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Microchip Technology 1N5230A
- Part No.:
- 1N5230A
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
1N5230A.pdf
- Description:
- DIODE ZENER 4.7V 500MW DO204AH
- Quantity:
- Payment:
- Shipping:
Inventory:8,987
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Product details
Overview
1N5230A from Microsemi is a 4.7 V, ±10% tolerance, 500 mW glass axial-lead Zener diode in DO-35 (DO-204AH) package, rated for 20 mA test current, 19 Ω dynamic impedance at IZT, and -65°C to +175°C operating temperature - used for precision voltage reference and low-power regulation in analog sensor signal conditioning circuits.
For engineers reviewing the 1N5230A datasheet, 1N5230A pinout, 1N5230A application, or 1N5230A equivalent, key selection criteria include Zener voltage tolerance (±10% for suffix A), thermal resistance (310°C/W on FR4), reverse leakage (50 μA @ 3.8 V), and radiation-hardened construction per MicroNote 050.
Technical Context
This discrete Zener diode operates in reverse breakdown to maintain stable DC voltage across its terminals under varying load and temperature conditions. Its DO-35 glass package provides hermetic sealing and inherent radiation hardness, with cathode polarity marked by a band.
Electrical behavior is defined at 25°C with 20 mA test current (IZT); dynamic impedance (ZZT = 19 Ω) and temperature coefficient (αVZ = ±0.030 %/°C) are specified for regulation stability across industrial temperature ranges.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Zener Voltage | 4.7 V @ 20 mA - defines regulated output voltage under standard test conditions |
| Zener Tolerance | ±10% (suffix A) - sets worst-case voltage deviation in production units |
| Power Dissipation | 500 mW at 25°C - maximum steady-state power before thermal derating applies |
| Zener Impedance | 19 Ω @ IZT - determines regulation sensitivity to current changes |
| Reverse Leakage | 50 μA @ 3.8 V - limits standby current in high-impedance bias networks |
| Temp. Coefficient | ±0.030 %/°C - quantifies voltage drift over -65°C to +175°C operating range |
| Forward Voltage | ≤1.5 V @ 200 mA - ensures predictable conduction in forward-biased protection paths |
Pinout & Package
DO-35 (DO-204AH) hermetically sealed glass axial-leaded package with cathode indicated by a single band; leads are tin-lead or RoHS-compliant matte-tin plated, solderable per MIL-STD-750 Method 2026.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Non-banded lead | Connected to lower-potential node during Zener operation; carries forward current when biased |
| Cathode | Banded lead | Connected to higher-potential node during regulation; defines Zener breakdown polarity |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC-registered device | Guarantees mechanical and electrical compliance with industry-standard 1N52xx series definitions |
| Radiation-hardened construction | Inherently hardened per MicroNote 050 - suitable for aerospace and high-reliability embedded systems |
| ESD-insensitive design | Qualified per MIL-STD-750 Method 1020 - eliminates need for external ESD protection in handling |
| Low capacitance | Typical <2 pF - preserves high-frequency signal integrity in RF bias and timing circuits |
| Wide temperature range | -65°C to +175°C operation - supports deployment in automotive engine control and downhole instrumentation |
Applications
| Industrial Sensor Biasing | Low-Power Reference Supply |
|---|---|
Use Scenario: Providing stable excitation voltage to resistive temperature detectors (RTDs) in PLC analog input modules. IC Role / Device Role / Timing Role: Voltage reference element establishing fixed bias point for bridge-based sensing circuits. Use Value: ±10% tolerance and ±0.030 %/°C TC ensure <±0.5% total error over -40°C to +85°C ambient range. |
Use Scenario: Generating precise 4.7 V reference for ADC front-end in battery-powered IoT node. IC Role / Device Role / Timing Role: Low-power Zener shunt regulator supplying clean reference to 12-bit SAR ADC. Use Value: 500 mW rating and 19 Ω ZZT enable stable regulation at 1–5 mA load currents with minimal dropout. |
| Overvoltage Clamp Protection | Microcontroller Reset Circuit |
Use Scenario: Clamping transient surges on 5 V rail in industrial HMI panel with isolated CAN interface. IC Role / Device Role / Timing Role: Reverse-biased Zener acting as crowbar element to limit rail excursion during EFT events. Use Value: 4.7 V breakdown and 50 μA IR @ 3.8 V provide fast response with negligible standby leakage. |
Use Scenario: Generating reset threshold for 3.3 V microcontroller powered from switched-mode supply. IC Role / Device Role / Timing Role: Zener-based voltage monitor triggering external reset IC when supply drops below 4.3 V. Use Value: Tight thermal coefficient ensures consistent trip point across extended temperature profiles. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4732A (ON Semiconductor) | Same 4.7 V nominal, ±5% tolerance (B suffix), 1 W power rating, DO-41 package | Higher power dissipation enables use in higher-current shunt regulators; larger DO-41 footprint requires PCB layout change | Select when >500 mW headroom or tighter tolerance is required; not drop-in due to package and power rating mismatch |
| BZX55-C4V7 (Vishay) | 4.7 V nominal, ±5% tolerance, 500 mW, DO-35 package, but rated for 100 °C max junction temperature (vs. 175 °C for 1N5230A) | Limited high-temp operation restricts use in under-hood automotive or downhole electronics | Choose for cost-sensitive commercial applications where full -65°C to +175°C range is unnecessary |
Compared with 1N4732A and BZX55-C4V7, the 1N5230A offers superior high-temperature capability and radiation hardness, making it preferred for aerospace, defense, and harsh-environment industrial designs - though its ±10% tolerance and DO-35 form factor require careful system-level margining.
