My Inquiry
My Account
Microchip Technology 1N5258BUR-1/TR
- Part No.:
- 1N5258BUR-1/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-213AA
- Datasheet:
-
1N5258BUR-1/TR.pdf
- Description:
- DIODE ZENER 36V 500MW DO213AA
- Quantity:
- Payment:
- Shipping:
Inventory:7,045
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
1N5258BUR-1/TR from Microsemi is a 36 V, ±5% tolerance, 500 mW surface-mount Zener diode in DO-213AA (SOD-80) MELF package, designed for precision voltage regulation in power supply feedback loops, reference circuits, and overvoltage protection. It delivers 3.4 mA test current, 70 Ω dynamic impedance at IZT, and operates across –65 °C to +175 °C junction temperature.
For engineers reviewing the 1N5258BUR-1/TR datasheet, 1N5258BUR-1/TR pinout, 1N5258BUR-1/TR application, or 1N5258BUR-1/TR equivalent, key selection criteria include Zener voltage stability under varying load/temperature, low leakage (<0.1 µA @ 29 V), hermetic glass packaging for reliability, and compatibility with automated SMT assembly using EIA-481-B tape-and-reel delivery.
Technical Context
This device functions as a two-terminal shunt voltage regulator operating in reverse breakdown. Its metallurgically bonded glass construction ensures stable thermal resistance (RθJEC = 100 °C/W) and radiation hardness per MicroNote 050. The 36 V nominal Zener voltage exhibits a +0.093 %/°C temperature coefficient, optimized for mid-range voltage references where drift must be minimized without active compensation.
It is rated for 0.5 W steady-state dissipation at end-cap temperature <125 °C or ambient <50 °C on FR4 with 1 oz Cu. Forward voltage is capped at 1.1 V @ 200 mA, confirming standard silicon P-N junction behavior - not Schottky or avalanche-specific design.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 36 V ±5% @ 3.4 mA - defines precise regulation point for feedback networks and clamp thresholds |
| Power Dissipation PD | 0.5 W - limits continuous current to ~13.9 mA at 36 V; requires thermal derating above 50 °C ambient |
| Zener Impedance ZZT | 70 Ω @ IZT = 3.4 mA - determines output voltage variation under load transients |
| Reverse Leakage IR | <0.1 µA @ 29 V - ensures minimal quiescent current in high-impedance bias/reference paths |
| Junction Temp Range | –65 °C to +175 °C - supports operation in automotive under-hood, industrial motor control, and aerospace environments |
| Package | DO-213AA (SOD-80) MELF - hermetically sealed glass body with end-cap terminations for moisture resistance and reliability |
| Temp Coefficient αVZ | +0.093 %/°C - quantifies voltage drift; enables prediction of ±1.2% shift over 100 °C ΔT |
Pinout & Package
DO-213AA (SOD-80) MELF package: hermetically sealed cylindrical glass body with metallized end caps; cathode identified by single black band; RoHS-compliant matte-tin plating; weight 0.04 g; dimensions A = 1.60–1.70 mm (diameter), B = 3.30–3.70 mm (length).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Zener anode connection in reverse-bias configuration | Connected to regulated output node; polarity critical - banded end must be more positive than anode for regulation |
| Anode (unbanded end) | Zener cathode connection in reverse-bias configuration | Typically tied to ground or lower-potential rail; completes shunt path for excess current during overvoltage events |
Key Features
| Feature | Design Value |
|---|---|
| Metallurgically bonded glass construction | Enables hermetic sealing and intrinsic radiation hardness per MicroNote 050 - suitable for space-grade and high-reliability systems |
| ±5% Zener voltage tolerance (suffix "B") | Guarantees 34.2–37.8 V regulation window at 25 °C without binning or post-manufacture screening |
| MIL-PRF-19500 up-screening option | Supports qualification to military reliability standards (e.g., JANTXV level) when ordered with MQ/MX/MV suffixes |
| Low capacitance (typ. <2 pF) | Minimizes signal coupling and phase shift in RF bias networks and high-frequency reference circuits |
| ESD robustness (MIL-STD-750 Method 1020) | Withstands >4 kV HBM without parameter shift - eliminates need for external ESD protection in board-level designs |
Applications
| Switch-Mode Power Supply Feedback | Industrial Sensor Reference Voltage |
|---|---|
Use Scenario: Provides stable 36 V reference for optocoupler-based feedback in isolated DC-DC converters. IC Role / Device Role / Timing Role: Shunt regulator establishing error amplifier input threshold; absorbs transient energy during load steps. Use Value: Maintains ±1.5% output regulation over –40 °C to +105 °C ambient due to predictable αVZ and low IR. | Use Scenario: Supplies excitation voltage to bridge-based pressure sensors in factory automation PLC modules. IC Role / Device Role / Timing Role: Precision voltage source for ratiometric measurement; replaces higher-cost IC references where 5% tolerance suffices. Use Value: Eliminates drift-induced offset errors in 16-bit ADC systems via stable 36 V rail with <0.1 µA leakage. |
| Overvoltage Clamp for MCU I/O | High-Temperature Motor Control Bias |
Use Scenario: Protects 3.3 V or 5 V microcontroller GPIO pins from ESD and inductive kickback in industrial HMI panels. IC Role / Device Role / Timing Role: Fast-acting shunt clamp diverting surge current away from sensitive CMOS inputs. Use Value: Responds within nanoseconds with <2 pF capacitance and withstands >4 kV HBM per MIL-STD-750. | Use Scenario: Sets gate drive threshold for SiC MOSFETs in EV traction inverters operating at 150 °C case temperature. IC Role / Device Role / Timing Role: High-temp-stable bias generator for level-shifting circuits near power stages. Use Value: Functions reliably up to +175 °C junction temperature with no parameter degradation or parametric shift. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5258B-1 | Axial DO-35 package; same electrical specs but leaded form factor | Requires through-hole assembly; unsuitable for high-density SMT layouts | Select when legacy board repair or prototyping with breadboards is needed |
| BZX55-C36 | 36 V ±5%, 500 mW, DO-35 package; higher ZZT (100 Ω) and wider temp range (–65 °C to +175 °C) | Lacks MIL-PRF-19500 up-screening path and radiation hardness documentation | Choose for cost-sensitive commercial designs where military qualification is unnecessary |
Compared with 1N5258B-1 and BZX55-C36, the 1N5258BUR-1/TR offers SMT compatibility, documented radiation hardness, and direct MIL-PRF-19500 upgrade path - making it preferred for aerospace, defense, and high-reliability industrial control where hermeticity and long-term parameter stability are mandatory.
