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Microchip Technology 1PMT5938CE3/TR13
- Part No.:
- 1PMT5938CE3/TR13
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-216AA
- Datasheet:
-
1PMT5938CE3/TR13.pdf
- Description:
- DIODE ZENER 36V 3W DO216AA
- Quantity:
- Payment:
- Shipping:
Inventory:8,235
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Product details
Overview
1PMT5938CE3/TR13 from Microsemi is a 36 V, ±5% tolerance Zener diode in Powermite® surface-mount package, rated for 3.0 W DC power dissipation at TAB 1 = 60°C, with 10.4 mA test current (IZT), 38 Ω dynamic impedance (ZZT), and <1 µA reverse leakage at 27.4 V. It serves as a precision voltage reference or overvoltage clamp in DC power rails of industrial control modules.
For engineers reviewing the 1PMT5938CE3/TR13 datasheet, 1PMT5938CE3/TR13 pinout, 1PMT5938CE3/TR13 application, or 1PMT5938CE3/TR13 equivalent, key selection criteria include Zener voltage tolerance, thermal resistance (30°C/W junction-to-TAB), ESD rating (>16 kV HBM), low knee impedance, and compatibility with automated SMT assembly per EIA-481 tape-and-reel packaging.
Technical Context
This Zener diode operates in reverse breakdown mode to regulate or clamp voltage with tight voltage stability under varying load conditions. Its Powermite® package integrates a full metallic bottom and locking tab that functions as both mechanical anchor and thermal path to PCB copper, enabling efficient heat transfer from junction to TAB 1.
The device exhibits low dynamic impedance (38 Ω) at 10.4 mA IZT and maintains <1 µA reverse leakage up to 27.4 V, supporting stable reference performance in low-power sensing and feedback circuits where minimal quiescent current and predictable knee behavior are critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 36 V ±5% - defines clamping threshold for overvoltage protection or reference accuracy in feedback loops |
| Test Current (IZT) | 10.4 mA - operating point where VZ is specified; sets minimum bias current for stable regulation |
| Dynamic Impedance (ZZT) | 38 Ω - determines voltage deviation under load transients; lower value improves regulation fidelity |
| Max Reverse Leakage (IR) | <1 µA at 27.4 V - ensures negligible standby current in battery-powered or high-impedance circuits |
| Power Dissipation | 3.0 W at TAB 1 = 60°C - enables robust operation in compact industrial PCBs without forced cooling |
| Thermal Resistance | 30°C/W junction-to-TAB - quantifies thermal path efficiency; guides copper pour design for thermal management |
| ESD Rating | >16 kV HBM - provides inherent handling robustness during SMT assembly and field operation |
Pinout & Package
Package: Powermite® (DO-216AA), molded surface-mount package with full metallic bottom and integral locking tab; cathode designated by TAB 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| TAB 1 | Cathode | Primary heat-sinking terminal and electrical cathode connection; must be soldered to thermal pad for rated 3.0 W operation |
| Lead 2 | Anode | Standard anode terminal; mounted opposite TAB 1; requires standard SMT reflow profile for DO-216 |
Key Features
| Feature | Design Value |
|---|---|
| Integral heat sink locking tab | Provides mechanical retention during reflow and direct thermal conduction path from junction to PCB copper |
| Full metallic bottom | Eliminates solder flux entrapment risk, improving long-term solder joint reliability in high-reliability assemblies |
| Automated insertion compatibility | Designed for pick-and-place and reflow processes per EIA-481 tape-and-reel (TR13 = 13-inch reel, 12,000 pcs) |
| Low knee impedance | 38 Ω at IZT ensures stable regulation onset and reduced voltage droop during transient loading |
| High ESD immunity | >16 kV HBM rating reduces need for external ESD protection in board-level designs |
Applications
| Industrial Power Supply Feedback | Automotive Body Control Module Clamp |
|---|---|
Use Scenario: Stabilizing error amplifier reference in isolated flyback converter feedback network. IC Role / Device Role / Timing Role: Zener reference diode providing precise 36 V clamp for optocoupler input biasing. Use Value: Tight ±5% VZ tolerance and low ZZT ensure consistent loop gain and output regulation across temperature. | Use Scenario: Protecting microcontroller I/O pins from load-dump transients on 12 V vehicle bus lines. IC Role / Device Role / Timing Role: Overvoltage clamp limiting voltage excursion to ≤36 V during 12 V system surges. Use Value: 3.0 W power rating and 30°C/W thermal resistance allow sustained clamping without thermal runaway. |
| Programmable Logic Controller Input Protection | Medical Sensor Signal Conditioning |
Use Scenario: Safeguarding 24 V digital input circuitry against EFT and surge events per IEC 61000-4-4/5. IC Role / Device Role / Timing Role: Primary transient voltage suppression element shunting excess energy to ground. Use Value: >16 kV HBM ESD rating and low IR (<1 µA) prevent false triggering and leakage-induced offset errors. | Use Scenario: Biasing precision op-amp reference node in low-noise analog front-end for ECG signal acquisition. IC Role / Device Role / Timing Role: Low-noise voltage reference establishing stable 36 V rail for instrumentation amplifier biasing. Use Value: Minimal dynamic impedance (38 Ω) and stable knee behavior reduce reference noise coupling into sensitive analog paths. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5938BRLG | Same 36 V nominal VZ, but ±5% tolerance only; DO-41 through-hole package; no metallic bottom or locking tab | Requires wave soldering or hand assembly; lacks integrated thermal path; unsuitable for high-density SMT layouts | Select when legacy through-hole design or manual prototyping is required; not drop-in compatible |
| BZX84-C36LT1G | 36 V ±5%, SOT-23 package; 350 mW power rating; 60 Ω ZZT; 10x lower power handling than 1PMT5938CE3/TR13 | Limited to low-power signal-level clamping; cannot sustain 3.0 W surges or continuous regulation in power rails | Select for space-constrained signal-path protection only; avoid in power supply feedback or clamp roles requiring >500 mW |
Compared with 1N5938BRLG and BZX84-C36LT1G, the 1PMT5938CE3/TR13 delivers superior thermal performance (30°C/W vs. no spec for DO-41, ~200°C/W for SOT-23), higher surge capability (3.0 W vs. 1.2 W and 0.35 W), and SMT process optimization-making it uniquely suited for industrial-grade power regulation where reliability and thermal margin are critical.
