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Diodes Incorporated ZR40401F41TC
- Part No.:
- ZR40401F41TC
- Manufacturer:
- Diodes Incorporated
- Category:
- Voltage Reference
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
ZR40401F41TC.pdf
- Description:
- IC VREF SHUNT 1% SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:2,786
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Product details
Overview
ZR40401F41TC from Diodes Incorporated is a precision 4.1 V micropower shunt voltage reference IC using bandgap circuitry, operating from 60 µA to 15 mA with ±1% initial tolerance, 20 ppm/°C typical temperature coefficient, and 0.55 Ω typical slope resistance - deployed in battery-powered instrumentation and crystal oscillator biasing.
For engineers reviewing the ZR40401F41TC datasheet, ZR40401F41TC pinout, ZR4041TC application, or ZR40401F41TC equivalent, key selection criteria include low-quiescent-current stability, capacitor-free operation, SOT23-3 package compatibility, and TC performance across –40°C to +85°C industrial range.
Technical Context
The ZR40401F41TC functions as a two-terminal shunt reference, regulating voltage by sinking adjustable current through its cathode–anode path. Its bandgap core delivers stable 4.1 V output without external compensation, maintaining regulation under capacitive loads up to 1 µF.
It achieves fast turn-on (<5 µs settling) and robust transient immunity (withstands 200 mA surge), enabled by rugged 20 V process technology and low dynamic impedance (0.5–1.2 Ω at 1 mA, 100 Hz).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 4.100 V ±1% at 150 µA; enables precise ADC/DAC biasing and sensor excitation |
| Temp Coefficient | 20 ppm/°C typical; ensures ≤±1.2 mV drift over –40°C to +85°C |
| Slope Resistance | 0.55 Ω typical; minimizes load-induced voltage shift under varying sink current |
| Operating Current | 60 µA to 15 mA; supports ultra-low-power sleep modes and high-accuracy active measurement |
| Dynamic Impedance | 0.5 Ω min / 1.2 Ω max at 1 mA, 100 Hz; critical for noise-sensitive PLL and oscillator circuits |
| Wideband Noise | 90 µV(rms), 10 Hz–10 kHz; suitable for high-resolution data acquisition front-ends |
Pinout & Package
Package: SOT23-3 (suffix F), surface-mount, 330 mW power dissipation at 25°C ambient.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Pin 1) | Reference ground return path | Connected to system GND; forms current sink return node for regulation loop |
| Cathode (Pin 2) | Output voltage node | Provides regulated 4.1 V; connects to load or feedback divider; requires no bypass capacitor |
| No-connect (Pin 3) | Floating terminal | Internally unconnected; must remain unconnected per datasheet - not tied to Pin 2 |
Key Features
| Feature | Design Value |
|---|---|
| No external capacitor required | Enables compact PCB layout and eliminates capacitor aging/reliability concerns in portable designs |
| 20 ppm/°C tempco | Meets Class I accuracy requirements for industrial metering and calibration equipment |
| 0.55 Ω slope resistance | Reduces output voltage variation to <0.5 mV when load current changes by 1 mA |
| 60 µA minimum operating current | Supports microcontroller wake-up circuits and energy-harvesting systems with sub-100 µA supply budgets |
| Stable with capacitive loads | Permits direct connection to crystal oscillator tanks and ADC sample-hold capacitors without oscillation risk |
Applications
| Battery-Powered Portable Meters | Precision Crystal Oscillator Biasing |
|---|---|
Use Scenario: Handheld multimeters and portable gas detectors requiring stable reference during battery discharge from 4.2 V to 3.0 V. IC Role / Device Role / Timing Role: Shunt voltage reference providing fixed 4.1 V for ADC full-scale calibration and sensor signal conditioning. Use Value: Maintains ±0.5 LSB error over battery life due to low TC and load regulation. | Use Scenario: 32.768 kHz crystal oscillator circuits in real-time clocks where reference stability directly impacts timekeeping accuracy. IC Role / Device Role / Timing Role: Biasing network reference for CMOS oscillator amplifier stage, setting optimal DC operating point. Use Value: Enables ±5 ppm time drift over temperature via 20 ppm/°C TC and low-noise 4.1 V source. |
| Industrial Data Acquisition Front-Ends | Low-Power Sensor Signal Conditioning |
Use Scenario: 16-bit isolated analog input modules in PLCs measuring 4–20 mA loops and thermocouples. IC Role / Device Role / Timing Role: Precision reference for sigma-delta ADC and programmable gain amplifier offset trimming. Use Value: Achieves <12 ppm INL error contribution with 90 µV(rms) wideband noise floor. | Use Scenario: Wearable health monitors using resistive biosensors (e.g., ECG electrodes) powered by coin-cell batteries. IC Role / Device Role / Timing Role: Excitation reference for ratiometric bridge measurements and low-drift op-amp biasing. Use Value: Delivers <0.1% gain error stability across –10°C to +50°C ambient with 60 µA quiescent draw. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar shunt voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLVH431AIDBZR | Adjustable (2.5–36 V) vs. fixed 4.1 V; higher 100 µA min current; 50 ppm/°C TC | Requires external resistor divider; less suitable for space-constrained fixed-VREF layouts | Choose when design flexibility or higher voltage options outweigh TC and size penalties |
| MAX6008AEUR+T | Fixed 4.096 V; 15 ppm/°C TC; 65 µA min current; SOT23-3; higher cost | Superior TC and tighter 0.1% initial tolerance; optimized for metrology-grade systems | Choose for calibration equipment demanding <1 ppm/°C effective drift or MIL-STD-883 screening |
Compared with TLVH431AIDBZR and MAX6008AEUR+T, ZR40401F41TC offers the best balance of ultra-low min current (60 µA), industry-standard 1% tolerance, and cost-effective SOT23-3 footprint for mid-tier industrial and portable instrumentation.
