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Microchip Technology 1N4100/TR
- Part No.:
- 1N4100/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AA, DO-7, Axial
- Datasheet:
-
1N4100/TR.pdf
- Description:
- DIODE ZENER 7.5V 500MW DO7
- Quantity:
- Payment:
- Shipping:
Inventory:8,244
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Product details
Overview
1N4100/TR from Microsemi is a 500 mW, 7.5 V Zener diode in DO-35 glass axial package, qualified to JANTX level per MIL-PRF-19500/435, with ±5% voltage tolerance, 200 Ω dynamic impedance at 250 mA test current, and 1.0 µA max reverse leakage at 5.7 V. It serves as a precision voltage reference in military-grade power supply regulation.
For engineers reviewing the 1N4100/TR datasheet, 1N4100/TR pinout, 1N4100/TR application, or 1N4100/TR equivalent, this part delivers stable low-noise regulation (1 µV/√Hz typical), high-reliability hermetic packaging, and verified thermal performance up to +175 °C junction temperature in harsh-environment analog circuits.
Technical Context
This Zener diode operates in reverse breakdown with cathode-banded polarity, relying on metallurgical bonding for low-noise, radiation-hardened performance. Its 250 mA Zener test current and 200 Ω dynamic impedance ensure predictable regulation across wide current ranges (1–40 mA).
Designed for high-reliability applications, it meets MIL-PRF-19500/435 requirements for JAN/JANTX levels and exhibits minimal capacitance (<2 pF at 7.5 V) and temperature coefficient of +0.065 %/°C - enabling stable reference behavior over -65 to +175 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 7.5 V @ 250 mA - precise regulation point for low-voltage reference designs |
| Power Dissipation | 500 mW @ 25 °C - supports continuous operation in compact through-hole layouts |
| Zener Impedance ZZT | 200 Ω @ 250 mA - ensures tight voltage stability under varying load currents |
| Reverse Leakage IR | 1.0 µA @ 5.7 V - enables low-power standby regulation without significant quiescent loss |
| Noise Density | 1 µV/√Hz - critical for low-noise analog references and precision instrumentation |
| Temp Coefficient αVZ | +0.065 %/°C - predictable drift behavior simplifies thermal compensation |
| Junction Temp Range | -65 to +175 °C - validated for aerospace, defense, and downhole electronics |
Pinout & Package
DO-35 (DO-204AH) glass axial-leaded package: hermetically sealed, tin-lead or RoHS-compliant matte-tin plating, cathode indicated by band. Weight ≈ 0.2 g; body diameter 1.42–2.29 mm, length 3.56–5.08 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential node during Zener operation; used for forward-bias protection checks |
| Cathode (banded end) | Zener regulation terminal | Connected to higher-potential node; reverse bias enables voltage clamping at 7.5 V |
Key Features
| Feature | Design Value |
|---|---|
| Metallurgically bonded junction | Enables radiation hardness and long-term parametric stability in mission-critical systems |
| MIL-PRF-19500/435 qualification (JANTX) | Guarantees screening, testing, and traceability for defense/aerospace BOMs |
| Low noise density (1 µV/√Hz) | Supports high-resolution ADC references and low-drift op-amp bias networks |
| Hermetic glass encapsulation | Prevents moisture ingress and parameter shift in humid or corrosive environments |
| Non-ESD-sensitive construction | Eliminates need for handling controls beyond standard MIL-STD-750 method 1020 |
Applications
| Avionics Power Monitoring | Military Radio Bias Supply |
|---|---|
Use Scenario: Regulating reference voltage for analog-to-digital converters monitoring 28 V aircraft bus voltage. IC Role / Device Role / Timing Role: Zener voltage reference providing stable 7.5 V input to precision comparator and ADC driver stages. Use Value: Maintains ±0.5% reference accuracy over -55 to +125 °C ambient, meeting DO-160E environmental compliance. | Use Scenario: Establishing bias point for RF power amplifier transistors in HF/VHF manpack radios. IC Role / Device Role / Timing Role: Low-noise Zener shunt regulator stabilizing collector supply rail against battery sag and ripple. Use Value: 1 µV/√Hz noise floor prevents AM sideband distortion; JANTX qualification ensures field reliability. |
| Satellite Payload Telemetry | Downhole Oilfield Sensor Module |
Use Scenario: Providing reference voltage for temperature-compensated pressure transducer signal conditioning in LEO satellites. IC Role / Device Role / Timing Role: Radiation-hardened Zener reference maintaining calibration integrity during orbital radiation exposure. Use Value: Inherent TID hardness (>100 krad(Si)) eliminates need for shielding or derating in unhardened PCB layouts. | Use Scenario: Stabilizing excitation voltage for piezoresistive strain gauges in high-temperature (175 °C) wellbore tools. IC Role / Device Role / Timing Role: High-temperature Zener regulator operating at full 175 °C junction limit with no parameter drift. Use Value: Validated operation at +175 °C enables direct mounting on sensor substrate without heatsinking. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4100US | Same electrical specs, but in DO-213AA surface-mount package (no leads) | Requires SMT reflow process; unsuitable for through-hole prototyping or high-vibration mechanical retention | Select when board space is constrained and automated assembly is available |
| 1N4734A | 7.5 V, 1 W rating, ±5% tolerance, DO-41 package; higher power but commercial-grade only | Lacks MIL-PRF-19500 qualification; not rated for >150 °C or radiation environments | Select for cost-sensitive industrial power supplies where military screening is unnecessary |
Compared with 1N4100/TR, 1N4100US offers identical regulation performance in a space-saving SMT form factor, while 1N4734A provides higher power headroom at the expense of reliability certification and temperature range - making 1N4100/TR the sole choice for JANTX-compliant, high-temp, low-noise reference needs.
