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

Microchip Technology 1N758

Name: 1N758
Brand: Microchip Technology
SKU: 1N758
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 1N758

Manufacturer:: Microchip Technology

Category:: Single Zener Diodes

Package:: DO-204AH, DO-35, Axial

Datasheet:: 1N758.pdf

Description:: DIODE ZENER 10V 400MW DO204AH

Quantity:: RFQ Add To RFQ list

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Inventory:3,060

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Product details

Overview

1N758 from Microsemi is a 500 mW, 10.0 V ±5% silicon Zener diode in DO-35 (DO-204AH) glass axial-leaded package, qualified to JANTXV level per MIL-PRF-19500/127, with dynamic impedance of 7 Ω at 20 mA and temperature coefficient of +0.076 %/°C - used for precision voltage regulation in military power supplies and analog reference circuits.

For engineers reviewing the 1N758 datasheet, 1N758 pinout, 1N758 application, or 1N758 equivalent, key selection criteria include Zener voltage tolerance, junction-to-lead thermal resistance (250 °C/W), reverse leakage current (≤1 µA at 7.0 V), maximum Zener current (40 mA), and RoHS compliance status on commercial variants.

Technical Context

The 1N758 operates as a two-terminal voltage reference device, conducting in reverse breakdown to maintain stable 10.0 V across its terminals over current (5–40 mA) and temperature (−65 to +175 °C) ranges. Its metallurgically bonded junction ensures low noise and radiation hardness per MicroNote 050.

It exhibits a positive temperature coefficient (+0.076 %/°C) above 5 V, enabling predictable drift compensation in temperature-stable references. The DO-35 package provides hermetic sealing and solderability per MIL-STD-750 method 2026, with cathode indicated by band.

Key Specifications

Parameter	Value and Actual Design Meaning
Zener Voltage V_Z	10.0 V at I_ZT = 20 mA - defines nominal regulation point under standard test conditions
Zener Tolerance	±5% - corresponds to A-suffix per nomenclature; yields 9.5–10.5 V range at 25 °C
Zener Impedance Z_ZT	7 Ω at I_ZT = 20 mA - determines output voltage stability under load current variation
Max Reverse Current I_R	≤1 µA at V_R = 7.0 V - ensures low leakage in standby or high-impedance bias networks
Power Dissipation	0.5 W at T_L = 50 °C (0.375″ lead length) - sets thermal design limit for lead-mounted operation
Temp Coefficient αV_Z	+0.076 %/°C - quantifies voltage drift magnitude per degree rise above 25 °C
Junction Temp Range	−65 to +175 °C - supports operation in extended-environment military and aerospace systems

Pinout & Package

DO-35 (DO-204AH) hermetically sealed axial-leaded glass package with tin-lead or RoHS-compliant matte-tin plating; cathode identified by colored band; weight ≈0.2 g.

Pin/Terminal	Circuit Role	Design Meaning
Anode	Forward conduction terminal / Zener reference ground node	Connected to circuit common when used in reverse-biased regulation configuration
Cathode	Reverse breakdown terminal / regulated output node	Banded end; connected to regulated voltage rail; must be held positive relative to anode

Key Features

Feature	Design Value
MIL-PRF-19500/127 qualification	JANTXV-level reliability and screening for defense/aerospace use, including burn-in and life testing
Metallurgical bond construction	Enables inherent radiation hardness (per MicroNote 050) and low-noise voltage reference performance
Low dynamic impedance	7 Ω at 20 mA ensures <10 mV output shift per 1 mA load change in precision biasing applications
Minimal capacitance	Typical junction capacitance <2 pF - preserves high-frequency stability in RF bias and timing circuits
ESD robustness	Non-sensitive per MIL-STD-750 method 1020 - eliminates need for external ESD protection in handling

