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Microchip Technology 1N980B
- Part No.:
- 1N980B
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AA, DO-7, Axial
- Datasheet:
-
1N980B.pdf
- Description:
- DIODE ZENER 62V 500MW DO7
- Quantity:
- Payment:
- Shipping:
Inventory:3,372
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Product details
Overview
1N980B from Microsemi is a silicon 500 mW axial-lead Zener diode in DO-35 (DO-204AH) package, rated for 62 V nominal Zener voltage with ±5% tolerance, 2.0 mA Zener test current, 2000 Ω maximum Zener impedance at IZT, and +0.097 %/°C temperature coefficient. It regulates voltage in low-power reference and protection circuits across industrial and aerospace systems.
For engineers reviewing the 1N980B datasheet, 1N980B pinout, 1N980B application, or 1N980B equivalent, key selection criteria include its 62 V breakdown voltage, 400 mW max DC power dissipation at 75 °C lead temperature, DO-35 mechanical compatibility, cathode-band polarity marking, and RoHS-compliant e3 variant availability.
Technical Context
The 1N980B operates as a two-terminal voltage reference device, conducting in reverse bias above its specified Zener voltage to clamp or regulate voltage. Its 62 V nominal breakdown is stabilized by controlled doping and junction geometry, with thermal coefficient (+0.097 %/°C) indicating predictable drift over temperature.
It delivers stable regulation under steady-state DC currents up to 6.0 mA (IZM), with low reverse leakage (<5 μA at 47.1 V) and minimal capacitance per Figure 3. The DO-35 glass package ensures hermetic sealing, ESD insensitivity per MIL-STD-750 Method 1020, and radiation hardness per MicroNote 050.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Zener Voltage | 62 V ±5% - defines precise clamping threshold for overvoltage protection or reference generation |
| Zener Test Current | 2.0 mA - operating point where VZ is measured and impedance is characterized |
| Max Zener Impedance | 2000 Ω at IZT - indicates regulation stiffness; higher values imply greater output voltage variation under load change |
| Max DC Zener Current | 6.0 mA - maximum continuous reverse current before exceeding 400 mW dissipation at 75 °C lead temp |
| Temp Coefficient αVZ | +0.097 %/°C - quantifies voltage drift per degree Celsius; enables thermal error budgeting in precision designs |
| Reverse Leakage Current | <5 μA at 47.1 V - ensures minimal quiescent power loss below breakdown, critical for battery-powered circuits |
| Forward Voltage | 1.3 V max @ 200 mA - defines conduction drop when used in forward-biased applications like ESD clamping |
Pinout & Package
Package: DO-35 (DO-204AH), hermetically sealed axial-lead glass body, 0.2 g weight, tin-lead or RoHS-compliant matte-tin plating, cathode indicated by colored band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Non-banded end | Connected to lower-potential node; forward conduction path when biased positively relative to cathode |
| Cathode | Banded end | Connected to higher-potential node during Zener operation; reverse-bias terminal where regulated voltage appears |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC-registered Zener series | Ensures standardized electrical behavior and interchangeability across qualified suppliers |
| Hermetic DO-35 glass package | Provides long-term reliability in harsh environments including high humidity, wide temperature swings, and radiation exposure |
| Nonsensitive to ESD | Withstands electrostatic discharge per MIL-STD-750 Method 1020 without parameter shift or failure |
| RoHS-compliant option (e3 suffix) | Meets EU Directive 2011/65/EU with annealed matte-tin plating, enabling compliance in export-sensitive designs |
| Internal metallurgical bond option (-1 suffix) | Enhances mechanical robustness and thermal cycling endurance for military/aerospace mounting requirements |
Applications
| Industrial Power Supply Reference | Aerospace Voltage Clamp |
|---|---|
Use Scenario: Stabilizing feedback voltage in isolated DC-DC converter error amplifiers. IC Role / Device Role / Timing Role: Two-terminal passive voltage reference providing stable 62 V setpoint for optocoupler-driven regulation loop. Use Value: Enables tight output voltage tolerance (±1%) over -55 °C to +125 °C ambient via predictable +0.097 %/°C drift and low 2000 Ω dynamic impedance. |
Use Scenario: Protecting avionics sensor inputs from transient overvoltage events on 28 V aircraft buses. IC Role / Device Role / Timing Role: Reverse-biased shunt clamp absorbing surge energy while holding node voltage ≤62 V. Use Value: Withstands 300 mA surge pulses (1/120 sec) and maintains <5 μA leakage at 47.1 V, minimizing standby current drain in always-on systems. |
| Test Equipment Calibration Standard | Legacy Telecom Line Interface |
Use Scenario: Serving as traceable voltage reference in portable multimeter internal ADC reference dividers. IC Role / Device Role / Timing Role: Precision Zener element in resistive divider network generating known 62 V reference for analog-to-digital conversion. Use Value: ±5% initial tolerance and hermetic DO-35 construction ensure calibration stability over 10+ years without drift-induced recalibration cycles. |
Use Scenario: Biasing hybrid transformer center-taps in analog telephone line interface cards (LICs). IC Role / Device Role / Timing Role: DC bias source establishing common-mode voltage on balanced tip/ring lines while blocking AC signal paths. Use Value: Low 1.3 V forward drop and 62 V reverse breakdown allow dual-mode operation-forward conduction for bias, reverse clamping for lightning surge suppression. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4743A (ON Semiconductor) | 62 V ±5%, 1.5 W power rating, DO-41 package, 10 Ω Zener impedance at 31 mA | Higher power handling but larger footprint; requires different PCB layout and thermal relief | Select when >500 mW surge capability or lower dynamic impedance is required; not drop-in due to DO-41 vs. DO-35 mechanical mismatch |
| BZX55C62 (Vishay) | 62 V ±5%, 500 mW, DO-35 package, 100 Ω Zener impedance at 5 mA, +0.09 %/°C TC | Near-identical package and voltage, but tighter impedance and slightly lower tempco | Preferred for new designs needing improved regulation stiffness; verified compatible in legacy DO-35 footprints with same solder profile |
Compared with 1N980B, the 1N4743A offers higher surge resilience but demands board redesign, while the BZX55C62 delivers superior dynamic regulation in the same DO-35 form factor-making it the most seamless upgrade path for performance-critical references.
