Send an Inquiry

To receive a quote for your project, please fill in the following information, and we’ll get back to you promptly.

Submit Inventory List

Please fill in the following information, and we’ll get back to you promptly.

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

Diodes Incorporated ZHCS350TC

Name: ZHCS350TC
Brand: Diodes Incorporated
SKU: ZHCS350TC
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Compare

Part No.:: ZHCS350TC

Manufacturer:: Diodes Incorporated

Category:: Single Diodes

Package:: SC-79, SOD-523

Datasheet:: ZHCS350TC.pdf

Description:: DIODE SCHOTTKY 40V 350MA SOD523

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:3,014

Please send an inquiry. Send us your inquiry, and we will respond immediately.

Product details

Overview

ZHCS350 from Diodes Incorporated is a 40V, 350mA surface-mount Schottky barrier diode in SOD523 package, featuring 405mV typical forward voltage at 100mA, 7μA typical reverse leakage at 30V, and 1.6ns reverse recovery time-optimized for high-frequency rectification in compact DC–DC converters and LED driver circuits.

For engineers reviewing the ZHCS350 datasheet, ZHCS350 pinout, ZHCS350 application, or ZHCS350 equivalent, key selection criteria include low-profile height (0.9mm), thermal resistance (300°C/W on 1-inch² copper pad), RoHS- and halogen-free compliance, and verified performance under pulsed forward current up to 350mA.

Technical Context

This Schottky diode employs a planar epitaxial construction with low-barrier metal-semiconductor junction to achieve fast switching (t_RR = 1.6ns) and minimal conduction loss. Its 40V reverse voltage rating and 125°C maximum junction temperature support operation in thermally constrained portable power stages.

The device is characterized with strict test conditions: VF measured at 300μs pulse width (≤2% duty cycle); IR tested at VR = 30V; CD measured at f = 1MHz, VR = 25V. Thermal metrics assume defined PCB layouts-2oz copper pad (R_θJA = 300°C/W) or standard FR-4 (470°C/W).

Key Specifications

Parameter	Value and Actual Design Meaning
VR	40V reverse blocking capability-supports input rails up to 36V in buck converters without breakdown risk
IF	350mA continuous forward current-enables sustained conduction in low-power LED bias and auxiliary supply paths
VF @ 100mA	405mV typical-reduces forward power loss to ~40.5mW, critical for efficiency in battery-powered systems
IR @ 30V	7μA typical-minimizes standby leakage in always-on voltage clamp and protection circuits
tRR	1.6ns-ensures minimal switching loss and EMI in >1MHz DC–DC topologies
CD @ 25V	3.3–6pF-low capacitance preserves high-frequency response in RF detector and snubber applications
RθJA (copper pad)	300°C/W-permits 330mW power dissipation at +25°C ambient when mounted on 1-inch² 2oz copper

Pinout & Package

Package: SOD523 - ultra-thin surface-mount package with 0.9mm max height, 0.75–0.85mm body width (E), and cathode band polarity marking.

Pin/Terminal	Circuit Role	Design Meaning
Anode	Forward current entry point	Connected to lower-potential node (e.g., switch node in synchronous buck); requires low-inductance layout
Cathode	Forward current exit / reverse voltage terminal	Marked by band; ties to output rail or ground return-critical for ESD-sensitive placement near IC inputs

Key Features

Feature	Design Value
Low-profile SOD523 package	0.9mm max height enables use in <1.0mm board stack-ups for smartphones and wearables
100% matte tin-plated leads	Ensures reliable solder wetting and intermetallic formation on OSP- or ENIG-finished PCBs
Lead-free & RoHS 3 compliant	Meets EU Directive 2015/863/EU with <900ppm Br, <900ppm Cl, <1000ppm Sb-required for CE-marked consumer devices
Junction temperature limit	125°C maximum-allows operation in sealed enclosures with limited airflow, e.g., USB-C PD adapters

Applications

DC–DC Converters

Mobile Telecomm

Use Scenario: Output rectification in 1–3MHz buck converters powering baseband processors in LTE handsets.

IC Role / Device Role: Freewheeling diode replacing synchronous MOSFET in cost-sensitive designs.

Use Value: 1.6ns t_RR and 405mV V_F reduce switching loss and improve light-load efficiency vs. standard PN diodes.

Use Scenario: Reverse polarity protection and ESD clamping on SIM card and antenna interface lines.

IC Role / Device Role: Low-capacitance (<6pF) voltage clamp with fast turn-on.

Use Value: 3.3pF C_D avoids signal integrity degradation on 50Ω RF paths while providing 40V standoff.

Charger Circuits

LED Driver Circuits

Use Scenario: OR-ing diode in dual-input (USB + adapter) charging paths for tablets.

IC Role / Device Role: Unidirectional current gate preventing backfeed between sources.

Use Value: 7μA I_R minimizes quiescent current drain during adapter disconnection-extending battery shelf life.

Use Scenario: Current steering and overvoltage protection in white LED backlight strings.

IC Role / Device Role: Cathode-connected clamp limiting transient voltage spikes across LED anodes.