Applications

Power Supply Regulation	Analog Reference Circuit
Use Scenario: Stabilizing unregulated DC rails in legacy military power modules where space and cost constrain switching solutions. IC Role / Device Role / Timing Role: Two-terminal shunt regulator providing fixed 10.0 V reference for linear regulators and op-amp biasing. Use Value: Maintains ±0.5 V regulation over −55 to +125 °C ambient with ≤1 µA leakage below knee voltage.	Use Scenario: Generating stable bias voltages for instrumentation amplifiers and ADC front-ends in avionics data acquisition units. IC Role / Device Role / Timing Role: Precision voltage reference element in ratiometric sensor excitation and calibration subcircuits. Use Value: +0.076 %/°C tempco enables predictable drift modeling; 7 Ω Z_ZT minimizes gain error from load-induced sag.
Overvoltage Protection Clamp	Temperature-Compensated Reference
Use Scenario: Clamping transient spikes on 12 V vehicle subsystem buses in ruggedized ground-vehicle electronics. IC Role / Device Role / Timing Role: Passive crowbar element limiting voltage to 10.5 V peak during load-dump events. Use Value: Withstands 40 mA max Zener current and 260 °C solder reflow; hermetic DO-35 withstands mechanical shock.	Use Scenario: Paired with negative-tempco diodes in hybrid reference designs for zero-drift voltage standards. IC Role / Device Role / Timing Role: Positive-tempco component in compensated Zener reference strings for metrology-grade instruments. Use Value: Precisely characterized +0.076 %/°C coefficient allows matched cancellation with NTC elements within ±0.005 %/°C.

Power Supply Regulation

Analog Reference Circuit

Use Scenario: Stabilizing unregulated DC rails in legacy military power modules where space and cost constrain switching solutions.

IC Role / Device Role / Timing Role: Two-terminal shunt regulator providing fixed 10.0 V reference for linear regulators and op-amp biasing.

Use Value: Maintains ±0.5 V regulation over −55 to +125 °C ambient with ≤1 µA leakage below knee voltage.

Use Scenario: Generating stable bias voltages for instrumentation amplifiers and ADC front-ends in avionics data acquisition units.

IC Role / Device Role / Timing Role: Precision voltage reference element in ratiometric sensor excitation and calibration subcircuits.

Use Value: +0.076 %/°C tempco enables predictable drift modeling; 7 Ω Z_ZT minimizes gain error from load-induced sag.

Overvoltage Protection Clamp

Temperature-Compensated Reference

Use Scenario: Clamping transient spikes on 12 V vehicle subsystem buses in ruggedized ground-vehicle electronics.

IC Role / Device Role / Timing Role: Passive crowbar element limiting voltage to 10.5 V peak during load-dump events.

Use Value: Withstands 40 mA max Zener current and 260 °C solder reflow; hermetic DO-35 withstands mechanical shock.

Use Scenario: Paired with negative-tempco diodes in hybrid reference designs for zero-drift voltage standards.

IC Role / Device Role / Timing Role: Positive-tempco component in compensated Zener reference strings for metrology-grade instruments.

Use Value: Precisely characterized +0.076 %/°C coefficient allows matched cancellation with NTC elements within ±0.005 %/°C.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
1N4740A	10 V ±5%, 1 W rating, DO-41 package, 17 Ω Z_ZT, −65 to +200 °C T_J	Higher power but larger footprint; less stable regulation due to higher Z_ZT	Select for cost-sensitive commercial designs needing higher dissipation; not suitable for JANTXV-requiring programs
MMBZ5240BLT1G	10 V ±5%, 225 mW SOT-23, 20 Ω Z_ZT, −65 to +150 °C, RoHS only	Surface-mount, lower power, no military qualification; unsuitable for high-reliability through-hole layouts	Choose for space-constrained PCBs where MIL-spec is not required and reflow compatibility is critical

Compared with 1N758, the 1N4740A offers higher power but looser regulation stability and no military screening, while the MMBZ5240BLT1G provides SMT compatibility at the expense of radiation hardness, thermal resistance, and qualification pedigree.