Availability
1PMT5938CE3/TR13 is available at Aetrix Electronics and suitable for industrial power supplies, automotive body electronics, programmable logic controllers, and medical sensor systems requiring stable component supply and long-term manufacturability.
Supply support for 1PMT5938CE3/TR13 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 semiconductor company specializing in high-reliability analog, mixed-signal, and radiation-hardened components for aerospace, defense, and industrial markets.
The Powermite® Zener diode product line was engineered for ruggedized surface-mount voltage regulation in harsh-environment power systems where thermal performance, ESD robustness, and automated assembly compatibility are mandatory.
FAQ
What is the Zener voltage tolerance for 1PMT5938CE3/TR13?
The 1PMT5938CE3/TR13 has a nominal Zener voltage of 36 V with a standard tolerance of ±5%, as confirmed in the MSC0995.PDF datasheet. This tolerance applies at IZT = 10.4 mA and TAB temperature of 30°C. Tighter tolerances (±2%, ±1%) are available with suffixes C and D, but the CE3 variant specifies ±5%.
How is thermal management handled in the 1PMT5938CE3/TR13 package?
The 1PMT5938CE3/TR13 uses the Powermite® package with a full metallic bottom and integral locking tab acting as the cathode (TAB 1). Its specified thermal resistance is 30°C/W junction-to-TAB, meaning effective heat transfer relies on soldering TAB 1 to a thermally robust PCB copper area. This design eliminates flux entrapment and enhances reliability under continuous 3.0 W operation.
Is 1PMT5938CE3/TR13 suitable for automotive applications?
Yes, the 1PMT5938CE3/TR13 supports automotive use cases such as body control module transient clamping due to its -55°C to +150°C junction/storage temperature range, >16 kV HBM ESD rating, and 3.0 W surge capability. It meets requirements for under-hood environments when properly mounted with adequate thermal copper, though AEC-Q200 qualification status must be verified separately per application.
What does the 'TR13' suffix indicate in 1PMT5938CE3/TR13?
The 'TR13' suffix denotes EIA-481 compliant tape-and-reel packaging on a 13-inch reel containing 12,000 units. This format is optimized for high-speed SMT placement equipment. The 'CE3' portion indicates ±5% Zener voltage tolerance and Powermite® packaging; 'TR13' does not affect electrical specifications but defines logistics and assembly compatibility.
Can 1PMT5938CE3/TR13 replace older through-hole Zeners like 1N5938B?
No, the 1PMT5938CE3/TR13 is not a direct replacement for 1N5938B due to fundamental package and thermal differences: it uses DO-216AA surface-mount Powermite® packaging versus DO-41 through-hole, features a metallic thermal tab (TAB 1), and requires SMT reflow-not wave soldering. While electrically similar, PCB layout and assembly process must be redesigned to accommodate the 1PMT5938CE3/TR13.
1PMT5938CE3/TR13 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- DO-216AA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 36 V
- Tolerance:
- ±2%
- Power - Max:
- 3 W
- Impedance (Max) (Zzt):
- 38 Ohms
- Current - Reverse Leakage @ Vr:
- 1 µA @ 27.4 V
- Voltage - Forward (Vf) (Max) @ If:
- 1.2 V @ 200 mA
- Operating Temperature:
- -55°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-216AA
1PMT5938CE3/TR13 FAQ
1.How can I place an order for 1PMT5938CE3/TR13 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1PMT5938CE3/TR13 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 1PMT5938CE3/TR13 reliable?
The price and inventory of 1PMT5938CE3/TR13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1PMT5938CE3/TR13 is usually 5 days.
3.What payment methods are accepted for 1PMT5938CE3/TR13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1PMT5938CE3/TR13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1PMT5938CE3/TR13?
1PMT5938CE3/TR13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1PMT5938CE3/TR13 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 1PMT5938CE3/TR13?
For technical support, including 1PMT5938CE3/TR13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1PMT5938CE3/TR13 requirements.
6.How does Aetrix verify that 1PMT5938CE3/TR13 is sourced from the original manufacturer or authorized distributors?
All 1PMT5938CE3/TR13 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 1PMT5938CE3/TR13 meets industry standards.
7.What is the process for return or replacement of 1PMT5938CE3/TR13?
All 1PMT5938CE3/TR13 units undergo pre-shipment inspection (PSI). If there is an issue with 1PMT5938CE3/TR13, 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 1PMT5938CE3/TR13 part is unused and in its original packaging.
Return procedure for 1PMT5938CE3/TR13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1PMT5938CE3/TR13 Tags
-
MMBZ5240B-7-F
Diodes Incorporated
-
BZT52C5V6T-7
Diodes Incorporated
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MMSZ5231B-7-F
Diodes Incorporated
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BZT52C15-7-F
Diodes Incorporated
-
BZX84C3V3LT1G
onsemi
-
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
onsemi
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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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