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Microchip Technology 1N4754CP/TR12
- Part No.:
- 1N4754CP/TR12
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
1N4754CP/TR12.pdf
- Description:
- DIODE ZENER 39V 1W DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:2,057
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Product details
Overview
1N4754CP/TR12 from Microsemi is a 1.0 W axial-lead silicon Zener diode with nominal Zener voltage of 39 V, ±5% tolerance (A suffix), plastic DO-41 package, and rated for operation from –65 °C to +150 °C. It regulates voltage in power supply reference and overvoltage protection circuits where stable breakdown under reverse bias is required at up to 115 mA maximum regulator current.
For engineers reviewing the 1N4754CP/TR12 datasheet, 1N4754CP/TR12 pinout, 1N4754CP/TR12 application, or 1N4754CP/TR12 equivalent, key selection criteria include Zener voltage (39 V), test current (6.5 mA), dynamic impedance (60 Ω at IZT), maximum regulator current (115 mA), and thermal resistance (45 °C/W junction-to-lead).
Technical Context
This discrete Zener diode operates in reverse-biased breakdown mode to maintain a stable reference voltage across its terminals. Its 39 V nominal Zener voltage is specified at 6.5 mA test current with 60 Ω dynamic impedance, and it supports up to 115 mA steady-state regulation current at lead temperature <105 °C.
The device uses a void-free thermosetting epoxy body (UL94V-0), tin-lead or RoHS-compliant matte-tin plating, and features moisture sensitivity level 1 per J-STD-020B-no dry pack required. Cathode polarity is marked by a band; operation requires cathode positive relative to anode.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 39 V ±5% at 6.5 mA - defines stable regulation point for feedback or clamping |
| Power Dissipation | 1.0 W at 25 °C - sets maximum continuous reverse power handling before thermal derating |
| Dynamic Impedance (ZZT) | 60 Ω at 6.5 mA - indicates voltage stability under small-signal AC load variations |
| Maximum Regulator Current (IZM) | 115 mA at TL ≤ 105 °C - determines max DC current for sustained regulation without overheating |
| Thermal Resistance (RθJL) | 45 °C/W junction-to-lead - enables thermal design using 3/8″ (10 mm) lead length as heatsink path |
| Reverse Leakage (IR) | 5 μA at 29.7 V - ensures low standby current in high-impedance bias networks |
| Forward Voltage | 1.2 V max at 200 mA - defines conduction drop when used in forward-biased protection paths |
Pinout & Package
Package: DO-41 (DO-204AL) plastic axial-lead package with cathode band marking; 0.7 g weight; UL94V-0 epoxy body; tin-lead or RoHS-compliant matte-tin terminations.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Reverse-bias reference return node | Connected to lower-potential side of regulated circuit; forms reference ground for Zener operation |
| Cathode | Zener regulation output terminal | Banded end; connected to higher-potential side; maintains 39 V relative to anode under reverse bias |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC-registered 1N47xxA series | Industry-standard footprint and electrical behavior-ensures board-level interoperability and sourcing continuity |
| Plastic DO-41 construction (P suffix) | Lower thermal resistance (45 °C/W) vs. glass-body variants-improves power handling in compact layouts |
| Moisture Sensitivity Level 1 | No dry pack required per J-STD-020B-reduces handling cost and simplifies SMT reflow prep |
| RoHS-compliant option (e3 suffix) | Meets EU Directive 2011/65/EU with annealed matte-tin plating-supports green manufacturing requirements |
| Nonsensitive to ESD | Qualified per MIL-STD-750 Method 1020-enables safe handling without special static controls |
Applications
| Power Supply Reference | Overvoltage Clamp |
|---|---|
Use Scenario: Stabilizing feedback voltage in linear regulator or switching converter error amplifiers. IC Role / Device Role / Timing Role: Provides precise 39 V reference for comparator or op-amp input. Use Value: Enables accurate output voltage setpoint with <±5% initial tolerance and low dynamic impedance (60 Ω) for minimal load-induced drift. | Use Scenario: Protecting downstream ICs from transient voltage spikes on 36–42 V rail systems. IC Role / Device Role / Timing Role: Shunts excess energy to ground when rail exceeds 39 V breakdown threshold. Use Value: Limits peak voltage to 39 V ±5% with 115 mA surge capability-prevents latch-up or damage in industrial control inputs. |
| Voltage Monitor Threshold | Signal-Level Translation |
Use Scenario: Detecting undervoltage or overvoltage conditions in battery management or backup power circuits. IC Role / Device Role / Timing Role: Acts as precision threshold detector via comparator input tied to cathode. Use Value: Delivers repeatable 39 V trip point with <5 μA leakage at 29.7 V-minimizes false triggers in high-impedance sensing nodes. | Use Scenario: Biasing or clamping analog signal paths operating near 39 V rails (e.g., sensor excitation, DAC output protection). IC Role / Device Role / Timing Role: Clamps signal swing to prevent exceeding 39 V absolute maximum ratings of downstream components. Use Value: Maintains signal integrity with 60 Ω dynamic impedance-limits distortion during fast transients while absorbing up to 115 mA. |
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 TR12 tape-and-reel packaging; bulk or ammo pack only | Same electrical specs but lacks standardized reel delivery for automated assembly | Select 1N4754CP/TR12 for SMT line compatibility; choose 1N4754A for manual prototyping or low-volume hand soldering |
| MMBZ5267BS | SOT-23 surface-mount package; 39 V ±5%, 200 mW rating; 100 Ω ZZT | Lower power and smaller footprint-suited for space-constrained PCBs but not direct replacement for axial-lead layout | Choose MMBZ5267BS only when board area is critical and thermal budget allows 200 mW; retain 1N4754CP/TR12 for 1 W dissipation needs |
Compared with 1N4754A and MMBZ5267BS, the 1N4754CP/TR12 offers full 1 W power handling in JEDEC-standard DO-41 packaging with tape-and-reel delivery-making it optimal for industrial power supplies requiring robust, automatable voltage reference solutions.
