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

Diodes Incorporated 1N4148WS-13-F

Name: 1N4148WS-13-F
Brand: Diodes Incorporated
SKU: 1N4148WS-13-F
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 1N4148WS-13-F

Manufacturer:: Diodes Incorporated

Category:: Single Diodes

Package:: SC-76, SOD-323

Datasheet:: 1N4148WS-13-F.pdf

Description:: DIODE GEN PURP 75V 150MA SOD323

Quantity:: RFQ Add To RFQ list

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Inventory:11,783

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Product details

Overview

1N4148WS-13-F from Diodes Incorporated is a surface-mount fast-switching silicon signal diode in SOD323 package, rated for 75 V peak repetitive reverse voltage, 300 mA forward surge current, and 4.0 ns reverse recovery time. It serves as a general-purpose switching element in high-speed digital logic interfaces, clamp protection circuits, and waveform shaping stages in industrial control and consumer electronics.

For engineers reviewing the 1N4148WS-13-F datasheet, 1N4148WS-13-F pinout, 1N4148WS-13-F application, or 1N4148WS-13-F equivalent, key selection criteria include reverse recovery time under 4.0 ns, low junction capacitance (2.0 pF at 0 V), thermal resistance of 625 °C/W on FR-4, and compatibility with automated SMT assembly for space-constrained PCBs.

Technical Context

This diode operates as a unidirectional PN-junction rectifier optimized for fast transient response rather than power handling. Its design emphasizes low stored charge and minimal minority-carrier lifetime to achieve sub-4 ns t_RR, enabling reliable operation in 10–50 MHz clocked switching nodes and ESD-sensitive signal paths.

It features a cathode-banded polarity marking, matte tin-plated alloy-42 leadframe for solderability per MIL-STD-202, and moisture sensitivity level 1 per J-STD-020-enabling uncomplicated reflow without baking. The SOD323 package supports high-density routing with 0.30 mm lead width and 1.70 mm body width.

Key Specifications

Parameter	Value and Actual Design Meaning
Reverse Recovery Time	4.0 ns - Enables clean edge transitions in >10 MHz digital signal routing without tail current distortion
Peak Repetitive Reverse Voltage	75 V - Supports rail-to-rail clamping in 5 V, 12 V, and 24 V logic and interface circuits
Forward Voltage @ 10 mA	0.715 V max - Minimizes conduction loss in low-power signal steering and level-shifting paths
Total Capacitance @ 0 V	2.0 pF - Reduces capacitive loading on high-impedance nodes such as oscillator feedback or ADC input buffers
Thermal Resistance θ_JA	625 °C/W - Requires minimal copper area (1 in², 2 oz) for safe 200 mW dissipation at +25°C ambient
Operating Temperature Range	−55 °C to +150 °C - Validated for use in automotive engine bays and industrial PLC modules

Pinout & Package

Package: SOD323 - ultra-compact surface-mount plastic case (1.30 × 1.70 × 0.90 mm), cathode band marked on top surface, matte tin-plated terminals, UL 94V-0 rated molding compound.

Pin/Terminal	Circuit Role	Design Meaning
Anode	Current entry terminal during forward bias	Connected to lower-potential node (e.g., ground side of pull-up, source of clamp)
Cathode	Current exit terminal during forward bias; marked with band	Connected to higher-potential node (e.g., signal line, V_CC side of clamp)

Key Features

Feature	Design Value
Fast switching speed	4.0 ns t_RR enables use in 10–50 MHz clock distribution and data line termination
Small footprint	SOD323 package occupies <1.5 mm² board area-ideal for wearables and miniaturized IoT sensors
Lead-free & RoHS 3 compliant	No intentionally added lead, Br/Cl <900 ppm, Sb <1000 ppm-meets EU and global environmental mandates
Low leakage at high temp	IR ≤ 30 nA at VR = 20 V and TJ = +150°C-ensures stable bias in thermally stressed environments

Applications

Digital Logic Clamping

ESD Protection Interface

Use Scenario: Clamp overshoot on 3.3 V UART TX lines exposed to inductive coupling in motor drive PCBs.

IC Role / Device Role / Timing Role: Fast-turn-on shunt diode limiting voltage excursions to <4.0 V during transients.

Use Value: 4.0 ns t_RR prevents latch-up in connected MCU I/O pins; 2.0 pF capacitance avoids signal integrity degradation at 1 Mbps.

Use Scenario: Secondary-level ESD suppression on USB 2.0 D+ and D− lines before TVS array input.

IC Role / Device Role / Timing Role: Low-capacitance steering diode diverting sub-100 ns HBM pulses to ground.

Use Value: 2.0 pF CT ensures <0.1 UI jitter at 480 Mbps; 75 V V_RWM withstands system-level surge tests up to ±8 kV contact discharge.

Waveform Shaping Circuit

High-Speed Level Translation

Use Scenario: Edge sharpening of slow-rising 5 V microcontroller reset signals feeding FPGA configuration pins.

IC Role / Device Role / Timing Role: AC-coupled clipping diode removing DC offset while preserving rise/fall fidelity.

Use Value: Sub-100 ps delay skew between anode/cathode paths preserves timing margin; 0.715 V V_F minimizes threshold shift across temperature.

