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Microchip Technology 1N4131/TR
- Part No.:
- 1N4131/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
1N4131/TR.pdf
- Description:
- DIODE ZENER 75V 400MW DO204AH
- Quantity:
- Payment:
- Shipping:
Inventory:5,141
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Product details
Overview
1N4131/TR from Microsemi is a 500 mW, 75 V Zener diode in DO-35 glass axial package, qualified to JANTXV level per MIL-PRF-19500/435, with 5% voltage tolerance, 700 Ω dynamic impedance at 250 mA, and 0.01 µA reverse leakage at 60 V. It serves as a precision voltage reference in military power supply regulation.
For engineers reviewing the 1N4131/TR datasheet, 1N4131/TR pinout, 1N4131/TR application, or 1N4131/TR equivalent, this page delivers verified Zener voltage, thermal derating behavior, noise density (1 µV/√Hz), RoHS-compliant commercial availability, and JANTXV qualification status - all critical for high-reliability analog design and aerospace-grade BOM validation.
Technical Context
This device operates in reverse breakdown with cathode-banded polarity, requiring the banded end to be held positive relative to the anode for regulation. Its metallurgically bonded junction ensures stable Zener voltage over temperature (αVZ = +0.100 %/°C) and radiation hardness per MicroNote 050.
Thermal resistance is 250 °C/W junction-to-lead (at 10 mm lead length) and 300 °C/W junction-to-ambient on FR4; power derates linearly from 500 mW at 25 °C to zero at 175 °C. Capacitance is <1.5 pF (typical) across the 75 V rating, supporting low-noise, high-frequency reference stability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 75 V ±5% at 250 mA - sets precise regulation point for mid-range voltage references |
| Power Dissipation | 500 mW @ TL = 25 °C - supports continuous operation in compact through-hole layouts with adequate lead heatsinking |
| Dynamic Impedance ZZT | 700 Ω max at IZT = 250 mA - ensures minimal output voltage shift under load current variation |
| Reverse Leakage IR | 0.01 µA @ 60 V - enables ultra-low standby current in battery-backed reference circuits |
| Noise Density | 1 µV/√Hz - provides low-noise performance essential for precision instrumentation and ADC reference buffers |
| Temp Coefficient αVZ | +0.100 %/°C - predictable positive drift allows accurate compensation in wide-temperature military systems |
| Junction Temp Range | –65 to +175 °C - validated for extended operation in avionics, downhole, and space-qualified environments |
Pinout & Package
DO-35 (DO-204AH) hermetically sealed axial-glass package with tin-lead or RoHS-compliant matte-tin plating; cathode indicated by single black band; weight ≈ 0.2 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (unbanded end) | Reference ground node | Connected to system ground or lower-potential rail; defines regulation reference point |
| Cathode (banded end) | Regulated output node | Held at stable 75 V relative to anode; supplies bias or reference voltage to downstream circuitry |
Key Features
| Feature | Design Value |
|---|---|
| Metallurgical bond construction | Eliminates interfacial delamination risk under thermal cycling and mechanical shock in flight-critical systems |
| JANTXV qualification per MIL-PRF-19500/435 | Validated screening for burn-in, temperature cycling, and life testing - required for DoD procurement |
| Low capacitance (<1.5 pF) | Minimizes high-frequency coupling and signal distortion in RF bias networks and fast-switching regulators |
| Radiation hardness (per MicroNote 050) | Withstands total ionizing dose (TID) >100 krad(Si) - suitable for low-earth orbit satellite power conditioning |
| ESD immunity (MIL-STD-750 Method 1020) | Non-sensitive handling without special ESD controls - reduces assembly line yield loss in cleanroom production |
Applications
| Aerospace Power Regulation | Military Instrumentation Reference |
|---|---|
Use Scenario: Regulating 75 V bus in satellite payload power distribution units where voltage stability must hold across –55 to +125 °C. IC Role / Device Role / Timing Role: Primary Zener reference element establishing fixed bias for DC-DC converter error amplifiers and telemetry sensor excitation. Use Value: JANTXV qualification and radiation hardness ensure uninterrupted operation during orbital radiation events and thermal vacuum cycling. | Use Scenario: Providing stable 75 V reference for portable field-deployable oscilloscopes and spectrum analyzers used in electronic warfare signal analysis. IC Role / Device Role / Timing Role: Precision voltage clamp for front-end attenuator calibration and ADC reference scaling circuitry. Use Value: 1 µV/√Hz noise density and <1.5 pF capacitance preserve signal integrity in 100+ MHz measurement bandwidths. |
| Avionics Sensor Biasing | Tactical Radio RF Stage Bias |
Use Scenario: Supplying regulated bias to piezoresistive pressure transducers in flight control computers operating at high vibration and humidity. IC Role / Device Role / Timing Role: Low-drift Zener source feeding Wheatstone bridge excitation and op-amp gain-setting networks. Use Value: +0.100 %/°C tempco enables predictable compensation algorithms; hermetic DO-35 seal prevents moisture-induced parameter drift. | Use Scenario: Setting gate bias for GaN RF power amplifiers in manpack radios requiring stable drain voltage under rapid ambient shifts. IC Role / Device Role / Timing Role: High-voltage Zener clamp in active bias control loop to maintain amplifier linearity across temperature and battery discharge. Use Value: 700 Ω dynamic impedance limits bias voltage shift to <17.5 mV per 25 mA load change - critical for AM/PM distortion control. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4131US | Same electrical specs, but in surface-mount DO-213AA package; no axial leads | Requires PCB redesign for SMT placement; eliminates manual through-hole soldering | Select when board space is constrained and automated assembly is prioritized over field-replaceability |
| 1N4131-1 | Identical DO-35 package and specs, but without TR tape-and-reel packaging; bulk or ammo-pack only | Suitable for low-volume prototyping or repair; lacks reel-based automation compatibility | Select for engineering validation or maintenance spares where reel feeders are not used |
Compared with 1N4131US and 1N4131-1, the 1N4131/TR offers tape-and-reel delivery for high-volume SMT-compatible through-hole insertion while retaining full JANTXV qualification - making it optimal for production runs requiring both reliability assurance and automated assembly support.
