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Microchip Technology 1N4735CPE3/TR12
- Part No.:
- 1N4735CPE3/TR12
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
1N4735CPE3/TR12.pdf
- Description:
- DIODE ZENER 6.2V 1W DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:5,974
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Product details
Overview
1N4735CPE3/TR12 from Microsemi is a 6.2 V, ±2% tolerance, 1 W silicon Zener diode in DO-41 plastic package, rated for 41 mA test current, 2 Ω dynamic impedance at IZT, and 700 mA maximum regulator current at 50°C. It provides stable voltage regulation in power supply reference and overvoltage protection circuits.
For engineers reviewing the 1N4735CPE3/TR12 datasheet, 1N4735CPE3/TR12 pinout, 1N4735CPE3/TR12 application, or 1N4735CPE3/TR12 equivalent, key selection criteria include Zener voltage tolerance (±2%), thermal resistance (45°C/W junction-to-lead), surge current rating (730 mA), RoHS-compliant matte-tin plating, and tape-and-reel packaging (TR12).
Technical Context
This device operates in reverse-biased breakdown mode to maintain a stable 6.2 V reference across a wide current range (1–700 mA). Its 2 Ω dynamic impedance at 41 mA ensures low output variation under load transients.
The DO-41 package delivers 45°C/W junction-to-lead thermal resistance at 10 mm lead length, enabling reliable 1 W dissipation up to 105°C lead temperature. It meets MIL-STD-750 ESD immunity (Method 1020) and IPC/JEDEC J-STD-020B moisture sensitivity Level 1.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 6.2 V ±2% at 41 mA - tight tolerance enables precision reference design without trimming |
| Power Dissipation | 1.0 W at TL < 105°C - supports continuous regulation in compact linear supplies |
| Dynamic Impedance (ZZT) | 2 Ω at IZT = 41 mA - minimizes output voltage shift during current changes |
| Max Regulator Current (IZM) | 700 mA at TA = 50°C - defines safe operating envelope for shunt regulation |
| Thermal Resistance | 45°C/W junction-to-lead - dictates heatsinking requirement for sustained 1 W operation |
| Reverse Leakage | 10 μA max at VR = 4.96 V - ensures low standby power in high-impedance bias networks |
| Surge Current (ISM) | 730 mA (½-sine, 1/120 s) - withstands transient overloads without degradation |
Pinout & Package
DO-41 (DO-204AL) axial-leaded plastic 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 | Forward conduction terminal / Zener cathode reference ground | Connected to circuit ground or lower-potential node when used as shunt regulator |
| Cathode | Zener breakdown terminal / regulated output node | Banded end; connected to unregulated input; maintains 6.2 V relative to anode |
Key Features
| Feature | Design Value |
|---|---|
| ±2% Zener voltage tolerance (C suffix) | Enables direct use in precision references without external calibration or trimming |
| RoHS-compliant matte-tin plating (e3 suffix) | Ensures lead-free assembly compatibility and long-term solderability per MIL-STD-750 |
| Tape-and-reel packaging (TR12 suffix) | Supports automated SMT placement despite axial form factor via carrier tape handling |
| Moisture sensitivity Level 1 | Eliminates dry-pack requirement and floor-life constraints for production handling |
| Nonsensitive to ESD (MIL-STD-750 Method 1020) | Reduces handling precautions and eliminates need for ESD-protected workstations |
Applications
| Power Supply Reference | Overvoltage Clamp |
|---|---|
Use Scenario: Stabilizing feedback voltage in linear regulators or op-amp reference circuits. IC Role / Device Role / Timing Role: Shunt voltage reference providing fixed 6.2 V reference point. Use Value: ±2% tolerance and 2 Ω dynamic impedance ensure <±15 mV output variation across 10–100 mA load current. | Use Scenario: Protecting downstream ICs from transient voltage spikes on DC rails. IC Role / Device Role / Timing Role: Crowbar element clamping rail voltage at 6.2 V during overvoltage events. Use Value: 730 mA surge rating allows absorption of short-duration energy bursts without failure. |
| Signal Level Shifting | Current Source Bias |
Use Scenario: Generating offset voltages for analog sensor interfaces or ADC inputs. IC Role / Device Role / Timing Role: Precision voltage source establishing known DC bias level. Use Value: Low 2 Ω impedance maintains stable offset even with varying source impedance up to 1 kΩ. | Use Scenario: Setting constant current in LED driver or transistor bias networks. IC Role / Device Role / Timing Role: Voltage reference defining emitter/base voltage drop in current mirror configurations. Use Value: 1 W power rating supports >100 mA bias currents with adequate thermal margin 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 |
|---|---|---|---|
| 1N4735A | Same 6.2 V nominal, but ±5% tolerance (A suffix) instead of ±2% | Acceptable where reference accuracy <±3% suffices; lower cost | Select 1N4735A only if system-level calibration or wider tolerance bands accommodate ±5% drift |
| BZX84-C6V2 | SOT-23 surface-mount package; same 6.2 V ±5%, 300 mW rating | Used in space-constrained PCBs; unsuitable for 1 W continuous dissipation | Choose BZX84-C6V2 only for low-power, high-density layouts where thermal budget limits dissipation to ≤300 mW |
Compared with 1N4735A and BZX84-C6V2, the 1N4735CPE3/TR12 uniquely combines ±2% tolerance, 1 W power handling, and tape-and-reel readiness-making it optimal for precision, high-reliability through-hole power supply designs requiring no post-assembly trimming.
