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Microchip Technology 1N5350C/TR8
- Part No.:
- 1N5350C/TR8
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- T-18, Axial
- Datasheet:
-
1N5350C/TR8.pdf
- Description:
- DIODE ZENER 13V 5W T18
- Quantity:
- Payment:
- Shipping:
Inventory:9,905
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Product details
Overview
1N5350C/TR8 from Microsemi is a 5 W, 13 V ±2% tolerance axial-leaded silicon Zener diode designed for precision voltage regulation in power supply feedback loops, overvoltage protection circuits, and reference voltage generation. It operates with 100 mA test current (IZT), exhibits 2.5 Ω dynamic impedance (ZZ), and maintains stable regulation across -65°C to +150°C.
For engineers reviewing the 1N5350C/TR8 datasheet, 1N5350C/TR8 pinout, 1N5350C/TR8 application, or 1N5350C/TR8 equivalent, key selection criteria include its ±2% Zener voltage tolerance (C suffix), 100 mA maximum regulator current (IZM), low 2.5 Ω dynamic impedance at IZT, and RoHS-compliant matte-tin plating per MIL-STD-750.
Technical Context
This device functions as a two-terminal voltage reference operating in reverse breakdown. Its 13 V nominal Zener voltage is specified at 100 mA test current (IZT) with tight ±2% tolerance, and it delivers stable regulation under varying load and temperature conditions due to low voltage regulation (ΔVZ = 0.25 V) between 10% and 50% of IZM.
Thermal design relies on junction-to-lead thermal resistance of 25 °C/W at 3/8" lead length, enabling 5 W steady-state dissipation at TL < 25°C. It is moisture-sensitive Level 1 per J-STD-020B and requires no dry pack.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 13.0 V ±2% - precise reference voltage at 100 mA, suitable for feedback sensing in regulated DC-DC converters. |
| Power Dissipation | 5.0 W at TL < 25°C - supports high-current regulation when mounted with adequate lead heat sinking. |
| Dynamic Impedance (ZZ) | 2.5 Ω at IZT = 100 mA - ensures minimal output voltage variation under changing load current. |
| Max Regulator Current (IZM) | 700 mA - maximum continuous reverse current before exceeding 5 W rating at rated VZ. |
| Reverse Leakage (IR) | 1.0 µA max at VR = 10.1 V - guarantees low standby power loss in high-impedance bias networks. |
| Surge Current (IZSM) | 7.0 A peak (8.3 ms half-sine) - withstands transient overvoltage events without degradation. |
| Operating Temperature | -65°C to +150°C - qualified for industrial and automotive under-hood environments. |
Pinout & Package
Package: Axial-leaded T-18 plastic case (Void-free UL94V-0 epoxy), cathode indicated by band. Leads are tin-lead or RoHS-compliant matte-tin plated, solderable per MIL-STD-750 Method 2026. Weight: 0.7 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Reference ground node | Connected to circuit common; reverse-biased operation requires cathode at higher potential. |
| Cathode | Zener breakdown terminal / Regulated output node | Banded end; supplies stable 13 V reference when reverse-biased above VZ with current limiting. |
Key Features
| Feature | Design Value |
|---|---|
| ±2% Zener voltage tolerance (C suffix) | Enables tighter feedback loop accuracy in switching power supplies without external trimming. |
| Low 2.5 Ω dynamic impedance at 100 mA | Reduces output voltage drift under dynamic load changes, improving regulation stability. |
| RoHS-compliant e3 marking | Meets environmental compliance requirements for industrial and commercial PCB assembly. |
| Moisture sensitivity Level 1 | Eliminates dry-pack requirement and floor-life constraints during SMT or manual assembly. |
| Nonsensitive to ESD (MIL-STD-750 Method 1020) | Reduces handling precautions and eliminates need for ESD-protective packaging in logistics. |
Applications
| Switching Power Supply Feedback | Overvoltage Clamp Protection |
|---|---|
Use Scenario: Used in the optocoupler feedback path of an isolated flyback converter to regulate 12 V output. IC Role / Device Role / Timing Role: Precision 13 V reference source setting error amplifier threshold. Use Value: ±2% tolerance ensures output stays within ±3% of nominal under line/load transients. |
Use Scenario: Placed across DC bus rails to limit voltage spikes during motor drive commutation. IC Role / Device Role / Timing Role: Shunt clamping element absorbing surge energy above 13 V. Use Value: 7.0 A surge rating handles 8.3 ms transients without failure or parameter shift. |
| Voltage Reference Generator | Industrial Sensor Excitation |
Use Scenario: Provides stable bias for analog front-end instrumentation amplifiers in data acquisition modules. IC Role / Device Role / Timing Role: Low-drift, low-noise DC reference node for ADC reference buffers. Use Value: 0.25 V voltage regulation (ΔVZ) ensures <0.2% reference error across full operating current range. |
Use Scenario: Supplies excitation voltage to 350 Ω strain gauges in load cell interfaces. IC Role / Device Role / Timing Role: Constant-voltage source maintaining bridge balance under temperature variation. Use Value: -65°C to +150°C operating range supports operation in unheated outdoor enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5350B/TR8 | ±5% Zener tolerance vs. ±2% for 1N5350C/TR8; otherwise identical electrical and thermal specs. | Suitable where looser regulation is acceptable, e.g., non-critical biasing or coarse clamping. | Select 1N5350B/TR8 only if system-level testing confirms ±5% VZ meets stability margin. |
| MMBZ5243B-TP | Surface-mount SOD-123 package (vs. axial T-18); 13 V ±5%, 225 mW Pd (vs. 5 W). | Limited to low-power signal-level referencing; cannot replace 1N5350C/TR8 in power regulation roles. | Choose MMBZ5243B-TP only for space-constrained PCBs where power dissipation ≤225 mW is sufficient. |
Compared with 1N5350B/TR8 and MMBZ5243B-TP, the 1N5350C/TR8 uniquely combines ±2% tolerance, 5 W power handling, and axial-leaded through-hole mounting-making it irreplaceable in high-reliability, medium-power regulation where precision and thermal robustness are jointly required.
