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Microchip Technology JANS1N4626-1/TR
- Part No.:
- JANS1N4626-1/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
JANS1N4626-1/TR.pdf
- Description:
- DIODE ZENER 5.6V 500MW DO204AH
- Quantity:
- Payment:
- Shipping:
Inventory:8,261
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Product details
Overview
JANS1N4626-1/TR from Microsemi is a 5.6 V, 500 mW metallurgically bonded glass Zener diode in DO-35 package, qualified to JANS level per MIL-PRF-19500/435, with ±1% voltage tolerance, 1400 Ω dynamic impedance at 250 mA test current, and max 4 µA reverse leakage at 4.0 V. It serves as a precision voltage reference in radiation-hardened military power regulation circuits.
For engineers reviewing the JANS1N4626-1/TR datasheet, JANS1N4626-1/TR pinout, JANS1N4626-1/TR application, or JANS1N4626-1/TR equivalent, key selection criteria include its JANS-level qualification, 5.6 V nominal Zener voltage with ±1% tolerance, 1400 Ω dynamic impedance, -0.020/+0.040 %/°C temperature coefficient, and DO-35 axial-leaded hermetic glass package for high-reliability analog signal conditioning.
Technical Context
This device operates in reverse breakdown mode with cathode-banded polarity, requiring the banded end to be held positive relative to the anode for regulation. Its metallurgical bond construction ensures stable Zener voltage under thermal cycling and radiation exposure.
The JANS1N4626-1/TR delivers 5.6 V regulation at IZT = 250 mA, exhibits 1400 Ω dynamic impedance (ZZT) at that current, and maintains ≤4 µA reverse leakage (IR) at VR = 4.0 V - enabling low-noise, high-stability reference performance across -65 °C to +175 °C junction temperature range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Zener Voltage | 5.6 V at 250 mA test current - defines precise regulation point for feedback loops |
| Zener Tolerance | ±1% - supports tight voltage margining in critical avionics power supplies |
| Dynamic Impedance | 1400 Ω at 250 mA - determines output voltage variation under load transients |
| Max Reverse Leakage | 4.0 µA at 4.0 V - ensures minimal error current in high-impedance reference paths |
| Temp Coefficient | -0.020/+0.040 %/°C - enables predictable drift compensation in wide-temperature systems |
| Power Dissipation | 500 mW at 25 °C - sets maximum continuous bias current before thermal derating begins |
| Junction Temp Range | -65 °C to +175 °C - qualifies for operation in space-grade and engine-mounted electronics |
Pinout & Package
DO-35 (DO-204AH) axial-leaded hermetically sealed glass package with tin-lead plating; cathode indicated by band on glass body; weight ≈ 0.2 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (unbanded end) | Reference ground node | Connected to system ground or common return; must remain negative relative to cathode during regulation |
| Cathode (banded end) | Regulated output node | Provides stable 5.6 V reference when reverse-biased; polarity critical for proper Zener operation |
Key Features
| Feature | Design Value |
|---|---|
| MIL-PRF-19500/435 JANS qualification | Meets highest reliability screening for space and strategic defense systems |
| Metallurgical bond construction | Eliminates interfacial delamination risk under thermal shock and radiation exposure |
| Hermetic glass DO-35 package | Prevents moisture ingress and long-term parameter drift in harsh environments |
| Low noise density | ≤4 µV/√Hz at 5.6 V - minimizes reference voltage ripple in precision ADC/DAC circuits |
| Radiation hardness | Inherently radiation-tolerant per Microsemi MicroNote 050 - no additional shielding required |
Applications
| Avionics Power Monitoring | Satellite Bus Voltage Regulation |
|---|---|
Use Scenario: Real-time monitoring of 28 V DC bus voltage in flight control computers using resistive divider into ADC input. IC Role / Device Role / Timing Role: Precision 5.6 V reference for ADC full-scale calibration and offset correction. Use Value: ±1% Zener tolerance and -65 °C to +175 °C operation ensure measurement accuracy across all flight envelopes without recalibration. | Use Scenario: Stabilizing reference for DC-DC converter feedback loop in LEO satellite power management unit. IC Role / Device Role / Timing Role: Zener-based shunt regulator providing stable 5.6 V setpoint to error amplifier. Use Value: Metallurgical bond and JANS qualification guarantee >100 krad(Si) TID immunity and zero parametric shift after launch vibration. |
| Nuclear Instrumentation | Tactical Radio RF Bias Supply |
Use Scenario: Biasing photomultiplier tube (PMT) dynode chain in radiation detection spectrometer. IC Role / Device Role / Timing Role: Low-noise 5.6 V reference establishing inter-stage voltage gradients. Use Value: ≤4 µV/√Hz noise density prevents signal-to-noise degradation in single-photon counting applications. | Use Scenario: Providing regulated gate bias to GaN RF power amplifier stages in manpack radios. IC Role / Device Role / Timing Role: Shunt Zener clamp protecting amplifier gate from overvoltage during transient events. Use Value: Hermetic DO-35 package withstands humidity and salt fog exposure while maintaining 5.6 V clamping threshold. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| JANTXV1N4626-1 | Same 5.6 V, ±1% spec, but qualified only to JANTXV level (not JANS); higher allowable failure rate | Lacks full JANS radiation hardness and extended temperature screening | Select when cost sensitivity outweighs mission-critical radiation tolerance requirements |
| 1N4626US-1 | Same electrical specs, but in surface-mount DO-213AA package; no axial leads | Requires PCB redesign for SMT assembly; unsuitable for through-hole prototyping or repair | Select when board space constraints mandate SMT and JANS qualification is not required |
Compared with JANTXV1N4626-1 and 1N4626US-1, the JANS1N4626-1/TR provides the only combination of ±1% Zener tolerance, JANS-level screening, and axial DO-35 packaging - making it irreplaceable for legacy-maintained, radiation-hardened, through-hole military platforms.
