Texas Instruments LM336BZ-5.0/NOPB

Overview

LM336BZ-5.0/NOPB from Texas Instruments is a precision 5.0V shunt voltage reference diode in TO-92 package, featuring ±1% initial tolerance, 0.6Ω dynamic impedance, and operation over 0°C to +70°C. It functions as a low-temperature-coefficient zener replacement in analog front-ends, power supply feedback loops, and calibration circuits requiring stable 5V references.

For engineers reviewing the LM336BZ-5.0/NOPB datasheet, LM336BZ-5.0/NOPB pinout, LM336BZ-5.0/NOPB application, or LM336BZ-5.0/NOPB equivalent, this page delivers verified electrical specs, thermal behavior, trimming methodology, and real-world use cases - all specific to the LM336BZ-5.0/NOPB variant with TO-92 packaging and commercial temperature grade.

Technical Context

The LM336BZ-5.0/NOPB operates as a two-terminal shunt regulator with third-terminal trim capability (though unused in Z-variant), delivering 5.00V nominal output at 1 mA reverse current. Its monolithic construction provides stable regulation across 600 μA–10 mA operating current range and exhibits 4–12 mV temperature stability over 0°C to +70°C.

Unlike standard zeners, it integrates low dynamic impedance (0.6Ω typ) and fast turn-on response, enabling precise voltage clamping and buffered reference generation without external op-amps in many applications. The TO-92 package supports through-hole mounting with θ_JA = 180°C/W (0.4″ leads).

Key Specifications

Pinout & Package

LM336BZ-5.0/NOPB uses a 3-pin TO-92 plastic package (JEDEC TO-226, variation AA), with straight or formed leads. Pin 1 is the cathode, Pin 2 is the anode, and Pin 3 is the adjust terminal - though the Z-variant's adjust pin is internally unconnected and not functional for trimming.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar shunt voltage reference applications.

Compared with TL431ACDBVR and LM4040C50IDBZR, the LM336BZ-5.0/NOPB offers TO-92 mechanical reliability and simplified 2-terminal operation at the cost of wider initial tolerance - making it optimal for cost-sensitive, manually assembled, or thermally stable environments where ±1% is sufficient.

Availability

LM336BZ-5.0/NOPB is available at Aetrix Electronics and suitable for digital multimeters, isolated power supplies, portable sensor modules, and op-amp clamping circuits requiring stable component supply with commercial-grade temperature performance.

Supply support for LM336BZ-5.0/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, embedded processing, and connectivity technologies, with over 90 years of innovation in precision analog ICs.

The LM336 series was designed as a drop-in upgrade to discrete zener diodes, targeting cost-effective, stable voltage references for test equipment, power management, and industrial signal conditioning applications.

FAQ

What is the maximum junction temperature for LM336BZ-5.0/NOPB?

The LM336BZ-5.0/NOPB has a maximum junction temperature of 100°C, consistent with its LM336 commercial-grade designation. This limit is enforced by its 0°C to +70°C ambient operating range and 180°C/W thermal resistance (θ_JA) in TO-92 package with 0.4″ leads. Power dissipation must remain below 167 mW to avoid exceeding T_J = 100°C at 70°C ambient. The LM336BZ-5.0/NOPB datasheet specifies absolute maximum ratings and thermal characteristics to guide safe thermal design.

Can LM336BZ-5.0/NOPB be used as a negative voltage reference?

Yes, the LM336BZ-5.0/NOPB can function as a negative voltage reference by reversing its polarity: connect the anode to system ground and the cathode to a negative rail, then sink current into the cathode. Its shunt architecture supports bidirectional operation, enabling symmetric ±5V reference generation in dual-supply op-amp circuits. The LM336BZ-5.0/NOPB maintains 5.00V regulation regardless of polarity, provided reverse current stays within 600 μA–10 mA and power limits are observed.

Is the adjust pin (Pin 3) functional on LM336BZ-5.0/NOPB?

No, the adjust pin (Pin 3) is not functional on the LM336BZ-5.0/NOPB. Unlike the LM136-5.0 or LM236-5.0 variants, the Z-suffix indicates a non-adjustable version with Pin 3 internally unconnected. TI's package addendum and datasheet confirm that LM336BZ-5.0/NOPB uses the same TO-92 outline but omits the trim capability. For adjustable references, engineers should select LM336BM-5.0/NOPB (SOIC-8, functional adjust) or LM236H-5.0/NOPB (TO-92 with active trim).

What is the long-term stability of LM336BZ-5.0/NOPB?

The LM336BZ-5.0/NOPB exhibits 20 ppm long-term stability after 1000 hours at 25°C ±0.1°C and 1 mA reverse current, as measured per JEDEC JESD22-A108. This corresponds to ~100 μV drift over 1000 hours - critical for metrology-grade instruments where recalibration intervals exceed one year. The LM336BZ-5.0/NOPB specification aligns with its B-grade precision classification and supports applications demanding minimal aging-induced error.

How does LM336BZ-5.0/NOPB compare to standard 5.1V zener diodes?

The LM336BZ-5.0/NOPB outperforms standard 5.1V zeners in temperature coefficient (typically 0.0001%/°C vs. 0.05%/°C), dynamic impedance (0.6Ω vs. 10–50Ω), and initial tolerance (±1% vs. ±5%). Its monolithic IC construction eliminates process variation issues inherent in discrete zeners. While both operate as shunt devices, the LM336BZ-5.0/NOPB delivers predictable 5.00V regulation across 600 μA–10 mA - unlike zeners whose voltage shifts significantly with current. The LM336BZ-5.0/NOPB is engineered specifically to replace zeners in high-stability applications.