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Microchip Technology JANS1N4614-1/TR
- Part No.:
- JANS1N4614-1/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
JANS1N4614-1/TR.pdf
- Description:
- DIODE ZENER 1.8V 500MW DO204AH
- Quantity:
- Payment:
- Shipping:
Inventory:8,171
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Product details
Overview
JANS1N4614-1/TR from Microsemi is a 1.8 V, ±5% tolerance, 500 mW 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 aerospace and defense applications. It delivers stable voltage regulation at 250 mA test current with 1200 Ω dynamic impedance and -0.075 %/°C temperature coefficient.
For engineers reviewing the JANS1N4614-1/TR datasheet, JANS1N4614-1/TR pinout, JANS1N4614-1/TR application, or JANS1N4614-1/TR equivalent, key selection criteria include its JANS-level radiation hardness, low noise density (1 µV/√Hz), hermetic glass packaging, and operation across -65 °C to +175 °C junction temperature range.
Technical Context
This device operates as a precision shunt voltage regulator in reverse-biased breakdown mode, with cathode band indicating polarity and requiring banded end to be positive relative to anode for regulation. Its metallurgical bond ensures mechanical stability under thermal cycling and shock, critical for space-grade deployments.
The 1.8 V nominal Zener voltage is specified at IZT = 250 mA with ZZT ≤ 1200 Ω and αVZ = -0.075 %/°C - a negative coefficient typical of low-voltage Zeners. Maximum reverse leakage IR is 3.5 µA at VR = 1.0 V, and noise density is rated at 1 µV/√Hz, verified per Figure 1 test circuit using 1–3 kHz bandpass filtering.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 1.8 V at 250 mA - defines precise regulation point for low-voltage reference circuits |
| Power Rating PM(AV) | 0.5 W at 25 °C - supports continuous regulation in compact, unheatsinked layouts |
| Dynamic Impedance ZZT | ≤1200 Ω - limits output voltage variation under load current changes |
| Temp Coefficient αVZ | -0.075 %/°C - enables predictable drift compensation in wide-temperature environments |
| Noise Density ND | 1 µV/√Hz - ensures minimal added noise in precision analog references and sensor biasing |
| Max Reverse Leakage IR | 3.5 µA @ 1.0 V - guarantees low standby power loss in always-on regulation paths |
| Junction Temp Range | -65 °C to +175 °C - validated for extreme-environment operation without derating penalties |
Pinout & Package
DO-35 (DO-204AH) axial-leaded hermetically sealed glass package with tin-lead or RoHS-compliant matte-tin plating; cathode identified by single black band; weight ≈ 0.2 g; lead length 25.4–38.1 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (unbanded end) | Reference ground node | Connected to system ground or lowest potential point in shunt regulation topology |
| Cathode (banded end) | Regulated output node | Provides stable 1.8 V output when reverse-biased; must be held positive relative to anode |
Key Features
| Feature | Design Value |
|---|---|
| JANS qualification per MIL-PRF-19500/435 | Validated for Class S (space) applications with full lot traceability and screening including burn-in, thermal shock, and radiation testing |
| Metallurgical bond construction | Eliminates interfacial delamination risk under mechanical stress, ensuring long-term reliability in launch-vibration environments |
| Hermetic glass DO-35 package | Prevents moisture ingress and corrosion, enabling >20-year shelf life and operational integrity in humid or sealed enclosures |
| Radiation hardness | Inherently tolerant to total ionizing dose (TID) up to 100 krad(Si), per Microsemi MicroNote 050, without derating |
| Low capacitance | Typical <2 pF (per Figure 3) - preserves high-frequency signal integrity in RF bias and clock conditioning circuits |
Applications
| Spacecraft Power Monitoring | Military Avionics Reference |
|---|---|
Use Scenario: Regulating reference voltage for ADCs monitoring solar array bus voltage in LEO satellites. IC Role / Device Role / Timing Role: Shunt voltage reference providing stable 1.8 V for 16-bit SAR ADC biasing and calibration. Use Value: JANS qualification and -65 °C to +175 °C operation ensure accuracy across orbital thermal cycles without recalibration. |
Use Scenario: Supplying precision bias to op-amps in radar receiver front-end gain control loops. IC Role / Device Role / Timing Role: Low-noise Zener reference stabilizing transimpedance amplifier offset in pulse-Doppler systems. Use Value: 1 µV/√Hz noise density prevents SNR degradation in sub-microwatt signal chains. |
| Nuclear Instrumentation | Tactical Radios |
Use Scenario: Setting threshold voltage for Geiger-Müller tube pulse discrimination in radiation survey meters. IC Role / Device Role / Timing Role: Stable shunt regulator defining comparator trip point in high-impedance detector interface. Use Value: Radiation hardness allows uninterrupted operation in high-dose-rate field environments without parameter shift. |
Use Scenario: Providing regulated bias to RF power amplifier stages in manpack HF/VHF radios. IC Role / Device Role / Timing Role: Low-capacitance (≈1.8 pF) Zener maintaining RF isolation while delivering clean 1.8 V bias. Use Value: Minimal parasitic capacitance avoids detuning of matching networks near 30–512 MHz bands. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| JANTXV1N4614-1 | Same electrical specs but qualified only to JANTXV level (not JANS); no radiation hardness validation | Lacks full space qualification; suitable for ground-based military systems with lower TID requirements | Select when full JANS screening is not mandated and cost reduction is prioritized |
| 1N4614US-1 | Same Zener voltage and DO-35 package but commercial-grade (non-mil-qualified); RoHS compliant (e3 suffix) | No MIL-PRF-19500 screening; limited temp range (-65 °C to +150 °C); not radiation hardened | Use only in non-safety-critical, terrestrial industrial designs where qualification overhead is unnecessary |
Compared with JANS1N4614-1/TR, JANTXV1N4614-1 offers identical regulation performance but omits radiation testing and extended temperature validation, while 1N4614US-1 sacrifices all military screening for RoHS compliance and lower cost - making JANS1N4614-1/TR the sole choice for flight-critical voltage references.
