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Diodes Incorporated LM4040B30H5TA
- Part No.:
- LM4040B30H5TA
- Manufacturer:
- Diodes Incorporated
- Category:
- Voltage Reference
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
LM4040B30H5TA.pdf
- Description:
- IC VREF SHUNT 0.2% SC70-5
- Quantity:
- Payment:
- Shipping:
Inventory:3,407
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Product details
Overview
LM4040B30H5TA from Diodes Incorporated is a precision 3.0V shunt voltage reference in SC70-5 package with ±0.2% initial tolerance at +25°C, 20ppm/°C max temperature coefficient over –40°C to +125°C, and stable operation from 60µA to 15mA reverse current - used for calibration and regulation in portable instrumentation and battery-powered data acquisition systems.
For engineers reviewing the LM4040B30H5TA datasheet, LM4040B30H5TA pinout, LM4040B30H5TA application, or LM4040B30H5TA equivalent, key selection criteria include reverse breakdown voltage accuracy, low thermal drift, capacitive load stability, and compatibility with space-constrained PCB layouts requiring high-precision analog references.
Technical Context
This device operates as a two-terminal bandgap-based shunt reference, regulating voltage by sinking variable current through its cathode-anode path. Its internal architecture maintains tight output voltage control without external capacitors and tolerates wide variations in supply current and load conditions.
It delivers 3.0V nominal reverse breakdown voltage with ±6mV (±0.2%) tolerance at +25°C, supports full industrial temperature range (–40°C to +125°C), and exhibits ≤100ppm/°C max tempco - enabling accurate voltage scaling in ADC/DAC biasing and sensor excitation circuits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reference Voltage | 3.0V nominal reverse breakdown voltage at 100µA test current |
| Initial Tolerance | ±0.2% at +25°C - ensures <±6mV absolute error in factory-calibrated systems |
| Tempco (max) | 100ppm/°C over –40°C to +125°C - limits drift to ±30mV across full temperature range |
| Operating Current | 60µA to 15mA reverse current - supports ultra-low-power sleep modes and high-accuracy active regulation |
| Noise (10Hz–10kHz) | 35µVRMS - minimizes added uncertainty in high-resolution measurement front-ends |
| Dynamic Impedance | 0.4Ω at 1mA - provides low AC impedance for stable feedback in precision regulators |
| Long-Term Stability | 120ppm after 1000 hours - enables reliable performance in unattended monitoring equipment |
Pinout & Package
SC70-5 package (end-of-life variant) with 5 terminals; pin 1 = Anode, pin 2 = Cathode, pins 3–5 = No Connect (N/C). Pin 2 must be left floating or connected to pin 1 per datasheet layout guidance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode | Reference ground node; connects to system GND or low-impedance return path |
| 2 | Cathode | Output node; sinks regulated current to maintain 3.0V across external load/resistor |
| 3 | N/C | No internal connection; must remain unconnected or tied to pin 2 per layout rules |
| 4 | N/C | No internal connection; electrically isolated from die; no routing required |
| 5 | N/C | No internal connection; unused terminal; avoid solder bridging or trace coupling |
Key Features
| Feature | Design Value |
|---|---|
| No output capacitor required | Stable regulation without external bypass - reduces BOM count and board area in compact designs |
| Low noise (35µVRMS) | Enables sub-16-bit ADC accuracy without additional filtering stages |
| Wide operating current range | 60µA minimum current allows use in µA-level standby power domains |
| Capacitive load tolerant | Immune to instability from PCB trace capacitance or nearby decoupling caps |
| Green, RoHS-compliant packaging | SOT23 and SC70-5 variants meet EU Directive 2015/863/EU halogen/antimony limits |
Applications
| Portable Instrumentation | Battery-Powered Equipment |
|---|---|
Use Scenario: Handheld multimeter front-end voltage scaling and ADC reference. IC Role / Device Role / Timing Role: Shunt reference providing stable 3.0V reference for 24-bit sigma-delta ADC conversion. Use Value: ±0.2% initial tolerance and 100ppm/°C tempco ensure <0.01% full-scale error across operating temperature range. |
Use Scenario: Low-power gas sensor module with microcontroller and analog front-end. IC Role / Device Role / Timing Role: Precision bias source for electrochemical sensor amplifier and ADC reference rail. Use Value: 60µA minimum operating current enables continuous sensing during battery sleep cycles without reference dropout. |
| Precision Power Supplies | Data Acquisition Systems |
Use Scenario: Programmable bench power supply output voltage calibration circuit. IC Role / Device Role / Timing Role: Secondary reference for DAC-controlled feedback loop trimming. Use Value: 120ppm long-term stability ensures calibration validity over 12-month service intervals. |
Use Scenario: Industrial 4–20mA transmitter with HART modulation and local analog sensing. IC Role / Device Role / Timing Role: Reference for RTD bridge excitation and signal conditioning gain setting. Use Value: Low 35µVRMS noise prevents degradation of 20-bit measurement resolution in noisy plant environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar shunt voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM4040B30FTA | SOT23 package (active production); identical electrical specs; pin-compatible but different footprint | Requires PCB redesign for SOT23 pad layout; eliminates EOL risk and improves supply continuity | Select when new design allows SOT23 placement and long-term sourcing is prioritized over legacy footprint reuse. |
| TLVH431BIDBZR | Adjustable 1.24V–18V shunt regulator; ±0.5% initial tolerance; higher 90ppm/°C tempco; requires two external resistors | Offers programmability but adds component count and resistor matching sensitivity | Choose only if voltage flexibility outweighs fixed-reference accuracy, noise, and simplicity advantages. |
Compared with LM4040B30H5TA, LM4040B30FTA removes EOL risk while preserving all electrical performance, whereas TLVH431BIDBZR trades precision and noise performance for adjustability - making the original part optimal for fixed 3.0V, low-noise, minimal-BOM applications.
