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Microchip Technology 1N5350CE3/TR8
- Part No.:
- 1N5350CE3/TR8
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- T-18, Axial
- Datasheet:
-
1N5350CE3/TR8.pdf
- Description:
- DIODE ZENER 13V 5W T18
- Quantity:
- Payment:
- Shipping:
Inventory:3,360
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Product details
Overview
1N5350CE3/TR8 from Microsemi is a 5 W axial-leaded silicon Zener diode with nominal regulation voltage of 13 V, ±2% tolerance (C suffix), 100 mA maximum regulator current (IZM), 2.5 Ω maximum dynamic impedance (ZZ), and 0.25 V maximum voltage regulation (ΔVZ) - used for precision voltage reference and overvoltage protection in DC power supplies.
For engineers reviewing the 1N5350CE3/TR8 datasheet, 1N5350CE3/TR8 pinout, 1N5350CE3/TR8 application, or 1N5350CE3/TR8 equivalent, key selection criteria include Zener voltage tolerance, thermal resistance (25 °C/W junction-to-lead), surge current rating (75 A), RoHS compliance (e3 suffix), and tape-and-reel packaging (TR8 suffix).
Technical Context
This device operates as a reverse-biased voltage reference with stable regulation across 10%–50% of IZM (10–50 mA). Its low dynamic impedance (2.5 Ω) and tight ±2% VZ tolerance ensure minimal output variation under load and temperature shifts.
Designed for through-hole mounting on FR4 PCBs or lead-soldered heat sinking, it delivers 5 W steady-state power at TL < 25 °C (3/8″ lead length) and supports transient surge currents up to 75 A (8.3 ms half-sine), meeting industrial and telecom power rail protection requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 13 V ±2% - precise reference point for feedback loops in regulated DC-DC converters |
| Power Dissipation | 5.0 W at TL < 25 °C - requires minimum 3/8″ lead length from body for full rating |
| Max Regulator Current (IZM) | 100 mA - defines upper operating limit before thermal runaway without heatsink |
| Dynamic Impedance (ZZ) | 2.5 Ω max at IZT = 100 mA - ensures <26 mV output shift per 10 mA load change |
| Voltage Regulation (ΔVZ) | 0.25 V max - difference between VZ measured at 10% and 50% of IZM |
| Surge Current (IZSM) | 75 A peak (8.3 ms half-sine) - withstands lightning-induced transients in telecom line cards |
| Thermal Resistance | 25 °C/W junction-to-lead - enables direct lead soldering to copper pour for thermal management |
Pinout & Package
Package: Axial-leaded T-18 plastic case (Void-free UL94V-0 epoxy), cathode indicated by band; RoHS-compliant matte-tin plating; weight 0.7 g; moisture sensitivity Level 1 (no dry pack required).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential node in reverse-bias regulation configuration |
| Cathode (banded end) | Zener breakdown terminal | Connected to higher-potential node; reverse voltage applied here for regulation |
Key Features
| Feature | Design Value |
|---|---|
| ±2% Zener voltage tolerance | Enables high-accuracy voltage references without external trimming in 12 V system rails |
| RoHS-compliant (e3 suffix) | Meets EU Directive 2011/65/EU; tin-lead plating replaced with annealed matte-tin |
| Tape-and-reel packaging (TR8 suffix) | Standard EIA-296 format; supports automated SMT placement of axial components via carrier tape |
| Low dynamic knee impedance (ZZK ≤ 500 Ω @ 1 mA) | Ensures stable turn-on behavior near threshold, critical for low-current bias networks |
| Nonsensitive to ESD (MIL-STD-750 Method 1020) | Withstands human-body-model discharges without parameter shift - simplifies handling in assembly |
Applications
| Industrial Power Supply Reference | Telecom Line Card Surge Protection |
|---|---|
Use Scenario: Stabilizing feedback voltage in isolated 12 V DC-DC converters for PLC I/O modules. IC Role / Device Role / Timing Role: Zener diode providing precise 13 V reference to optocoupler input circuitry. Use Value: ±2% tolerance and 0.25 V ΔVZ maintain <1% output voltage drift across -40°C to +85°C ambient. | Use Scenario: Clamping induced surges on -48 V telecom battery backup lines. IC Role / Device Role / Timing Role: Shunt protector diverting transient energy above 13 V to ground during lightning events. Use Value: 75 A surge rating and 25 °C/W thermal resistance enable repeated 8.3 ms transients without degradation. |
| Automotive Body Control Module | Test Equipment Voltage Calibration |
Use Scenario: Regulating auxiliary 13.5 V supply for microcontroller peripherals in BCMs. IC Role / Device Role / Timing Role: Primary voltage reference for LDO input stage in 12 V vehicle electrical systems. Use Value: Low ZZ (2.5 Ω) minimizes load-induced ripple, supporting clean 50 kHz PWM switching noise immunity. | Use Scenario: Serving as traceable 13 V calibration standard in benchtop multimeter test fixtures. IC Role / Device Role / Timing Role: Stable shunt reference enabling 0.02% absolute accuracy verification. Use Value: Tight ±2% tolerance and <0.25 V regulation delta meet ANSI/NCSL Z540-1 metrology requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5350B | ±5% VZ tolerance (B suffix), same VZ=13 V, IZM=100 mA, ZZ=2.5 Ω | Lower accuracy reference; suitable where cost > precision | Select when ±5% regulation suffices and RoHS compliance is not required |
| SMBJ5350CE3 | Surface-mount SMB package, same 13 V ±2%, 5 W rating, but 85 °C/W junction-to-ambient | Requires PCB thermal relief; no axial leads for manual prototyping | Choose for automated assembly where board space is constrained and thermal pad design is feasible |
Compared with 1N5350B and SMBJ5350CE3, the 1N5350CE3/TR8 uniquely combines RoHS compliance, ±2% tolerance, axial-leaded ease-of-use, and tape-and-reel automation support - making it optimal for mid-volume industrial power designs requiring traceability and precision.
