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

Diodes Incorporated S1MB-13

Name: S1MB-13
Brand: Diodes Incorporated
SKU: S1MB-13
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: S1MB-13

Manufacturer:: Diodes Incorporated

Category:: Single Diodes

Package:: DO-214AA, SMB

Datasheet:: S1MB-13.pdf

Description:: DIODE GEN PURP 1KV 1A SMB

Quantity:: RFQ Add To RFQ list

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Inventory:6,084

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Product details

Overview

S1MB-13 from Diodes Incorporated is a 1.0A surface-mount glass passivated silicon rectifier diode in SMB package, rated for 1000V peak repetitive reverse voltage (V_RRM), with 30A non-repetitive surge capability and 1.1V max forward voltage at 1.0A. It serves as a primary AC/DC input stage rectifier in offline power supplies for industrial control modules.

For engineers reviewing the S1MB-13 datasheet, S1MB-13 pinout, S1MB-13 application, or S1MB-13 equivalent, this device is selected for high-voltage, medium-current bridge or single-diode rectification where thermal reliability under transient surge and RoHS-compliant lead-free assembly are critical design requirements.

Technical Context

This SMB-packaged rectifier operates as a unidirectional current switch in single-phase half-wave or full-wave bridge configurations. Its glass passivated junction ensures stable leakage performance up to +125°C, with reverse recovery time (t_rr) of 1.8–3.0 μs enabling use in 50/60 Hz and low-frequency switching applications.

The device exhibits 10 pF typical junction capacitance at 4V reverse bias and 1.0 MHz, supporting predictable EMI behavior in EMI filter input stages. Thermal resistance from junction to terminal is 30°C/W when mounted on 5.0 mm² copper pads, directly informing heatsinking decisions in compact power designs.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	1000 V - Withstands peak line transients in 230VAC mains applications without breakdown
I_O	1.0 A @ T_T = +100°C - Continuous DC output current rating under real-world board-level thermal conditions
I_FSM	30 A (8.3 ms half-sine) - Survives cold-start inrush and lightning-induced surges in unprotected AC inputs
V_FM	≤1.1 V @ I_F = 1.0 A - Limits conduction loss to ≤1.1 W per diode in linear rectifier operation
t_rr	1.8–3.0 μs - Enables reliable operation in 50/60 Hz transformer-coupled supplies without excessive switching loss
R_θJT	30 °C/W - Quantifies thermal path efficiency from die to PCB pad; used to calculate junction temperature rise
C_T	10 pF @ 1 MHz, 4 V - Defines capacitive loading on AC line side, critical for EMI filter design

Pinout & Package

SMB package: molded plastic case (UL 94V-0), cathode indicated by band or notch on top surface; terminals are matte tin-plated for lead-free soldering per MIL-STD-202, Method 208.

Pin/Terminal	Circuit Role	Design Meaning
Anode	Current entry point during forward conduction	Connected to AC source or transformer secondary winding; must withstand full surge current
Cathode	Current exit point during forward conduction	Connected to bulk capacitor or load return; polarity marking ensures correct orientation in bridge layout

Key Features

Feature	Design Value
Glass passivated die construction	Eliminates moisture-induced degradation and improves long-term leakage stability at high temperature
30A surge rating (8.3 ms)	Supports EN 61000-4-5 Level 3 surge immunity without external clamping in Class II power supplies
Lead-free, halogen-free, antimony-free	Meets IPC-1752A Tier 1 reporting requirements and EU RoHS 2 (2011/65/EU) compliance out-of-box
SMB package footprint	Enables automated pick-and-place placement and reflow compatibility with standard 0.5 mm pitch stencil apertures

Applications

Industrial AC/DC Power Supplies

LED Driver Input Rectification

Use Scenario: 230VAC-fed DIN-rail power supply delivering 24V/1A to PLC I/O modules.

IC Role / Device Role / Timing Role: Primary-side rectifier in single-phase bridge configuration converting AC line to DC bus.

Use Value: 1000V V_RRM provides 2× safety margin over 230VAC peak (325V), ensuring robustness against line surges.

Use Scenario: Off-line LED driver powering streetlight arrays with passive PFC.

IC Role / Device Role / Timing Role: Input rectifier feeding bulk capacitor and valley-fill PFC stage.

Use Value: 1.1V V_FM limits conduction loss to <1.1W at 1A, reducing thermal stress in sealed outdoor enclosures.

Appliance Motor Control Boards

Surge-Protected AC Input Modules

Use Scenario: Washing machine main control board with universal motor drive and microcontroller.

