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Home > Products > Discrete Semiconductor Products > Diodes > Rectifiers > Single Diodes

Taiwan Semiconductor Corporation S1JM

Name: S1JM
Brand: Taiwan Semiconductor Corporation
SKU: S1JM
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: S1JM

Manufacturer:: Taiwan Semiconductor Corporation

Category:: Single Diodes

Package:: 2-SMD, Flat Leads

Datasheet:: S1JM.pdf

Description:: 1A, 600V, STANDARD RECOVERY RECT

Quantity:: RFQ Add To RFQ list

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Inventory:10,980

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Product details

Overview

S1JM from Taiwan Semiconductor is a 600V, 1A standard surface-mount silicon rectifier diode in Micro SMA package, featuring 1.10V max forward voltage at 1A and 780ns reverse recovery time, used for DC-DC conversion and switching-mode power supplies.

For engineers reviewing the S1JM datasheet, S1JM pinout, S1JM application, or S1JM equivalent, key selection criteria include repetitive peak reverse voltage (600V), surge current rating (20A), junction temperature range (–55°C to +175°C), thermal resistance (R_θJL = 30°C/W), and Micro SMA mechanical compatibility with automated placement.

Technical Context

The S1JM is a single-die, glass-passivated standard rectifier optimized for high-voltage, medium-current switching applications. Its 600V V_RRM, 20A I_FSM, and 780ns trr support robust operation in flyback and forward converter topologies under transient stress.

Designed for surface-mount assembly, the S1JM uses matte tin-plated leads compliant with J-STD-002 and meets JESD201 Class 2 whisker resistance. Polarity is marked by cathode band; moisture sensitivity level is J-STD-020 Level 1.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	600 V - maximum non-repetitive reverse voltage the device blocks without breakdown
I_F	1 A - continuous average forward current rating at T_A = 25°C
I_FSM	20 A - peak non-repetitive surge current (8.3 ms half-sine) the device withstands
V_F (max)	1.10 V - forward voltage drop at 1 A and 25°C, directly impacting conduction loss
t_rr	780 ns - reverse recovery time at I_F = 0.5 A, I_R = 1.0 A, I_RR = 0.25 A, critical for switching loss in SMPS
T_J (max)	+175°C - maximum junction temperature, enabling high-ambient operation in enclosed power stages
R_θJL	30°C/W - junction-to-lead thermal resistance, defining heat transfer efficiency to PCB copper

Pinout & Package

Package: Micro SMA - surface-mount, single-ended, cathode-band-marked plastic package with matte tin-plated leads; dimensions per Taiwan Semiconductor outline drawing; UL 94V-0 rated molding compound.

Pin/Terminal	Circuit Role	Design Meaning
Anode	Forward current entry terminal	Connected to lower-potential side of rectification path; requires adequate copper pour for thermal dissipation
Cathode	Forward current exit / reverse-blocking terminal	Marked by visible band; connects to output rail or switching node; defines polarity during layout

Key Features

Feature	Design Value
Glass passivated chip junction	Enhances long-term reliability and humidity resistance in industrial environments
Moisture sensitivity level 1	Enables direct placement without baking, reducing manufacturing overhead
RoHS and halogen-free compliance	Meets IEC 61249-2-21 and global environmental directives for end-product certification
Micro SMA footprint	Compatible with standard SMA pick-and-place nozzles and reflow profiles (J-STD-020)

Applications

DC–DC Converters	Switching Inverters
Use Scenario: Secondary-side rectification in isolated 48V-to-12V buck-derived converters. IC Role / Device Role / Timing Role: Standard rectifier diode conducting unidirectional current during transformer secondary voltage polarity window. Use Value: 600V V_RRM provides margin against reflected transients; 1.10V V_F limits conduction loss at 1A load.	Use Scenario: Freewheeling path in single-phase H-bridge motor inverters operating up to 400V DC bus. IC Role / Device Role / Timing Role: Passive clamp diode providing low-loss return path during PWM dead-time intervals. Use Value: 780ns t_rr minimizes reverse recovery charge injection; 20A I_FSM handles motor stall surges.
Industrial Power Supplies	LED Driver Circuits
Use Scenario: Output rectification in 24V/5A open-frame AC–DC power supplies for PLC modules. IC Role / Device Role / Timing Role: Main output rectifier converting high-frequency transformer secondary AC to regulated DC. Use Value: +175°C T_J(max) supports operation in sealed enclosures; R_θJL = 30°C/W enables thermal design with minimal copper area.	Use Scenario: Constant-current regulation path in isolated LED drivers for street lighting (input 230VAC, output 36V/700mA). IC Role / Device Role / Timing Role: High-voltage rectifier in auxiliary bias winding circuit powering control IC. Use Value: 600V V_RRM accommodates reflected spikes from primary-side MOSFET switching; cathode-band marking ensures correct orientation during automated assembly.

DC–DC Converters

Switching Inverters

Use Scenario: Secondary-side rectification in isolated 48V-to-12V buck-derived converters.

IC Role / Device Role / Timing Role: Standard rectifier diode conducting unidirectional current during transformer secondary voltage polarity window.

Use Value: 600V V_RRM provides margin against reflected transients; 1.10V V_F limits conduction loss at 1A load.

Use Scenario: Freewheeling path in single-phase H-bridge motor inverters operating up to 400V DC bus.

IC Role / Device Role / Timing Role: Passive clamp diode providing low-loss return path during PWM dead-time intervals.

Use Value: 780ns t_rr minimizes reverse recovery charge injection; 20A I_FSM handles motor stall surges.