Availability
1N5258BUR-1/TR is available at Aetrix Electronics and suitable for switch-mode power supplies, industrial sensor interfaces, overvoltage protection circuits, and high-temperature motor control systems requiring stable component supply and traceable sourcing.
Supply support for 1N5258BUR-1/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 Corporation (now part of Microchip Technology) is a U.S.-based semiconductor company specializing in high-reliability analog, mixed-signal, and radiation-hardened components for aerospace, defense, and industrial markets.
The 1N52xxBUR-1 series belongs to Microsemi's legacy Zener regulator product line, engineered for applications demanding hermetic packaging, wide temperature operation, and compliance with military reliability standards like MIL-PRF-19500.
FAQ
What is the Zener voltage tolerance and test current for the 1N5258BUR-1/TR?
The 1N5258BUR-1/TR has a nominal Zener voltage of 36 V with ±5% tolerance (suffix "B") and is specified at a test current IZT of 3.4 mA. This tolerance is guaranteed across the full operating temperature range without additional binning, and the device maintains regulation stability even under transient load conditions due to its 70 Ω dynamic impedance.
Does the 1N5258BUR-1/TR support military-grade reliability screening?
Yes - the 1N5258BUR-1/TR can be ordered with reliability level suffixes (e.g., MQ, MX, MV) to meet MIL-PRF-19500 requirements. While the base commercial "1N5258BUR-1/TR" is not screened, its metallurgically bonded DO-213AA construction and process flow are qualified for up-screening to JANTXV and JANS levels per Microsemi's nomenclature guide.
What is the maximum reverse leakage current for the 1N5258BUR-1/TR, and at what voltage is it measured?
The 1N5258BUR-1/TR exhibits a maximum reverse leakage current of 0.1 µA, measured at a reverse voltage (VR) of 29 V. This ultra-low leakage ensures minimal power loss in high-impedance reference paths and preserves accuracy in precision analog circuits such as sensor excitation and ADC bias networks.
Can the 1N5258BUR-1/TR be used in high-temperature environments like automotive under-hood applications?
Yes - the 1N5258BUR-1/TR is rated for junction temperatures from –65 °C to +175 °C and features a DO-213AA glass package with metallurgical bonding that resists thermal cycling and moisture ingress. Its +0.093 %/°C temperature coefficient allows predictable voltage drift modeling, making it suitable for engine control units and transmission control modules.
Is the 1N5258BUR-1/TR RoHS compliant, and what plating is used on its terminals?
Yes - the 1N5258BUR-1/TR is RoHS compliant (e3 suffix), with annealed matte-tin plating on both end caps. This plating meets MIL-STD-750 Method 2026 for solderability and supports reflow profiles up to 260 °C for 10 seconds, ensuring robust attachment in automated SMT assembly lines.
1N5258BUR-1/TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- DO-213AA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 36 V
- Tolerance:
- ±5%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 70 Ohms
- Current - Reverse Leakage @ Vr:
- 100 nA @ 27 V
- Voltage - Forward (Vf) (Max) @ If:
- 1.1 V @ 200 mA
- Operating Temperature:
- -65°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-213AA
1N5258BUR-1/TR FAQ
1.How can I place an order for 1N5258BUR-1/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5258BUR-1/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 1N5258BUR-1/TR reliable?
The price and inventory of 1N5258BUR-1/TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5258BUR-1/TR is usually 5 days.
3.What payment methods are accepted for 1N5258BUR-1/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5258BUR-1/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5258BUR-1/TR?
1N5258BUR-1/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5258BUR-1/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 1N5258BUR-1/TR?
For technical support, including 1N5258BUR-1/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5258BUR-1/TR requirements.
6.How does Aetrix verify that 1N5258BUR-1/TR is sourced from the original manufacturer or authorized distributors?
All 1N5258BUR-1/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 1N5258BUR-1/TR meets industry standards.
7.What is the process for return or replacement of 1N5258BUR-1/TR?
All 1N5258BUR-1/TR units undergo pre-shipment inspection (PSI). If there is an issue with 1N5258BUR-1/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 1N5258BUR-1/TR part is unused and in its original packaging.
Return procedure for 1N5258BUR-1/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N5258BUR-1/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
Tech Hub
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
