My Inquiry
My Account
Texas Instruments LM136H-2.5/NOPB
- Part No.:
- LM136H-2.5/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- TO-206AB, TO-46-3 Metal Can
- Datasheet:
-
LM136H-2.5/NOPB.pdf
- Description:
- IC VREF SHUNT 2% TO46-3
- Quantity:
- Payment:
- Shipping:
Inventory:248
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LM136H-2.5/NOPB from Texas Instruments is a precision 2.5V shunt voltage reference diode designed for high-stability analog and mixed-signal systems. It delivers ±1% initial tolerance, 0.2Ω dynamic impedance, and operates across −55°C to +125°C. Its three-terminal TO-can (NDV) package enables trimming of reference voltage and temperature coefficient-making it ideal for aerospace-grade power supply calibration and precision ADC/DAC biasing.
For engineers reviewing the LM136H-2.5/NOPB datasheet, LM136H-2.5/NOPB pinout, LM136H-2.5/NOPB application, or LM136H-2.5/NOPB equivalent, key selection criteria include wide operating current (400 μA–10 mA), low temperature coefficient (12 mV over −55°C to +125°C), trimmable reference voltage, RoHS-compliant lead finish, and military-temperature-range suitability without derating.
Technical Context
The LM136H-2.5/NOPB functions as a monolithic, low-temperature-coefficient shunt regulator with zener-like behavior but superior stability and trim capability. Its third terminal allows independent adjustment of output voltage and temperature drift-enabling optimization for minimum TC at 2.490V using external diodes per Figure 15.
Unlike standard zeners, it features built-in dynamic impedance control (0.2Ω typ), fast turn-on response, and specified long-term stability (20 ppm/1000 hrs). It is not a series regulator or IC-based feedback controller-it requires external current-setting resistor and operates in parallel with load.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reference Voltage | 2.490 V (trimmable ±70 mV typical; nominal 2.5V at 1 mA) |
| Initial Tolerance | ±1% (ensures ≤25 mV absolute error at 25°C before trimming) |
| Dynamic Impedance | 0.2 Ω (minimizes output voltage shift under load current variation) |
| Operating Current Range | 400 μA to 10 mA (supports low-power sensing and high-accuracy regulation) |
| Temperature Stability | 12 mV max over −55°C to +125°C (specifies worst-case VREF drift across full range) |
| Long-Term Stability | 20 ppm/1000 hrs (predicts <0.05% output drift over 1 year in stable thermal environment) |
| Package Type | TO metal can (NDV), 3-pin, hermetically sealed (enables high-reliability, moisture-resistant deployment) |
Pinout & Package
LM136H-2.5/NOPB uses a hermetic TO metal can (NDV) package with 3 terminals. The package provides superior thermal stability and moisture resistance versus plastic alternatives-critical for extended-life industrial and aerospace applications.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Pin 1) | Current sink terminal | Connects to system ground or negative rail; sets reference polarity for shunt operation |
| Cathode (Pin 2) | Output/reference node | Provides 2.5V reference potential; must be decoupled with ≥10 nF capacitor for noise immunity |
| Adjust (Pin 3) | Trim control terminal | Enables fine-tuning of VREF and temperature coefficient via external potentiometer or diode network |
Key Features
| Feature | Design Value |
|---|---|
| Low dynamic impedance | 0.2 Ω ensures <0.2 mV output shift per 1 mA load change-critical for high-resolution data acquisition |
| Wide operating current | 400 μA–10 mA supports both ultra-low-power sensor interfaces and high-accuracy op-amp biasing |
| Trim-capable architecture | Third terminal allows simultaneous optimization of reference voltage and temperature coefficient-no trade-off required |
| Military-grade temperature range | −55°C to +125°C operation without derating enables use in avionics, downhole tools, and engine control units |
| Hermetic TO-can packaging | NDV metal can prevents moisture ingress and parameter drift-essential for >10-year field reliability |
Applications
| High-Accuracy Data Acquisition | Aerospace Power Monitoring |
|---|---|
Use Scenario: Precision 16-bit ADC front-end in satellite telemetry subsystem requiring stable reference under thermal cycling. IC Role / Device Role / Timing Role: Shunt voltage reference providing 2.5V基准 for ADC internal conversion and external signal conditioning. Use Value: 12 mV max temp drift and 20 ppm/1000 hrs long-term stability ensure <0.01% measurement error over mission lifetime. | Use Scenario: Onboard voltage monitor in launch vehicle power distribution unit, exposed to −55°C cold soak and +125°C engine bay heat. IC Role / Device Role / Timing Role: Primary shunt reference for isolated DC-DC converter feedback and bus voltage calibration. Use Value: Hermetic TO-can package and −55°C to +125°C rating eliminate condensation-induced drift and guarantee startup reliability. |
| Calibrated Test Equipment | Industrial Process Controllers |
Use Scenario: Benchtop digital multimeter requiring traceable 2.5V reference with <50 ppm/year drift for NIST-maintained calibration. IC Role / Device Role / Timing Role: Trimmed shunt reference used in auto-zeroing circuitry and DMM range scaling. Use Value: Adjustable VREF and TC enable post-calibration drift compensation-reducing annual recalibration frequency by 60%. | Use Scenario: PLC analog I/O module operating in oil refinery control room (60°C ambient, high humidity). IC Role / Device Role / Timing Role: Stable reference for 4–20 mA transmitter DAC and sensor excitation circuits. Use Value: 0.2Ω dynamic impedance maintains reference accuracy despite 10 mA loop current transients and EMI coupling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar shunt voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM336BM-2.5/NOPB | SOIC-8 package; 0°C to +70°C range; ±0.5% initial tolerance; no adjust pin | Commercial-grade instrumentation only; unsuitable for extended temperature or trim-critical designs | Select when cost, PCB space, and commercial temp range outweigh need for trimming and ruggedness |
| REF5025AIDR | Series reference; SOIC-8; ±0.05% initial tolerance; 3 ppm/°C TC; 10 μVpp noise | Ultra-high-precision metrology; requires input voltage >2.75V; no trimming capability | Select when lowest drift and noise are mandatory-and external supply headroom permits series topology |
Compared with LM336BM-2.5/NOPB, LM136H-2.5/NOPB offers wider temperature range and trim flexibility at the cost of larger footprint and higher price; compared with REF5025AIDR, it trades absolute precision for topology flexibility, ruggedness, and direct 5V logic compatibility.
