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Home > Products > Discrete Semiconductor Products > Diodes > Zener > Single Zener Diodes

Taiwan Semiconductor Corporation 1N4735G

Name: 1N4735G
Brand: Taiwan Semiconductor Corporation
SKU: 1N4735G
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 1N4735G

Manufacturer:: Taiwan Semiconductor Corporation

Category:: Single Zener Diodes

Package:: DO-204AL, DO-41, Axial

Datasheet:: 1N4735G.pdf

Description:: DIODE ZENER 6.2V 1W DO204AL

Quantity:: RFQ Add To RFQ list

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Inventory:7,286

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Product details

Overview

1N4735G from Taiwan Semiconductor is a 1 W, 6.2 V ±5% Zener diode in DO-41 glass package, designed for precision voltage regulation and reference in low-power DC circuits; features hermetically sealed construction, 41 mA test current, 2 Ω typical Zener impedance at I_ZT, and operates up to +200 °C junction temperature.

For engineers reviewing the 1N4735G datasheet, 1N4735G pinout, 1N4735G application, or 1N4735G equivalent, key selection criteria include Zener voltage tolerance, thermal resistance (R_θJL = 53.5 °C/W), leakage current at 3 V (≤10 µA), and compatibility with J-STD-002 solderable tin-plated leads.

Technical Context

The 1N4735G functions as a single-die, silicon-based Zener diode operating in reverse breakdown mode to maintain stable 6.2 V output across varying load currents. Its 2 Ω dynamic impedance at 41 mA ensures tight regulation under moderate transient loads.

Designed for operation within -65 °C to +200 °C junction temperature range, it relies on DO-41 package thermal performance (R_θJA = 100 °C/W) and hermetic glass sealing to sustain reliability in industrial ambient conditions without derating below 1 W at 25 °C.

Key Specifications

Parameter	Value and Actual Design Meaning
V_Z @ I_ZT	6.2 V nominal ±5% - defines precise clamping/reference voltage at 41 mA test current
P_D	1 W - maximum continuous power dissipation at 25 °C, derates linearly above 25 °C
I_ZT	41 mA - standardized test current ensuring specified V_Z and Z_ZT values
Z_ZT @ I_ZT	2 Ω - low dynamic impedance enables stable regulation under small-signal load variations
I_R @ V_R = 3 V	≤10 µA - minimal reverse leakage preserves accuracy in high-impedance reference nodes
T_J max	+200 °C - high junction temperature rating supports use in thermally constrained enclosures

Pinout & Package

DO-41 axial-leaded glass package with cathode indicated by painted band; leads are pure tin-plated and solderable per J-STD-002. Total weight ≈242 mg.

Pin/Terminal	Circuit Role	Design Meaning
Anode	Forward conduction terminal / reference ground node	Connected to circuit common when used as shunt regulator; establishes reference polarity
Cathode	Reverse breakdown terminal / regulated output node	Connected to input supply via series resistor; delivers stable 6.2 V to load

Key Features

Feature	Design Value
±5% Zener voltage tolerance	Enables predictable 6.2 V regulation without post-production trimming in cost-sensitive designs
Hermetically sealed glass case	Prevents moisture ingress and long-term parameter drift in humid or outdoor environments
R_θJL = 53.5 °C/W	Allows direct PCB trace heat sinking to improve power handling beyond ambient-limited R_θJA
RoHS-compliant construction	Meets global environmental compliance requirements for industrial and consumer end equipment

Applications

Low-Voltage Stabilizer	DC/DC Converter Reference
Use Scenario: Regulating 6.2 V rail for microcontroller reset circuitry or analog sensor biasing in battery-powered IoT nodes. IC Role / Device Role: Shunt voltage reference providing stable threshold for supervisor ICs or ADC reference buffers. Use Value: Tight 6.2 V ±5% tolerance and 2 Ω Z_ZT ensure reset voltage accuracy remains within ±0.31 V over temperature and load.	Use Scenario: Setting feedback voltage in isolated flyback or buck-derived auxiliary supplies for industrial PLCs. IC Role / Device Role: Precision voltage reference for optocoupler-coupled feedback loop in secondary-side regulation. Use Value: Low 10 µA leakage at 3 V minimizes error contribution to feedback divider network, preserving output accuracy.
LED Driver Bias Reference	Adapter Overvoltage Clamp
Use Scenario: Establishing constant-current setpoint in discrete BJT-based LED drivers for signage lighting. IC Role / Device Role: Voltage reference for emitter resistor bias network controlling LED string current. Use Value: Stable 6.2 V reference enables <1% current variation across -40 °C to +85 °C ambient due to low thermal coefficient.	Use Scenario: Clamping transient overvoltage on 5 V USB adapter outputs during load dump or ESD events. IC Role / Device Role: Transient voltage suppressor protecting downstream LDOs and USB PHYs. Use Value: 1 W power rating and 200 °C T_J max allow safe absorption of repetitive 100 ms surges without degradation.

Low-Voltage Stabilizer

DC/DC Converter Reference

Use Scenario: Regulating 6.2 V rail for microcontroller reset circuitry or analog sensor biasing in battery-powered IoT nodes.

IC Role / Device Role: Shunt voltage reference providing stable threshold for supervisor ICs or ADC reference buffers.

Use Value: Tight 6.2 V ±5% tolerance and 2 Ω Z_ZT ensure reset voltage accuracy remains within ±0.31 V over temperature and load.

Use Scenario: Setting feedback voltage in isolated flyback or buck-derived auxiliary supplies for industrial PLCs.

IC Role / Device Role: Precision voltage reference for optocoupler-coupled feedback loop in secondary-side regulation.