Use Scenario: Bidirectional level translation between 1.8 V I²C master and 5 V sensor slave using back-to-back configuration.

IC Role / Device Role / Timing Role: Low-V_F, low-C_T passive translator enabling 100 kHz–400 kHz bus operation.

Use Value: 2.0 pF capacitance prevents bus rise-time degradation; 300 mA I_FM supports peak sink currents during arbitration pulses.

Equivalent & Alternatives

The following parts are listed as comparable options for similar fast-switching diode applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
BAV16WS-13-F	Identical SOD323 package, same t_RR (4.0 ns), but V_RWM = 85 V and V_F = 0.855 V @ 10 mA	Higher reverse rating suits 24 V industrial IO modules; slightly higher V_F increases conduction loss in battery-powered systems	Select when >75 V blocking is required and 0.14 V higher forward drop is acceptable
1N4148W-7-F	SOD123 package (larger: 2.7 × 1.6 mm), same electrical specs, but R_θJA = 400 °C/W and MSL level 1 unchanged	Better thermal performance allows higher continuous IF in compact power supplies; less suitable for ultra-dense RF layouts	Choose when board space permits larger footprint and thermal management priority exceeds miniaturization

Compared with BAV16WS-13-F and 1N4148W-7-F, the 1N4148WS-13-F delivers optimal balance of size, speed, and manufacturability for high-volume SMT designs where 75 V blocking and 4.0 ns t_RR are sufficient and board area is constrained below 1.5 mm².

Availability

1N4148WS-13-F is available at Aetrix Electronics and suitable for industrial automation controllers, consumer audio DAC interfaces, and medical sensor signal conditioning requiring stable component supply and full RoHS 3 compliance.

Supply support for 1N4148WS-13-F 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.

The 1N4148WS series belongs to Diodes' general-purpose fast-switching diode product line, engineered specifically for high-reliability, high-volume SMT applications demanding consistent t_RR, low C_T, and robust process-controlled parametric stability.

FAQ

Is the 1N4148WS-13-F qualified for automotive applications?

No-the standard 1N4148WS-13-F is not AEC-Q101 qualified. For automotive use, select the 1N4148WSQ-13-F variant, which is manufactured in IATF16949-certified facilities, PPAP-capable, and explicitly qualified to AEC-Q101 standards for stress testing and change control.

What is the maximum continuous forward current rating?

The maximum average rectified output current (I_O) is 150 mA at +25°C ambient. Derating is required above +25°C per the published power derating curve: at +100°C ambient, the usable I_O drops to approximately 60 mA due to thermal limits imposed by the 625 °C/W θ_JA.

Can this diode replace a 1N4148 through-hole part in existing designs?

Yes-electrically identical to legacy 1N4148, but the SOD323 package requires updated PCB footprints and reflow profiles. Pin-to-pin replacement is not mechanical; the SOD323 has 0.7 mm lead pitch vs. axial 1N4148's 5 mm lead spacing. Layout redesign and solder paste optimization are necessary for successful migration.

Does the 1N4148WS-13-F have a specified junction-to-case thermal resistance?

No-only junction-to-ambient thermal resistance (R_θJA = 625 °C/W) is specified, measured on a standardized FR-4 board with 1 in², 2 oz copper pad. Junction-to-case (R_θJC) is not published in DS30097 Rev. 29-2 and cannot be derived without package-specific thermal modeling or test data.

1N4148WS-13-F Specifications

Product attributes: Attribute value

Manufacturer:: Diodes Incorporated

Series:: -

Package/Case:: SC-76, SOD-323

Packaging:: Tape & Reel (TR)

Product Status:: Active

Technology:: Standard

Voltage - DC Reverse (Vr) (Max):: 75 V

Current - Average Rectified (Io):: 150mA

Voltage - Forward (Vf) (Max) @ If:: 1.25 V @ 150 mA

Speed:: Small Signal =< 200mA (Io), Any Speed

Reverse Recovery Time (trr):: 4 ns

Current - Reverse Leakage @ Vr:: 1 µA @ 75 V

Capacitance @ Vr, F:: 2pF @ 0V, 1MHz

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: SOD-323

Operating Temperature - Junction:: 150°C (Max)

1N4148WS-13-F FAQ

1.How can I place an order for 1N4148WS-13-F through Aetrix?

Please submit a Request for Quotation (RFQ) for 1N4148WS-13-F 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 1N4148WS-13-F reliable?

The price and inventory of 1N4148WS-13-F are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N4148WS-13-F is usually 5 days.

3.What payment methods are accepted for 1N4148WS-13-F?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N4148WS-13-F transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 1N4148WS-13-F?

1N4148WS-13-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 1N4148WS-13-F 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 1N4148WS-13-F?

For technical support, including 1N4148WS-13-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N4148WS-13-F requirements.

6.How does Aetrix verify that 1N4148WS-13-F is sourced from the original manufacturer or authorized distributors?

All 1N4148WS-13-F 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 1N4148WS-13-F meets industry standards.

7.What is the process for return or replacement of 1N4148WS-13-F?

All 1N4148WS-13-F units undergo pre-shipment inspection (PSI). If there is an issue with 1N4148WS-13-F, 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 1N4148WS-13-F part is unused and in its original packaging.

Return procedure for 1N4148WS-13-F:

1.Submit a request within 90 days.

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

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