Availability
LM4040B30H5TA is available at Aetrix Electronics and suitable for portable instrumentation, battery-powered equipment, and precision data acquisition systems requiring stable component supply despite its end-of-life status.
Supply support for LM4040B30H5TA 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.
The LM4040 series belongs to Diodes' precision analog portfolio, engineered specifically for high-accuracy, low-power voltage referencing in space- and energy-constrained systems.
FAQ
Is LM4040B30H5TA still in production?
No - LM4040B30H5TA is officially End-of-Life (EOL) per Diodes Incorporated's ordering information table. It remains available through authorized distributors' remaining inventory, but no new wafer fabrication or packaging is scheduled. Aetrix Electronics maintains traceable stock with full lot documentation for legacy design support.
Can LM4040B30H5TA be substituted with LM4040B30FTA on the same PCB?
No - LM4040B30FTA uses SOT23 (3-pin) packaging, while LM4040B30H5TA uses SC70-5 (5-pin) with different pin count, spacing, and thermal pad configuration. Direct PCB substitution requires layout revision. The SOT23 variant offers identical electrical performance and active production status.
What is the maximum capacitive load the device can drive without oscillation?
The LM4040B30H5TA is explicitly designed to be capacitive-load tolerant with no minimum or maximum specified limit in the datasheet. It remains stable with typical PCB trace capacitance and standard 0.1µF ceramic decoupling capacitors placed near the cathode, eliminating need for series resistance or isolation networks.
Does this part meet AEC-Q100 automotive qualification?
No - LM4040B30H5TA is not AEC-Q100 qualified. Diodes offers the automotive-grade LM4040Q series (e.g., LM4040Q30IDBZR) with separate datasheet, extended reliability testing, and guaranteed operation over –40°C to +125°C with automotive PPAP support. This part is intended for industrial and commercial applications only.
LM4040B30H5TA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Package/Case:
- 5-TSSOP, SC-70-5, SOT-353
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Reference Type:
- Shunt
- Output Type:
- Fixed
- Voltage - Output (Min/Fixed):
- 3V
- Voltage - Output (Max):
- -
- Current - Output:
- 15 mA
- Tolerance:
- ±0.2%
- Temperature Coefficient:
- 100ppm/°C
- Noise - 0.1Hz to 10Hz:
- -
- Noise - 10Hz to 10kHz:
- 35µVrms
- Voltage - Input:
- -
- Current - Supply:
- -
- Current - Cathode:
- 70 µA
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-5
LM4040B30H5TA FAQ
1.How can I place an order for LM4040B30H5TA through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4040B30H5TA 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 LM4040B30H5TA reliable?
The price and inventory of LM4040B30H5TA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM4040B30H5TA is usually 5 days.
3.What payment methods are accepted for LM4040B30H5TA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4040B30H5TA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4040B30H5TA?
LM4040B30H5TA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4040B30H5TA 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 LM4040B30H5TA?
For technical support, including LM4040B30H5TA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4040B30H5TA requirements.
6.How does Aetrix verify that LM4040B30H5TA is sourced from the original manufacturer or authorized distributors?
All LM4040B30H5TA 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 LM4040B30H5TA meets industry standards.
7.What is the process for return or replacement of LM4040B30H5TA?
All LM4040B30H5TA units undergo pre-shipment inspection (PSI). If there is an issue with LM4040B30H5TA, 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 LM4040B30H5TA part is unused and in its original packaging.
Return procedure for LM4040B30H5TA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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