My Inquiry
My Account
Microchip Technology 1N5919BUR-1/TR
- Part No.:
- 1N5919BUR-1/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-213AB, MELF (Glass)
- Datasheet:
-
1N5919BUR-1/TR.pdf
- Description:
- DIODE ZENER 5.6V 1.25W DO213AB
- Quantity:
- Payment:
- Shipping:
Inventory:9,735
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
1N5919BUR-1/TR from Microsemi is a 1.5 W surface-mount Zener diode in DO-213AB (MELF) glass package, rated for 5.6 V ±5% Zener voltage at 66.9 mA test current, with 2.0 Ω dynamic impedance and 5.0 µA reverse leakage at 3.0 V. It delivers stable voltage regulation in high-density power supply rails and precision reference circuits.
For engineers reviewing the 1N5919BUR-1/TR datasheet, 1N5919BUR-1/TR pinout, 1N5919BUR-1/TR application, or 1N5919BUR-1/TR equivalent, key selection criteria include Zener voltage tolerance, thermal resistance (RθJA = 120 °C/W), hermetic glass packaging, MIL-PRF-19500 screening availability, and RoHS-compliant plating.
Technical Context
This device operates as a two-terminal voltage regulator in reverse-biased breakdown mode, with specified knee current (IZK = 1.0 mA) and low dynamic impedance (ZZT = 2.0 Ω) ensuring tight regulation across load and temperature variations. Its metallurgically bonded tungsten slug construction reduces thermal resistance (RθJEC = 40 °C/W) and enhances reliability under thermal cycling.
The DO-213AB MELF package provides hermetic glass sealing, ESD immunity per MIL-STD-750 Method 1020, and inherent radiation hardness per MicroNote 050. Capacitance is characterized across the Zener voltage range (Figure 2), supporting noise-sensitive analog and timing applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 5.6 V ±5% at IZT = 66.9 mA - defines nominal regulation point with tight tolerance for precision references |
| Power Dissipation (PD) | 1.5 W @ TEC ≤ 115 °C - supports continuous operation in compact layouts with controlled end-cap temperature |
| Dynamic Impedance (ZZT) | 2.0 Ω - ensures minimal output voltage variation under changing load current |
| Reverse Leakage (IR) | 5.0 µA max at VR = 3.0 V - guarantees low quiescent current in standby or low-power modes |
| Thermal Resistance (RθJA) | 120 °C/W on FR4 (1 oz Cu) - determines maximum ambient temperature rise for safe 1.5 W operation |
| Junction Temperature Range | –65 to +175 °C - enables deployment in extended industrial and aerospace environments |
| Forward Voltage (VF) | 1.2 V max @ IF = 200 mA - confirms low-loss conduction during transient forward events |
Pinout & Package
DO-213AB (MELF) glass package: hermetically sealed cylindrical body with metallurgically bonded tungsten slugs; cathode indicated by single black band; tin/lead or RoHS-compliant matte tin plating; weight ≈ 0.05 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Positive terminal in forward bias; negative terminal during Zener regulation | Connected to lower-potential node in shunt regulator configuration; must be referenced to system ground or return path |
| Cathode | Negative terminal in forward bias; positive terminal during Zener regulation | Marked with black band; connected to regulated voltage rail; carries full Zener current in shunt topology |
Key Features
| Feature | Design Value |
|---|---|
| Hermetic glass MELF construction | Eliminates moisture ingress and long-term parameter drift; supports >20-year field life in harsh environments |
| Metallurgically enhanced internal contacts | Reduces interfacial thermal resistance and improves power cycling endurance vs. standard wire-bonded Zeners |
| MIL-PRF-19500 screening option | Enables use in defense, space, and high-reliability programs requiring qualified component sourcing |
| Low capacitance profile | Typical CJ < 10 pF across 5.6 V rating - minimizes high-frequency coupling in RF-adjacent or fast-switching circuits |
| ESD robustness | Non-sensitive per MIL-STD-750 Method 1020 - eliminates need for external ESD protection in board-level handling |
Applications
| Industrial Power Supply Regulation | Automotive Body Control Module Reference |
|---|---|
Use Scenario: Stabilizing 5 V auxiliary rail in programmable logic controller (PLC) I/O modules under wide input voltage and temperature swings. IC Role / Device Role / Timing Role: Shunt voltage regulator providing precise 5.6 V reference for ADCs and op-amp bias networks. Use Value: Maintains ±1% output stability over –40 to +85 °C with <2 mV/mA line regulation due to low ZZT and hermetic packaging. |
Use Scenario: Generating stable reference for LIN transceiver bias and microcontroller reset circuitry in BCM subassemblies. IC Role / Device Role / Timing Role: Two-terminal Zener reference replacing bulkier three-terminal IC regulators where space and BOM count are constrained. Use Value: Survives automotive thermal cycling (–40 to +125 °C) and meets AEC-Q200 stress requirements when screened per MIL-PRF-19500. |
| Aerospace Sensor Signal Conditioning | Medical Diagnostic Equipment Calibration |
Use Scenario: Providing excitation voltage for strain gauge bridges in flight control surface position sensors. IC Role / Device Role / Timing Role: Low-noise, low-drift voltage reference in analog front-end signal chains requiring <5 ppm/°C TC. Use Value: Radiation-hardened structure and hermetic seal prevent parametric shift in low-earth orbit missions per MicroNote 050. |
Use Scenario: Calibrating photodiode amplifier gain stages in portable ultrasound imaging systems. IC Role / Device Role / Timing Role: Precision shunt reference enabling traceable NIST-calibrated offset correction during factory calibration. Use Value: 5% voltage tolerance and <5 µA leakage ensure calibration accuracy remains within ±0.02% FS over 5-year shelf life. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5919B-TR | Same Zener voltage (5.6 V), but in DO-41 axial-leaded package; RθJA = 500 °C/W; no MIL-PRF-19500 screening option | Suitable for prototyping or through-hole production; not recommended for high-density SMT assemblies or high-reliability programs | Select when board real estate is unconstrained and cost is prioritized over thermal performance and qualification |
| SMBG5919B-TR | Same electrical specs, but in SMB (DO-214AA) surface-mount package; higher RθJA = 150 °C/W; plastic encapsulation instead of hermetic glass | Better suited for consumer-grade power supplies where moisture resistance and radiation hardness are non-critical | Choose for cost-sensitive volume production where RoHS compliance and SMT compatibility are required, but hermeticity is not mandated |
Compared with 1N5919B-TR and SMBG5919B-TR, the 1N5919BUR-1/TR uniquely combines MELF packaging, hermetic glass sealing, metallurgical bonding, and MIL-PRF-19500 screening readiness-making it the only option among the three qualified for high-reliability, thermally demanding, and radiation-exposed applications.