Use Value: Low 10 µA leakage at 3 V minimizes error contribution to feedback divider network, preserving output accuracy.

LED Driver Bias Reference

Adapter Overvoltage Clamp

Use Scenario: Establishing constant-current setpoint in discrete BJT-based LED drivers for signage lighting.

IC Role / Device Role: Voltage reference for emitter resistor bias network controlling LED string current.

Use Value: Stable 6.2 V reference enables <1% current variation across -40 °C to +85 °C ambient due to low thermal coefficient.

Use Scenario: Clamping transient overvoltage on 5 V USB adapter outputs during load dump or ESD events.

IC Role / Device Role: Transient voltage suppressor protecting downstream LDOs and USB PHYs.

Use Value: 1 W power rating and 200 °C T_J max allow safe absorption of repetitive 100 ms surges without degradation.

Equivalent & Alternatives

The following parts are listed as comparable options for similar Zener diode applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
1N4735A	Same 6.2 V rating and DO-41 package but ±10% tolerance (vs. ±5% for 1N4735G)	Acceptable where tighter regulation not required; higher leakage (≤50 µA at 3 V)	Select 1N4735G when reference accuracy or low-leakage performance is critical
BZX55C6V2	6.2 V ±5%, same DO-41, but 500 mW rating and higher Z_ZT (10 Ω typical)	Limited to lower-power reference roles; unsuitable for 1 W surge clamping	Choose 1N4735G for full 1 W continuous dissipation and superior impedance performance

Compared with 1N4735A and BZX55C6V2, the 1N4735G delivers tighter voltage control, lower dynamic impedance, and higher power capability-making it optimal for precision shunt regulation and robust overvoltage protection where thermal margin and accuracy are prioritized.

Availability

1N4735G is available at Aetrix Electronics and suitable for low-voltage stabilizers, DC/DC converter references, LED driver bias networks, and adapter overvoltage clamps requiring stable component supply across industrial, automotive, and consumer production programs.

Supply support for 1N4735G 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

Taiwan Semiconductor Corporation (TSC) is a vertically integrated semiconductor manufacturer specializing in discrete power devices, rectifiers, and Zener diodes for industrial and automotive markets.

The 1N47xxG series was developed to deliver high-reliability, RoHS-compliant Zener diodes with hermetic glass packaging and extended temperature capability for mission-critical voltage reference and stabilization tasks.

FAQ

What is the Zener voltage tolerance of the 1N4735G?

The 1N4735G has a nominal Zener voltage of 6.2 V with a standard tolerance of ±5%, meaning the actual measured V_Z falls between 5.89 V and 6.51 V at 41 mA test current and 25 °C. This tolerance is confirmed in the Electrical Specifications table of the Taiwan Semiconductor datasheet (Version G2301).

What is the maximum power dissipation rating for the 1N4735G?

The 1N4735G is rated for 1 W maximum continuous power dissipation at 25 °C ambient temperature. Derating is linear above 25 °C at 8.3 mW/°C, based on its absolute maximum junction temperature of +200 °C and thermal resistance data in the datasheet.

Does the 1N4735G have RoHS compliance documentation?

Yes, the 1N4735G is explicitly stated as RoHS compliant in the Features section of the Taiwan Semiconductor datasheet (Version G2301). It contains no lead, mercury, cadmium, hexavalent chromium, polybrominated biphenyls (PBB), or polybrominated diphenyl ethers (PBDE) above threshold limits.

What is the Zener impedance of the 1N4735G and how is it measured?

The 1N4735G has a typical Zener impedance (Z_ZT) of 2 Ω at I_ZT = 41 mA. This value is derived from the AC voltage ripple observed when a 60 Hz AC current (RMS = 10% of I_ZT) is superimposed on the DC test current, per the datasheet's test methodology note.

Is the 1N4735G suitable for use in high-temperature environments?

Yes, the 1N4735G supports operation from -65 °C to +200 °C junction temperature. Its hermetically sealed DO-41 glass package and specified thermal resistances (R_θJL = 53.5 °C/W, R_θJA = 100 °C/W) make it suitable for under-hood automotive modules or enclosed industrial controls where ambient temperatures exceed 100 °C.

1N4735G Specifications

Product attributes: Attribute value

Manufacturer:: Taiwan Semiconductor Corporation

Series:: -

Package/Case:: DO-204AL, DO-41, Axial

Packaging:: Tape & Reel (TR)

Product Status:: Active

Voltage - Zener (Nom) (Vz):: 6.2 V

Tolerance:: ±5%

Power - Max:: 1 W

Impedance (Max) (Zzt):: 2 Ohms

Current - Reverse Leakage @ Vr:: 10 µA @ 3 V

Voltage - Forward (Vf) (Max) @ If:: 1.2 V @ 200 mA

Operating Temperature:: -65°C ~ 200°C

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: DO-204AL (DO-41)

1N4735G FAQ

1.How can I place an order for 1N4735G through Aetrix?

Please submit a Request for Quotation (RFQ) for 1N4735G 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 1N4735G reliable?

The price and inventory of 1N4735G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N4735G is usually 5 days.

3.What payment methods are accepted for 1N4735G?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N4735G transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 1N4735G?

1N4735G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 1N4735G 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 1N4735G?

For technical support, including 1N4735G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N4735G requirements.

6.How does Aetrix verify that 1N4735G is sourced from the original manufacturer or authorized distributors?

All 1N4735G 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 1N4735G meets industry standards.

7.What is the process for return or replacement of 1N4735G?

All 1N4735G units undergo pre-shipment inspection (PSI). If there is an issue with 1N4735G, 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 1N4735G part is unused and in its original packaging.

Return procedure for 1N4735G:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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