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Microchip Technology 1N5234B/TR
- Part No.:
- 1N5234B/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
1N5234B/TR.pdf
- Description:
- DIODE ZENER 6.2V 500MW DO204AH
- Quantity:
- Payment:
- Shipping:
Inventory:7,279
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Product details
Overview
1N5234B/TR from Microsemi is a 6.2 V, ±5% tolerance, 500 mW glass axial-lead Zener diode in DO-35 (DO-204AH) package, rated for 20 mA test current and 7 Ω dynamic impedance at IZT, used for precision voltage regulation in low-power analog reference and overvoltage protection circuits.
For engineers reviewing the 1N5234B/TR datasheet, 1N5234B/TR pinout, 1N5234B/TR application, or 1N5234B/TR equivalent, this part serves as a JEDEC-registered, RoHS-compliant (e3), tape-and-reel packaged Zener regulator with verified thermal resistance (250 °C/W junction-to-lead), stable temperature coefficient (+0.045 %/°C), and MIL-STD-750 qualified ESD immunity.
Technical Context
This discrete Zener diode operates in reverse breakdown to maintain a stable 6.2 V reference across load variations and temperature shifts from –65 °C to +175 °C. Its 7 Ω Zener impedance at 20 mA ensures minimal output voltage deviation under dynamic current conditions.
The device uses a hermetically sealed glass DO-35 package with tin-lead or matte-tin plating, cathode band marking, and axial-leaded mechanical mounting. It exhibits 5.0 μA maximum reverse leakage at 4.8 V and 1.5 V forward voltage limit at 200 mA.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Zener Voltage | 6.2 V @ 20 mA - precise regulation point for low-voltage reference designs |
| Zener Tolerance | ±5% (B suffix) - guarantees VZ between 5.9 V and 6.5 V at 25 °C |
| Power Dissipation | 500 mW at 25 °C - supports continuous operation in compact PCB layouts with derating above 50 °C |
| Zener Impedance | 7 Ω @ IZT = 20 mA - ensures tight regulation under varying load currents |
| Temperature Coefficient | +0.045 %/°C - predictable positive drift enables compensation in temperature-sensitive references |
| Reverse Leakage | 5.0 μA @ 4.8 V - low standby current preserves battery life in always-on monitoring circuits |
| Package | DO-35 (DO-204AH) glass axial-leaded - industry-standard through-hole footprint with 0.2 g mass and FR4-compatible thermal profile |
Pinout & Package
DO-35 (DO-204AH) hermetically sealed glass axial-leaded package with cathode indicated by a single black band; leads are tin-lead or RoHS-compliant matte-tin plated, solderable per MIL-STD-750 Method 2026; polarity must be observed - banded end is cathode and must be held positive relative to anode during Zener operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener cathode reference node | Connected to circuit ground or lower-potential rail; reverse-biased configuration places cathode at regulated voltage |
| Cathode | Zener regulation terminal / voltage reference output | Banded end; connected to supply rail or load node requiring stabilized 6.2 V; defines regulation polarity |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC-registered 1N52xxB series | Guarantees full six-parameter electrical limits (VZ, IR, ZZT, ZZK, αVZ, VF) - not just VZ/IR/VR like generic JEDEC types |
| Stable temperature coefficient | +0.045 %/°C enables predictable drift compensation in industrial sensor front-ends operating across –65 °C to +175 °C |
| Low dynamic impedance | 7 Ω at 20 mA minimizes output voltage variation under ±5 mA load transients in analog power supply feedback paths |
| MIL-STD-750 ESD immunity | Nonsensitive to ESD (Method 1020) - eliminates need for external protection in ruggedized instrumentation designs |
| Tape-and-reel packaging | "TR" suffix denotes EIA-296 compliant reel format - supports automated SMT placement of through-hole components via axial lead feeders |
Applications
| Low-Voltage Reference Source | Overvoltage Clamp Protection |
|---|---|
Use Scenario: Providing stable bias voltage for op-amp comparators and ADC reference inputs in battery-powered data loggers. IC Role / Device Role / Timing Role: Zener diode acting as shunt voltage reference, sinking excess current to maintain 6.2 V at high-impedance node. Use Value: Delivers ±5% accuracy and +0.045 %/°C drift control - sufficient for 10-bit measurement systems without trimming. |
Use Scenario: Clamping transient surges on 5 V logic rails caused by inductive switching in automotive body control modules. IC Role / Device Role / Timing Role: Shunt protector limiting rail voltage to 6.2 V during ESD or load dump events. Use Value: Withstands 500 mW peak dissipation and operates reliably from –65 °C to +175 °C - suitable for under-hood environments. |
| Current-Source Biasing | Signal-Level Voltage Translation |
Use Scenario: Generating constant current for LED biasing in industrial status indicators using resistor-Zener topology. IC Role / Device Role / Timing Role: Zener establishes fixed voltage drop across series resistor to define LED drive current. Use Value: 7 Ω impedance ensures current stability within ±2% over 15–25 mA operating range - reduces brightness variance. |
Use Scenario: Level-shifting TTL outputs to match 6.2 V interface thresholds in legacy industrial PLC input modules. IC Role / Device Role / Timing Role: Passive clamp defining upper logic threshold while preserving edge integrity. Use Value: Minimal capacitance (<1.5 pF typical) avoids signal distortion up to 10 MHz - confirmed in Figure 2 of datasheet. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5234B | No "TR" suffix - bulk pack, not tape-and-reel; identical electrical specs and DO-35 package | Not optimized for automated assembly; requires manual or vibratory bowl feeding | Select 1N5234B/TR when high-volume pick-and-place integration is required |
| MMBZ5234B | SOT-23 surface-mount package; same 6.2 V/±5%/500 mW rating but 350 mW derated power at TA = 25 °C | Enables board space reduction and mixed-technology assembly; lacks axial-lead mechanical robustness | Choose MMBZ5234B only if PCB real estate constraints outweigh need for through-hole reliability and thermal margin |
Compared with 1N5234B/TR, the non-reel 1N5234B saves cost in low-volume prototyping but lacks EIA-296 compliance, while MMBZ5234B trades mechanical durability and thermal performance for miniaturization - making 1N5234B/TR optimal for production-grade through-hole voltage regulation where supply chain continuity and assembly automation matter.
