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Microchip Technology 1N5232B/TR
- Part No.:
- 1N5232B/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
1N5232B/TR.pdf
- Description:
- DIODE ZENER 5.6V 500MW DO204AH
- Quantity:
- Payment:
- Shipping:
Inventory:2,836
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Product details
Overview
1N5232B/TR 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/TR datasheet, 1N5232B/TR pinout, 1N5232B/TR application, or 1N5232B/TR equivalent, this page delivers verified electrical specs, thermal derating behavior, Zener temperature coefficient (+0.038 %/°C), RoHS-compliant plating options, and tape-and-reel packaging details per EIA-296.
Technical Context
This discrete Zener diode operates in reverse breakdown to maintain stable output voltage across varying load currents and temperatures. Its 5.6 V nominal Zener voltage is specified at 20 mA test current (IZT), with 11 Ω dynamic impedance (ZZT) measured at IZK = 0.25 mA and 5.0 Ω at IZT.
It features a positive temperature coefficient of +0.038 %/°C, indicating voltage increases with rising junction temperature - critical for biasing stability in temperature-sensitive references. The device is rated for -65°C to +175°C operation and exhibits minimal capacitance per Figure 2.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Zener Voltage (VZ) | 5.6 V @ 20 mA - defines regulated output level under standard test conditions |
| Zener Tolerance | ±5% (B suffix) - ensures voltage consistency across production lots for reliable reference design |
| Power Dissipation | 500 mW at 25°C - sets maximum continuous power handling before thermal derating applies |
| Zener Impedance (ZZT) | 11 Ω @ IZT - low dynamic resistance enables tight regulation under varying load current |
| Temperature Coefficient | +0.038 %/°C - quantifies voltage drift with temperature; supports thermal compensation planning |
| Operating Temperature | -65°C to +175°C - suitable for aerospace, industrial, and high-reliability environments |
| Forward Voltage | ≤1.5 V @ 200 mA - ensures predictable conduction in forward-biased fault or clamp scenarios |
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 circuit ground or lower potential node during Zener operation |
| Cathode | Banded lead | Connected to regulated voltage node; must be held positive relative to anode for breakdown conduction |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC-registered 1N52xxB series | Industry-standard compliance ensures interoperability and sourcing continuity across suppliers |
| RoHS-compliant option (e3 suffix) | Meets environmental regulations without performance trade-offs in voltage regulation or thermal stability |
| Low capacitance (typ. <2 pF) | Minimizes signal coupling and noise injection in high-frequency or RF-adjacent bias networks |
| Radiation-hardened per MicroNote 050 | Validated for use in space-grade and high-radiation terrestrial applications without parameter shift |
| Nonsensitive to ESD (MIL-STD-750 Method 1020) | Eliminates need for external ESD protection during board handling and assembly |
Applications
| Reference Voltage Source | Overvoltage Clamp |
|---|---|
Use Scenario: Providing stable 5.6 V bias for op-amp input stages or ADC reference dividers in battery-powered instrumentation. IC Role / Device Role / Timing Role: Zener diode operating in reverse breakdown to deliver fixed reference voltage independent of supply variation. Use Value: ±5% tolerance and +0.038 %/°C TC enable sub-1% total error over 0–70°C without trimming. | Use Scenario: Protecting microcontroller I/O pins from transient surges exceeding 5.6 V in industrial sensor interfaces. IC Role / Device Role / Timing Role: Shunt clamping device that conducts excess current when input voltage exceeds VZ. Use Value: 500 mW power rating and low ZZT ensure fast response and minimal voltage overshoot during 100 ns transients. |
| Power Supply Feedback | Current Source Bias |
Use Scenario: Setting feedback threshold in isolated DC-DC converter secondary-side regulation loops. IC Role / Device Role / Timing Role: Precision voltage reference element in optocoupler-based feedback path. Use Value: Stable VZ across -65°C to +175°C allows reliable operation in wide-temperature power supplies. | Use Scenario: Establishing constant base-emitter voltage for transistor-based constant-current sinks in LED drivers. IC Role / Device Role / Timing Role: Fixed-voltage drop element defining emitter bias point in two-transistor current mirror. Use Value: Low dynamic impedance (11 Ω) maintains current accuracy despite supply ripple up to 100 mVpp. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4734A | 5.6 V, ±5%, 1 W power rating, DO-41 package - higher power but larger footprint and different thermal resistance | Preferred where >500 mW dissipation or PCB layout allows larger axial package | Select 1N4734A only if thermal margin requires >0.5 W rating; verify lead-length thermal derating impact on FR4 board |
| BZX55C5V6 | 5.6 V, ±5%, 500 mW, DO-35 package - same form factor but tighter process control and tighter VZ distribution (±2% available) | Better suited for high-yield automated assembly where tighter lot-to-lot VZ consistency is required | Choose BZX55C5V6 when statistical voltage clustering improves calibration yield; note different marking and screening options |
Compared with 1N5232B/TR, 1N4734A offers higher power headroom but requires layout revision, while BZX55C5V6 matches the DO-35 footprint and power rating but provides tighter VZ distribution and broader global availability - both require validation of temperature coefficient and dynamic impedance in target operating conditions.
