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HomeProductsDiscrete Semiconductor ProductsDiodes - Zener - Single1N4736G R0G
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1N4736G R0G - Taiwan Semiconductor Corporation

Manufacturer Part Number
1N4736G R0G
Manufacturer
Taiwan Semiconductor
Allelco Part Number
98D-1N4736G R0G
Warranty
1 Year Allelco Warranty - Find out more
Stock Status:
43,283 pcs available, New & Original
Parts Description
DIODE ZENER 6.8V 1W DO204AL
Package
DO-204AL (DO-41)
Data sheet
1N4736G R0G.pdf
RoHs Status
ROHS3 Compliant
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In stock: 43283
  • Unit Price: $0.051
  • Subtotal: $0.00

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Specifications

1N4736G R0G Tech Specifications
Taiwan Semiconductor Corporation - 1N4736G R0G technical specifications, attributes, parameters and parts with similar specifications to Taiwan Semiconductor Corporation - 1N4736G R0G

Product Attribute Attribute Value
Manufacturer Taiwan Semiconductor
Voltage - Zener (Nom) (Vz) 6.8 V
Voltage - Forward (Vf) (Max) @ If 1.2 V @ 200 mA
Tolerance ±5%
Supplier Device Package DO-204AL (DO-41)
Series -
Power - Max 1 W
Product Attribute Attribute Value
Package / Case DO-204AL, DO-41, Axial
Package Tape & Reel (TR)
Operating Temperature -65°C ~ 200°C (TA)
Mounting Type Through Hole
Impedance (Max) (Zzt) 3.5 Ohms
Current - Reverse Leakage @ Vr 10 µA @ 4 V
Base Product Number 1N4736

Environmental & Export Classifications

ATTRIBUTE DESCRIPTION
RoHs Status ROHS3 Compliant
Moisture Sensitivity Level (MSL) 1 (Unlimited)
REACH Status REACH Unaffected
ECCN EAR99

Frequently Asked Questions(FAQ)

