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Microchip Technology 1N5230B
- Part No.:
- 1N5230B
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
1N5230B.pdf
- Description:
- DIODE ZENER 4.7V 500MW DO204AH
- Quantity:
- Payment:
- Shipping:
Inventory:6,351
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Product details
Overview
1N5230B from Microsemi is a 4.7 V, ±5% tolerance, 500 mW glass axial-lead Zener diode in DO-35 (DO-204AH) package, designed for precision voltage regulation in low-power analog circuits, reference supplies, and overvoltage protection. It delivers stable regulation at 20 mA test current with 19 Ω dynamic impedance and operates across –65°C to +175°C.
For engineers reviewing the 1N5230B datasheet, 1N5230B pinout, 1N5230B application, or 1N5230B equivalent, key selection criteria include its 4.7 V nominal Zener voltage, 5% tolerance, 19 Ω Zener impedance at IZT, temperature coefficient of ±0.030 %/°C, and DO-35 mechanical compatibility in legacy through-hole designs.
Technical Context
This discrete Zener diode operates in reverse breakdown mode to maintain a stable DC reference voltage under varying load and line conditions. Its regulation performance is defined at 20 mA test current (IZT), with dynamic impedance measured at both IZT and 0.25 mA (IZK) to ensure sharp knee characteristics and unit stability.
The device exhibits low capacitance (typical <2 pF at VR = 0 V, per Figure 2), minimal ESD sensitivity (MIL-STD-750 Method 1020), and inherent radiation hardness per MicroNote 050 - making it suitable for aerospace, industrial, and high-reliability embedded systems where thermal and environmental robustness are critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Zener Voltage (VZ) | 4.7 V at 20 mA - defines precise regulation point for biasing, clamping, or reference generation |
| Zener Tolerance | ±5% (B suffix) - ensures voltage accuracy within ±0.235 V for predictable circuit margining |
| Power Dissipation | 500 mW at 25°C - supports continuous operation in compact PCB layouts with adequate lead length |
| Zener Impedance (ZZT) | 19 Ω at IZT - indicates low AC impedance for stable regulation under dynamic load transients |
| Temperature Coefficient | ±0.030 %/°C - enables low-drift reference design over –65°C to +175°C operating range |
| Reverse Current (IR) | 50 μA at VR = 3.8 V - confirms low leakage below breakdown, critical for standby power integrity |
| Forward Voltage | ≤1.5 V at 200 mA - ensures reliable forward conduction during fault or polarity-reversal events |
Pinout & Package
DO-35 (DO-204AH) hermetically sealed glass axial-leaded package with cathode indicated by a single black 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 end | Connected to lower potential node; must be negative relative to cathode for Zener operation |
| Cathode | Banded end | Connected to higher potential node; regulates voltage at this terminal when reverse-biased |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC-registered DO-35 construction | Ensures mechanical and soldering compatibility with legacy axial-lead assembly processes and tooling |
| Stable 4.7 V regulation at 20 mA | Provides repeatable reference voltage without external trimming in fixed-voltage applications |
| Low 19 Ω dynamic impedance | Minimizes output voltage variation under changing load currents, improving supply rejection |
| Radiation-hardened per MicroNote 050 | Validated for use in space-qualified or high-radiation terrestrial environments without derating |
| Nonsensitive to ESD (MIL-STD-750 Method 1020) | Eliminates need for handling precautions or on-board ESD protection in final assembly |
Applications
| Reference Voltage Source | Overvoltage Clamp |
|---|---|
Use Scenario: Providing a stable 4.7 V reference for op-amp comparators, ADC voltage references, or analog sensor excitation circuits. IC Role / Device Role / Timing Role: Zener diode acts as a passive two-terminal shunt voltage reference, absorbing excess current to hold node voltage constant. Use Value: Delivers ±5% accuracy and ±0.030 %/°C drift, enabling sub-1% total error over industrial temperature range without calibration. | Use Scenario: Protecting microcontroller I/O pins or analog front-end inputs from transient overvoltage events up to ±15 V. IC Role / Device Role / Timing Role: Functions as a bidirectional clamp when paired with series resistor, limiting voltage swing to safe levels. Use Value: Low 19 Ω impedance ensures fast response to transients, while 500 mW rating sustains short-duration surges without failure. |
| Current-Regulated Bias Supply | Temperature-Stable Oscillator Bias |
