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Microchip Technology 1N4135/TR
- Part No.:
- 1N4135/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AA, DO-7, Axial
- Datasheet:
-
1N4135/TR.pdf
- Description:
- DIODE ZENER 100V 500MW DO7
- Quantity:
- Payment:
- Shipping:
Inventory:9,633
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Product details
Overview
1N4135/TR from Microsemi is a 100 V, 500 mW axial-leaded glass Zener diode in DO-35 (DO-204AH) package, qualified to JANS level per MIL-PRF-19500/435, with ±5% voltage tolerance, 1600 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 1N4135/TR datasheet, 1N4135/TR pinout, 1N4135/TR application, or 1N4135/TR equivalent, this page delivers verified Zener voltage, thermal derating behavior, MIL-spec qualification level, noise performance, and RoHS-compliant packaging options - all critical for aerospace, defense, and industrial analog reference design.
Technical Context
This device operates as a precision voltage reference in reverse-biased breakdown mode, with Zener voltage specified at 250 mA test current (IZT) and characterized over –65 °C to +175 °C junction temperature range. Its metallurgically bonded construction ensures stable regulation under thermal cycling and radiation exposure.
Thermal resistance is 250 °C/W junction-to-lead (at 10 mm lead length) and 300 °C/W junction-to-ambient on FR4 board; power dissipation linearly derates from 500 mW at 25 °C ambient to zero at 175 °C. Reverse leakage is ≤0.01 µA at VR = 80 V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 100 V ±5% at IZT = 250 mA - defines stable regulation point for high-voltage reference designs |
| Power Dissipation | 500 mW at TC = 25 °C - supports continuous operation in compact axial-leaded layouts with defined thermal derating |
| Dynamic Impedance ZZT | 1600 Ω at IZT = 250 mA - indicates voltage stability under load variation; lower than 1N4134-1 (1200 Ω) |
| Max Noise Density ND | 1 µV/√Hz - enables low-noise analog references, especially below 6.8 V where noise falls sharply |
| Temp Coefficient αVZ | +0.100 %/°C - positive drift improves predictability in high-temp environments vs. lower-voltage Zeners |
| Reverse Leakage IR | ≤0.01 µA at VR = 80 V - ensures minimal quiescent current in standby or high-impedance bias networks |
| Junction Temp Range | –65 °C to +175 °C - validated for extended-range military and space-grade applications |
Pinout & Package
DO-35 (DO-204AH) hermetically sealed axial-leaded glass package; cathode indicated by band; banded end is anode when used as Zener regulator (cathode connected to higher potential).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (banded end) | Reference ground node | Connected to system ground or lower-potential rail; polarity must be observed to avoid forward conduction |
| Cathode (unbanded end) | Regulated output node | Delivers stable 100 V reference when reverse-biased; requires series current-limiting resistor |
Key Features
| Feature | Design Value |
|---|---|
| MIL-PRF-19500/435 qualification | JANS-level reliability certified for mission-critical aerospace and defense systems |
| Metallurgical bond construction | Eliminates interfacial delamination risk under thermal shock and vibration stress |
| Low capacitance | Typical <1.5 pF (per Figure 3) - preserves high-frequency signal integrity in RF bias networks |
| Radiation hardness | Inherently radiation-tolerant per Microsemi MicroNote 050 - suitable for low-dose space applications |
| ESD immunity | Non-sensitive per MIL-STD-750 Method 1020 - withstands handling without protection circuitry |
Applications
| High-Voltage Power Supply Reference | Aerospace Sensor Biasing |
|---|---|
Use Scenario: Stabilizing 100 V rail in satellite power conditioning units where input varies ±15%. IC Role / Device Role / Timing Role: Zener regulator providing fixed reference for error amplifiers and feedback dividers. Use Value: Maintains ±0.5% output accuracy over –55 °C to +125 °C due to JANS-qualified thermal stability. | Use Scenario: Biasing piezoresistive pressure transducers in flight control systems requiring ultra-stable excitation. IC Role / Device Role / Timing Role: Precision voltage source for ratiometric sensor excitation, minimizing gain drift. Use Value: 1 µV/√Hz noise floor prevents signal corruption in microvolt-level bridge outputs. |
| Nuclear Instrumentation Calibration | Defense Radar Modulator Reference |
Use Scenario: Generating traceable 100 V reference in portable radiation survey meters calibrated to NIST standards. IC Role / Device Role / Timing Role: Primary voltage standard in handheld metrology equipment with battery-powered operation. Use Value: Hermetic DO-35 package ensures long-term calibration retention without humidity-induced drift. | Use Scenario: Setting gate drive thresholds in GaN-based radar pulse modulators operating at 100 V DC bus. IC Role / Device Role / Timing Role: Overvoltage clamp and reference for fast-switching protection logic. Use Value: 175 °C max junction temperature allows direct mounting near high-power RF stages. |
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; DO-213AA surface-mount package instead of DO-35 axial | Required for automated SMT assembly; lacks axial mounting flexibility | Select when PCB space constraints or reflow-only processes prohibit through-hole placement |
| 1N4135-1 | Identical specs and DO-35 package; differs only in packaging suffix (no "TR" tape-and-reel) | Not supplied in EIA-296 tape-and-reel; unsuitable for high-speed pick-and-place | Choose 1N4135/TR when volume production demands standardized reel delivery and automated placement |
Compared with 1N4135UR-1 and 1N4135-1, the 1N4135/TR offers identical Zener regulation performance but adds EIA-296 tape-and-reel packaging for automated manufacturing - enabling consistent feed reliability and eliminating manual handling in high-mix defense electronics lines.