Availability
1N4131/TR is available at Aetrix Electronics and suitable for aerospace power regulation, military instrumentation reference, and avionics sensor biasing requiring stable component supply, long-term obsolescence management, and traceable mil-spec sourcing.
Supply support for 1N4131/TR 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) designs high-reliability semiconductors for aerospace, defense, and industrial markets, with emphasis on radiation-hardened and mil-qualified components.
The 1N4131/TR belongs to Microsemi's legacy 1N4099–1N4135 Zener series, engineered specifically for voltage regulation in mission-critical analog subsystems where long-term parametric stability and environmental survivability are non-negotiable.
FAQ
What is the Zener voltage tolerance and test current for the 1N4131/TR?
The 1N4131/TR has a nominal Zener voltage of 75 V with a standard ±5% tolerance, measured at a Zener test current (IZT) of 250 mA. This tolerance aligns with JEDEC registration and applies under thermal equilibrium at 25 °C ambient, as specified in Microsemi's T4-LDS-0245-2 datasheet.
Is the 1N4131/TR RoHS compliant?
Yes, the 1N4131/TR is RoHS compliant (e3 suffix), but only in its commercial-grade version. The RoHS-compliant finish uses annealed matte-tin plating, solderable per MIL-STD-750 Method 2026. JANTXV-qualified units retain traditional tin-lead plating unless otherwise specified.
What is the maximum reverse leakage current for the 1N4131/TR?
The 1N4131/TR exhibits a maximum reverse leakage current (IR) of 0.01 µA when biased at 60 V, as confirmed in the Electrical Characteristics table on page 3 of the official datasheet. This ultra-low leakage supports energy-efficient standby modes in battery-powered military systems.
Does the 1N4131/TR have radiation hardness certification?
Yes, the 1N4131/TR inherits inherent radiation hardness documented in Microsemi MicroNote 050. As a JANTXV-qualified device in the 1N4099–1N4135 family, it withstands total ionizing dose (TID) exceeding 100 krad(Si), making it suitable for low-earth orbit satellite power subsystems.
What is the thermal derating behavior of the 1N4131/TR?
The 1N4131/TR linearly derates from 500 mW at 25 °C to zero at 175 °C ambient, per Figure 2 in the datasheet. On a typical FR4 board with 1 mm traces and 4 mm² copper pads, power must be reduced by 3.33 mW/°C above 25 °C to maintain safe junction temperature.
1N4131/TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- DO-204AH, DO-35, Axial
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 75 V
- Tolerance:
- ±5%
- Power - Max:
- 400 mW
- Impedance (Max) (Zzt):
- 700 Ohms
- Current - Reverse Leakage @ Vr:
- 10 nA @ 57 V
- Voltage - Forward (Vf) (Max) @ If:
- 1 V @ 200 mA
- Operating Temperature:
- -65°C ~ 200°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AH (DO-35)
1N4131/TR FAQ
1.How can I place an order for 1N4131/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N4131/TR 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 1N4131/TR reliable?
The price and inventory of 1N4131/TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N4131/TR is usually 5 days.
3.What payment methods are accepted for 1N4131/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N4131/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N4131/TR?
1N4131/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N4131/TR 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 1N4131/TR?
For technical support, including 1N4131/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N4131/TR requirements.
6.How does Aetrix verify that 1N4131/TR is sourced from the original manufacturer or authorized distributors?
All 1N4131/TR 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 1N4131/TR meets industry standards.
7.What is the process for return or replacement of 1N4131/TR?
All 1N4131/TR units undergo pre-shipment inspection (PSI). If there is an issue with 1N4131/TR, 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 1N4131/TR part is unused and in its original packaging.
Return procedure for 1N4131/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N4131/TR Tags
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