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Microchip Technology JAN1N4625D-1
- Part No.:
- JAN1N4625D-1
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
JAN1N4625D-1.pdf
- Description:
- DIODE ZENER 5.1V 500MW DO204AH
- Quantity:
- Payment:
- Shipping:
Inventory:8,578
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Product details
Overview
JAN1N4625D-1 from Microsemi is a 500 mW, 5.1 V metallurgically bonded glass Zener diode in DO-35 package, qualified to JAN level per MIL-PRF-19500/435, with 1% voltage tolerance, 1500 Ω dynamic impedance at 250 mA, and max noise density of 2 µV/√Hz. It regulates voltage across wide current and temperature ranges in high-reliability analog reference and power supply circuits.
For engineers reviewing the JAN1N4625D-1 datasheet, JAN1N4625D-1 pinout, JAN1N4625D-1 application, or JAN1N4625D-1 equivalent, key selection criteria include its 1% Zener tolerance, JANS-qualified reliability grade, low noise performance below 6.8 V, DO-35 axial-leaded hermetic packaging, and thermal derating behavior from 500 mW at 25 °C to zero at 175 °C.
Technical Context
This device operates as a precision voltage reference in reverse-biased breakdown mode, with Zener voltage specified at 5.1 V ±1% under 250 mA test current (IZT). Its metallurgical bond construction ensures stable regulation over -65 °C to +175 °C junction temperature range and inherent radiation hardness per MicroNote 050.
It exhibits a temperature coefficient of -0.045/+0.030 %/°C and maximum reverse leakage of 3.0 µA at 3.0 V (VR), supporting stable biasing in low-power analog signal chains and military-grade power supervision circuits where long-term parametric drift must be minimized.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 5.1 V ±1% at 250 mA - enables precise 5 V rail regulation with tight tolerance for reference-sensitive circuits. |
| Power Dissipation | 500 mW at 25 °C, linearly derated to zero at 175 °C - defines usable thermal envelope on standard FR4 PCBs. |
| Dynamic Impedance ZZT | 1500 Ω at 250 mA - determines output impedance in regulation region; impacts load regulation error under varying current. |
| Noise Density ND | 2 µV/√Hz at 250 mA - critical for low-noise analog references; lower than higher-voltage Zeners in same family. |
| Temp Coefficient αVZ | -0.045/+0.030 %/°C - quantifies voltage drift vs. temperature; supports stability analysis in wide-temp environments. |
| Reverse Leakage IR | 3.0 µA max at 3.0 V - sets minimum bias current requirement and affects quiescent power in high-impedance nodes. |
| Junction Temp Range | -65 °C to +175 °C - qualifies use in aerospace, downhole, and defense systems requiring extreme environmental resilience. |
Pinout & Package
DO-35 (DO-204AH) axial-leaded hermetically sealed glass package; cathode indicated by band; operated with banded end positive for Zener regulation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Reference ground node | Connected to circuit common; establishes return path for Zener current and defines regulation reference point. |
| Cathode | Zener output terminal | Banded end; supplies regulated 5.1 V when reverse biased; must be held at higher potential than anode. |
Key Features
| Feature | Design Value |
|---|---|
| MIL-PRF-19500/435 JAN qualification | Guarantees screening, testing, and traceability for defense/aerospace applications requiring assured reliability. |
| 1% Zener voltage tolerance | Reduces calibration overhead and improves system-level accuracy without external trimming components. |
| Metallurgical bond construction | Provides superior long-term parameter stability and resistance to thermal cycling-induced degradation. |
| Low 2 µV/√Hz noise density | Enables use in precision analog front-ends, sensor excitation, and ADC reference buffers where noise floor matters. |
| Hermetic DO-35 glass package | Ensures moisture and contaminant immunity over lifetime; supports operation in harsh, high-humidity environments. |
Applications
| Avionics Power Supervision | Satellite Sensor Biasing |
|---|---|
Use Scenario: Monitoring 5 V supply rails in flight control computers to detect undervoltage faults before critical failure. IC Role / Device Role / Timing Role: Zener diode providing stable 5.1 V reference for comparator input in discrete supervisory circuit. Use Value: 1% tolerance and -65 °C to +175 °C operation ensure reliable trip-point accuracy across full aircraft operational envelope. | Use Scenario: Supplying bias voltage to radiation-hardened photodiode arrays in Earth observation payloads. IC Role / Device Role / Timing Role: Precision voltage reference establishing fixed operating point for analog sensor signal conditioning. Use Value: Low 2 µV/√Hz noise density preserves signal-to-noise ratio in low-current, high-gain transimpedance stages. |
| Downhole Telemetry Reference | Tactical Radio Voltage Clamp |
Use Scenario: Stabilizing reference voltage for pressure/temperature sensor signal chains in oil/gas well logging tools. IC Role / Device Role / Timing Role: Zener regulator maintaining constant bias despite wide ambient temperature swings (up to 175 °C). Use Value: Inherent radiation hardness and 175 °C junction rating eliminate need for additional shielding or derating margin. | Use Scenario: Clamping transient overvoltage on 5 V I/O lines in handheld military radios exposed to ESD and lightning-induced surges. IC Role / Device Role / Timing Role: Fast-acting shunt protector limiting voltage excursion during fast-rising transients. Use Value: DO-35 axial leads allow direct placement near connectors; hermetic seal prevents corrosion in humid field conditions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4625US-1 | Same electrical specs but in DO-213AA surface-mount package; no axial leads. | Requires SMT assembly; unsuitable for through-hole prototyping or high-vibration mechanical mounting. | Select when board space is constrained and reflow capability exists; not drop-in compatible with JAN1N4625D-1 footprint. |
| JANTXV1N4625D-1 | Identical electrical and mechanical specs, but screened to JANTXV reliability level with extended testing. | Required for programs demanding higher screening depth (e.g., space-qualified subsystems) beyond JAN baseline. | Select when mission-critical reliability validation beyond JAN is mandated by program spec. |
Compared with JAN1N4625D-1, the 1N4625US-1 offers identical regulation performance in a compact SMT form factor but eliminates axial-lead mechanical robustness, while JANTXV1N4625D-1 delivers the same functionality with enhanced screening rigor-making it suitable for higher-tier aerospace applications without altering circuit design.
