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Microchip Technology 1N4134-1
- Part No.:
- 1N4134-1
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
1N4134-1.pdf
- Description:
- DIODE ZENER 91V 500MW DO204AH
- Quantity:
- Payment:
- Shipping:
Inventory:2,719
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Product details
Overview
1N4134-1 from Microsemi is a 500 mW, 91 V, ±5% tolerance metallurgically bonded glass Zener diode in DO-35 (DO-204AH) axial-leaded package, qualified to JANS level per MIL-PRF-19500/435 for high-reliability voltage regulation in aerospace and defense power supplies.
For engineers reviewing the 1N4134-1 datasheet, 1N4134-1 pinout, 1N4134-1 application, or 1N4134-1 equivalent, this part delivers stable 91 V regulation with 4.2 mA maximum Zener current, 1200 Ω dynamic impedance at 250 mA test current, and low noise density (1 µV/√Hz), critical for precision reference and radiation-hardened systems.
Technical Context
The 1N4134-1 operates as a reverse-biased voltage reference with a nominal Zener voltage of 91 V at 250 mA test current (IZT), exhibiting a positive temperature coefficient of +0.100 %/°C and maximum reverse leakage of 0.01 µA at 73 V (80% of VZ). Its metallurgical bond ensures mechanical robustness under thermal cycling and shock.
Designed for operation at lead temperature (TL) up to 175 °C, it features linear power derating from 500 mW at 25 °C to zero at 175 °C, with junction-to-lead thermal resistance of 250 °C/W when mounted with 10 mm lead length, enabling reliable performance in high-temperature avionics environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 91 V at 250 mA - defines precise regulation point for high-voltage reference circuits |
| Power Dissipation | 500 mW at 25 °C - supports stable operation in compact, conduction-cooled designs |
| Zener Impedance (ZZT) | 1200 Ω at 250 mA - indicates moderate AC impedance for ripple rejection in analog references |
| Reverse Leakage (IR) | 0.01 µA at 73 V - ensures minimal error current in high-impedance bias networks |
| Noise Density (ND) | 1 µV/√Hz - enables ultra-low-noise performance in precision instrumentation references |
| Temp. Coefficient (αVZ) | +0.100 %/°C - allows predictable drift compensation in temperature-stable references |
| Max Zener Current (IZM) | 69.2 mA - sets safe DC operating limit under full-rated power at elevated temperatures |
Pinout & Package
DO-35 (DO-204AH) hermetically sealed axial-leaded glass package with cathode indicated by 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 | Forward conduction terminal / Zener cathode reference ground | Connected to circuit common; reverse voltage applied between cathode and anode to activate regulation |
| Cathode | Zener regulation output / voltage reference node | Banded end; held at stable 91 V above anode potential during breakdown operation |
Key Features
| Feature | Design Value |
|---|---|
| Metallurgical bond construction | Ensures mechanical integrity and long-term stability under thermal cycling and vibration stress |
| JANS-level qualification | Validated for space-grade reliability per MIL-PRF-19500/435, including radiation hardness per MicroNote 050 |
| Low noise density | 1 µV/√Hz at 91 V enables use in high-resolution ADC references and metrology systems |
| Hermetic glass sealing | Prevents moisture ingress and parameter drift in harsh environmental conditions (−65 to +175 °C) |
| ESD immunity | Non-sensitive to ESD per MIL-STD-750 method 1020 - eliminates need for external protection in handling |
Applications
| Aerospace Power Reference | Defense System Bias Network |
|---|---|
Use Scenario: Providing stable 91 V reference for analog-to-digital converter front-ends in satellite telemetry units. IC Role / Device Role / Timing Role: Precision Zener voltage reference establishing absolute scaling for 16-bit data acquisition. Use Value: Low 1 µV/√Hz noise and JANS qualification ensure measurement accuracy and mission-critical reliability over 15-year orbital lifetime. | Use Scenario: Setting bias points for RF amplifier stages in radar transceiver modules operating at −55 to +125 °C. IC Role / Device Role / Timing Role: High-voltage Zener regulator maintaining stable quiescent current despite wide temperature swings. Use Value: +0.100 %/°C tempco and hermetic DO-35 package enable predictable drift compensation and zero parameter shift after thermal shock. |
| Radiation-Hardened Instrumentation | Nuclear Facility Monitoring |
Use Scenario: Serving as primary voltage reference in neutron flux monitoring electronics deployed inside reactor containment. IC Role / Device Role / Timing Role: Radiation-tolerant Zener element providing traceable calibration standard unaffected by total ionizing dose. Use Value: Inherent radiation hardness per MicroNote 050 eliminates need for shielding or redundancy, reducing system mass and complexity. | Use Scenario: Regulating supply rails for gamma spectrometer pulse-height analyzers exposed to high ambient gamma fields. IC Role / Device Role / Timing Role: High-voltage Zener clamp protecting downstream CMOS logic from transient overvoltage events. Use Value: 1200 Ω dynamic impedance and 0.01 µA leakage preserve signal fidelity while absorbing ionization-induced transients. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4134UR-1 | Same 91 V Zener voltage and 500 mW rating, but in DO-213AA surface-mount package | Enables automated SMT assembly; lacks axial-lead flexibility for through-hole prototyping or high-vibration mounting | Select when board space is constrained and reflow compatibility is required |
| 1N4134-1e3 | Identical electrical specs and DO-35 package, but RoHS-compliant matte-tin plating (commercial grade only) | Not qualified to JAN/JANTXV/JANS levels; unsuitable for military/aerospace programs requiring MIL-PRF-19500 certification | Select for commercial industrial systems where RoHS compliance is mandated and mil-spec is not required |
Compared with 1N4134UR-1 and 1N4134-1e3, the 1N4134-1 uniquely combines JANS-level qualification, axial-leaded DO-35 mechanical robustness, and radiation hardness-making it the sole choice for flight-critical voltage references where traceable mil-spec pedigree is mandatory.
