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Microchip Technology 1PMT5938/TR13
- Part No.:
- 1PMT5938/TR13
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-216AA
- Datasheet:
-
1PMT5938/TR13.pdf
- Description:
- DIODE ZENER 36V 3W DO216AA
- Quantity:
- Payment:
- Shipping:
Inventory:9,935
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Product details
Overview
1PMT5938B 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, 38 Ω dynamic impedance, and 1 µA max reverse leakage at 27.4 V. It serves as a precision voltage reference or overvoltage clamp in power supply regulation circuits.
For engineers reviewing the 1PMT5938B datasheet, 1PMT5938B pinout, 1PMT5938B application, or 1PMT5938B equivalent, key selection criteria include zener voltage tolerance, thermal resistance (30°C/W junction-to-TAB), ESD rating (>16 kV HBM), low knee impedance (0.25 Ω), and compatibility with automated SMT assembly.
Technical Context
This Zener diode operates in reverse breakdown mode with tightly controlled voltage regulation across its specified test current range. Its Powermite® package features a full metallic bottom and integral heat sink tab (TAB 1), enabling efficient thermal conduction directly to the PCB copper pour.
The device exhibits low reverse leakage (≤1 µA at VR = 27.4 V), stable dynamic impedance (38 Ω at IZT = 10.4 mA), and a defined knee region (IZK = 0.25 mA, ZZK = 850 Ω), supporting reliable clamping and reference performance in low-power analog and power management circuits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 36 V ±5% - precise regulation point at 10.4 mA, suitable for 3.3 V–5 V rail monitoring or 24 V system protection |
| Power Dissipation | 3.0 W at TAB 1 = 60°C - enables high-energy transient suppression without external heatsink |
| Dynamic Impedance (ZZT) | 38 Ω at IZT = 10.4 mA - ensures minimal voltage shift under load variation in feedback networks |
| Knee Impedance (ZZK) | 850 Ω at IZK = 0.25 mA - defines low-current regulation onset for standby-mode voltage references |
| Reverse Leakage (IR) | ≤1 µA at VR = 27.4 V - guarantees negligible quiescent current draw in battery-backed circuits |
| Thermal Resistance | 30°C/W junction-to-TAB1 - allows direct thermal path to PCB ground plane for sustained 3 W operation |
| ESD Rating | >16 kV HBM - provides robust handling during automated placement and board-level integration |
Pinout & Package
Package: Powermite® (DO-216AA) - molded surface-mount package with full metallic bottom and integral heat sink locking tab (TAB 1). Cathode is designated by TAB 1; anode is the opposite terminal. Mounting orientation is unrestricted.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| TAB 1 | Cathode | Primary heat sink interface and voltage reference node; must be connected to low-impedance ground or thermal pad |
| Opposite Terminal | Anode | Current entry point during forward bias; used for polarity verification and functional testing |
Key Features
| Feature | Design Value |
|---|---|
| Integral heat sink locking tab | TAB 1 acts as both cathode and primary thermal conduction path, reducing junction temperature rise by up to 30°C vs. standard SOD-123 |
| Full metallic bottom | Eliminates solder flux entrapment during reflow, improving long-term reliability and void-free solder joints |
| Automated insertion compatibility | DO-216AA footprint and mechanical stability support high-speed pick-and-place at >25,000 UPH |
| Tight voltage tolerance option | ±2% (suffix C) and ±1% (suffix D) available - supports precision feedback loops in isolated DC/DC converters |
Applications
| Industrial Power Supply Regulation | Automotive Body Control Module (BCM) |
|---|---|
Use Scenario: Stabilizing feedback voltage in 24 V input DC/DC converters for PLC I/O modules. IC Role / Device Role / Timing Role: Zener reference in optocoupler-based isolated feedback network. Use Value: 36 V breakdown enables accurate sensing of overvoltage events above nominal rail while maintaining <1 µA leakage to preserve efficiency. | Use Scenario: Overvoltage clamp on LIN bus transceiver power rail in door module ECUs. IC Role / Device Role / Timing Role: Transient voltage suppressor protecting 5 V LDO input against load dump spikes. Use Value: 3.0 W rating and 30°C/W thermal resistance allow sustained clamping without thermal runaway during 100 ms pulses. |
| Medical Sensor Signal Conditioning | Telecom Line Card Protection |
Use Scenario: Reference voltage source for 16-bit ADC biasing in portable patient monitors. IC Role / Device Role / Timing Role: Precision voltage reference establishing ADC full-scale threshold. Use Value: ±5% tolerance and 38 Ω dynamic impedance ensure <0.1% full-scale error contribution under varying load conditions. | Use Scenario: Secondary overvoltage protection on -48 V telecom power distribution boards. IC Role / Device Role / Timing Role: Clamp diode limiting surge-induced voltage excursions on backplane rails. Use Value: >16 kV HBM ESD rating prevents field failure during handling and board integration in high-volume manufacturing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMCJ36A | TVS diode (unidirectional), 36 V standoff, 52.5 V clamping, 1500 W peak pulse power | Designed for transient suppression, not precision regulation; higher clamping voltage limits use in reference circuits | Choose for surge-heavy environments where fast response to EFT/burst events is critical, not for stable DC reference |
| BZX84-C36 | SOT-23 Zener, 36 V ±5%, 300 mW, 90 Ω dynamic impedance, no integrated heat sink | Limited power handling (0.3 W) and higher thermal resistance restrict use to signal-level biasing only | Choose for space-constrained low-power logic biasing where PCB thermal mass is insufficient for Powermite® mounting |
Compared with SMCJ36A and BZX84-C36, the 1PMT5938B uniquely combines 3.0 W continuous power, 30°C/W thermal resistance, and precision Zener regulation-making it the only option among the three suitable for thermally demanding, high-stability reference or clamping roles in industrial power systems.
