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Diodes Incorporated ZLLS2000TA
- Part No.:
- ZLLS2000TA
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Diodes
- Package:
- SOT-23-6
- Datasheet:
-
ZLLS2000TA.pdf
- Description:
- DIODE SCHOTTKY 40V 2.2A SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:25,639
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Product details
Overview
ZLLS2000TA from Diodes Incorporated is a 40V, 2A surface-mount Schottky barrier diode in SOT26 package, featuring 0.54V max forward voltage at 2A and 40µA max reverse leakage at 30V/25°C, optimized for high-frequency rectification and reverse-polarity protection in compact DC-DC converters and charging circuits.
For engineers reviewing the ZLLS2000TA datasheet, ZLLS2000TA pinout, ZLLS2000TA application, or ZLLS2000TA equivalent, key selection criteria include low VF stability across temperature, thermally robust SOT26 packaging rated to +150°C junction, and verified leakage performance under 30V reverse bias - critical for battery-powered and automotive-adjacent power rails.
Technical Context
This Schottky diode uses a low-leakage epitaxial structure with optimized metal-semiconductor interface to achieve sub-0.6V forward drop at 2A while maintaining IR ≤ 40 µA at 30V/25°C. Its 65pF capacitance at 1MHz/30V and 6ns reverse recovery time support efficient operation in 1–5 MHz switching regulators.
The SOT26 package integrates three cathode terminals and one anode terminal on a single leadframe, enabling parallel current paths and reducing effective on-resistance. Thermal resistance is specified at 73°C/W (junction-to-ambient, high-copper PCB) and 113°C/W (standard FR-4), supporting continuous 2A conduction at ambient up to +85°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 40 V - Maximum continuous reverse blocking voltage before breakdown; ensures safe operation in 24V system reverse-protection applications. |
| IF(AV) | 2 A - Average forward current rating; supports sustained 2A output in buck converter synchronous rectifier or OR-ing configurations. |
| VF Max | 0.54 V @ 2A, 25°C - Low conduction loss enables >95% efficiency in 3.3V–12V DC-DC stages with minimal thermal rise. |
| IR Max | 40 µA @ 30V, 25°C - Ultra-low leakage preserves battery standby life in always-on mobile phone charging circuits. |
| tRR | 6 ns - Fast recovery minimizes switching losses and EMI in high-frequency (>1 MHz) topologies without snubbers. |
| CD | 65 pF @ 1MHz, 30V - Low junction capacitance reduces capacitive coupling noise and improves transient response in feedback paths. |
| RθJA | 73 °C/W - Validated on FR-B PCB; enables 2A operation at TA ≤ +85°C without derating in space-constrained industrial modules. |
Pinout & Package
Package: SOT26 - thermally enhanced 6-pin surface-mount package with triple-cathode configuration (pins 1, 2, 4) and single anode (pin 6), molded in halogen-free, RoHS-compliant compound rated UL 94V-0.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 4 (Cathode) | Cathode connection (shared) | Three parallel cathode terminals reduce bond-wire inductance and package resistance, lowering effective VF and improving current sharing. |
| 6 (Anode) | Anode connection | Single anode terminal simplifies PCB layout; designed for direct connection to switch-node or input rail in buck/boost topologies. |
| 3, 5 (NC) | No connect | Unbonded internal pads; electrically isolated and must not be connected to any net to avoid parasitic coupling or thermal stress. |
Key Features
| Feature | Design Value |
|---|---|
| Low forward voltage drop | VF = 0.433–0.540 V across 1–2 A range at 25°C, minimizing I²R losses in high-current portable power rails. |
| Extremely low reverse leakage | IR ≤ 40 µA at 30V/25°C and ≤ 0.6 mA at 30V/85°C - critical for preserving battery charge in always-on mobile subsystems. |
| Thermal rating | Junction temperature rated to +150°C with package thermally optimized for 1.71 W dissipation at t < 5 sec - supports surge-tolerant motor control clamping. |
| Green packaging | Halogen- and antimony-free molding compound (<900 ppm Br+Cl, <1000 ppm Sb); compliant with JEDEC J-STD-020 Level 1 moisture sensitivity. |
Applications
| DC-DC Converters | Mobile Phone Charging Circuits |
|---|---|
Use Scenario: Secondary-side rectification in 1–3 MHz synchronous buck converters powering SoCs and PMICs. IC Role / Device Role: Low-loss freewheeling diode replacing MOSFET body diode to reduce conduction loss and improve light-load efficiency. Use Value: 0.54 V VF at 2A cuts conduction loss by ~35% vs. standard Schottky alternatives, directly extending battery runtime in 5V/3A USB-PD adapters. |
Use Scenario: Reverse-voltage protection between USB input and Li-ion battery charger IC. IC Role / Device Role: Input polarity guard preventing damage during misconnected cables or hot-swap events. Use Value: 40 µA IR at 25°C ensures <1 µA total system standby drain - essential for multi-week shelf life in unpowered mobile accessories. |
| Strobe Lighting Drivers | Motor Control Clamping |
Use Scenario: High-current pulse rectification in camera flash capacitor discharge circuits (10–100 ms pulses). IC Role / Device Role: Fast-recovery path for capacitor energy return, limiting voltage overshoot during rapid turn-off. Use Value: 6 ns tRR and 36 A IFSM enable clean, repeatable 5–10 A strobe pulses without thermal runaway or voltage ringing. |