Availability
1N5350CE3/TR8 is available at Aetrix Electronics and suitable for industrial power supply reference, telecom line card surge protection, and automotive body control module applications requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant sourcing.
Supply support for 1N5350CE3/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 and mixed-signal components for aerospace, defense, and industrial markets.
The 1N53xx series was designed specifically for ruggedized 5 W Zener regulation in harsh-environment power systems - emphasizing thermal robustness, surge resilience, and MIL-qualified screening options.
FAQ
What is the Zener voltage tolerance of the 1N5350CE3/TR8?
The 1N5350CE3/TR8 has a Zener voltage tolerance of ±2%, denoted by the "C" suffix in its part number. This means its regulated voltage falls within 12.74 V to 13.26 V at 100 mA test current and 25 °C lead temperature. The tighter tolerance supports precision feedback networks where ±5% devices like the 1N5350B would introduce excessive output variation.
How is the 1N5350CE3/TR8 packaged for automated assembly?
The 1N5350CE3/TR8 uses EIA-296 standard tape-and-reel packaging (indicated by "TR8" suffix), containing 800 units per reel. This format enables compatibility with pick-and-place machines configured for axial-leaded components, supporting high-throughput manufacturing while preserving the mechanical robustness of through-hole mounting.
What is the maximum surge current rating for the 1N5350CE3/TR8?
The 1N5350CE3/TR8 is rated for a peak non-recurrent surge current (IZSM) of 75 A, defined as an 8.3 ms half-sine waveform. This capability allows the device to absorb transient energy from inductive switching or lightning-induced surges in telecom and industrial power interfaces without parametric shift or failure.
Does the 1N5350CE3/TR8 require dry-pack moisture protection?
No, the 1N5350CE3/TR8 has IPC/JEDEC J-STD-020B moisture sensitivity Level 1, meaning it is not hygroscopic and does not require dry-packaging or baking prior to soldering. Its void-free thermosetting epoxy body inherently resists moisture absorption, simplifying handling and reflow processes.
What is the thermal resistance specification for the 1N5350CE3/TR8?
The 1N5350CE3/TR8 has a thermal resistance of 25 °C/W junction-to-lead when measured at 3/8″ (10 mm) lead length from the body. This low value enables effective heat dissipation through the leads into copper pours or chassis mounts, allowing full 5 W operation without additional heatsinks under controlled lead-temperature conditions.
1N5350CE3/TR8 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- T-18, Axial
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Voltage - Zener (Nom) (Vz):
- 13 V
- Tolerance:
- ±2%
- Power - Max:
- 5 W
- Impedance (Max) (Zzt):
- 2.5 Ohms
- Current - Reverse Leakage @ Vr:
- 1 µA @ 9.4 V
- Voltage - Forward (Vf) (Max) @ If:
- 1.2 V @ 1 A
- Operating Temperature:
- -65°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- T-18
1N5350CE3/TR8 FAQ
1.How can I place an order for 1N5350CE3/TR8 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5350CE3/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 1N5350CE3/TR8 reliable?
The price and inventory of 1N5350CE3/TR8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5350CE3/TR8 is usually 5 days.
3.What payment methods are accepted for 1N5350CE3/TR8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5350CE3/TR8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5350CE3/TR8?
1N5350CE3/TR8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5350CE3/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 1N5350CE3/TR8?
For technical support, including 1N5350CE3/TR8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5350CE3/TR8 requirements.
6.How does Aetrix verify that 1N5350CE3/TR8 is sourced from the original manufacturer or authorized distributors?
All 1N5350CE3/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 1N5350CE3/TR8 meets industry standards.
7.What is the process for return or replacement of 1N5350CE3/TR8?
All 1N5350CE3/TR8 units undergo pre-shipment inspection (PSI). If there is an issue with 1N5350CE3/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 1N5350CE3/TR8 part is unused and in its original packaging.
Return procedure for 1N5350CE3/TR8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N5350CE3/TR8 Tags
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MM5Z5V1ST1G
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