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Microchip Technology 1N4680
- Part No.:
- 1N4680
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
1N4680.pdf
- Description:
- DIODE ZENER 2.2V 500MW DO204AH
- Quantity:
- Payment:
- Shipping:
Inventory:4,266
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Product details
Overview
1N4680 from Microsemi is a 500 mW, 2.2 V ±5% axial-leaded Zener diode in DO-7 (DO-204AA) glass package, designed for precision voltage regulation at low currents (IZT = 50 µA), with ∆VZ = 0.75 V over 10–100 µA and IR ≤ 4.0 µA at VR = 1.0 V. It operates across –65°C to +175°C and is used in reference circuits, power supply feedback, and low-power biasing.
For engineers reviewing the 1N4680 datasheet, 1N4680 pinout, 1N4680 application, or 1N4680 equivalent, key selection criteria include its tight low-voltage regulation (2.2 V nominal), guaranteed 0.75 V regulation spread from 10 µA to 100 µA, hermetic DO-7 glass construction, MIL-PRF-19500 screening options, and compatibility with axial-leaded board mounting in space-constrained analog subsystems.
Technical Context
The 1N4680 functions as a two-terminal voltage reference diode operating in reverse breakdown, with Zener mechanism dominant below ~5 V. Its regulation is specified between 10 µA and 100 µA test current range, and it exhibits a negative temperature coefficient typical of sub-3 V Zeners.
It is constructed using an internally metallurgically bonded junction in a hermetically sealed DO-7 glass package, enabling operation up to +175°C and compliance with MIL-PRF-19500 screening levels when ordered with MQ/MX/MV/MSP prefixes. The cathode is marked by a band, and polarity must be observed for proper regulation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Zener Voltage | 2.2 V ±5% - defines stable reference point for low-voltage biasing and feedback networks |
| Zener Test Current | 50 µA - standardized operating point where VZ is measured and guaranteed |
| Voltage Regulation (∆VZ) | 0.75 V - max difference between VZ at 10 µA and 100 µA, critical for low-current stability |
| Max Reverse Leakage | 4.0 µA @ VR = 1.0 V - ensures minimal error current in high-impedance reference paths |
| Power Dissipation | 500 mW @ TL < 25°C, 3/8″ lead length - sets thermal design margin for lead-mounted layouts |
| Operating Temperature | –65°C to +175°C - supports aerospace, downhole, and extended industrial environments |
| Package | DO-7 (DO-204AA) glass axial-leaded - enables manual soldering, through-hole reliability, and hermetic sealing |
Pinout & Package
DO-7 (DO-204AA) glass axial-leaded package with tin-lead plated leads; cathode indicated by color band - device must be reverse-biased (banded end positive) for Zener operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Non-banded lead | Connected to circuit ground or lower potential node in reverse-biased configuration |
| Cathode | Banded lead | Connected to regulated voltage node; polarity marking is mandatory for correct orientation |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC-registered Zener | Complies with industry-standard 1N4678–1N4717 family specifications for interchangeability and testing |
| Internally metallurgically bonded junction | Enhances reliability and thermal stability vs. epoxy-bonded alternatives, meeting military-grade mechanical robustness |
| Guaranteed regulation from 10 µA to 100 µA | Enables use in ultra-low-current references without external amplification or buffering |
| MIL-PRF-19500 screening options | Available with MQ (JAN), MX (JANTX), MV (JANTXV), or MSP (JANS) prefixes for high-reliability programs |
| Nonsensitive to ESD | Qualified per MIL-STD-750 Method 1020 - eliminates need for handling precautions in assembly |
Applications
| Low-Voltage Reference Source | Power Supply Feedback Node |
|---|---|
Use Scenario: Generating a stable 2.2 V reference for ADC biasing or op-amp level-shifting in battery-powered sensors. IC Role / Device Role / Timing Role: Two-terminal passive voltage reference providing fixed potential independent of load current within 10–100 µA range. Use Value: Eliminates need for active reference ICs in cost-sensitive, low-power designs while maintaining ±5% accuracy and <0.75 V regulation spread. | Use Scenario: Setting output voltage in linear regulator feedback loop where 2.2 V reference enables compact resistor divider with minimal quiescent current. IC Role / Device Role / Timing Role: Zener-based shunt reference connected between regulator output and adjust pin to define regulated voltage. Use Value: Reduces component count and PCB area vs. three-terminal references; leverages inherent low-current capability (50 µA IZT) for efficiency. |
| Overvoltage Clamp Protection | Temperature-Stable Bias Generator |
Use Scenario: Protecting microcontroller I/O pins from transient overvoltage events in industrial control interfaces. IC Role / Device Role / Timing Role: Shunt clamp placed between signal line and ground, conducting above 2.2 V to limit excursion amplitude. Use Value: Provides fast, passive clamping with predictable threshold and low leakage (<4 µA), avoiding silicon diode forward-drop uncertainty. | Use Scenario: Establishing a repeatable bias point for transistor amplifier stages operating across –40°C to +125°C ambient. IC Role / Device Role / Timing Role: Zener diode biased at constant current to generate temperature-compensated DC offset. Use Value: Leverages known negative tempco of 2.2 V Zener to counteract transistor VBE drift, improving stage stability without trim components. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5221B | 2.4 V nominal, ±5%, DO-35 package, 500 mW, IZT = 20 mA - higher test current, larger regulation spread (1.5 V) | Less suitable for ultra-low-current references; better for higher-current shunt regulation | Select 1N5221B only if circuit supplies ≥20 mA Zener current and requires DO-35 footprint compatibility |
| BZX55C2V2 | 2.2 V nominal, ±5%, DO-35 package, 500 mW, IZT = 5 mA - moderate test current, regulation spread not specified over 10–100 µA | Lacks guaranteed low-current regulation spec; not qualified for MIL-PRF-19500 screening | Choose BZX55C2V2 for commercial-grade cost-sensitive designs where military screening and microamp-level regulation are not required |
Compared with 1N4680, the 1N5221B demands higher bias current and offers looser low-current regulation, while BZX55C2V2 lacks verified microamp-level performance and radiation-hardened construction - making 1N4680 preferred for precision, high-reliability, or extreme-temperature analog references.
