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Microchip Technology 1N5233B
- Part No.:
- 1N5233B
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
1N5233B.pdf
- Description:
- DIODE ZENER 6V 500MW DO204AH
- Quantity:
- Payment:
- Shipping:
Inventory:9,705
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Product details
Overview
1N5233B from Microsemi is a 6.0 V, ±5% tolerance, 500 mW glass axial-lead Zener diode in DO-35 (DO-204AH) package, rated for 20 mA test current and 7.0 Ω dynamic impedance at IZT, operating from –65°C to +175°C. It serves as a precision voltage reference or shunt regulator in low-power analog circuits, power supply feedback paths, and overvoltage protection.
For engineers reviewing the 1N5233B datasheet, 1N5233B pinout, 1N5233B application, or 1N5233B equivalent, key selection factors include its 6.0 V nominal Zener voltage with ±5% tolerance, 7.0 Ω Zener impedance at 20 mA, +0.038 %/°C temperature coefficient, and DO-35 hermetic glass package suitable for high-reliability industrial and aerospace environments.
Technical Context
This device operates in reverse-bias breakdown mode to maintain stable voltage across its terminals under varying load and temperature conditions. Its 7.0 Ω Zener impedance at 20 mA ensures minimal voltage deviation during current fluctuations, while the +0.038 %/°C temperature coefficient indicates predictable, positive drift above 25°C.
The 1N5233B is JEDEC-registered and qualified per MIL-PRF-19500 screening levels when ordered with appropriate prefixes (e.g., MV, MX). It features nonsensitive ESD behavior (MIL-STD-750 Method 1020), minimal capacitance (<2.0 pF typical), and inherent radiation hardness per MicroNote 050.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Zener Voltage (VZ) | 6.0 V at 20 mA test current - defines regulation setpoint for feedback or reference use |
| Zener Tolerance | ±5% (B suffix) - guarantees VZ between 5.7 V and 6.3 V at 25°C |
| Zener Impedance (ZZT) | 7.0 Ω at IZT = 20 mA - determines output voltage stability under load transients |
| Power Dissipation | 500 mW at 25°C - sets maximum continuous power before thermal derating applies |
| Operating Temperature | –65°C to +175°C - enables deployment in extended industrial, automotive, and aerospace environments |
| Temperature Coefficient (αVZ) | +0.038 %/°C - quantifies positive VZ drift with rising ambient temperature |
| Reverse Current (IR) | 50 μA max at 4.8 V - specifies leakage level below breakdown threshold |
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 (unbanded end) | Current sink in Zener mode | Connected to lower-potential node; carries reverse current during regulation |
| Cathode (banded end) | Regulated output node | Connected to circuit node requiring stabilized 6.0 V reference or clamping |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC-registered Zener diode | Ensures standardized electrical performance and interchangeability across qualified suppliers |
| Hermetic DO-35 glass package | Provides long-term reliability and moisture resistance in harsh environments |
| Inherent radiation hardness | Validated per MicroNote 050 - suitable for space-qualified and high-radiation applications |
| Nonsensitive to ESD | Qualified per MIL-STD-750 Method 1020 - eliminates need for external ESD protection in handling |
| Minimal junction capacitance | <2.0 pF typical - preserves high-frequency signal integrity in RF biasing and timing circuits |
Applications
| Power Supply Feedback | Overvoltage Clamp |
|---|---|
|
Use Scenario: Stabilizing output voltage in linear regulators or switching converter feedback loops. IC Role / Device Role / Timing Role: Shunt voltage reference providing precise 6.0 V setpoint to error amplifier input. Use Value: Enables ±5% output regulation accuracy with low dynamic impedance (7.0 Ω) minimizing loop gain variation. |
Use Scenario: Protecting downstream ICs from transient voltage spikes on 5 V or 6 V rails. IC Role / Device Role / Timing Role: Fast-acting shunt clamp that conducts above 6.3 V to limit peak voltage. Use Value: Limits overshoot within 50 ns response time due to low junction capacitance and fast avalanche onset. |
| Reference Voltage Source | Temperature-Stable Biasing |
|
Use Scenario: Generating stable bias points for op-amp comparators or sensor signal conditioning. IC Role / Device Role / Timing Role: Precision DC reference delivering 6.0 V ±5% across –65°C to +175°C. Use Value: Maintains reference accuracy with +0.038 %/°C drift - predictable compensation for thermal design. |
Use Scenario: Setting bias currents in RF amplifiers where thermal stability affects gain flatness. IC Role / Device Role / Timing Role: Zener-based current source with known αVZ enabling first-order temperature compensation. Use Value: Allows calculation of bias drift using measured αVZ, supporting deterministic thermal modeling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4735A | 6.2 V nominal, ±5%, 1.0 W power rating, DO-41 package | Higher power handling but larger footprint and different thermal resistance (125 °C/W vs. 250 °C/W) | Select when >500 mW dissipation is required; verify PCB pad layout and derating curves |
| BZX55C6V2 | 6.2 V nominal, ±5%, 500 mW, DO-35 package, 10 Ω ZZT | Same package and power, but higher impedance and slightly higher voltage | Acceptable for non-critical references; avoid where <7.0 Ω ZZT is needed for tight regulation |
Compared with 1N5233B, the 1N4735A offers higher power capacity but requires board rework for DO-41 mounting, while the BZX55C6V2 matches the DO-35 form factor but delivers less precise regulation due to higher Zener impedance and 0.2 V voltage offset - making 1N5233B optimal for space-constrained, low-drift 6.0 V reference designs.
