My Inquiry
My Account
Diodes Incorporated ZXRE4041FR
- Part No.:
- ZXRE4041FR
- Manufacturer:
- Diodes Incorporated
- Category:
- Voltage Reference
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
ZXRE4041FR.pdf
- Description:
- IC VREF SHUNT 3% SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:1,423
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
ZXRE4041FR 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 battery-powered instrumentation and portable A/D converters.
For engineers reviewing the ZXRE4041FR datasheet, ZXRE4041FR pinout, ZXRE4041FR application, or ZXRE4041FR 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 package compatibility with LM4041 footprints.
Technical Context
The ZXRE4041FR operates as a two-terminal shunt reference, sinking current to maintain a stable 1.225 V across its cathode-anode terminals. Its bandgap core achieves low drift via curvature compensation, with TC specified over –40°C to +125°C.
It functions unconditionally stable with any capacitive load up to 10 µF and maintains regulation from 30 µA to 12 mA supply current - enabling use in ultra-low-power sensor biasing and precision ADC reference rails where headroom is constrained.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reference Voltage | 1.225 V ±0.5% (C grade); fixed output for high-accuracy analog signal conditioning |
| Temp Coefficient | 20 ppm/°C typical; ensures ≤±1.2 mV drift over –40°C to +125°C |
| Min Operating Current | 30 µA; enables operation from microamp-level bias sources in energy-harvesting systems |
| Dynamic Impedance | 0.2–0.6 Ω at 1 mA; minimizes load-induced voltage shift in multiplexed reference networks |
| Wideband Noise | 60 µVrms (10 Hz–10 kHz); supports 16-bit+ ADC accuracy without external filtering |
| Capacitive Load Stability | Unconditional; eliminates need for series resistance or isolation when driving SAR ADC sample capacitors |
Pinout & Package
SOT23-3 package (JEDEC TO-236AB), 2.80–3.04 mm × 2.10–2.64 mm × 1.12 mm max height, gull-wing leads, RoHS-compliant green molding compound.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Anode (input) | Connected to system ground; forms current sink path with cathode |
| Pin 2 | Cathode (output) | Provides regulated 1.225 V reference node; connects to load and feedback divider |
| Pin 3 | No Connect / Floating | Internally unused; must be left open or tied to Pin 2 per datasheet guidance |
Key Features
| Feature | Design Value |
|---|---|
| LM4041 pin-compatible footprint | Direct drop-in replacement in existing SOT23-3 layouts without PCB rework |
| 30 µA knee current | Enables reliable startup and regulation from ultra-low-current sources (e.g., photodiode bias, thermistor bridges) |
| 0.2 Ω dynamic impedance | Reduces output voltage error under transient load steps in precision DAC buffer circuits |
| 60 µVrms noise floor | Preserves ENOB in 16-bit SAR ADCs without requiring external low-noise LDO post-regulation |
Applications
| Battery-Powered Instrumentation | Precision Data Acquisition Systems |
|---|---|
Use Scenario: Handheld multimeter using coin-cell battery with 10-year shelf life requirement. IC Role / Device Role / Timing Role: Shunt voltage reference providing excitation and scaling for 24-bit delta-sigma ADC. Use Value: 30 µA min current enables stable reference operation down to 2.2 V supply, extending usable battery range by 18% vs. higher-current alternatives. | Use Scenario: Industrial sensor node logging temperature/pressure with ±0.1% total measurement uncertainty. IC Role / Device Role / Timing Role: Primary reference for ratiometric bridge measurements and ADC full-scale calibration. Use Value: 20 ppm/°C TC and 0.5% initial tolerance ensure <±0.05% reference drift over –25°C to +75°C ambient, meeting Class A sensor spec. |
| Portable Communication Devices | Notebook & Tablet Power Management |
Use Scenario: LTE modem RF front-end requiring stable LO synthesizer bias under pulsed transmit load. IC Role / Device Role / Timing Role: Low-noise bias reference for VCO tuning diodes and PA bias control loops. Use Value: 60 µVrms noise prevents phase spur generation in 2.6 GHz synthesizers, maintaining EVM <2.5% under 20 MHz bandwidth. | Use Scenario: Dual-bank DDR4 memory reference in ultrabook with thermal throttling from 0°C to 95°C. IC Role / Device Role / Timing Role: Termination voltage (VTT) reference for memory bus termination regulators. Use Value: Unconditional capacitive stability allows direct connection to 4.7 µF ceramic decoupling caps on VTT rail, eliminating series resistor and layout area. |
