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Diodes Incorporated ZR40402F50TA
- Part No.:
- ZR40402F50TA
- Manufacturer:
- Diodes Incorporated
- Category:
- Voltage Reference
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
ZR40402F50TA.pdf
- Description:
- IC VREF SHUNT 2% SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:3,537
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Product details
Overview
ZR40402F50TA from Diodes Incorporated is a precision micropower shunt voltage reference delivering 5.0 V ±2% output with 20 ppm/°C typical temperature coefficient, 0.33 Ω typical slope resistance, and stable operation from 60 µA to 15 mA. It uses bandgap circuitry, requires no external capacitor, and achieves stable regulation in <10 µs-ideal for battery-powered instrumentation and portable data acquisition systems.
For engineers reviewing the ZR40402F50TA datasheet, ZR40402F50TA pinout, ZR40402F50TA application, or ZR40402F50TA equivalent, key selection criteria include low operating current range, capacitive-load stability, automotive-grade temperature performance (–55°C to +125°C), and SOT23-3 package compatibility with space-constrained PCB layouts.
Technical Context
The ZR40402F50TA operates as a two-terminal shunt reference, sinking current to maintain a precise 5.0 V reverse breakdown voltage across its cathode-anode terminals. Its bandgap-based core ensures monotonic TC behavior and minimal drift over –55°C to +125°C.
It exhibits low dynamic impedance (0.4 Ω typical at 1 mA, 100 Hz) and wideband noise of 105 µVrms (10 Hz–10 kHz), enabling high-accuracy ADC biasing and precision analog signal conditioning without external filtering.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 5.0 V ±2% - tightly regulated reference for 12-bit+ SAR ADCs and low-drift op-amp biasing |
| Temp Coefficient | 20 ppm/°C typical (–40°C to +85°C) - supports stable calibration over industrial ambient ranges |
| Slope Resistance | 0.33 Ω typical - minimizes load-induced voltage shift under varying sink current |
| Operating Current | 60 µA to 15 mA - enables ultra-low-power sleep modes and full-range active operation |
| Transient Response | <10 µs settling time - maintains reference integrity during rapid load switching in portable systems |
| Capacitive Load Stability | Stable with any capacitive load - eliminates need for series resistor or external compensation |
Pinout & Package
SOT23-3 package (suffix F); pin 1 = anode (floating or tied to pin 2), pin 2 = cathode (output), pin 3 = anode - standard shunt configuration requiring external series resistor for current setting.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 (Anode) | Reference anode terminal | Internally connected to pin 2 in some variants; used for Kelvin sensing or optional tie to pin 2 to reduce thermal EMF error |
| Pin 2 (Cathode) | Reference output node | 5.0 V regulated voltage point; sinks current from external supply via series resistor |
| Pin 3 (Anode) | Reference anode terminal | Redundant anode connection; electrically identical to pin 1; improves thermal symmetry in layout |
Key Features
| Feature | Design Value |
|---|---|
| No external capacitor required | Enables direct integration into compact sensor nodes without stability-compromising layout constraints |
| 20 ppm/°C tempco (typ) | Supports ±0.1% total voltage error over –40°C to +85°C without trimming |
| 0.33 Ω slope resistance (typ) | Limits output deviation to <5 mV across full 60 µA–15 mA operating range |
| Stable with capacitive loads | Allows direct connection to ADC reference inputs or op-amp feedback networks without isolation resistors |
| <10 µs transient response | Maintains reference accuracy during burst-mode sampling or fast power-state transitions |
Applications
| Battery-Powered Multimeters | Precision RTD Signal Conditioning |
|---|---|
Use Scenario: Handheld digital multimeter requiring stable 5.0 V reference for 16-bit delta-sigma ADC during intermittent measurement cycles. IC Role / Device Role / Timing Role: Shunt voltage reference providing excitation and conversion reference for analog front-end. Use Value: Low 60 µA minimum current enables >1-year battery life; 20 ppm/°C TC avoids recalibration across field temperature swings. | Use Scenario: Industrial temperature transmitter using 4-wire RTD with programmable gain instrumentation amplifier. IC Role / Device Role / Timing Role: Precision ratiometric reference for excitation current source and ADC reference path. Use Value: Matched TC between reference and RTD bridge minimizes system-level drift; 0.33 Ω slope resistance prevents gain error from current-source loading. |
| Portable Data Loggers | Automotive Cabin Sensor Modules |