Availability
1N5234B/TR is available at Aetrix Electronics and suitable for low-power voltage reference, overvoltage clamping, and analog biasing applications requiring stable component supply across industrial control, automotive electronics, and test equipment programs.
Supply support for 1N5234B/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 designed specifically for precision voltage regulation in harsh-environment applications demanding wide temperature operation, ESD resilience, and JEDEC-guaranteed parametric limits - not general-purpose Zener use.
FAQ
What is the Zener voltage tolerance of the 1N5234B/TR?
The 1N5234B/TR has a nominal Zener voltage of 6.2 V with a guaranteed tolerance of ±5%, as indicated by the "B" suffix per Microsemi's documentation. This means the actual measured VZ at 20 mA and 25 °C falls between 5.9 V and 6.5 V, meeting full six-parameter JEDEC registration requirements for the B-suffix variant.
Does the 1N5234B/TR require heatsinking in standard PCB layouts?
No, the 1N5234B/TR does not require external heatsinking under typical conditions. Its thermal resistance is 250 °C/W junction-to-lead at 3/8″ lead length, and it delivers full 500 mW dissipation at 25 °C ambient. Derating begins above 50 °C lead temperature, per Figure 1 in the datasheet - standard FR4 layouts with 4 mm² copper pads meet this requirement.
How is polarity marked on the 1N5234B/TR package?
The 1N5234B/TR uses a single black cathode band on the glass DO-35 body to indicate polarity. The banded end is the cathode and must be connected to the higher-potential node (e.g., supply rail) during Zener regulation; the unbanded end is the anode and connects to ground or lower potential. Reversal results in forward conduction (~1.5 V drop), not regulation.
Is the 1N5234B/TR RoHS compliant?
Yes, the 1N5234B/TR is RoHS compliant. Per the datasheet, RoHS-compliant versions are identified by the "e3" suffix, and the part number shown in the source document includes "e3 DO-35" in its header. The finish uses annealed matte-tin plating, qualified per MIL-STD-750 Method 2026, and meets EU Directive 2011/65/EU requirements.
What is the maximum reverse leakage current for the 1N5234B/TR?
The 1N5234B/TR specifies a maximum reverse leakage current (IR) of 5.0 μA at VR = 4.8 V, as listed in the Electrical Characteristics table on page 1 of the Microsemi datasheet. This value is measured after 20 seconds of thermal stabilization with 3/8″ lead length and confirms low standby power consumption in always-on reference circuits.
1N5234B/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:
- ±5%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 7 Ohms
- Current - Reverse Leakage @ Vr:
- 5 µA @ 4 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)
1N5234B/TR FAQ
1.How can I place an order for 1N5234B/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5234B/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 1N5234B/TR reliable?
The price and inventory of 1N5234B/TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5234B/TR is usually 5 days.
3.What payment methods are accepted for 1N5234B/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5234B/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5234B/TR?
1N5234B/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5234B/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 1N5234B/TR?
For technical support, including 1N5234B/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5234B/TR requirements.
6.How does Aetrix verify that 1N5234B/TR is sourced from the original manufacturer or authorized distributors?
All 1N5234B/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 1N5234B/TR meets industry standards.
7.What is the process for return or replacement of 1N5234B/TR?
All 1N5234B/TR units undergo pre-shipment inspection (PSI). If there is an issue with 1N5234B/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 1N5234B/TR part is unused and in its original packaging.
Return procedure for 1N5234B/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N5234B/TR Tags
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