Availability
1PMT5938B is available at Aetrix Electronics and suitable for industrial power supply regulation, automotive body control modules, medical sensor signal conditioning, and telecom line card protection requiring stable component supply and long-term lifecycle support.
Supply support for 1PMT5938B 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 manufacturer specializing in high-reliability analog, mixed-signal, and radiation-hardened components for aerospace, defense, and industrial markets.
The Powermite® Zener series was designed for high-power-density surface-mount voltage regulation and transient clamping in space-constrained, thermally aggressive environments such as motor drives and telecom infrastructure.
FAQ
What is the maximum continuous power dissipation for 1PMT5938B?
The 1PMT5938B is rated for 3.0 W DC power dissipation when TAB 1 is maintained at 60°C. This rating assumes direct thermal coupling to a sufficient PCB copper area. Derating is required above 60°C tab temperature per the 30°C/W junction-to-TAB thermal resistance specification.
How is the cathode identified on the 1PMT5938B package?
The cathode of the 1PMT5938B is designated by TAB 1-the large metallic tab on the package bottom. This tab serves as both the cathode terminal and the primary thermal conduction path. The opposite terminal is the anode.
Does 1PMT5938B meet industry-standard ESD requirements?
Yes, the 1PMT5938B has an ESD rating exceeding 16 kV per the Human Body Model (HBM), verified per ANSI/ESDA/JEDEC JS-001. This ensures robustness during automated handling, SMT placement, and board-level assembly without additional ESD protection circuitry.
Can 1PMT5938B be used as a voltage reference in precision analog circuits?
Yes, the 1PMT5938B supports precision reference use with its ±5% zener voltage tolerance, 38 Ω dynamic impedance at 10.4 mA, and low 1 µA reverse leakage at 27.4 V. For tighter accuracy, ±2% (1PMT5938C) and ±1% (1PMT5938D) variants are available.
What tape-and-reel packaging options are available for 1PMT5938B?
The 1PMT5938B is supplied in EIA-481-compliant tape-and-reel packaging: 3,000 units per 7-inch reel and 12,000 units per 13-inch reel. Reel dimensions, pocket depth, and cover tape specifications comply fully with automated SMT equipment feed requirements.
1PMT5938/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:
- ±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
1PMT5938/TR13 FAQ
1.How can I place an order for 1PMT5938/TR13 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1PMT5938/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 1PMT5938/TR13 reliable?
The price and inventory of 1PMT5938/TR13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1PMT5938/TR13 is usually 5 days.
3.What payment methods are accepted for 1PMT5938/TR13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1PMT5938/TR13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1PMT5938/TR13?
1PMT5938/TR13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1PMT5938/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 1PMT5938/TR13?
For technical support, including 1PMT5938/TR13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1PMT5938/TR13 requirements.
6.How does Aetrix verify that 1PMT5938/TR13 is sourced from the original manufacturer or authorized distributors?
All 1PMT5938/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 1PMT5938/TR13 meets industry standards.
7.What is the process for return or replacement of 1PMT5938/TR13?
All 1PMT5938/TR13 units undergo pre-shipment inspection (PSI). If there is an issue with 1PMT5938/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 1PMT5938/TR13 part is unused and in its original packaging.
Return procedure for 1PMT5938/TR13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1PMT5938/TR13 Tags
-
MMBZ5240B-7-F
Diodes Incorporated
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BZT52C5V6T-7
Diodes Incorporated
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MMSZ5231B-7-F
Diodes Incorporated
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BZT52C15-7-F
Diodes Incorporated
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BZX84C3V3LT1G
onsemi
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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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