Availability
1N4680 is available at Aetrix Electronics and suitable for low-power voltage reference, power supply feedback, and overvoltage protection applications requiring stable component supply across aerospace, industrial control, and medical instrumentation programs.
Supply support for 1N4680 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 (now part of Microchip Technology) is a U.S.-based semiconductor company specializing in high-reliability, radiation-hardened, and high-temperature analog and mixed-signal components.
The 1N4680 belongs to Microsemi's legacy 1N4678–1N4717 DO-7 Zener family, engineered for precision low-voltage regulation in mission-critical systems where hermetic packaging, wide temperature operation, and MIL-qualified variants are essential.
FAQ
What is the nominal Zener voltage and tolerance of the 1N4680?
The 1N4680 has a nominal Zener voltage of 2.2 V with a standard tolerance of ±5%. Tighter tolerances of ±2% and ±1% are available with C and D suffixes respectively, though the base 1N4680 part carries no suffix and defaults to ±5%. This value is measured at IZT = 50 µA under stabilized thermal conditions.
What is the maximum voltage regulation (∆VZ) specification for the 1N4680?
The 1N4680 guarantees a maximum voltage regulation (∆VZ) of 0.75 V, defined as the difference between Zener voltage measured at 10 µA and at 100 µA. This parameter ensures predictable low-current behavior critical for reference and biasing applications where operating current falls within that range.
Does the 1N4680 support military-grade screening, and how is it ordered?
Yes, the 1N4680 supports MIL-PRF-19500 screening levels including JAN, JANTX, JANTXV, and JANS. These are ordered by adding MQ, MX, MV, or MSP prefixes respectively to the base part number - for example, MQ1N4680 - and are subject to additional qualification testing and traceability requirements.
What package type and marking does the 1N4680 use?
The 1N4680 uses the DO-7 (also designated DO-204AA) hermetically sealed glass axial-leaded package. It is marked with the full part number "1N4680" on the body, and polarity is indicated by a cathode band - the banded end must be held positive relative to the anode for proper Zener operation.
What is the maximum reverse leakage current for the 1N4680, and at what voltage is it specified?
The 1N4680 has a maximum reverse leakage current (IR) of 4.0 µA, specified at VR = 1.0 V. This low leakage supports high-impedance reference nodes and minimizes error in precision analog circuits where even nanoamp-level currents affect accuracy.
1N4680 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):
- 2.2 V
- Tolerance:
- ±5%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- -
- Current - Reverse Leakage @ Vr:
- 4 µA @ 1 V
- Voltage - Forward (Vf) (Max) @ If:
- 1.1 V @ 200 mA
- Operating Temperature:
- -65°C ~ 175°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AH (DO-35)
1N4680 FAQ
1.How can I place an order for 1N4680 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N4680 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 1N4680 reliable?
The price and inventory of 1N4680 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N4680 is usually 5 days.
3.What payment methods are accepted for 1N4680?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N4680 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N4680?
1N4680 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N4680 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 1N4680?
For technical support, including 1N4680 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N4680 requirements.
6.How does Aetrix verify that 1N4680 is sourced from the original manufacturer or authorized distributors?
All 1N4680 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 1N4680 meets industry standards.
7.What is the process for return or replacement of 1N4680?
All 1N4680 units undergo pre-shipment inspection (PSI). If there is an issue with 1N4680, 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 1N4680 part is unused and in its original packaging.
Return procedure for 1N4680:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N4680 Tags
-
MMBZ5240B-7-F
Diodes Incorporated
-
BZT52C5V6T-7
Diodes Incorporated
-
MMSZ5231B-7-F
Diodes Incorporated
-
BZT52C15-7-F
Diodes Incorporated
-
BZX84C3V3LT1G
onsemi
-
MMSZ5245BS-7-F
Diodes Incorporated
-
MMSZ4682T1G
onsemi
-
BZT52C15S-7-F
Diodes Incorporated
-
MM5Z5V1ST1G
onsemi
-
SMAJ4744A-TP
Micro Commercial Co
-
BZT52C3V6LP-7
Diodes Incorporated
-
SMAZ12-13-F
Diodes Incorporated
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