My Inquiry
My Account
Texas Instruments LM35H/NOPB
- Part No.:
- LM35H/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Analog and Digital Output
- Package:
- TO-206AB, TO-46-3 Metal Can
- Datasheet:
-
LM35H/NOPB.pdf
- Description:
- SENSOR ANALOG -55C-150C TO46-3
- Quantity:
- Payment:
- Shipping:
Inventory:771
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LM35H/NOPB from Texas Instruments is a precision centigrade temperature sensor IC with analog voltage output directly proportional to ambient temperature, featuring ±0.4°C accuracy at 25°C, −55°C to +150°C operating range, and 10 mV/°C linear scale factor. It operates from 4 V to 30 V supply, draws <60 µA quiescent current, and delivers low-impedance output (≤0.5 Ω) for direct interfacing with ADCs or instrumentation amplifiers in thermal monitoring circuits.
For engineers reviewing the LM35H/NOPB datasheet, LM35H/NOPB pinout, LM35H/NOPB application, or LM35H/NOPB equivalent, key selection considerations include its calibrated Celsius output (no Kelvin offset subtraction required), wafer-level trimming eliminating external calibration, self-heating <0.08°C in still air, and compatibility with single-supply systems across industrial, automotive, and power electronics thermal management.
Technical Context
The LM35H/NOPB implements a delta-VBE temperature-sensing element buffered by a Class-A amplifier, producing a ratiometric analog output where VOUT = 10 mV/°C × T(°C). Its architecture ensures inherent linearity without external components and supports operation with either single or dual supplies.
No functional modes or digital configuration exist - the device operates exclusively in continuous analog sensing mode. Output impedance remains stable at ≤0.5 Ω under 1 mA load, enabling direct connection to high-impedance inputs while maintaining accuracy across its full −55°C to +150°C junction temperature range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Scale Factor | 10 mV/°C - enables direct Celsius reading without offset compensation or scaling math |
| Accuracy (25°C) | ±0.4°C tested limit - ensures reliable temperature measurement without system-level calibration |
| Operating Range | −55°C to +150°C - supports extreme-environment applications including engine bay and industrial ovens |
| Supply Voltage | 4 V to 30 V - allows use with common 5 V, 12 V, and 24 V rails without regulation |
| Quiescent Current | 56 µA typical at 25°C - minimizes self-heating (<0.08°C) and extends battery life in portable systems |
| Output Impedance | ≤0.5 Ω - permits driving 1 mA loads directly into ADC reference buffers or op-amp inputs |
| Non-Linearity | ±0.3°C typical - maintains precision across full range without polynomial correction |
Pinout & Package
LM35H/NOPB is supplied in the TO-46 metal can package (NDV), with case connected to GND. This hermetic 3-pin through-hole package measures 4.699 mm × 4.699 mm and provides robust thermal and EMI performance in harsh environments.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| +VS (Pin 1) | Positive Power Supply Input | Accepts 4 V–30 V DC; no reverse-polarity protection - must be externally safeguarded |
| VOUT (Pin 2) | Analog Temperature Output | Source-only output; delivers 0 mV at −55°C, 250 mV at 25°C, 1500 mV at 150°C |
| GND (Pin 3) | Ground Reference / Case Connection | Internally tied to metal can; requires low-impedance PCB ground plane for thermal stability |
Key Features
| Feature | Design Value |
|---|---|
| Calibrated in Celsius | Eliminates need for Kelvin-to-Celsius conversion or fixed-offset subtraction in firmware or signal chain |
| Wafer-Level Trimming | Enables factory-calibrated accuracy without post-assembly trimming, reducing BOM and test cost |
| Low Self-Heating | <0.08°C error in still air - preserves measurement fidelity in thermally isolated or sealed enclosures |
| Single-Supply Operation | Functions from 4 V to 30 V with no negative rail - simplifies power design in 12 V/24 V industrial systems |
| Hermetic TO-46 Package | Provides superior moisture resistance and long-term stability vs. plastic TO-92 in humid or corrosive environments |
Applications
| Power Supply Thermal Monitoring | Battery Pack Temperature Sensing |
|---|---|
|
Use Scenario: Real-time die temperature tracking in switch-mode power supplies to prevent thermal runaway during overload conditions. IC Role / Device Role / Timing Role: Analog front-end temperature transducer feeding feedback loop to PWM controller or protection circuitry. Use Value: ±0.4°C accuracy at 25°C and −55°C to +150°C range enable precise thermal derating and overtemperature shutdown without calibration drift. |
Use Scenario: Cell-level temperature monitoring in multi-cell Li-ion battery packs for charge/discharge control and safety cutoff. IC Role / Device Role / Timing Role: Centigrade-scaled analog sensor interfaced to battery management system (BMS) ADC input. Use Value: 10 mV/°C output allows direct mapping to 12-bit ADC resolution (0.25°C/LSB at 5 V reference), minimizing firmware scaling overhead. |
| HVAC System Ambient Sensing | Industrial Oven Process Control |
|
Use Scenario: Room or duct temperature measurement in commercial HVAC controllers requiring stable long-term accuracy. IC Role / Device Role / Timing Role: Primary temperature reference in closed-loop heating/cooling regulation. Use Value: ±0.08°C long-term stability after 1000 hours at max temperature ensures calibration retention between maintenance cycles. |
Use Scenario: Chamber temperature feedback in industrial baking, curing, or annealing ovens operating up to 150°C. IC Role / Device Role / Timing Role: High-range thermal sensor mounted on oven wall or heat sink near heating elements. Use Value: Hermetic TO-46 package withstands sustained 150°C ambient and resists condensation-induced leakage in cyclic thermal environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar temperature sensor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM35CZ/NOPB | Plastic TO-92 package; rated −40°C to +110°C; ±0.4°C accuracy at 25°C but ±1.5°C at extremes | Lower-cost alternative for non-extreme environments; unsuitable for >110°C or <−40°C operation | Select when cost sensitivity outweighs extended range and hermetic reliability requirements |
| TSIC506-1000 | Digital I²C output; ±0.5°C accuracy; integrated 12-bit ADC; 2.7–5.5 V supply; 10 µA sleep current | Replaces analog signal chain with digital interface; eliminates external ADC and noise-sensitive routing | Choose for microcontroller-based systems needing digital integration, low power, or immunity to analog noise |
Compared with LM35CZ/NOPB, LM35H/NOPB offers wider temperature range and hermetic packaging for harsh environments; compared with TSIC506-1000, it provides simpler analog integration and higher output drive capability but requires external ADC and careful analog layout.
