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Microchip Technology 1N5275BE3
- Part No.:
- 1N5275BE3
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
1N5275BE3.pdf
- Description:
- DIODE ZENER 140V 500MW DO204AH
- Quantity:
- Payment:
- Shipping:
Inventory:2,565
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Product details
Overview
1N5275BE3 from Microsemi is a 140 V, ±5% tolerance, 500 mW glass axial-lead Zener diode in DO-35 (DO-204AH) package, rated for operation from −65 °C to +175 °C, with 1300 Ω dynamic impedance at 0.25 mA and 0.1 μA maximum reverse leakage at 112 V. It serves as a precision voltage reference or overvoltage clamp in high-temperature industrial power supplies.
For engineers reviewing the 1N5275BE3 datasheet, 1N5275BE3 pinout, 1N5275BE3 application, or 1N5275BE3 equivalent, key selection criteria include Zener voltage stability across temperature, low leakage at rated VR, thermal resistance (310 °C/W on FR4), RoHS-compliant matte-tin plating, and JEDEC-registered qualification per MIL-PRF-19500 screening options.
Technical Context
This device operates in reverse-bias breakdown mode with a sharp knee characteristic verified by dual-point Zener impedance measurement per MicroNote 202. Its temperature coefficient of +0.110 %/°C applies under IZT = 0.90 mA, T1 = 25 °C, T2 = 125 °C per Note 3b.
The 1N5275BE3 uses hermetically sealed glass construction with cathode band polarity marking, tin-lead or RoHS-compliant annealed matte-tin plating, and is rated for 260 °C soldering (10 s max). It exhibits minimal capacitance per Figure 2 and inherent radiation hardness per MicroNote 050.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Zener Voltage | 140 V at 0.90 mA test current - defines regulation setpoint under standard bias |
| Zener Tolerance | ±5% (B suffix) - guarantees actual VZ between 133 V and 147 V at 25 °C |
| Power Dissipation | 500 mW at 25 °C, derated linearly to 0 W at 175 °C - sets thermal design margin on PCB |
| Zener Impedance | 1300 Ω at IZK = 0.25 mA - indicates regulation stiffness near knee current |
| Reverse Leakage | 0.1 μA max at VR = 112 V - ensures low standby power loss in clamp circuits |
| Temp Coefficient | +0.110 %/°C - quantifies VZ drift magnitude over operating range |
| Operating Temp | −65 °C to +175 °C - supports deployment in aerospace, downhole, or engine-control environments |
Pinout & Package
DO-35 (DO-204AH) glass axial-leaded package with cathode indicated by colored band; leads are flexible axial terminals suitable for through-hole mounting on FR4 or ceramic substrates.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Non-banded end | Connected to lower-potential node during Zener operation; forward voltage ≤1.5 V @ 200 mA |
| Cathode | Banded end | Connected to higher-potential node; Zener breakdown occurs when cathode is ≥140 V above anode |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC-registered qualification | Guarantees compliance with 1N52xxB family electrical limits per JEDEC spec |
| RoHS-compliant plating | Matte-tin finish meets lead-free assembly requirements without compromising solderability |
| Radiation hardness | Inherent hardness per MicroNote 050 - suitable for space-grade or nuclear instrumentation |
| ESD insensitivity | Qualified per MIL-STD-750 Method 1020 - eliminates need for handling protection in production |
| Stable high-voltage regulation | Sharp breakdown knee verified by dual-point ZZT/ZZK testing - rejects supply ripple effectively |
Applications
| Industrial Power Supply Regulation | Aerospace Voltage Reference |
|---|---|
Use Scenario: Stabilizing feedback node in isolated DC-DC converter output stage operating at 125 °C ambient. IC Role / Device Role / Timing Role: Zener diode providing precise 140 V reference for optocoupler-based error amplifier. Use Value: Maintains ±5% output regulation despite thermal drift, leveraging +0.110 %/°C TC and 1300 Ω impedance to suppress noise coupling. | Use Scenario: Clamp circuit protecting avionics sensor interface against transients up to 200 V. IC Role / Device Role / Timing Role: High-voltage transient suppressor placed across analog input pins of ADC front-end. Use Value: Limits voltage excursions to ≤147 V (max VZ) with 0.1 μA leakage at 112 V, minimizing signal path loading. |
| Downhole Oilfield Instrumentation | High-Temperature Motor Drive Feedback |
Use Scenario: Biasing circuit for pressure transducer amplifier in borehole tool exposed to 170 °C. IC Role / Device Role / Timing Role: Temperature-stable voltage reference for gain-setting network. Use Value: Delivers predictable 140 V setpoint across full −65 °C to +175 °C range, validated per MIL-PRF-19500 JANTXV screening. | Use Scenario: Overvoltage detection node in IGBT gate driver supply monitoring 600 V DC bus. IC Role / Device Role / Timing Role: Zener-based comparator threshold element triggering shutdown at 147 V. Use Value: Enables fast response with sharp knee and low capacitance, reducing false triggers from dv/dt noise. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5275B | No "e3" RoHS suffix; tin-lead plating instead of matte-tin | Not compliant with lead-free assembly mandates | Select only for legacy rework or non-RoHS programs |
| MMBZ5275B | SOT-23 surface-mount package; 225 mW power rating; same 140 V/±5% spec | Lower power handling and different thermal path; unsuitable for 500 mW continuous dissipation | Choose only for space-constrained PCBs where derated operation is acceptable |
Compared with 1N5275B and MMBZ5275B, the 1N5275BE3 uniquely combines full 500 mW DO-35 power capability, RoHS compliance, and guaranteed JEDEC registration - making it the sole option for new high-reliability, high-temperature, lead-free through-hole designs requiring 140 V regulation.
