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Microchip Technology 1N4135
- Part No.:
- 1N4135
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
1N4135.pdf
- Description:
- DIODE ZENER
- Quantity:
- Payment:
- Shipping:
Inventory:5,839
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Product details
Overview
1N4135 from Microsemi is a 500 mW, 100 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 systems.
For engineers reviewing the 1N4135 datasheet, 1N4135 pinout, 1N4135 application, or 1N4135 equivalent, this part delivers low-noise (3.8 µV/√Hz), stable temperature coefficient (+0.100 %/°C), and hermetic glass sealing suitable for precision reference and radiation-hardened environments.
Technical Context
The 1N4135 operates as a reverse-biased Zener regulator with nominal VZ = 100 V at IZT = 250 mA, dynamic impedance ZZT = 1600 Ω, and maximum reverse leakage IR = 0.01 µA at VR = 76 V. Its metallurgical bond ensures low noise density and long-term stability under thermal cycling.
It exhibits a positive temperature coefficient of +0.100 %/°C and is rated for junction temperatures from –65 °C to +175 °C. Power derating begins linearly at TL = 50 °C, reaching zero dissipation at 175 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 100 V ±5% at 250 mA - defines precise regulation point for high-voltage reference circuits |
| Power Dissipation PM(AV) | 500 mW - supports stable operation up to 25 °C ambient before linear derating applies |
| Zener Impedance ZZT | 1600 Ω - indicates moderate AC impedance affecting regulation accuracy under varying load |
| Noise Density ND | 3.8 µV/√Hz - enables low-noise performance in precision analog references and metrology |
| Temp Coefficient αVZ | +0.100 %/°C - provides predictable, monotonic drift for compensated reference designs |
| Reverse Leakage IR | 0.01 µA @ 76 V - ensures minimal standby current in high-impedance bias networks |
| Junction Temp Range | –65 °C to +175 °C - supports operation in extreme environmental conditions including space-grade applications |
Pinout & Package
Package: DO-35 (DO-204AH), axial-leaded, hermetically sealed glass case with cathode band marking. Cathode is banded end; device operates with banded end positive relative to anode during Zener regulation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Reference ground node | Connected to system ground or lowest potential; forms return path for Zener current |
| Cathode | Regulated output node | Banded terminal; supplies stable 100 V reference when reverse-biased above breakdown |
Key Features
| Feature | Design Value |
|---|---|
| Metallurgical bond construction | Eliminates interfacial delamination risk, ensuring long-term parameter stability under thermal stress |
| MIL-PRF-19500/435 qualification (JANS level) | Validated reliability for flight-critical systems including radiation-tolerant avionics and satellite power management |
| Hermetic glass DO-35 package | Prevents moisture ingress and contamination, enabling >20-year shelf life and operation in vacuum environments |
| Low capacitance (typ. <1.5 pF) | Minimizes high-frequency coupling and signal distortion in RF bias and timing reference circuits |
| Non-ESD-sensitive per MIL-STD-750 Method 1020 | Allows handling without special ESD controls during assembly, reducing manufacturing overhead |
Applications
| High-Voltage Reference Source | Aerospace Power Monitor |
|---|---|
Use Scenario: Generating a stable 100 V reference for calibration of high-range voltmeters and data acquisition front-ends. IC Role / Device Role / Timing Role: Zener diode acting as primary voltage reference element in a precision divider network. Use Value: ±5% initial tolerance and +0.100 %/°C TC enable traceable, temperature-compensated measurements across –55 °C to +125 °C operating range. |
Use Scenario: Monitoring bus voltage in radiation-hardened satellite power distribution units. IC Role / Device Role / Timing Role: Standby Zener clamp protecting monitoring circuitry against overvoltage transients. Use Value: Hermetic DO-35 package and JANS qualification ensure uninterrupted operation in total ionizing dose (TID) environments exceeding 100 krad(Si). |
| Defense System Bias Network | Nuclear Instrumentation Reference |
Use Scenario: Providing regulated bias for photomultiplier tube (PMT) dynode chains in tactical radar receivers. IC Role / Device Role / Timing Role: High-voltage Zener regulator establishing cascaded dynode potentials. Use Value: Low 3.8 µV/√Hz noise density preserves signal-to-noise ratio in ultra-low-current detection paths. |
Use Scenario: Serving as primary reference in portable gamma spectrometers requiring long-term calibration stability. IC Role / Device Role / Timing Role: Precision voltage standard for ADC reference scaling and energy binning logic. Use Value: Metallurgical bond and MIL-qualified construction guarantee <0.01% parametric drift over 10-year field deployment. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4135UR-1 | Same electrical specs; surface-mount DO-213AA package instead of axial DO-35 | Requires SMT reflow process; eliminates through-hole mounting and lead trimming | Select for automated PCB assembly where board space and mechanical robustness outweigh axial-lead serviceability |
| 1N4135-1 (JANTXV) | Identical electrical and mechanical specs; higher screening level (JANTXV vs commercial or JAN) | Required for programs demanding extended burn-in, lot traceability, and enhanced test coverage | Select when full MIL-PRF-19500/435 JANTXV compliance is mandated by system-level qualification requirements |
Compared with 1N4135UR-1 and 1N4135-1 (JANTXV), the base 1N4135 offers optimal cost-performance balance for commercial and JAN-level programs where axial-leaded mounting and standard screening suffice.
