My Inquiry
My Account
Diodes Incorporated ZXRE4041FRSTZ
- Part No.:
- ZXRE4041FRSTZ
- Manufacturer:
- Diodes Incorporated
- Category:
- Voltage Reference
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
ZXRE4041FRSTZ.pdf
- Description:
- IC VREF SHUNT 3% SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:2,824
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
ZXRE4041FRSTZ from Diodes Incorporated is a precision micropower bandgap voltage reference delivering 1.225 V ±0.5% (C grade) with 20 ppm/°C typical temperature coefficient, 30 µA minimum operating current, and unconditional stability into capacitive loads - used in portable A/D converters and battery-powered instrumentation.
For engineers reviewing the ZXRE4041FRSTZ datasheet, ZXRE4041FRSTZ pinout, ZXRE4041FRSTZ application, or ZXRE4041FRSTZ equivalent, key selection criteria include knee current (30 µA), reverse dynamic impedance (0.2–0.6 Ω), wideband noise (60 µVrms), tolerance grade, and SOT23-3 compatibility with LM4041 footprints.
Technical Context
The ZXRE4041FRSTZ implements a two-terminal shunt topology with bandgap-derived reference core, optimized for low-quiescent-current operation across 30 µA to 12 mA load range. Its design eliminates need for external series resistor in many configurations due to stable regulation at microampere-level currents.
It achieves thermal stability via curvature-compensated bandgap architecture, yielding 20 ppm/°C typical TC over −40°C to +125°C. The device maintains <1 mV reverse breakdown change from 30 µA to 1 mA, confirming robust current-insensitive regulation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reference Voltage | 1.225 V ±0.5% (C grade) - defines absolute accuracy of analog signal scaling in precision ADCs |
| Temp Coefficient | 20 ppm/°C typical - ensures ≤0.25 mV drift over 0–70°C ambient, critical for portable metering |
| Knee Current | 30 µA - minimum current required to initiate regulation; enables ultra-low-power sleep-mode biasing |
| Dynamic Impedance | 0.2–0.6 Ω @ 1 mA - provides low AC impedance path for noise filtering in reference buffers |
| Wideband Noise | 60 µVrms (10 Hz–10 kHz) - limits quantization error floor in 16-bit+ data acquisition systems |
| Capacitive Load Stability | Unconditionally stable - allows direct connection to >1 µF bypass caps without oscillation risk |
| Operating Current Range | 30 µA to 12 mA - supports both micropower sensor nodes and higher-drive precision supplies |
Pinout & Package
SOT23-3 package: 3-pin surface-mount plastic case (JEDEC TO-236AB), 2.80 × 2.64 × 1.12 mm body, gull-wing leads, RoHS-compliant green molding compound.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Pin 1) | Current sink input | Connected to supply rail via series resistor; regulates by sinking excess current to GND |
| Cathode (Pin 2) | Reference output | Provides stable 1.225 V node; must be decoupled locally for noise-sensitive circuits |
| NC / Float (Pin 3) | No-connect / optional tie | Internally unconnected; may be left open or tied to Pin 2 per layout best practice for noise immunity |
Key Features
| Feature | Design Value |
|---|---|
| LM4041 pin-compatible footprint | Enables drop-in replacement in existing designs without PCB rework or layout changes |
| 0.5% initial tolerance (C grade) | Reduces post-fabrication calibration steps in production test for portable medical sensors |
| 20 ppm/°C tempco | Meets Class I accuracy requirements for handheld multimeters operating across consumer temperature ranges |
| 30 µA knee current | Supports energy harvesting applications where source current is limited to sub-100 µA |
| Unconditional capacitive stability | Eliminates need for isolation resistors when driving SAR ADC reference inputs with large hold capacitors |
Applications
| Battery-Powered Instrumentation | Precision Data Acquisition |
|---|---|
Use Scenario: Handheld digital multimeter powered by two AA cells with auto-ranging ADC front-end. IC Role / Device Role / Timing Role: Shunt voltage reference providing excitation and scaling reference for 24-bit sigma-delta ADC. Use Value: 0.5% tolerance and 20 ppm/°C TC ensure full-scale accuracy remains within ±0.1% over 0–50°C without recalibration. | Use Scenario: Industrial sensor node measuring thermocouple outputs with cold-junction compensation. IC Role / Device Role / Timing Role: Stable reference for programmable gain instrumentation amplifier and 16-bit SAR ADC. Use Value: 60 µVrms noise and 0.6 Ω dynamic impedance prevent reference-induced quantization noise degradation. |
| Portable Communication Devices | Notebook System Monitoring |
Use Scenario: LTE modem module requiring precise RF power detector biasing under variable battery voltage. IC Role / Device Role / Timing Role: Low-current reference for logarithmic amplifier controlling transmit power feedback loop. Use Value: 30 µA knee current enables regulation even during deep-sleep states with <100 µA system leakage. | Use Scenario: Embedded controller monitoring CPU core voltage, memory VDDQ, and battery fuel gauge in ultrabook platform. IC Role / Device Role / Timing Role: Shared reference for multiple 12-bit internal ADC channels performing rail health checks. Use Value: SOT23-3 size and unconditional stability allow placement near SoC die with minimal board area impact. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar shunt voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM4041CIM3X-ADJ | Adjustable output (1.24–10 V); 1% tolerance; 50 ppm/°C TC; 60 µA knee current | Requires external resistor divider; less accurate and noisier (120 µVrms) | Choose only if adjustable reference voltage is required; not suitable for fixed 1.225 V use cases |
| MAX6008AEUR+T | Fixed 1.25 V output; 0.2% tolerance; 15 ppm/°C TC; 2.5 µA knee current; SC70-3 package | Lower knee current enables lower-power sleep modes but requires tighter layout control due to smaller pad pitch | Select when highest initial accuracy and lowest TC are mandatory, and board space permits SC70 routing |
Compared with LM4041CIM3X-ADJ and MAX6008AEUR+T, the ZXRE4041FRSTZ uniquely balances 0.5% tolerance, 20 ppm/°C TC, 30 µA knee current, and proven SOT23-3 manufacturability - making it optimal for cost-sensitive, high-volume portable instrumentation where fixed 1.225 V is specified.
