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Microchip Technology 1N5223BE3
- Part No.:
- 1N5223BE3
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AA, DO-7, Axial
- Datasheet:
-
1N5223BE3.pdf
- Description:
- DIODE ZENER 2.7V 500MW DO7
- Quantity:
- Payment:
- Shipping:
Inventory:7,111
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Product details
Overview
1N5223BE3 from Microsemi is a 2.7 V, ±5% tolerance, 500 mW glass axial-lead Zener diode in DO-35 (DO-204AH) package, rated for 20 mA test current, 1300 Ω dynamic impedance at 0.25 mA, and -0.080 %/°C temperature coefficient. It regulates voltage in low-power reference and bias circuits across industrial temperature range (-65°C to +175°C).
For engineers reviewing the 1N5223BE3 datasheet, 1N5223BE3 pinout, 1N5223BE3 application, or 1N5223BE3 equivalent, this page delivers verified electrical specs, thermal derating behavior, RoHS-compliant plating details, and direct alternatives for precision voltage reference design.
Technical Context
This discrete Zener diode operates in reverse breakdown to maintain stable DC voltage under varying load and temperature conditions. Its 2.7 V nominal regulation voltage is specified at 20 mA test current with tight ±5% tolerance (B suffix) and guaranteed 1300 Ω Zener impedance at knee current (IZK = 0.25 mA).
The device features a hermetically sealed glass DO-35 package with tin-lead or RoHS-compliant matte-tin plating, cathode band marking, and ESD insensitivity per MIL-STD-750 Method 1020. Thermal resistance is 250 °C/W junction-to-lead at 10 mm lead length.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Zener Voltage (VZ) | 2.7 V @ IZT = 20 mA - precise reference point for low-voltage biasing |
| Power Dissipation | 500 mW at 25°C - defines maximum continuous power before thermal derating begins |
| Zener Impedance (ZZT) | 1300 Ω @ IZK = 0.25 mA - indicates sharp knee and stable regulation at low currents |
| Temperature Coefficient (αVZ) | -0.080 %/°C - negative drift enables predictable compensation in temp-stable references |
| Reverse Current (IR) | 150 μA @ VR = 1.0 V - leakage level critical for low-power standby circuits |
| Forward Voltage (VF) | 1.5 V max @ 200 mA - ensures compatibility with standard silicon diode forward-bias logic |
| Operating Temperature | -65°C to +175°C - supports aerospace, downhole, and high-reliability embedded systems |
Pinout & Package
DO-35 (DO-204AH) hermetically sealed glass axial-leaded package with cathode indicated by a single black band; leads are tinned and solderable per MIL-STD-750 Method 2026.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Non-banded end | Connected to circuit ground or lower potential node during Zener operation |
| Cathode | Banded end | Connected to regulated output node; must be held positive relative to anode for breakdown conduction |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC-registered 1N5223B | Industry-standard part number ensuring cross-manufacturer interchangeability and qualification traceability |
| e3 RoHS-compliant plating | Matte-tin finish compliant with EU RoHS Directive 2011/65/EU and compatible with lead-free reflow profiles |
| Low capacitance | Typical <1.5 pF - minimizes signal coupling in high-frequency bias networks and RF detector circuits |
| Radiation hardness | Inherently radiation-hard per MicroNote 050 - suitable for space-grade and nuclear instrumentation applications |
| ESD insensitivity | Qualified per MIL-STD-750 Method 1020 - eliminates need for external ESD protection in handling and assembly |
Applications
| Low-Voltage Reference Supply | Overvoltage Clamp for MCU I/O |
|---|---|
Use Scenario: Providing stable 2.7 V reference for ADC voltage dividers and analog sensor biasing in battery-powered IoT nodes. IC Role / Device Role / Timing Role: Precision shunt voltage reference establishing system-level accuracy baseline. Use Value: Enables ±0.135 V regulation window over full temperature range, supporting 10-bit ADC linearity without trimming. |
Use Scenario: Protecting 3.3 V microcontroller GPIO pins against transient surges from relay coils or ESD events. IC Role / Device Role / Timing Role: Fast-response shunt clamp limiting voltage excursion above 2.7 V threshold. Use Value: Absorbs up to 500 mW surge energy while maintaining clamping voltage within 5% tolerance, preventing latch-up. |
| Temperature-Compensated Bias Network | Low-Power Sensor Excitation |
Use Scenario: Generating stable bias current for NTC thermistors in HVAC control modules operating from -40°C to +85°C ambient. IC Role / Device Role / Timing Role: Negative TC Zener combined with positive TC resistor to achieve near-zero net drift. Use Value: Achieves <±0.5% total bias error over full temperature range using only passive components. |
Use Scenario: Exciting resistive bridge sensors (e.g., strain gauges) in portable medical devices where quiescent current must stay below 100 μA. IC Role / Device Role / Timing Role: Low-leakage shunt regulator supplying constant 2.7 V excitation voltage. Use Value: Delivers 150 μA max reverse leakage at 1.0 V, enabling sub-1 μA system sleep current when paired with CMOS switches. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5223B (non-e3) | Same electrical specs but SnPb plating; not RoHS-compliant | Acceptable in legacy industrial or military programs exempt from RoHS | Select when lead-free compliance is not required and legacy procurement channels are used |
| MMBZ5223BS (SOT-23) | Same 2.7 V/±5%/500 mW rating but surface-mount SOT-23 package; 1000 Ω ZZT | Used in space-constrained PCBs requiring automated placement and reflow | Select for high-volume consumer electronics where board area and assembly automation outweigh axial-lead serviceability |
Compared with 1N5223BE3, the non-RoHS 1N5223B offers identical regulation performance but lacks environmental compliance, while MMBZ5223BS trades axial-lead robustness and thermal mass for compactness and manufacturability-making it suitable for different mechanical and regulatory contexts.
