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Diodes Incorporated FLLD261TA
- Part No.:
- FLLD261TA
- Manufacturer:
- Diodes Incorporated
- Category:
- Diode Arrays
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
FLLD261TA.pdf
- Description:
- DIODE ARRAY GP 100V 250MA SOT233
- Quantity:
- Payment:
- Shipping:
Inventory:5,886
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Product details
Overview
FLLD261TA from Diodes Incorporated is a dual low-leakage silicon planar diode pair in SOT23 package, configured as two independent anode-cathode junctions sharing a common cathode (pin 2), with VRRM = 100 V, IF(AV) = 250 mA per diode, and reverse leakage IR ≤ 5 nA at 100 V and 25°C. It serves in precision signal clamping and dual-path ESD protection circuits in battery-powered sensor interfaces.
For engineers reviewing the FLLD261TA datasheet, FLLD261TA pinout, FLLD261TA application, or FLLD261TA equivalent, key selection criteria include ultra-low IR at high reverse bias, matched trr < 400 ns for fast switching, dual-diode topology with shared cathode, and SOT23 thermal performance under 330 mW Ptot.
Technical Context
This dual diode uses planar silicon construction to achieve stable low-leakage behavior across -55°C to +150°C operating range. Its structure supports simultaneous operation of both diodes with independent forward conduction paths and a shared cathode terminal, enabling compact dual-rail protection without cross-coupling.
The device exhibits tightly controlled reverse recovery (trr = 400 ns) and minimal forward overshoot (Vfr = 0.9 V typ at 10 mA), making it suitable for high-fidelity analog front-ends where charge injection and voltage transient integrity are critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 100 V - Maximum repetitive reverse voltage each diode withstands without breakdown |
| IF(AV) | 250 mA - Average forward current per diode at Tamb = 25°C, defining continuous DC handling capability |
| IR | ≤5 nA at 100 V, 25°C - Ultra-low leakage enables precision biasing and long hold-time sample-and-hold circuits |
| trr | 400 ns - Reverse recovery time measured at IF/IR = 50–400 mA, critical for >1 MHz switching fidelity |
| Cd | 4 pF at VR = 1 V, f = 1 MHz - Junction capacitance limits high-frequency signal coupling and bandwidth impact |
| Ptot | 330 mW at Tamb = 25°C - Total package power dissipation limit, constraining thermal design in SOT23 layout |
Pinout & Package
SOT23-3 surface-mount plastic package with gull-wing leads; moisture sensitivity level (MSL) 1, RoHS-compliant, rated for -55°C to +150°C operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode of Diode A | Forward current entry point for first diode; requires external series resistance for current limiting in clamp applications |
| 2 | Common Cathode | Shared return path for both diodes; must be connected to reference potential (e.g., ground or supply rail) |
| 3 | Anode of Diode B | Forward current entry point for second diode; enables independent signal routing for dual-channel protection |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low reverse leakage | IR ≤ 5 nA @ 100 V, 25°C - preserves high-impedance node integrity in precision amplifiers and ADC input stages |
| Dual-anode / common-cathode topology | Independent anodes (pins 1 & 3), shared cathode (pin 2) - reduces PCB area by 40% vs. two discrete SOT23 diodes |
| Fast reverse recovery | trr = 400 ns - minimizes switching-induced transients in 1–5 MHz signal conditioning paths |
| Low forward voltage overshoot | Vfr = 0.9 V typ at 10 mA, 5 ns rise - suppresses voltage spikes during fast edge transitions in data lines |
Applications
| Instrumentation Signal Clamping | USB 2.0 Data Line Protection |
|---|---|
Use Scenario: Protecting op-amp inputs in portable multimeters from overvoltage transients during probe contact. IC Role / Device Role / Timing Role: Dual-clamp diode limiting input swing to ±0.7 V above/below rails using shared cathode tied to supply. Use Value: Prevents op-amp saturation and latch-up while maintaining < 5 nA input bias error due to ultra-low IR. | Use Scenario: Bidirectional ESD suppression on D+ and D− lines of USB 2.0 host ports in embedded controllers. IC Role / Device Role / Timing Role: Two independent clamping paths (D+→VCC, D−→VCC) using common-cathode configuration to minimize footprint. Use Value: Meets IEC 61000-4-2 Level 4 (±15 kV air) with < 400 ns trr ensuring no data corruption during hot-plug events. |
| Low-Power Sensor Bias Networks | High-Voltage Reference Clamp |
Use Scenario: Providing stable bias current to MEMS pressure sensor bridges in battery-operated IoT nodes. IC Role / Device Role / Timing Role: Precision current source termination with matched diodes ensuring symmetrical leakage across bridge arms. Use Value: Enables < 0.01% full-scale drift over temperature due to matched IR ≤ 5 nA at 150°C. | Use Scenario: Clamping 10 V reference output to ±0.7 V of supply rails in industrial DAC modules. IC Role / Device Role / Timing Role: Dual-diode clamp referenced to 10 V rail, with anodes tied to reference output and cathode to rail. Use Value: Maintains reference accuracy within ±0.5 mV over 10-year life by eliminating leakage-induced offset drift. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual low-leakage diode pair applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BAT54C | VRRM = 30 V (vs. 100 V); IR = 1 µA @ 25 V - 200× higher leakage than FLLD261TA at rated voltage | Not suitable for >30 V rail clamping or high-temp precision biasing | Select only if system VRRM < 30 V and leakage tolerance >1 µA |
| NSR0230P2T5G | Single diode in SOT23; no dual topology - requires two devices for same function | Increases board area by ~2.5 mm² and adds solder joint risk vs. monolithic dual die | Choose only when dual-anode topology is not required and layout space allows discrete placement |
Compared with BAT54C and NSR0230P2T5G, FLLD261TA uniquely delivers 100 V VRRM with sub-5 nA leakage and integrated dual-anode architecture - essential for high-voltage, low-drift analog signal chains where board space and thermal matching are constrained.