Use Value: 40V V_R withstands inductive kickback from boost converter switches without avalanche stress.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
RB520S-30T2R	30V VR, 200mA IF, VF = 370mV @ 100mA, SOD-523 package	Lower voltage rating limits use to ≤24V systems; reduced current handling	Select when 30V rating suffices and lower VF tolerance is acceptable
NSR0330P2T5G	30V VR, 300mA IF, VF = 450mV @ 100mA, SOD-523 package	Higher VF increases conduction loss; same footprint but higher thermal resistance	Prefer where tighter IR control (<5μA) is prioritized over VF

Compared with RB520S-30T2R and NSR0330P2T5G, ZHCS350 delivers higher reverse voltage margin (40V), superior current rating (350mA), and lowest VF (405mV) in SOD523-making it optimal for 5–36V portable power rails demanding efficiency and reliability.

Availability

ZHCS350 is available at Aetrix Electronics and suitable for DC–DC converters, mobile telecomm interfaces, and LED driver circuits requiring stable component supply with full traceability and long-term lifecycle support.

Supply support for ZHCS350 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 centers across Asia and manufacturing in China, Taiwan, and the US.

ZHCS350 belongs to the Zetex Schottky diode product line, engineered specifically for space-constrained, high-efficiency power conversion in portable and battery-powered electronics.

FAQ

What is the maximum continuous forward current rating for ZHCS350?

The ZHCS350 has a continuous forward current (IF) rating of 350mA at TA = +25°C. Its average peak forward current (IFAV) is 510mA under 50% duty cycle conditions. Derating is required above +25°C ambient per the RθJA = 300°C/W thermal resistance on a 1-inch² copper pad.

Does ZHCS350 meet automotive qualification standards?

No-ZHCS350 is not AEC-Q200 qualified. However, an automotive-compliant variant, ZHCS350Q, is available under a separate datasheet (DS33215) and meets AEC-Q200 Grade 2 (−40°C to +105°C) requirements with enhanced process controls and extended testing.

How is polarity identified on the SOD523 package of ZHCS350?

Polarity is marked by a visible cathode band on the top surface of the SOD523 package. Per Diodes' marking specification, the band aligns with the cathode terminal; the unmarked end is the anode. This matches standard SOD523 orientation used by JEDEC and IPC-7351B land pattern guidelines.

What is the recommended PCB pad layout for ZHCS350?

Diodes specifies a suggested SOD523 pad layout: G = 0.80mm (gap), X = 0.60mm (pad width), X1 = 2.00mm (pad length), Y = 0.70mm (pad-to-pad spacing). Use this geometry to ensure coplanarity, solder joint strength, and thermal relief-especially critical given the device's 0.9mm profile and 330mW power dissipation capability.

ZHCS350TC Specifications

Product attributes: Attribute value

Manufacturer:: Diodes Incorporated

Series:: -

Package/Case:: SC-79, SOD-523

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Technology:: Schottky

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

Current - Average Rectified (Io):: 350mA

Voltage - Forward (Vf) (Max) @ If:: 810 mV @ 350 mA

Speed:: Fast Recovery =< 500ns, > 200mA (Io)

Reverse Recovery Time (trr):: 1.6 ns

Current - Reverse Leakage @ Vr:: 12 µA @ 30 V

Capacitance @ Vr, F:: 6pF @ 25V, 1MHz

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: SOD-523

Operating Temperature - Junction:: 125°C (Max)

ZHCS350TC FAQ

1.How can I place an order for ZHCS350TC through Aetrix?

Please submit a Request for Quotation (RFQ) for ZHCS350TC 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 ZHCS350TC reliable?

The price and inventory of ZHCS350TC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ZHCS350TC is usually 5 days.

3.What payment methods are accepted for ZHCS350TC?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ZHCS350TC transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for ZHCS350TC?

ZHCS350TC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your ZHCS350TC 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 ZHCS350TC?

For technical support, including ZHCS350TC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ZHCS350TC requirements.

6.How does Aetrix verify that ZHCS350TC is sourced from the original manufacturer or authorized distributors?

All ZHCS350TC 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 ZHCS350TC meets industry standards.

7.What is the process for return or replacement of ZHCS350TC?

All ZHCS350TC units undergo pre-shipment inspection (PSI). If there is an issue with ZHCS350TC, 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 ZHCS350TC part is unused and in its original packaging.

Return procedure for ZHCS350TC:

1.Submit a request within 90 days.

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

Tech Hub

2026-09-03 Logic Level Shifter: How to Connect 3.3V and 5V Logic Safely

A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.

2026-09-03 74HC595 vs TPIC6B595: Output Drive, Pinout, Current, and Load Selection

The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…

2026-09-01 74HC595 Pinout, Timing, Output Current, and Applications

The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…

2026-09-01 Latch vs Flip-Flop: Timing, Differences and Design Choices

A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…

2026-08-30 D Latch Circuit: Truth Table, Timing, ICs and Applications

A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …

2026-08-28 SR Latch Explained: NOR and NAND Circuits, Truth Tables, and Applications

An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…

2026-08-27 Latch Circuit: SR and D Latches, Truth Tables, Timing, and Applications

Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…

2026-08-21 What Is an LED Driver? Types, Circuits, Dimming, and Selection

An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…

2026-08-18 Operational Amplifier (Op Amp): Basics, Configurations, Feedback and Applications

Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…

2026-08-14 Jumper Cables: How to Use, Connect and Choose Them Safely

Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…