Availability
1N4135/TR is available at Aetrix Electronics and suitable for high-reliability power supply reference, aerospace sensor biasing, and nuclear instrumentation calibration requiring stable component supply across extended temperature and radiation environments.
Supply support for 1N4135/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) is a U.S.-based semiconductor company specializing in high-reliability analog, RF, and radiation-hardened components for defense, aerospace, and industrial markets.
The 1N4135/TR belongs to Microsemi's legacy MIL-qualified Zener diode product line, engineered specifically for voltage reference stability under extreme thermal, mechanical, and radiation stress in mission-critical systems.
FAQ
What is the Zener voltage tolerance for 1N4135/TR?
The 1N4135/TR 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 TC = 25 °C, and is maintained across the full MIL-qualified temperature range when operated within rated power limits.
Is 1N4135/TR RoHS compliant?
Yes, the 1N4135/TR is RoHS compliant (designated by the "e3" suffix in full part numbering), but RoHS compliance applies only to commercial-grade versions. JANTXV and JANS variants retain tin-lead plating per MIL-STD-750 and are not RoHS compliant.
What is the maximum reverse leakage current for 1N4135/TR?
The maximum reverse leakage current (IR) for 1N4135/TR is 0.01 µA at VR = 80 V, measured at 25 °C. This ultra-low leakage supports high-impedance bias networks and minimizes power loss in battery-operated reference circuits.
Does 1N4135/TR require derating above 25 °C ambient?
Yes, 1N4135/TR power dissipation must be linearly derated starting at 25 °C ambient temperature, decreasing from 500 mW to zero at 175 °C. Derating follows a slope of approximately 3.57 mW/°C, per the published power derating curve in T4-LDS-0245-2.
What does the "TR" suffix indicate in 1N4135/TR?
The "TR" suffix in 1N4135/TR denotes EIA-296 standard tape-and-reel packaging, enabling automated surface-mount assembly. The underlying device remains electrically and mechanically identical to 1N4135-1, with no specification changes introduced by the TR packaging format.
1N4135/TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- DO-204AA, DO-7, Axial
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 100 V
- Tolerance:
- ±5%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 1500 Ohms
- Current - Reverse Leakage @ Vr:
- 10 nA @ 76 V
- Voltage - Forward (Vf) (Max) @ If:
- 1.1 V @ 200 mA
- Operating Temperature:
- -65°C ~ 175°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-7 (DO-204AA)
1N4135/TR FAQ
1.How can I place an order for 1N4135/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N4135/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 1N4135/TR reliable?
The price and inventory of 1N4135/TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N4135/TR is usually 5 days.
3.What payment methods are accepted for 1N4135/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N4135/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N4135/TR?
1N4135/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N4135/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 1N4135/TR?
For technical support, including 1N4135/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N4135/TR requirements.
6.How does Aetrix verify that 1N4135/TR is sourced from the original manufacturer or authorized distributors?
All 1N4135/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 1N4135/TR meets industry standards.
7.What is the process for return or replacement of 1N4135/TR?
All 1N4135/TR units undergo pre-shipment inspection (PSI). If there is an issue with 1N4135/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 1N4135/TR part is unused and in its original packaging.
Return procedure for 1N4135/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N4135/TR Tags
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