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

Diodes Incorporated 1N4148W-7-F-79

Name: 1N4148W-7-F-79
Brand: Diodes Incorporated
SKU: 1N4148W-7-F-79
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 1N4148W-7-F-79

Manufacturer:: Diodes Incorporated

Category:: Single Diodes

Package:: -

Datasheet:: 1N4148W-7-F-79.pdf

Description:: DIODE GEN PURP 100V 300MA SOD123

Quantity:: RFQ Add To RFQ list

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Inventory:5,095

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Product details

Overview

1N4148W-7-F from Diodes Incorporated is a surface-mount fast-switching silicon signal diode in SOD-123 package, rated for 100 V peak repetitive reverse voltage, 300 mA forward current, and 4 ns reverse recovery time. It delivers low forward voltage (0.715 V at 1 mA), low junction capacitance (2 pF), and operates across –55 °C to +150 °C - widely used in high-speed logic clamping, waveform shaping, and digital signal routing on PCBs.

For engineers reviewing the 1N4148W-7-F datasheet, 1N4148W-7-F pinout, 1N4148W-7-F application, or 1N4148W-7-F equivalent, key selection criteria include reverse recovery speed, forward voltage consistency at low currents, thermal derating behavior, and SOD-123 footprint compatibility with automated assembly lines.

Technical Context

This diode functions as a unidirectional, low-capacitance switching element optimized for digital and high-frequency analog signal paths. Its 4 ns reverse recovery time and 2 pF junction capacitance enable reliable operation in 10–50 MHz clock line clamping and TTL/CMOS input protection circuits.

The device uses a planar epitaxial silicon structure with cathode-band polarity marking and matte tin-plated alloy-42 leads. Thermal resistance is 315 °C/W (junction-to-ambient, FR-4 board, double-sided 3 oz copper), supporting continuous operation up to 150 °C junction temperature under controlled power dissipation.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RWM	100 V - supports DC blocking and transient suppression in 24 V and 48 V industrial control signal lines
I_F	300 mA - sufficient for driving LED indicators, logic-level translation, and small-signal rectification
t_RR	4 ns - enables clean edge transitions in >25 MHz digital switching without tail current distortion
C_T	2 pF - minimizes loading on high-impedance RF detector inputs and crystal oscillator feedback paths
V_F	0.715 V @ 1 mA - ensures predictable voltage drop in precision bias networks and low-power sensor interface circuits
T_J Range	–55 °C to +150 °C - qualified for under-hood automotive modules and industrial motor drive control boards

Pinout & Package

Package: SOD-123 - surface-mount plastic case, 2.65 mm × 1.55 mm × 1.05 mm body, cathode band marking, matte tin-plated alloy-42 leads, JEDEC-compliant moisture sensitivity level 1.

Pin/Terminal	Circuit Role	Design Meaning
Anode	Forward current entry point	Connected to lower-potential node in clamping or rectification path; requires thermal relief pad per IPC-7351B
Cathode	Forward current exit / reverse-blocking terminal	Marked by band; ties to higher-potential rail or logic input; critical for ESD protection orientation

Key Features

Feature	Design Value
Fast reverse recovery	4 ns maximum - reduces switching loss and prevents false triggering in high-speed data lines
Low forward voltage	0.715 V at 1 mA - improves accuracy in precision reference clamp circuits and low-current biasing
Low junction capacitance	2 pF at 0 V - preserves signal integrity in 50 Ω RF sampling paths and crystal oscillator load networks
SOD-123 footprint	Standardized 2-pin SMT outline - compatible with pick-and-place machines and reflow profiles per J-STD-020

Applications

Digital Logic Clamping

High-Speed Signal Routing

Use Scenario: Protecting CMOS input pins from voltage overshoot during hot-plug events in FPGA I/O banks.

IC Role / Device Role / Timing Role: Fast clamping diode shunting transients to V_CC or GND before logic threshold violation.

Use Value: 4 ns t_RR and 2 pF C_T prevent signal ringback and ensure sub-10 ns response to 200 V/µs transients.

Use Scenario: Steering clock signals between multiple microcontroller peripherals without loading.

IC Role / Device Role / Timing Role: Passive OR-ing diode in multiplexed clock distribution tree.

Use Value: Low V_F variation (<0.15 V from 1–10 mA) maintains consistent timing skew across channels.

Waveform Shaping

Low-Power Sensor Biasing

Use Scenario: Converting sine wave oscillator output to square wave via clipping in analog function generators.

IC Role / Device Role / Timing Role: Precision amplitude limiter using forward conduction thresholds.

Use Value: Tight V_F tolerance (0.715 V max @ 1 mA) yields repeatable clipping levels across production lots.

Use Scenario: Providing stable bias current to photodiode amplifiers in portable gas sensors.

