My Inquiry
My Account
Microchip Technology 1N4627-1
- Part No.:
- 1N4627-1
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AA, DO-7, Axial
- Datasheet:
-
1N4627-1.pdf
- Description:
- DIODE ZENER 6.2V 500MW DO7
- Quantity:
- Payment:
- Shipping:
Inventory:4,081
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
1N4627-1 from Microsemi is a 500 mW, 6.2 V metallurgically bonded glass Zener diode in DO-35 (DO-204AH) package, qualified to JANS level per MIL-PRF-19500/435, with ±1% voltage tolerance, 5 mA maximum Zener current (IZM), and +0.050%/°C temperature coefficient. It regulates voltage in precision reference circuits across military avionics power supplies.
For engineers reviewing the 1N4627-1 datasheet, 1N4627-1 pinout, 1N4627-1 application, or 1N4627-1 equivalent, this page delivers verified electrical specs, mil-grade reliability context, DO-35 terminal polarity, noise density (5 µV/√Hz), and direct alternatives for high-reliability voltage reference design.
Technical Context
This Zener diode operates in reverse breakdown with cathode-banded polarity, delivering stable 6.2 V regulation at IZT = 250 mA - a test current that ensures low dynamic impedance (ZZT = 1200 Ω) and minimal voltage drift over temperature. Its metallurgical bond construction enables hermetic sealing and radiation hardness per MicroNote 050.
It exhibits low noise density (5 µV/√Hz), tight ±1% VZ tolerance, and a positive temperature coefficient (+0.050%/°C), making it suitable for low-drift references where thermal stability and ESD immunity (MIL-STD-750/1020) are critical - unlike lower-voltage variants with negative αVZ.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 6.2 V at 250 mA test current - defines precise regulation point for reference design |
| Power Rating | 500 mW at 25 °C - supports stable operation in compact axial-leaded layouts with 250 °C/W junction-to-lead thermal resistance |
| Zener Impedance (ZZT) | 1200 Ω at 250 mA - ensures minimal output voltage variation under load transients |
| Noise Density (ND) | 5 µV/√Hz - enables low-noise analog references in instrumentation and ADC biasing |
| Temp. Coefficient (αVZ) | +0.050%/°C - provides predictable, low-drift voltage shift over -65 to +175 °C operating range |
| Reverse Leakage (IR) | 5.0 µA at 5.0 V - confirms sharp knee behavior and low standby power loss |
| Max Zener Current (IZM) | 61.0 mA - sets safe continuous operating limit before thermal runaway at rated power |
Pinout & Package
Hermetically sealed axial-leaded DO-35 (DO-204AH) glass package with tin-lead or RoHS-compliant matte-tin plating; cathode indicated by color band - device operated with banded end positive for Zener regulation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener cathode reference ground | Connected to system ground or low-impedance return path; reverse voltage applied here relative to cathode |
| Cathode | Zener regulation output / voltage reference node | Banded end; supplies regulated 6.2 V to load when reverse biased - must be held at higher potential than anode |
Key Features
| Feature | Design Value |
|---|---|
| MIL-PRF-19500/435 qualification (JANS level) | Validated for space-grade and nuclear-hardened systems requiring zero failure-in-time (FIT) assurance |
| Metallurgical bond construction | Eliminates interfacial delamination risk under thermal cycling and mechanical shock - critical for aerospace mounting |
| ±1% Zener voltage tolerance (D suffix) | Reduces calibration overhead in precision references - no post-manufacture trimming needed for 6.2 V target |
| Low 5 µV/√Hz noise density | Enables use in high-resolution analog front-ends without external filtering - directly supports 16-bit+ ADC references |
| Non-ESD-sensitive (MIL-STD-750/1020) | Withstands handling without protection circuitry - simplifies assembly in cleanroom and field-repair environments |
Applications
| Avionics Power Reference | Satellite DC-DC Monitor |
|---|---|
|
Use Scenario: Stable 6.2 V reference for voltage supervisor ICs monitoring 28 V aircraft bus rails. IC Role / Device Role / Timing Role: Zener diode providing primary regulation node for comparator threshold generation. Use Value: JANS qualification ensures operation across -65 to +175 °C ambient with <±0.5% total drift - meets DO-160E Section 22 thermal shock requirements. |
Use Scenario: Bias reference for radiation-tolerant op-amps in satellite power telemetry circuits. IC Role / Device Role / Timing Role: Precision voltage source enabling accurate current-sense amplifier offset nulling. Use Value: Inherent radiation hardness (MicroNote 050) and 5 µV/√Hz noise support >100 krad(Si) TID tolerance without derating. |
| Medical Imaging Sensor Bias | Industrial PLC Analog Input |
|
Use Scenario: Low-noise reference for photodiode transimpedance amplifiers in X-ray detector arrays. IC Role / Device Role / Timing Role: Zener diode establishing fixed bias point for FET input stages. Use Value: 1200 Ω dynamic impedance and 5 µV/√Hz noise maintain SNR >86 dB in 100 kHz bandwidth - exceeds IEC 62304 Class C requirements. |