Availability
JAN1N4625D-1 is available at Aetrix Electronics and suitable for avionics power supervision, satellite sensor biasing, and downhole telemetry requiring stable component supply with guaranteed MIL-spec compliance and long-term obsolescence management.
Supply support for JAN1N4625D-1 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 semiconductors for aerospace, defense, and industrial markets, emphasizing radiation hardness, extended temperature operation, and MIL-spec qualification.
JAN1N4625D-1 belongs to Microsemi's legacy 1N46xx-1 Zener diode product line, engineered specifically for precision voltage regulation in mission-critical analog systems where parametric stability and environmental resilience are non-negotiable.
FAQ
What is the Zener voltage tolerance of JAN1N4625D-1?
JAN1N4625D-1 has a nominal Zener voltage of 5.1 V with ±1% tolerance, as indicated by the "D" suffix in its nomenclature per Microsemi's part numbering convention. This tight tolerance is verified at 250 mA test current and enables high-accuracy voltage referencing without post-manufacture trimming. The specification is guaranteed across the full -65 °C to +175 °C operating junction temperature range.
Is JAN1N4625D-1 RoHS compliant?
No, JAN1N4625D-1 is not RoHS compliant. Per Microsemi documentation, RoHS-compliant versions (e.g., with "e3" suffix) are available only for commercial-grade parts, not for JAN-qualified devices like JAN1N4625D-1. The JAN variant uses traditional tin-lead plating to meet MIL-STD-750 solderability requirements and maintain compatibility with legacy military assembly processes.
What is the maximum Zener current IZM for JAN1N4625D-1?
The maximum Zener current IZM for JAN1N4625D-1 is 70.0 mA, derived from its 500 mW power rating and 5.1 V nominal Zener voltage (P = V × I → I = 0.5 W / 5.1 V ≈ 98 mA), but limited by thermal constraints and dynamic impedance behavior. The datasheet specifies 70.0 mA as the absolute maximum dc current to ensure safe operation within the 250 mA test condition envelope and avoid thermal runaway at elevated temperatures.
How does the temperature coefficient of JAN1N4625D-1 affect its performance?
JAN1N4625D-1 has a temperature coefficient αVZ of -0.045/+0.030 %/°C, meaning its Zener voltage may decrease up to 0.045% or increase up to 0.030% per degree Celsius change from 25 °C. This low-magnitude, bidirectional drift supports stable regulation in wide-temperature applications such as downhole tools or avionics, where predictable, bounded voltage shift is preferable to large monotonic drift seen in higher-voltage Zeners.
Can JAN1N4625D-1 be used as a substitute for commercial 1N4625-1 in new designs?
JAN1N4625D-1 shares identical electrical specifications with commercial 1N4625-1 but adds JAN-level MIL-PRF-19500/435 qualification, including enhanced screening, lot traceability, and extended temperature validation. It is fully substitutable electrically and mechanically, but its use incurs higher cost and longer lead times-justified only when program requirements mandate military-grade reliability assurance rather than commercial-grade performance.
JAN1N4625D-1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- DO-204AH, DO-35, Axial
- Packaging:
- Bulk
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 5.1 V
- Tolerance:
- ±2%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 1500 Ohms
- Current - Reverse Leakage @ Vr:
- 5 µA @ 3 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)
JAN1N4625D-1 FAQ
1.How can I place an order for JAN1N4625D-1 through Aetrix?
Please submit a Request for Quotation (RFQ) for JAN1N4625D-1 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 JAN1N4625D-1 reliable?
The price and inventory of JAN1N4625D-1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for JAN1N4625D-1 is usually 5 days.
3.What payment methods are accepted for JAN1N4625D-1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for JAN1N4625D-1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for JAN1N4625D-1?
JAN1N4625D-1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JAN1N4625D-1 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 JAN1N4625D-1?
For technical support, including JAN1N4625D-1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JAN1N4625D-1 requirements.
6.How does Aetrix verify that JAN1N4625D-1 is sourced from the original manufacturer or authorized distributors?
All JAN1N4625D-1 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 JAN1N4625D-1 meets industry standards.
7.What is the process for return or replacement of JAN1N4625D-1?
All JAN1N4625D-1 units undergo pre-shipment inspection (PSI). If there is an issue with JAN1N4625D-1, 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 JAN1N4625D-1 part is unused and in its original packaging.
Return procedure for JAN1N4625D-1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
JAN1N4625D-1 Tags
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