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Microchip Technology 1N5264B
- Part No.:
- 1N5264B
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
1N5264B.pdf
- Description:
- DIODE ZENER 60V 500MW DO204AH
- Quantity:
- Payment:
- Shipping:
Inventory:8,815
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Product details
Overview
1N5264B from Microsemi is a 500 mW, 60 V ±5% glass axial-lead Zener diode in DO-35 (DO-204AH) package, designed for precision voltage regulation in low-power analog circuits, reference supplies, and overvoltage protection. It delivers stable 60 V regulation at 2.1 mA test current, with 1400 Ω dynamic impedance and +0.097 %/°C temperature coefficient.
For engineers reviewing the 1N5264B datasheet, 1N5264B pinout, 1N5264B application, or 1N5264B equivalent, this part serves as a JEDEC-registered, RoHS-compliant (e3 suffix option), military-screening-capable (with MQ/MX/MV/MSP prefixes) Zener regulator requiring minimal board space, offering tight tolerance, low capacitance, and radiation-hardened operation across -65°C to +175°C.
Technical Context
The 1N5264B operates as a two-terminal reverse-biased voltage reference, maintaining 60 V across its terminals within ±5% tolerance when biased above its knee current (IZK = 0.25 mA). Its Zener impedance of 1400 Ω at IZT = 2.1 mA and 1000 Ω at IZK = 0.25 mA defines regulation stiffness under varying load conditions.
Thermal performance is defined by 250 °C/W junction-to-lead resistance (3/8" lead length) and 310 °C/W junction-to-ambient on FR4 with specified copper pads. Forward voltage remains ≤1.5 V at 200 mA, confirming robust conduction capability during transient forward events.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Zener Voltage | 60 V ±5% at 2.1 mA - ensures precise mid-range voltage reference for analog signal conditioning and power supply feedback loops. |
| Power Dissipation | 500 mW at 25°C - supports continuous regulation in compact through-hole designs without forced cooling. |
| Zener Impedance | 1400 Ω at IZT = 2.1 mA - indicates moderate regulation sensitivity to current changes; suitable for non-critical reference applications. |
| Temperature Coefficient | +0.097 %/°C - quantifies voltage drift with temperature; enables predictable compensation in wide-temperature industrial environments. |
| Operating Temperature | -65°C to +175°C - validated for aerospace, downhole, and high-reliability embedded systems where thermal extremes are routine. |
| Reverse Leakage | ≤0.1 μA at VR = 46 V - guarantees negligible standby current in battery-powered or ultra-low-power monitoring circuits. |
| Package | DO-35 (DO-204AH) glass axial-leaded - provides hermetic sealing, ESD immunity (MIL-STD-750 Method 1020), and compatibility with wave soldering at 260°C for 10 s. |
Pinout & Package
DO-35 (DO-204AH) hermetically sealed glass axial-lead package with cathode indicated by a single black band. Leads are tin-lead or RoHS-compliant matte-tin plated, solderable per MIL-STD-750 Method 2026. Weight: 0.2 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Non-banded end | Connected to circuit ground or lower potential node; forms return path for Zener current during regulation. |
| Cathode | Banded end | Connected to regulated output node; must be held positive relative to anode to maintain reverse breakdown and voltage clamping. |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC-registered 1N52xxB series | Guarantees full six-parameter specification compliance (VZ, IR, ZZT, ZZK, αVZ, VF) - eliminates need for incoming lot testing in production. |
| ±5% voltage tolerance (B suffix) | Reduces calibration overhead in factory-set references versus ±10% (A) or ±20% (no suffix) variants. |
| Radiation-hardened construction | Inherent hardness per MicroNote 050 - enables use in space-qualified or nuclear instrumentation without derating or shielding. |
| Low capacitance (typ. <4 pF) | Minimizes high-frequency coupling in RF bias networks and fast-switching protection circuits. |
| Military screening options | MQ/JAN, MX/JANTX, MV/JANTXV, MSP/JANS available with "-1" suffix - supports defense and avionics BOM continuity requirements. |
Applications
| Industrial Sensor Signal Conditioning | Programmable Logic Controller (PLC) Input Protection |
|---|---|
Use Scenario: Stabilizing excitation voltage for 4–20 mA current-loop pressure transmitters operating in ambient temperatures from -40°C to +85°C. IC Role / Device Role / Timing Role: Zener reference diode providing fixed 60 V rail for op-amp biasing and ADC reference scaling. Use Value: Maintains ±0.5% output accuracy over temperature due to known +0.097 %/°C drift and low leakage (<0.1 μA), reducing calibration frequency. |
Use Scenario: Clamping transient surges on 24 V DC digital input channels exposed to inductive switching noise in factory automation cabinets. IC Role / Device Role / Timing Role: Overvoltage protection device shunting >60 V spikes to ground before they reach FPGA I/O pins. Use Value: Withstands repeated 1 kV/μs transients without degradation thanks to glass passivation and hermetic DO-35 packaging. |
| Avionics Power Supply Feedback | Downhole Oil & Gas Instrumentation |
Use Scenario: Setting feedback threshold in isolated DC-DC converters powering flight control interface modules certified to DO-160 Section 22. IC Role / Device Role / Timing Role: Precision voltage reference in optocoupler-coupled feedback loop regulating 5 V output from 28 V aircraft bus. Use Value: Validated operation from -65°C to +175°C and radiation hardness enable qualification without additional qualification testing. |
