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

Microchip Technology 1N3156E3

Name: 1N3156E3
Brand: Microchip Technology
SKU: 1N3156E3
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 1N3156E3

Manufacturer:: Microchip Technology

Category:: Single Zener Diodes

Package:: DO-204AA, DO-7, Axial

Datasheet:: 1N3156E3.pdf

Description:: DIODE ZENER 8.4V 500MW DO7

Quantity:: RFQ Add To RFQ list

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Inventory:5,048

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Product details

Overview

1N3156E3 from Microsemi is a temperature-compensated 8.4 V Zener reference diode in DO-7 (DO-204AA) glass axial-leaded package, rated for ±5% voltage tolerance, 0.002 %/°C temperature coefficient, and 10 mA test current. It delivers stable voltage reference performance in precision instrumentation, military-grade power supplies, and high-reliability analog circuits operating from –55°C to +100°C.

For engineers reviewing the 1N3156E3 datasheet, 1N3156E3 pinout, 1N3156E3 application, or 1N3156E3 equivalent, key selection criteria include its ultra-low TC (0.002 %/°C), hermetic glass packaging, RoHS-compliant matte-tin plating, and JEDEC-registered qualification under MIL-PRF-19500/158 up to JANTXV level when ordered with appropriate prefixes and suffixes.

Technical Context

This device belongs to Microsemi's zero-temperature-coefficient Zener family, engineered using internal metallurgical bonds to minimize voltage drift across temperature. Its 8.4 V nominal zener voltage is stabilized at 10 mA test current, with impedance limited to 15 Ω and reverse leakage capped at 10 μA at 5.5 V.

The 1N3156E3 achieves 26 mV maximum voltage variation over –55°C to +100°C, enabled by precise doping and thermal compensation design. It is nonsensitive to ESD per MIL-STD-750 Method 1020 and supports flexible axial-lead mounting with cathode band polarity marking.

Key Specifications

Parameter	Value and Actual Design Meaning
Zener Voltage V_Z	8.00–8.80 V @ 10 mA - ensures stable 8.4 V nominal reference within ±5% tolerance for precision biasing
Temp Coefficient αV_Z	0.002 %/°C - enables minimal voltage drift in wide-temperature industrial/military environments
Zener Impedance Z_ZT	15 Ω @ 10 mA - maintains tight regulation under load current variations
Max ΔV_ZT	26 mV over –55°C to +100°C - guarantees bounded reference error without external compensation
Reverse Leakage I_R	≤10 μA @ 5.5 V - prevents parasitic current paths in high-impedance reference nodes
Power Dissipation	500 mW @ T_L = 25°C - supports continuous operation with adequate heatsinking in compact layouts
Operating Temp Range	–55°C to +100°C - qualified for aerospace, downhole, and extended-temperature embedded systems

Pinout & Package

Package: DO-7 (DO-204AA), hermetically sealed glass axial-leaded case with cathode band marking and tin-lead or RoHS-compliant matte-tin plating. Weight: 0.2 g.

Pin/Terminal	Circuit Role	Design Meaning
Anode	Reference ground node	Connected to circuit common; reverse-biased operation requires cathode at higher potential
Cathode	Reference output node	Banded end; supplies stable 8.4 V reference when biased at 10 mA; polarity-critical for correct regulation

Key Features

Feature	Design Value
Temperature Compensation	0.002 %/°C TC achieved via metallurgically bonded junction design - eliminates need for external TC correction networks
Hermetic Glass Packaging	DO-7 (DO-204AA) construction - provides long-term stability and moisture resistance in harsh environments
MIL-PRF-19500/158 Qualification	JANTXV-level qualification available with prefix/suffix (e.g., JANTXV1N3156-1) - meets screening and reliability requirements for defense systems
ESD Robustness	Nonsensitive per MIL-STD-750 Method 1020 - withstands handling without protection circuitry in assembly lines
RoHS Compliance	e3 suffix denotes lead-free matte-tin plating - satisfies environmental compliance without sacrificing solderability or reliability