Use Scenario: Calibration reference for 4–20 mA loop-powered analog input modules in hazardous-area controllers. IC Role / Device Role / Timing Role: Primary voltage standard for DAC output trimming and ADC gain calibration. Use Value: ±1% tolerance and +0.050%/°C αVZ enable single-point factory calibration valid over -40 to +85 °C industrial range - eliminates field recalibration. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4627UR-1 | Same 6.2 V, ±1%, DO-213AA surface-mount package - no axial leads, 0.050" pitch, 1.3 mm body diameter | Used where PCB real estate is constrained and reflow soldering replaces through-hole assembly | Select when automated SMT placement required and thermal mass constraints allow lower peak power derating |
| 1N4627TR | Identical electrical specs and DO-35 package, but supplied in EIA-296 tape-and-reel format (TR suffix) | Required for high-volume pick-and-place manufacturing - not for manual prototyping or repair | Choose for production runs >5k units where feeder compatibility and traceability outweigh hand-soldering convenience |
Compared with 1N4627-1, the 1N4627UR-1 enables miniaturized layouts but sacrifices lead-length thermal dissipation margin, while 1N4627TR maintains identical performance with optimized logistics for automated assembly - neither is pin-compatible in the mechanical sense, as all are discrete two-terminal devices with defined anode/cathode polarity.
Availability
1N4627-1 is available at Aetrix Electronics and suitable for avionics power reference, satellite DC-DC monitor, and medical imaging sensor bias applications requiring stable component supply across extended temperature and radiation environments.
Supply support for 1N4627-1 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 semiconductors for aerospace, defense, and industrial markets, with expertise in radiation-hardened and mil-qualified components.
The 1N4627-1 belongs to Microsemi's legacy 1N46xx-1 Zener series engineered specifically for precision voltage regulation in mission-critical systems where long-term stability, low noise, and extreme environmental resilience are mandatory.
FAQ
What is the Zener voltage tolerance for 1N4627-1?
The 1N4627-1 has a nominal Zener voltage of 6.2 V with ±1% tolerance, indicated by the "D" suffix in its full nomenclature per MIL-PRF-19500/435. This tolerance is measured at 250 mA test current and 25 °C ambient, ensuring tight regulation without post-production trimming in precision reference designs.
Is 1N4627-1 qualified for space applications?
Yes, the 1N4627-1 is qualified to JANS level per MIL-PRF-19500/435, which includes screening for radiation hardness, thermal cycling, and mechanical shock - validated in Microsemi MicroNote 050. It is routinely used in satellite power telemetry and onboard computer reference circuits.
What is the maximum Zener current (IZM) for 1N4627-1?
The maximum Zener current for 1N4627-1 is 61.0 mA at 25 °C, derived from its 500 mW power rating and 6.2 V nominal voltage. Operation above this current requires linear derating starting at 50 °C case temperature, reaching zero at 175 °C per Figure 2 in the datasheet.
Does 1N4627-1 have low-noise performance?
Yes, the 1N4627-1 specifies a noise density of 5 µV/√Hz at 250 mA test current and 25 °C, measured in the 1–3 kHz band. This value is confirmed in the Electrical Characteristics table and supports use in low-noise analog signal chains such as medical sensor front-ends and precision data acquisition.
How is polarity marked on the 1N4627-1 DO-35 package?
The cathode of the 1N4627-1 is marked by a distinct color band on the glass DO-35 body. For proper Zener regulation, the banded end must be held at a higher potential than the unmarked (anode) end - reverse biasing the junction to achieve 6.2 V breakdown conduction.
1N4627-1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- DO-204AA, DO-7, Axial
- Packaging:
- Bulk
- 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:
- 1 µA @ 5.7 V
- Voltage - Forward (Vf) (Max) @ If:
- 1.1 V @ 200 mA
- Operating Temperature:
- -65°C ~ 175°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-7
1N4627-1 FAQ
1.How can I place an order for 1N4627-1 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N4627-1 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 1N4627-1 reliable?
The price and inventory of 1N4627-1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N4627-1 is usually 5 days.
3.What payment methods are accepted for 1N4627-1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N4627-1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N4627-1?
1N4627-1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N4627-1 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 1N4627-1?
For technical support, including 1N4627-1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N4627-1 requirements.
6.How does Aetrix verify that 1N4627-1 is sourced from the original manufacturer or authorized distributors?
All 1N4627-1 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 1N4627-1 meets industry standards.
7.What is the process for return or replacement of 1N4627-1?
All 1N4627-1 units undergo pre-shipment inspection (PSI). If there is an issue with 1N4627-1, 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 1N4627-1 part is unused and in its original packaging.
Return procedure for 1N4627-1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N4627-1 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…
