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Microchip Technology 1N5234A/TR
- Part No.:
- 1N5234A/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
1N5234A/TR.pdf
- Description:
- DIODE ZENER 6.2V 500MW DO204AH
- Quantity:
- Payment:
- Shipping:
Inventory:7,656
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Product details
Overview
1N5234A/TR from Microsemi is a 6.2 V, ±10% tolerance, 500 mW glass axial-lead Zener diode in DO-35 (DO-204AH) package, rated for 20 mA test current, 7 Ω dynamic impedance at IZT, and operating across –65°C to +175°C. It serves as a precision voltage reference or shunt regulator in low-power analog circuits, power supply feedback paths, and overvoltage protection.
For engineers reviewing the 1N5234A/TR datasheet, 1N5234A/TR pinout, 1N5234A/TR application, or 1N5234A/TR equivalent, key selection criteria include Zener voltage tolerance, thermal resistance (250°C/W junction-to-lead), reverse leakage (<5 μA at 4.8 V), temperature coefficient (+0.045%/°C), and RoHS-compliant plating options with "e3" suffix.
Technical Context
This discrete Zener diode operates in reverse breakdown mode with cathode band indicating polarity. Its regulation relies on controlled avalanche and Zener mechanisms depending on voltage level - at 6.2 V, it exhibits mixed-mode behavior with stable knee characteristics verified per JEDEC registration.
Designed for through-hole mounting, the device uses hermetically sealed glass construction with tin-lead or annealed matte-tin plating. Thermal performance is defined at 3/8″ (10 mm) lead length from body, and its capacitance remains minimal (<5 pF typical), supporting high-frequency stability in reference and clamping roles.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Zener Voltage | 6.2 V @ 20 mA test current - defines stable regulation point for feedback or reference use |
| Power Dissipation | 500 mW at 25°C - limits continuous shunt current to ~80 mA at 6.2 V without derating |
| Zener Impedance | 7 Ω @ IZT - ensures low output impedance for tight voltage regulation under load variation |
| Reverse Leakage | <5 μA @ 4.8 V - guarantees minimal quiescent current in standby or low-power modes |
| Temp. Coefficient | +0.045 %/°C - enables predictable drift compensation in wide-temperature industrial environments |
| Operating Temp. | –65°C to +175°C - supports deployment in aerospace, downhole, and automotive under-hood applications |
| Package | DO-35 (DO-204AH) glass axial-leaded - provides mechanical robustness and hermetic sealing for reliability-critical use |
Pinout & Package
DO-35 (DO-204AH) glass axial-leaded package: hermetically sealed, 0.2 g weight, tin-lead or RoHS-compliant matte-tin plating, cathode indicated by colored band. Mounting requires 3/8″ (10 mm) minimum lead length from body for rated thermal resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener cathode reference ground | Connected to circuit ground or lower-potential node when used in shunt regulation |
| Cathode | Zener breakdown terminal / regulation output | Banded end; connected to input voltage source to maintain regulated 6.2 V across load |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC-registered Zener | Guarantees compliance with industry-standard electrical limits (VZ, IR, VF) and mechanical form factor |
| ±10% voltage tolerance (A suffix) | Enables cost-effective voltage referencing where tighter tolerances are unnecessary |
| Low dynamic impedance (7 Ω) | Maintains regulation accuracy under varying load currents without external buffering |
| Radiation-hardened design | Inherently radiation-tolerant per MicroNote 050 - suitable for space-qualified and nuclear instrumentation |
| Nonsensitive to ESD | Withstands MIL-STD-750 Method 1020 testing - eliminates need for handling precautions in assembly |
Applications
| Industrial Power Supply Feedback | Automotive Sensor Reference |
|---|---|
Use Scenario: Regulating output voltage in isolated flyback or buck-derived auxiliary supplies. IC Role / Device Role / Timing Role: Shunt voltage reference in optocoupler feedback loop. Use Value: Maintains ±1% output regulation across line/load/temperature with no active components. | Use Scenario: Providing stable bias voltage for pressure or temperature sensor signal conditioning. IC Role / Device Role / Timing Role: Precision DC reference for op-amp excitation and ADC reference scaling. Use Value: Delivers 6.2 V ±10% with <5 μA leakage, minimizing sensor offset error and self-heating. |
| Overvoltage Clamp Protection | Aerospace Board-Level Regulation |
Use Scenario: Protecting microcontroller I/O pins from transient surges on 5 V logic rails. IC Role / Device Role / Timing Role: Passive clamp limiting voltage to 6.2 V during ESD or inductive kick events. Use Value: Responds in nanoseconds with <7 Ω impedance, diverting >100 mA surge without latch-up. | Use Scenario: Local regulation for FPGA configuration memory or analog subsystems in satellite payloads. IC Role / Device Role / Timing Role: Radiation-hardened shunt regulator replacing active LDOs in high-reliability zones. Use Value: Operates continuously from –65°C to +175°C with no derating up to 125°C ambient. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5234B/TR | ±5% Zener tolerance vs. ±10% for 1N5234A/TR; otherwise identical electrical and mechanical specs | Preferred where tighter regulation stability is required in precision references | Select 1N5234B/TR when system-level voltage drift budget allows only ±0.3 V deviation at 6.2 V |
| MMBZ5234BS-7-F | Surface-mount SOD-123 package; same 6.2 V nominal, ±10%, but 200 mW rating and higher ZZT (10 Ω) | Suitable for space-constrained PCBs but not drop-in replacement due to package and power difference | Choose MMBZ5234BS-7-F only when redesigning for SMT and accepting reduced power margin |
Compared with 1N5234B/TR and MMBZ5234BS-7-F, the 1N5234A/TR offers optimal balance of legacy compatibility, axial-leaded serviceability, full 500 mW capability, and JEDEC-standardized DO-35 footprint for repairable or high-reliability through-hole designs.
