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Diodes Incorporated ZHCS400TC
- Part No.:
- ZHCS400TC
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
ZHCS400TC.pdf
- Description:
- DIODE SCHOTTKY 40V 400MA SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:19,677
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Product details
Overview
ZHCS400TC from Diodes Incorporated is a 40 V, 400 mA surface-mount Schottky barrier diode in SOD323 package, with max forward voltage of 500 mV at 400 mA and reverse leakage of 40 µA at 30 V, optimized for high-efficiency DC-DC converters operating above +85°C.
For engineers reviewing the ZHCS400TC datasheet, ZHCS400TC pinout, ZHCS400TC application, or ZHCS400TC equivalent, key selection criteria include low VF at high current, thermal rating to +150°C, JEDEC-qualified reliability, SOD323 footprint compatibility, and automotive-grade variant availability (ZHCS400Q).
Technical Context
This Schottky diode uses a planar epitaxial construction to achieve low forward voltage and fast switching with negligible reverse recovery charge. Its junction-to-ambient thermal resistance is 500 °C/W on a 1-inch² 2 oz copper pad, enabling stable operation up to +125°C junction temperature.
The device meets JEDEC reliability standards and is fully RoHS-compliant, halogen- and antimony-free ("Green"), with matte tin-plated terminals solderable per MIL-STD-202 Method 208 and moisture sensitivity level 1 per J-STD-020.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 40 V - Maximum continuous reverse blocking voltage before breakdown |
| IF | 400 mA - Continuous forward current rating at +25°C ambient |
| VF (max) | 500 mV @ 400 mA - Ensures minimal conduction loss in high-current DC-DC output rectification |
| IR (max) | 40 µA @ 30 V - Low leakage preserves efficiency in standby and light-load conditions |
| RθJA | 500 °C/W - Thermal resistance defines power derating curve on standard PCB layout |
| TJ(max) | +125°C - Maximum junction temperature limit for reliable long-term operation |
| Package | SOD323 - 1.3 mm × 1.7 mm × 0.9 mm footprint compatible with high-density portable designs |
Pinout & Package
Package: SOD323 - ultra-compact surface-mount plastic package with cathode-marked anode-cathode orientation; dimensions: 1.30 mm (D) × 1.70 mm (E) × 0.90 mm (He); weight ≈ 0.004 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to lower-potential side (e.g., switch node in buck converter) |
| Cathode | Forward current exit / reverse-blocking terminal | Marked with band; connected to output rail or ground return path |
Key Features
| Feature | Design Value |
|---|---|
| Low VF at high current | 370–500 mV across 250–400 mA range - reduces I²R losses in compact power stages |
| Thermal rating | Junction-to-ambient RθJA = 500 °C/W with recommended pad layout - supports +125°C TJ operation in thermally constrained spaces |
| JEDEC-qualified reliability | Qualified per AEC-Q standards for high-reliability applications - validated for extended life under thermal cycling and humidity stress |
| Green compliance | Halogen- and antimony-free (<900 ppm Br/Cl, <1000 ppm Sb) - meets global environmental regulations without performance trade-offs |
Applications
| DC-DC Converters | Mobile Telecoms |
|---|---|
Use Scenario: Output rectification in 3.3 V/5 V buck converters powering baseband processors in LTE/5G handsets. IC Role / Device Role / Timing Role: Freewheeling diode providing low-loss current path during high-side switch off-time. Use Value: 500 mV VF at 400 mA minimizes conduction loss, improving efficiency by >1.2% vs. standard Schottkys at +85°C ambient. | Use Scenario: Reverse polarity protection and battery backup path management in dual-SIM smartphone PMIC subsystems. IC Role / Device Role / Timing Role: Unidirectional current gate preventing backfeed from auxiliary rails into main battery. Use Value: 40 µA IR at 30 V ensures <1 µW standby leakage, extending battery shelf life beyond 12 months. |
| PCMCIA Interfaces | Industrial Sensor Nodes |
Use Scenario: Hot-swap transient suppression and supply isolation in legacy PCMCIA card slots. IC Role / Device Role / Timing Role: Clamp diode limiting voltage overshoot during insertion/removal events. Use Value: Fast switching and low capacitance (20 pF @ 25 V) prevent signal integrity degradation on 33 MHz data buses. | Use Scenario: Power-path OR-ing in battery-backed wireless sensor nodes with dual input sources (solar + Li-ion). IC Role / Device Role / Timing Role: Lossless diode-based power selector enabling seamless source transition. Use Value: SOD323 footprint and +150°C package rating allow placement near heat-generating RF modules without derating. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MBR0540T1G (ON Semiconductor) | Same 40 V VRRM, but VF = 550 mV @ 500 mA; SOD-123 package (larger footprint) | Higher VF increases conduction loss in space-constrained mobile designs | Prefer ZHCS400TC where board area and thermal density are critical |
| SS40HE3/5AT (Vishay) | 40 V VRRM, IF = 400 mA, VF = 520 mV @ 400 mA; SOD-323 package, but not AEC-Q qualified | Lacks JEDEC reliability validation for automotive or industrial deployments | Choose ZHCS400TC when qualification traceability and long-term field stability are required |
Compared with MBR0540T1G and SS40HE3/5AT, ZHCS400TC delivers lower VF in the same SOD323 footprint while maintaining AEC-Q alignment and Green compliance-making it optimal for thermally dense, reliability-critical portable and industrial power rails.
