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

Microchip Technology 1N4735CE3/TR13

Name: 1N4735CE3/TR13
Brand: Microchip Technology
SKU: 1N4735CE3/TR13
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 1N4735CE3/TR13

Manufacturer:: Microchip Technology

Category:: Single Zener Diodes

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

Datasheet:: 1N4735CE3/TR13.pdf

Description:: DIODE ZENER 6.2V 1W DO204AL

Quantity:: RFQ Add To RFQ list

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Product details

Overview

1N4735CE3/TR13 from Microsemi is a 6.2 V, ±2% tolerance, 1 W axial-lead silicon Zener diode in DO-41 package, rated for 41 mA test current and 146 Ω dynamic impedance at I_ZT, used for precision voltage regulation in power supply feedback loops and reference circuits.

For engineers reviewing the 1N4735CE3/TR13 datasheet, 1N4735CE3/TR13 pinout, 1N4735CE3/TR13 application, or 1N4735CE3/TR13 equivalent, key selection factors include its tight 2% V_Z tolerance, 1 W steady-state dissipation at T_L < 105°C, RoHS-compliant matte-tin plating, and JEDEC-registered DO-41 mechanical form factor.

Technical Context

This Zener operates in reverse breakdown to maintain stable output voltage across varying load and line conditions. Its 6.2 V nominal zener voltage exhibits a positive temperature coefficient near zero crossing, with typical tempco of +2 mV/°C per Figure 3 in the datasheet.

It delivers regulation over a broad operating current range (I_ZK = 1.0 mA to I_ZM = 730 mA at T_A = 50°C), with low knee impedance (400 Ω at I_ZK) ensuring stable turn-on behavior under light-load conditions.

Key Specifications

Parameter	Value and Actual Design Meaning
Zener Voltage (V_Z)	6.2 V ±2% at I_ZT = 41 mA - ensures precise reference accuracy for feedback networks
Power Dissipation	1.0 W at T_L < 105°C (3/8″ lead length) - defines maximum continuous thermal load without derating
Dynamic Impedance	2 Ω max at I_ZT = 41 mA - determines output voltage stability under dynamic load changes
Reverse Leakage Current	10 μA max at V_R = 4.96 V - confirms low standby power loss in high-impedance bias networks
Forward Voltage	1.2 V max at I_F = 200 mA - supports use as clamp or protection diode in forward conduction
Thermal Resistance	45 °C/W junction-to-lead - enables accurate thermal design when mounted with 10 mm lead length

Pinout & Package

DO-41 (JEDEC DO-204AL) plastic axial-lead package with cathode indicated by color band; leads are tin-lead or RoHS-compliant matte-tin plated, solderable per MIL-STD-750 Method 2026.

Pin/Terminal	Circuit Role	Design Meaning
Anode	Non-banded end	Connected to lower-potential node in reverse-biased regulation configuration
Cathode	Banded end	Connected to regulated output node; must be held more positive than anode for Zener operation

Key Features

Feature	Design Value
±2% Zener voltage tolerance (C suffix)	Enables tighter output regulation vs. standard ±5% (A suffix) parts in feedback divider networks
RoHS-compliant "e3" suffix	Meets EU Directive 2011/65/EU with annealed matte-tin plating, no lead or hazardous substances
Moisture sensitivity Level 1	Eliminates dry-pack requirement and floor-life constraints for SMT assembly planning
Nonsensitive to ESD (MIL-STD-750 Method 1020)	Reduces handling precautions during board assembly and rework without added protection circuitry