Availability
1N5234A/TR is available at Aetrix Electronics and suitable for industrial power supplies, automotive sensor interfaces, overvoltage protection circuits, and aerospace board-level regulation requiring stable component supply and long-term obsolescence management.
Supply support for 1N5234A/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, radiation-hardened, and defense-grade analog and discrete components.
The 1N52xx series was developed for military and aerospace applications requiring JEDEC-registered Zener performance, extended temperature operation, and hermetic glass packaging - targeting systems where failure is not an option.
FAQ
What is the Zener voltage tolerance of the 1N5234A/TR?
The 1N5234A/TR has a nominal Zener voltage of 6.2 V with a guaranteed tolerance of ±10%, as indicated by the "A" suffix per Microsemi's documentation. This tolerance applies under standard test conditions (25°C, 20 mA IZT), and the device meets JEDEC registration requirements for VZ, IR, and VF parameters.
Does the 1N5234A/TR require heatsinking in standard PCB mounting?
No, the 1N5234A/TR does not require external heatsinking when operated within its 500 mW rating and derated per Figure 1. At 25°C ambient with 3/8″ lead length, its junction-to-lead thermal resistance is 250°C/W. For FR4 boards with specified copper pads, junction-to-ambient is 310°C/W - sufficient for typical 6.2 V shunt currents below 80 mA.
Is the 1N5234A/TR RoHS compliant?
Yes, the 1N5234A/TR is RoHS compliant when ordered with the "e3" suffix (e.g., 1N5234Ae3/TR). The base part uses tin-lead plating, but RoHS-compliant matte-tin plating is available per MIL-STD-750 Method 2026 and is standard for e3-suffixed variants.
What is the maximum reverse leakage current for the 1N5234A/TR?
The maximum reverse leakage current for the 1N5234A/TR is 5 μA at VR = 4.8 V, as specified in the Electrical Characteristics table. This value is measured after 20 seconds of stabilization with 3/8″ lead length and confirms low standby power consumption in voltage-reference applications.
Can the 1N5234A/TR be used in place of the 1N5234B/TR?
Yes, the 1N5234A/TR can be used in place of the 1N5234B/TR in applications tolerant of ±10% Zener voltage variation instead of ±5%. All other specifications - package, power rating, impedance, temperature range, and pinout - are identical. No PCB changes are needed, but system-level voltage accuracy must accommodate the wider tolerance.
1N5234A/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):
- 6.2 V
- Tolerance:
- ±10%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 7 Ohms
- Current - Reverse Leakage @ Vr:
- 5 µA @ 3.8 V
- Voltage - Forward (Vf) (Max) @ If:
- 1.5 V @ 200 mA
- Operating Temperature:
- -65°C ~ 175°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AH (DO-35)
1N5234A/TR FAQ
1.How can I place an order for 1N5234A/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5234A/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 1N5234A/TR reliable?
The price and inventory of 1N5234A/TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5234A/TR is usually 5 days.
3.What payment methods are accepted for 1N5234A/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5234A/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5234A/TR?
1N5234A/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5234A/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 1N5234A/TR?
For technical support, including 1N5234A/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5234A/TR requirements.
6.How does Aetrix verify that 1N5234A/TR is sourced from the original manufacturer or authorized distributors?
All 1N5234A/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 1N5234A/TR meets industry standards.
7.What is the process for return or replacement of 1N5234A/TR?
All 1N5234A/TR units undergo pre-shipment inspection (PSI). If there is an issue with 1N5234A/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 1N5234A/TR part is unused and in its original packaging.
Return procedure for 1N5234A/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N5234A/TR Tags
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