IC Role / Device Role / Timing Role: Half-wave rectifier supplying auxiliary 12V rail for logic and gate drivers.

Use Value: 30A I_FSM tolerates compressor startup current spikes without degradation.

Use Scenario: DIN-mount surge protection device with MOV + series rectifier for telecom AC input.

IC Role / Device Role / Timing Role: Series-blocking diode preventing reverse current flow during MOV clamping events.

Use Value: Glass passivation ensures IR remains ≤100 µA at +125°C, maintaining blocking integrity during sustained overvoltage.

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-voltage rectifier applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
STTH1L06S	600V V_RRM, 1.05V V_FM, TO-277 package	Limited to 230VAC systems requiring lower voltage margin	Select when cost sensitivity outweighs need for 1000V surge headroom
ON Semi MUR160	600V V_RRM, 50 ns t_rr, DO-41 through-hole	Not suitable for automated SMT production; faster recovery but lower voltage rating	Choose only for legacy through-hole designs where layout change is prohibitive

Compared with STTH1L06S and MUR160, S1MB-13 uniquely delivers 1000V standoff in an SMB SMT package-enabling compact, surge-resilient rectification in new industrial designs without compromising assembly automation or thermal derating.

Availability

S1MB-13 is available at Aetrix Electronics and suitable for industrial AC/DC power supplies, LED driver input rectification, appliance motor control boards, and surge-protected AC input modules requiring stable component supply across multi-year production cycles.

Supply support for S1MB-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, headquartered in Plano, Texas, serving industrial, computing, consumer, and communications markets since 1960.

The S1x/B rectifier series targets cost-sensitive, high-reliability AC front-end applications, emphasizing surge resilience, RoHS compliance, and automated manufacturability in SMB/SMA packages.

FAQ

What is the maximum operating temperature for S1MB-13?

The S1MB-13 has an operating junction temperature range of –65°C to +150°C. Its average forward current rating drops to 1.0A only at terminal temperature (T_T) = +100°C; derating curves show 0.4A at +125°C ambient with standard PCB mounting. Thermal design must account for R_θJT = 30°C/W and actual copper pad area.

Is S1MB-13 suitable for use in a full-wave bridge configuration?

Yes-S1MB-13 is explicitly rated for single-phase, half-wave or full-wave rectification with resistive or inductive loads. Four units can form a discrete bridge rectifier. For capacitance-loaded outputs, Diodes Incorporated specifies a 20% current derating to prevent overheating due to peak charging currents.

Does S1MB-13 meet automotive AEC-Q101 qualification?

No-S1MB-13 is commercial-grade (not AEC-Q101 qualified). It carries no automotive stress test documentation, and its datasheet specifies only industrial-grade reliability testing (e.g., J-STD-020 moisture sensitivity level 1). For automotive applications, Diodes' AEC-Q101-qualified SMB rectifiers such as SB1100B should be considered instead.

How does the SMB package of S1MB-13 compare to SMA in thermal performance?

S1MB-13 (SMB) has identical R_θJT = 30°C/W as S1MA-13 (SMA) when mounted on equivalent 5.0 mm² copper pads. However, SMB's larger body (3.30–3.94 mm × 4.06–4.57 mm vs. SMA's 2.29–2.92 mm × 4.00–4.60 mm) provides greater thermal mass and slightly improved surge energy absorption, though both require identical PCB layout rules per AP02001.

S1MB-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):: 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):: 3 µs

Current - Reverse Leakage @ Vr:: 5 µA @ 1000 V

Capacitance @ Vr, F:: 10pF @ 4V, 1MHz

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: SMB

Operating Temperature - Junction:: -65°C ~ 150°C

S1MB-13 FAQ

1.How can I place an order for S1MB-13 through Aetrix?

Please submit a Request for Quotation (RFQ) for S1MB-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 S1MB-13 reliable?

The price and inventory of S1MB-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for S1MB-13 is usually 5 days.

3.What payment methods are accepted for S1MB-13?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for S1MB-13 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for S1MB-13?

S1MB-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your S1MB-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 S1MB-13?

For technical support, including S1MB-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your S1MB-13 requirements.

6.How does Aetrix verify that S1MB-13 is sourced from the original manufacturer or authorized distributors?

All S1MB-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 S1MB-13 meets industry standards.

7.What is the process for return or replacement of S1MB-13?

All S1MB-13 units undergo pre-shipment inspection (PSI). If there is an issue with S1MB-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 S1MB-13 part is unused and in its original packaging.

Return procedure for S1MB-13:

1.Submit a request within 90 days.

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

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