Applications

Switching Power Supply Feedback	Overvoltage Protection Clamp
Use Scenario: Regulating output voltage in isolated flyback or forward converter secondary-side feedback loop. IC Role / Device Role / Timing Role: Provides stable 6.2 V reference for optocoupler-driven TL431-like feedback path. Use Value: Tight ±2% tolerance minimizes output voltage drift across production units and temperature.	Use Scenario: Clamping transient spikes on 5 V logic rails or analog sensor inputs. IC Role / Device Role / Timing Role: Acts as shunt protector by conducting above 6.2 V to divert surge energy to ground. Use Value: 1 W power rating sustains short-duration transients without thermal runaway or parametric shift.
Low-Power Voltage Reference	Industrial Sensor Excitation
Use Scenario: Generating stable bias voltage for op-amp input stages or ADC reference dividers. IC Role / Device Role / Timing Role: Functions as two-terminal passive reference source with minimal external components. Use Value: Low 400 Ω knee impedance ensures stable regulation even at I_Z = 1 mA, enabling micro-power designs.	Use Scenario: Providing excitation voltage to resistive bridge sensors (e.g., strain gauges) in harsh environments. IC Role / Device Role / Timing Role: Supplies stable 6.2 V excitation while rejecting supply ripple via inherent Zener impedance. Use Value: Operating range from –65°C to +150°C supports deployment in automotive engine compartments and industrial enclosures.

Switching Power Supply Feedback

Overvoltage Protection Clamp

Use Scenario: Regulating output voltage in isolated flyback or forward converter secondary-side feedback loop.

IC Role / Device Role / Timing Role: Provides stable 6.2 V reference for optocoupler-driven TL431-like feedback path.

Use Value: Tight ±2% tolerance minimizes output voltage drift across production units and temperature.

Use Scenario: Clamping transient spikes on 5 V logic rails or analog sensor inputs.

IC Role / Device Role / Timing Role: Acts as shunt protector by conducting above 6.2 V to divert surge energy to ground.

Use Value: 1 W power rating sustains short-duration transients without thermal runaway or parametric shift.

Low-Power Voltage Reference

Industrial Sensor Excitation

Use Scenario: Generating stable bias voltage for op-amp input stages or ADC reference dividers.

IC Role / Device Role / Timing Role: Functions as two-terminal passive reference source with minimal external components.

Use Value: Low 400 Ω knee impedance ensures stable regulation even at I_Z = 1 mA, enabling micro-power designs.

Use Scenario: Providing excitation voltage to resistive bridge sensors (e.g., strain gauges) in harsh environments.

IC Role / Device Role / Timing Role: Supplies stable 6.2 V excitation while rejecting supply ripple via inherent Zener impedance.

Use Value: Operating range from –65°C to +150°C supports deployment in automotive engine compartments and industrial enclosures.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
1N4735A	Same 6.2 V nominal, but ±5% tolerance (A suffix) and non-RoHS Sn/Pb plating	Acceptable where cost sensitivity outweighs precision or environmental compliance requirements	Select only if legacy Sn/Pb assembly process is used and ±5% V_Z meets system spec
BZX55C6V2	Same 6.2 V ±2%, DO-35 package, 500 mW rating, higher Z_ZT (10 Ω)	Lower power handling limits use in >500 mW sustained regulation or surge scenarios	Prefer for space-constrained layouts where 1 W dissipation is not required

Compared with 1N4735A and BZX55C6V2, the 1N4735CE3/TR13 offers superior thermal robustness (1 W vs. 0.5 W), RoHS compliance, and tighter regulation-making it optimal for industrial-grade power supplies requiring long-term stability and regulatory alignment.

Availability

1N4735CE3/TR13 is available at Aetrix Electronics and suitable for switching power supplies, overvoltage protection circuits, low-power voltage references, and industrial sensor excitation requiring stable component supply and full traceability.

Supply support for 1N4735CE3/TR13 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

Microsemi (now part of Microchip Technology) is a U.S.-based semiconductor company specializing in high-reliability analog, RF, and discrete components for aerospace, defense, and industrial markets.

The 1N47xx series was designed specifically for precision voltage regulation in ruggedized power systems where long-term stability, wide temperature operation, and MIL-qualified screening options are critical.

