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Microchip Technology JAN1N4625-1
- Part No.:
- JAN1N4625-1
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
JAN1N4625-1.pdf
- Description:
- DIODE ZENER 5.1V 500MW DO204AH
- Quantity:
- Payment:
- Shipping:
Inventory:7,015
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Product details
Overview
JAN1N4625-1 from Microsemi is a 500 mW, 5.1 V metallurgically bonded glass Zener diode in DO-35 (DO-204AH) axial-leaded package, qualified to JAN level per MIL-PRF-19500/435. It delivers ±5% Zener voltage tolerance, 1500 Ω dynamic impedance at 250 mA test current, and 3.0 µA maximum reverse leakage at 3.0 V, enabling precision voltage regulation in military-grade power supply references and analog signal conditioning circuits.
For engineers reviewing the JAN1N4625-1 datasheet, JAN1N4625-1 pinout, JAN1N4625-1 application, or JAN1N4625-1 equivalent, key selection criteria include its MIL-qualified reliability, low noise density (2 µV/√Hz), temperature coefficient of –0.045/+0.030 %/°C, and thermal resistance of 250 °C/W junction-to-lead - critical for stable operation in high-reliability embedded systems and aerospace power rails.
Technical Context
This Zener diode operates in reverse breakdown with cathode-banded polarity, requiring the banded end to be held positive relative to the anode for regulation. Its metallurgical bond construction ensures mechanical robustness and hermetic sealing, supporting operation across –65 °C to +175 °C junction temperature range.
It exhibits a defined Zener test current (IZT) of 250 mA, dynamic impedance (ZZT) of 1500 Ω, and maximum Zener current (IZM) of 70.0 mA - parameters tightly coupled to its 500 mW power rating and linear derating above 50 °C lead temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 5.1 V at 250 mA - sets precise reference voltage for feedback loops and voltage clamping. |
| Power Dissipation | 500 mW at 25 °C - defines maximum continuous DC power handling before thermal derating begins. |
| Zener Impedance (ZZT) | 1500 Ω at 250 mA - determines regulation stiffness under load variation; lower values improve line regulation. |
| Reverse Leakage (IR) | 5.0 µA at 3.0 V - limits error current in high-impedance reference nodes and bias networks. |
| Noise Density (ND) | 2 µV/√Hz at 250 mA - enables low-noise analog references in precision instrumentation and ADC front-ends. |
| Temp Coefficient (αVZ) | –0.045/+0.030 %/°C - quantifies voltage drift over temperature; critical for wide-range stability without external compensation. |
| Thermal Resistance | 250 °C/W junction-to-lead - governs allowable power vs. lead-mounting conditions; requires ≥10 mm lead length for rated dissipation. |
Pinout & Package
DO-35 (DO-204AH) axial-leaded glass package with hermetically sealed construction. Cathode identified by single black band; banded end must be biased positive for Zener operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Reference ground node | Connected to circuit common; forms return path for Zener current during regulation. |
| Cathode | Regulated output node | Banded terminal; supplies stable 5.1 V when reverse-biased above breakdown threshold. |
Key Features
| Feature | Design Value |
|---|---|
| Metallurgical bond construction | Ensures mechanical integrity and hermetic seal for long-term reliability in harsh environments. |
| MIL-PRF-19500/435 qualification (JAN level) | Validates performance to military screening standards including temperature cycling, burn-in, and lot acceptance testing. |
| Low noise density | 2 µV/√Hz at 5.1 V enables use in low-noise analog references without additional filtering. |
| Wide operating temperature range | –65 °C to +175 °C junction capability supports deployment in avionics, downhole, and space-qualified systems. |
| Minimal capacitance | Typical <2 pF (per Figure 3) preserves high-frequency response in RF bias and fast-switching applications. |
Applications
| Aerospace Power Reference | Industrial Sensor Excitation |
|---|---|
Use Scenario: Providing stable 5.1 V reference for ADCs and DACs in satellite telemetry modules operating across –55 °C to +125 °C ambient. IC Role / Device Role / Timing Role: Zener regulator supplying precision bias to analog front-end ICs in radiation-hardened signal chains. Use Value: Maintains ±0.5% output stability over full temperature range due to controlled αVZ and hermetic DO-35 packaging. | Use Scenario: Biasing 4–20 mA current-loop transmitters in oilfield pressure sensors exposed to thermal shock and vibration. IC Role / Device Role / Timing Role: Primary voltage reference for op-amp-based current source circuitry in loop-powered field instruments. Use Value: Delivers repeatable 5.1 V regulation despite 1000+ thermal cycles, validated by JAN-level qualification and metallurgical bond durability. |
| Military Radio Bias Network | Test Equipment Voltage Clamp |
Use Scenario: Stabilizing local oscillator supply rails in HF/VHF tactical radios subjected to ESD per MIL-STD-750 method 1020. IC Role / Device Role / Timing Role: Low-noise Zener clamp protecting sensitive RF synthesizer ICs from supply transients. Use Value: 2 µV/√Hz noise density prevents phase noise degradation; non-ESD-sensitive design eliminates need for external protection. | Use Scenario: Protecting DUT inputs on automated test equipment during high-speed digital pattern generation. IC Role / Device Role / Timing Role: Fast-response overvoltage clamp limiting transient spikes to ≤5.6 V at input nodes. Use Value: 1500 Ω ZZT ensures predictable clamping behavior under 100 ns pulses; DO-35 leads enable direct PCB mounting near protected pins. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4625US | Same 5.1 V Zener voltage and DO-35 package, but commercial-grade (non-MIL-qualified); RoHS-compliant matte-tin plating. | Lacks JAN-level screening, burn-in, and extended temperature validation; suitable only for non-critical industrial designs. | Select when cost sensitivity outweighs mission-critical reliability requirements and MIL-PRF-19500 compliance is not mandated. |
| JANTX1N4625-1 | Identical electrical specs and DO-35 package, but qualified to JANTX level - includes additional environmental stress screening beyond JAN. | Approved for higher-reliability programs (e.g., defense subsystems) where enhanced lot traceability and extended life testing are required. | Choose when system-level qualification demands tighter parametric limits and broader failure-mode coverage than JAN level provides. |
Compared with 1N4625US and JANTX1N4625-1, the JAN1N4625-1 offers the baseline MIL-qualified performance needed for Class H (high-reliability) applications without the cost or lead time premium of JANTX, while maintaining full compatibility with legacy JAN-designated systems.
