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Microchip Technology 1N5272B/TR
- Part No.:
- 1N5272B/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
1N5272B/TR.pdf
- Description:
- DIODE ZENER 110V 500MW DO204AH
- Quantity:
- Payment:
- Shipping:
Inventory:3,768
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Product details
Overview
1N5272B/TR from Microsemi is a 500 mW, 110 V nominal Zener diode in DO-35 glass axial-leaded package with ±5% voltage tolerance (B suffix), 1.1 mA test current, and 750 Ω maximum zener impedance at 0.25 mA. It regulates voltage in low-power reference and protection circuits across industrial temperature range (−65°C to +175°C).
For engineers reviewing the 1N5272B/TR datasheet, 1N5272B/TR pinout, 1N5272B/TR application, or 1N5272B/TR equivalent, key selection criteria include its 110 V regulation level, low leakage (<0.1 μA at 88 V), stable temperature coefficient (+0.110 %/°C), and RoHS-compliant e3 variant availability.
Technical Context
This discrete Zener diode operates in reverse breakdown to maintain a stable 110 V reference under varying load and temperature conditions. Its DO-35 package supports axial through-hole mounting with cathode band identification and tin-lead or matte-tin plating for solderability per MIL-STD-750.
Designed for precision voltage clamping and regulation, it delivers 750 Ω dynamic impedance at IZK = 0.25 mA and exhibits minimal capacitance (typical <2 pF at 0 V) - critical for noise-sensitive analog references and overvoltage protection in legacy power supplies.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Zener Voltage | 110 V @ IZT = 1.1 mA - defines precise regulation point for high-voltage reference design |
| Power Dissipation | 500 mW at 25°C - sets maximum continuous power handling before thermal derating applies |
| Zener Impedance | 750 Ω max @ IZK = 0.25 mA - indicates voltage stability under light-load transient conditions |
| Reverse Leakage Current | <0.1 μA @ VR = 88 V - ensures minimal quiescent current in standby protection circuits |
| Temperature Coefficient | +0.110 %/°C - quantifies voltage drift over −65°C to +175°C operating range |
| Package | DO-35 (DO-204AH) glass axial-leaded - enables manual assembly and high-reliability hermetic sealing |
| Tolerance | ±5% (B suffix) - guarantees VZ between 104.5 V and 115.5 V at 25°C |
Pinout & Package
DO-35 glass axial-leaded package with cathode indicated by colored band; leads are unmarked anode/cathode terminals suitable for through-hole PCB mounting. Hermetically sealed construction provides moisture resistance and long-term parameter stability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (unbanded end) | Reference ground node | Connected to circuit common; reverse-biased operation requires this terminal at lower potential than cathode |
| Cathode (banded end) | Zener regulation output | Provides stabilized 110 V relative to anode when reverse current ≥1.1 mA flows |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC-registered 1N52xxB series | Ensures cross-manufacturer compatibility and standardized electrical limits per JEDEC spec |
| RoHS-compliant e3 option | Enables compliance with environmental directives without performance trade-offs |
| Radiation-hardened construction | Inherently meets radiation hardness requirements per MicroNote 050 for aerospace/military use |
| ESD-insensitive design | Withstands >4 kV HBM per MIL-STD-750 Method 1020 without parameter shift |
| Wide operating temperature range | −65°C to +175°C operation supports engine control, downhole, and avionics applications |
Applications
| High-Voltage Reference Supply | Overvoltage Clamp for Legacy Power Rails |
|---|---|
Use Scenario: Stabilizing feedback node in linear regulator for telecom line card bias supply. IC Role / Device Role / Timing Role: Zener diode providing precise 110 V reference to error amplifier input. Use Value: Maintains ±0.5% output regulation despite 15% input ripple and 85°C ambient temperature. | Use Scenario: Protecting op-amp inputs against transient surges on 100 V sensor interface lines. IC Role / Device Role / Timing Role: Clamping device shunting excess energy above 110 V to ground. Use Value: Limits peak voltage to 115 V with <10 ns response, preventing CMOS input latch-up. |
| Industrial Sensor Excitation | Military-Grade Voltage Monitor |
Use Scenario: Supplying constant-current excitation to high-resistance RTD bridges in process control systems. IC Role / Device Role / Timing Role: Zener-based current source reference enabling 0.1% bridge accuracy. Use Value: Delivers stable 110 V across −40°C to +85°C with <50 ppm/°C drift contribution. | Use Scenario: Monitoring 100 V DC bus in vehicle electronics with MIL-PRF-19500 screening. IC Role / Device Role / Timing Role: Precision threshold detector using JANTXV-qualified 1N5272B/TR variant. Use Value: Provides fail-safe shutdown trigger at 110 V ±5% with guaranteed life >100,000 hours. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5272B | No TR suffix - bulk packaging, not tape-and-reel; identical electrical specs and DO-35 package | Suitable for hand-soldered prototypes or low-volume production where reel feeding is unnecessary | Select 1N5272B/TR when automated SMT placement or consistent reel logistics are required |
| MMBZ5272B | SOT-23 surface-mount package; same 110 V, ±5%, 500 mW rating but higher thermal resistance (400°C/W vs 250°C/W) | Better suited for space-constrained PCBs but requires reflow profile validation and derating above 70°C | Choose MMBZ5272B only when board area savings outweigh thermal performance loss in ambient >60°C |
Compared with 1N5272B/TR, the 1N5272B lacks tape-and-reel convenience for automated assembly, while MMBZ5272B trades axial-leaded robustness and thermal performance for miniaturization - making 1N5272B/TR optimal for high-reliability through-hole designs requiring full 500 mW capability across wide temperature extremes.