Use Scenario: Flyback diode across brushed DC motor windings in automotive HVAC actuators. IC Role / Device Role: Inductive energy recirculation path during PWM commutation. Use Value: 150°C TJ rating and 73°C/W RθJA allow continuous 2A clamping at +105°C ambient - validated for under-hood industrial actuator designs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SB240-E3/54 (Vishay) | 40V VRRM, 2A IF, VF = 0.55V @ 2A, but IR = 500 µA @ 30V - 12× higher leakage than ZLLS2000TA. | Acceptable in non-battery-critical 12V industrial supplies; unsuitable for Li-ion charging where µA-level standby drain matters. | Select only when cost priority outweighs leakage sensitivity and thermal margin is ample. |
| SS24 (ON Semiconductor) | 40V VRRM, 2A IF, VF = 0.52V @ 2A, but tRR = 100 ns and RθJA = 120°C/W - slower and less thermally efficient. | Functional in low-frequency (<500 kHz) flyback supplies; cannot replace ZLLS2000TA in 2+ MHz DC-DC without efficiency penalty. | Use only if board layout restricts SOT26 footprint or if legacy SS24 BOM consolidation is required. |
Compared with SB240-E3/54 and SS24, ZLLS2000TA delivers superior leakage control and thermal performance for high-frequency, battery-sensitive applications - its triple-cathode SOT26 design enables lower effective resistance and faster recovery without sacrificing reliability.
Availability
ZLLS2000TA is available at Aetrix Electronics and suitable for DC-DC converters, mobile phone charging circuits, and motor control clamping requiring stable component supply, full RoHS compliance, and guaranteed thermal performance up to +150°C junction temperature.
Supply support for ZLLS2000TA 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-efficiency power management, signal integrity, and protection solutions for industrial, computing, and consumer markets.
ZLLS2000TA belongs to Diodes' high-current Schottky diode product line, engineered specifically for compact, thermally demanding power conversion and reverse-protection applications where low VF, ultra-low IR, and robust SMT packaging are mandatory.
FAQ
What is the maximum continuous forward current for ZLLS2000TA at +100°C ambient?
The ZLLS2000TA supports 2A average forward current at +25°C ambient. At +100°C, derating applies: based on RθJA = 113°C/W and TJ(max) = +150°C, the usable IF drops to approximately 1.3A to maintain safe junction temperature. This value is confirmed by the device's thermal curve on page 3 of DS32060 Rev. 8-2.
Is ZLLS2000TA pin-compatible with standard SOT23-3 Schottky diodes?
No. ZLLS2000TA uses the SOT26 package with six leads (three cathodes, one anode, two NC), whereas SOT23-3 has three pins and different pin spacing. Direct replacement requires PCB redesign. The triple-cathode layout is intentional to reduce resistance and inductance - not a mechanical variant of SOT23-3.
Does ZLLS2000TA meet AEC-Q200 requirements for automotive use?
ZLLS2000TA is not AEC-Q200 qualified. However, Diodes offers the automotive-grade ZLLS2000Q variant (separate datasheet DS32061), which undergoes extended temperature cycling, HTOL, and bias HAST testing per AEC-Q200 Rev D. ZLLS2000TA is intended for industrial and consumer applications only.
How does the 65 pF diode capacitance affect high-frequency switching performance?
The 65 pF capacitance at 30V reverse bias contributes to turn-on delay and increases switching loss in hard-switched topologies above 2 MHz. In practice, this value enables stable operation up to 5 MHz in well-damped buck converters, as verified by Diodes' application note AP02011 on high-frequency Schottky selection - no external snubber is needed below 3 MHz.
ZLLS2000TA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SOT-23-6
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 40 V
- Current - Average Rectified (Io):
- 2.2A
- Voltage - Forward (Vf) (Max) @ If:
- 540 mV @ 2 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 6 ns
- Current - Reverse Leakage @ Vr:
- 40 µA @ 30 V
- Capacitance @ Vr, F:
- 65pF @ 30V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-6
- Operating Temperature - Junction:
- 150°C (Max)
ZLLS2000TA FAQ
1.How can I place an order for ZLLS2000TA through Aetrix?
Please submit a Request for Quotation (RFQ) for ZLLS2000TA 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 ZLLS2000TA reliable?
The price and inventory of ZLLS2000TA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ZLLS2000TA is usually 5 days.
3.What payment methods are accepted for ZLLS2000TA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ZLLS2000TA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ZLLS2000TA?
ZLLS2000TA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ZLLS2000TA 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 ZLLS2000TA?
For technical support, including ZLLS2000TA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ZLLS2000TA requirements.
6.How does Aetrix verify that ZLLS2000TA is sourced from the original manufacturer or authorized distributors?
All ZLLS2000TA 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 ZLLS2000TA meets industry standards.
7.What is the process for return or replacement of ZLLS2000TA?
All ZLLS2000TA units undergo pre-shipment inspection (PSI). If there is an issue with ZLLS2000TA, 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 ZLLS2000TA part is unused and in its original packaging.
Return procedure for ZLLS2000TA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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