Availability
ZHCS400TC is available at Aetrix Electronics and suitable for DC-DC converters, mobile telecoms, and PCMCIA interfaces requiring stable component supply, JEDEC-qualified reliability, and RoHS/Green compliance.
Supply support for ZHCS400TC 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-performance, high-reliability components for power management and signal integrity.
ZHCS400TC belongs to the ZHCS series of low-VF Schottky diodes designed specifically for high-efficiency, high-temperature DC-DC conversion in space-constrained portable and industrial electronics.
FAQ
What is the maximum junction temperature for ZHCS400TC?
The absolute maximum junction temperature (TJ) is +125°C, as specified in the Electrical Characteristics table. Operation beyond this limit risks permanent degradation of the Schottky junction and must be avoided via proper thermal design using the stated RθJA = 500 °C/W value and recommended copper pad layout.
Is ZHCS400TC suitable for automotive applications?
ZHCS400TC itself is not automotive-qualified, but its automotive-grade counterpart ZHCS400Q is available under a separate datasheet and qualified to AEC-Q standards. ZHCS400TC is rated for industrial and commercial use with JEDEC reliability validation, making it appropriate for non-safety-critical automotive subsystems only if customer qualification is performed.
How does the SOD323 package affect thermal performance?
The SOD323 package achieves a junction-to-ambient thermal resistance of 500 °C/W when mounted on a 1-inch² 2 oz copper pad per Diodes' recommended layout. Its small size limits total dissipation to 250 mW at +25°C ambient, requiring careful derating above +25°C to maintain TJ ≤ +125°C.
What is the reverse recovery behavior of ZHCS400TC?
ZHCS400TC is a Schottky barrier diode with no minority-carrier storage, resulting in effectively zero reverse recovery time (trr) and negligible reverse recovery charge (Qrr). This eliminates switching losses associated with PN diodes and enables clean, efficient operation in high-frequency DC-DC topologies up to several MHz.
ZHCS400TC Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SC-76, SOD-323
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 40 V
- Current - Average Rectified (Io):
- 400mA
- Voltage - Forward (Vf) (Max) @ If:
- 500 mV @ 400 mA
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 40 µA @ 30 V
- Capacitance @ Vr, F:
- 20pF @ 25V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-323
- Operating Temperature - Junction:
- -
ZHCS400TC FAQ
1.How can I place an order for ZHCS400TC through Aetrix?
Please submit a Request for Quotation (RFQ) for ZHCS400TC 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 ZHCS400TC reliable?
The price and inventory of ZHCS400TC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ZHCS400TC is usually 5 days.
3.What payment methods are accepted for ZHCS400TC?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ZHCS400TC transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ZHCS400TC?
ZHCS400TC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ZHCS400TC 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 ZHCS400TC?
For technical support, including ZHCS400TC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ZHCS400TC requirements.
6.How does Aetrix verify that ZHCS400TC is sourced from the original manufacturer or authorized distributors?
All ZHCS400TC 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 ZHCS400TC meets industry standards.
7.What is the process for return or replacement of ZHCS400TC?
All ZHCS400TC units undergo pre-shipment inspection (PSI). If there is an issue with ZHCS400TC, 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 ZHCS400TC part is unused and in its original packaging.
Return procedure for ZHCS400TC:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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