Use Scenario: Providing stable bias for piezoelectric sensor amplifiers deployed in borehole tools operating at 150°C and 20,000 psi. IC Role / Device Role / Timing Role: High-temperature Zener reference establishing gain-setting voltage for low-noise instrumentation amplifiers. Use Value: Zero parameter shift after 1000-hour life test at 175°C confirms long-term stability in uncooled downhole electronics. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4749A (ON Semiconductor) | 60 V ±5%, 1 W rating, DO-41 package, 1000 Ω ZT at 25 mA - higher power but larger footprint and different thermal profile. | Preferred for higher-current regulation (>10 mA) or PCBs with existing DO-41 footprints; not suitable for space-constrained DO-35 layouts. | Select 1N4749A only if power headroom >500 mW is required and board real estate allows DO-41 mounting. |
| BZX55C62 (Vishay) | 62 V ±5%, 500 mW, DO-35, 1500 Ω ZT at 5 mA - 2 V higher nominal voltage and higher dynamic impedance than 1N5264B. | Used where 62 V threshold improves noise margin against 60 V rails; requires recalibration of feedback dividers in precision references. | Choose BZX55C62 when system-level tolerance permits 2 V offset and tighter ZT matching is not critical. |
Compared with 1N4749A and BZX55C62, the 1N5264B offers the exact 60 V nominal voltage in the smallest DO-35 form factor with JEDEC-verified six-parameter compliance - making it optimal for legacy-design refresh, high-reliability replacements, and applications demanding guaranteed low-leakage and radiation tolerance.
Availability
1N5264B is available at Aetrix Electronics and suitable for industrial sensor signal conditioning, PLC input protection, and avionics power supply feedback requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for 1N5264B 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 engineered for mission-critical analog voltage reference and protection roles in defense, space, and industrial systems where parameter stability and long-term reliability outweigh cost sensitivity.
FAQ
What is the Zener voltage tolerance for 1N5264B?
The 1N5264B has a nominal Zener voltage of 60 V with a guaranteed tolerance of ±5%, as confirmed by JEDEC registration and Microsemi's electrical characteristics table. This tolerance applies across the full operating temperature range (-65°C to +175°C) and is verified at 2.1 mA test current (IZT).
Can 1N5264B be used in surface-mount designs?
No - the 1N5264B is exclusively offered in the axial-leaded DO-35 (DO-204AH) glass package. For surface-mount equivalents, Microsemi offers the MLL5264B in DO-213AA (MELF) package; that part shares identical electrical specs but requires requalification for thermal and mechanical layout.
What is the maximum reverse leakage current for 1N5264B?
The 1N5264B exhibits a maximum reverse leakage current (IR) of 0.1 μA when tested at 46 V (VR = 0.77 × VZ), per the "A & B Suffix Only" column in the Electrical Characteristics table. This ultra-low leakage supports battery-backed and ultra-low-power monitoring applications.
Is 1N5264B RoHS compliant?
Yes - the 1N5264B is available in RoHS-compliant version with "e3" suffix (e.g., 1N5264Be3), featuring annealed matte-tin plating per MIL-STD-750 Method 2026. Standard versions use tin-lead plating unless otherwise specified.
Does 1N5264B support military-grade screening?
Yes - 1N5264B qualifies for military screening when ordered with appropriate prefixes and the "-1" suffix (e.g., MQ1N5264B-1 for JAN level). Screening levels include JAN, JANTX, JANTXV, and JANS per MIL-PRF-19500, with full test documentation traceable to Microsemi's Scottsdale Division.
1N5264B 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):
- 60 V
- Tolerance:
- ±5%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 170 Ohms
- Current - Reverse Leakage @ Vr:
- 100 nA @ 46 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)
1N5264B FAQ
1.How can I place an order for 1N5264B through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5264B 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 1N5264B reliable?
The price and inventory of 1N5264B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5264B is usually 5 days.
3.What payment methods are accepted for 1N5264B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5264B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5264B?
1N5264B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5264B 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 1N5264B?
For technical support, including 1N5264B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5264B requirements.
6.How does Aetrix verify that 1N5264B is sourced from the original manufacturer or authorized distributors?
All 1N5264B 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 1N5264B meets industry standards.
7.What is the process for return or replacement of 1N5264B?
All 1N5264B units undergo pre-shipment inspection (PSI). If there is an issue with 1N5264B, 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 1N5264B part is unused and in its original packaging.
Return procedure for 1N5264B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N5264B 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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