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Microchip Technology 1N4753AP/TR12
- Part No.:
- 1N4753AP/TR12
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
1N4753AP/TR12.pdf
- Description:
- DIODE ZENER 36V 1W DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:3,633
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Product details
Overview
1N4753AP/TR12 from Microsemi is a 1.0 W axial-lead silicon Zener diode with nominal zener voltage 36 V, ±5% tolerance (A suffix), 7.0 mA test current (IZT), 50 Ω maximum dynamic impedance at IZT, and 0.25 A maximum regulator current at TA = 50°C. It operates from –65°C to +150°C and is used for precision voltage regulation in power supply feedback loops, overvoltage protection circuits, and reference voltage generation.
For engineers reviewing the 1N4753AP/TR12 datasheet, 1N4753AP/TR12 pinout, 1N4753AP/TR12 application, or 1N4753AP/TR12 equivalent, key selection factors include its DO-41 package thermal resistance (45°C/W junction-to-lead), 1.2 V max forward voltage at 200 mA, RoHS-compliant "e3" plating option, and tape-and-reel packaging (TR12) for automated assembly.
Technical Context
This Zener diode functions in reverse-bias breakdown mode to maintain stable output voltage across varying load and line conditions. Its 36 V nominal zener voltage is specified at 7.0 mA test current with ≤50 Ω dynamic impedance, ensuring low regulation error under typical operating currents from 1 mA to 250 mA.
Thermal performance is defined by two derating paths: 1.0 W at lead temperature TL < 105°C (3/8″ from body) or at ambient temperature TA < 45°C on FR4 board with 4 mm² copper pads. The device exhibits a negative temperature coefficient near 36 V, consistent with mid-voltage Zener behavior per Figure 3.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 36 V ±5% at IZT = 7.0 mA - defines regulated output level in feedback or clamp applications |
| Power Dissipation | 1.0 W at TL ≤ 105°C - sets maximum continuous power handling with proper lead heatsinking |
| Dynamic Impedance (ZZT) | ≤50 Ω at IZT = 7.0 mA - determines voltage variation under changing load current |
| Maximum Regulator Current (IZM) | 0.25 A at TA = 50°C - limits safe reverse current during sustained regulation |
| Forward Voltage (VF) | ≤1.2 V at IF = 200 mA - relevant for polarity protection or series diode use |
| Operating Temperature | –65°C to +150°C - supports industrial and automotive under-hood environments |
| Thermal Resistance (Junction-to-Lead) | 45°C/W at 3/8″ lead length - enables thermal design using lead as primary heat path |
Pinout & Package
Package: DO-41 (JEDEC DO-204AL), axial-lead plastic molded epoxy case (UL94V-0), cathode indicated by band. Tin-lead or RoHS-compliant matte-tin plating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Reverse-bias current sink terminal | Connected to lower-potential node; carries full Zener current during regulation |
| Cathode (banded end) | Reverse-bias voltage reference terminal | Connected to regulated output node; maintains fixed voltage relative to anode |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC-registered 1N47xxA series | Industry-standard footprint and electrical behavior enabling direct substitution in legacy designs |
| Plastic P-suffix construction | Lower thermal resistance vs. glass-body (G-suffix) variants, improving power handling in compact layouts |
| MIL-PRF-19500 screening options | Available with MQ/MX/MV/MSP prefixes for JAN/JANTX/JANTXV/JANS qualification in high-reliability programs |
| Moisture sensitivity Level 1 | No dry pack required per IPC/JEDEC J-STD-020B - simplifies SMT handling and storage logistics |
| Tape-and-reel packaging (TR12) | Standard EIA-296 format with 12 mm tape width - compatible with high-speed pick-and-place equipment |
Applications
| Power Supply Feedback Regulation | Overvoltage Clamp Protection |
|---|---|
Use Scenario: Used in the optocoupler feedback path of isolated DC-DC converters to regulate output voltage. IC Role / Device Role / Timing Role: Zener reference element providing stable 36 V threshold to drive optocoupler LED. Use Value: Maintains ±5% output regulation across line/load transients and temperature drift due to tight VZ tolerance and low ZZT. | Use Scenario: Placed across sensitive IC inputs to limit transient overvoltage from ESD or inductive switching. IC Role / Device Role / Timing Role: Shunt clamping device that conducts above 36 V to divert surge energy. Use Value: Limits peak voltage to ≤36.2 V (VZ + ΔV at ISM) while surviving 1.25 A surge per 1/120 s pulse. |
| Fixed Reference Voltage Source | Current Source Biasing |
Use Scenario: Provides stable bias voltage for op-amp comparators or analog sensor signal conditioning circuits. IC Role / Device Role / Timing Role: Precision voltage reference node referenced to ground or system rail. Use Value: Delivers 36 V with ≤50 Ω dynamic impedance, minimizing reference shift under varying load current up to 25 mA. | Use Scenario: Configured with series resistor to generate constant current for LED drivers or transistor bias networks. IC Role / Device Role / Timing Role: Voltage-regulating element establishing fixed drop across current-setting resistor. Use Value: Enables predictable current setpoint (e.g., 10 mA) with <1% drift over –40°C to +85°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 |
|---|---|---|---|
| 1N4753A (no TR suffix) | Same electrical specs and DO-41 package; lacks tape-and-reel packaging | Not suitable for automated SMT assembly; requires manual or bulk placement | Select when hand-soldering or low-volume prototyping eliminates need for TR12 format |
| BZX55C36 (Vishay) | 36 V, ±5%, 500 mW rating, DO-35 package, higher ZZT (70 Ω) | Lower power handling and higher impedance limit use in high-current or precision regulation | Choose only for space-constrained designs where 0.5 W dissipation suffices and DO-35 footprint is required |
Compared with 1N4753A (bulk) and BZX55C36, the 1N4753AP/TR12 offers full 1.0 W capability in tape-and-reel format with industry-low 50 Ω dynamic impedance-making it optimal for production-grade power regulation where reliability, thermal margin, and assembly compatibility are critical.