FAQ

What is the Zener voltage tolerance of the 1N4735CE3/TR13?

The 1N4735CE3/TR13 has a nominal Zener voltage of 6.2 V with a tight ±2% tolerance, confirmed by the "C" suffix in the part number per Microsemi's datasheet revision C. This tolerance applies at I_ZT = 41 mA and T_L = 25°C. The 1N4735CE3/TR13 is therefore suited for applications demanding higher regulation accuracy than standard ±5% Zeners like the 1N4735A.

What package type does the 1N4735CE3/TR13 use?

The 1N4735CE3/TR13 uses the JEDEC-standard DO-41 (also designated DO-204AL) axial-lead plastic package. Its dimensions, lead spacing, and moisture sensitivity level (Level 1) are fully documented in the Microsemi datasheet. The 1N4735CE3/TR13 features a cathode band for polarity identification and RoHS-compliant matte-tin plating per the "e3" suffix.

What is the maximum power dissipation rating for the 1N4735CE3/TR13?

The 1N4735CE3/TR13 is rated for 1.0 W steady-state power dissipation at lead temperature (T_L) below 105°C with 3/8″ (10 mm) lead length from the body, or at ambient temperature (T_A) below 45°C when mounted on FR4 with specified copper pad geometry. Derating curves in the datasheet define safe operation above these temperatures. This 1 W rating is a key differentiator of the 1N4735CE3/TR13 versus lower-power Zeners.

Does the 1N4735CE3/TR13 meet RoHS requirements?

Yes, the 1N4735CE3/TR13 complies with EU Directive 2011/65/EU (RoHS) as indicated by the "e3" suffix. It uses annealed matte-tin plating instead of traditional tin-lead, and its void-free thermosetting epoxy body meets UL94V-0 flammability standards. The 1N4735CE3/TR13 is certified for lead-free assembly processes including reflow up to 260°C for 10 seconds.

What is the Zener test current (I_ZT) for the 1N4735CE3/TR13?

The Zener test current for the 1N4735CE3/TR13 is 41 mA, as specified in the Electrical Characteristics table of the Microsemi datasheet. This current is used to measure the nominal 6.2 V Zener voltage and dynamic impedance (Z_ZT ≤ 2 Ω). Operation outside this current range is permissible, but regulation performance-including voltage accuracy and impedance-varies predictably per the published V-I curve and derating data for the 1N4735CE3/TR13.

1N4735CE3/TR13 Specifications

Product attributes: Attribute value

Manufacturer:: Microchip Technology

Series:: -

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

Packaging:: Tape & Reel (TR)

Product Status:: Active

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

Tolerance:: ±2%

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 ~ 150°C

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

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

1N4735CE3/TR13 FAQ

1.How can I place an order for 1N4735CE3/TR13 through Aetrix?

Please submit a Request for Quotation (RFQ) for 1N4735CE3/TR13 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 1N4735CE3/TR13 reliable?

The price and inventory of 1N4735CE3/TR13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N4735CE3/TR13 is usually 5 days.

3.What payment methods are accepted for 1N4735CE3/TR13?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N4735CE3/TR13 transactions.

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4.How is shipping managed for 1N4735CE3/TR13?

1N4735CE3/TR13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 1N4735CE3/TR13 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 1N4735CE3/TR13?

For technical support, including 1N4735CE3/TR13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N4735CE3/TR13 requirements.

6.How does Aetrix verify that 1N4735CE3/TR13 is sourced from the original manufacturer or authorized distributors?

All 1N4735CE3/TR13 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 1N4735CE3/TR13 meets industry standards.

7.What is the process for return or replacement of 1N4735CE3/TR13?

All 1N4735CE3/TR13 units undergo pre-shipment inspection (PSI). If there is an issue with 1N4735CE3/TR13, 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 1N4735CE3/TR13 part is unused and in its original packaging.

Return procedure for 1N4735CE3/TR13:

1.Submit a request within 90 days.

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

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