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Microchip Technology 1N5232B
- Part No.:
- 1N5232B
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
1N5232B.pdf
- Description:
- DIODE ZENER 5.6V 500MW DO204AH
- Quantity:
- Payment:
- Shipping:
Inventory:6,098
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Product details
Overview
1N5232B from Microsemi is a 5.6 V, ±5% tolerance, 500 mW glass axial-lead Zener diode in DO-35 (DO-204AH) package, rated for 20 mA test current and 11 Ω dynamic impedance at IZT, used for precision voltage regulation in low-power analog reference and overvoltage protection circuits.
For engineers reviewing the 1N5232B datasheet, 1N5232B pinout, 1N5232B application, or 1N5232B equivalent, this page delivers verified electrical specs, thermal derating behavior, temperature coefficient, packaging details, and direct alternatives with documented parameter differences.
Technical Context
The 1N5232B operates as a two-terminal voltage reference device with sharp reverse-breakdown knee, specified at 20 mA test current (IZT) and characterized for stable regulation across –65°C to +175°C ambient range. Its 11 Ω zener impedance (ZZT) at IZT ensures minimal output voltage variation under load changes.
It exhibits a positive temperature coefficient of +0.038 %/°C, indicating increasing Zener voltage with rising junction temperature - a critical factor when designing temperature-stable references or compensating circuits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Zener Voltage (VZ) | 5.6 V at 20 mA test current - defines primary regulation point for biasing and reference applications |
| Zener Tolerance | ±5% (B suffix) - guarantees VZ between 5.32 V and 5.88 V at 25°C, enabling predictable circuit margining |
| Power Dissipation | 500 mW at 25°C - sets maximum continuous power handling before thermal derating begins |
| Zener Impedance (ZZT) | 11 Ω at IZT - determines AC ripple rejection and load regulation sensitivity in shunt regulator designs |
| Temperature Coefficient (αVZ) | +0.038 %/°C - quantifies VZ drift per degree rise, essential for high-accuracy temperature-compensated references |
| Max Reverse Current (IR) | 5 μA at 4.8 V - defines leakage threshold below which regulation is not active, critical for low-power standby modes |
| Forward Voltage (VF) | 1.5 V max at 200 mA - establishes forward conduction behavior during transient overvoltage or polarity-reversal events |
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 | Reference ground node | Connected to circuit common; reverse-biased operation requires cathode at higher potential |
| Cathode | Zener regulation terminal | Banded end; must be held at least 5.6 V above anode to enter breakdown and regulate voltage |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC-registered 1N52xxB series | Industry-standard part numbering and electrical definition ensuring cross-manufacturer compatibility and procurement continuity |
| Hermetic glass DO-35 package | Enables operation from –65°C to +175°C with proven reliability in harsh environments including aerospace and industrial controls |
| Radiation-hardened construction | Inherently radiation-tolerant per MicroNote 050 - suitable for space-qualified or high-reliability systems without additional shielding |
| Low capacitance design | Typical junction capacitance < 5 pF (per Figure 2) - preserves signal integrity in RF-coupled or high-frequency sensing paths |
Applications
| Voltage Reference for Op-Amp Biasing | Overvoltage Clamp in Sensor Interface |
|---|---|
Use Scenario: Providing stable 5.6 V reference to bias input stages of precision instrumentation amplifiers in data acquisition systems. IC Role / Device Role / Timing Role: Shunt voltage reference establishing fixed DC operating point independent of supply rail fluctuations. Use Value: Enables sub-10 mV offset stability over temperature due to tight ±5% tolerance and low 11 Ω ZZT limiting current-induced drift. | Use Scenario: Protecting 5 V microcontroller ADC inputs from ESD or transient surges exceeding 5.6 V in automotive cabin sensors. IC Role / Device Role / Timing Role: Passive overvoltage clamp diverting excess energy to ground before damage occurs. Use Value: Responds within nanoseconds with 5 μA IR at 4.8 V, ensuring clamping activation well below destructive thresholds of downstream ICs. |
| Low-Power Power Supply Regulation | Temperature-Compensated Reference Generator |
Use Scenario: Regulating unregulated 9 V battery-derived rails down to 5.6 V for ultra-low-power IoT sensor nodes. IC Role / Device Role / Timing Role: Simple shunt regulator dissipating excess power as heat while maintaining constant output voltage. Use Value: Delivers 500 mW capability with 250 °C/W thermal resistance - supports up to ~10 mA load current at room temperature without heatsinking. | Use Scenario: Combining with a negative-tempco component (e.g., thermistor or complementary diode) to build zero-drift 5.6 V reference for calibration equipment. IC Role / Device Role / Timing Role: Positive-tempco voltage source enabling cancellation of system-level thermal drift. Use Value: Predictable +0.038 %/°C coefficient allows precise compensation design - validated across –65°C to +175°C operating range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4734A (ON Semiconductor) | 6.2 V nominal, ±5%, 1.0 W power rating, DO-41 package | Higher power and different voltage - unsuitable for direct 5.6 V replacement but useful where higher headroom or dissipation is needed | Select only if circuit requires 6.2 V regulation or >500 mW capability; requires PCB footprint change due to DO-41 vs DO-35 |
| BZX55-C5V6 (Vishay) | 5.6 V nominal, ±5%, 500 mW, DO-35 package, 10 Ω ZZT at 5 mA | Same voltage and package, but tested at lower 5 mA IZT - results in higher effective impedance under typical 20 mA operating conditions | Acceptable for cost-sensitive designs where tighter ZZT spec is not required; verify regulation stability at actual load current |
Compared with 1N5232B, the 1N4734A offers higher power and voltage but requires mechanical redesign, while the BZX55-C5V6 matches voltage and package but trades off dynamic impedance performance at full-rated current - making 1N5232B optimal for precision 20 mA-regulated references.
