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Microchip Technology 1N4615-1/TR
- Part No.:
- 1N4615-1/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AA, DO-7, Axial
- Datasheet:
-
1N4615-1/TR.pdf
- Description:
- DIODE ZENER 2V 500MW DO7
- Quantity:
- Payment:
- Shipping:
Inventory:4,419
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Product details
Overview
1N4615-1/TR from Microsemi is a 2.0 V, 500 mW axial-leaded glass Zener diode in DO-35 (DO-204AH) package, qualified to JANTXV level per MIL-PRF-19500/435, with 250 mA Zener test current, 1250 Ω dynamic impedance, and ±2% voltage tolerance. It delivers stable voltage regulation in precision reference and low-power bias circuits across military, aerospace, and industrial control systems.
For engineers reviewing the 1N4615-1/TR datasheet, 1N4615-1/TR pinout, 1N4615-1/TR application, or 1N4615-1/TR equivalent, this page provides verified electrical parameters, thermal derating behavior, noise density (1 µV/√Hz), temperature coefficient (–0.075 %/°C), and RoHS-compliant commercial-grade availability with TR tape-and-reel packaging.
Technical Context
The 1N4615-1/TR operates as a two-terminal voltage reference diode with metallurgically bonded construction for enhanced reliability and low noise. Its Zener breakdown mechanism is optimized for stable regulation at 2.0 V with minimal temperature drift and low capacitance (typical <2 pF).
It exhibits a negative temperature coefficient of –0.075 %/°C, ensuring predictable voltage shift over –65 °C to +175 °C junction range. Thermal resistance is 250 °C/W junction-to-lead (at 10 mm lead length), supporting operation up to 500 mW at 25 °C ambient before linear derating begins at 50 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 2.0 V @ 250 mA - precise reference point for low-voltage biasing and calibration circuits |
| Power Dissipation | 500 mW @ TL = 25 °C - supports continuous operation in compact through-hole designs with adequate heatsinking |
| Zener Impedance ZZT | 1250 Ω @ 250 mA - indicates moderate regulation stiffness suitable for non-critical analog references |
| Noise Density | 1 µV/√Hz - ultra-low broadband noise enabling use in high-fidelity sensor excitation and metrology references |
| Temp. Coefficient αVZ | –0.075 %/°C - predictable negative drift simplifies compensation in wide-temperature-range instrumentation |
| Reverse Leakage IR | 2.5 µA @ 1.0 V - ensures minimal standby current in battery-powered voltage monitor circuits |
| Junction Temp. Range | –65 °C to +175 °C - validated for extreme-environment deployment including avionics and downhole electronics |
Pinout & Package
DO-35 (DO-204AH) hermetically sealed axial-leaded glass package with cathode band marking; leads are tin-lead or RoHS-compliant matte-tin plated, solderable per MIL-STD-750 method 2026.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential node during Zener operation; used for forward-bias testing and ESD robustness verification |
| Cathode (banded end) | Zener regulation terminal | Must be held positive relative to anode to activate breakdown; polarity marking critical for correct PCB orientation |
Key Features
| Feature | Design Value |
|---|---|
| MIL-PRF-19500/435 qualification | JANTXV-level screening ensures tested reliability for mission-critical defense and space applications |
| Metallurgical bond construction | Eliminates interfacial delamination risk under thermal cycling, extending lifetime in harsh environments |
| Low noise density | 1 µV/√Hz enables use in precision analog front-ends where reference noise directly impacts ADC SNR |
| Hermetic glass sealing | Prevents moisture ingress and parameter drift over decades, satisfying long-lifecycle system requirements |
| RoHS-compliant option | e3 suffix version available for commercial designs requiring environmental compliance without performance trade-off |
Applications
| Avionics Power Monitoring | Industrial Sensor Excitation |
|---|---|
Use Scenario: Monitoring regulated 28 V DC bus voltage in aircraft subsystems using resistive divider + comparator. IC Role / Device Role / Timing Role: Precision 2.0 V reference for comparator threshold setting and ADC calibration. Use Value: Stable –0.075 %/°C drift ensures consistent trip points across –55 °C to +125 °C operating envelope. |
Use Scenario: Providing excitation voltage to strain-gauge bridges in factory-floor load cells. IC Role / Device Role / Timing Role: Low-noise 2.0 V bias source minimizing measurement uncertainty in microvolt-level bridge outputs. Use Value: 1 µV/√Hz noise density preserves >100 dB dynamic range in 24-bit sigma-delta measurements. |
| Downhole Oilfield Electronics | Military Radio Bias Networks |
Use Scenario: Voltage reference in high-temperature (175 °C) pressure transducer signal conditioning modules. IC Role / Device Role / Timing Role: Regulator maintaining stable 2.0 V supply for op-amp biasing under extreme thermal stress. Use Value: JANS-qualified construction and –65 °C to +175 °C rating enable uninterrupted operation in borehole tools. |
Use Scenario: Setting bias points in RF power amplifier stages of tactical HF/VHF radios. IC Role / Device Role / Timing Role: Zener clamp protecting base-emitter junctions from transient overvoltage during antenna switching. Use Value: 500 mW power rating and metallurgical bond withstand repeated surge events without parameter shift. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4615US-1 | Same 2.0 V Zener voltage and DO-35 package, but surface-mount DO-213AA variant | Requires SMT reflow process; no axial-lead hand-soldering or through-hole mounting | Select when board space constraints mandate surface-mount layout and automated assembly is available |
| 1N4728A | 3.3 V nominal Zener voltage, 1 W power rating, DO-41 package, ±5% tolerance | Higher voltage and power; not interchangeable without circuit redesign | Choose only if 3.3 V reference is required and higher dissipation capability is needed for legacy designs |
Compared with 1N4615-1/TR, the 1N4615US-1 offers identical regulation performance in SMT form, while the 1N4728A provides higher voltage and power but lacks military qualification and low-noise performance-making it unsuitable for precision or high-reliability use cases.