Use Scenario: Solar-charged environmental logger recording temperature/humidity at 10-second intervals. IC Role / Device Role / Timing Role: Primary voltage reference for microcontroller ADC and analog sensor interface. Use Value: Micropower operation extends runtime between charges; capacitive-load stability allows direct coupling to MCU VREF pin. | Use Scenario: Occupancy sensor module in vehicle cabin operating across –40°C to +105°C ambient. IC Role / Device Role / Timing Role: Temperature-stable reference for IR proximity detector signal chain and wake-up comparator. Use Value: Automotive-grade temp range (–55°C to +125°C) and 125 ppm/°C max TC ensure functional safety compliance without derating. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar shunt voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TL431ACDBVR | 2.5 V nominal output; adjustable via external resistors; higher 2 mA min current; 50 ppm/°C max TC | Requires resistor network for 5 V setup; less suitable for ultra-low-power sleep states | Prefer when design already uses TL431 footprint or needs adjustable output |
| ADR3450ARJZ-R7 | 5.0 V fixed output; 3 ppm/°C max TC; 100 µA min current; SOIC-8 package | Higher precision but larger size and cost; not drop-in for SOT23 space constraints | Choose when sub-10 ppm/°C system-level drift budget demands superior TC performance |
Compared with TL431ACDBVR and ADR3450ARJZ-R7, the ZR40402F50TA offers optimal balance of SOT23 size, micropower operation (60 µA min), and 20 ppm/°C typical TC-making it uniquely suited for space- and energy-constrained portable instrumentation where absolute highest precision is secondary to integration simplicity.
Availability
ZR40402F50TA is available at Aetrix Electronics and suitable for battery-powered test equipment, portable data loggers, and automotive cabin sensor modules requiring stable component supply with long-term lifecycle visibility.
Supply support for ZR40402F50TA 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 industrial, computing, consumer, and communications markets.
The ZR4040 series belongs to Diodes' precision voltage reference product line, engineered specifically for low-power, high-stability applications in portable and automotive environments where size, current efficiency, and temperature robustness are critical.
FAQ
What is the minimum operating current for reliable regulation?
The ZR40402F50TA maintains regulation down to 60 µA at 25°C, with a guaranteed minimum of 30 µA across –55°C to +125°C. Below this threshold, output voltage may deviate beyond specified tolerance due to insufficient bandgap bias current.
Can it drive a 10 nF capacitive load directly?
Yes-the device is explicitly characterized as stable with any capacitive load, including 10 nF. No series isolation resistor or external compensation is needed, unlike many older shunt references that require careful RC damping.
Is the SOT23-3 pinout compatible with standard Zener diode footprints?
No-ZR40402F50TA uses non-standard SOT23-3 pinout: pin 1 and pin 3 are both anode connections (with pin 1 optionally tied to pin 2), and pin 2 is the cathode. It is not a drop-in replacement for generic 5.0 V Zeners without layout revision.
Does it meet AEC-Q200 stress testing requirements?
No-while rated for –55°C to +125°C operation and qualified for automotive ambient conditions, the ZR40402F50TA is not AEC-Q200 qualified. For AEC-Q200-compliant alternatives, consider Diodes' AP431xQ series or ON Semiconductor's TLVH431Q.
ZR40402F50TA 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):
- 5V
- Voltage - Output (Max):
- -
- Current - Output:
- 15 mA
- Tolerance:
- ±2%
- Temperature Coefficient:
- 100ppm/°C
- Noise - 0.1Hz to 10Hz:
- -
- Noise - 10Hz to 10kHz:
- 105µVrms
- 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
ZR40402F50TA FAQ
1.How can I place an order for ZR40402F50TA through Aetrix?
Please submit a Request for Quotation (RFQ) for ZR40402F50TA 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 ZR40402F50TA reliable?
The price and inventory of ZR40402F50TA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ZR40402F50TA is usually 5 days.
3.What payment methods are accepted for ZR40402F50TA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ZR40402F50TA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ZR40402F50TA?
ZR40402F50TA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ZR40402F50TA 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 ZR40402F50TA?
For technical support, including ZR40402F50TA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ZR40402F50TA requirements.
6.How does Aetrix verify that ZR40402F50TA is sourced from the original manufacturer or authorized distributors?
All ZR40402F50TA 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 ZR40402F50TA meets industry standards.
7.What is the process for return or replacement of ZR40402F50TA?
All ZR40402F50TA units undergo pre-shipment inspection (PSI). If there is an issue with ZR40402F50TA, 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 ZR40402F50TA part is unused and in its original packaging.
Return procedure for ZR40402F50TA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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