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Diodes Incorporated ZHCS1000TC
- Part No.:
- ZHCS1000TC
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
ZHCS1000TC.pdf
- Description:
- DIODE SCHOTTKY 40V 1A SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:7,176
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Product details
Overview
ZHCS1000TC from Diodes Incorporated is a surface-mount Schottky barrier diode in SOT23 package, rated for 40 V reverse voltage and 1 A continuous forward current, with typical forward voltage of 425 mV at 1 A and reverse leakage of 50 μA at 30 V, used in DC-DC converters and mobile telecom power rails.
For engineers reviewing the ZHCS1000TC datasheet, ZHCS1000TC pinout, ZHCS1000TC application, or ZHCS1000TC equivalent, key selection criteria include low VF for efficiency-critical 1 A switching paths, SOT23 footprint compatibility, thermal performance under 125°C junction limit, and JEDEC-qualified reliability for industrial and telecom designs.
Technical Context
This Schottky diode employs a planar silicon structure optimized for low forward voltage drop and fast recovery (trr ≤ 12 ns), enabling high-frequency operation in synchronous rectification and flyback secondary-side rectification circuits. Its 25 pF capacitance at 1 MHz and 30 V bias supports minimal switching loss in sub-MHz DC-DC topologies.
The device operates within a -55°C to +150°C storage range and sustains 1.75 A average peak forward current at 50% duty cycle, with transient surge capability up to 12 A for 100 μs-critical for handling inrush and load-dump transients in compact power modules.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 40 V - Maximum reverse blocking voltage before breakdown; sets upper limit for input/output rail isolation in buck/boost converters. |
| IF(AV) | 1 A - Continuous DC forward current rating; defines steady-state power delivery capacity in point-of-load regulators. |
| VF @ 1A | 425 mV (typ) - Low conduction loss at full load; reduces I²R heating and improves efficiency by ~0.4 W vs. higher-VF alternatives. |
| IR @ 30V | 50 μA (typ) - Minimal reverse leakage; preserves battery life in always-on mobile subsystems and avoids standby current drift. |
| trr | 12 ns - Fast reverse recovery time; enables clean turn-off in 500 kHz–1 MHz switching applications without tail current losses. |
| CT @ 1MHz | 25 pF - Junction capacitance at 30 V bias; limits capacitive switching loss and EMI generation in high-dV/dt environments. |
| TJ(max) | +125°C - Maximum junction temperature; constrains thermal design margin when mounted on 15 mm × 15 mm ceramic substrate per datasheet test condition. |
Pinout & Package
Package: SOT23 (Standard), 3-terminal surface-mount plastic package with matte tin-finished Alloy 42 leadframe, UL 94V-0 rated molding compound, and moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Pin 1) | Forward current entry point | Connected to switch node or inductor output; must handle 1 A DC and 12 A surge pulses without bondwire fusing. |
| Cathode (Pin 2) | Forward current exit / reverse voltage reference | Typically tied to ground or output capacitor negative; serves as return path and reverse-blocking terminal. |
| NC / Heat Sink Tab (Pin 3) | No internal connection | Electrically isolated; may be used for mechanical anchoring or thermal relief but carries no current or signal function. |
Key Features
| Feature | Design Value |
|---|---|
| Low VF at 1A | 425 mV typ - Enables >92% efficiency in 3.3 V/1 A buck converter at 500 kHz, reducing thermal stress on PCB copper. |
| JEDEC-qualified reliability | Qualified to AEC-Q standards per Diodes' high-reliability program - suitable for non-automotive industrial systems requiring extended lifetime and stable parametric drift. |
| Lead-free & Green compliance | Halogen- and antimony-free (<900 ppm Br/Cl, <1000 ppm Sb); meets RoHS 3 and IATF 16949 manufacturing requirements for global supply chain traceability. |
| SOT23 footprint | Standardized 2.9 mm × 2.4 mm outline with 0.915 mm pin pitch - ensures drop-in replacement compatibility across legacy and new designs using common pick-and-place tooling. |
Applications
| DC-DC Converters | Mobile Telecom Power Rails |
|---|---|
Use Scenario: Secondary-side rectification in 5 V/1 A buck converter powering baseband processor core logic. IC Role / Device Role: Synchronous rectifier replacing MOSFET gate drive complexity; conducts forward current during low-side switch ON phase. Use Value: 425 mV VF cuts conduction loss by 35% versus 650 mV diode, lowering die temperature rise by 18°C at full load. | Use Scenario: Reverse polarity protection and load-switch isolation in USB-powered LTE modem module. IC Role / Device Role: Unidirectional current path isolator preventing backfeed from battery to USB port during hot-swap events. Use Value: 50 μA IR at 30 V ensures <1 μW standby leakage, extending battery runtime beyond 72 hours in sleep mode. |
| PCMCIA Card Power Management | SCSI Interface Voltage Clamping |