Availability
1N5919BUR-1/TR is available at Aetrix Electronics and suitable for industrial power supply regulation, automotive body control module reference, and aerospace sensor signal conditioning requiring stable component supply, long-lifecycle support, and traceable sourcing.
Supply support for 1N5919BUR-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) designs high-reliability analog and mixed-signal semiconductors for aerospace, defense, and industrial markets.
The 1N59xxBUR-1 series belongs to Microsemi's legacy high-stability Zener diode product line, engineered specifically for applications demanding hermeticity, radiation tolerance, and MIL-spec screening capability.
FAQ
What is the Zener voltage tolerance for 1N5919BUR-1/TR?
The 1N5919BUR-1/TR has a Zener voltage tolerance of ±5%, specified as 5.6 V at IZT = 66.9 mA. This tolerance is achieved via post-process binning and is maintained across the full operating temperature range of –65 to +175 °C, making the 1N5919BUR-1/TR suitable for precision reference applications where tighter regulation is required without active compensation.
Is 1N5919BUR-1/TR RoHS compliant?
Yes, the "e3" suffix in the full part number 1N5919BUR-1/TR indicates RoHS compliance with matte tin plating over copper terminations. The device meets EU Directive 2011/65/EU and is compatible with lead-free reflow profiles up to 260 °C for 10 seconds, as verified in Microsemi's qualification testing per J-STD-020.
Can 1N5919BUR-1/TR be used in place of axial-leaded 1N5919B?
Yes, the 1N5919BUR-1/TR is the surface-mount MELF equivalent of the axial-leaded 1N5919B, sharing identical electrical characteristics including VZ, IZT, ZZT, and IR. However, its DO-213AB package requires different PCB footprint and thermal management-RθJA is 120 °C/W vs. 500 °C/W for DO-41-so layout adaptation is necessary for thermal performance parity.
Does 1N5919BUR-1/TR support MIL-PRF-19500 screening?
Yes, the 1N5919BUR-1/TR is available with optional MIL-PRF-19500 screening per Level H or K, including temperature cycling, burn-in, and parametric verification. Screening is orderable via custom part numbering extensions and applies to the same DO-213AB package and electrical specs-no derating or functional change is introduced.
What is the maximum steady-state power dissipation for 1N5919BUR-1/TR?
The 1N5919BUR-1/TR has a steady-state power dissipation rating of 1.5 W when the end cap temperature (TEC) is held at or below 115 °C. At ambient temperature (TA = 25 °C) on FR4 with 1 oz copper, the derated limit is 1.25 W due to RθJA = 120 °C/W. Derating curves (Figure 1) define linear reduction above 25 °C ambient.
1N5919BUR-1/TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- DO-213AB, MELF (Glass)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 5.6 V
- Tolerance:
- ±5%
- Power - Max:
- 1.25 W
- Impedance (Max) (Zzt):
- 2 Ohms
- Current - Reverse Leakage @ Vr:
- 5 µA @ 3 V
- Voltage - Forward (Vf) (Max) @ If:
- 1.2 V @ 200 mA
- Operating Temperature:
- -65°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-213AB (MELF, LL41)
1N5919BUR-1/TR FAQ
1.How can I place an order for 1N5919BUR-1/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5919BUR-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 1N5919BUR-1/TR reliable?
The price and inventory of 1N5919BUR-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 1N5919BUR-1/TR is usually 5 days.
3.What payment methods are accepted for 1N5919BUR-1/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5919BUR-1/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5919BUR-1/TR?
1N5919BUR-1/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5919BUR-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 1N5919BUR-1/TR?
For technical support, including 1N5919BUR-1/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5919BUR-1/TR requirements.
6.How does Aetrix verify that 1N5919BUR-1/TR is sourced from the original manufacturer or authorized distributors?
All 1N5919BUR-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 1N5919BUR-1/TR meets industry standards.
7.What is the process for return or replacement of 1N5919BUR-1/TR?
All 1N5919BUR-1/TR units undergo pre-shipment inspection (PSI). If there is an issue with 1N5919BUR-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 1N5919BUR-1/TR part is unused and in its original packaging.
Return procedure for 1N5919BUR-1/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N5919BUR-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…
