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

Microchip Technology 1N4754CPE3/TR12

Name: 1N4754CPE3/TR12
Brand: Microchip Technology
SKU: 1N4754CPE3/TR12
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 1N4754CPE3/TR12

Manufacturer:: Microchip Technology

Category:: Single Zener Diodes

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

Datasheet:: 1N4754CPE3/TR12.pdf

Description:: DIODE ZENER 39V 1W DO204AL

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Product details

Overview

1N4754CPE3/TR12 from Microsemi is a 39 V, ±2% tolerance, 1 W axial-lead silicon Zener diode in DO-41 package, rated for 6.5 mA test current, 23 Ω dynamic impedance at I_ZT, and 1000 mA maximum regulator current at T_L = 50°C. It delivers stable voltage regulation in power supply reference, overvoltage protection, and precision biasing circuits across industrial temperature range.

For engineers reviewing the 1N4754CPE3/TR12 datasheet, 1N4754CPE3/TR12 pinout, 1N4754CPE3/TR12 application, or 1N4754CPE3/TR12 equivalent, key selection criteria include its tight 2% V_Z tolerance, low Z_ZT at nominal I_ZT, RoHS-compliant matte-tin plating, and TR12 tape-and-reel packaging for automated assembly.

Technical Context

This Zener operates in reverse breakdown to maintain a stable 39 V reference across a wide current range (I_ZK = 0.25 mA to I_ZM = 1000 mA), with specified knee impedance of 23 Ω at 0.25 mA and dynamic impedance of 23 Ω at 6.5 mA. Its thermal resistance is 45 °C/W junction-to-lead (3/8" lead length) and 105 °C/W junction-to-ambient on FR4 board.

The device features cathode band polarity marking, UL94V-0 void-free epoxy case, and is moisture-sensitive Level 1 per J-STD-020B-no dry pack required. It is rated for -65°C to +150°C operating/storage temperature and withstands 260°C soldering for 10 s.

Key Specifications

Parameter	Value and Actual Design Meaning
Zener Voltage (V_Z)	39 V ±2% at I_ZT = 6.5 mA - ensures precise reference accuracy for feedback loops and sensing
Power Dissipation	1.0 W at T_L ≤ 105°C - supports continuous regulation without forced cooling in compact layouts
Dynamic Impedance (Z_ZT)	23 Ω at I_ZT = 6.5 mA - minimizes output voltage variation under load transients
Max Regulator Current (I_ZM)	1000 mA at T_L = 50°C - enables robust shunt regulation in medium-power supplies
Reverse Leakage (I_R)	5 μA max at V_R = 29.7 V - guarantees low standby current in high-impedance bias networks
Thermal Resistance (R_θJL)	45 °C/W junction-to-lead - allows accurate thermal design using standard lead-mount derating curves
Operating Temperature	-65°C to +150°C - suitable for under-hood automotive, industrial control, and aerospace environments

Pinout & Package

DO-41 (DO-204AL) plastic axial-lead package with cathode indicated by colored 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; reverse-biased operation requires this terminal to be negative relative to cathode
Cathode	Banded end	Connected to regulated voltage node; must be held positive relative to anode for Zener conduction and regulation

Key Features

Feature	Design Value
±2% Zener Voltage Tolerance	Enables tighter closed-loop regulation without post-calibration in voltage references and error amplifiers
RoHS-Compliant "e3" Suffix	Meets global environmental compliance requirements with annealed matte-tin plating and lead-free assembly compatibility
Tape-and-Reel Packaging (TR12)	Supports high-volume automated placement with EIA-296 standard carrier tape, 12 mm width, 1000 pcs/reel
Level 1 Moisture Sensitivity	Eliminates baking preconditioning prior to reflow, reducing manufacturing cycle time and cost
Nonsensitive to ESD	Withstands MIL-STD-750 Method 1020 testing - simplifies handling and eliminates ESD protection circuitry in target designs