Applications

High-Precision Data Acquisition Systems	Military Power Supply References
Use Scenario: ADC/DAC reference voltage source in 16-bit+ measurement equipment requiring sub-0.01% drift over temperature. IC Role / Device Role / Timing Role: Primary voltage reference for analog front-end signal conditioning and conversion stages. Use Value: 26 mV max ΔV_ZT over –55°C to +100°C ensures <0.3 LSB error in 16-bit systems without calibration.	Use Scenario: Reference element in regulated DC-DC converters for avionics and vehicle control units. IC Role / Device Role / Timing Role: Stable bias reference for error amplifiers and feedback networks in MIL-STD-704 compliant supplies. Use Value: JANTXV-qualified variants support full military screening; hermetic DO-7 package resists humidity-induced parameter shift.
Industrial Process Control Sensors	Downhole Oil & Gas Instrumentation
Use Scenario: Calibration reference in loop-powered 4–20 mA transmitters deployed in factory automation. IC Role / Device Role / Timing Role: Two-terminal shunt reference providing excitation and scaling for RTD/thermocouple interfaces. Use Value: 15 Ω zener impedance ensures stable output despite supply rail ripple; 500 mW rating supports 24 V loop designs.	Use Scenario: Voltage reference in pressure/temperature sensors operating at 150°C ambient in wellbore tools. IC Role / Device Role / Timing Role: Critical reference node in analog signal chains exposed to extreme thermal cycling and vibration. Use Value: –55°C to +100°C operating range (with derating) and radiation-hardened RH3156 option enable survivability in downhole electronics.

High-Precision Data Acquisition Systems

Military Power Supply References

Use Scenario: ADC/DAC reference voltage source in 16-bit+ measurement equipment requiring sub-0.01% drift over temperature.

IC Role / Device Role / Timing Role: Primary voltage reference for analog front-end signal conditioning and conversion stages.

Use Value: 26 mV max ΔV_ZT over –55°C to +100°C ensures <0.3 LSB error in 16-bit systems without calibration.

Use Scenario: Reference element in regulated DC-DC converters for avionics and vehicle control units.

IC Role / Device Role / Timing Role: Stable bias reference for error amplifiers and feedback networks in MIL-STD-704 compliant supplies.

Use Value: JANTXV-qualified variants support full military screening; hermetic DO-7 package resists humidity-induced parameter shift.

Industrial Process Control Sensors

Downhole Oil & Gas Instrumentation

Use Scenario: Calibration reference in loop-powered 4–20 mA transmitters deployed in factory automation.

IC Role / Device Role / Timing Role: Two-terminal shunt reference providing excitation and scaling for RTD/thermocouple interfaces.

Use Value: 15 Ω zener impedance ensures stable output despite supply rail ripple; 500 mW rating supports 24 V loop designs.

Use Scenario: Voltage reference in pressure/temperature sensors operating at 150°C ambient in wellbore tools.

IC Role / Device Role / Timing Role: Critical reference node in analog signal chains exposed to extreme thermal cycling and vibration.

Use Value: –55°C to +100°C operating range (with derating) and radiation-hardened RH3156 option enable survivability in downhole electronics.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
1N3157E3	Lower TC (0.001 %/°C) and tighter ΔV_ZT (13 mV); otherwise identical DO-7 package and 8.4 V nominal range	Better suited for ultra-stable metrology-grade references where <15 mV total drift is required	Select 1N3157E3 only if system-level TC budget demands improvement beyond 0.002 %/°C
LM399H	Monolithic buried-Zener IC with 5 ppm/°C TC, on-chip heater, and 6.95 V output - not a discrete diode	Used in laboratory-grade instruments requiring sub-ppm stability; needs external bias and thermal management	Choose LM399H only when absolute accuracy and long-term drift (<2 ppm/year) outweigh cost, size, and complexity penalties

Compared with 1N3156E3, 1N3157E3 offers marginally better temperature stability but same form factor and bias requirements, while LM399H delivers orders-of-magnitude lower drift at the cost of integration complexity, power consumption, and board space.