Availability
ZXRE4041FRSTZ is available at Aetrix Electronics and suitable for battery-powered instrumentation, precision data acquisition systems, and portable communication devices requiring stable component supply with guaranteed long-term sourcing.
Supply support for ZXRE4041FRSTZ 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, low-power, and space-constrained solutions for industrial, computing, and consumer markets.
The ZXRE4041 belongs to Diodes' precision voltage reference product line, engineered specifically for micropower, low-drift, and footprint-constrained applications in portable and battery-operated systems.
FAQ
What is the maximum capacitive load the ZXRE4041FRSTZ can drive without instability?
The ZXRE4041FRSTZ is unconditionally stable and does not require external compensation, supporting direct connection to ≥1 µF ceramic bypass capacitors on its cathode (Pin 2). This behavior is verified across the full −40°C to +125°C temperature range and 30 µA to 12 mA operating current, eliminating need for series isolation resistors in ADC reference buffer designs.
Can ZXRE4041FRSTZ replace LM4041CIM3X in existing PCB layouts?
Yes - ZXRE4041FRSTZ uses the identical SOT23-3 package outline and pin configuration (Anode–Cathode–NC) as LM4041CIM3X. It offers tighter 0.5% tolerance and lower 20 ppm/°C temperature coefficient versus LM4041's 1% and 50 ppm/°C, enabling immediate performance upgrade without layout modification.
What is the minimum supply voltage needed to operate ZXRE4041FRSTZ at 1.225 V output?
The minimum supply voltage is determined by the sum of reference voltage plus forward drop across the series resistor. With 30 µA knee current and typical 1.225 V output, supply must exceed 1.225 V by enough margin to sustain ≥30 µA through the chosen resistor - e.g., at 3.3 V supply, a 68 kΩ resistor delivers ~30 µA, satisfying regulation onset.
Does ZXRE4041FRSTZ support operation down to 0 V input?
No - as a two-terminal shunt reference, ZXRE4041FRSTZ requires a minimum anode-to-cathode voltage of 1.225 V to begin regulating. Below this threshold, it behaves as an open circuit. It does not regulate or clamp below its reference voltage and has no defined operation at 0 V anode potential relative to cathode.
ZXRE4041FRSTZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Series:
- -
- Packaging:
- Tape & Box (TB)
- Product Status:
- Obsolete
- Reference Type:
- Shunt
- Output Type:
- Fixed
- Voltage - Output (Min/Fixed):
- 1.225V
- Voltage - Output (Max):
- -
- Current - Output:
- 12 mA
- Tolerance:
- ±3%
- Temperature Coefficient:
- 100ppm/°C
- Noise - 0.1Hz to 10Hz:
- -
- Noise - 10Hz to 10kHz:
- 60µVrms
- Voltage - Input:
- -
- Current - Supply:
- -
- Current - Cathode:
- 30 µA
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
ZXRE4041FRSTZ FAQ
1.How can I place an order for ZXRE4041FRSTZ through Aetrix?
Please submit a Request for Quotation (RFQ) for ZXRE4041FRSTZ 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 ZXRE4041FRSTZ reliable?
The price and inventory of ZXRE4041FRSTZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ZXRE4041FRSTZ is usually 5 days.
3.What payment methods are accepted for ZXRE4041FRSTZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ZXRE4041FRSTZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ZXRE4041FRSTZ?
ZXRE4041FRSTZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ZXRE4041FRSTZ 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 ZXRE4041FRSTZ?
For technical support, including ZXRE4041FRSTZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ZXRE4041FRSTZ requirements.
6.How does Aetrix verify that ZXRE4041FRSTZ is sourced from the original manufacturer or authorized distributors?
All ZXRE4041FRSTZ 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 ZXRE4041FRSTZ meets industry standards.
7.What is the process for return or replacement of ZXRE4041FRSTZ?
All ZXRE4041FRSTZ units undergo pre-shipment inspection (PSI). If there is an issue with ZXRE4041FRSTZ, 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 ZXRE4041FRSTZ part is unused and in its original packaging.
Return procedure for ZXRE4041FRSTZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ZXRE4041FRSTZ Tags
-
TL431AIDBZR
Texas Instruments
-
TL431BQDBZR
Texas Instruments
-
AN431AN-ATRG1
Diodes Incorporated
-
LM4040CYM3-2.5-TR
Microchip Technology
-
LM4040CYM3-4.1-TR
Microchip Technology
-
LM4040EIM3-2.5/NOPB
Texas Instruments
-
AZ431LBNTR-G1
Diodes Incorporated
-
LM4040D20IDBZR
Texas Instruments
-
LM4041DIM3-ADJ/NOPB
Texas Instruments
-
LM4040DIM3X-2.5/NOPB
Texas Instruments
-
LM4040DIM3-2.5/NOPB
Texas Instruments
-
AZ431LANTR-G1
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…
