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Microchip Technology 1N4735APE3/TR8
- Part No.:
- 1N4735APE3/TR8
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
1N4735APE3/TR8.pdf
- Description:
- DIODE ZENER 6.2V 1W DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:4,770
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Product details
Overview
1N4735APE3/TR8 from Microsemi is a 1.0 W, 6.2 V ±5% axial-lead silicon Zener diode in DO-41 (DO-204AL) plastic package, rated for 41 mA test current, 2 Ω dynamic impedance at IZT, and 700 mA maximum regulator current at TA = 50°C. It delivers stable voltage regulation in power supply reference, overvoltage protection, and biasing circuits across industrial temperature range.
For engineers reviewing the 1N4735APE3/TR8 datasheet, 1N4735APE3/TR8 pinout, 1N4735APE3/TR8 application, or 1N4735APE3/TR8 equivalent, key selection criteria include its 6.2 V nominal Zener voltage, 1.0 W steady-state power dissipation at TL < 105°C, 45 °C/W junction-to-lead thermal resistance, and RoHS-compliant matte-tin plating - all critical for thermal reliability and compliance-driven designs.
Technical Context
This discrete Zener diode operates in reverse breakdown to maintain a stable 6.2 V reference across a wide current range (1–700 mA), with sharp knee characteristics verified by dual-point Zener impedance measurement per MicroNote 202. Its DO-41 plastic package provides lower thermal resistance than glass-body variants and meets IPC/JEDEC J-STD-020B Level 1 moisture sensitivity without dry pack.
Designed for axial-lead through-hole mounting, it features cathode band polarity marking, 1.2 V max forward voltage at 200 mA, and is rated for 260 °C soldering (10 s). The "e3" suffix confirms RoHS compliance; "TR8" denotes EIA-296 tape-and-reel packaging with 8 mm carrier tape width.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 6.2 V ±5% at IZT = 41 mA, TL = 25°C - defines precise regulation point for reference and clamp circuits |
| Power Dissipation | 1.0 W at TL < 105°C (3/8″ lead length) - sets maximum continuous thermal load without derating |
| Dynamic Impedance (ZZT) | 2 Ω at IZT = 41 mA - ensures low AC ripple transmission and tight regulation under varying load |
| Max Regulator Current (IZM) | 700 mA at TA = 50°C - determines peak clamping capability before thermal runaway |
| Thermal Resistance (RθJL) | 45 °C/W junction-to-lead - enables accurate thermal design using lead temperature as proxy for junction temp |
| Reverse Leakage (IR) | 10 μA max at VR = 3 V - guarantees minimal quiescent current in standby or high-impedance bias networks |
| Operating Temperature | −65°C to +150°C - supports deployment in automotive under-hood, industrial control, and aerospace environments |
Pinout & Package
Package: DO-41 (JEDEC DO-204AL), axial-lead plastic molded epoxy case (UL94V-0), 0.7 g weight, cathode indicated by colored band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (unbanded end) | Current sink in reverse bias | Connected to circuit ground or lower-potential node during Zener operation |
| Cathode (banded end) | Regulated output node | Provides stable 6.2 V reference when reverse-biased; must be held positive relative to anode |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC-registered 1N47xxAP series | Industry-standard footprint and electrical behavior - ensures direct compatibility with legacy designs and PCB footprints |
| RoHS-compliant "e3" termination | Matte-tin plating per MIL-STD-750 Method 2026 - eliminates lead content while maintaining solderability and corrosion resistance |
| Level 1 moisture sensitivity | No dry pack required per IPC/JEDEC J-STD-020B - reduces handling cost and simplifies SMT line integration |
| Nonsensitive to ESD | Qualified per MIL-STD-750 Method 1020 - enables safe handling in standard assembly environments without special grounding protocols |
| Tape-and-reel "TR8" option | EIA-296 compliant 8 mm carrier tape - supports automated pick-and-place for high-volume production |
Applications
| Power Supply Reference | Overvoltage Clamp |
|---|---|
Use Scenario: Stabilizing feedback voltage in linear regulator circuits or providing precision bias for op-amp comparators. IC Role / Device Role / Timing Role: Voltage reference element establishing fixed DC potential independent of input variation. Use Value: Delivers 6.2 V ±5% stability over 1–700 mA operating range, minimizing output drift due to load or line changes. | Use Scenario: Protecting downstream ICs from transient voltage spikes on 5 V or 12 V rails. IC Role / Device Role / Timing Role: Shunt protection device that conducts excess energy to ground when rail exceeds 6.2 V. Use Value: Limits clamping voltage to ≤6.2 V + IZM × ZZT ≈ 7.6 V, preventing latch-up or damage in sensitive logic interfaces. |
| Bias Network Stabilizer | Temperature-Compensated Reference |
Use Scenario: Setting stable base-emitter or gate-source bias points in amplifier stages or sensor front-ends. IC Role / Device Role / Timing Role: Fixed-voltage anchor in resistive divider networks to counteract transistor parameter spread. Use Value: Maintains bias point within ±5% across −65°C to +150°C, reducing gain drift and offset error in analog signal chains. | Use Scenario: Paired with complementary diodes or thermistors to generate temperature-stable references. IC Role / Device Role / Timing Role: Primary Zener element whose 6.2 V nominal value exhibits near-zero temperature coefficient when operated near IZK. Use Value: Enables construction of <±50 ppm/°C references using its known TC curve (Figure 3), critical for precision instrumentation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4735A (non-e3, non-TR) | Same electrical specs but Sn/Pb terminations and bulk packaging - not RoHS-compliant and requires manual loading | Suitable only for legacy non-RoHS production or prototyping where lead-free is not mandated | Select only if environmental compliance and automated assembly are not required |
| MMSZ4702T1G (ON Semiconductor) | Surface-mount SOD-123 package, 6.2 V ±5%, 500 mW rating, 3 Ω ZZT - lower power and different thermal profile | Used in space-constrained PCBs where through-hole mounting is impractical | Choose for compact layouts; verify thermal margin given 50% lower power rating and higher RθJA |
Compared with 1N4735APE3/TR8, the 1N4735A lacks RoHS compliance and tape-and-reel support, limiting modern manufacturing use; MMSZ4702T1G offers SMT compatibility but requires derating for equivalent power handling and thermal management redesign.