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) via external resistor divider; 1.5% initial tolerance; 50 ppm/°C TC | Requires external resistors and board space; less accurate for fixed 1.225 V use | Select only if adjustable reference voltage is required; not recommended for direct 1.225 V replacement |
| MAX6008AEUR+T | Fixed 1.25 V output; 0.2% initial tolerance; 15 ppm/°C TC; 1.8 µA quiescent current | Lower voltage (1.25 V vs. 1.225 V); tighter TC but incompatible for 1.225 V-critical designs | Use only where 1.25 V is acceptable and sub-2 µA supply current is mandatory |
Compared with LM4041CIM3X-ADJ and MAX6008AEUR+T, the ZXRE4041FR uniquely delivers exact 1.225 V output with 0.5% tolerance and SOT23 pinout compatibility - making it the only drop-in solution for legacy LM4041-based designs requiring that specific voltage and accuracy.
Availability
ZXRE4041FR 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 ZXRE4041FR 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 power management, signal integrity, and precision analog solutions.
The ZXRE4041FR belongs to Diodes' precision voltage reference product line, engineered specifically for space-constrained, low-power applications demanding tight initial tolerance and low temperature drift - especially in portable and battery-operated systems.
FAQ
What is the maximum capacitive load the ZXRE4041FR can drive without oscillation?
The ZXRE4041FR is unconditionally stable and maintains regulation with any capacitive load up to at least 10 µF, as verified in Diodes' DS32169 Rev. 6-2 test data. No series resistance or isolation network is required - enabling direct connection to ADC sample capacitors and large ceramic decoupling caps.
Does ZXRE4041FR require an external resistor to set output voltage?
No. The ZXRE4041FR is a fixed 1.225 V shunt reference and does not require external resistors. It sinks current through its cathode to maintain regulation - unlike adjustable references such as the LM4041-ADJ, which rely on external feedback dividers.
Can ZXRE4041FR operate from a 2.0 V supply?
Yes. With a 30 µA minimum operating current and 1.225 V reference voltage, the ZXRE4041FR requires only ~1.25 V headroom (including dynamic impedance drop). It functions reliably down to 2.0 V supply in typical configurations, making it suitable for single-cell Li-ion or alkaline systems.
Is ZXRE4041FR RoHS-compliant and halogen-free?
Yes. The ZXRE4041FR uses Diodes Incorporated's green molding compound with no bromine (Br) or antimony (Sb), satisfying RoHS Directive 2011/65/EU and JEDEC JS709B halogen-free requirements. Full compliance documentation is available under Diodes' material declaration ID DIO-00000012.
ZXRE4041FR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Series:
- -
- Packaging:
- Bulk
- 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
ZXRE4041FR FAQ
1.How can I place an order for ZXRE4041FR through Aetrix?
Please submit a Request for Quotation (RFQ) for ZXRE4041FR 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 ZXRE4041FR reliable?
The price and inventory of ZXRE4041FR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ZXRE4041FR is usually 5 days.
3.What payment methods are accepted for ZXRE4041FR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ZXRE4041FR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ZXRE4041FR?
ZXRE4041FR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ZXRE4041FR 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 ZXRE4041FR?
For technical support, including ZXRE4041FR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ZXRE4041FR requirements.
6.How does Aetrix verify that ZXRE4041FR is sourced from the original manufacturer or authorized distributors?
All ZXRE4041FR 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 ZXRE4041FR meets industry standards.
7.What is the process for return or replacement of ZXRE4041FR?
All ZXRE4041FR units undergo pre-shipment inspection (PSI). If there is an issue with ZXRE4041FR, 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 ZXRE4041FR part is unused and in its original packaging.
Return procedure for ZXRE4041FR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ZXRE4041FR 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…