Availability
LM136H-2.5/NOPB is available at Aetrix Electronics and suitable for aerospace power monitoring, high-accuracy data acquisition, calibrated test equipment, and industrial process controllers requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for LM136H-2.5/NOPB 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
Texas Instruments is a global semiconductor leader specializing in analog and embedded processing technologies, with decades of heritage in precision reference design and high-reliability component manufacturing.
The LM136 family was engineered for applications demanding military-grade temperature stability, hermetic packaging, and field-adjustable reference performance-targeting avionics, defense electronics, and critical infrastructure control systems.
FAQ
What is the maximum reverse current rating for LM136H-2.5/NOPB?
The absolute maximum reverse current for LM136H-2.5/NOPB is 15 mA, per TI's SNVS749F datasheet Absolute Maximum Ratings table. Continuous operation above 10 mA is not recommended-designs should maintain 400 μA–10 mA for optimal stability and longevity. Exceeding 15 mA risks irreversible junction damage even momentarily.
Can LM136H-2.5/NOPB be used as a negative voltage reference?
Yes, LM136H-2.5/NOPB can function as a negative voltage reference by reversing its connection: connect the cathode to system ground and the anode to a negative rail. Its shunt architecture supports bidirectional polarity-enabling symmetric ±2.5V references in dual-supply op-amp circuits without additional components.
Does LM136H-2.5/NOPB require an external capacitor for stability?
Yes, TI recommends placing a ≥10 nF ceramic capacitor between cathode and anode (Pin 2 to Pin 1) to suppress high-frequency noise and prevent oscillation. This capacitor improves transient response and reduces output ripple-especially critical in high-impedance feedback paths or noisy environments like motor drives and RF transceivers.
What is the purpose of the Adjust (Pin 3) on LM136H-2.5/NOPB?
The Adjust pin (Pin 3) enables independent trimming of both reference voltage and temperature coefficient. When configured with a potentiometer (Figure 14) or diode network (Figure 15), it allows precise calibration to 2.490V and minimization of TC-achieving lower drift than fixed-reference alternatives without sacrificing initial accuracy.
Is LM136H-2.5/NOPB RoHS compliant?
Yes, LM136H-2.5/NOPB is RoHS compliant, as confirmed in TI's PACKAGE OPTION ADDENDUM (15-Jul-2026): "RoHS: Yes" for orderable part number LM136H-2.5/NOPB in TO (NDV) package. It contains no lead, mercury, cadmium, hexavalent chromium, PBB, or PBDE above threshold limits.
LM136H-2.5/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- TO-206AB, TO-46-3 Metal Can
- Series:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Reference Type:
- Shunt
- Output Type:
- Fixed
- Voltage - Output (Min/Fixed):
- 2.49V
- Voltage - Output (Max):
- -
- Current - Output:
- 10 mA
- Tolerance:
- ±2%
- Temperature Coefficient:
- -
- Noise - 0.1Hz to 10Hz:
- -
- Noise - 10Hz to 10kHz:
- -
- Voltage - Input:
- -
- Current - Supply:
- -
- Current - Cathode:
- 400 µA
- Operating Temperature:
- -55°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-46-3
LM136H-2.5/NOPB FAQ
1.How can I place an order for LM136H-2.5/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM136H-2.5/NOPB 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 LM136H-2.5/NOPB reliable?
The price and inventory of LM136H-2.5/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM136H-2.5/NOPB is usually 5 days.
3.What payment methods are accepted for LM136H-2.5/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM136H-2.5/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM136H-2.5/NOPB?
LM136H-2.5/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM136H-2.5/NOPB 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 LM136H-2.5/NOPB?
For technical support, including LM136H-2.5/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM136H-2.5/NOPB requirements.
6.How does Aetrix verify that LM136H-2.5/NOPB is sourced from the original manufacturer or authorized distributors?
All LM136H-2.5/NOPB 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 LM136H-2.5/NOPB meets industry standards.
7.What is the process for return or replacement of LM136H-2.5/NOPB?
All LM136H-2.5/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM136H-2.5/NOPB, 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 LM136H-2.5/NOPB part is unused and in its original packaging.
Return procedure for LM136H-2.5/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM136H-2.5/NOPB 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
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
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…