Availability
1N4134-1 is available at Aetrix Electronics and suitable for aerospace power reference, defense system bias network, and radiation-hardened instrumentation requiring stable component supply with full traceability and mil-spec documentation.
Supply support for 1N4134-1 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 analog and mixed-signal components for aerospace, defense, and industrial markets.
The 1N4134-1 belongs to Microsemi's legacy MIL-PRF-19500/435-qualified Zener diode family, engineered specifically for voltage reference stability, radiation tolerance, and long-term parametric consistency in mission-critical systems.
FAQ
What is the Zener voltage tolerance for 1N4134-1?
The 1N4134-1 has a nominal Zener voltage of 91 V with a standard tolerance of ±5%, as defined by JEDEC registration and confirmed in the Electrical Characteristics table on page 3 of T4-LDS-0245-2 Rev. 1. This tolerance applies under thermal equilibrium at 25 °C with 250 mA test current (IZT), and no tighter tolerance option (e.g., 2% or 1%) is listed for this specific part number in the datasheet.
Is 1N4134-1 qualified to JANS level?
Yes, the 1N4134-1 is qualified to JANS level per MIL-PRF-19500/435, as explicitly stated in the DESCRIPTION section on page 1 of T4-LDS-0245-2 Rev. 1. This qualification covers all reliability levels including JAN, JANTX, JANTXV, and JANS, confirming its suitability for spaceflight and nuclear-hardened applications.
What is the maximum Zener current (IZM) for 1N4134-1?
The maximum Zener current (IZM) for 1N4134-1 is 69.2 mA, as specified in the Electrical Characteristics table on page 3 of T4-LDS-0245-2 Rev. 1. This value corresponds to the current at which the device dissipates its rated 500 mW at 91 V, and must be respected to avoid thermal runaway under sustained DC operation.
Does 1N4134-1 have RoHS compliance?
The base 1N4134-1 is not RoHS compliant; RoHS compliance is only available in the commercial-grade variant designated as 1N4134-1e3, which uses annealed matte-tin plating. The standard 1N4134-1 retains tin-lead plating and is intended for mil-spec applications where RoHS exemption applies per MIL-PRF-19500/435.
What is the noise density specification for 1N4134-1?
The noise density for 1N4134-1 is 1 µV/√Hz, as listed in the Electrical Characteristics table on page 3 of T4-LDS-0245-2 Rev. 1. This value is measured at 25 °C ambient using a 1 kHz–3 kHz bandpass filter and 250 mA Zener test current (IZT), and reflects its ultra-low-noise performance among high-voltage Zener diodes.
1N4134-1 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):
- 91 V
- Tolerance:
- ±5%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 1200 Ohms
- Current - Reverse Leakage @ Vr:
- 10 nA @ 69.2 V
- Voltage - Forward (Vf) (Max) @ If:
- 1.1 V @ 200 mA
- Operating Temperature:
- -65°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AH (DO-35)
1N4134-1 FAQ
1.How can I place an order for 1N4134-1 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N4134-1 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 1N4134-1 reliable?
The price and inventory of 1N4134-1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N4134-1 is usually 5 days.
3.What payment methods are accepted for 1N4134-1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N4134-1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N4134-1?
1N4134-1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N4134-1 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 1N4134-1?
For technical support, including 1N4134-1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N4134-1 requirements.
6.How does Aetrix verify that 1N4134-1 is sourced from the original manufacturer or authorized distributors?
All 1N4134-1 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 1N4134-1 meets industry standards.
7.What is the process for return or replacement of 1N4134-1?
All 1N4134-1 units undergo pre-shipment inspection (PSI). If there is an issue with 1N4134-1, 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 1N4134-1 part is unused and in its original packaging.
Return procedure for 1N4134-1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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