IC Role / Device Role / Timing Role: Constant-current source element in high-impedance feedback loop.

Use Value: –55 °C to +150 °C operating range ensures calibration stability in battery-powered field instruments.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
BAV16W-7-F	Identical electrical specs; same SOD-123 package; BAV16W has marginally tighter V_F distribution at 10 mA	No functional difference in clamping or routing; identical thermal profile and layout	Select when sourcing flexibility or dual-source qualification is required
1N4148WS-7-F	SOD-323 package (1.7 × 1.25 mm); 10% smaller footprint; same V_RWM, t_RR, and C_T	Preferred for space-constrained wearables and ultra-thin IoT modules where board area is critical	Choose only if PCB layout accommodates reduced pad pitch and thermal mass

Compared with BAV16W-7-F and 1N4148WS-7-F, the 1N4148W-7-F offers optimal balance of proven reliability, standard SOD-123 manufacturability, and thermal robustness for mid-density industrial PCBs - making it the default choice unless miniaturization or alternate V_F distribution is prioritized.

Availability

1N4148W-7-F is available at Aetrix Electronics and suitable for digital logic protection, high-speed signal routing, and low-power sensor biasing requiring stable component supply across automotive, industrial control, and consumer electronics programs.

Supply support for 1N4148W-7-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 BAV16W/1N4148W series targets general-purpose high-speed switching applications, emphasizing repeatability, automated assembly readiness, and wide-temperature performance in cost-sensitive electronics.

FAQ

Is 1N4148W-7-F AEC-Q101 qualified?

No - the 1N4148W-7-F is not AEC-Q101 qualified. Only the automotive-grade variant 1N4148WQ-7-F carries AEC-Q101 qualification, PPAP capability, and IATF 16949 manufacturing certification. Standard 1N4148W-7-F is intended for commercial and industrial applications.

What is the maximum allowable soldering temperature for SOD-123 reflow?

The SOD-123 package supports standard lead-free reflow profiles per J-STD-020. Peak temperature must not exceed 260 °C for ≤ 30 seconds, with ramp-up rate ≤ 3 °C/s and ramp-down rate ≤ 6 °C/s. Moisture sensitivity level is 1, so baking prior to reflow is not required.

Can 1N4148W-7-F replace 1N4148 through-hole diodes in existing designs?

Yes - electrically identical to legacy 1N4148, but requires PCB redesign for SOD-123 footprint. Key differences: lower thermal resistance (315 °C/W vs ~500 °C/W for DO-35), no axial leads, and automated placement compatibility. Layout must account for reduced thermal mass and different pad geometry.

Does this diode support bidirectional ESD protection?

No - the 1N4148W-7-F is a unidirectional silicon switching diode. It provides effective clamping only in forward conduction or reverse breakdown (above 100 V). For bidirectional ESD protection, dedicated TVS diodes such as D1213A-03LP or PUSB3FR4 are required.

1N4148W-7-F-79 Specifications

Product attributes: Attribute value

Manufacturer:: Diodes Incorporated

Series:: -

Package/Case:: -

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Technology:: -

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

Current - Average Rectified (Io):: -

Voltage - Forward (Vf) (Max) @ If:: -

Speed:: -

Reverse Recovery Time (trr):: -

Current - Reverse Leakage @ Vr:: -

Capacitance @ Vr, F:: -

Grade:: -

Qualification:: -

Mounting Type:: -

Supplier Device Package:: -

Operating Temperature - Junction:: -

1N4148W-7-F-79 FAQ

1.How can I place an order for 1N4148W-7-F-79 through Aetrix?

Please submit a Request for Quotation (RFQ) for 1N4148W-7-F-79 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 1N4148W-7-F-79 reliable?

The price and inventory of 1N4148W-7-F-79 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N4148W-7-F-79 is usually 5 days.

3.What payment methods are accepted for 1N4148W-7-F-79?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N4148W-7-F-79 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 1N4148W-7-F-79?

1N4148W-7-F-79 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 1N4148W-7-F-79 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 1N4148W-7-F-79?

For technical support, including 1N4148W-7-F-79 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N4148W-7-F-79 requirements.

6.How does Aetrix verify that 1N4148W-7-F-79 is sourced from the original manufacturer or authorized distributors?

All 1N4148W-7-F-79 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 1N4148W-7-F-79 meets industry standards.

7.What is the process for return or replacement of 1N4148W-7-F-79?

All 1N4148W-7-F-79 units undergo pre-shipment inspection (PSI). If there is an issue with 1N4148W-7-F-79, 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 1N4148W-7-F-79 part is unused and in its original packaging.

Return procedure for 1N4148W-7-F-79:

1.Submit a request within 90 days.

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

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