Availability
1N5233B is available at Aetrix Electronics and suitable for power supply feedback, overvoltage protection, and precision reference voltage generation requiring stable component supply across industrial control, aerospace subsystems, and test instrumentation programs.
Supply support for 1N5233B 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 aerospace-grade components.
The 1N5233B belongs to Microsemi's legacy 1N52xxB Zener series designed for military, avionics, and industrial applications demanding wide temperature operation, hermetic packaging, and guaranteed parametric limits.
FAQ
What is the nominal Zener voltage and tolerance of the 1N5233B?
The 1N5233B has a nominal Zener voltage of 6.0 V at 20 mA test current with a guaranteed tolerance of ±5% (B suffix), meaning its actual breakdown voltage falls between 5.7 V and 6.3 V at 25°C. This tolerance is validated per JEDEC standards and applies across the full operating temperature range when used within specified power and current limits.
What package type and marking does the 1N5233B use?
The 1N5233B uses a DO-35 (DO-204AH) hermetically sealed glass axial-leaded package with cathode identified by a single band. The device is marked with its full part number "1N5233B" on the glass body. Lead finish is either tin-lead or RoHS-compliant matte-tin, qualified per MIL-STD-750 Method 2026 for solderability.
How does the temperature coefficient affect the 1N5233B's regulation voltage?
The 1N5233B has a temperature coefficient (αVZ) of +0.038 %/°C, meaning its Zener voltage increases predictably with rising temperature. At 125°C, VZ rises approximately 3.8% above its 25°C value - a total increase of ~0.23 V - enabling accurate thermal compensation in bias networks and reference circuits.
What is the maximum power dissipation and derating behavior of the 1N5233B?
The 1N5233B is rated for 500 mW at 25°C ambient or lead temperature (TL < 50°C at 3/8″ from body). Power must be linearly derated above 25°C at 4.0 mW/°C (250 °C/W thermal resistance junction-to-lead), reaching zero dissipation at 150°C. On FR4 PCBs with standard copper pads, derating begins at 25°C with 4.8 mW/°C slope.
Is the 1N5233B suitable for high-reliability or radiation-exposed environments?
Yes - the 1N5233B is inherently radiation-hardened per MicroNote 050 and qualifies for MIL-PRF-19500 screening (JAN, JANTX, JANTXV, JANS) when ordered with appropriate prefixes. Its hermetic DO-35 glass package and ESD-nonsensitive construction (MIL-STD-750 Method 1020) make it suitable for aerospace, defense, and nuclear instrumentation applications.
1N5233B 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 V
- Tolerance:
- ±5%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 7 Ohms
- Current - Reverse Leakage @ Vr:
- 5 µA @ 3.5 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)
1N5233B FAQ
1.How can I place an order for 1N5233B through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5233B 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 1N5233B reliable?
The price and inventory of 1N5233B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5233B is usually 5 days.
3.What payment methods are accepted for 1N5233B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5233B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5233B?
1N5233B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5233B 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 1N5233B?
For technical support, including 1N5233B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5233B requirements.
6.How does Aetrix verify that 1N5233B is sourced from the original manufacturer or authorized distributors?
All 1N5233B 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 1N5233B meets industry standards.
7.What is the process for return or replacement of 1N5233B?
All 1N5233B units undergo pre-shipment inspection (PSI). If there is an issue with 1N5233B, 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 1N5233B part is unused and in its original packaging.
Return procedure for 1N5233B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N5233B 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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