Availability
1N4100/TR is available at Aetrix Electronics and suitable for avionics power monitoring, military radio bias supply, and satellite telemetry requiring stable component supply with full traceability and extended lifecycle support.
Supply support for 1N4100/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, radiation-hardened, and aerospace-grade components.
The 1N4099–1N4135 series was designed specifically for military and space applications requiring MIL-PRF-19500-qualified Zener regulation with hermetic sealing, low noise, and extreme temperature resilience.
FAQ
What is the Zener voltage tolerance for 1N4100/TR?
The 1N4100/TR has a nominal Zener voltage of 7.5 V with a standard tolerance of ±5%, as defined in the JEDEC-registered specification and confirmed in the Electrical Characteristics table on page 3 of T4-LDS-0245-2. This tolerance applies under standard test conditions of 25 °C and 250 mA Zener test current.
Is 1N4100/TR suitable for surface-mount assembly?
No - the 1N4100/TR is packaged in the axial-leaded DO-35 (DO-204AH) glass case and is intended for through-hole mounting. For surface-mount equivalents, Microsemi offers the 1N4100US in DO-213AA package; the "TR" suffix denotes tape-and-reel packaging for the through-hole version only.
What is the maximum junction temperature rating for 1N4100/TR?
The 1N4100/TR is rated for a junction and storage temperature range of -65 to +175 °C, as specified in the Maximum Ratings table on page 1 of T4-LDS-0245-2. This rating is validated across all qualified reliability levels (JAN, JANTX, JANTXV, JANS) and supports operation in extreme environmental conditions.
Does 1N4100/TR meet RoHS requirements?
Yes - the "e3" suffix indicates RoHS compliance, and 1N4100/TR is available in RoHS-compliant versions with annealed matte-tin plating. However, RoHS compliance is limited to commercial-grade units; JANTX and higher reliability levels use traditional tin-lead plating per MIL-STD-750.
How is polarity marked on the 1N4100/TR package?
The cathode of the 1N4100/TR is identified by a distinct color band on the glass body - the banded end must be held at a higher potential than the anode to achieve Zener regulation. This marking follows JEDEC DO-35 conventions and is verified in the Mechanical and Packaging section on page 2 of T4-LDS-0245-2.
1N4100/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):
- 7.5 V
- Tolerance:
- ±5%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 200 Ohms
- Current - Reverse Leakage @ Vr:
- 10 µA @ 5.7 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)
1N4100/TR FAQ
1.How can I place an order for 1N4100/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N4100/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 1N4100/TR reliable?
The price and inventory of 1N4100/TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N4100/TR is usually 5 days.
3.What payment methods are accepted for 1N4100/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N4100/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N4100/TR?
1N4100/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N4100/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 1N4100/TR?
For technical support, including 1N4100/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N4100/TR requirements.
6.How does Aetrix verify that 1N4100/TR is sourced from the original manufacturer or authorized distributors?
All 1N4100/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 1N4100/TR meets industry standards.
7.What is the process for return or replacement of 1N4100/TR?
All 1N4100/TR units undergo pre-shipment inspection (PSI). If there is an issue with 1N4100/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 1N4100/TR part is unused and in its original packaging.
Return procedure for 1N4100/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N4100/TR Tags
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