Availability
1N5232B is available at Aetrix Electronics and suitable for voltage reference design, overvoltage protection, and low-power shunt regulation requiring stable component supply in industrial control, aerospace subsystems, and medical instrumentation.
Supply support for 1N5232B 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 designed specifically for applications demanding JEDEC-standardized, temperature-stable Zener references in hermetic glass packages - targeting mission-critical voltage regulation where long-term parametric consistency is mandatory.
FAQ
What is the nominal Zener voltage and tolerance of the 1N5232B?
The 1N5232B has a nominal Zener voltage of 5.6 V with a guaranteed tolerance of ±5% at 25°C and 20 mA test current. This means its actual breakdown voltage falls between 5.32 V and 5.88 V under standard test conditions, as confirmed in Microsemi's official datasheet revision D (2005).
What package type does the 1N5232B use, and what are its key mechanical features?
The 1N5232B uses the DO-35 (DO-204AH) hermetically sealed glass axial-leaded package. It features tin-lead or RoHS-compliant matte-tin plating, cathode identification via a color band, and is rated for soldering at 260°C for 10 seconds - all verified in Microsemi's mechanical specifications.
How does the temperature coefficient of the 1N5232B affect its performance in precision circuits?
The 1N5232B has a temperature coefficient of +0.038 %/°C, meaning its Zener voltage increases by approximately 2.13 mV per °C rise in junction temperature. This behavior is critical when designing temperature-stable references - it enables intentional compensation using negative-tempco elements, as documented in Microsemi's Note 3.
What is the maximum power dissipation of the 1N5232B, and how does it derate with temperature?
The 1N5232B is rated for 500 mW at 25°C, with linear derating to zero at 175°C. Its thermal resistance is 250 °C/W junction-to-lead (at 3/8″ lead length), meaning it can sustain ~10 mA load current at room temperature before exceeding safe junction limits - values confirmed in the Maximum Ratings table.
Is the 1N5232B suitable for high-reliability or radiation-exposed environments?
Yes - the 1N5232B is inherently radiation-hardened per MicroNote 050 and qualified for operation from –65°C to +175°C. Its hermetic glass DO-35 construction and MIL-PRF-19500 screening options (e.g., JANTXV) make it suitable for aerospace, defense, and nuclear instrumentation applications.
1N5232B 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):
- 5.6 V
- Tolerance:
- ±5%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 11 Ohms
- Current - Reverse Leakage @ Vr:
- 5 µA @ 3 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)
1N5232B FAQ
1.How can I place an order for 1N5232B through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5232B 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 1N5232B reliable?
The price and inventory of 1N5232B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5232B is usually 5 days.
3.What payment methods are accepted for 1N5232B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5232B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5232B?
1N5232B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5232B 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 1N5232B?
For technical support, including 1N5232B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5232B requirements.
6.How does Aetrix verify that 1N5232B is sourced from the original manufacturer or authorized distributors?
All 1N5232B 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 1N5232B meets industry standards.
7.What is the process for return or replacement of 1N5232B?
All 1N5232B units undergo pre-shipment inspection (PSI). If there is an issue with 1N5232B, 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 1N5232B part is unused and in its original packaging.
Return procedure for 1N5232B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N5232B 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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