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Microchip Technology 1N5352CE3/TR8
- Part No.:
- 1N5352CE3/TR8
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- T-18, Axial
- Datasheet:
-
1N5352CE3/TR8.pdf
- Description:
- DIODE ZENER 15V 5W T18
- Quantity:
- Payment:
- Shipping:
Inventory:9,471
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Product details
Overview
1N5352CE3/TR8 from Microsemi is a 5 W axial-leaded silicon Zener diode with nominal regulation voltage of 15 V, ±2% tolerance (C suffix), 2.5 Ω maximum dynamic impedance at 75 mA test current, and 6.3 A maximum Zener current when adequately heat-sunk. It operates across –65°C to +150°C and is used for precision voltage reference and overvoltage protection in industrial power supplies.
For engineers reviewing the 1N5352CE3/TR8 datasheet, 1N5352CE3/TR8 pinout, 1N5352CE3/TR8 application, or 1N5352CE3/TR8 equivalent, key selection criteria include Zener voltage tolerance, thermal resistance (25 °C/W junction-to-lead), surge current rating (6.3 A), and RoHS-compliant matte-tin plating per MIL-STD-750.
Technical Context
This device functions as a two-terminal voltage regulator operating in reverse breakdown mode. Its Zener voltage is specified at 75 mA test current (IZT) with 2.5 Ω dynamic impedance (ZZ), and it maintains regulation across 10–50% of IZM with ≤0.25 V voltage regulation (ΔVZ).
It features low thermal resistance (25 °C/W junction-to-lead at 10 mm lead length), enabling stable operation at high DC currents when mounted with adequate heat sinking. The cathode is marked by a band, and polarity must be observed: banded end positive relative to the anode.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 15 V ±2% - precise regulation point for reference and clamping circuits |
| Test Current (IZT) | 75 mA - standardized bias condition for VZ measurement and impedance characterization |
| Dynamic Impedance (ZZ) | 2.5 Ω max - low AC resistance ensures minimal voltage shift under varying load current |
| Max Zener Current (IZM) | 6.3 A - peak steady-state current achievable with proper heat sinking at TL < 25°C |
| Power Dissipation (PD) | 5.0 W at 25°C - defines thermal design envelope before derating begins |
| Thermal Resistance (RθJL) | 25 °C/W - enables accurate junction temperature estimation from lead temperature |
| Operating Temperature | –65°C to +150°C - supports deployment in harsh industrial and aerospace environments |
Pinout & Package
Package: Axial-leaded T-18 plastic encapsulated case per JEDEC DO-201AD; void-free UL94V-0 epoxy body; cathode indicated by band; RoHS-compliant matte-tin plated leads solderable per MIL-STD-750 Method 2026.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Reverse-biased current sink | Connected to lower-potential node; carries full Zener current during regulation |
| Cathode | Regulated output node | Banded end; referenced voltage appears here; must be held at higher potential than anode |
Key Features
| Feature | Design Value |
|---|---|
| ±2% Zener voltage tolerance | Enables tighter regulation margins in feedback loops without external trimming |
| 25 °C/W junction-to-lead thermal resistance | Allows direct thermal coupling to chassis or heatsink via lead termination |
| 6.3 A maximum Zener current (IZM) | Supports high-energy transient suppression in DC bus protection applications |
| Moisture sensitivity Level 1 (IPC/JEDEC J-STD-020B) | Eliminates dry-pack requirement and floor-life constraints for assembly |
| Nonsensitive to ESD (MIL-STD-750 Method 1020) | Reduces handling precautions and eliminates need for ESD-safe workstations |
Applications
| Industrial Power Supply Regulation | Overvoltage Clamp in DC Motor Drives |
|---|---|
Use Scenario: Stabilizing feedback reference in isolated 24 V/48 V industrial SMPS with wide input variation. IC Role / Device Role / Timing Role: Two-terminal shunt voltage reference providing stable 15 V reference for error amplifier input. Use Value: ±2% tolerance and low ΔVZ (0.25 V) ensure consistent regulation across line/load transients and temperature drift. | Use Scenario: Protecting gate drivers and logic inputs from flyback spikes during motor commutation. IC Role / Device Role / Timing Role: Passive clamp limiting rail voltage to 15.3 V (max) during 8.3 ms surge events. Use Value: 6.3 A IZM and 6.3 A IZSM rating enable reliable energy absorption without degradation. |
| Programmable Logic Controller (PLC) Input Protection | Test Equipment Reference Voltage Source |
Use Scenario: Safeguarding 24 V digital input channels against field-wiring faults and induced surges. IC Role / Device Role / Timing Role: Reverse-biased Zener placed across input terminals to clamp transients before signal conditioning circuitry. Use Value: Low ZZ (2.5 Ω) minimizes clamping voltage overshoot during fast-rising transients. | Use Scenario: Providing stable 15 V reference for calibration circuits in portable multimeters and data loggers. IC Role / Device Role / Timing Role: Precision shunt reference operating at 75 mA with minimal self-heating-induced drift. Use Value: Tight ±2% tolerance and low thermal resistance ensure <±0.5% total error over –25°C to +70°C ambient. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5352B | Same 15 V nominal VZ, but ±5% tolerance (B suffix) and higher ZZ (2.5 Ω vs. same value, but B-grade testing may yield looser typicals) | Acceptable where tighter tolerance not required; lower cost; slightly higher ΔVZ (0.25 V vs. same spec, but B-grade lot variance may exceed C-grade consistency) | Select 1N5352B only if ±5% regulation accuracy suffices and cost sensitivity outweighs long-term stability needs. |
| MMSZ5245BT1G | Surface-mount SOD-123 package; 15 V ±5%; 500 mW rating; ZZ = 16 Ω @ 20 mA - significantly lower power and higher impedance | Not suitable for high-current clamping; limited to low-power bias/reference use; incompatible pinout and thermal interface | Choose MMSZ5245BT1G only for space-constrained PCBs where 500 mW dissipation and 20 mA operation are sufficient. |
Compared with 1N5352B and MMSZ5245BT1G, the 1N5352CE3/TR8 delivers superior thermal performance (25 °C/W vs. >300 °C/W for SOD-123), higher surge capability (6.3 A vs. ~0.5 A), and tighter initial tolerance-making it optimal for industrial-grade 5 W regulation where reliability and power handling are critical.
