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Microchip Technology 1N5263B/TR
- Part No.:
- 1N5263B/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
1N5263B/TR.pdf
- Description:
- DIODE ZENER 56V 500MW DO204AH
- Quantity:
- Payment:
- Shipping:
Inventory:7,270
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Product details
Overview
1N5263B/TR from Microsemi is a 56 V, ±5% tolerance, 500 mW glass axial-lead Zener diode in DO-35 (DO-204AH) package, rated for 2.2 mA test current and 150 Ω dynamic impedance at IZK = 0.25 mA, used for precision voltage regulation in low-power analog reference and overvoltage protection circuits.
For engineers reviewing the 1N5263B/TR datasheet, 1N5263B/TR pinout, 1N5263B/TR application, or 1N5263B/TR equivalent, key selection criteria include Zener voltage accuracy, thermal stability across -65°C to +175°C, low leakage (<0.1 μA at VR), and compatibility with manual or wave-soldering processes per MIL-STD-750.
Technical Context
This discrete Zener diode operates in reverse breakdown to maintain stable output voltage under varying load and temperature conditions. Its DO-35 glass package provides hermetic sealing and inherent radiation hardness per MicroNote 050, with cathode band polarity marking and tin-lead or RoHS-compliant matte-tin plating.
It delivers regulated voltage with ±5% tolerance (B suffix), 0.096%/°C temperature coefficient, and minimal capacitance - critical for noise-sensitive biasing and reference applications where stability over wide temperature ranges is required without active compensation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Zener Voltage | 56 V @ 2.2 mA test current - defines primary regulation point for low-current references |
| Zener Tolerance | ±5% (B suffix) - ensures predictable voltage window for design margining |
| Power Dissipation | 500 mW at 25°C - sets maximum continuous power handling before thermal derating |
| Zener Impedance | 1300 Ω @ IZK = 0.25 mA - indicates dynamic resistance affecting regulation stiffness at low currents |
| Reverse Leakage | ≤0.1 μA @ rated VR - guarantees minimal error current in high-impedance reference nodes |
| Temp. Coefficient | +0.096 %/°C - quantifies voltage drift magnitude per degree Celsius change |
| Operating Temp. | -65°C to +175°C - supports deployment in aerospace, downhole, and industrial environments |
Pinout & Package
Hermetically sealed DO-35 (DO-204AH) 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 cathode reference ground | Connected to circuit ground or lower-potential node during Zener operation |
| Cathode | Zener regulation terminal / voltage reference output | Banded end; connected to unregulated input to deliver stable 56 V output |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC-registered 1N52xxB series | Industry-standard footprint and electrical behavior for drop-in sourcing and legacy design reuse |
| Inherent radiation hardness | Validated per MicroNote 050 - enables use in space-qualified and nuclear instrumentation systems |
| Nonsensitive to ESD | Qualified per MIL-STD-750 Method 1020 - eliminates need for external ESD protection in handling and assembly |
| RoHS-compliant option | e3 suffix available - meets environmental compliance without performance trade-offs |
| Stable regulation over broad current range | Specified from IZK = 0.25 mA to IZT = 2.2 mA - supports ultra-low-power biasing |
Applications
| Voltage Reference for Op-Amp Circuits | Overvoltage Clamp in Sensor Interfaces |
|---|---|
Use Scenario: Providing stable 56 V reference to precision op-amp feedback networks in industrial signal conditioning modules. IC Role / Device Role / Timing Role: Passive voltage reference element establishing fixed gain or offset calibration point. Use Value: ±5% tolerance and +0.096%/°C TC ensure <±1.2% total drift over -40°C to +85°C operating range. | Use Scenario: Clamping transient surges on 48 V DC sensor supply lines in automotive body control units. IC Role / Device Role / Timing Role: Standby-mode overvoltage protection device shunting excess energy to ground. Use Value: 500 mW power rating and -65°C to +175°C operating range support robust surge absorption without thermal runaway. |
| Low-Power Biasing in RF Front-Ends | Calibration Reference in Portable Test Equipment |
Use Scenario: Generating stable gate bias for LDMOS amplifiers in battery-powered RF transceivers. IC Role / Device Role / Timing Role: Zener-regulated DC bias source minimizing current draw while maintaining amplifier linearity. Use Value: 0.1 μA max reverse leakage preserves battery life; DO-35 axial form factor simplifies hand-solder rework. | Use Scenario: Serving as traceable 56 V calibration standard in handheld multimeters and portable oscilloscopes. IC Role / Device Role / Timing Role: Primary voltage reference for internal ADC/DAC offset trimming and self-test routines. Use Value: JEDEC registration and tight B-suffix tolerance enable metrology-grade repeatability across production batches. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4744A | 15 V nominal, 1 W rating, DO-41 package, ±5% tolerance | Higher power, lower voltage - unsuitable for 56 V reference but preferred for higher-current clamping | Select when >500 mW dissipation or PCB layout accommodates larger DO-41 footprint |
| BZX55-C56 | 56 V nominal, ±5% tolerance, 500 mW, DO-35 package, different Zener impedance profile (130 Ω vs. 1300 Ω) | Lower dynamic impedance improves regulation at higher currents but exhibits different tempco behavior | Prefer for applications requiring tighter regulation under variable load, not for ultra-low-current biasing |
Compared with 1N4744A and BZX55-C56, the 1N5263B/TR offers optimized low-current regulation stability and radiation-hardened construction, making it uniquely suitable for aerospace, downhole, and high-reliability analog reference designs where DO-35 form factor and JEDEC compliance are mandatory.
