My Inquiry
My Account
Microchip Technology 1N980A
- Part No.:
- 1N980A
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AA, DO-7, Axial
- Datasheet:
-
1N980A.pdf
- Description:
- DIODE ZENER 62V 500MW DO7
- Quantity:
- Payment:
- Shipping:
Inventory:2,403
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
1N980A from Microsemi is a silicon 500 mW axial-lead Zener diode with nominal Zener voltage 62 V, ±10% tolerance (A suffix), 2.0 mA Zener test current (IZT), 2000 Ω maximum Zener impedance at IZT, and −65 °C to +175 °C operating temperature range. It serves as a precision voltage reference or overvoltage clamp in low-power analog circuits, power supply feedback paths, and industrial sensor conditioning stages.
For engineers reviewing the 1N980A datasheet, 1N980A pinout, 1N980A application, or 1N980A equivalent, key selection criteria include its 62 V regulation point, DO-35 glass package thermal resistance (310 °C/W on FR4), 5 μA max reverse leakage at 47.1 V, and compatibility with leaded through-hole assembly under MIL-STD-750 soldering conditions.
Technical Context
The 1N980A operates in reverse breakdown mode with cathode-banded polarity, requiring the banded end to be held positive relative to the anode for regulation. Its Zener voltage exhibits +0.097 %/°C temperature coefficient, resulting in predictable drift across industrial temperature ranges.
It delivers stable regulation at 2.0 mA test current with 2000 Ω dynamic impedance, supporting consistent voltage reference performance under varying load currents up to 6.0 mA DC maximum (IZM) and 30 A surge (IZSM, 1/120 s pulse). Thermal derating begins above 50 °C lead temperature per JEDEC DO-35 mounting guidelines.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 62 V nominal, ±10% tolerance - defines primary regulation setpoint for feedback or clamping |
| Zener Test Current (IZT) | 2.0 mA - standard bias point where VZ and ZZT are specified and validated |
| Zener Impedance (ZZT) | 2000 Ω max at IZT - determines output voltage variation under load current changes |
| Max DC Zener Current (IZM) | 6.0 mA - maximum continuous reverse current before exceeding 400 mW dissipation at 75 °C lead temp |
| Reverse Leakage (IR) | 5 μA max at 47.1 V - ensures minimal error current in high-impedance reference nodes |
| Temp Coefficient (αVZ) | +0.097 %/°C - enables predictable voltage drift compensation in wide-temperature designs |
| Power Dissipation | 500 mW at TL ≤ 50 °C (3/8″ lead length) - sets board-level thermal layout requirements |
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 band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Non-banded end | Connected to circuit ground or lower potential node during Zener operation |
| Cathode | Banded end | Connected to regulated voltage node; must be held positive relative to anode for breakdown conduction |
Key Features
| Feature | Design Value |
|---|---|
| Nominal Zener voltage 62 V with ±10% tolerance | Enables cost-optimized voltage reference design where tight regulation is not required |
| JEDEC-registered DO-35 package | Ensures mechanical and thermal compatibility with legacy through-hole manufacturing processes |
| −65 °C to +175 °C operating temperature range | Supports deployment in harsh environments including automotive under-hood and industrial control cabinets |
| Nonsensitive to ESD per MIL-STD-750 Method 1020 | Reduces need for handling precautions during manual assembly or field service |
| Minimal capacitance (typical <2 pF) | Maintains high-frequency stability in RF detector or fast transient clamp applications |
Applications
| Industrial Power Supply Feedback | Overvoltage Protection Clamp |
|---|---|
Use Scenario: Regulating output voltage in isolated flyback converters using optocoupler feedback loops. IC Role / Device Role / Timing Role: Zener reference providing stable 62 V threshold for TL431-like comparator input or direct optocoupler LED bias. Use Value: Maintains ±5% output regulation across line/load variations without active IC, leveraging 62 V setpoint and low 5 μA leakage. |
Use Scenario: Clamping transient surges on 48 V DC bus lines in factory automation controllers. IC Role / Device Role / Timing Role: Passive shunt element diverting excess energy when bus voltage exceeds 62 V. Use Value: Absorbs 30 A surge pulses (1/120 s) without failure, protecting downstream MOSFETs and microcontrollers. |
| Sensor Signal Conditioning | Legacy Equipment Voltage Reference |
Use Scenario: Providing stable bias for RTD or thermistor measurement bridges in process instrumentation. IC Role / Device Role / Timing Role: Low-drift 62 V reference source feeding precision resistor dividers or op-amp gain networks. Use Value: +0.097 %/°C TC allows predictable calibration offset correction across −40 °C to +85 °C operating range. |
Use Scenario: Replacing obsolete Zeners in military-grade avionics maintenance spares for analog panel meters. IC Role / Device Role / Timing Role: Direct drop-in replacement for legacy 1N980A units in DO-35 sockets with identical marking and lead form. Use Value: JEDEC registration and MIL-STD-750 qualification ensure form-fit-function compliance with original equipment specifications. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N980B | Same 62 V nominal voltage but ±5% tolerance (B suffix) and 185 Ω ZZT vs. 2000 Ω for 1N980A | Higher precision regulation needed; lower impedance improves load regulation | Select 1N980B when tighter voltage accuracy and lower dynamic impedance are required for feedback loops |
| MMBZ5257B | Surface-mount SOT-23 package, 62 V, ±5%, 200 mW rating, 1000 Ω ZZT, 100 nA IR at 47.1 V | Automated assembly, space-constrained PCBs, lower leakage for high-Z nodes | Choose MMBZ5257B for modern SMT production where board area and leakage current are critical |
Compared with 1N980A, 1N980B offers improved voltage accuracy and lower impedance for higher-precision references, while MMBZ5257B provides SMT compatibility and ultra-low leakage at reduced power rating-enabling trade-offs between legacy fit, precision, and modern manufacturability.