Availability
JANS1N4626-1/TR is available at Aetrix Electronics and suitable for avionics power monitoring, satellite bus voltage regulation, and nuclear instrumentation requiring stable component supply with guaranteed long-term obsolescence support.
Supply support for JANS1N4626-1/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) designs high-reliability analog and mixed-signal semiconductors for aerospace, defense, and industrial markets.
The 1N46xx-1 series was developed specifically to meet MIL-PRF-19500/435 requirements for radiation-hardened, hermetically sealed Zener references in mission-critical analog subsystems.
FAQ
What is the Zener voltage tolerance of JANS1N4626-1/TR?
JANS1N4626-1/TR has a nominal Zener voltage of 5.6 V with ±1% tolerance, verified per MIL-PRF-19500/435 screening at 250 mA test current. This tight tolerance is achieved via post-trim testing and applies across the full -65 °C to +175 °C operating junction temperature range. The JANS1N4626-1/TR datasheet specifies this value in Table 1 on page 3.
Is JANS1N4626-1/TR RoHS compliant?
No, JANS1N4626-1/TR is not RoHS compliant. Per the Microsemi T4-LDS-0245-2 datasheet, RoHS-compliant versions (suffix e3) are available only for commercial-grade parts; JANS-level devices use traditional tin-lead plating to ensure solderability and reliability under thermal cycling per MIL-STD-750 method 2026. The JANS1N4626-1/TR retains leaded terminations for legacy military compatibility.
What is the maximum reverse leakage current for JANS1N4626-1/TR?
The maximum reverse leakage current for JANS1N4626-1/TR is 4.0 µA at VR = 4.0 V, as specified in the Electrical Characteristics table on page 3 of the Microsemi datasheet. This parameter is measured at 25 °C ambient and reflects the device's ability to maintain regulation integrity under sub-breakdown bias conditions. The JANS1N4626-1/TR exhibits this low leakage due to its metallurgically bonded junction structure.
Does JANS1N4626-1/TR require heatsinking in standard operation?
No, JANS1N4626-1/TR does not require external heatsinking at ≤500 mW dissipation and lead temperature ≤50 °C. Its RθJL = 250 °C/W (measured at 3/8″ lead length) allows direct mounting on FR4 PCBs with standard copper pads. Derating begins linearly above 50 °C lead temperature, reaching zero power at 175 °C. The JANS1N4626-1/TR thermal profile is defined in Figure 2 of the datasheet.
How is polarity marked on JANS1N4626-1/TR?
JANS1N4626-1/TR uses a cathode band on the glass DO-35 body to indicate polarity: the banded end is the cathode and must be held positive relative to the unbanded (anode) end during Zener regulation. This marking complies with JEDEC standards and is visible under 10× magnification. The JANS1N4626-1/TR mechanical drawing on page 5 confirms band placement per DO-204AH specification.
JANS1N4626-1/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):
- 5.6 V
- Tolerance:
- ±5%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 1.4 Ohms
- Current - Reverse Leakage @ Vr:
- 1 µA @ 5.2 V
- Voltage - Forward (Vf) (Max) @ If:
- 1.1 V @ 200 mA
- Operating Temperature:
- -65°C ~ 175°C (TJ)
- Grade:
- Military
- Qualification:
- MIL-PRF-19500/435
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AH (DO-35)
JANS1N4626-1/TR FAQ
1.How can I place an order for JANS1N4626-1/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for JANS1N4626-1/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 JANS1N4626-1/TR reliable?
The price and inventory of JANS1N4626-1/TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for JANS1N4626-1/TR is usually 5 days.
3.What payment methods are accepted for JANS1N4626-1/TR?
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4.How is shipping managed for JANS1N4626-1/TR?
JANS1N4626-1/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JANS1N4626-1/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 JANS1N4626-1/TR?
For technical support, including JANS1N4626-1/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JANS1N4626-1/TR requirements.
6.How does Aetrix verify that JANS1N4626-1/TR is sourced from the original manufacturer or authorized distributors?
All JANS1N4626-1/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 JANS1N4626-1/TR meets industry standards.
7.What is the process for return or replacement of JANS1N4626-1/TR?
All JANS1N4626-1/TR units undergo pre-shipment inspection (PSI). If there is an issue with JANS1N4626-1/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 JANS1N4626-1/TR part is unused and in its original packaging.
Return procedure for JANS1N4626-1/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
JANS1N4626-1/TR Tags
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