Availability
1N980B is available at Aetrix Electronics and suitable for industrial power supply reference, aerospace voltage clamp, test equipment calibration standard, and legacy telecom line interface applications requiring stable component supply and long-lifecycle support.
Supply support for 1N980B 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 analog, mixed-signal, and RF solutions for aerospace, defense, and industrial markets.
The 1N957B–1N992B series was engineered for mission-critical voltage regulation where hermetic packaging, radiation tolerance, and JEDEC-standardized parametrics are mandatory-not just general-purpose Zener replacement.
FAQ
What is the Zener voltage tolerance for 1N980B?
The 1N980B has a nominal Zener voltage of 62 V with a tolerance of ±5%, as indicated by the "B" suffix per JEDEC registration. This tolerance applies at 25 °C with 2.0 mA test current and is maintained across the full operating temperature range of –65 °C to +175 °C, though voltage drift follows the +0.097 %/°C temperature coefficient.
Can 1N980B be used in surface-mount designs?
No-1N980B is exclusively offered in the axial-lead DO-35 (DO-204AH) through-hole package. For surface-mount equivalents, Microsemi lists MLL980B in DO-213AA (MELF) format; however, that part requires separate qualification and is not a direct drop-in replacement due to differing thermal and mechanical characteristics.
What is the maximum power dissipation for 1N980B at room temperature?
At 25 °C ambient temperature on an FR4 PCB with 1 oz copper, 4 mm² pads, and 1 mm × 25 mm traces, the 1N980B is rated for 480 mW steady-state dissipation. However, its absolute maximum DC power is limited to 400 mW when lead temperature reaches 75 °C, which governs safe continuous operation under typical mounting conditions.
Does 1N980B meet RoHS requirements?
Yes-the base 1N980B is not RoHS-compliant, but the variant 1N980Be3 is explicitly certified to EU Directive 2011/65/EU. It uses annealed matte-tin plating instead of tin-lead, and all materials comply with restricted substance thresholds; the "e3" suffix must appear in the orderable part number to guarantee compliance.
How does the temperature coefficient affect 1N980B's regulation accuracy?
The +0.097 %/°C temperature coefficient means 1N980B's Zener voltage increases by approximately 60 mV per °C rise above 25 °C. Over a –55 °C to +125 °C range, this contributes up to ±1.1 V drift-so designs requiring sub-1% total voltage error must include compensation or operate within narrower thermal bands.
1N980B Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- DO-204AA, DO-7, Axial
- Packaging:
- Bulk
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 62 V
- Tolerance:
- ±5%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 185 Ohms
- Current - Reverse Leakage @ Vr:
- 5 µA @ 47.1 V
- Voltage - Forward (Vf) (Max) @ If:
- 1.1 V @ 200 mA
- Operating Temperature:
- -65°C ~ 175°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-7
1N980B FAQ
1.How can I place an order for 1N980B through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N980B 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 1N980B reliable?
The price and inventory of 1N980B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N980B is usually 5 days.
3.What payment methods are accepted for 1N980B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N980B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N980B?
1N980B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N980B 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 1N980B?
For technical support, including 1N980B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N980B requirements.
6.How does Aetrix verify that 1N980B is sourced from the original manufacturer or authorized distributors?
All 1N980B 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 1N980B meets industry standards.
7.What is the process for return or replacement of 1N980B?
All 1N980B units undergo pre-shipment inspection (PSI). If there is an issue with 1N980B, 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 1N980B part is unused and in its original packaging.
Return procedure for 1N980B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N980B 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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