Availability

1N758 is available at Aetrix Electronics and suitable for military power supply regulation, analog reference design, overvoltage clamping, and temperature-compensated reference circuits requiring stable component supply across long-lifecycle programs.

Supply support for 1N758 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 Corporation (now part of Microchip Technology) is a U.S.-based semiconductor company specializing in high-reliability, radiation-hardened, and defense-grade analog and mixed-signal components.

The 1N758 belongs to Microsemi's legacy MIL-PRF-19500/127-qualified Zener diode family, designed specifically for voltage regulation in mission-critical military, aerospace, and industrial control systems where long-term stability and environmental resilience are mandatory.

FAQ

What is the Zener voltage and tolerance of the 1N758?

The 1N758 has a nominal Zener voltage of 10.0 V at 20 mA test current, with a ±5% tolerance per its "A" suffix designation. This yields a guaranteed regulation range of 9.5 V to 10.5 V at 25 °C. The 1N758 datasheet specifies this value under JEDEC-standard test conditions with 20-second stabilization time after current application.

Is the 1N758 qualified to military specifications?

Yes, the 1N758 is qualified to JANTXV level per MIL-PRF-19500/127, including full screening for vibration, thermal shock, and life testing. The "-1" suffix in 1N758A-1 confirms JANTXV qualification. Commercial RoHS versions exist but lack military screening and are marked without the "-1" suffix.

What is the maximum power dissipation for the 1N758?

The 1N758 has an average rated power dissipation of 0.5 W when leads are held at 50 °C (0.375″ from body), derating linearly to zero at 175 °C. When mounted on a PCB, it is rated for 0.4 W at 55 °C ambient, per Figure 2 in the T4-LDS-0288 datasheet. Thermal resistance is 250 °C/W junction-to-lead and 300 °C/W junction-to-ambient.

Does the 1N758 have a positive or negative temperature coefficient?

The 1N758 has a positive temperature coefficient of +0.076 %/°C at 25 °C, increasing to +0.076 %/°C at +150 °C. This characteristic is typical for Zener diodes above ~5 V and enables predictable voltage drift modeling in temperature-compensated reference designs.

What package type and marking does the 1N758 use?

The 1N758 uses the DO-35 (DO-204AH) hermetically sealed axial-leaded glass package. It is marked with the full part number "1N758A-1", and polarity is indicated by a cathode band. Lead plating is tin-lead for military versions; RoHS-compliant matte-tin is available for commercial-grade units only.

1N758 Specifications

Product attributes: Attribute value

Manufacturer:: Microchip Technology

Series:: -

Package/Case:: DO-204AH, DO-35, Axial

Packaging:: Bulk

Product Status:: Active

Voltage - Zener (Nom) (Vz):: 10 V

Tolerance:: ±10%

Power - Max:: 400 mW

Impedance (Max) (Zzt):: 17 Ohms

Current - Reverse Leakage @ Vr:: 100 nA @ 1 V

Voltage - Forward (Vf) (Max) @ If:: 1.1 V @ 200 mA

Operating Temperature:: -65°C ~ 175°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: DO-204AH (DO-35)

1N758 FAQ

1.How can I place an order for 1N758 through Aetrix?

Please submit a Request for Quotation (RFQ) for 1N758 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 1N758 reliable?

The price and inventory of 1N758 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N758 is usually 5 days.

3.What payment methods are accepted for 1N758?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N758 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 1N758?

1N758 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 1N758 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 1N758?

For technical support, including 1N758 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N758 requirements.

6.How does Aetrix verify that 1N758 is sourced from the original manufacturer or authorized distributors?

All 1N758 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 1N758 meets industry standards.

7.What is the process for return or replacement of 1N758?

All 1N758 units undergo pre-shipment inspection (PSI). If there is an issue with 1N758, 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 1N758 part is unused and in its original packaging.

Return procedure for 1N758:

1.Submit a request within 90 days.

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

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