Diodes Incorporated SD101CW-7-F

Overview

SD101CW-7-F from Diodes Incorporated is a Schottky barrier switching diode in SOD-123 package, rated for 40 V peak repetitive reverse voltage, 15 mA forward continuous current, and 1.0 ns reverse recovery time. It delivers low forward voltage drop (0.39 V @ 1.0 mA), negligible reverse recovery, and 2.2 pF total capacitance at 0 V - ideal for high-speed signal clamping and RF detector circuits.

For engineers reviewing the SD101CW-7-F datasheet, SD101CW-7-F pinout, SD101CW-7-F application, or SD101CW-7-F equivalent, key selection criteria include its 40 V blocking capability, sub-0.4 V forward drop at low current, ultrafast 1 ns trr, RoHS-compliant green construction, and SOD-123 thermal performance (RθJA = 300 °C/W on FR-4).

Technical Context

This Schottky diode uses guard ring construction to enhance transient robustness and suppress leakage under high dv/dt conditions. Its metal–semiconductor junction enables near-zero minority carrier storage, eliminating reverse recovery tail and enabling operation up to UHF frequencies.

The device operates across –65 °C to +125 °C with stable 200 nA max reverse current at VR = 30 V and maintains <2.2 pF capacitance from 0–30 V reverse bias - critical for impedance matching in RF front-end detection and sampling applications.

Key Specifications

Pinout & Package

Package: SOD-123 - surface-mount plastic case (UL 94V-0), 0.01 g weight, cathode indicated by band. Dimensions: 3.7 mm length × 1.2 mm width × 0.9 mm height (max), with 0.7 mm lead pitch.

Key Features

Applications

Equivalent & Alternatives

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

Compared with BAT54C-7-F and NSR0230HT1G, SD101CW-7-F offers balanced 40 V rating, 2.2 pF capacitance, and 0.39 V VF - making it optimal for sub-1 GHz RF detection and general-purpose low-current clamping where moderate speed and robustness are prioritized over extreme frequency or ultra-low VF.

Availability

SD101CW-7-F is available at Aetrix Electronics and suitable for RF detector modules, high-speed logic protection circuits, low-power sensor interfaces, and sample-and-hold bias networks requiring stable component supply and consistent SOD-123 thermal behavior.

Supply support for SD101CW-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, specializing in high-reliability, industry-standard components for power management, signal integrity, and protection applications.

SD101CW-7-F belongs to Diodes' legacy Schottky switching diode product line, engineered for cost-sensitive, high-volume applications demanding fast switching, low VF, and robust transient tolerance in compact SMD packages.

FAQ

What is the maximum reverse voltage SD101CW-7-F can block continuously?

The SD101CW-7-F has a peak repetitive reverse voltage (VRRM) rating of 40 V. This is the maximum instantaneous reverse voltage the device can block repeatedly without breakdown, verified under standard test conditions (IR = 10 µA). It must not be exceeded in continuous DC or peak AC applications.

Does SD101CW-7-F require derating at elevated ambient temperatures?

Yes. The device's 400 mW power dissipation rating applies only at TA = 25 °C. Above that, derating follows the curve in Figure 4: linear reduction to zero at 150 °C, with a slope of –3.33 mW/°C (based on RθJA = 300 °C/W). Derating is mandatory for reliable operation above 25 °C ambient.

Is SD101CW-7-F suitable for use in 2.4 GHz WiFi receiver front-ends?

No. With 2.2 pF junction capacitance and 1.0 ns trr, SD101CW-7-F is optimized for ≤1 GHz applications like 868 MHz ISM or AM broadcast detection. For 2.4 GHz WiFi, devices with <0.5 pF CT (e.g., NSR0230HT1G) are required to maintain impedance match and minimize insertion loss.

How is polarity identified on the SD101CW-7-F package?

Polarity is marked by a cathode band on the SOD-123 body - a visible molded stripe near one end. Per Diodes' marking specification, the banded end is the cathode; the opposite end is the anode. This matches standard diode schematic symbol orientation and PCB silkscreen conventions.