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Diodes Incorporated S1AB-13
- Part No.:
- S1AB-13
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
S1AB-13.pdf
- Description:
- DIODE GEN PURP 50V 1A SMB
- Quantity:
- Payment:
- Shipping:
Inventory:2,975
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Product details
Overview
S1AB-13 from Diodes Incorporated is a surface-mount, glass-passivated general-purpose silicon rectifier diode in SMB package, rated for 100 V peak repetitive reverse voltage (VRRM), 1.0 A average forward current (IO) at 100°C terminal temperature, and 30 A non-repetitive surge current (IFSM). It delivers low forward voltage drop (≤1.1 V @ 1.0 A) and fast recovery (trr ≤ 3.0 μs), making it suitable for AC/DC input rectification in compact power supplies and DC-DC converter front-ends.
For engineers reviewing the S1AB-13 datasheet, S1AB-13 pinout, S1AB-13 application, or S1AB-13 equivalent, key selection criteria include its SMB footprint compatibility, thermal resistance (RθJT = 30 °C/W), reverse leakage performance (≤5.0 μA @ 25°C), and RoHS-compliant lead-free matte tin plating - all critical for high-volume, thermally constrained industrial and consumer power designs.
Technical Context
This SMB-packaged rectifier operates as a unidirectional current-conducting device in single-phase, half-wave configurations with resistive or inductive loads. Its glass-passivated die construction ensures stable junction integrity under thermal cycling and humidity exposure, while the 30 A surge rating supports transient line-event tolerance without derating in standard 60 Hz mains applications.
The device exhibits typical reverse recovery time of 1.8 μs (max 3.0 μs) under defined test conditions (IF = 0.5 A, IR = 1.0 A, IRR = 0.25 A), and junction-to-terminal thermal resistance of 30 °C/W when mounted on 5.0 mm² copper pads - enabling predictable thermal design in PCB-limited space.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 100 V - Maximum peak reverse voltage the diode blocks reliably without breakdown; defines safe AC input voltage headroom. |
| IO @ TT=100°C | 1.0 A - Continuous forward current capability with 100°C terminal temperature; sets minimum heatsinking requirement. |
| VFM @ IF=1.0A | ≤1.1 V - Forward voltage drop at rated current; directly impacts conduction loss and thermal load in rectifier stage. |
| IFSM (8.3ms) | 30 A - Non-repetitive surge current handling; enables robustness against inrush and lightning-induced transients. |
| trr | ≤3.0 μs - Reverse recovery time; limits switching losses and EMI generation in higher-frequency rectification. |
| RθJT | 30 °C/W - Junction-to-terminal thermal resistance; used to calculate junction temperature rise above PCB pad temperature. |
| IRM @ 25°C | ≤5.0 μA - Peak reverse leakage at rated blocking voltage and room temperature; affects standby power in offline converters. |
Pinout & Package
S1AB-13 uses the SMB (DO-214AA) surface-mount plastic package with cathode band polarity marking. The two-terminal device has no internal connections beyond anode and cathode; mounting requires compliant solder profile per MIL-STD-202, Method 208.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to AC source or transformer secondary; must withstand full surge current and reverse voltage stress. |
| Cathode | Forward current exit point | Marked by band; ties to output capacitor or downstream regulator; carries full load current and defines output reference node. |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated die | Eliminates need for hermetic sealing while maintaining >1000-hour HAST reliability; reduces cost vs. ceramic-packaged alternatives. |
| Lead-free matte tin plating | Enables Pb-free reflow assembly without solderability degradation; complies with RoHS 2 (2011/65/EU) and JEDEC J-STD-020 Level 1 moisture sensitivity. |
| UL 94V-0 molded plastic case | Provides flame-retardant housing essential for safety-certified power adapters and industrial equipment enclosures. |
| Low RθJT (30 °C/W) | Allows direct thermal coupling to PCB copper; eliminates need for discrete heatsinks in <5 W output applications. |
Applications
| AC/DC Wall Adapters | USB Power Delivery Modules |
|---|---|
Use Scenario: Rectifying 50/60 Hz AC input after transformer step-down in Class II isolated power supplies. IC Role / Device Role / Timing Role: General-purpose rectifier converting AC to pulsating DC prior to bulk capacitance filtering. Use Value: 1.0 A IO rating and 100 V VRRM support universal input (90–264 VAC) designs with margin; SMB footprint saves board area vs. axial leads. | Use Scenario: Input-stage rectification in compact 5–20 W USB-C PD power modules with tight thermal constraints. IC Role / Device Role / Timing Role: Unidirectional current path for bridge or single-diode configuration feeding synchronous buck controller. Use Value: Low VFM (≤1.1 V) minimizes conduction loss at 1 A, improving efficiency; 30 °C/W RθJT enables thermal management via PCB copper alone. |
| Industrial Sensor Power Supplies | LED Driver Input Stages |