Availability
JAN1N4625-1 is available at Aetrix Electronics and suitable for aerospace power references, industrial sensor excitation, military radio bias networks, and test equipment voltage clamps requiring stable component supply with full traceability and long-term obsolescence management.
Supply support for JAN1N4625-1 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) is a U.S.-based semiconductor company specializing in high-reliability analog and mixed-signal components for aerospace, defense, and industrial markets.
The JAN1N4625-1 belongs to Microsemi's legacy 1N46xx-1 series of metallurgically bonded Zener diodes, engineered specifically for MIL-PRF-19500/435-compliant voltage regulation in mission-critical systems where hermeticity, radiation tolerance, and thermal resilience are mandatory.
FAQ
What is the Zener voltage tolerance of JAN1N4625-1?
JAN1N4625-1 has a nominal Zener voltage of 5.1 V with a standard tolerance of ±5%, as specified in the JEDEC-registered electrical characteristics table. This tolerance applies under thermal equilibrium at 25 °C with a 250 mA test current, and is consistent across all JAN-level units per MIL-PRF-19500/435 screening requirements. The JAN1N4625-1 does not offer tighter 2% or 1% tolerances - those variants use suffixes 'C' or 'D' and are designated separately (e.g., JAN1N4625C-1).
Is JAN1N4625-1 RoHS compliant?
No, JAN1N4625-1 is not RoHS compliant. Per the manufacturer's documentation, RoHS-compliant versions (designated with 'e3' suffix, e.g., 1N4625-1e3) are available only for commercial-grade parts, not for JAN, JANTX, JANTXV, or JANS reliability levels. The JAN1N4625-1 uses traditional tin-lead plating per MIL-STD-750 method 2026 and retains lead content to meet military solderability and reliability standards.
What is the maximum Zener current (IZM) for JAN1N4625-1?
The maximum Zener current (IZM) for JAN1N4625-1 is 70.0 mA, derived from its 500 mW power rating and 5.1 V Zener voltage (P = V × I → I = 0.5 W / 5.1 V ≈ 98 mA, but derated to 70.0 mA per published electrical characteristics). This value is measured at 25 °C lead temperature and assumes proper heat sinking; actual usable current decreases linearly above 50 °C lead temperature per the published derating curve.
How is polarity marked on JAN1N4625-1?
JAN1N4625-1 uses a single black band to indicate the cathode terminal. The banded end must be held positive with respect to the unmarked (anode) end to operate in Zener breakdown mode. This marking convention is standardized across the 1N46xx-1 series and aligns with JEDEC DO-35 package polarity definitions. Incorrect polarity connection will forward-bias the diode, resulting in ~1.1 V drop and no regulation.
Does JAN1N4625-1 require heatsinking in typical PCB applications?
JAN1N4625-1 does not require external heatsinking at full 500 mW dissipation if mounted with ≥10 mm (3/8 inch) lead length from the glass body, as specified in the thermal resistance data (RθJL = 250 °C/W). On standard FR4 boards with 1 oz copper, derating begins at 50 °C lead temperature - meaning sustained 500 mW operation is viable only with adequate lead length and ambient cooling. For continuous 70 mA Zener current, board layout must ensure thermal paths match the documented RθJL condition to avoid exceeding 175 °C junction limit.
JAN1N4625-1 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:
- ±5%
- 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)
JAN1N4625-1 FAQ
1.How can I place an order for JAN1N4625-1 through Aetrix?
Please submit a Request for Quotation (RFQ) for JAN1N4625-1 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 JAN1N4625-1 reliable?
The price and inventory of JAN1N4625-1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for JAN1N4625-1 is usually 5 days.
3.What payment methods are accepted for JAN1N4625-1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for JAN1N4625-1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for JAN1N4625-1?
JAN1N4625-1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JAN1N4625-1 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 JAN1N4625-1?
For technical support, including JAN1N4625-1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JAN1N4625-1 requirements.
6.How does Aetrix verify that JAN1N4625-1 is sourced from the original manufacturer or authorized distributors?
All JAN1N4625-1 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 JAN1N4625-1 meets industry standards.
7.What is the process for return or replacement of JAN1N4625-1?
All JAN1N4625-1 units undergo pre-shipment inspection (PSI). If there is an issue with JAN1N4625-1, 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 JAN1N4625-1 part is unused and in its original packaging.
Return procedure for JAN1N4625-1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
JAN1N4625-1 Tags
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