Availability
JANS1N4614-1/TR is available at Aetrix Electronics and suitable for spacecraft power monitoring, military avionics reference, and nuclear instrumentation requiring stable component supply with full traceability and long-lifecycle support.
Supply support for JANS1N4614-1/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 analog and mixed-signal components for aerospace, defense, and industrial markets.
The 1N4614-1 series belongs to Microsemi's legacy mil-qualified Zener diode product line, engineered specifically for precision voltage regulation in radiation-exposed, thermally extreme, and mission-critical systems.
FAQ
What is the Zener voltage tolerance for JANS1N4614-1/TR?
JANS1N4614-1/TR has a nominal Zener voltage of 1.8 V with ±5% tolerance, consistent with the standard JEDEC specification for the 1N4614-1 family. This tolerance is measured at 250 mA test current under thermal equilibrium at 25 °C ambient, as defined in the T4-LDS-0245-2 datasheet.
Is JANS1N4614-1/TR compatible with lead-free soldering processes?
JANS1N4614-1/TR supports lead-free assembly with a maximum solder temperature of 260 °C for 10 seconds, per MIL-STD-750 Method 2026. Its terminations are plated with annealed matte-tin (RoHS-compliant on commercial variants), and the DO-35 glass package withstands thermal shock during reflow.
Does JANS1N4614-1/TR require heatsinking in normal operation?
No heatsink is required for JANS1N4614-1/TR at ambient temperatures ≤50 °C, as its 500 mW power rating is fully usable within that range. Above 50 °C, linear derating applies - dropping to zero at 175 °C - based on thermal resistance RθJA = 300 °C/W on FR4 board with 4 mm² copper pads.
What does the "TR" suffix indicate in JANS1N4614-1/TR?
The "TR" suffix in JANS1N4614-1/TR denotes tape-and-reel packaging per EIA-296 standard, enabling automated pick-and-place assembly. This format is standard for volume orders and does not affect electrical or reliability specifications of the JANS1N4614-1/TR device itself.
How is the polarity marked on JANS1N4614-1/TR?
JANS1N4614-1/TR uses a single black band on the glass body to identify the cathode terminal. For proper Zener regulation, the banded (cathode) end must be held positive relative to the unbanded (anode) end - reverse-biasing the junction to enter breakdown conduction.
JANS1N4614-1/TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- DO-204AH, DO-35, Axial
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 1.8 V
- Tolerance:
- ±5%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 1200 Ohms
- Current - Reverse Leakage @ Vr:
- 3.5 µA @ 1 V
- Voltage - Forward (Vf) (Max) @ If:
- 1.1 V @ 200 mA
- Operating Temperature:
- -65°C ~ 175°C
- Grade:
- Military
- Qualification:
- MIL-PRF-19500/435
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AH (DO-35)
JANS1N4614-1/TR FAQ
1.How can I place an order for JANS1N4614-1/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for JANS1N4614-1/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 JANS1N4614-1/TR reliable?
The price and inventory of JANS1N4614-1/TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for JANS1N4614-1/TR is usually 5 days.
3.What payment methods are accepted for JANS1N4614-1/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for JANS1N4614-1/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for JANS1N4614-1/TR?
JANS1N4614-1/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JANS1N4614-1/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 JANS1N4614-1/TR?
For technical support, including JANS1N4614-1/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JANS1N4614-1/TR requirements.
6.How does Aetrix verify that JANS1N4614-1/TR is sourced from the original manufacturer or authorized distributors?
All JANS1N4614-1/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 JANS1N4614-1/TR meets industry standards.
7.What is the process for return or replacement of JANS1N4614-1/TR?
All JANS1N4614-1/TR units undergo pre-shipment inspection (PSI). If there is an issue with JANS1N4614-1/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 JANS1N4614-1/TR part is unused and in its original packaging.
Return procedure for JANS1N4614-1/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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