Industrial Power Supplies

LED Driver Circuits

Use Scenario: Output rectification in 24V/5A open-frame AC–DC power supplies for PLC modules.

IC Role / Device Role / Timing Role: Main output rectifier converting high-frequency transformer secondary AC to regulated DC.

Use Value: +175°C T_J(max) supports operation in sealed enclosures; R_θJL = 30°C/W enables thermal design with minimal copper area.

Use Scenario: Constant-current regulation path in isolated LED drivers for street lighting (input 230VAC, output 36V/700mA).

IC Role / Device Role / Timing Role: High-voltage rectifier in auxiliary bias winding circuit powering control IC.

Use Value: 600V V_RRM accommodates reflected spikes from primary-side MOSFET switching; cathode-band marking ensures correct orientation during automated assembly.

Equivalent & Alternatives

The following parts are listed as comparable options for similar standard rectifier applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
STTH1L06S	600V V_RRM, 1A I_F, 1.15V V_F (max), 750ns t_rr, DO-214AC package	Same voltage/current class but larger DO-214AC footprint; higher V_F increases conduction loss	Select when legacy board space allows DO-214AC and tighter trr tolerance is required
SS16	60V V_RRM, 1A I_F, Schottky construction, 0.55V V_F (typ), no reverse recovery	Not voltage-compatible; unsuitable for >100V applications; zero t_rr eliminates switching loss	Only viable in low-voltage (<100V) designs where ultra-low V_F outweighs voltage limitation

Compared with STTH1L06S, the S1JM offers identical voltage rating but superior thermal resistance (30°C/W vs. ~45°C/W) in smaller Micro SMA; versus SS16, S1JM enables 600V operation at the cost of higher V_F and measurable t_rr.

Availability

S1JM 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-compliant sourcing.

Supply support for S1JM 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, specializing in rectifiers, TVS diodes, MOSFETs, and bipolar transistors.

The S1JM belongs to TSC's S1xM standard rectifier family, engineered for cost-effective, high-reliability AC/DC and DC/DC power conversion in consumer, industrial, and lighting applications.

FAQ

What is the maximum repetitive peak reverse voltage rating for the S1JM?

The S1JM has a maximum repetitive peak reverse voltage (V_RRM) rating of 600 V. This value is confirmed in the Absolute Maximum Ratings table of the official Taiwan Semiconductor datasheet (Version I2103). The S1JM must not be subjected to reverse voltages exceeding this limit to ensure reliable blocking behavior and prevent avalanche breakdown. Derating is recommended for high-temperature or high-humidity environments.

Does the S1JM have a specified reverse recovery time, and what test conditions apply?

Yes, the S1JM has a typical reverse recovery time (t_rr) of 780 ns. This value is measured under the conditions: forward current I_F = 0.5 A, reverse current I_R = 1.0 A, and reverse recovery current I_RR = 0.25 A. The test circuit and waveform are documented in Figure 6 of the S1GM–S1JM datasheet (Version I2103). This parameter is critical for estimating switching losses in high-frequency converters.

What is the thermal resistance from junction to lead (R_θJL) for the S1JM, and why does it matter?

The S1JM has a typical junction-to-lead thermal resistance (R_θJL) of 30°C/W. This specification quantifies how effectively heat transfers from the silicon die to the soldered lead-directly influencing PCB copper requirements and thermal derating curves. A lower R_θJL like that of the S1JM improves thermal performance over alternatives such as DO-214AC rectifiers, allowing higher ambient operation without heatsinking.

Is the S1JM compatible with lead-free reflow soldering processes?

Yes, the S1JM is compatible with lead-free reflow soldering. Its matte tin-plated leads meet J-STD-002 solderability requirements, and the Micro SMA package is rated for peak reflow temperatures up to 260°C per J-STD-020. The device is classified as Moisture Sensitivity Level 1, meaning it can be placed directly after dry-pack opening without baking-reducing process complexity in high-volume SMT lines.

How is polarity indicated on the S1JM package, and why is correct orientation essential?

Polarity on the S1JM is indicated by a visible cathode band on the body of the Micro SMA package. Correct orientation is essential because reverse installation will cause immediate forward conduction during reverse-biased conditions, leading to catastrophic failure in rectifier or freewheeling applications. The band must align with the cathode pad on the PCB layout-verified during AOI inspection and functional test.

S1JM 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:: 1.1 V @ 1 A

Speed:: Standard Recovery >500ns, > 200mA (Io)

Reverse Recovery Time (trr):: 780 ns

Current - Reverse Leakage @ Vr:: 1 µA @ 600 V

Capacitance @ Vr, F:: 5pF @ 4V, 1MHz

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: Micro SMA

Operating Temperature - Junction:: -55°C ~ 175°C

S1JM FAQ

1.How can I place an order for S1JM through Aetrix?

Please submit a Request for Quotation (RFQ) for S1JM 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 S1JM reliable?

The price and inventory of S1JM are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for S1JM is usually 5 days.

3.What payment methods are accepted for S1JM?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for S1JM transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for S1JM?

S1JM orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your S1JM 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 S1JM?

For technical support, including S1JM datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your S1JM requirements.

6.How does Aetrix verify that S1JM is sourced from the original manufacturer or authorized distributors?

All S1JM 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 S1JM meets industry standards.

7.What is the process for return or replacement of S1JM?

All S1JM units undergo pre-shipment inspection (PSI). If there is an issue with S1JM, 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 S1JM part is unused and in its original packaging.

Return procedure for S1JM:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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