Use Scenario: Generating a fixed bias current for JFETs or bipolar transistors in amplifier stages requiring low-drift quiescent points. IC Role / Device Role / Timing Role: Serves as voltage-controlled current source when combined with series resistor, setting IB or ID. Use Value: ±0.030 %/°C tempco and 500 mW power rating allow stable bias current over –65°C to +175°C without thermal runaway. | Use Scenario: Supplying regulated bias to crystal oscillator sustaining amplifiers in timing circuits where frequency stability depends on supply consistency. IC Role / Device Role / Timing Role: Provides low-noise, low-drift DC bias to oscillator core, reducing phase noise contribution from supply variation. Use Value: Minimal capacitance (<2 pF) avoids loading crystal terminals, preserving Q-factor and long-term frequency accuracy. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4732A (ON Semiconductor) | 4.7 V, ±5%, 1 W power rating, DO-41 package, 14 Ω ZZT, +0.035 %/°C tempco | Higher power dissipation allows greater surge handling but requires larger board area and different mounting | Select when >500 mW peak power or improved thermal margin is required; not drop-in due to DO-41 footprint |
| BZX55-C4V7 (Vishay) | 4.7 V, ±5%, 500 mW, DO-35 package, 20 Ω ZZT, ±0.03 %/°C tempco, AEC-Q200 qualified | Automotive-qualified variant with enhanced reliability testing; identical mechanical form factor | Preferred for automotive ECUs or safety-critical systems requiring AEC-Q200 compliance |
Compared with 1N5230B, the 1N4732A offers higher power and lower impedance but requires PCB layout changes, while BZX55-C4V7 matches the DO-35 footprint and regulation specs with added automotive qualification - making it a direct-fit upgrade path where qualification matters.
Availability
1N5230B is available at Aetrix Electronics and suitable for voltage reference generation, overvoltage protection, and current-regulated biasing applications requiring stable component supply across aerospace, industrial control, and medical instrumentation programs.
Supply support for 1N5230B 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 precision analog components for defense, aerospace, and industrial markets.
The 1N52xxB series was engineered for mission-critical voltage regulation in harsh environments, emphasizing thermal stability, low leakage, and mechanical robustness in legacy axial-lead packaging.
FAQ
What is the nominal Zener voltage and tolerance of the 1N5230B?
The 1N5230B has a nominal Zener voltage of 4.7 V with a guaranteed tolerance of ±5%, as indicated by the "B" suffix per JEDEC specification. This tolerance is verified at 20 mA test current and 25°C ambient, and applies across the full operating temperature range of –65°C to +175°C.
What package type and marking does the 1N5230B use?
1N5230B uses the DO-35 (DO-204AH) hermetically sealed glass axial-leaded package. The cathode is marked with a single black band on the glass body, and the full part number "1N5230B" is laser-marked or printed on the device surface per standard Microsemi labeling practice.
What is the maximum power dissipation and thermal resistance of the 1N5230B?
The 1N5230B has a maximum power dissipation of 500 mW at 25°C, derating linearly to zero at 175°C. Its thermal resistance is 250°C/W junction-to-lead (at 3/8″ lead length) and 310°C/W junction-to-ambient on FR4 with specified copper pad geometry.
How does the 1N5230B perform under temperature variation?
The 1N5230B exhibits a Zener voltage temperature coefficient of ±0.030 %/°C, measured between 25°C and 125°C at 20 mA. This low drift enables stable reference performance in wide-temperature applications such as downhole oilfield tools or avionics power supplies.
Is the 1N5230B suitable for high-reliability or radiation-exposed environments?
Yes - the 1N5230B is inherently radiation-hardened per MicroNote 050 and qualified to MIL-PRF-19500 screening levels (e.g., JAN, JANTX) when ordered with appropriate prefixes. Its glass-body DO-35 construction and nonsensitive ESD behavior further support deployment in space-grade and nuclear instrumentation systems.
1N5230B 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:
- ±5%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 19 Ohms
- Current - Reverse Leakage @ Vr:
- 50 µA @ 2 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)
1N5230B FAQ
1.How can I place an order for 1N5230B through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5230B 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 1N5230B reliable?
The price and inventory of 1N5230B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5230B is usually 5 days.
3.What payment methods are accepted for 1N5230B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5230B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5230B?
1N5230B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5230B 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 1N5230B?
For technical support, including 1N5230B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5230B requirements.
6.How does Aetrix verify that 1N5230B is sourced from the original manufacturer or authorized distributors?
All 1N5230B 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 1N5230B meets industry standards.
7.What is the process for return or replacement of 1N5230B?
All 1N5230B units undergo pre-shipment inspection (PSI). If there is an issue with 1N5230B, 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 1N5230B part is unused and in its original packaging.
Return procedure for 1N5230B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N5230B 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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