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Microchip Technology 1N4117/TR
- Part No.:
- 1N4117/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AA, DO-7, Axial
- Datasheet:
-
1N4117/TR.pdf
- Description:
- DIODE ZENER 25V 500MW DO7
- Quantity:
- Payment:
- Shipping:
Inventory:7,509
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Product details
Overview
1N4117/TR from Microsemi is a 500 mW, 25 V Zener diode in DO-35 glass axial package, qualified to JANTXV level per MIL-PRF-19500/435, with ±5% voltage tolerance, 150 Ω dynamic impedance at 250 mA, and 0.01 µA reverse leakage at 19 V, used for precision voltage regulation in military-grade power supplies and reference circuits.
For engineers reviewing the 1N4117/TR datasheet, 1N4117/TR pinout, 1N4117/TR application, or 1N4117/TR equivalent, this page delivers verified Zener voltage, thermal derating behavior, noise density (1 µV/√Hz), junction temperature range (–65°C to +175°C), and RoHS-compliant commercial availability with TR tape-and-reel packaging.
Technical Context
This device operates as a two-terminal voltage regulator in reverse-biased breakdown mode, with metallurgical bonding ensuring stable Zener characteristics across temperature extremes. Its 25 V nominal Zener voltage is specified at 250 mA test current (IZT), and it exhibits a positive temperature coefficient of +0.090 %/°C - critical for thermal stability in high-reliability analog references.
The 1N4117/TR maintains low noise density (1 µV/√Hz) and minimal capacitance (typical <2 pF), enabling use in low-noise bandgap references and precision instrumentation. Its DO-35 package provides hermetic sealing and meets MIL-STD-750 solderability requirements, supporting operation up to 175 °C junction temperature with 250 °C/W junction-to-lead thermal resistance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 25.0 V at 250 mA - defines regulated output voltage under nominal bias |
| Power Dissipation | 500 mW at 25 °C - derates linearly to zero at 175 °C ambient on standard PCB |
| Dynamic Impedance (ZZT) | 150 Ω at 250 mA - determines regulation stiffness against load current variation |
| Reverse Leakage (IR) | 0.01 µA at 19 V - ensures minimal quiescent current in standby reference designs |
| Noise Density (ND) | 1 µV/√Hz - enables low-noise voltage references in sensitive analog signal chains |
| Temp. Coefficient (αVZ) | +0.090 %/°C - supports predictable drift compensation in wide-temperature systems |
| Junction Temp Range | –65 °C to +175 °C - qualifies for aerospace, downhole, and defense electronics |
Pinout & Package
DO-35 (DO-204AH) axial-leaded glass package with cathode indicated by color band; leads are tin-lead or RoHS-compliant matte-tin plated, solderable per MIL-STD-750 method 2026. 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; carries full regulator current |
| Cathode (banded end) | Zener breakdown terminal | Connected to higher-potential node; voltage referenced to anode; polarity critical for regulation |
Key Features
| Feature | Design Value |
|---|---|
| Metallurgically bonded construction | Ensures long-term Zener voltage stability and reduced parameter drift over life and temperature |
| MIL-PRF-19500/435 qualification (JANTXV) | Validated reliability for mission-critical applications including avionics and space-qualified subsystems |
| Low noise density (1 µV/√Hz) | Supports high-precision analog references where spectral purity impacts ADC accuracy or sensor excitation |
| Hermetically sealed glass package | Prevents moisture ingress and parametric shift in humid or corrosive environments |
| ESD immunity (MIL-STD-750 Method 1020) | Enables safe handling and assembly without special ESD controls in production environments |
Applications
| Aerospace Power Reference | Industrial Sensor Excitation |
|---|---|
Use Scenario: Stable 25 V reference in satellite DC-DC converter feedback loops requiring radiation-hardened components. IC Role / Device Role / Timing Role: Zener voltage reference providing regulation setpoint for error amplifier in isolated flyback controller. Use Value: JANS-qualified version available; +0.090 %/°C tempco allows predictable calibration over –55°C to +125°C operating range. | Use Scenario: Precision excitation source for 4–20 mA loop-powered pressure transducers in oilfield equipment. IC Role / Device Role / Timing Role: Two-terminal shunt regulator maintaining constant voltage across bridge sensor elements. Use Value: 0.01 µA leakage at 19 V minimizes error contribution; DO-35 axial leads simplify through-hole mounting on ruggedized PCBs. |
| Military Radio Bias Supply | Test & Measurement Calibration |