Availability
1N980A is available at Aetrix Electronics and suitable for industrial power supplies, overvoltage protection circuits, and sensor signal conditioning requiring stable component supply and long-term obsolescence support.
Supply support for 1N980A 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 radiation-hardened components for aerospace, defense, and industrial markets.
The 1N957B–1N992B series was designed specifically for ruggedized, through-hole Zener regulation in mission-critical systems where extended temperature operation and JEDEC-standard reliability are mandatory.
FAQ
What is the Zener voltage tolerance of the 1N980A?
The 1N980A has a nominal Zener voltage of 62 V with ±10% tolerance, as indicated by the "A" suffix per Microsemi's documentation. This means the actual measured VZ falls between 55.8 V and 68.2 V at 2.0 mA test current and 25 °C ambient. The 1N980A is intended for applications where this wider tolerance is acceptable, such as non-critical clamping or coarse reference functions.
Does the 1N980A have RoHS-compliant packaging options?
Yes, the 1N980A is available in RoHS-compliant form with the "e3" suffix (e.g., 1N980Ae3), featuring annealed matte-tin plating per MIL-STD-750 Method 2026. The base 1N980A part uses traditional tin-lead plating, while the e3 variant replaces lead with compliant materials without altering electrical or thermal specifications.
What is the maximum steady-state power dissipation for the 1N980A?
The 1N980A is rated for 500 mW steady-state power dissipation at a lead temperature (TL) of ≤50 °C with leads mounted 3/8″ (10 mm) from the body. When mounted on an FR4 PCB with 1 oz copper, its derated power drops to 480 mW at TA ≤25 °C due to higher thermal resistance (310 °C/W junction-to-ambient).
How does the temperature coefficient affect the 1N980A's regulation voltage?
The 1N980A has a positive temperature coefficient of +0.097 %/°C, meaning its Zener voltage increases by approximately 60 mV per °C rise in junction temperature. At 100 °C junction temperature, VZ rises ~5.4 V above its 25 °C value-critical for designs operating across wide ambient ranges, especially in unventilated enclosures.
Can the 1N980A be used in surface-mount applications?
No, the 1N980A is exclusively a through-hole DO-35 axial-lead device and is not suitable for direct SMT placement. For surface-mount equivalents, Microsemi offers the MLL980B in DO-213AA (MELF) package; however, the 1N980A itself requires wave or hand soldering with 260 °C/10 s max solder temperature per MIL-STD-750.
1N980A 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:
- ±10%
- 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
1N980A FAQ
1.How can I place an order for 1N980A through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N980A 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 1N980A reliable?
The price and inventory of 1N980A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N980A is usually 5 days.
3.What payment methods are accepted for 1N980A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N980A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N980A?
1N980A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N980A 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 1N980A?
For technical support, including 1N980A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N980A requirements.
6.How does Aetrix verify that 1N980A is sourced from the original manufacturer or authorized distributors?
All 1N980A 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 1N980A meets industry standards.
7.What is the process for return or replacement of 1N980A?
All 1N980A units undergo pre-shipment inspection (PSI). If there is an issue with 1N980A, 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 1N980A part is unused and in its original packaging.
Return procedure for 1N980A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N980A 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
Tech Hub
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
