1JM?
RS1JM orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your RS1JM 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 RS1JM?
For technical support, including RS1JM datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your RS1JM requirements.
6.How does Aetrix verify that RS1JM is sourced from the original manufacturer or authorized distributors?
All RS1JM 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 RS1JM meets industry standards.
7.What is the process for return or replacement of RS1JM?
All RS1JM units undergo pre-shipment inspection (PSI). If there is an issue with RS1JM, 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 RS1JM part is unused and in its original packaging.
Return procedure for RS1JM:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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