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Microchip Technology 1N4750APE3/TR12
- Part No.:
- 1N4750APE3/TR12
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
1N4750APE3/TR12.pdf
- Description:
- DIODE ZENER 27V 1W DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:8,502
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Product details
Overview
1N4750APE3/TR12 from Microsemi is a 27 V, 1 W axial-lead Zener diode in DO-41 plastic package with ±5% voltage tolerance, 9.5 mA test current, and 35 Ω dynamic impedance at IZT, used for precision voltage regulation in power supply reference and overvoltage protection circuits.
For engineers reviewing the 1N4750APE3/TR12 datasheet, 1N4750APE3/TR12 pinout, 1N4750APE3/TR12 application, or 1N4750APE3/TR12 equivalent, key selection factors include Zener voltage accuracy, thermal resistance (45 °C/W junction-to-lead), surge current rating (750 mA), RoHS-compliant matte-tin plating, and tape-and-reel packaging (TR12).
Technical Context
This device operates in reverse breakdown to maintain stable 27 V output across 1.0–150 mA regulation current range, with temperature coefficient near +10 mV/°C per Figure 3. Its DO-41 package enables axial mounting on FR4 PCBs with defined thermal performance: 105 °C/W junction-to-ambient under standard layout conditions.
It features a sharp knee in the Zener characteristic (verified by dual-point ZZK measurement at 0.25 mA), low forward voltage (≤1.2 V @ 200 mA), and ESD insensitivity per MIL-STD-750 Method 1020 - enabling use in unregulated DC rails and analog reference nodes without additional protection.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 27 V ±5% at 9.5 mA - defines regulated output level for feedback references and clamp thresholds |
| Power Dissipation | 1.0 W at TL < 105 °C - limits continuous current to ~37 mA at 27 V without derating |
| Dynamic Impedance | 35 Ω at IZT = 9.5 mA - determines output voltage variation under load transients |
| Max Reverse Current | 5 μA at VR = 20.6 V - ensures low leakage below regulation threshold |
| Surge Current (ISM) | 750 mA (½-sine, 1/120 s) - supports transient overvoltage clamping in power inputs |
| Thermal Resistance | 45 °C/W junction-to-lead (3/8″ lead length) - guides heatsinking for sustained operation |
| Operating Temp | −65 °C to +150 °C - suitable for industrial and automotive under-hood environments |
Pinout & Package
DO-41 (DO-204AL) plastic axial-leaded 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 end | Connected to lower-potential node; carries forward current or sink current during Zener conduction |
| Cathode | Banded end | Connected to higher-potential node; Zener regulation occurs with cathode positive relative to anode |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC-registered Zener | Complies with industry-standard 1N47xxAP mechanical and electrical specifications for interchangeability |
| RoHS-compliant "e3" suffix | Matte-tin terminal plating meets EU RoHS Directive 2011/65/EU and JEDEC J-STD-609A Class 3 |
| Tape-and-reel packaging | TR12 denotes EIA-296 compliant 12 mm tape, enabling automated SMT placement despite axial form factor |
| Moisture sensitivity Level 1 | No dry pack required per IPC/JEDEC J-STD-020B - simplifies handling and storage logistics |
| Nonsensitive to ESD | Qualified per MIL-STD-750 Method 1020 - eliminates need for ESD-safe workstations in assembly |
Applications
| Power Supply Reference | Overvoltage Clamp |
|---|---|
Use Scenario: Stabilizing feedback voltage in linear regulator circuits or ADC reference dividers. IC Role / Device Role / Timing Role: Zener diode providing fixed 27 V reference point for error amplifier input. Use Value: Maintains ±5% regulation over 1–150 mA current range and −65 °C to +150 °C ambient, reducing calibration drift. | Use Scenario: Protecting downstream ICs from input voltage surges in 24 V industrial control systems. IC Role / Device Role / Timing Role: Shunt clamp absorbing transient energy above 27 V threshold. Use Value: Limits peak voltage to ≤27.5 V with 750 mA surge capability, preventing latch-up in microcontrollers. |
| Signal Level Translation | Analog Sensor Biasing |
Use Scenario: Converting 3.3 V logic signals to 27 V interface levels for legacy industrial sensors. IC Role / Device Role / Timing Role: Zener-based level shifter establishing high-side bias rail. Use Value: Provides stable 27 V rail with 35 Ω dynamic impedance, minimizing signal distortion during switching transitions. | Use Scenario: Supplying precise bias voltage to piezoresistive pressure sensor bridges. IC Role / Device Role / Timing Role: Low-drift Zener reference source for bridge excitation. Use Value: Delivers 27 V ±5% with <5 μA leakage at 20.6 V, ensuring sensor full-scale accuracy unaffected by reference drift. |
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 "e3" RoHS suffix; Sn/Pb terminations; same VZ, IZT, ZZT, and package | Not suitable for RoHS-compliant production; requires Pb-containing solder process | Select when legacy Pb-based assembly is mandated and environmental compliance is not required |
| BZX79-C27 | Same 27 V ±5%, but 400 mW rating; DO-35 glass package; higher ZZT (70 Ω) | Lower power handling limits continuous current to ~15 mA; less robust thermal performance | Choose only for space-constrained designs where 1 W dissipation is unnecessary and DO-35 fits footprint |
Compared with 1N4750A and BZX79-C27, the 1N4750APE3/TR12 offers RoHS compliance, 1 W power rating, and superior thermal resistance (45 °C/W vs. >200 °C/W for DO-35), making it optimal for industrial power rails requiring long-term reliability and regulatory adherence.