Use Scenario: Providing isolated DC bias for 4–20 mA loop-powered sensors in factory automation systems. IC Role / Device Role / Timing Role: Primary-side rectifier in flyback-derived auxiliary supply; handles intermittent surges from relay coil back-EMF. Use Value: 30 A IFSM rating absorbs inductive kick without failure; glass passivation ensures long-term stability in humid industrial environments. | Use Scenario: Bridge rectification in constant-current LED drivers for commercial lighting fixtures. IC Role / Device Role / Timing Role: One leg of full-wave bridge converting AC line to DC bus for buck/boost LED controller IC. Use Value: Fast trr (≤3.0 μs) reduces switching noise coupled into sensitive current-sense paths; RoHS/Green compliance meets EU lighting directives. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar general-purpose rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ON Semiconductor MMBD7000LT1G | Lower VRRM (100 V same), but lower IO (200 mA), smaller SOT-23 package, higher VFM (1.25 V @ 100 mA). | Not suitable for 1 A continuous loads; limited to signal-level or low-power bias applications. | Select only if space is critical and current demand is ≤200 mA. |
| Vishay VS-1N4007TR | Higher VRRM (1000 V), axial lead DO-41 package, same 1 A IO, higher VFM (1.1 V @ 30 mA), no RoHS/Green compliance. | Requires through-hole assembly and larger board area; unsuitable for automated SMT lines. | Choose only for legacy repair or high-voltage legacy designs where SMB footprint is not required. |
Compared with MMBD7000LT1G and VS-1N4007TR, S1AB-13 uniquely balances 1 A current capability, SMB SMT compatibility, RoHS/Green compliance, and 100 V blocking in a single industry-standard package - making it optimal for new-design, high-volume, thermally constrained AC/DC conversion.
Availability
S1AB-13 is available at Aetrix Electronics and suitable for AC/DC wall adapters, USB power delivery modules, and industrial sensor power supplies requiring stable component supply, consistent parametric performance, and full RoHS/Green compliance across production batches.
Supply support for S1AB-13 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, specializing in high-reliability, cost-optimized components for power management, signal integrity, and protection applications.
S1AB-13 belongs to the S1A/B–S1M/B family of surface-mount glass-passivated rectifiers designed specifically for high-efficiency, automated-assembly power conversion in consumer, industrial, and computing end-equipment.
FAQ
What is the maximum operating temperature for S1AB-13?
The S1AB-13 has an operating junction and storage temperature range of –65°C to +150°C. Its 1.0 A average forward current rating is specified at a terminal temperature of +100°C, meaning the PCB copper pad must be maintained at or below this temperature under full load to meet datasheet performance guarantees.
Is S1AB-13 compatible with lead-free reflow processes?
Yes. S1AB-13 features matte tin lead-free plating and is qualified per JEDEC J-STD-020 Level 1 moisture sensitivity. It supports standard Pb-free reflow profiles up to 260°C peak temperature, with no pre-bake required, and meets MIL-STD-202, Method 208 solderability requirements.
How does S1AB-13 differ from S1A-13?
S1AB-13 uses the larger SMB (DO-214AA) package with higher thermal mass and 30 °C/W RθJT, while S1A-13 uses the smaller SMA (DO-214AC) package with 40 °C/W RθJT. Both share identical electrical ratings (100 V VRRM, 1.0 A IO), but S1AB-13 offers better thermal performance and surge handling due to its larger copper interface area.
Can S1AB-13 be used in full-wave bridge configurations?
Yes. S1AB-13 is commonly used as one quadrant in discrete full-wave bridge rectifiers. Its 100 V VRRM rating supports use in 120 VAC applications (peak ~170 V) only when paired with appropriate voltage derating or snubbing; for 230 VAC systems, S1J-13 (600 V) or higher-rated variants are recommended.
S1AB-13 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- DO-214AA, SMB
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 50 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):
- 3 µs
- Current - Reverse Leakage @ Vr:
- 5 µA @ 50 V
- Capacitance @ Vr, F:
- 10pF @ 4V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SMB
- Operating Temperature - Junction:
- -65°C ~ 150°C
S1AB-13 FAQ
1.How can I place an order for S1AB-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for S1AB-13 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 S1AB-13 reliable?
The price and inventory of S1AB-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for S1AB-13 is usually 5 days.
3.What payment methods are accepted for S1AB-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for S1AB-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for S1AB-13?
S1AB-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your S1AB-13 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 S1AB-13?
For technical support, including S1AB-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your S1AB-13 requirements.
6.How does Aetrix verify that S1AB-13 is sourced from the original manufacturer or authorized distributors?
All S1AB-13 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 S1AB-13 meets industry standards.
7.What is the process for return or replacement of S1AB-13?
All S1AB-13 units undergo pre-shipment inspection (PSI). If there is an issue with S1AB-13, 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 S1AB-13 part is unused and in its original packaging.
Return procedure for S1AB-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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