Availability
1N4754CP/TR12 is available at Aetrix Electronics and suitable for industrial power supplies, telecom voltage supervisors, and automotive body-control modules requiring stable component supply with traceable RoHS compliance and automated placement support.
Supply support for 1N4754CP/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, mixed-signal, and RF components for aerospace, defense, and industrial markets.
The 1N47xxA Zener series was designed for general-purpose voltage regulation and clamping in ruggedized power systems-emphasizing thermal robustness, JEDEC standardization, and long-term parametric stability.
FAQ
What is the Zener voltage tolerance for 1N4754CP/TR12?
The 1N4754CP/TR12 has a nominal Zener voltage of 39 V with ±5% tolerance, indicated by the "A" suffix in the part number per Microsemi's documentation. This tolerance applies at 6.5 mA test current and 25 °C lead temperature. The "P" denotes plastic DO-41 packaging, and "TR12" specifies EIA-296 tape-and-reel packaging with 12 mm tape width.
Can 1N4754CP/TR12 be used in surface-mount designs?
No-1N4754CP/TR12 uses a DO-41 axial-lead package and is not compatible with surface-mount assembly processes. For SMT equivalents, consider Microsemi's SMAJ4754A or MLL4754A, which share the same 39 V ±5% Zener specification but use DO-214AC and SOD-123 packages respectively.
What is the maximum continuous current for 1N4754CP/TR12?
The maximum regulator current (IZM) for 1N4754CP/TR12 is 115 mA at lead temperature ≤105 °C. This value assumes 3/8″ (10 mm) lead length from the body acting as a thermal path. At ambient temperatures above 45 °C on FR4 board, derating applies per Figure 1 in the datasheet.
Does 1N4754CP/TR12 meet RoHS requirements?
Yes-1N4754CP/TR12 includes the "e3" suffix per Microsemi's documentation, indicating RoHS-compliant annealed matte-tin plating. It meets EU Directive 2011/65/EU and is exempt from lead content restrictions under Annex III, category 7a (high-melting-temperature solder).
How is polarity marked on 1N4754CP/TR12?
The cathode of 1N4754CP/TR12 is marked by a visible band on the plastic DO-41 body. For proper Zener regulation, the banded (cathode) end must be held at a higher potential than the anode. Forward conduction occurs at ≤1.2 V, but regulation only functions in reverse bias.
1N4754CP/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:
- ±2%
- 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)
1N4754CP/TR12 FAQ
1.How can I place an order for 1N4754CP/TR12 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N4754CP/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 1N4754CP/TR12 reliable?
The price and inventory of 1N4754CP/TR12 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N4754CP/TR12 is usually 5 days.
3.What payment methods are accepted for 1N4754CP/TR12?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N4754CP/TR12 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N4754CP/TR12?
1N4754CP/TR12 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N4754CP/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 1N4754CP/TR12?
For technical support, including 1N4754CP/TR12 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N4754CP/TR12 requirements.
6.How does Aetrix verify that 1N4754CP/TR12 is sourced from the original manufacturer or authorized distributors?
All 1N4754CP/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 1N4754CP/TR12 meets industry standards.
7.What is the process for return or replacement of 1N4754CP/TR12?
All 1N4754CP/TR12 units undergo pre-shipment inspection (PSI). If there is an issue with 1N4754CP/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 1N4754CP/TR12 part is unused and in its original packaging.
Return procedure for 1N4754CP/TR12:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N4754CP/TR12 Tags
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