Availability
1N4753AP/TR12 is available at Aetrix Electronics and suitable for power supply feedback regulation, overvoltage clamp protection, and fixed reference voltage source applications requiring stable component supply and RoHS-compliant manufacturing.
Supply support for 1N4753AP/TR12 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 and mixed-signal components for aerospace, defense, and industrial markets.
The 1N4753AP/TR12 belongs to Microsemi's legacy 1N47xxAP Zener series, engineered for robust voltage regulation in harsh-environment power systems where long-term stability and MIL-spec screening readiness are essential.
FAQ
What is the zener voltage tolerance for 1N4753AP/TR12?
The 1N4753AP/TR12 has a nominal zener voltage of 36 V with ±5% tolerance, as indicated by the "A" suffix in the part number per Microsemi's JEDEC-registered specification. This tolerance applies at 7.0 mA test current and 25°C lead temperature. The device does not offer tighter tolerances (e.g., ±2% or ±1%) unless marked with C or D suffixes, which are not present in this variant.
Does 1N4753AP/TR12 support automated PCB assembly?
Yes, the "TR12" suffix confirms that 1N4753AP/TR12 is supplied in EIA-296 standard tape-and-reel format with 12 mm carrier tape width, fully compatible with high-speed pick-and-place equipment. Its DO-41 axial package is designed for through-hole insertion, and the moisture sensitivity Level 1 rating eliminates dry-pack requirements prior to assembly.
What is the maximum steady-state current the 1N4753AP/TR12 can regulate?
The 1N4753AP/TR12 supports a maximum regulator current (IZM) of 0.25 A at ambient temperature TA = 50°C when mounted on FR4 board with specified copper pad geometry. At lower ambient temperatures or with enhanced heatsinking (e.g., shorter leads), it can sustain higher currents up to its 1.0 W power limit, provided junction temperature remains within –65°C to +150°C range.
How does the thermal resistance of 1N4753AP/TR12 affect PCB layout?
The 1N4753AP/TR12 has a junction-to-lead thermal resistance of 45°C/W at 3/8″ (10 mm) lead length, meaning lead length directly impacts power handling. For reliable 1.0 W operation, leads must be kept ≥10 mm from the body and routed over thermal vias or wide copper pours. On FR4 with 4 mm² pads, junction-to-ambient resistance rises to 105°C/W, limiting usable power to ~0.43 W at TA = 45°C.
Is 1N4753AP/TR12 RoHS compliant?
Yes, the "e3" designation in the full manufacturer part number (1N4753AP,e3/TR12) indicates RoHS compliance with annealed matte-tin plating per Microsemi's documentation. The device meets EU RoHS Directive 2011/65/EU and contains no lead, mercury, cadmium, hexavalent chromium, PBB, or PBDE above threshold limits.
1N4753AP/TR12 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- DO-204AL, DO-41, Axial
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 36 V
- Tolerance:
- ±5%
- Power - Max:
- 1 W
- Impedance (Max) (Zzt):
- 50 Ohms
- Current - Reverse Leakage @ Vr:
- 5 µA @ 27.4 V
- Voltage - Forward (Vf) (Max) @ If:
- 1.2 V @ 200 mA
- Operating Temperature:
- -65°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AL (DO-41)
1N4753AP/TR12 FAQ
1.How can I place an order for 1N4753AP/TR12 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N4753AP/TR12 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 1N4753AP/TR12 reliable?
The price and inventory of 1N4753AP/TR12 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N4753AP/TR12 is usually 5 days.
3.What payment methods are accepted for 1N4753AP/TR12?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N4753AP/TR12 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N4753AP/TR12?
1N4753AP/TR12 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N4753AP/TR12 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 1N4753AP/TR12?
For technical support, including 1N4753AP/TR12 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N4753AP/TR12 requirements.
6.How does Aetrix verify that 1N4753AP/TR12 is sourced from the original manufacturer or authorized distributors?
All 1N4753AP/TR12 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 1N4753AP/TR12 meets industry standards.
7.What is the process for return or replacement of 1N4753AP/TR12?
All 1N4753AP/TR12 units undergo pre-shipment inspection (PSI). If there is an issue with 1N4753AP/TR12, 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 1N4753AP/TR12 part is unused and in its original packaging.
Return procedure for 1N4753AP/TR12:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N4753AP/TR12 Tags
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