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

Diodes Incorporated SD101CWS-7

Name: SD101CWS-7
Brand: Diodes Incorporated
SKU: SD101CWS-7
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: SD101CWS-7

Manufacturer:: Diodes Incorporated

Category:: Single Diodes

Package:: SC-76, SOD-323

Datasheet:: SD101CWS-7.pdf

Description:: DIODE SCHOTTKY 40V 15MA SOD323

Quantity:: RFQ Add To RFQ list

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Inventory:4,383

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Product details

Overview

SD101CWS-7 from Diodes Incorporated is a surface-mount Schottky barrier diode in SOD323 package, rated for 40 V peak repetitive reverse voltage, 0.39 V forward voltage at 1.0 mA, and 2.2 pF total capacitance at 0 V. It delivers negligible reverse recovery time (1.0 ns) and low leakage (200 nA at 30 V), enabling high-speed signal clamping and RF detector applications in space-constrained portable electronics.

For engineers reviewing the SD101CWS-7 datasheet, SD101CWS-7 pinout, SD101CWS-7 application, or SD101CWS-7 equivalent, key selection criteria include its 40 V blocking rating, sub-0.4 V forward drop at low current, ultra-low capacitance, and SOD323 footprint compatibility with high-density PCB layouts in battery-powered and wireless sensor designs.

Technical Context

This Schottky diode uses guard ring construction to enhance transient immunity and suppress leakage under reverse bias. Its metal–semiconductor junction enables near-zero minority carrier storage, resulting in 1.0 ns reverse recovery time-critical for RF envelope detection and high-frequency rectification up to ~1 GHz.

The device operates across –65 °C to +125 °C, with thermal resistance of 625 °C/W (junction-to-ambient) on FR-4 board, and dissipates up to 200 mW. Its 0.004 g mass and 2.7 mm × 1.3 mm SOD323 outline support miniaturized wearable and IoT endpoint designs requiring minimal parasitic loading.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RWM	40 V - Maximum DC blocking voltage before significant leakage; sets upper limit for signal swing in clamp/protect circuits
V_F @ 1.0 mA	0.39 V - Low forward threshold enables efficient signal detection at microamp-level input currents
C_T @ 0 V	2.2 pF - Ultra-low junction capacitance preserves high-frequency signal integrity in RF detector paths
t_RR	1.0 ns - Near-instantaneous turn-off supports >500 MHz switching without tail current distortion
I_R @ 30 V	200 nA - Minimal reverse leakage ensures stable DC bias points in precision analog front-ends
P_D	200 mW - Power handling capacity compatible with 0402-class PCB pad layouts on standard FR-4

Pinout & Package

Package: SOD323 - ultra-small plastic surface-mount package (2.70 mm × 1.30 mm × 1.05 mm), cathode-banded polarity, matte tin-plated terminals, moisture sensitivity level 1.

Pin/Terminal	Circuit Role	Design Meaning
Anode	Forward current entry point	Connected to lower-potential node in clamp or rectifier configuration; requires low-inductance trace routing for RF stability
Cathode (banded end)	Forward current exit / reverse blocking terminal	Typically tied to reference rail (e.g., V_CC or ground); cathode band orientation must match silkscreen for automated assembly verification

Key Features

Feature	Design Value
Guard ring construction	Improves ESD robustness and stabilizes reverse leakage under voltage transients without adding series resistance
Negligible reverse recovery time	Enables clean zero-crossing detection in high-frequency AC sensing without recovery-induced jitter
Low forward voltage drop	Reduces power loss and self-heating in battery-operated signal conditioning stages operating below 1 mA
Ultra-small SOD323 footprint	Permits placement adjacent to RF ICs or antenna feeds where layout area is constrained to <3 mm²

Applications

RF Signal Detector

ESD Protection Clamp

Use Scenario: Demodulating AM signals in 2.4 GHz ISM-band receivers using passive envelope detection.

IC Role / Device Role / Timing Role: Schottky diode acting as nonlinear rectifier converting RF carrier amplitude into baseband voltage.

Use Value: 2.2 pF capacitance and 1.0 ns t_RR preserve signal fidelity up to 1 GHz; 0.39 V V_F enables detection of sub-100 mV pk-pk inputs.

Use Scenario: Protecting I²C data lines (SDA/SCL) in industrial sensor nodes against ±8 kV contact ESD per IEC 61000-4-2.

IC Role / Device Role / Timing Role: Low-capacitance shunt clamp diverting ESD current away from MCU GPIO pins.

Use Value: 200 nA leakage at 3.3 V ensures no measurable bus pull-down; guard ring structure sustains clamping performance after repeated strikes.

Low-Power Voltage Reference

High-Speed Logic-Level Translator

Use Scenario: Generating stable 0.39 V bias for op-amp input offset trimming in medical-grade analog front-ends.

IC Role / Device Role / Timing Role: Forward-biased diode providing temperature-stable reference voltage via controlled V_F.

Use Value: Tight V_F spec (max 0.39 V @ 1 mA) allows predictable offset setting without calibration; low R_S minimizes load regulation error.

Use Scenario: Level-shifting 1.8 V logic outputs to 3.3 V domain in FPGA configuration interfaces.