Applications

Power Supply Reference	Overvoltage Clamp
Use Scenario: Stabilizing feedback voltage in linear regulators or switching converter error amplifiers. IC Role / Device Role / Timing Role: Zener diode provides fixed reference voltage to comparator or op-amp input. Use Value: 39 V ±2% tolerance and 23 Ω Z_ZT ensure <1% output drift under varying load and line conditions.	Use Scenario: Protecting downstream ICs from transient overvoltage events on DC rails. IC Role / Device Role / Timing Role: Shunt clamping element that conducts above 39 V to divert surge current. Use Value: 1000 mA I_ZM and 1 W rating allow absorption of short-duration surges without failure.
Precision Bias Network	Temperature-Stable Sensor Excitation
Use Scenario: Generating stable bias points for op-amps, transistors, or analog front-ends. IC Role / Device Role / Timing Role: Provides low-drift DC bias voltage independent of supply variations. Use Value: Low Z_ZT and tight tolerance reduce sensitivity to current-source inaccuracies and PCB trace resistance.	Use Scenario: Supplying excitation voltage to RTDs or bridge sensors in industrial measurement systems. IC Role / Device Role / Timing Role: Acts as temperature-compensated voltage source for sensor bridges. Use Value: Specified tempco curve (Figure 3) and -65°C to +150°C rating support stable operation across harsh ambient ranges.

Power Supply Reference

Overvoltage Clamp

Use Scenario: Stabilizing feedback voltage in linear regulators or switching converter error amplifiers.

IC Role / Device Role / Timing Role: Zener diode provides fixed reference voltage to comparator or op-amp input.

Use Value: 39 V ±2% tolerance and 23 Ω Z_ZT ensure <1% output drift under varying load and line conditions.

Use Scenario: Protecting downstream ICs from transient overvoltage events on DC rails.

IC Role / Device Role / Timing Role: Shunt clamping element that conducts above 39 V to divert surge current.

Use Value: 1000 mA I_ZM and 1 W rating allow absorption of short-duration surges without failure.

Precision Bias Network

Temperature-Stable Sensor Excitation

Use Scenario: Generating stable bias points for op-amps, transistors, or analog front-ends.

IC Role / Device Role / Timing Role: Provides low-drift DC bias voltage independent of supply variations.

Use Value: Low Z_ZT and tight tolerance reduce sensitivity to current-source inaccuracies and PCB trace resistance.

Use Scenario: Supplying excitation voltage to RTDs or bridge sensors in industrial measurement systems.

IC Role / Device Role / Timing Role: Acts as temperature-compensated voltage source for sensor bridges.

Use Value: Specified tempco curve (Figure 3) and -65°C to +150°C rating support stable operation across harsh ambient ranges.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
1N4754A	No "C" suffix → ±5% V_Z tolerance; no "e3" RoHS marking; same DO-41 package and 39 V nominal rating	Acceptable where tighter tolerance not required; may require additional calibration or margining in precision references	Select 1N4754A only if cost sensitivity outweighs accuracy needs and RoHS compliance is not mandated
BZX85C39	DO-41 package, 39 V ±5%, 1.3 W power rating, higher I_ZT = 10 mA, Z_ZT = 30 Ω - different thermal and impedance profile	Suitable for general-purpose clamping but less optimal for low-current precision references due to higher knee current	Choose BZX85C39 when higher surge capability is prioritized over tight tolerance and low-Z_ZT performance

Compared with 1N4754A and BZX85C39, the 1N4754CPE3/TR12 offers superior voltage accuracy (±2%), guaranteed RoHS compliance, and optimized low-current regulation behavior - making it preferred for calibrated instrumentation, feedback references, and automotive-grade power management where long-term stability matters.

Availability

1N4754CPE3/TR12 is available at Aetrix Electronics and suitable for power supply reference, overvoltage protection, and precision bias network applications requiring stable component supply, consistent parametric performance, and full RoHS compliance.

Supply support for 1N4754CPE3/TR12 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 timing components for aerospace, defense, and industrial markets.

The 1N47xxAP series was designed specifically for ruggedized, high-stability voltage regulation in mission-critical power systems where long-term parameter consistency and environmental resilience are mandatory.

FAQ

What is the Zener voltage tolerance of the 1N4754CPE3/TR12?

