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Microchip Technology 1N5234A
- Part No.:
- 1N5234A
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
1N5234A.pdf
- Description:
- DIODE ZENER 6.2V 500MW DO204AH
- Quantity:
- Payment:
- Shipping:
Inventory:6,404
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Product details
Overview
1N5234A from Microsemi is a 500 mW glass axial-lead Zener diode with nominal Zener voltage of 6.2 V at 20 mA test current, ±10% tolerance (A suffix), 7 Ω dynamic impedance at IZK = 0.25 mA, and temperature coefficient of +0.045 %/°C - used for precision low-power voltage regulation in bias networks, reference supplies, and overvoltage protection circuits.
For engineers reviewing the 1N5234A datasheet, 1N5234A pinout, 1N5234A application, or 1N5234A equivalent, key selection criteria include its DO-35 package compatibility, stable regulation across -65°C to +175°C, low 5 μA maximum reverse leakage at 4.8 V, and suitability for space-constrained through-hole designs requiring JEDEC-registered reliability.
Technical Context
This device operates as a two-terminal voltage reference, conducting in reverse breakdown when cathode voltage exceeds anode by ≥6.2 V. Its Zener knee is sharp (verified via dual-point impedance testing), and it exhibits minimal capacitance (<2.5 pF typical) due to small junction area and glass encapsulation.
The 1N5234A is rated for 0.5 W steady-state dissipation at 25°C with 250 °C/W junction-to-lead thermal resistance (3/8″ lead length), derating linearly above 50°C lead temperature. It is RoHS-compliant when ordered with "e3" suffix and nonsensitive to ESD per MIL-STD-750 Method 1020.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Zener Voltage | 6.2 V @ 20 mA - defines regulated output level under standard test conditions |
| Zener Tolerance | ±10% (A suffix) - sets absolute voltage accuracy band for production design margins |
| Zener Impedance | 7.0 Ω @ IZK = 0.25 mA - determines regulation stiffness under light-load or transient conditions |
| Max Reverse Current | 5.0 μA @ 4.8 V - specifies leakage-induced error in high-impedance reference nodes |
| Power Dissipation | 500 mW at 25°C - establishes maximum continuous power handling before thermal derating applies |
| Operating Temperature | -65°C to +175°C - enables use in aerospace, downhole, and industrial environments without derating |
| Temperature Coefficient | +0.045 %/°C - quantifies voltage drift magnitude per degree Celsius change in ambient |
Pinout & Package
DO-35 (DO-204AH) hermetically sealed glass axial-leaded package with cathode indicated by colored 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 | Forward conduction terminal / Zener reference ground node | Connected to circuit ground or lowest potential point in shunt regulator topology |
| Cathode | Reverse breakdown terminal / regulated output node | Banded end; connects to input supply rail to clamp voltage at 6.2 V ±10% |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC-registered 1N52xx series | Guarantees standardized electrical limits and mechanical interchangeability across manufacturers |
| Sharp Zener knee verification | Ensures stable, predictable breakdown behavior via dual-point dynamic impedance testing |
| Low 5 μA IR @ VR = 4.8 V | Minimizes loading error in high-resistance bias networks and precision references |
| Radiation-hardened construction | Inherently radiation-tolerant per MicroNote 050 - suitable for space-grade applications |
| Nonsensitive to ESD | No special handling required per MIL-STD-750 Method 1020 - simplifies assembly and field service |
Applications
| Reference Voltage Source | Overvoltage Clamp |
|---|---|
|
Use Scenario: Providing stable 6.2 V reference for op-amp comparators and ADC voltage dividers in sensor signal conditioning modules. IC Role / Device Role / Timing Role: Shunt voltage reference establishing precise threshold for analog-to-digital conversion. Use Value: Enables ±10 mV absolute accuracy in 12-bit systems despite supply variation, using only passive components and no active regulation. |
Use Scenario: Protecting microcontroller I/O pins from transient surges on 5 V logic rails in industrial control panels. IC Role / Device Role / Timing Role: Passive clamping element limiting voltage excursion to ≤6.2 V during ESD or inductive kick events. Use Value: Prevents latch-up and gate oxide damage without adding propagation delay or requiring external drive circuitry. |
| Power Supply Bias Network | Temperature-Stable Oscillator Bias |
|
Use Scenario: Setting collector current in discrete transistor amplifiers where supply rejection and thermal stability are critical. IC Role / Device Role / Timing Role: Zener-biased current source defining quiescent operating point in linear amplifier stages. Use Value: Maintains <±2% current variation over -40°C to +85°C due to +0.045 %/°C αVZ and low thermal resistance. |
Use Scenario: Establishing fixed bias voltage for crystal oscillator sustaining amplifiers in timing modules. IC Role / Device Role / Timing Role: Low-noise DC reference stabilizing gain and startup margin in Pierce oscillator configurations. Use Value: Reduces frequency drift by minimizing VDD-dependent transconductance variation in CMOS inverter-based oscillators. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4735A | Same 6.2 V nominal, ±5% tolerance (B suffix), higher 10 Ω ZZT @ IZK, DO-41 package (larger footprint) | Higher precision but requires PCB layout change due to larger DO-41 body and longer leads | Select when tighter voltage tolerance and higher surge capability outweigh board space constraints |
| BZX55C6V2 | 6.2 V nominal, ±5% tolerance, 10 Ω Zener impedance, DO-35 package, but lower 400 mW rating and narrower -65°C to +150°C range | Not qualified for extended temperature operation or radiation environments per MicroNote 050 | Choose for cost-sensitive commercial applications where full military-grade specs are unnecessary |
Compared with 1N5234A, 1N4735A offers improved voltage accuracy but demands more PCB real estate, while BZX55C6V2 reduces cost and size at the expense of temperature range, radiation hardness, and long-term reliability in harsh environments.
