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Microchip Technology 1N4750PE3/TR12
- Part No.:
- 1N4750PE3/TR12
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
1N4750PE3/TR12.pdf
- Description:
- DIODE ZENER 27V 1W DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:2,837
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Product details
Overview
1N4750PE3/TR12 from Microsemi is a 1.0 W, 27 V ±5% axial-lead Zener diode in DO-41 plastic package, rated for 9.5 mA test current, 35 Ω dynamic impedance at IZT, and 5 μA reverse leakage at 20.6 V, used for precision voltage regulation in power supply reference and overvoltage protection circuits.
For engineers reviewing the 1N4750PE3/TR12 datasheet, 1N4750PE3/TR12 pinout, 1N4750PE3/TR12 application, or 1N4750PE3/TR12 equivalent, key selection criteria include Zener voltage tolerance (±5%), thermal resistance (45 °C/W junction-to-lead), surge current rating (750 mA), RoHS-compliant matte-tin plating, and tape-and-reel packaging per EIA-296.
Technical Context
This Zener operates in reverse breakdown to maintain stable 27 V output across 1.0–750 mA operating current range, with sharp knee characteristics verified by dual-point Zener impedance measurement per MicroNote 202. Its DO-41 plastic encapsulation delivers lower thermal resistance than glass-body variants and meets IPC/JEDEC J-STD-020B Level 1 moisture sensitivity without dry pack.
The device features cathode band polarity marking, 1.2 V max forward voltage at 200 mA, and is rated for soldering at 260 °C for 10 s. It supports MIL-PRF-19500 screening when prefixed (e.g., MV1N4750PE3/TR12) and is UL94V-0 compliant with void-free thermosetting epoxy case.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 27 V ±5% at 9.5 mA - defines regulated output voltage with tight production control for reference stability |
| Power Dissipation | 1.0 W at TL < 105 °C - limits continuous thermal load with 45 °C/W junction-to-lead thermal resistance |
| Dynamic Impedance (ZZT) | 35 Ω at 9.5 mA - ensures low output impedance for minimal regulation error under varying load current |
| Reverse Leakage Current | 5 μA at 20.6 V - guarantees low standby power loss in high-impedance bias networks |
| Surge Current (ISM) | 750 mA (½-sine, 1/120 s) - withstands transient overvoltage events without degradation |
| Operating Temperature | −65 °C to +150 °C - supports deployment in industrial and automotive under-hood environments |
| Forward Voltage | 1.2 V max at 200 mA - enables use as clamping diode in bidirectional protection schemes |
Pinout & Package
DO-41 (DO-204AL) plastic axial-lead package with cathode indicated by color band; leads are tin-lead or RoHS-compliant matte-tin plated, solderable per MIL-STD-750 Method 2026.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Non-banded lead | Connected to circuit ground or lower-potential node during Zener operation |
| Cathode | Banded lead | Connected to regulated voltage node; must be held positive relative to anode for breakdown conduction |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC-registered Zener | Complies with standardized 1N47xxA series electrical and mechanical specifications for cross-manufacturer interchangeability |
| RoHS-compliant "e3" suffix | Matte-tin terminal plating meets EU Directive 2011/65/EU and eliminates lead-based solder compatibility concerns |
| Tape-and-reel packaging | EIA-296 compliant TR12 format enables automated SMT placement despite axial-lead form factor |
| Level 1 moisture sensitivity | No dry pack required prior to assembly - reduces handling cost and avoids moisture-induced popcorning |
| Nonsensitive to ESD | Qualified per MIL-STD-750 Method 1020 - survives human-body-model discharges without parameter shift or failure |
Applications
| Power Supply Reference | Overvoltage Clamp |
|---|---|
Use Scenario: Stabilizing feedback voltage in linear regulator ICs or discrete transistor-based regulators. IC Role / Device Role / Timing Role: Zener reference element providing fixed 27 V reference point for error amplifier input. Use Value: Maintains ±5% output accuracy over −65 °C to +150 °C and 1–750 mA current range, reducing need for trimming. | Use Scenario: Protecting microcontroller I/O pins from transient voltage spikes on sensor interface lines. IC Role / Device Role / Timing Role: Bidirectional shunt clamp limiting voltage to 27 V during surges while blocking normal signal swing. Use Value: 750 mA surge rating and 5 μA leakage enable robust protection without loading active circuits during normal operation. |
| Voltage Monitor Threshold | Current Source Bias |
Use Scenario: Setting trip point for brown-out detection circuitry in battery-powered instrumentation. IC Role / Device Role / Timing Role: Precision voltage threshold generator triggering comparator when supply drops below 27 V. Use Value: Sharp knee impedance (35 Ω) ensures fast, repeatable switching with minimal hysteresis dependence on source impedance. | Use Scenario: Establishing stable bias current for op-amp input stages or LED driver transistors. IC Role / Device Role / Timing Role: Constant-current sink using Zener + series resistor to set 1–10 mA bias current. Use Value: 1.0 W power rating and 45 °C/W thermal resistance allow reliable operation at ambient up to +45 °C on FR4 board. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4750A | No "P" (plastic) or "e3" (RoHS) suffix; glass-body construction, Sn/Pb plating only | Higher thermal resistance (junction-to-ambient), not RoHS-compliant | Select only if legacy Sn/Pb assembly or MIL-spec glass-body requirement applies |
| MMSZ5256ET1G | Surface-mount SOD-123 package, 27 V ±5%, 500 mW rating, 30 Ω ZZT | Lower power handling, unsuitable for >500 mW continuous dissipation | Choose for space-constrained PCBs where 1W dissipation is not required |
Compared with 1N4750A and MMSZ5256ET1G, the 1N4750PE3/TR12 offers superior thermal performance in axial-lead form, full RoHS compliance, and higher surge current capability-making it optimal for industrial power rails requiring long-term reliability and automated assembly.