Availability
LM35H/NOPB is available at Aetrix Electronics and suitable for power supply thermal monitoring, battery pack temperature sensing, and industrial oven process control requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for LM35H/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 expertise in precision analog signal conditioning and sensor interface ICs.
The LM35 series was designed specifically for high-accuracy, low-power, direct-Celsius temperature measurement in industrial, automotive, and consumer systems - prioritizing calibration stability, wide operating range, and ease of analog integration.
FAQ
What is the maximum operating temperature of the LM35H/NOPB?
The LM35H/NOPB is rated for continuous operation from −55°C to +150°C junction temperature. Its hermetic TO-46 package maintains parameter stability across this full range, with tested accuracy limits specified up to +150°C per TI's SNIS159H datasheet revision December 2017. Exceeding +150°C risks permanent parametric shift or failure.
Does the LM35H/NOPB require external calibration or trimming?
No - the LM35H/NOPB does not require external calibration or trimming. It achieves ±0.4°C accuracy at 25°C and ±0.8°C at temperature extremes via wafer-level laser trimming, as confirmed in Section 6.7 of the official datasheet. This inherent calibration eliminates post-assembly adjustment and reduces system-level test complexity.
Can the LM35H/NOPB drive an ADC input directly?
Yes - the LM35H/NOPB features ≤0.5 Ω output impedance and can directly drive standard SAR or delta-sigma ADC inputs with input impedances ≥10 kΩ. Its 10 mV/°C output scales cleanly to common 5 V or 3.3 V references (e.g., 250 mV at 25°C yields ~153 LSBs on a 12-bit 5 V ADC), avoiding gain-stage errors.
What is the supply current consumption of the LM35H/NOPB?
The LM35H/NOPB draws 56 µA typical quiescent current at 25°C and 5 V supply, rising to 105 µA at −40°C to +125°C per Section 6.7. This ultra-low current minimizes self-heating (<0.08°C in still air) and extends battery life in portable thermal monitors - critical for applications like wireless sensor nodes.
Is the LM35H/NOPB pin-compatible with other LM35 variants?
Yes - the LM35H/NOPB shares identical 3-pin TO-46 pinout (Pin 1: +VS, Pin 2: VOUT, Pin 3: GND) with all LM35 variants in the same package type. However, it is not pin-compatible with TO-92 (LM35CZ/NOPB) or SOIC (LM35D) variants due to differing physical layouts and terminal assignments.
LM35H/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- TO-206AB, TO-46-3 Metal Can
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Sensor Type:
- Analog, Local
- Sensing Temperature - Local:
- -55°C ~ 150°C
- Sensing Temperature - Remote:
- -
- Output Type:
- Analog Voltage
- Voltage - Supply:
- 4V ~ 30V
- Resolution:
- 10mV/°C
- Features:
- -
- Accuracy - Highest (Lowest):
- ±1°C (±1.5°C)
- Test Condition:
- 25°C (150°C)
- Operating Temperature:
- -55°C ~ 150°C
- Mounting Type:
- Through Hole
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- TO-46-3
LM35H/NOPB FAQ
1.How can I place an order for LM35H/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM35H/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 LM35H/NOPB reliable?
The price and inventory of LM35H/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM35H/NOPB is usually 5 days.
3.What payment methods are accepted for LM35H/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM35H/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM35H/NOPB?
LM35H/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM35H/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 LM35H/NOPB?
For technical support, including LM35H/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM35H/NOPB requirements.
6.How does Aetrix verify that LM35H/NOPB is sourced from the original manufacturer or authorized distributors?
All LM35H/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 LM35H/NOPB meets industry standards.
7.What is the process for return or replacement of LM35H/NOPB?
All LM35H/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM35H/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 LM35H/NOPB part is unused and in its original packaging.
Return procedure for LM35H/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM35H/NOPB Tags
-
MCP9700T-E/TT
Microchip Technology
-
MCP9700T-E/LT
Microchip Technology
-
MCP9701T-E/TT
Microchip Technology
-
MCP9701T-E/LT
Microchip Technology
-
TMP235A4DBZR
Texas Instruments
-
MCP9700AT-E/TT
Microchip Technology
-
MCP9700AT-E/LT
Microchip Technology
-
MCP9701AT-E/LT
Microchip Technology
-
MCP9701AT-E/TT
Microchip Technology
,TO-226_straightlead.jpg)
-
LM335Z
STMicroelectronics
-
TMP1075NDRLR
Texas Instruments
-
TMP1075DGKR
Texas Instruments
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…