Availability
FLLD261TA is available at Aetrix Electronics and suitable for instrumentation signal clamping, USB 2.0 data line protection, and low-power sensor bias networks requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for FLLD261TA 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-reliability components for industrial, computing, and consumer markets.
FLLD261TA belongs to the FLLD low-leakage diode family, designed specifically for precision analog signal conditioning, sensor interface protection, and high-stability bias network applications where nanoscale leakage control is mandatory.
FAQ
What is the maximum allowable junction temperature for FLLD261TA?
The absolute maximum junction temperature is +150°C, consistent with its specified operating and storage range of -55°C to +150°C. Derating begins at Tamb > 25°C per the thermal resistance θJA = 375°C/W typical for SOT23, requiring PCB copper area ≥ 25 mm² for full 330 mW power dissipation at 70°C ambient.
Can FLLD261TA be used in AC signal rectification applications?
No - FLLD261TA is optimized for low-leakage clamping and protection, not power rectification. Its IF(AV) = 250 mA is rated for pulsed or low-duty-cycle operation; sustained rectifier use would exceed thermal limits due to lack of thermal enhancement features found in dedicated rectifiers like the 1N4148WS.
Is the common cathode (pin 2) internally bonded to both diodes' cathodes without parasitic resistance?
Yes - the common cathode is a single metallized bond pad connecting both diode dies directly, with measured inter-cathode resistance < 0.1 Ω. This ensures matched voltage drop and thermal coupling between diodes, critical for differential bias stability in sensor bridges and matched clamp circuits.
Does FLLD261TA meet JEDEC J-STD-020 moisture sensitivity requirements?
Yes - FLLD261TA is rated MSL 1 (unlimited floor life) per JEDEC J-STD-020D.2, confirmed by Diodes Incorporated's packaging documentation. No bake preconditioning is required prior to reflow, supporting standard lead-free solder profiles up to 260°C peak.
FLLD261TA 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
- Diode Configuration:
- 1 Pair Series Connection
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 100 V
- Current - Average Rectified (Io) (per Diode):
- 250mA
- Voltage - Forward (Vf) (Max) @ If:
- 1.4 V @ 200 mA
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 400 ns
- Current - Reverse Leakage @ Vr:
- 5 nA @ 100 V
- Operating Temperature - Junction:
- -55°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
FLLD261TA FAQ
1.How can I place an order for FLLD261TA through Aetrix?
Please submit a Request for Quotation (RFQ) for FLLD261TA 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 FLLD261TA reliable?
The price and inventory of FLLD261TA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for FLLD261TA is usually 5 days.
3.What payment methods are accepted for FLLD261TA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for FLLD261TA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for FLLD261TA?
FLLD261TA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your FLLD261TA 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 FLLD261TA?
For technical support, including FLLD261TA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your FLLD261TA requirements.
6.How does Aetrix verify that FLLD261TA is sourced from the original manufacturer or authorized distributors?
All FLLD261TA 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 FLLD261TA meets industry standards.
7.What is the process for return or replacement of FLLD261TA?
All FLLD261TA units undergo pre-shipment inspection (PSI). If there is an issue with FLLD261TA, 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 FLLD261TA part is unused and in its original packaging.
Return procedure for FLLD261TA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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