Availability
1N4750PE3/TR12 is available at Aetrix Electronics and suitable for power supply reference, overvoltage protection, and voltage monitor threshold applications requiring stable component supply, consistent parametric performance, and RoHS-compliant manufacturing.
Supply support for 1N4750PE3/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, RF, and discrete components for aerospace, defense, and industrial markets.
The 1N47xxAP series was designed specifically for general-purpose voltage regulation in ruggedized power systems where thermal stability, surge resilience, and JEDEC-standard interchangeability are critical.
FAQ
What is the Zener voltage tolerance for 1N4750PE3/TR12?
The 1N4750PE3/TR12 has a nominal Zener voltage of 27 V with a tolerance of ±5%, as indicated by the "A" suffix in the base part number. This tolerance is specified at 9.5 mA test current and 25 °C lead temperature, and is maintained across the full operating temperature range of −65 °C to +150 °C per Microsemi's published electrical characteristics table.
Does 1N4750PE3/TR12 require dry packing before reflow soldering?
No, the 1N4750PE3/TR12 does not require dry packing. It is moisture sensitivity level (MSL) 1 per IPC/JEDEC J-STD-020B, meaning it can be stored indefinitely at standard ambient conditions without desiccant or dry cabinet. This eliminates pre-bake steps and reduces assembly risk in high-volume production.
What is the maximum surge current rating for 1N4750PE3/TR12?
The 1N4750PE3/TR12 is rated for a maximum surge current (ISM) of 750 mA, measured using a ½-sine wave pulse of 1/120 second duration at 25 °C ambient. This rating enables reliable transient suppression in power rail protection circuits without permanent parameter shift or catastrophic failure.
Is 1N4750PE3/TR12 compatible with lead-free soldering processes?
Yes, the 1N4750PE3/TR12 features RoHS-compliant annealed matte-tin plating and is qualified for lead-free reflow soldering at peak temperatures up to 260 °C for 10 seconds, per MIL-STD-750 Method 2026. Its plastic DO-41 package remains structurally stable under these conditions.
How does the thermal resistance of 1N4750PE3/TR12 compare to glass-body variants?
The 1N4750PE3/TR12 has a junction-to-lead thermal resistance of 45 °C/W at 3/8 inch (10 mm) lead length, which is lower than the glass-body 1N4750A variant due to improved heat transfer through its plastic molded epoxy body. This allows higher continuous power dissipation at equivalent lead temperatures.
1N4750PE3/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):
- 27 V
- Tolerance:
- ±10%
- Power - Max:
- 1 W
- Impedance (Max) (Zzt):
- 35 Ohms
- Current - Reverse Leakage @ Vr:
- 5 µA @ 20.6 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)
1N4750PE3/TR12 FAQ
1.How can I place an order for 1N4750PE3/TR12 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N4750PE3/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 1N4750PE3/TR12 reliable?
The price and inventory of 1N4750PE3/TR12 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N4750PE3/TR12 is usually 5 days.
3.What payment methods are accepted for 1N4750PE3/TR12?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N4750PE3/TR12 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N4750PE3/TR12?
1N4750PE3/TR12 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N4750PE3/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 1N4750PE3/TR12?
For technical support, including 1N4750PE3/TR12 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N4750PE3/TR12 requirements.
6.How does Aetrix verify that 1N4750PE3/TR12 is sourced from the original manufacturer or authorized distributors?
All 1N4750PE3/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 1N4750PE3/TR12 meets industry standards.
7.What is the process for return or replacement of 1N4750PE3/TR12?
All 1N4750PE3/TR12 units undergo pre-shipment inspection (PSI). If there is an issue with 1N4750PE3/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 1N4750PE3/TR12 part is unused and in its original packaging.
Return procedure for 1N4750PE3/TR12:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N4750PE3/TR12 Tags
-
MMBZ5240B-7-F
Diodes Incorporated
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BZT52C5V6T-7
Diodes Incorporated
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MMSZ5231B-7-F
Diodes Incorporated
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BZT52C15-7-F
Diodes Incorporated
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BZX84C3V3LT1G
onsemi
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MMSZ5245BS-7-F
Diodes Incorporated
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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
Micro Commercial Co
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BZT52C3V6LP-7
Diodes Incorporated
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SMAZ12-13-F
Diodes Incorporated
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