My Inquiry
My Account
Microchip Technology 1N4627UR-1/TR
- Part No.:
- 1N4627UR-1/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-213AA
- Datasheet:
-
1N4627UR-1/TR.pdf
- Description:
- DIODE ZENER 6.2V 500MW DO213AA
- Quantity:
- Payment:
- Shipping:
Inventory:4,025
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
1N4627UR-1/TR from Microsemi is a 500 mW, 6.2 V ±5% surface-mount Zener diode in DO-213AA (SOD-80) glass MELF package, metallurgically bonded for high-reliability regulation, with 5 Ω dynamic impedance at 250 mA test current and 5 µV/√Hz noise density, used in precision voltage reference and power supply feedback circuits.
For engineers reviewing the 1N4627UR-1/TR datasheet, 1N4627UR-1/TR pinout, 1N4627UR-1/TR application, or 1N4627UR-1/TR equivalent, key selection criteria include Zener voltage tolerance (±5%), low noise density (5 µV/√Hz), MIL-PRF-19500/435 qualification level (JAN/JANTXV/JANS available), thermal resistance (100 °C/W junction-to-end-cap), and hermetic glass packaging for stable operation across -65 °C to +175 °C.
Technical Context
This device operates as a reverse-biased voltage regulator with a nominal Zener voltage of 6.2 V at 250 mA test current (IZT), exhibiting a temperature coefficient of -0.010 to +0.050 %/°C and dynamic impedance (ZZT) of 1200 Ω - optimized for low-noise, stable reference generation in analog and mixed-signal systems.
Its DO-213AA glass MELF package provides hermetic sealing, ESD insensitivity per MIL-STD-750 Method 1020, and minimal capacitance (typical <2 pF), enabling use in high-frequency biasing and low-jitter timing references where parasitic effects must be minimized.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 6.2 V ±5% at IZT = 250 mA - defines precise regulation point for feedback loops and reference rails. |
| Power Dissipation | 500 mW at TC = 25 °C, derating linearly to zero at 175 °C - supports continuous operation in compact, thermally constrained PCB layouts. |
| Dynamic Impedance (ZZT) | 1200 Ω at IZT = 250 mA - ensures minimal output voltage variation under load transients in regulated supplies. |
| Noise Density (ND) | 5 µV/√Hz at IZT = 250 mA - enables low-noise voltage references critical for ADC/DAC biasing and sensor signal conditioning. |
| Reverse Leakage (IR) | 5.0 µA max at VR = 5.0 V - guarantees tight regulation onset and low quiescent current in standby modes. |
| Temp. Coefficient (αVZ) | -0.010 to +0.050 %/°C - allows predictable drift compensation in wide-temperature industrial and aerospace applications. |
| Junction Temp. Range | -65 °C to +175 °C - supports deployment in extreme-environment avionics, downhole tools, and military electronics. |
Pinout & Package
DO-213AA (SOD-80) glass MELF package: hermetically sealed, cylindrical, axial-symmetric surface-mount case with cathode band marking; terminals are end-cap metallized surfaces, solderable per MIL-STD-750 Method 2026.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Regulated output node | Connected to higher-potential rail; reverse-biased operation requires cathode > anode by ≥6.2 V for regulation. |
| Anode (unbanded end) | Reference ground node | Serves as circuit common; polarity reversal prevents conduction and invalidates regulation function. |
Key Features
| Feature | Design Value |
|---|---|
| Metallurgical bond construction | Eliminates interfacial delamination risk under thermal cycling, ensuring long-term stability in mission-critical power systems. |
| MIL-PRF-19500/435 qualification | Available at JAN, JANTX, JANTXV, and JANS levels - meets screening requirements for defense, space, and nuclear instrumentation. |
| Low noise density | 5 µV/√Hz at 6.2 V enables sub-LSB error in 16-bit+ data converters without external filtering. |
| Hermetic glass encapsulation | Prevents moisture ingress and parameter drift over 20+ years in humid or corrosive environments. |
| ESD insensitivity | Non-sensitive per MIL-STD-750 Method 1020 - eliminates need for handling precautions during SMT assembly. |
Applications
| High-Reliability Power Supply Feedback | Precision Analog Reference |
|---|---|
Use Scenario: Regulating output voltage in MIL-SPEC DC-DC converters for airborne radar subsystems. IC Role / Device Role / Timing Role: Zener reference element in TL431-based shunt regulator feedback network. Use Value: Maintains ±0.5% output accuracy over -55 °C to +125 °C due to stable 6.2 V Zener point and low αVZ. |
Use Scenario: Providing bias voltage for op-amp input stages in radiation-hardened telemetry front-ends. IC Role / Device Role / Timing Role: Low-noise voltage reference for PGA gain-setting networks. Use Value: 5 µV/√Hz noise density prevents degradation of SNR in 24-bit sigma-delta ADC signal chains. |
| Avionics Sensor Signal Conditioning | Downhole Instrumentation Biasing |
Use Scenario: Stabilizing excitation voltage for strain-gauge bridges in flight control surface position sensors. IC Role / Device Role / Timing Role: Temperature-compensated reference source for ratiometric measurement. Use Value: -0.010 to +0.050 %/°C αVZ enables <±0.1% total drift across full operating range without calibration. |
Use Scenario: Generating stable bias for piezoelectric pressure transducers in oil/gas well logging tools. IC Role / Device Role / Timing Role: High-temperature-stable Zener element in isolated analog front-end. Use Value: Operation up to +175 °C junction temperature ensures functionality in geothermal borehole environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CDLL4627-1 | Commercial-grade version of same die; RoHS-compliant matte-tin plating; no MIL qualification. | Lacks JAN/JANTXV/JANS screening; suitable for non-military industrial designs requiring lower cost and lead-free compliance. | Select CDLL4627-1 when MIL-PRF-19500/435 qualification is not required and RoHS compliance is mandatory. |
| 1N4627UR-1e3 | Identical electrical specs and DO-213AA package; RoHS-compliant (e3 suffix) variant of 1N4627UR-1/TR. | Same reliability level but uses annealed matte-tin plating instead of tin-lead; identical thermal and noise performance. | Choose 1N4627UR-1e3 when lead-free assembly is required and tin-lead solder is prohibited in final manufacturing. |
Compared with CDLL4627-1 and 1N4627UR-1e3, the 1N4627UR-1/TR offers full MIL-PRF-19500/435 qualification with tin-lead terminations, making it the only option qualified for JANS-level spaceflight applications where radiation hardness and screening traceability are mandatory.
