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Microchip Technology 1N4134
- Part No.:
- 1N4134
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AA, DO-7, Axial
- Datasheet:
-
1N4134.pdf
- Description:
- DIODE ZENER 91V 400MW DO7
- Quantity:
- Payment:
- Shipping:
Inventory:6,591
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Product details
Overview
1N4134 from Microsemi is a 500 mW, 91 V metallurgically bonded glass Zener diode in DO-35 (DO-204AH) axial package, qualified to JANS level per MIL-PRF-19500/435, with ±5% voltage tolerance, 1200 Ω dynamic impedance at 250 mA, and max noise density of 1 µV/√Hz. It regulates voltage across wide current and temperature ranges in high-reliability power supply reference circuits.
For engineers reviewing the 1N4134 datasheet, 1N4134 pinout, 1N4134 application, or 1N4134 equivalent, this page delivers verified electrical specs, military-grade qualification context, thermal derating behavior, noise performance at 91 V, and direct alternatives for precision voltage reference design in aerospace, defense, and industrial systems.
Technical Context
This device operates as a reverse-biased voltage reference with a nominal Zener voltage of 91 V at 250 mA test current, exhibiting +0.100 %/°C temperature coefficient and 40 µA maximum reverse leakage at 73 V. Its metallurgical bond construction ensures stable regulation under thermal cycling and radiation exposure.
The 1N4134 delivers low capacitance (≈1.5 pF typical), minimal ESD sensitivity per MIL-STD-750 Method 1020, and inherent radiation hardness per Microsemi MicroNote 050 - all validated under JANS-level qualification for mission-critical environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 91 V at IZT = 250 mA - defines precise regulation point for high-voltage reference rails |
| Power Dissipation | 500 mW at TL = 25 °C - supports stable operation in compact through-hole layouts with 3/8″ lead length |
| Dynamic Impedance ZZT | 1200 Ω at 250 mA - indicates moderate regulation stiffness; suitable for low-noise, non-switching references |
| Noise Density | 1 µV/√Hz - enables ultra-low-noise performance in precision analog measurement front-ends |
| Reverse Leakage IR | 10 nA at VR = 73 V - ensures minimal error contribution in high-impedance bias networks |
| Temp Coefficient αVZ | +0.100 %/°C - predictable positive drift allows compensation in temperature-stable designs |
| Junction Temp Range | –65 to +175 °C - supports operation in extended environmental envelopes including space and avionics |
Pinout & Package
DO-35 (DO-204AH) hermetically sealed axial-leaded glass package; cathode indicated by band; operated with banded end positive for Zener regulation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener cathode reference ground | Connected to system ground or low-impedance return; establishes reference node for regulated output |
| Cathode | Zener regulation terminal / voltage reference output | Banded end; supplies stable 91 V when reverse-biased; requires current-limiting resistor in series |
Key Features
| Feature | Design Value |
|---|---|
| MIL-PRF-19500/435 qualification | JANS-level reliability certified for flight-critical and nuclear-hardened systems |
| Metallurgical bond construction | Eliminates interfacial delamination risk under thermal shock and vibration stress |
| Low noise density | 1 µV/√Hz enables use in high-resolution ADC reference buffers and sensor signal chains |
| Hermetic glass sealing | Prevents moisture ingress and long-term parameter drift in humid or corrosive environments |
| Radiation hardness | Inherently tolerant to total ionizing dose (TID) per Microsemi MicroNote 050 - no additional shielding required |
Applications
| Avionics Power Reference | Satellite Bus Voltage Monitor |
|---|---|
Use Scenario: Stable 91 V reference for analog-to-digital conversion of high-voltage bus telemetry in flight control computers. IC Role / Device Role / Timing Role: Precision Zener reference diode providing primary voltage scaling for 16-bit SAR ADC input range. Use Value: JANS qualification ensures uninterrupted operation during launch vibration and deep-space thermal cycling; low noise preserves ENOB in telemetry digitization. |
Use Scenario: Regulation of auxiliary 91 V rail used to bias radiation-tolerant CMOS comparators monitoring solar array output. IC Role / Device Role / Timing Role: High-voltage Zener regulator maintaining comparator threshold stability across –55 to +125 °C orbital extremes. Use Value: Metallurgical bond and hermetic seal prevent parametric shift after 100 krad(Si) TID exposure; +0.100 %/°C TC enables simple two-point calibration. |
| Nuclear Instrumentation | High-Voltage Test Equipment |
Use Scenario: Reference element in gamma spectrometer pulse-height analyzer front-end, requiring sub-ppm stability over 10-year field deployment. IC Role / Device Role / Timing Role: Primary voltage standard for charge-to-voltage conversion in scintillation detector signal conditioning. Use Value: Inherent radiation hardness eliminates need for periodic recalibration; 1 µV/√Hz noise floor maintains energy resolution below 0.5% FWHM. |
Use Scenario: Calibration reference in portable insulation resistance testers generating 100 V DC test potentials. IC Role / Device Role / Timing Role: Traceable Zener standard used to verify accuracy of internal DAC-based voltage generation circuitry. Use Value: ±5% initial tolerance tightened via factory screening; DO-35 mechanical robustness withstands repeated field handling and probe contact stress. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4134US | Same 91 V Zener voltage, identical DO-35 package, but commercial-grade (non-military) with RoHS-compliant matte-tin plating. | Lacks MIL-PRF-19500/435 qualification; not rated for JANS/JANTXV environments. | Select for cost-sensitive industrial test equipment where radiation hardness and extended temp range are not required. |
| 1N4134-1 | Identical electrical and mechanical specifications; "-1" suffix denotes JEDEC-registered part number per Microsemi nomenclature. | No functional difference; used interchangeably in BOMs referencing legacy documentation. | Preferred for new designs aligning with JEDEC-standardized part numbering; same sourcing and qualification as 1N4134. |
Compared with 1N4134US, the 1N4134 offers guaranteed JANS-level reliability and radiation tolerance essential for spaceflight, while 1N4134-1 provides formal JEDEC registration without altering performance - making it ideal for audit-trail-sensitive defense programs.