Availability
1N5230A is available at Aetrix Electronics and suitable for industrial sensor biasing, low-power reference supplies, overvoltage clamp protection, and microcontroller reset circuits requiring stable component supply across extended temperature and reliability requirements.
Supply support for 1N5230A 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-voltage analog components for aerospace, defense, and industrial markets.
The 1N52xx series was designed specifically for precision voltage regulation in mission-critical systems where long-term stability, wide temperature operation, and intrinsic radiation tolerance are mandatory - not general-purpose replacement.
FAQ
What is the Zener voltage tolerance for 1N5230A?
The 1N5230A has a nominal Zener voltage of 4.7 V with a guaranteed tolerance of ±10%, as indicated by the "A" suffix per JEDEC specification. This tolerance applies across the full operating temperature range of -65°C to +175°C and is verified at 20 mA test current (IZT). The 1N5230A datasheet specifies this value in the Electrical Characteristics table on page 1.
What package type does 1N5230A use?
The 1N5230A uses the DO-35 (also designated DO-204AH) hermetically sealed glass axial-leaded package. It features tin-lead or RoHS-compliant matte-tin plating, cathode identification via a single band, and mechanical dimensions compliant with JEDEC standards. This package supports manual or wave soldering at 260°C for 10 seconds maximum.
Is 1N5230A suitable for high-temperature environments?
Yes, the 1N5230A is rated for continuous operation from -65°C to +175°C, with thermal resistance of 310°C/W on FR4 board. Its radiation-hardened construction per MicroNote 050 and ESD insensitivity (MIL-STD-750 Method 1020) make it appropriate for under-hood automotive, downhole oil/gas, and aerospace applications where extreme thermal cycling occurs.
How does the temperature coefficient affect 1N5230A performance?
The 1N5230A has a Zener voltage temperature coefficient (αVZ) of ±0.030 %/°C, measured between 25°C and 125°C at 20 mA. This means its regulated voltage drifts no more than ±0.00141 V per °C change - critical for maintaining accuracy in precision analog circuits across wide ambient ranges without active compensation.
Can 1N5230A be used as a direct replacement for 1N4732A?
No, the 1N5230A is not a direct replacement for 1N4732A: while both regulate at 4.7 V, the 1N4732A uses a DO-41 package, has ±5% tolerance (B suffix), and is rated for 1 W - requiring PCB layout changes and offering different thermal and tolerance behavior. System validation is required before substitution.
1N5230A 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):
- 4.7 V
- Tolerance:
- ±10%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 19 Ohms
- Current - Reverse Leakage @ Vr:
- 50 µA @ 1.9 V
- Voltage - Forward (Vf) (Max) @ If:
- 1.5 V @ 200 mA
- Operating Temperature:
- -65°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AH (DO-35)
1N5230A FAQ
1.How can I place an order for 1N5230A through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5230A 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 1N5230A reliable?
The price and inventory of 1N5230A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5230A is usually 5 days.
3.What payment methods are accepted for 1N5230A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5230A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5230A?
1N5230A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5230A 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 1N5230A?
For technical support, including 1N5230A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5230A requirements.
6.How does Aetrix verify that 1N5230A is sourced from the original manufacturer or authorized distributors?
All 1N5230A 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 1N5230A meets industry standards.
7.What is the process for return or replacement of 1N5230A?
All 1N5230A units undergo pre-shipment inspection (PSI). If there is an issue with 1N5230A, 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 1N5230A part is unused and in its original packaging.
Return procedure for 1N5230A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N5230A Tags
-
MMBZ5240B-7-F
Diodes Incorporated
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BZT52C5V6T-7
Diodes Incorporated
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MMSZ5231B-7-F
Diodes Incorporated
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BZT52C15-7-F
Diodes Incorporated
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BZX84C3V3LT1G
onsemi
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MMSZ5245BS-7-F
Diodes Incorporated
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MMSZ4682T1G
onsemi
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BZT52C15S-7-F
Diodes Incorporated
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MM5Z5V1ST1G
onsemi
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SMAJ4744A-TP
Micro Commercial Co
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BZT52C3V6LP-7
Diodes Incorporated
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SMAZ12-13-F
Diodes Incorporated
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