IC Role / Device Role / Timing Role: Passive bidirectional translator using diode forward drop to shift logic thresholds.

Use Value: Sub-0.4 V V_F ensures reliable high-to-low transition recognition; 1.0 ns t_RR prevents pulse distortion at 50 MHz toggle rates.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
BAT54CWS-7-F	40 V V_RWM, 0.33 V V_F @ 1 mA, 10 pF C_T - lower V_F but 4.5× higher capacitance	Less suitable for >100 MHz RF detection due to higher C_T; better for general-purpose clamping	Select when lowest forward drop is prioritized over RF bandwidth
NSR0230P2T5G	30 V V_RWM, 0.32 V V_F @ 1 mA, 1.5 pF C_T - lower voltage rating but lowest capacitance	Not usable in 30–40 V signal paths; optimal for sub-30 V high-speed digital clamping	Select when system max reverse voltage ≤30 V and minimal C_T is critical

Compared with BAT54CWS-7-F and NSR0230P2T5G, SD101CWS-7 offers the best balance of 40 V rating, ultra-low 2.2 pF capacitance, and sub-0.4 V forward drop-making it uniquely suited for RF detector and mixed-signal interface applications where both voltage headroom and high-frequency response are required.

Availability

SD101CWS-7 is available at Aetrix Electronics and suitable for RF detector circuits, ESD protection networks, low-power voltage reference generation, and high-speed logic-level translation requiring stable component supply and consistent parametric performance across production lots.

Supply support for SD101CWS-7 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 components for automotive, industrial, and consumer electronics.

The SD101xWS series belongs to Diodes' precision Schottky diode product line, engineered specifically for high-frequency signal integrity and low-leakage operation in compact portable and wireless systems.

FAQ

What is the maximum reverse voltage rating for SD101CWS-7?

The SD101CWS-7 has a peak repetitive reverse voltage (V_RRM) of 40 V and a working peak reverse voltage (V_RWM) of 40 V. This rating is validated per DS30078 Rev. 13–2, with reverse breakdown tested at 10 µA leakage current. Exceeding 40 V risks irreversible junction breakdown and permanent device failure.

Does SD101CWS-7 meet automotive qualification standards?

No-SD101CWS-7 is not AEC-Q101 qualified. While Diodes offers automotive-grade variants (e.g., SD101CWSQ-7-F), this standard part is intended for commercial and industrial applications. For automotive use, consult Diodes' AEC-Q101 qualified equivalents and PPAP documentation through authorized channels.

How does the SOD323 package affect thermal performance?

Mounted on FR-4 with recommended pad layout, SD101CWS-7 exhibits a junction-to-ambient thermal resistance (R_θJA) of 625 °C/W and a maximum power dissipation of 200 mW at 25 °C ambient. Derating begins linearly above 25 °C, reaching zero dissipation at 125 °C ambient per the published derating curve.

Can SD101CWS-7 be used in place of SD101AWS-7 or SD101BWS-7?

Yes-pin-compatible and identical in package, polarity, and thermal specs-but with lower voltage rating (40 V vs. 50 V/60 V) and slightly lower V_F (0.39 V vs. 0.40 V/0.41 V at 1 mA). Substitution is valid only if circuit reverse voltage remains ≤40 V; exceeding this invalidates reliability margins and may cause premature failure.

SD101CWS-7 Specifications

Product attributes: Attribute value

Manufacturer:: Diodes Incorporated

Series:: -

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

Packaging:: Tape & Reel (TR)

Product Status:: Discontinued at Digi-Key

Technology:: Schottky

Voltage - DC Reverse (Vr) (Max):: 40 V

Current - Average Rectified (Io):: 15mA

Voltage - Forward (Vf) (Max) @ If:: 900 mV @ 15 mA

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

Reverse Recovery Time (trr):: 1 ns

Current - Reverse Leakage @ Vr:: 10 µA @ 800 V

Capacitance @ Vr, F:: 2.2pF @ 0V, 1MHz

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: SOD-323

Operating Temperature - Junction:: -65°C ~ 125°C

SD101CWS-7 FAQ

1.How can I place an order for SD101CWS-7 through Aetrix?

Please submit a Request for Quotation (RFQ) for SD101CWS-7 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 SD101CWS-7 reliable?

The price and inventory of SD101CWS-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SD101CWS-7 is usually 5 days.

3.What payment methods are accepted for SD101CWS-7?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SD101CWS-7 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for SD101CWS-7?

SD101CWS-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your SD101CWS-7 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 SD101CWS-7?

For technical support, including SD101CWS-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SD101CWS-7 requirements.

6.How does Aetrix verify that SD101CWS-7 is sourced from the original manufacturer or authorized distributors?

All SD101CWS-7 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 SD101CWS-7 meets industry standards.

7.What is the process for return or replacement of SD101CWS-7?

All SD101CWS-7 units undergo pre-shipment inspection (PSI). If there is an issue with SD101CWS-7, 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 SD101CWS-7 part is unused and in its original packaging.

Return procedure for SD101CWS-7:

1.Submit a request within 90 days.

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

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