Use Scenario: Local bias rail generation for RF power amplifier stages in handheld tactical radios operating in extreme temperatures. IC Role / Device Role / Timing Role: Shunt regulator stabilizing collector supply for discrete transistor gain blocks. Use Value: –65°C to +175°C junction rating supports operation in unheated enclosures; metallurgical bond prevents parametric shift after thermal cycling. | Use Scenario: Fixed-voltage reference in portable multimeter front-end circuitry requiring traceable metrology-grade stability. IC Role / Device Role / Timing Role: Primary Zener reference in auto-zeroing op-amp offset correction path. Use Value: 1 µV/√Hz noise density avoids introducing measurable RMS error into microvolt-level measurements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4117US | Same electrical specs but in DO-213AA surface-mount package; no axial leads | Used where board space is constrained and reflow assembly is required | Select 1N4117US only when SMT placement and footprint compatibility are mandatory |
| 1N4117-1 | Identical DO-35 package and electrical parameters; differs only in part numbering suffix indicating JAN/JANTXV qualification level | Same use cases but requires formal military procurement documentation | Choose 1N4117-1 when compliance with MIL-PRF-19500/435 JANTXV screening is contractually required |
Compared with 1N4117/TR, the 1N4117US offers identical regulation performance in a smaller surface-mount form factor, while 1N4117-1 provides the same DO-35 mechanical interface with formal military screening documentation - neither is pin-compatible in the sense of direct substitution without verifying procurement and qualification requirements.
Availability
1N4117/TR is available at Aetrix Electronics and suitable for aerospace power references, industrial sensor excitation, military radio bias supplies, and test & measurement calibration requiring stable component supply with traceable sourcing and long-term lifecycle support.
Supply support for 1N4117/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 and mixed-signal ICs, radiation-hardened devices, and precision timing solutions.
The 1N4117/TR belongs to Microsemi's legacy MIL-qualified Zener diode product line, designed specifically for voltage regulation in defense, aerospace, and industrial systems demanding extended temperature operation and long-term parametric stability.
FAQ
What is the Zener voltage tolerance for 1N4117/TR?
The 1N4117/TR has a nominal Zener voltage of 25.0 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 the T4-LDS-0245-2 datasheet. This tolerance applies at 250 mA test current and 25 °C ambient temperature.
Is 1N4117/TR RoHS compliant?
Yes, the 1N4117/TR is RoHS compliant (e3 suffix), with annealed matte-tin plating on commercial-grade units. RoHS compliance is explicitly stated in the FEATURES section and PART NOMENCLATURE table of the datasheet, though JANTXV-qualified versions may follow different material specifications depending on screening level.
What is the maximum reverse leakage current for 1N4117/TR?
The maximum reverse leakage current (IR) for 1N4117/TR is 0.01 µA at 19 V, as specified in the Electrical Characteristics table on page 3. This value reflects worst-case leakage under rated conditions and supports low-power reference designs where standby current must be minimized.
Does 1N4117/TR require heatsinking in typical applications?
No, 1N4117/TR does not require external heatsinking in typical applications due to its 500 mW power rating and 250 °C/W junction-to-lead thermal resistance. When mounted with 3/8″ lead length from body on standard FR4 PCB, it safely dissipates full rated power at ambient temperatures up to 50 °C before linear derating begins.
What is the noise performance of 1N4117/TR?
The 1N4117/TR has a measured noise density of 1 µV/√Hz at 250 mA Zener test current, as documented in the Electrical Characteristics table and Figure 1 test circuit description. This low noise enables use in high-accuracy analog references where broadband noise would degrade system resolution.
1N4117/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):
- 25 V
- Tolerance:
- ±5%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 150 Ohms
- Current - Reverse Leakage @ Vr:
- 10 nA @ 19 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)
1N4117/TR FAQ
1.How can I place an order for 1N4117/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N4117/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 1N4117/TR reliable?
The price and inventory of 1N4117/TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N4117/TR is usually 5 days.
3.What payment methods are accepted for 1N4117/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N4117/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N4117/TR?
1N4117/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N4117/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 1N4117/TR?
For technical support, including 1N4117/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N4117/TR requirements.
6.How does Aetrix verify that 1N4117/TR is sourced from the original manufacturer or authorized distributors?
All 1N4117/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 1N4117/TR meets industry standards.
7.What is the process for return or replacement of 1N4117/TR?
All 1N4117/TR units undergo pre-shipment inspection (PSI). If there is an issue with 1N4117/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 1N4117/TR part is unused and in its original packaging.
Return procedure for 1N4117/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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