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Microchip Technology 1PMT5938E3/TR7
- Part No.:
- 1PMT5938E3/TR7
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-216AA
- Datasheet:
-
1PMT5938E3/TR7.pdf
- Description:
- DIODE ZENER 36V 3W DO216AA
- Quantity:
- Payment:
- Shipping:
Inventory:2,654
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Product details
Overview
1PMT5938E3/TR7 from Microsemi is a 36 V, ±5% tolerance surface-mount Zener diode in the Powermite® 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 and regulator feedback paths.
For engineers reviewing the 1PMT5938E3/TR7 datasheet, 1PMT5938E3/TR7 pinout, 1PMT5938E3/TR7 application, or 1PMT5938E3/TR7 equivalent, key selection criteria include zener voltage tolerance, thermal resistance (30°C/W junction-to-TAB), ESD rating (>16 kV HBM), DO-216 mechanical outline, and tape-and-reel packaging per EIA-481.
Technical Context
This Zener diode operates in reverse breakdown mode to maintain stable voltage across its terminals under varying load or line conditions. Its Powermite® package features a full metallic bottom and integral heat sink locking tab, enabling efficient thermal conduction from junction to PCB via TAB 1 - the cathode terminal - with measured thermal resistance of 30°C/W.
The device exhibits low knee impedance (ZZK = 0.25 Ω) and tight regulation at IZT = 10.4 mA, with reverse leakage capped at 1 µA up to VR = 27.4 V. It is specified for junction temperatures from –55°C to +150°C and supports automated SMT assembly without flux entrapment risk.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 36 V ±5% at IZT = 10.4 mA, TL = 30°C - defines clamping/reference level in voltage regulation circuits |
| Power Dissipation | 3.0 W at TAB 1 = 60°C - maximum continuous DC power handled with defined thermal mounting |
| Dynamic Impedance (ZZT) | 38 Ω at IZT = 10.4 mA - determines output voltage variation under load current changes |
| Reverse Leakage (IR) | <1 µA at VR = 27.4 V - ensures minimal standby current in high-impedance bias networks |
| Thermal Resistance | 30°C/W junction-to-TAB 1 - quantifies temperature rise per watt dissipated when TAB 1 is thermally anchored |
| ESD Rating | >16 kV per Human Body Model - supports robust handling in automated manufacturing and field environments |
| Package | DO-216 (Powermite®) - surface-mount molded package with full metallic bottom and cathode-marking TAB 1 |
Pinout & Package
Package: DO-216 (Powermite®), surface-mount, molded plastic body with full metallic bottom and integral heat sink locking tab. Cathode is designated by TAB 1; anode is the opposing lead. Mounting orientation is unrestricted.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| TAB 1 | Cathode | Primary heat path and voltage reference node; must be soldered to copper pour for thermal management |
| Lead 2 | Anode | Current entry point during forward bias; reverse-biased connection for zener operation |
Key Features
| Feature | Design Value |
|---|---|
| Surface-mount Powermite® package | Enables high-density PCB layout while delivering 3.0 W power handling comparable to larger through-hole Zeners |
| Full metallic bottom | Eliminates solder flux entrapment during reflow, improving long-term reliability and solder joint integrity |
| Integral heat sink locking tab | Provides direct thermal conduction path from junction to PCB, reducing thermal resistance to 30°C/W |
| ESD robustness | >16 kV HBM rating allows safe handling in automated insertion and board-level assembly without added protection |
Applications
| DC Power Rail Clamping | Voltage Reference for Feedback Loops |
|---|---|
Use Scenario: Protecting 3.3 V or 5 V logic rails against transient overvoltage events in industrial controllers. IC Role / Device Role / Timing Role: Zener clamping element placed between rail and ground to shunt excess energy above 36 V threshold. Use Value: Limits voltage excursion to safe levels using 36 V breakdown, leveraging 3.0 W power rating to absorb short-duration surges without failure. | Use Scenario: Providing stable reference voltage to error amplifier inputs in isolated DC-DC converters. IC Role / Device Role / Timing Role: Precision voltage reference source in optocoupler feedback network. Use Value: Delivers 36 V ±5% stability with low ZZT (38 Ω) to minimize regulation error across load and temperature variations. |
| Overvoltage Protection in Telecom Line Cards | Threshold Detection in Battery Management |
Use Scenario: Safeguarding interface ICs on telecom line cards exposed to lightning-induced surges. IC Role / Device Role / Timing Role: Primary overvoltage clamp on analog signal lines before protection ICs or ADC inputs. Use Value: Activates at 36 V with fast response and 3.0 W surge capability, backed by >16 kV HBM ESD rating for system-level robustness. | Use Scenario: Detecting battery pack overvoltage condition in 3S Li-ion systems (nominal 12.6 V, max ~13.2 V). IC Role / Device Role / Timing Role: Zener-based comparator input threshold setpoint in discrete protection circuitry. Use Value: Provides repeatable 36 V trigger point with low IR (<1 µA) to avoid loading sensitive sense nodes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5357B | Same 36 V nominal VZ, but in DO-204AL (DO-41) through-hole package; 5 W rating; higher ZZT (40 Ω); no metallic bottom or locking tab | Requires through-hole mounting and larger board area; less suitable for high-density SMT designs | Select 1N5357B only if legacy through-hole compatibility or higher power margin is required |
| BZX84-C36 | 36 V ±5%, SOT-23 package; 300 mW rating; ZZT ≈ 90 Ω; no thermal tab; 15 kV HBM ESD rating | Limited to low-power bias/reference use; cannot sustain 3.0 W dissipation or match thermal performance | Choose BZX84-C36 only for space-constrained, low-current applications where thermal load is negligible |
Compared with 1N5357B and BZX84-C36, the 1PMT5938E3/TR7 uniquely combines SMT compatibility, 3.0 W power handling, 30°C/W thermal resistance, and >16 kV ESD robustness - making it optimal for industrial power rail protection where both density and thermal resilience are critical.