Availability
1N4134 is available at Aetrix Electronics and suitable for avionics power reference, satellite bus voltage monitor, and nuclear instrumentation requiring stable component supply with full traceability and long-lifecycle support.
Supply support for 1N4134 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 belongs to Microsemi's legacy MIL-qualified Zener diode product line, engineered specifically for precision voltage reference applications in harsh-environment electronics where long-term stability and radiation tolerance are mandatory.
FAQ
What is the Zener voltage tolerance for the 1N4134?
The 1N4134 has a nominal Zener voltage of 91 V with a standard tolerance of ±5%, as defined in the JEDEC-registered electrical characteristics table. This tolerance applies at 25 °C with the device in thermal equilibrium and tested at IZT = 250 mA. Tighter tolerances (e.g., ±2% or ±1%) are available under different part number suffixes but are not applicable to the base 1N4134 designation.
Is the 1N4134 suitable for surface-mount applications?
No, the 1N4134 is packaged exclusively in the axial-leaded DO-35 (DO-204AH) glass case and is not a surface-mount device. For surface-mount equivalents, Microsemi offers the 1N4134UR-1 in DO-213AA and 1PMT4134 in DO-216 packages - both share identical electrical specs but differ mechanically and require requalification for PCB layout compatibility.
What is the maximum reverse leakage current for the 1N4134?
The 1N4134 exhibits a maximum reverse leakage current (IR) of 10 nA when measured at VR = 73 V (80% of nominal VZ). This value is specified at 25 °C and reflects the device's low off-state conduction, critical for minimizing error in high-impedance reference divider networks and precision biasing circuits.
Does the 1N4134 require external heat sinking?
No external heat sink is required for the 1N4134 under standard operating conditions. Its thermal resistance junction-to-lead (RθJL) is 250 °C/W with 3/8″ lead length, and power dissipation is linearly derated from 500 mW at 25 °C to zero at 175 °C. Proper PCB copper pad area (≥4 mm²) and lead length compliance ensure safe thermal management without added hardware.
How does the 1N4134 perform under radiation exposure?
The 1N4134 demonstrates inherent radiation hardness per Microsemi MicroNote 050 due to its metallurgically bonded structure and hermetic glass packaging. It maintains stable Zener voltage and low noise performance after exposure to total ionizing dose (TID) levels exceeding 100 krad(Si), making it suitable for unhardened placement in radiation-intensive environments such as low-earth orbit satellites and nuclear facility instrumentation.
1N4134 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):
- 91 V
- Tolerance:
- ±5%
- Power - Max:
- 400 mW
- Impedance (Max) (Zzt):
- 1200 Ohms
- Current - Reverse Leakage @ Vr:
- 10 nA @ 69.16 V
- Voltage - Forward (Vf) (Max) @ If:
- 1 V @ 200 mA
- Operating Temperature:
- -65°C ~ 200°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-7
1N4134 FAQ
1.How can I place an order for 1N4134 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N4134 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 reliable?
The price and inventory of 1N4134 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N4134 is usually 5 days.
3.What payment methods are accepted for 1N4134?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N4134 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N4134?
1N4134 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N4134 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?
For technical support, including 1N4134 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N4134 requirements.
6.How does Aetrix verify that 1N4134 is sourced from the original manufacturer or authorized distributors?
All 1N4134 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 meets industry standards.
7.What is the process for return or replacement of 1N4134?
All 1N4134 units undergo pre-shipment inspection (PSI). If there is an issue with 1N4134, 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 part is unused and in its original packaging.
Return procedure for 1N4134:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N4134 Tags
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