Availability
1N5352CE3/TR8 is available at Aetrix Electronics and suitable for industrial power supplies, motor drive protection circuits, and programmable logic controller (PLC) input stages requiring stable component supply and long-lifecycle support.
Supply support for 1N5352CE3/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, mixed-signal, and RF solutions for aerospace, defense, and industrial markets.
The 1N53xxB series was designed for ruggedized, high-power voltage regulation in mission-critical systems-emphasizing thermal robustness, surge resilience, and extended temperature operation.
FAQ
What is the Zener voltage tolerance of the 1N5352CE3/TR8?
The 1N5352CE3/TR8 has a Zener voltage tolerance of ±2%, denoted by the "C" suffix in its part number. This means its measured VZ at 75 mA will fall between 14.7 V and 15.3 V at 25°C. This tighter tolerance supports precision regulation tasks where standard ±5% devices would introduce unacceptable error margins in feedback networks or reference paths.
Does the 1N5352CE3/TR8 require dry packing before PCB assembly?
No, the 1N5352CE3/TR8 does not require dry packing. It carries IPC/JEDEC J-STD-020B moisture sensitivity Level 1 classification, meaning it is non-hygroscopic and can be stored and assembled without baking or humidity-controlled handling. This simplifies manufacturing logistics and eliminates floor-life tracking for the 1N5352CE3/TR8 in standard SMT or through-hole processes.
What is the maximum surge current rating for the 1N5352CE3/TR8?
The 1N5352CE3/TR8 has a maximum non-recurrent surge current (IZSM) of 6.3 A, defined as the peak of an 8.3 ms half-sine waveform. This rating reflects its ability to absorb transient energy without failure-critical for protecting downstream circuitry from inductive kickback or lightning-induced surges in industrial control systems using the 1N5352CE3/TR8 as a clamp.
Can the 1N5352CE3/TR8 be used in surface-mount designs?
No, the 1N5352CE3/TR8 is an axial-leaded T-18 package and is not compatible with surface-mount assembly. For SMT equivalents, Microsemi offers the SMBJ5352B (DO-214AA) and SMBG5352B (DO-214AB), both rated for 5 W but requiring different layout and thermal pad design. The 1N5352CE3/TR8 requires through-hole mounting with ≥10 mm lead length for specified thermal resistance.
What is the forward voltage specification for the 1N5352CE3/TR8?
The forward voltage of the 1N5352CE3/TR8 is specified as ≤1.2 V at 1.0 A forward current. While primarily operated in reverse breakdown, this parameter matters during fault conditions (e.g., accidental forward bias) or in dual-role circuits. The low VF helps limit power dissipation and avoids unintended conduction paths when the 1N5352CE3/TR8 is integrated into bidirectional protection schemes.
1N5352CE3/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):
- 15 V
- Tolerance:
- ±2%
- Power - Max:
- 5 W
- Impedance (Max) (Zzt):
- 2.5 Ohms
- Current - Reverse Leakage @ Vr:
- 1 µA @ 10.8 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
1N5352CE3/TR8 FAQ
1.How can I place an order for 1N5352CE3/TR8 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5352CE3/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 1N5352CE3/TR8 reliable?
The price and inventory of 1N5352CE3/TR8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5352CE3/TR8 is usually 5 days.
3.What payment methods are accepted for 1N5352CE3/TR8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5352CE3/TR8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5352CE3/TR8?
1N5352CE3/TR8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5352CE3/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 1N5352CE3/TR8?
For technical support, including 1N5352CE3/TR8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5352CE3/TR8 requirements.
6.How does Aetrix verify that 1N5352CE3/TR8 is sourced from the original manufacturer or authorized distributors?
All 1N5352CE3/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 1N5352CE3/TR8 meets industry standards.
7.What is the process for return or replacement of 1N5352CE3/TR8?
All 1N5352CE3/TR8 units undergo pre-shipment inspection (PSI). If there is an issue with 1N5352CE3/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 1N5352CE3/TR8 part is unused and in its original packaging.
Return procedure for 1N5352CE3/TR8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N5352CE3/TR8 Tags
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