Availability
1N5350C/TR8 is available at Aetrix Electronics and suitable for industrial power supplies, automotive body control modules, and test equipment requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for 1N5350C/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 engineered for ruggedized voltage regulation in harsh-environment systems, emphasizing thermal resilience, ESD immunity, and extended temperature operation without derating.
FAQ
What is the Zener voltage tolerance of the 1N5350C/TR8?
The 1N5350C/TR8 has a Zener voltage tolerance of ±2%, as indicated by the "C" suffix in its part number. This means its measured VZ at 100 mA test current falls within 12.74 V to 13.26 V at 25°C. This tighter tolerance enables higher accuracy in feedback and reference applications compared to ±5% (B suffix) or ±10% (A suffix) variants of the same 13 V rating.
What is the maximum continuous reverse current for the 1N5350C/TR8?
The 1N5350C/TR8 supports a maximum regulator current (IZM) of 700 mA at its rated 13 V Zener voltage, assuming proper heat sinking to maintain lead temperature below 25°C. This corresponds to its 5 W power rating (P = VZ × IZM). Exceeding this current without thermal mitigation risks permanent parametric shift or failure.
Does the 1N5350C/TR8 require dry packing before PCB assembly?
No, the 1N5350C/TR8 has IPC/JEDEC moisture sensitivity Level 1 classification, meaning it is not moisture-sensitive and does not require dry packing or floor-life controls prior to soldering. Its void-free thermosetting epoxy package inherently prevents moisture ingress, simplifying handling and storage logistics.
Can the 1N5350C/TR8 be used as a direct replacement for the 1N5350B/TR8?
The 1N5350C/TR8 is not a direct drop-in replacement for the 1N5350B/TR8 in applications requiring ±5% tolerance, because its ±2% tolerance alters the regulation window. While electrically and mechanically identical, substituting it may over-specify the design or cause unexpected behavior in circuits calibrated for wider VZ spread-validation under worst-case conditions is essential.
What is the surge current rating of the 1N5350C/TR8?
The 1N5350C/TR8 is rated for a peak non-recurrent surge current (IZSM) of 7.0 A, defined as the maximum amplitude of an 8.3 ms half-sine waveform. This rating allows the device to absorb transient overvoltages-such as inductive kickback or EFT events-without degradation, provided the surge occurs infrequently and ambient conditions remain within spec.
1N5350C/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
1N5350C/TR8 FAQ
1.How can I place an order for 1N5350C/TR8 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5350C/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 1N5350C/TR8 reliable?
The price and inventory of 1N5350C/TR8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5350C/TR8 is usually 5 days.
3.What payment methods are accepted for 1N5350C/TR8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5350C/TR8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5350C/TR8?
1N5350C/TR8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5350C/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 1N5350C/TR8?
For technical support, including 1N5350C/TR8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5350C/TR8 requirements.
6.How does Aetrix verify that 1N5350C/TR8 is sourced from the original manufacturer or authorized distributors?
All 1N5350C/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 1N5350C/TR8 meets industry standards.
7.What is the process for return or replacement of 1N5350C/TR8?
All 1N5350C/TR8 units undergo pre-shipment inspection (PSI). If there is an issue with 1N5350C/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 1N5350C/TR8 part is unused and in its original packaging.
Return procedure for 1N5350C/TR8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N5350C/TR8 Tags
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MM5Z5V1ST1G
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