Availability
1N4735APE3/TR8 is available at Aetrix Electronics and suitable for power supply reference, overvoltage protection, and bias network stabilization requiring stable component supply, full RoHS compliance, and automated assembly readiness.
Supply support for 1N4735APE3/TR8 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 timing solutions for aerospace, defense, and industrial markets.
The 1N47xxAP Zener series was engineered for ruggedized voltage regulation in mission-critical systems, emphasizing thermal robustness, JEDEC standardization, and extended temperature operation - not general-purpose consumer use.
FAQ
What is the Zener voltage tolerance of the 1N4735APE3/TR8?
The 1N4735APE3/TR8 has a nominal Zener voltage of 6.2 V with a tolerance of ±5%, as indicated by the "A" suffix in the part number per Microsemi's JEDEC-registered specification. This tolerance is measured at 41 mA test current and 25°C lead temperature, and applies across the full operating temperature range of −65°C to +150°C.
Does the 1N4735APE3/TR8 require dry packing before reflow soldering?
No, the 1N4735APE3/TR8 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 ambient conditions without baking or humidity-controlled packaging prior to soldering.
What is the maximum surge current rating for the 1N4735APE3/TR8?
The 1N4735APE3/TR8 has a maximum surge current (ISM) rating of 700 mA, measured using a ½-sine wave pulse of 1/120 second duration at 25°C ambient. This rating reflects short-duration transient energy absorption capability during overvoltage events.
Can the 1N4735APE3/TR8 be used in surface-mount designs?
No - the 1N4735APE3/TR8 uses a DO-41 axial-lead package intended for through-hole mounting. For surface-mount equivalents, consider Microsemi's MLL4735A or ON Semiconductor's MMSZ4702T1G, which share the same 6.2 V rating but differ in package, power rating, and thermal performance.
What does the "TR8" suffix mean in 1N4735APE3/TR8?
The "TR8" suffix indicates EIA-296-compliant tape-and-reel packaging with an 8 mm carrier tape width, designed for automated pick-and-place equipment. It confirms factory-loaded reels with standardized orientation, quantity per reel, and leader/trailer dimensions for high-volume manufacturing.
1N4735APE3/TR8 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:
- ±5%
- 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)
1N4735APE3/TR8 FAQ
1.How can I place an order for 1N4735APE3/TR8 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N4735APE3/TR8 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 1N4735APE3/TR8 reliable?
The price and inventory of 1N4735APE3/TR8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N4735APE3/TR8 is usually 5 days.
3.What payment methods are accepted for 1N4735APE3/TR8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N4735APE3/TR8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N4735APE3/TR8?
1N4735APE3/TR8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N4735APE3/TR8 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 1N4735APE3/TR8?
For technical support, including 1N4735APE3/TR8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N4735APE3/TR8 requirements.
6.How does Aetrix verify that 1N4735APE3/TR8 is sourced from the original manufacturer or authorized distributors?
All 1N4735APE3/TR8 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 1N4735APE3/TR8 meets industry standards.
7.What is the process for return or replacement of 1N4735APE3/TR8?
All 1N4735APE3/TR8 units undergo pre-shipment inspection (PSI). If there is an issue with 1N4735APE3/TR8, 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 1N4735APE3/TR8 part is unused and in its original packaging.
Return procedure for 1N4735APE3/TR8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N4735APE3/TR8 Tags
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Diodes Incorporated
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BZT52C5V6T-7
Diodes Incorporated
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MMSZ5231B-7-F
Diodes Incorporated
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BZX84C3V3LT1G
onsemi
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MMSZ4682T1G
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MM5Z5V1ST1G
onsemi
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