Availability
ZR40401F41TC is available at Aetrix Electronics and suitable for battery-powered portable meters, precision crystal oscillator biasing, and industrial data acquisition systems requiring stable component supply with consistent parametric performance across production lots.
Supply support for ZR40401F41TC 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 semiconductor company specializing in discrete, analog, and mixed-signal devices for power management, signal integrity, and protection applications.
ZR4040 series belongs to Diodes' precision voltage reference product line, engineered specifically for low-power, high-stability applications in portable instrumentation, sensor interfaces, and timing circuits where minimal board area and predictable thermal behavior are essential.
FAQ
Is ZR40401F41TC compatible with ceramic capacitive loads?
Yes - the ZR40401F41TC is explicitly characterized as stable with capacitive loads up to 1 µF, including X7R and C0G ceramics. This eliminates need for series resistance or damping networks in crystal oscillator or sample-hold applications, verified per Figure 4-179 transient response plots and "stable with capacitive loads" feature statement.
What is the maximum reverse current ZR40401F41TC can safely handle during transients?
ZR40401F41TC withstands transient reverse currents up to 200 mA, as stated in Absolute Maximum Ratings and confirmed by rugged 20 V process design. This rating applies for short-duration pulses (≤10 µs), enabling robustness against ESD events and inductive switching spikes in industrial environments.
Does Pin 3 require termination or grounding?
No - Pin 3 is internally unconnected (NC) per the ordering table and connection diagrams. It must remain floating and not tied to any net, including Pin 2 or ground. Improper connection may cause parametric deviation or device failure, as confirmed by SOT23 suffix "F" pinout definition on page 4-180.
How does ZR40401F41TC achieve stable operation without an external capacitor?
Its internal bandgap architecture incorporates inherent phase margin and low-output-impedance design, eliminating need for external stabilization. Electrical characterization shows stable regulation under all specified load conditions (including 1 µF capacitive), validated by frequency-domain impedance plots and transient response waveforms in Figures 4-178–4-179.
ZR40401F41TC Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Reference Type:
- Shunt
- Output Type:
- Fixed
- Voltage - Output (Min/Fixed):
- 4.096V
- Voltage - Output (Max):
- -
- Current - Output:
- 15 mA
- Tolerance:
- ±1%
- Temperature Coefficient:
- 100ppm/°C
- Noise - 0.1Hz to 10Hz:
- -
- Noise - 10Hz to 10kHz:
- 90µVrms
- Voltage - Input:
- -
- Current - Supply:
- -
- Current - Cathode:
- 60 µA
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
ZR40401F41TC FAQ
1.How can I place an order for ZR40401F41TC through Aetrix?
Please submit a Request for Quotation (RFQ) for ZR40401F41TC 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 ZR40401F41TC reliable?
The price and inventory of ZR40401F41TC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ZR40401F41TC is usually 5 days.
3.What payment methods are accepted for ZR40401F41TC?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ZR40401F41TC transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ZR40401F41TC?
ZR40401F41TC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ZR40401F41TC 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 ZR40401F41TC?
For technical support, including ZR40401F41TC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ZR40401F41TC requirements.
6.How does Aetrix verify that ZR40401F41TC is sourced from the original manufacturer or authorized distributors?
All ZR40401F41TC 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 ZR40401F41TC meets industry standards.
7.What is the process for return or replacement of ZR40401F41TC?
All ZR40401F41TC units undergo pre-shipment inspection (PSI). If there is an issue with ZR40401F41TC, 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 ZR40401F41TC part is unused and in its original packaging.
Return procedure for ZR40401F41TC:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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