Availability
1N5275BE3 is available at Aetrix Electronics and suitable for industrial power supplies, aerospace voltage references, and downhole instrumentation requiring stable component supply under extreme temperature and reliability constraints.
Supply support for 1N5275BE3 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, radiation-hardened, and high-temperature analog components.
The 1N52xxB series was designed for precision voltage regulation in mission-critical systems where long-term stability, wide temperature operation, and JEDEC-standard compliance are mandatory.
FAQ
What is the maximum reverse voltage rating for the 1N5275BE3 before breakdown?
The 1N5275BE3 has a nominal Zener voltage of 140 V at 0.90 mA test current, with ±5% tolerance. Its guaranteed breakdown range is 133 V to 147 V at 25 °C. The device is not rated for continuous operation above 147 V in regulation mode; exceeding this risks thermal runaway unless current is strictly limited by external series resistance.
Does the 1N5275BE3 meet RoHS requirements?
Yes, the "e3" suffix on 1N5275BE3 explicitly denotes RoHS compliance per Microsemi documentation. It features annealed matte-tin plating qualified to MIL-STD-750 Method 2026, eliminating lead content while maintaining solderability and reliability in high-temperature reflow profiles.
What is the thermal resistance junction-to-ambient for the 1N5275BE3 on a standard FR4 board?
The 1N5275BE3 has a thermal resistance of 310 °C/W junction-to-ambient when mounted on FR4 with 1 oz copper, 4 mm² pads, and 1 mm × 25 mm traces. This value determines safe power derating: at 100 °C ambient, maximum dissipation drops to ~240 mW to keep junction temperature ≤175 °C.
Can the 1N5275BE3 be used in place of the 1N5275B without layout changes?
Yes - the 1N5275BE3 shares identical DO-35 mechanical dimensions, pinout, and electrical specifications with the 1N5275B. The only difference is the RoHS-compliant matte-tin plating versus tin-lead; no PCB layout or schematic modifications are required for drop-in replacement in new or existing designs.
What is the Zener impedance of the 1N5275BE3 at its specified test current?
The 1N5275BE3 does not specify Zener impedance at IZT = 0.90 mA. Instead, its dynamic impedance is characterized at IZK = 0.25 mA as 1300 Ω (ZZK), per the Electrical Characteristics table. This value reflects regulation stiffness near the knee of the breakdown curve, critical for low-current reference applications.
1N5275BE3 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- DO-204AH, DO-35, Axial
- Packaging:
- Bulk
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 140 V
- Tolerance:
- ±5%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 1300 Ohms
- Current - Reverse Leakage @ Vr:
- 100 nA @ 106 V
- Voltage - Forward (Vf) (Max) @ If:
- 1.5 V @ 200 mA
- Operating Temperature:
- -65°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AH (DO-35)
1N5275BE3 FAQ
1.How can I place an order for 1N5275BE3 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5275BE3 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 1N5275BE3 reliable?
The price and inventory of 1N5275BE3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5275BE3 is usually 5 days.
3.What payment methods are accepted for 1N5275BE3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5275BE3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5275BE3?
1N5275BE3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5275BE3 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 1N5275BE3?
For technical support, including 1N5275BE3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5275BE3 requirements.
6.How does Aetrix verify that 1N5275BE3 is sourced from the original manufacturer or authorized distributors?
All 1N5275BE3 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 1N5275BE3 meets industry standards.
7.What is the process for return or replacement of 1N5275BE3?
All 1N5275BE3 units undergo pre-shipment inspection (PSI). If there is an issue with 1N5275BE3, 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 1N5275BE3 part is unused and in its original packaging.
Return procedure for 1N5275BE3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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