Availability
1N5223BE3 is available at Aetrix Electronics and suitable for low-power voltage reference, overvoltage protection, and sensor biasing applications requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for 1N5223BE3 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 analog, mixed-signal, and radiation-hardened components for aerospace, defense, and industrial markets.
The 1N5223BE3 belongs to Microsemi's legacy 1N52xxB Zener series designed for precision voltage regulation in harsh-environment applications where stability, reliability, and qualification traceability are mandatory.
FAQ
What is the Zener voltage tolerance of the 1N5223BE3?
The 1N5223BE3 has a nominal Zener voltage of 2.7 V with a guaranteed tolerance of ±5%, denoted by the "B" suffix in its part number. This tolerance is validated per JEDEC standards at 20 mA test current and applies across the full operating temperature range of -65°C to +175°C.
Does the 1N5223BE3 meet RoHS requirements?
Yes, the "e3" suffix on 1N5223BE3 explicitly indicates RoHS-compliant matte-tin plating per EU Directive 2011/65/EU. The device uses lead-free terminations and passes all required substance restrictions, including cadmium, mercury, hexavalent chromium, PBB, and PBDE limits.
What is the maximum power dissipation for the 1N5223BE3 at 75°C ambient?
At 75°C ambient temperature, the 1N5223BE3 derates linearly from 500 mW at 25°C. With a thermal resistance of 310°C/W junction-to-ambient on FR4, its maximum allowable power drops to approximately 344 mW - calculated as 500 mW × (1 − (75 − 25)/250), per Figure 1 derating curve.
How is polarity marked on the 1N5223BE3?
The 1N5223BE3 uses a single black cathode band on the glass body to identify the cathode terminal. During Zener operation, the banded end must be held positive relative to the non-banded (anode) end. This marking is consistent across all DO-35 Zeners in the 1N52xxB family.
Can the 1N5223BE3 replace the 1N5223B in existing designs?
Yes, the 1N5223BE3 is a direct drop-in replacement for the 1N5223B in terms of electrical performance, package dimensions, and mounting. The only difference is RoHS-compliant plating; no PCB layout or schematic changes are required when upgrading from 1N5223B to 1N5223BE3.
1N5223BE3 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):
- 2.7 V
- Tolerance:
- ±5%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 30 Ohms
- Current - Reverse Leakage @ Vr:
- 75 µA @ 1 V
- Voltage - Forward (Vf) (Max) @ If:
- 1.5 V @ 200 mA
- Operating Temperature:
- -65°C ~ 175°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-7
1N5223BE3 FAQ
1.How can I place an order for 1N5223BE3 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5223BE3 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 1N5223BE3 reliable?
The price and inventory of 1N5223BE3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5223BE3 is usually 5 days.
3.What payment methods are accepted for 1N5223BE3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5223BE3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5223BE3?
1N5223BE3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5223BE3 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 1N5223BE3?
For technical support, including 1N5223BE3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5223BE3 requirements.
6.How does Aetrix verify that 1N5223BE3 is sourced from the original manufacturer or authorized distributors?
All 1N5223BE3 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 1N5223BE3 meets industry standards.
7.What is the process for return or replacement of 1N5223BE3?
All 1N5223BE3 units undergo pre-shipment inspection (PSI). If there is an issue with 1N5223BE3, 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 1N5223BE3 part is unused and in its original packaging.
Return procedure for 1N5223BE3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N5223BE3 Tags
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