Use Scenario: Input overvoltage clamping and rail decoupling in 3.3 V PCMCIA slot interface circuitry. IC Role / Device Role: Transient-suppressing Schottky clamp between VCC and chassis ground during hot-insertion surges. Use Value: 12 ns trr prevents latch-up during 100 V/μs edge transients, maintaining data integrity across 66 MHz bus timing windows. | Use Scenario: Termination voltage stabilization on differential SCSI-2 signal pairs operating at 10 MB/s. IC Role / Device Role: Low-capacitance (25 pF) biasing diode maintaining common-mode voltage while minimizing signal distortion. Use Value: 25 pF CT adds <0.5% rise-time degradation to 10 ns edges, preserving eye diagram margin per ANSI X3.131-1994. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MBR0540T1G | Same 40 V VRRM, 0.5 A IF rating, 450 mV VF @ 0.5 A; SOD-123 package | Limited to 0.5 A continuous use; unsuitable for 1 A DC-DC outputs | Select only for space-constrained 0.5 A bias rails where SOD-123 footprint is preferred. |
| SS14 | 40 V VRRM, 1 A IF, 500 mV VF @ 1 A; DO-214AC package | DO-214AC requires 3× larger PCB area and higher thermal resistance than SOT23 | Choose only when higher surge rating (30 A IFSM) justifies larger footprint and manual assembly. |
Compared with MBR0540T1G and SS14, ZHCS1000TC uniquely delivers 1 A capability in SOT23 with 425 mV VF-enabling miniaturized, thermally efficient 1 A power stages unachievable with either alternative without trade-offs in size, current, or voltage drop.
Availability
ZHCS1000TC is available at Aetrix Electronics and suitable for DC-DC converters, mobile telecom power rails, and PCMCIA card power management requiring stable component supply, JEDEC-qualified reliability, and RoHS 3 compliance.
Supply support for ZHCS1000TC 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.
ZHCS1000 belongs to Diodes' high-efficiency Schottky diode product line, engineered specifically for low-voltage, high-current switching applications in portable and space-constrained power systems.
FAQ
What is the maximum junction temperature and how does it affect PCB layout?
The ZHCS1000TC has a maximum junction temperature of +125°C. To maintain this limit, the SOT23 package must be mounted on a PCB with adequate copper pour-minimum 15 mm × 15 mm ceramic substrate per datasheet thermal test condition. Smaller pads increase thermal resistance, risking premature failure at 1 A continuous load.
Is ZHCS1000TC qualified for automotive applications?
ZHCS1000TC is not AEC-Q200 qualified. Diodes offers automotive-grade equivalents with Q-suffix (e.g., ZHCS1000QTC) that undergo PPAP, AEC-Q200 testing, and are manufactured in IATF 16949-certified facilities. Standard ZHCS1000TC is intended for industrial and consumer applications meeting JEDEC reliability standards.
How does the 12 ns reverse recovery time impact EMI in switching converters?
A 12 ns trr minimizes reverse recovery current spikes during turn-off, reducing high-frequency ringing on switch-node waveforms. This directly lowers conducted EMI in the 30–100 MHz band, easing compliance with CISPR 22 Class B limits without additional snubbing components in 500 kHz–1 MHz converters.
Can ZHCS1000TC replace a standard PN junction diode in an existing design?
Yes-if the original diode's VRRM ≥ 40 V and IF ≥ 1 A. ZHCS1000TC's lower VF (425 mV vs. ~700 mV for PN diodes) reduces conduction loss and heat generation, but its higher IR (50 μA vs. <1 μA for PN) may affect ultra-low-power sleep modes. Verify leakage impact in battery-backed circuits.
ZHCS1000TC Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 40 V
- Current - Average Rectified (Io):
- 1A
- Voltage - Forward (Vf) (Max) @ If:
- 500 mV @ 1 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 12 ns
- Current - Reverse Leakage @ Vr:
- 100 µA @ 30 V
- Capacitance @ Vr, F:
- 25pF @ 25V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
- Operating Temperature - Junction:
- 125°C (Max)
ZHCS1000TC FAQ
1.How can I place an order for ZHCS1000TC through Aetrix?
Please submit a Request for Quotation (RFQ) for ZHCS1000TC 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 ZHCS1000TC reliable?
The price and inventory of ZHCS1000TC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ZHCS1000TC is usually 5 days.
3.What payment methods are accepted for ZHCS1000TC?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ZHCS1000TC transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ZHCS1000TC?
ZHCS1000TC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ZHCS1000TC 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 ZHCS1000TC?
For technical support, including ZHCS1000TC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ZHCS1000TC requirements.
6.How does Aetrix verify that ZHCS1000TC is sourced from the original manufacturer or authorized distributors?
All ZHCS1000TC 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 ZHCS1000TC meets industry standards.
7.What is the process for return or replacement of ZHCS1000TC?
All ZHCS1000TC units undergo pre-shipment inspection (PSI). If there is an issue with ZHCS1000TC, 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 ZHCS1000TC part is unused and in its original packaging.
Return procedure for ZHCS1000TC:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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