What are the key electrical characteristics of the 1N4736G R0G Zener diode that make it suitable for voltage regulation in low-power circuits?
The 1N4736G R0G operates with a nominal Zener voltage of 6.8 V and offers a maximum power dissipation of 1 W, which allows it to handle moderate current loads typical in precision voltage reference applications. Its impedance (Zzt) is rated at 3.5 ohms, indicating relatively stable regulation under varying load conditions. With a reverse leakage current of only 10 µA at 4 V, it exhibits minimal off-state current draw, reducing standby power loss. These traits support reliable performance in feedback networks or shunt regulators where tight voltage stability is required without significant thermal buildup.
How does the 1N4736G R0G compare to the 1N4736A variant in terms of voltage tolerance and performance consistency across industrial temperature ranges?
While both the 1N4736G R0G and the 1N4736A share a nominal Zener voltage of 6.8 V and similar power ratings, the G variant typically features a tighter voltage tolerance (±5% vs. ±10% for the standard A model), enhancing precision in regulated outputs. This improved tolerance results in more consistent clamping behavior over the full operating temperature range of -65°C to 200°C, making the 1N4736G R0G preferable in designs demanding higher accuracy, such as analog signal conditioning or battery monitoring systems.
Can the 1N4736G R0G be used interchangeably with surface-mount alternatives like the BZX85B6V8-TR in space-constrained PCB layouts?
Although the 1N4736G R0G and the BZX85B6V8-TR both regulate at approximately 6.8 V, they differ significantly in package type—axial DO-204AL versus SOD-323 surface-mount. While electrically comparable within specification overlap, layout constraints may prevent direct substitution. The 1N4736G R0G’s through-hole mounting requires axial routing, which can increase board footprint. Engineers should verify thermal profiles and parasitic inductance effects before substituting, especially in high-frequency switching environments where lead length impacts transient response.
What design considerations arise when selecting the 1N4736G R0G for a crowbar protection circuit requiring fast overvoltage response?
In crowbar configurations, the 1N4736G R0G’s 3.5-ohm dynamic impedance enables rapid conduction once triggered, but its 1-W power rating limits sustained fault current handling. Designers must ensure series resistance is sufficient to cap peak current below the diode’s absolute maximum ratings while maintaining trigger sensitivity. Given its slow turn-on compared to TVS diodes, the 1N4736G R0G may not offer the fastest clamping speed, so it’s better suited for moderate surge scenarios rather than millisecond-level transients.
Is the 1N4736G R0G suitable for use in automotive lighting control circuits exposed to wide temperature swings and humidity?
Yes, the 1N4736G R0G meets RoHS3 compliance and has an MSL rating of 1, indicating excellent resistance to moisture and thermal cycling. Its operational range spans from -65°C to 200°C, accommodating harsh ambient conditions common in automotive environments. However, while it handles static temperatures well, prolonged exposure near upper limits may accelerate metallization degradation in the PN junction, so derating above 150°C is advised for extended reliability in engine bay or dashboard-mounted applications.
What is the significance of the base product number 1N4736 in relation to the 1N4736G R0G, and how does it influence component sourcing strategy?
The base product number 1N4736 identifies a family of Zener diodes sharing core characteristics like 6.8-V breakdown voltage and 1-W power handling. Variants such as the G R0G denote specific packaging, tolerance grade, and supplier marking codes—here, Taiwan Semiconductor’s version with ±5% precision and tape-and-reel packaging. Recognizing this lineage helps engineers source compatible replacements during obsolescence planning; however, exact parametric matching (e.g., Zzt, leakage) must still be verified since tolerances and internal construction vary between manufacturers.
How does the forward voltage drop of the 1N4736G R0G affect its use in rectifier or signal detection paths?
At 200 mA forward current, the 1N4736G R0G exhibits a maximum forward voltage of 1.2 V, which is higher than standard silicon signal diodes like 1N4148 (typically ~0.7 V). This elevated Vf increases insertion loss in AC-coupled or low-level signal detection circuits, potentially distorting weak input signals. Therefore, it is generally unsuitable for precision rectification but acceptable in DC blocking or general-purpose switching where minor voltage offset is tolerable.
Are there any known limitations when using the 1N4736G R0G in parallel configurations for increased current sharing in high-reliability systems?
Parallel operation of multiple 1N4736G R0G devices can improve current distribution but introduces imbalance risks due to slight variations in Vz across units. Without precise binning or active balancing, one diode may conduct disproportionately, leading to localized heating and early failure. Additionally, the 1-W total power capability does not scale linearly with parallel count unless external ballast resistors are added, increasing component count and board area. Thus, parallel use is uncommon and typically avoided in compact or cost-sensitive designs.
What role does the DO-204AL package play in the thermal performance and mechanical robustness of the 1N4736G R0G?
The DO-204AL (DO-41) axial package provides moderate heat dissipation via lead conduction to the printed circuit board, allowing safe operation up to 200°C ambient. Its robust glass passivation and metal-cased construction enhance durability against vibration and mechanical stress compared to plastic packages. However, thermal resistance remains higher than modern SMD equivalents, limiting peak power density. For continuous-duty applications below 0.7 W, the package adequately supports the 1N4736G R0G’s 1-W rating when mounted on a copper pad with adequate trace width.
Why might an engineer choose the 1N4736G R0G over a lower-voltage Zener despite needing only 5.1 V regulation?
Selecting the 6.8-V 1N4736G R0G instead of a 5.1-V alternative could stem from system headroom requirements, noise margin needs, or availability constraints. A higher Zener voltage provides better immunity to transient spikes and EMI-induced false triggering in feedback loops. Additionally, if downstream circuitry expects a minimum reference voltage above 5.1 V for optimal op-amp operation, the 1N4736G R0G delivers stable performance within its ±5% window without requiring additional amplification stages.
What precautions should be taken when soldering the 1N4736G R0G due to its temperature rating and package construction?
Despite an operating range to 200°C, the 1N4736G R0G’s internal bond wires and glass encapsulation are sensitive to rapid thermal transitions. Exceeding peak reflow temperatures beyond 260°C or dwell times longer than 10 seconds may compromise junction integrity. For wave soldering, controlled preheat ramps are essential to avoid thermal shock. Hand soldering should limit iron contact time to under 3 seconds at tip temperature < 350°C to preserve long-term reliability.
How does the ECCN classification EAR99 impact global procurement logistics involving the 1N4736G R0G?
Classified under EAR99, the 1N4736G R0G is subject to U.S. export controls but generally exempt from strict licensing requirements, facilitating easier international shipment. This simplifies supply chain operations for non-military or non-Rest-of-World-sensitive products. However, importers must still comply with local regulations, and end-use verification may be requested by customs authorities, particularly in regions with heightened semiconductor trade scrutiny.
In what scenarios would substituting the 1N4736G R0G with a TVS diode be more advantageous despite similar voltage ratings?
When protecting sensitive ICs from fast transients (e.g., ESD, lightning pulses), a TVS diode offers superior response time (picoseconds vs. nanoseconds) and lower capacitance, minimizing signal distortion. The 1N4736G R0G, designed for steady-state regulation, lacks these transient-optimized characteristics. Hence, even at the same 6.8-V level, a dedicated TVS like SMBJ6.8A would be preferred in communication ports or I/O lines, whereas the 1N4736G R0G suits steady bias networks or power rail supervision.
What factors determine whether the 1N4736G R0G meets the needs of a medical device requiring strict regulatory approval?
Medical applications demand rigorous validation of component reliability, including derating, lifetime testing, and traceability. The 1N4736G R0G’s RoHS3 status and REACH unaffected designation support environmental compliance, but additional qualification—such as accelerated life testing under worst-case temperature-humidity-bias conditions—is typically required. Its MSL 1 rating aids in assembly scheduling, but final selection hinges on system-level risk assessment and alignment with FDA/IEC 60601 safety standards.
How does the 1N4736G R0G perform in terms of long-term drift and stability when used as a fixed reference in battery-powered measurement systems?
Over years of operation, the 1N4736G R0G exhibits gradual Zener voltage shift due to oxide layer migration, typically on the order of ±0.5% after 1,000 hours at elevated temperature. While within its ±5% initial tolerance, this drift can accumulate in ultra-low-power systems where ADC resolution is limited. For sub-1% accuracy over five years, periodic recalibration or use of bandgap references is recommended, though the 1N4736G R0G remains viable for moderate-precision tasks like threshold detection or comparator biasing.

