My Inquiry
My Account
Diodes Incorporated ZLLS500TC
- Part No.:
- ZLLS500TC
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
ZLLS500TC.pdf
- Description:
- DIODE SCHOTTKY 40V 700MA SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:8,760
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
ZLLS500TC from Diodes Incorporated is a surface-mount Schottky barrier diode in SOT23 package, rated for 40V reverse voltage and 0.7A continuous forward current, with 10μA reverse leakage at 30V and 305mV typical forward voltage at 50mA - optimized for high-efficiency DC-DC converters and motor control circuits operating above 85°C.
For engineers reviewing the ZLLS500TC datasheet, ZLLS500TC pinout, ZLLS500TC application, or ZLLS500TC equivalent, key selection criteria include low VF at high IF, AEC-Q101 qualification, thermal rating to 150°C junction temperature, and verified performance under elevated ambient conditions up to 100°C.
Technical Context
This Schottky diode employs a planar epitaxial construction with low-barrier metal-semiconductor junction, enabling fast switching (trr ≤ 3ns) and minimal reverse recovery charge (Qrr = 210pC). Its low forward voltage drop remains stable across temperature, with VF = 415mV at IF = 500mA and TA = 100°C.
The device is qualified to AEC-Q101 standards and features a thermally robust SOT23 package rated to 150°C junction temperature, with RθJA = 198°C/W on FR4 PCB (t < 5s), supporting reliable operation in automotive and industrial power stages where thermal management is critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VR (Reverse Voltage) | 40 V - maximum blocking voltage before breakdown; supports 36V nominal bus designs with margin. |
| IF (Continuous Forward Current) | 0.7 A - sustained conduction capability without thermal runaway on standard FR4 layout. |
| VF @ 50mA | 305 mV typ - enables >95% efficiency in low-voltage synchronous rectification paths. |
| IR @ 30V | 10 μA max - ultra-low leakage preserves battery life in always-on charging circuits. |
| trr | 3 ns - minimizes switching losses in high-frequency (>1MHz) DC-DC topologies. |
| TJ max | 150 °C - allows placement near hot components in compact power modules. |
| Qrr | 210 pC - reduces EMI and gate drive stress in MOSFET-synchronous buck stages. |
Pinout & Package
SOT23-3 package with matte tin-plated Alloy 42 leadframe; thermally rated to 150°C junction temperature; moisture sensitivity level 1 per J-STD-020.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Anode) | Anode connection | Forward current entry point; connects to switch node in buck converter freewheeling path. |
| 2 (Cathode) | Cathode connection | Output/return path; ties to output capacitor ground or common rail in charge pump circuits. |
| 3 (NC) | No-connect terminal | Internally unconnected; must remain floating - no PCB trace or thermal pad connection. |
Key Features
| Feature | Design Value |
|---|---|
| Low VF at high temperature | VF = 415mV @ IF = 500mA, TA = 100°C - maintains efficiency in thermally constrained enclosures. |
| AEC-Q101 qualification | Qualified for automotive power electronics - meets vibration, temperature cycling, and HTRB requirements. |
| Fast reverse recovery | trr ≤ 3ns - eliminates tail current, reducing cross-conduction loss in synchronous rectifiers. |
| Green molding compound | UL 94V-0 rated, halogen-free plastic - satisfies RoHS and automotive material compliance mandates. |
| Thermal resistance | RθJA = 198°C/W (t < 5s) - enables 0.7A operation without heatsink on 1oz copper FR4. |
Applications
| Automotive DC-DC Converters | USB-C Charging Circuits |
|---|---|
Use Scenario: Step-down conversion from 12V/48V vehicle battery to 5V/9V for infotainment and ADAS modules. IC Role / Device Role / Timing Role: Freewheeling diode in non-synchronous buck regulator; handles peak currents up to 1.14A. Use Value: Low VF and 150°C TJ rating sustain efficiency and reliability during engine-bay thermal transients. | Use Scenario: Input OR-ing and reverse-polarity protection in dual-input USB-C PD chargers. IC Role / Device Role / Timing Role: High-speed, low-loss rectifier in 20–100W portable charger front-end. Use Value: 10μA IR at 30V prevents standby drain; 3ns trr avoids shoot-through in multi-source arbitration. |
| Motor Control Flyback Protection | Strobe Flash Drivers |
Use Scenario: Back-EMF clamping in brushed DC motor H-bridge drivers for power tools and HVAC actuators. IC Role / Device Role / Timing Role: Fast-recovery flyback diode absorbing inductive kick during PWM turn-off. Use Value: 210pC Qrr limits voltage overshoot; 13A IFSM withstands stall-current surges. | Use Scenario: High-current pulse rectification in camera flash capacitor discharge circuits. IC Role / Device Role / Timing Role: Primary discharge path for 300–500V capacitor banks into xenon tube loads. Use Value: 0.7A IF and 1.14A IFPK support 10–20Hz strobe repetition 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 |
|---|---|---|---|
| VBSS8140VH | 40V VR, 1A IF, SOT23-3, VF = 370mV @ 1A - higher current but higher VF at low IF. | Better suited for 1A continuous loads; less optimal below 200mA due to VF slope. | Select when peak load exceeds 0.8A and board space permits same footprint. |
| ZHCS500 | Same SOT23-3, 40V VR, but VF = 280mV @ 50mA - lower VF at room temp, not rated >125°C. | Preferred for low-temp consumer devices; not qualified to AEC-Q101 or rated for >125°C operation. | Choose for cost-sensitive, non-automotive applications where ambient stays <85°C. |
Compared with VBSS8140VH and ZHCS500, ZLLS500TC uniquely balances low-leakage (10μA), AEC-Q101 compliance, and stable VF up to 100°C - making it the only option qualified for under-hood automotive DC-DC and industrial motor drives requiring extended thermal range.