Availability
1N4135 is available at Aetrix Electronics and suitable for aerospace power monitors, nuclear instrumentation references, defense system bias networks, and high-voltage reference sources requiring stable component supply across extended lifecycle windows.
Supply support for 1N4135 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 manufacturer specializing in high-reliability analog and mixed-signal components for aerospace, defense, and industrial markets.
The 1N4135 belongs to Microsemi's legacy MIL-qualified Zener diode product line, engineered specifically for precision voltage regulation in mission-critical systems where long-term stability and radiation tolerance are mandatory.
FAQ
What is the Zener voltage tolerance for the 1N4135?
The 1N4135 has a nominal Zener voltage of 100 V with a standard tolerance of ±5%, as defined in the JEDEC-registered electrical characteristics table. This tolerance applies at IZT = 250 mA and 25 °C ambient temperature, and is confirmed in the T4-LDS-0245-2 datasheet revision 1.
Is the 1N4135 suitable for space applications?
Yes - the 1N4135 is qualified to JANS level per MIL-PRF-19500/435, making it suitable for space applications requiring radiation hardness, hermetic sealing, and extended temperature operation from –65 °C to +175 °C. The 1N4135's metallurgical bond and low noise density further support use in satellite power and telemetry systems.
What is the maximum Zener current IZM for the 1N4135?
The maximum Zener current IZM for the 1N4135 is 76.0 mA at 25 °C, calculated from its 500 mW power rating and 100 V Zener voltage (IZM = PM(AV)/VZ). This value is listed in the Electrical Characteristics table on page 3 of the T4-LDS-0245-2 datasheet.
Does the 1N4135 have RoHS-compliant variants?
Yes - RoHS-compliant versions of the 1N4135 are available with the "e3" suffix (e.g., 1N4135-1e3), but only for commercial-grade parts. JANTX, JANTXV, and JANS versions remain non-RoHS compliant due to tin-lead plating requirements for military screening standards.
How is polarity marked on the 1N4135?
The 1N4135 uses a cathode band to indicate polarity: the banded end is the cathode and must be held at a more positive potential than the anode to achieve Zener regulation. This marking is consistent across all DO-35 packaged devices in the 1N4099–1N4135 series per the Mechanical and Packaging section of the datasheet.
1N4135 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- *
- Package/Case:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- -
- Tolerance:
- -
- Power - Max:
- -
- Impedance (Max) (Zzt):
- -
- Current - Reverse Leakage @ Vr:
- -
- Voltage - Forward (Vf) (Max) @ If:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
1N4135 FAQ
1.How can I place an order for 1N4135 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N4135 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 1N4135 reliable?
The price and inventory of 1N4135 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N4135 is usually 5 days.
3.What payment methods are accepted for 1N4135?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N4135 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N4135?
1N4135 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N4135 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 1N4135?
For technical support, including 1N4135 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N4135 requirements.
6.How does Aetrix verify that 1N4135 is sourced from the original manufacturer or authorized distributors?
All 1N4135 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 1N4135 meets industry standards.
7.What is the process for return or replacement of 1N4135?
All 1N4135 units undergo pre-shipment inspection (PSI). If there is an issue with 1N4135, 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 1N4135 part is unused and in its original packaging.
Return procedure for 1N4135:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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