Availability
1N4735CPE3/TR12 is available at Aetrix Electronics and suitable for industrial power supplies, telecom line cards, and test equipment requiring stable component supply, consistent Zener voltage tolerance, and RoHS-compliant manufacturing.
Supply support for 1N4735CPE3/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 robust, high-stability voltage regulation in mission-critical power systems where long-term parameter drift and thermal resilience are essential.
FAQ
What is the Zener voltage tolerance of the 1N4735CPE3/TR12?
The 1N4735CPE3/TR12 has a Zener voltage tolerance of ±2%, denoted by the "C" suffix in its part number. This means its measured breakdown voltage at 41 mA test current falls within 6.076 V to 6.324 V at 25°C lead temperature. This tighter tolerance supports precision reference applications without external adjustment and is confirmed in Microsemi's official 1N4728AP–1N4764AP datasheet Rev C.
Does the 1N4735CPE3/TR12 meet RoHS requirements?
Yes, the 1N4735CPE3/TR12 complies with RoHS Directive 2011/65/EU, as indicated by the "e3" suffix. Its terminations use annealed matte-tin plating instead of tin-lead, and it is certified per MIL-STD-750 Method 2026 for solderability. The device is also moisture sensitivity Level 1 per J-STD-020B, eliminating dry-pack requirements.
What is the maximum continuous power dissipation for the 1N4735CPE3/TR12?
The 1N4735CPE3/TR12 is rated for 1.0 W steady-state power dissipation at lead temperature (TL) below 105°C with 10 mm lead length from the body. Derating begins above that temperature at 11.1 mW/°C, per Figure 1 in the Microsemi datasheet. On FR4 board with specified copper pads, full 1 W operation is limited to ambient temperatures below 45°C.
How is polarity marked on the 1N4735CPE3/TR12?
The 1N4735CPE3/TR12 uses a cathode band (typically black or dark stripe) near one end of the DO-41 package to indicate polarity. For proper Zener regulation, the banded end must be held at a higher potential than the unbanded (anode) end. Forward voltage is ≤1.2 V at 200 mA, confirming standard silicon diode behavior in forward bias.
What does the "TR12" suffix mean in 1N4735CPE3/TR12?
The "TR12" suffix indicates tape-and-reel packaging per EIA-296 standard, with 12,000 units per reel. This format enables automated pick-and-place insertion for through-hole assembly lines, despite the DO-41 axial lead configuration. The "TR" denotes tape-and-reel; "12" specifies reel quantity-not voltage, tolerance, or thermal grade.
1N4735CPE3/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):
- 6.2 V
- Tolerance:
- ±2%
- Power - Max:
- 1 W
- Impedance (Max) (Zzt):
- 2 Ohms
- Current - Reverse Leakage @ Vr:
- 10 µA @ 3 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)
1N4735CPE3/TR12 FAQ
1.How can I place an order for 1N4735CPE3/TR12 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N4735CPE3/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 1N4735CPE3/TR12 reliable?
The price and inventory of 1N4735CPE3/TR12 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N4735CPE3/TR12 is usually 5 days.
3.What payment methods are accepted for 1N4735CPE3/TR12?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N4735CPE3/TR12 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N4735CPE3/TR12?
1N4735CPE3/TR12 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N4735CPE3/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 1N4735CPE3/TR12?
For technical support, including 1N4735CPE3/TR12 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N4735CPE3/TR12 requirements.
6.How does Aetrix verify that 1N4735CPE3/TR12 is sourced from the original manufacturer or authorized distributors?
All 1N4735CPE3/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 1N4735CPE3/TR12 meets industry standards.
7.What is the process for return or replacement of 1N4735CPE3/TR12?
All 1N4735CPE3/TR12 units undergo pre-shipment inspection (PSI). If there is an issue with 1N4735CPE3/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 1N4735CPE3/TR12 part is unused and in its original packaging.
Return procedure for 1N4735CPE3/TR12:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N4735CPE3/TR12 Tags
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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
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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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