Availability
ZLLS500TC is available at Aetrix Electronics and suitable for automotive DC-DC converters, USB-C charging circuits, and motor control flyback protection requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for ZLLS500TC 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 and manufacturing operations across Asia and the US.
ZLLS500TC belongs to the ZLLS series of high-temperature Schottky diodes, engineered specifically for automotive and industrial power conversion where thermal stability, low leakage, and AEC-Q101 compliance are mandatory.
FAQ
What is the maximum junction temperature and thermal resistance of ZLLS500TC?
ZLLS500TC has a maximum junction temperature of 150°C and a thermal resistance of RθJA = 198°C/W when mounted on FR4 PCB with t < 5s measurement condition. This value assumes standard 1oz copper coverage and still-air environment - actual RθJA may vary with PCB layout and airflow.
Is ZLLS500TC pin-compatible with ZHCS500?
Yes, ZLLS500TC and ZHCS500 share identical SOT23-3 pinout (Anode–Cathode–NC) and mechanical dimensions. However, ZLLS500TC is rated for operation up to 150°C junction temperature and qualified to AEC-Q101, whereas ZHCS500 is specified only to 125°C and lacks automotive qualification.
Does ZLLS500TC support reflow soldering per JEDEC standards?
Yes, ZLLS500TC is rated for moisture sensitivity level 1 per J-STD-020 and supports standard lead-free reflow profiles (peak 260°C, 10s max). The matte tin finish on Alloy 42 leadframe ensures reliable solderability per MIL-STD-202, Method 208.
What is the reverse recovery charge (Qrr) and why does it matter in DC-DC designs?
ZLLS500TC has Qrr = 210pC, measured at IF = 500mA with di/dt = 500mA/ns. Low Qrr reduces switching node ringing and gate driver stress in synchronous buck converters, directly improving EMI performance and MOSFET reliability during hard-switching transitions.
ZLLS500TC 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:
- Obsolete
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 40 V
- Current - Average Rectified (Io):
- 700mA
- Voltage - Forward (Vf) (Max) @ If:
- 530 mV @ 500 mA
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 3 ns
- Current - Reverse Leakage @ Vr:
- 10 µA @ 30 V
- Capacitance @ Vr, F:
- 16pF @ 30V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
- Operating Temperature - Junction:
- 150°C (Max)
ZLLS500TC FAQ
1.How can I place an order for ZLLS500TC through Aetrix?
Please submit a Request for Quotation (RFQ) for ZLLS500TC 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 ZLLS500TC reliable?
The price and inventory of ZLLS500TC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ZLLS500TC is usually 5 days.
3.What payment methods are accepted for ZLLS500TC?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ZLLS500TC transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ZLLS500TC?
ZLLS500TC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ZLLS500TC 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 ZLLS500TC?
For technical support, including ZLLS500TC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ZLLS500TC requirements.
6.How does Aetrix verify that ZLLS500TC is sourced from the original manufacturer or authorized distributors?
All ZLLS500TC 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 ZLLS500TC meets industry standards.
7.What is the process for return or replacement of ZLLS500TC?
All ZLLS500TC units undergo pre-shipment inspection (PSI). If there is an issue with ZLLS500TC, 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 ZLLS500TC part is unused and in its original packaging.
Return procedure for ZLLS500TC:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ZLLS500TC Tags
-
1N4448X-TP
Micro Commercial Co
-
1N4148WX-TP
Micro Commercial Co
-
1N4148TR
onsemi
-
MMSD4148T1G
onsemi
-
MMBD914LT3G
onsemi
-
BAS16HT1G
onsemi
-
1N914BWT
onsemi
-
BAS21LT1G
onsemi
-
LL4148
onsemi
-
BAS16LT1G
onsemi
-
MMSD914T1G
onsemi
-
BAV21W-7-F
Diodes Incorporated
Tech Hub
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…
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…
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…
LDO regulator guide covering low dropout voltage, power dissipation, thermal design, PSRR, output noise, capacitor stability, adjustable LDO circuits, LDO vs buck converter and datasheet selection chec…
Conditional Access Module guide covering CAM meaning, CI/CI+ interface, smart card authorization, DVB security workflow, TV and set-top box compatibility, internal electronics, ESD protection, connecto…
Guide to electronic component obsolescence covering EOL risk, PCN/PDN notices, last-time buy planning, replacement options, form-fit-function validation, counterfeit risk and BOM lifecycle management.
18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…
Hall effect sensor guide covering working principle, linear and digital sensors, Arduino circuits, current sensing, speed detection, automotive applications, A3144 examples, signal filtering and datash…
Product Change Notification guide for electronic components, covering PCN meaning, PCN vs PDN/EOL, common change types, risk levels, form-fit-function review, engineering validation, BOM control, LTB/L…
A practical guide to blend door actuators, covering HVAC function, symptoms, location, AC and heater issues, reset and calibration, replacement cost, electrical diagnosis, compatibility checks, and rep…