Availability
1N4627UR-1/TR is available at Aetrix Electronics and suitable for high-reliability power supply feedback, precision analog reference, avionics sensor signal conditioning, and downhole instrumentation biasing requiring stable component supply across extended temperature and radiation environments.
Supply support for 1N4627UR-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, radiation-hardened, and mil-spec analog and power management components.
The 1N4627UR-1/TR belongs to Microsemi's legacy 1N46xxUR-1 Zener series designed specifically for defense, aerospace, and industrial applications demanding hermetic packaging, MIL qualification, and low-noise voltage regulation.
FAQ
What is the Zener voltage tolerance of the 1N4627UR-1/TR?
The 1N4627UR-1/TR has a nominal Zener voltage of 6.2 V with a standard tolerance of ±5%, as specified in the Electrical Characteristics table on page 4 of T4-LDS-0245 Rev. 2. This tolerance applies at IZT = 250 mA and TC = 25 °C, and is consistent across all qualification levels (JAN through JANS).
Is the 1N4627UR-1/TR RoHS compliant?
The 1N4627UR-1/TR is not RoHS compliant by default; RoHS compliance is indicated by the "e3" suffix (e.g., 1N4627UR-1e3). The "TR" suffix denotes tape-and-reel packaging only. For RoHS-compliant versions, specify 1N4627UR-1e3/TR or confirm compliance status with Aetrix Electronics prior to order.
What is the maximum Zener current (IZM) for the 1N4627UR-1/TR?
The maximum Zener current (IZM) for the 1N4627UR-1/TR is 40 mA, as listed in the Electrical Characteristics table. This value corresponds to the peak DC current the device can sustain continuously at rated power (500 mW) while maintaining regulation within specification limits.
Does the 1N4627UR-1/TR require heatsinking in typical PCB applications?
The 1N4627UR-1/TR does not require external heatsinking in standard FR4 layouts with recommended footprint, as its thermal resistance junction-to-end-cap is 100 °C/W and rated power is 500 mW. Derating begins at 125 °C case temperature, reaching zero dissipation at 175 °C - sufficient for most surface-mount applications without added thermal mass.
How is polarity marked on the 1N4627UR-1/TR package?
The 1N4627UR-1/TR uses a cathode band marking on the glass DO-213AA body - the banded end is the cathode and must be biased positively relative to the unbanded (anode) end for proper Zener regulation. This marking aligns with JEDEC-standard polarity identification for MELF devices.
1N4627UR-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):
- 6.2 V
- Tolerance:
- ±5%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 1200 Ohms
- Current - Reverse Leakage @ Vr:
- 5 µA @ 5 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
1N4627UR-1/TR FAQ
1.How can I place an order for 1N4627UR-1/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N4627UR-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 1N4627UR-1/TR reliable?
The price and inventory of 1N4627UR-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 1N4627UR-1/TR is usually 5 days.
3.What payment methods are accepted for 1N4627UR-1/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N4627UR-1/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N4627UR-1/TR?
1N4627UR-1/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N4627UR-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 1N4627UR-1/TR?
For technical support, including 1N4627UR-1/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N4627UR-1/TR requirements.
6.How does Aetrix verify that 1N4627UR-1/TR is sourced from the original manufacturer or authorized distributors?
All 1N4627UR-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 1N4627UR-1/TR meets industry standards.
7.What is the process for return or replacement of 1N4627UR-1/TR?
All 1N4627UR-1/TR units undergo pre-shipment inspection (PSI). If there is an issue with 1N4627UR-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 1N4627UR-1/TR part is unused and in its original packaging.
Return procedure for 1N4627UR-1/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N4627UR-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…