Availability
1N4615-1/TR is available at Aetrix Electronics and suitable for avionics power monitoring, industrial sensor excitation, and downhole oilfield electronics requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for 1N4615-1/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 mil-spec discrete components and analog ICs.
The 1N4615-1/TR belongs to Microsemi's legacy 1N46xx-1 Zener diode family, engineered specifically for precision voltage reference and regulation in defense, aerospace, and industrial systems demanding extended temperature operation and long-term stability.
FAQ
What is the Zener voltage tolerance for 1N4615-1/TR?
The 1N4615-1/TR has a nominal Zener voltage of 2.0 V with ±2% tolerance, indicated by the "C" suffix in its full nomenclature (1N4615-1C). This tighter tolerance enables accurate voltage setting in calibration circuits where standard ±5% devices would introduce unacceptable error.
Is 1N4615-1/TR RoHS compliant?
Yes, the 1N4615-1/TR is RoHS compliant when ordered with the "e3" suffix (e.g., 1N4615-1/TR e3), which denotes annealed matte-tin plating. RoHS compliance applies only to commercial-grade versions; military-qualified variants (JAN/JANTXV) retain tin-lead plating per specification.
What does the "TR" suffix mean in 1N4615-1/TR?
The "TR" suffix in 1N4615-1/TR indicates tape-and-reel packaging per EIA-296 standard, enabling automated pick-and-place assembly. The device remains functionally identical to the bulk version, with no electrical or reliability differences introduced by the packaging format.
Can 1N4615-1/TR replace 1N4614-1 in existing designs?
1N4615-1/TR (2.0 V) and 1N4614-1 (1.8 V) differ in nominal Zener voltage and cannot be substituted without verifying circuit margin. Their electrical characteristics-including dynamic impedance (1250 Ω vs. 1200 Ω) and noise density (1 µV/√Hz)-are closely matched, but voltage mismatch may affect regulation accuracy.
What is the maximum Zener current for 1N4615-1/TR at 25 °C?
The maximum Zener current (IZM) for 1N4615-1/TR is 110.0 mA at 25 °C, calculated from its 500 mW power rating and 2.0 V Zener voltage (P = V × I). Exceeding this current risks thermal runaway unless derated per the published curve starting at 50 °C lead temperature.
1N4615-1/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):
- 2 V
- Tolerance:
- ±5%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 1250 Ohms
- Current - Reverse Leakage @ Vr:
- 2.5 µA @ 1 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
1N4615-1/TR FAQ
1.How can I place an order for 1N4615-1/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N4615-1/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 1N4615-1/TR reliable?
The price and inventory of 1N4615-1/TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N4615-1/TR is usually 5 days.
3.What payment methods are accepted for 1N4615-1/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N4615-1/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N4615-1/TR?
1N4615-1/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N4615-1/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 1N4615-1/TR?
For technical support, including 1N4615-1/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N4615-1/TR requirements.
6.How does Aetrix verify that 1N4615-1/TR is sourced from the original manufacturer or authorized distributors?
All 1N4615-1/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 1N4615-1/TR meets industry standards.
7.What is the process for return or replacement of 1N4615-1/TR?
All 1N4615-1/TR units undergo pre-shipment inspection (PSI). If there is an issue with 1N4615-1/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 1N4615-1/TR part is unused and in its original packaging.
Return procedure for 1N4615-1/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N4615-1/TR Tags
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