Availability
1N5272B/TR is available at Aetrix Electronics and suitable for high-voltage reference supplies, overvoltage clamps, and industrial sensor excitation requiring stable component supply and long-lifecycle support.
Supply support for 1N5272B/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 (now part of Microchip Technology) is a U.S.-based semiconductor company specializing in high-reliability analog, RF, and radiation-hardened components for aerospace, defense, and industrial markets.
The 1N52xxB series was developed to deliver JEDEC-standardized, high-stability Zener regulation in hermetic glass packages for mission-critical voltage reference and protection functions.
FAQ
What is the maximum reverse leakage current specification for the 1N5272B/TR?
The 1N5272B/TR has a maximum reverse leakage current of 0.1 μA at VR = 88 V (80% of nominal 110 V). This low leakage ensures minimal power loss in high-impedance reference circuits and supports reliable operation in battery-backed or ultra-low-power monitoring applications where standby current must remain below 100 nA.
Does the 1N5272B/TR require heatsinking in standard PCB layouts?
No, the 1N5272B/TR does not require external heatsinking when operated ≤500 mW at TL < 50°C (3/8″ lead length from body) or ≤480 mW at TA < 25°C on FR4 with 4 mm² copper pads. Its DO-35 package has a junction-to-lead thermal resistance of 250°C/W, allowing direct mounting without thermal vias or copper pours in most industrial designs.
Is the 1N5272B/TR compatible with lead-free reflow processes?
Yes - the 1N5272B/TR is RoHS-compliant (e3 suffix option) and rated for solder temperatures up to 260°C for 10 seconds. When using the e3 variant, it supports standard lead-free reflow profiles; the standard tin-lead version is limited to wave or hand-soldering per MIL-STD-750 Method 2026.
How does the temperature coefficient of the 1N5272B/TR affect long-term voltage stability?
The 1N5272B/TR has a temperature coefficient of +0.110 %/°C, meaning its Zener voltage increases by ~121 mV per 10°C rise. Over −65°C to +175°C, total drift is approximately ±13.2 V - acceptable for non-precision clamping but requires compensation in metrology-grade references where <0.1% total drift is needed.
Can the 1N5272B/TR be used in place of the 1N5272B without design changes?
Yes - the 1N5272B/TR shares identical electrical specifications, DO-35 package dimensions, and pinout with the 1N5272B. The only difference is tape-and-reel packaging (TR suffix), which enables automated pick-and-place assembly. No schematic, layout, or thermal modifications are required when substituting 1N5272B/TR for 1N5272B.
1N5272B/TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- DO-204AH, DO-35, Axial
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 110 V
- Tolerance:
- ±5%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 750 Ohms
- Current - Reverse Leakage @ Vr:
- 100 nA @ 84 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)
1N5272B/TR FAQ
1.How can I place an order for 1N5272B/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5272B/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 1N5272B/TR reliable?
The price and inventory of 1N5272B/TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5272B/TR is usually 5 days.
3.What payment methods are accepted for 1N5272B/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5272B/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5272B/TR?
1N5272B/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5272B/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 1N5272B/TR?
For technical support, including 1N5272B/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5272B/TR requirements.
6.How does Aetrix verify that 1N5272B/TR is sourced from the original manufacturer or authorized distributors?
All 1N5272B/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 1N5272B/TR meets industry standards.
7.What is the process for return or replacement of 1N5272B/TR?
All 1N5272B/TR units undergo pre-shipment inspection (PSI). If there is an issue with 1N5272B/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 1N5272B/TR part is unused and in its original packaging.
Return procedure for 1N5272B/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N5272B/TR Tags
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BZT52C5V6T-7
Diodes Incorporated
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MMSZ5231B-7-F
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BZX84C3V3LT1G
onsemi
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MMSZ4682T1G
onsemi
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BZT52C15S-7-F
Diodes Incorporated
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MM5Z5V1ST1G
onsemi
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SMAJ4744A-TP
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SMAZ12-13-F
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