Availability
1PMT5938E3/TR7 is available at Aetrix Electronics and suitable for industrial power supplies, telecom line card protection, and battery management systems requiring stable component supply with consistent Zener voltage tolerance and thermal performance.
Supply support for 1PMT5938E3/TR7 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 radiation-hardened components for aerospace, defense, and industrial markets.
The Powermite® Zener series, including the 1PMT5938E3/TR7, was designed for high-power-density surface-mount voltage regulation and transient suppression in harsh-environment power systems.
FAQ
What is the Zener voltage tolerance for 1PMT5938E3/TR7?
The 1PMT5938E3/TR7 has a standard Zener voltage tolerance of ±5% at 36 V, measured at IZT = 10.4 mA and TAB temperature of 30°C. Tighter tolerances (±2% and ±1%) are available with suffixes C and D respectively, but the E3/TR7 variant specifies ±5%. This tolerance directly impacts regulation accuracy in feedback and clamping circuits.
How is thermal management implemented for 1PMT5938E3/TR7?
Thermal management for the 1PMT5938E3/TR7 relies on its Powermite® package design: TAB 1 serves as the cathode and primary thermal path, with a specified junction-to-TAB thermal resistance of 30°C/W. Effective cooling requires soldering TAB 1 to a minimum 100 mm² copper pour on the PCB. The full metallic bottom and locking tab enhance conduction, enabling 3.0 W dissipation at TAB = 60°C.
Is 1PMT5938E3/TR7 compatible with automated SMT assembly?
Yes, the 1PMT5938E3/TR7 is fully compatible with automated SMT assembly. Its Powermite® package features a unique locking tab that aids pick-and-place alignment, and its full metallic bottom prevents solder flux entrapment during reflow. It ships in EIA-481-compliant tape-and-reel format (7-inch reel, 3,000 pieces), supporting high-throughput placement without process modification.
What is the maximum reverse leakage current for 1PMT5938E3/TR7?
The maximum reverse leakage current (IR) for 1PMT5938E3/TR7 is 1 µA at VR = 27.4 V and TL = 30°C. This low leakage ensures minimal parasitic current draw in high-impedance reference or sensing circuits, preserving accuracy in battery-powered or precision analog applications where standby current matters.
Does 1PMT5938E3/TR7 meet any industry reliability standards?
Yes, the 1PMT5938E3/TR7 is manufactured under ISO 9001-certified processes and qualified for operation across –55°C to +150°C junction temperature range. It carries an ESD rating exceeding 16 kV per Human Body Model (HBM), validated per ANSI/ESDA/JEDEC JS-001, supporting robustness in manufacturing and end-use environments.
1PMT5938E3/TR7 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:
- ±20%
- 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
1PMT5938E3/TR7 FAQ
1.How can I place an order for 1PMT5938E3/TR7 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1PMT5938E3/TR7 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 1PMT5938E3/TR7 reliable?
The price and inventory of 1PMT5938E3/TR7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1PMT5938E3/TR7 is usually 5 days.
3.What payment methods are accepted for 1PMT5938E3/TR7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1PMT5938E3/TR7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1PMT5938E3/TR7?
1PMT5938E3/TR7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1PMT5938E3/TR7 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 1PMT5938E3/TR7?
For technical support, including 1PMT5938E3/TR7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1PMT5938E3/TR7 requirements.
6.How does Aetrix verify that 1PMT5938E3/TR7 is sourced from the original manufacturer or authorized distributors?
All 1PMT5938E3/TR7 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 1PMT5938E3/TR7 meets industry standards.
7.What is the process for return or replacement of 1PMT5938E3/TR7?
All 1PMT5938E3/TR7 units undergo pre-shipment inspection (PSI). If there is an issue with 1PMT5938E3/TR7, 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 1PMT5938E3/TR7 part is unused and in its original packaging.
Return procedure for 1PMT5938E3/TR7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1PMT5938E3/TR7 Tags
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MMBZ5240B-7-F
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