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Microchip Technology 1N4754APE3/TR12
- Part No.:
- 1N4754APE3/TR12
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
1N4754APE3/TR12.pdf
- Description:
- DIODE ZENER 39V 1W DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:8,807
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Product details
Overview
1N4754APE3/TR12 from Microsemi is a 1.0 W, 39 V ±5% axial-lead Zener diode in DO-41 plastic package, rated for 6.5 mA test current, 23 Ω dynamic impedance at IZT, and 1000 mA maximum regulator current at TA = 50°C. It delivers stable voltage regulation in power supply reference, overvoltage protection, and precision biasing circuits across industrial temperature range.
For engineers reviewing the 1N4754APE3/TR12 datasheet, 1N4754APE3/TR12 pinout, 1N4754APE3/TR12 application, or 1N4754APE3/TR12 equivalent, key selection criteria include Zener voltage tolerance (±5%), thermal resistance (45°C/W junction-to-lead), surge current rating (1000 mA), RoHS-compliant matte-tin plating, and tape-and-reel packaging per EIA-296.
Technical Context
This discrete Zener diode operates in reverse breakdown to maintain a stable 39 V reference across a wide current range (IZK = 0.25 mA to IZM = 1000 mA) with low dynamic impedance (23 Ω at 6.5 mA). Its DO-41 package provides axial-leaded mounting and achieves 45°C/W junction-to-lead thermal resistance at 10 mm lead length.
It exhibits a nominal temperature coefficient near +0.08%/°C (derived from Figure 3), supports 1.2 V max forward voltage at 200 mA, and complies with MIL-STD-750 Method 1020 for ESD insensitivity. Moisture sensitivity level is IPC/JEDEC J-STD-020B Level 1 - no dry pack required.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 39 V ±5% at IZT = 6.5 mA - defines primary regulation setpoint with tight production control |
| Power Dissipation | 1.0 W at TL ≤ 105°C - limits continuous operation without derating on lead heatsinking |
| Dynamic Impedance (ZZT) | 23 Ω at IZT = 6.5 mA - determines output voltage stability under load transients |
| Max Regulator Current (IZM) | 1000 mA at TA = 50°C - sets upper safe operating current before thermal runaway |
| Thermal Resistance | 45°C/W junction-to-lead (3/8″ lead length) - enables thermal design using lead as heat path |
| Reverse Leakage | 5 μA max at VR = 29.7 V - ensures minimal quiescent current in standby regulation |
| Surge Current (ISM) | 1000 mA (½-sine, 1/120 s) - withstands short-duration overvoltage events |
Pinout & Package
DO-41 (DO-204AL) plastic axial-lead package with cathode indicated by colored 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 positive rail; Zener breakdown occurs when cathode is ≥39 V above anode |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC-registered 1N4754A series | Ensures cross-manufacturer compatibility and standardized electrical behavior per industry baseline |
| Plastic P-suffix construction | Delivers lower thermal resistance vs. glass-body (G-suffix) variants, improving power handling in compact layouts |
| RoHS-compliant "e3" suffix | Meets EU Directive 2011/65/EU with annealed matte-tin plating, eliminating lead-based solder concerns |
| Tape-and-reel "TR12" packaging | Enables automated SMT-compatible placement despite axial-lead form factor via carrier tape standard EIA-296 |
| MIL-STD-750 ESD robustness | Withstands electrostatic discharge without parameter shift or failure - critical for manual handling and board assembly |
Applications
| Power Supply Reference | Overvoltage Clamp |
|---|---|
Use Scenario: Stabilizing feedback node in linear regulator or switching converter error amplifier. IC Role / Device Role / Timing Role: Provides precise 39 V reference voltage for comparator or op-amp input. Use Value: Maintains ±5% regulation accuracy over 0.25–1000 mA current range, minimizing output drift due to load variation. | Use Scenario: Protecting downstream ICs from transient voltage spikes on 36 V DC bus lines. IC Role / Device Role / Timing Role: Shunts excess energy to ground when bus exceeds 39 V, limiting peak clamping voltage. Use Value: Withstands 1000 mA surge current (1/120 s), absorbing up to 1.0 W continuously without degradation. |
| Bias Voltage Generator | Current Source Stabilizer |
Use Scenario: Establishing fixed gate bias for high-side MOSFET drivers in motor control H-bridges. IC Role / Device Role / Timing Role: Supplies stable 39 V bias to driver IC input, independent of main rail fluctuations. Use Value: Low 23 Ω dynamic impedance ensures <100 mV deviation under 10 mA load changes, preserving timing margin. | Use Scenario: Setting reference voltage for constant-current LED driver ICs requiring >30 V compliance. IC Role / Device Role / Timing Role: Defines upper voltage limit for current-sense amplifier feedback loop. Use Value: 39 V ±5% tolerance and <5 μA leakage at 29.7 V enable sub-1% current accuracy over temperature. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4754A | No "e3" RoHS suffix; Sn/Pb terminations; same VZ, IZT, ZZT, and package | Not compliant with EU RoHS Directive 2011/65/EU; requires leaded solder process | Select only for legacy leaded-assembly environments where RoHS exemption applies |
| MMBZ5267BS-7-F | SOT-23 surface-mount package; 39 V ±5%; 200 mW rating; 30 Ω ZZT at 10 mA | Lower power (0.2 W), higher ZZT, unsuitable for >200 mA loads or high-surge scenarios | Choose for space-constrained PCBs where 1.0 W dissipation is not required |
Compared with 1N4754A (leaded variant) and MMBZ5267BS-7-F (SMT 0.2 W), the 1N4754APE3/TR12 uniquely combines full 1.0 W capability, RoHS compliance, tape-and-reel automation support, and proven DO-41 thermal performance - making it optimal for industrial power rails requiring robust, compliant, and manufacturable regulation.