Availability
1N5234A is available at Aetrix Electronics and suitable for voltage reference design, overvoltage protection, and bias network stabilization requiring stable component supply across aerospace, industrial instrumentation, and medical electronics programs.
Supply support for 1N5234A 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, RF, and radiation-hardened components for defense, aerospace, and industrial markets.
The 1N52xx series was designed specifically for ruggedized, low-power voltage regulation in mission-critical systems where long-term stability, wide temperature operation, and JEDEC-standard interchangeability are mandatory.
FAQ
What is the Zener voltage tolerance of the 1N5234A?
The 1N5234A has a nominal Zener voltage of 6.2 V with ±10% tolerance, as designated by the "A" suffix per Microsemi's documentation. This means the actual measured breakdown voltage falls between 5.58 V and 6.82 V at 20 mA test current and 25°C ambient temperature. The 1N5234A is not rated for tighter tolerances like ±5% (B suffix) or ±1% (D suffix); those require different part numbers in the same family.
Can the 1N5234A be used in surface-mount designs?
No, the 1N5234A is exclusively packaged in the axial-leaded DO-35 (DO-204AH) glass case and is not a surface-mount device. For SMT equivalents, Microsemi offers the MLL5234A in DO-213AA (MELF) package - identical electrical specs but with cylindrical surface-mount geometry. Substituting 1N5234A into an SMT footprint would require mechanical adaptation and is not recommended.
What is the maximum reverse leakage current for the 1N5234A?
The 1N5234A has a maximum reverse leakage current (IR) of 5.0 μA when measured at 4.8 V (0.8 × VZ), per the Electrical Characteristics table on page 1 of the Microsemi datasheet. This value is guaranteed across the full operating temperature range and reflects worst-case leakage in high-impedance reference applications where even nanoamp-level errors matter.
Does the 1N5234A meet RoHS requirements?
Yes, the 1N5234A meets RoHS requirements when ordered with the "e3" suffix (e.g., 1N5234Ae3), indicating annealed matte-tin plating compliant with EU Directive 2011/65/EU. Standard 1N5234A parts use tin-lead plating; RoHS compliance is not automatic and must be explicitly specified in the order code per Microsemi's packaging guidelines.
What is the thermal resistance of the 1N5234A?
The 1N5234A has a junction-to-lead thermal resistance of 250 °C/W when measured with 3/8″ (10 mm) lead length from the glass body, and 310 °C/W junction-to-ambient when mounted on FR4 with specified copper pad geometry. These values define how rapidly heat transfers from the silicon junction to the environment and directly impact safe continuous power dissipation above 25°C.
1N5234A 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):
- 6.2 V
- Tolerance:
- ±10%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 7 Ohms
- Current - Reverse Leakage @ Vr:
- 5 µA @ 3.8 V
- Voltage - Forward (Vf) (Max) @ If:
- 1.5 V @ 200 mA
- Operating Temperature:
- -65°C ~ 175°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AH (DO-35)
1N5234A FAQ
1.How can I place an order for 1N5234A through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5234A 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 1N5234A reliable?
The price and inventory of 1N5234A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5234A is usually 5 days.
3.What payment methods are accepted for 1N5234A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5234A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5234A?
1N5234A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5234A 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 1N5234A?
For technical support, including 1N5234A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5234A requirements.
6.How does Aetrix verify that 1N5234A is sourced from the original manufacturer or authorized distributors?
All 1N5234A 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 1N5234A meets industry standards.
7.What is the process for return or replacement of 1N5234A?
All 1N5234A units undergo pre-shipment inspection (PSI). If there is an issue with 1N5234A, 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 1N5234A part is unused and in its original packaging.
Return procedure for 1N5234A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N5234A Tags
-
MMBZ5240B-7-F
Diodes Incorporated
-
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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