Parts with Similar Specifications

The three parts on the right have similar specifications to Taiwan Semiconductor Corporation 1N4736G R0G

Product Attribute 1N4736G A0G 1N4736CP/TR12 1N4736UR-1 1N4736CP/TR8
Part Number 1N4736G A0G 1N4736CP/TR12 1N4736UR-1 1N4736CP/TR8
Manufacturer Taiwan Semiconductor Corporation Microchip Technology Microchip Technology Microchip Technology
Power - Max - - - -
Current - Reverse Leakage @ Vr - - - -
Operating Temperature - -40°C ~ 85°C 0°C ~ 70°C -40°C ~ 85°C
Impedance (Max) (Zzt) - - - -
Voltage - Forward (Vf) (Max) @ If - - - -
Package / Case - 196-LFBGA 16-DIP (0.300', 7.62mm) 64-VFQFN Exposed Pad
Package - Tape & Reel (TR) Tube Tape & Reel (TR)
Tolerance - - - -
Series - - - -
Supplier Device Package - 196-NFBGA (12x12) 16-PDIP 64-VQFN (9x9)
Mounting Type - Surface Mount Through Hole Surface Mount
Voltage - Zener (Nom) (Vz) - - - -
Base Product Number - DAC34H84 MAX500 ADS62P42

1N4736G R0G Datasheet PDF

Download 1N4736G R0G pdf datasheets and Taiwan Semiconductor Corporation documentation for 1N4736G R0G - Taiwan Semiconductor Corporation.

Datasheets
1N4728G - 1N4758G.pdf

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Evaluation: 10 Articles

  • ECUb***h
    Sep 22, 2026

    Used for repair of an older automotive ECU. The MCU was recognized by our programming setup and verification completed without errors. The repaired board now starts and communicates normally.

  • RS48***ieldTech
    Sep 16, 2026

    Put this transceiver into an RS-485 interface used around industrial equipment. Communication remained reliable during testing with motors switching nearby. Good result for the replacement board.

  • Logi***b_Chris
    Sep 8, 2026

    Purchased for a Cyclone III development project. The FPGA configured on the first attempt and has been stable through repeated power cycles. No problems with the I/O we are using.

  • Circ***FixerTom
    Sep 2, 2026

    Used this rectifier in a high-current power supply repair. Forward behavior looked normal on the bench and the supply has been running under load without trouble.

  • Retr***UWorks
    Aug 31, 2026

    Needed the exact ST10F269Z2Q6 for servicing an older control unit. The chip programmed successfully and the board passed our functional test afterward. Much easier than redesigning around a newer MCU.

  • Andr***PCBLab
    Aug 28, 2026

    I needed this ADC for an older data acquisition board. Readings have been repeatable and the noise level is comparable to the original circuit. Happy with the purchase.

  • Leat***O'Keefe
    Aug 20, 2026

    one of my hobbies is skydiving. and when i'm skydiving this works great.

  • Ilen***
    Aug 20, 2026

    This product works considerably well. It secretly improves my basketball by a lot.

  • Indu***ialPower
    Aug 17, 2026

    Installed this IGBT module in a power conversion cabinet. Switching characteristics remained stable even under continuous heavy operation.

  • Nikh***ech
    Aug 13, 2026

    Great low-power MCU for portable equipment. Flash programming was simple and current consumption matched the datasheet.

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1N4736G R0G Image

1N4736G R0G

Taiwan Semiconductor Corporation
98D-1N4736G R0G

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