Availability

1N3156E3 is available at Aetrix Electronics and suitable for high-reliability power supply references, precision sensor signal conditioning, and military-grade analog circuitry requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for 1N3156E3 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, radiation-hardened, and precision analog components for aerospace, defense, and industrial markets.

The 1N3156E3 belongs to Microsemi's legacy JEDEC-registered Zener reference diode product line, designed specifically for applications demanding low-TC, hermetically sealed, and MIL-qualified voltage references in harsh environments.

FAQ

What is the nominal zener voltage and tolerance of the 1N3156E3?

The 1N3156E3 has a nominal zener voltage of 8.4 V with a standard tolerance of ±5%, corresponding to a specified range of 8.00–8.80 V at 10 mA test current. Tighter tolerances (e.g., ±1%, ±2%) are available via custom ordering with suffixes like "-1%" or "-2%", but the base 1N3156E3 part adheres to the ±5% JEDEC specification.

What does the "e3" suffix indicate on the 1N3156E3?

The "e3" suffix on 1N3156E3 denotes RoHS compliance, signifying that the device uses annealed matte-tin plating instead of traditional tin-lead terminations. This version is intended for commercial applications and excludes military variants, which retain tin-lead plating per MIL-STD-750 Method 2026.

Is the 1N3156E3 suitable for operation above +100°C?

No - the 1N3156E3 is rated for operation from –55°C to +100°C per its electrical characteristics table. While the package can withstand storage up to +175°C, voltage regulation performance (including ΔV_ZT = 26 mV) is only guaranteed within the –55°C to +100°C range. For higher ambient temperatures, consider the 1N3156A variant (rated to +150°C) or radiation-hardened RH3156.

How is polarity identified on the 1N3156E3 package?

The 1N3156E3 uses standard diode polarity marking: a visible cathode band is printed on the glass envelope near one end. During operation, the banded (cathode) terminal must be held positive relative to the anode to achieve proper reverse-biased zener conduction and stable 8.4 V reference output.

What is the maximum recommended operating current for optimal stability of the 1N3156E3?

Microsemi specifies 10.0 mA as the optimal zener test current (I_ZT) for achieving rated voltage and minimum temperature coefficient. Operating significantly below or above this value increases effective TC - e.g., at 7.5 mA, TC degrades by ~0.0012 %/°C per Figure 1. Therefore, 10 mA is the design target for best 1N3156E3 performance.

1N3156E3 Specifications

Product attributes: Attribute value

Manufacturer:: Microchip Technology

Series:: -

Package/Case:: DO-204AA, DO-7, Axial

Packaging:: Bulk

Product Status:: Active

Voltage - Zener (Nom) (Vz):: 8.4 V

Tolerance:: ±5%

Power - Max:: 500 mW

Impedance (Max) (Zzt):: 15 Ohms

Current - Reverse Leakage @ Vr:: 10 µA @ 5.5 V

Voltage - Forward (Vf) (Max) @ If:: -

Operating Temperature:: -65°C ~ 175°C

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: DO-7

1N3156E3 FAQ

1.How can I place an order for 1N3156E3 through Aetrix?

Please submit a Request for Quotation (RFQ) for 1N3156E3 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 1N3156E3 reliable?

The price and inventory of 1N3156E3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N3156E3 is usually 5 days.

3.What payment methods are accepted for 1N3156E3?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N3156E3 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 1N3156E3?

1N3156E3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 1N3156E3 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 1N3156E3?

For technical support, including 1N3156E3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N3156E3 requirements.

6.How does Aetrix verify that 1N3156E3 is sourced from the original manufacturer or authorized distributors?

All 1N3156E3 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 1N3156E3 meets industry standards.

7.What is the process for return or replacement of 1N3156E3?

All 1N3156E3 units undergo pre-shipment inspection (PSI). If there is an issue with 1N3156E3, 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 1N3156E3 part is unused and in its original packaging.

Return procedure for 1N3156E3:

1.Submit a request within 90 days.

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

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