Availability
1N5263B/TR is available at Aetrix Electronics and suitable for voltage reference generation, overvoltage protection, low-power biasing, and calibration standards requiring stable component supply across extended temperature and radiation environments.
Supply support for 1N5263B/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 high-voltage analog components for aerospace, defense, and industrial markets.
The 1N52xxB series was designed specifically for precision voltage regulation in mission-critical analog systems where long-term stability, wide temperature operation, and JEDEC-standard compatibility are essential.
FAQ
What is the Zener voltage tolerance of the 1N5263B/TR?
The 1N5263B/TR has a nominal Zener voltage of 56 V with a guaranteed tolerance of ±5%, indicated by the "B" suffix per JEDEC specification. This tolerance applies under standard test conditions at 25°C with 2.2 mA test current and ensures predictable regulation window for design margining in analog reference circuits.
Does the 1N5263B/TR require heatsinking in typical applications?
No, the 1N5263B/TR does not require external heatsinking in standard applications due to its 500 mW power rating and low thermal resistance (250 °C/W junction-to-lead at 3/8″ lead length). It operates reliably up to +175°C ambient when mounted per specified FR4 board layout with 4 mm² copper pads, making heatsinks unnecessary for most low-power regulation tasks.
Is the 1N5263B/TR RoHS compliant?
Yes, the 1N5263B/TR is available in RoHS-compliant configuration with "e3" suffix (e.g., 1N5263B-e3/TR), featuring annealed matte-tin plating qualified per MIL-STD-750 Method 2026. Standard versions use tin-lead plating; RoHS compliance must be explicitly ordered via the e3 suffix.
What is the maximum reverse leakage current for the 1N5263B/TR?
The maximum reverse leakage current for the 1N5263B/TR is 0.1 μA measured at its rated reverse voltage (VR), as specified in the Electrical Characteristics table. This low leakage supports high-impedance node stability in precision reference and calibration applications where error current must be minimized.
Can the 1N5263B/TR be used in space-grade applications?
Yes, the 1N5263B/TR is inherently radiation-hardened per MicroNote 050 and available in military screening levels (JAN, JANTX, JANTXV, JANS) with appropriate prefix codes. Its DO-35 glass package, wide -65°C to +175°C operating range, and ESD insensitivity make it suitable for space-grade analog reference and protection functions.
1N5263B/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):
- 56 V
- Tolerance:
- ±5%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 150 Ohms
- Current - Reverse Leakage @ Vr:
- 100 nA @ 43 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)
1N5263B/TR FAQ
1.How can I place an order for 1N5263B/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5263B/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 1N5263B/TR reliable?
The price and inventory of 1N5263B/TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5263B/TR is usually 5 days.
3.What payment methods are accepted for 1N5263B/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5263B/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5263B/TR?
1N5263B/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5263B/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 1N5263B/TR?
For technical support, including 1N5263B/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5263B/TR requirements.
6.How does Aetrix verify that 1N5263B/TR is sourced from the original manufacturer or authorized distributors?
All 1N5263B/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 1N5263B/TR meets industry standards.
7.What is the process for return or replacement of 1N5263B/TR?
All 1N5263B/TR units undergo pre-shipment inspection (PSI). If there is an issue with 1N5263B/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 1N5263B/TR part is unused and in its original packaging.
Return procedure for 1N5263B/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N5263B/TR 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
-
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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