The 1N4754CPE3/TR12 has a Zener voltage tolerance of ±2%, as indicated by the "C" suffix in the part number. This means its measured V_Z falls within 38.22 V to 39.78 V at I_ZT = 6.5 mA and T_L = 25°C. This tighter tolerance supports higher-accuracy regulation than standard ±5% parts like the 1N4754A, making the 1N4754CPE3/TR12 ideal for precision reference designs where calibration overhead must be minimized.

Is the 1N4754CPE3/TR12 RoHS compliant?

Yes, the 1N4754CPE3/TR12 is RoHS compliant, confirmed by the "e3" suffix in its full designation. It uses annealed matte-tin plating on leads and meets all substance restrictions under Directive 2011/65/EU. The device is also moisture-sensitive Level 1 per J-STD-020B, requiring no dry pack prior to assembly - a feature verified in Microsemi's official documentation for the 1N4728AP–1N4764AP,e3 series.

What is the maximum regulator current for the 1N4754CPE3/TR12 at 50°C lead temperature?

The maximum regulator current (I_ZM) for the 1N4754CPE3/TR12 is 1000 mA when lead temperature (T_L) is maintained at 50°C. This value is explicitly listed in the Electrical Characteristics table on page 2 of the Microsemi datasheet. Exceeding this current without adequate thermal management risks exceeding the 1 W power limit and potential thermal runaway, so proper heatsinking or current limiting is essential in high-current shunt applications.

Does the 1N4754CPE3/TR12 have a specified dynamic impedance, and at what test condition?

Yes, the 1N4754CPE3/TR12 has a maximum dynamic impedance (Z_ZT) of 23 Ω, measured at the test current I_ZT = 6.5 mA. This parameter reflects small-signal AC impedance near the Zener knee and directly impacts regulation stability under varying load conditions. Lower Z_ZT values like this one improve ripple rejection and transient response - a key advantage of the 1N4754CPE3/TR12 over higher-impedance alternatives in sensitive analog circuits.

What does the "TR12" suffix indicate in the 1N4754CPE3/TR12 part number?

"TR12" indicates tape-and-reel packaging per EIA-296 standard, with 12 mm carrier tape width and 1000 units per reel. This format enables automated pick-and-place assembly in high-volume manufacturing. The "TR" suffix is optional and added to denote reel packaging; the base device remains electrically and mechanically identical to non-reel versions such as 1N4754CPE3. All electrical specs, including V_Z, Z_ZT, and I_ZM, apply identically to the 1N4754CPE3/TR12.

1N4754CPE3/TR12 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):: 39 V

Tolerance:: ±2%

Power - Max:: 1 W

Impedance (Max) (Zzt):: 60 Ohms

Current - Reverse Leakage @ Vr:: 5 µA @ 29.7 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)

1N4754CPE3/TR12 FAQ

1.How can I place an order for 1N4754CPE3/TR12 through Aetrix?

Please submit a Request for Quotation (RFQ) for 1N4754CPE3/TR12 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 1N4754CPE3/TR12 reliable?

The price and inventory of 1N4754CPE3/TR12 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N4754CPE3/TR12 is usually 5 days.

3.What payment methods are accepted for 1N4754CPE3/TR12?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N4754CPE3/TR12 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 1N4754CPE3/TR12?

1N4754CPE3/TR12 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 1N4754CPE3/TR12 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 1N4754CPE3/TR12?

For technical support, including 1N4754CPE3/TR12 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N4754CPE3/TR12 requirements.

6.How does Aetrix verify that 1N4754CPE3/TR12 is sourced from the original manufacturer or authorized distributors?

All 1N4754CPE3/TR12 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 1N4754CPE3/TR12 meets industry standards.

7.What is the process for return or replacement of 1N4754CPE3/TR12?

All 1N4754CPE3/TR12 units undergo pre-shipment inspection (PSI). If there is an issue with 1N4754CPE3/TR12, 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 1N4754CPE3/TR12 part is unused and in its original packaging.

Return procedure for 1N4754CPE3/TR12:

1.Submit a request within 90 days.

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

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