Availability
1N5232B/TR is available at Aetrix Electronics and suitable for precision voltage reference, overvoltage protection, and power supply feedback applications requiring stable component supply, long-term obsolescence management, and RoHS-compliant procurement.
Supply support for 1N5232B/TR 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 1N52xxB series was designed for military, industrial, and space applications demanding guaranteed parametric limits, extended temperature operation, and JEDEC-standardized Zener regulation performance.
FAQ
What is the Zener voltage tolerance for 1N5232B/TR?
The "B" suffix in 1N5232B/TR specifies a ±5% tolerance on the nominal 5.6 V Zener voltage, meaning the actual VZ at 20 mA test current falls between 5.32 V and 5.88 V across all units. This tolerance is guaranteed per JEDEC specification and verified during 100% testing, making 1N5232B/TR suitable for applications where moderate voltage accuracy is acceptable without post-production trimming.
Does 1N5232B/TR support RoHS compliance?
Yes, 1N5232B/TR is available in RoHS-compliant configuration when ordered with the "e3" suffix (e.g., 1N5232B-e3/TR). The device uses annealed matte-tin plating per MIL-STD-750 Method 2026 and meets lead-free soldering requirements with 260°C/10 s maximum solder temperature. Standard versions use tin-lead plating unless otherwise specified.
What is the thermal resistance of 1N5232B/TR on a standard PCB?
When mounted on an FR4 PCB with 1 oz copper, 4 mm² copper pads, and 1 mm track width (25 mm length), the thermal resistance of 1N5232B/TR is 310°C/W junction-to-ambient. At 25°C ambient, this limits steady-state power dissipation to 0.48 W - below its 0.5 W rating - requiring derating above 50°C lead temperature per Figure 1 in the datasheet.
How does the temperature coefficient affect 1N5232B/TR in precision circuits?
The 1N5232B/TR has a +0.038 %/°C temperature coefficient, meaning its Zener voltage increases by approximately 2.13 mV/°C over its 5.6 V nominal value. In precision reference designs operating across -40°C to +85°C, this results in ~266 mV total drift - necessitating compensation techniques or selection of lower-TC alternatives like 1N5235B (+0.050 %/°C) only if drift direction aligns with system error budget.
Can 1N5232B/TR be used in surface-mount designs?
No, 1N5232B/TR is a through-hole DO-35 axial-leaded device and not compatible with SMT assembly. For surface-mount equivalents, Microsemi offers the MLL5232B in DO-213AA (MELF) package - identical electrical specs and tolerance, but requiring reflow-compatible layout and solder profile validation.
1N5232B/TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- DO-204AH, DO-35, Axial
- Packaging:
- Tape & Reel (TR)
- 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/TR FAQ
1.How can I place an order for 1N5232B/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5232B/TR 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/TR reliable?
The price and inventory of 1N5232B/TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5232B/TR is usually 5 days.
3.What payment methods are accepted for 1N5232B/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5232B/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5232B/TR?
1N5232B/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5232B/TR 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/TR?
For technical support, including 1N5232B/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5232B/TR requirements.
6.How does Aetrix verify that 1N5232B/TR is sourced from the original manufacturer or authorized distributors?
All 1N5232B/TR 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/TR meets industry standards.
7.What is the process for return or replacement of 1N5232B/TR?
All 1N5232B/TR units undergo pre-shipment inspection (PSI). If there is an issue with 1N5232B/TR, 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/TR part is unused and in its original packaging.
Return procedure for 1N5232B/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N5232B/TR 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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