Availability
1N4754APE3/TR12 is available at Aetrix Electronics and suitable for industrial power supplies, telecom line cards, and automotive body-control modules requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant sourcing.
Supply support for 1N4754APE3/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 1N4754APE3/TR12 belongs to Microsemi's legacy 1N47xxAP Zener diode family, engineered for ruggedized voltage regulation in harsh-environment power systems where thermal stability, surge resilience, and long-term parametric consistency are critical.
FAQ
What is the Zener voltage tolerance for 1N4754APE3/TR12?
The 1N4754APE3/TR12 has a nominal Zener voltage of 39 V with a ±5% tolerance, as confirmed by its "A" suffix per JEDEC registration. This means the actual measured VZ falls between 37.05 V and 40.95 V at IZT = 6.5 mA and TL = 25°C. The tolerance is guaranteed across the full operating temperature range of –65°C to +150°C.
Does 1N4754APE3/TR12 support automated assembly?
Yes, the "TR12" suffix indicates EIA-296-compliant tape-and-reel packaging optimized for pick-and-place equipment. The DO-41 axial-lead form factor is carrier-mounted to enable high-throughput placement, and the matte-tin plating ensures reliable solder wetting with both leaded and lead-free reflow profiles.
What is the maximum steady-state power dissipation for 1N4754APE3/TR12?
The 1N4754APE3/TR12 is rated for 1.0 W steady-state power dissipation at lead temperature (TL) ≤ 105°C with 10 mm lead length from body, or at ambient temperature (TA) ≤ 45°C when mounted on FR4 with specified copper pad geometry. Derating is required above these temperatures per Figure 1 in the datasheet.
How does the thermal resistance of 1N4754APE3/TR12 compare to glass-body variants?
The "P" suffix denotes plastic encapsulation, which provides lower thermal resistance than glass-body ("G") versions of the same JEDEC number. Specifically, 1N4754APE3/TR12 achieves 45°C/W junction-to-lead (vs. ~60°C/W typical for glass), enabling higher sustained power in thermally constrained designs without forced cooling.
Is 1N4754APE3/TR12 suitable for overvoltage protection in 36 V automotive systems?
Yes - the 39 V Zener voltage provides appropriate headroom above nominal 36 V rail while clamping transients effectively. With 1000 mA surge current rating (½-sine, 1/120 s) and 1.0 W continuous dissipation, the 1N4754APE3/TR12 meets ISO 7637-2 pulse 1/2/5a requirements when used with proper series impedance, and its –65°C to +150°C operating range covers full automotive under-hood conditions.
1N4754APE3/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):
- 39 V
- Tolerance:
- ±5%
- Power - Max:
- 1 W
- Impedance (Max) (Zzt):
- 60 Ohms
- Current - Reverse Leakage @ Vr:
- 5 µA @ 29.7 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)
1N4754APE3/TR12 FAQ
1.How can I place an order for 1N4754APE3/TR12 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N4754APE3/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 1N4754APE3/TR12 reliable?
The price and inventory of 1N4754APE3/TR12 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N4754APE3/TR12 is usually 5 days.
3.What payment methods are accepted for 1N4754APE3/TR12?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N4754APE3/TR12 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N4754APE3/TR12?
1N4754APE3/TR12 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N4754APE3/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 1N4754APE3/TR12?
For technical support, including 1N4754APE3/TR12 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N4754APE3/TR12 requirements.
6.How does Aetrix verify that 1N4754APE3/TR12 is sourced from the original manufacturer or authorized distributors?
All 1N4754APE3/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 1N4754APE3/TR12 meets industry standards.
7.What is the process for return or replacement of 1N4754APE3/TR12?
All 1N4754APE3/TR12 units undergo pre-shipment inspection (PSI). If there is an issue with 1N4754APE3/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 1N4754APE3/TR12 part is unused and in its original packaging.
Return procedure for 1N4754APE3/TR12:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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