Availability
1N4750APE3/TR12 is available at Aetrix Electronics and suitable for industrial power supplies, overvoltage protection circuits, and analog reference designs requiring stable component supply with full traceability and lifecycle support.
Supply support for 1N4750APE3/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 1N47xxAP series was designed specifically for general-purpose voltage regulation in cost-sensitive yet thermally demanding applications, balancing JEDEC standardization with enhanced plastic-package thermal performance.
FAQ
What is the Zener voltage tolerance of the 1N4750APE3/TR12?
The 1N4750APE3/TR12 has a nominal Zener voltage of 27 V with a tolerance of ±5%, as indicated by the "A" suffix in the part number per Microsemi's registered JEDEC specification. This tolerance applies at 9.5 mA test current and 25 °C lead temperature. The "e3" suffix confirms RoHS-compliant matte-tin plating but does not affect voltage tolerance.
Does the 1N4750APE3/TR12 require dry packing before PCB assembly?
No, the 1N4750APE3/TR12 is moisture sensitivity Level 1 per IPC/JEDEC J-STD-020B, meaning it may be stored and assembled without dry pack or baking. Its void-free epoxy body and RoHS-compliant plating ensure stability under standard factory humidity conditions, eliminating moisture-related popcorning risk during reflow.
What is the maximum surge current rating for the 1N4750APE3/TR12?
The 1N4750APE3/TR12 is rated for a maximum non-repetitive reverse surge current (ISM) of 750 mA, measured using a ½-sine wave pulse of 1/120 second duration at 25 °C ambient. This rating supports transient clamping in 24 V industrial power inputs where short-duration overvoltages may exceed 27 V.
Can the 1N4750APE3/TR12 be used in surface-mount designs?
While the 1N4750APE3/TR12 itself is an axial-leaded DO-41 device, its TR12 tape-and-reel packaging enables automated pick-and-place assembly onto through-hole pads. For true SMT implementation, Microsemi offers surface-mount equivalents such as SMAJ4750A and MLL4750A - neither of which share the same pinout or thermal profile as the 1N4750APE3/TR12.
What is the thermal resistance of the 1N4750APE3/TR12 when mounted on a standard FR4 PCB?
When mounted on a standard FR4 PCB (1 oz Cu) with 4 mm² copper pads and 1 mm track width, the 1N4750APE3/TR12 exhibits a junction-to-ambient thermal resistance of 105 °C/W. This value assumes specified layout conditions and is critical for calculating safe operating current under elevated ambient temperatures.
1N4750APE3/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:
- ±5%
- 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)
1N4750APE3/TR12 FAQ
1.How can I place an order for 1N4750APE3/TR12 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N4750APE3/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 1N4750APE3/TR12 reliable?
The price and inventory of 1N4750APE3/TR12 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N4750APE3/TR12 is usually 5 days.
3.What payment methods are accepted for 1N4750APE3/TR12?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N4750APE3/TR12 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N4750APE3/TR12?
1N4750APE3/TR12 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N4750APE3/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 1N4750APE3/TR12?
For technical support, including 1N4750APE3/TR12 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N4750APE3/TR12 requirements.
6.How does Aetrix verify that 1N4750APE3/TR12 is sourced from the original manufacturer or authorized distributors?
All 1N4750APE3/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 1N4750APE3/TR12 meets industry standards.
7.What is the process for return or replacement of 1N4750APE3/TR12?
All 1N4750APE3/TR12 units undergo pre-shipment inspection (PSI). If there is an issue with 1N4750APE3/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 1N4750APE3/TR12 part is unused and in its original packaging.
Return procedure for 1N4750APE3/TR12:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N4750APE3/TR12 Tags
-
MMBZ5240B-7-F
Diodes Incorporated
-
BZT52C5V6T-7
Diodes Incorporated
-
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
-
MMSZ4682T1G
onsemi
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BZT52C15S-7-F
Diodes Incorporated
-
MM5Z5V1ST1G
onsemi
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SMAJ4744A-TP
Micro Commercial Co
-
BZT52C3V6LP-7
Diodes Incorporated
-
SMAZ12-13-F
Diodes Incorporated
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