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Microchip Technology 1PMT5953C/TR7
- Part No.:
- 1PMT5953C/TR7
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-216AA
- Datasheet:
-
1PMT5953C/TR7.pdf
- Description:
- DIODE ZENER 150V 3W DO216AA
- Quantity:
- Payment:
- Shipping:
Inventory:4,281
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Product details
Overview
1PMT5953C/TR7 from Microsemi is a 150 V, ±1% tolerance Zener diode in the Powermite® surface-mount package, rated for 3.0 W DC power dissipation at TAB 1 = 60°C, with 600 Ω dynamic impedance at 2.5 mA test current and thermal resistance of 30°C/W junction-to-TAB1. It serves as a precision voltage reference or overvoltage clamp in high-reliability power supply rails.
For engineers reviewing the 1PMT5953C/TR7 datasheet, 1PMT5953C/TR7 pinout, 1PMT5953C/TR7 application, or 1PMT5953C/TR7 equivalent, key selection criteria include its tight 1% voltage tolerance, ESD rating >16 kV HBM, full metallic bottom eliminating flux entrapment, and compatibility with automated insertion equipment.
Technical Context
This Zener diode operates in reverse breakdown mode with a nominal zener voltage of 150 V at 2.5 mA (IZT), exhibiting 600 Ω dynamic impedance (ZZT) and 1 μA maximum reverse leakage (IR) at 121.6 V (VR). Its knee current (IZK) is 0.25 mA with 8000 Ω knee impedance (ZZK), confirming stable regulation onset.
The device uses a DO-216 molded surface-mount package with cathode designated by TAB 1, full metallic bottom for thermal and assembly reliability, and integral locking tabs acting as heat sinks. Junction temperature range is –55°C to +150°C, supporting industrial and automotive under-hood environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 150 V ±1% at IZT = 2.5 mA - enables precise 150 V reference or clamping with minimal drift |
| Power Dissipation | 3.0 W at TAB 1 = 60°C - supports sustained operation in compact power rails without forced cooling |
| Dynamic Impedance | 600 Ω at IZT - ensures low AC voltage variation under load transients |
| Thermal Resistance | 30°C/W junction-to-TAB1 - allows direct thermal path to PCB copper for effective heat spreading |
| ESD Rating | >16 kV per HBM - provides robust handling and system-level ESD immunity without external protection |
| Reverse Leakage | ≤1 μA at VR = 121.6 V - guarantees low standby current in high-impedance bias networks |
| Knee Current | 0.25 mA - defines minimum current for stable regulation onset, critical for low-power sensing circuits |
Pinout & Package
DO-216 surface-mount package with molded body, full metallic bottom, and cathode identified by TAB 1. Mounting orientation is unrestricted; weight ≈ 0.016 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| TAB 1 | Cathode | Primary heat-sinking terminal and voltage reference node; must be connected to ground or low-impedance return path |
| Lead 2 | Anode | Input node for reverse-bias connection; routed to positive rail or transient source in clamp configuration |
Key Features
| Feature | Design Value |
|---|---|
| Surface-mount Powermite® package | Enables automated placement and reflow while delivering 3 W power handling in footprint smaller than DO-41 |
| Integral heat sink locking tabs | Provides mechanical anchoring during reflow and enhances thermal conduction from junction to PCB |
| Full metallic bottom | Eliminates solder flux entrapment risk and improves thermal transfer versus plastic-bottom SMD packages |
| 1% voltage tolerance (suffix C) | Reduces calibration overhead in precision reference designs versus standard ±5% variants |
| –55°C to +150°C operating range | Supports deployment in extended-temperature industrial controls and automotive engine compartments |
Applications
| Industrial Power Supply Monitoring | Automotive Engine Control Unit (ECU) Clamp |
|---|---|
Use Scenario: Monitoring 12 V–24 V battery-fed systems where transient spikes exceed 100 V during load dump. IC Role / Device Role / Timing Role: Overvoltage clamp protecting downstream LDOs and microcontrollers. Use Value: 150 V standoff with 1% tolerance ensures reliable clamping before damage threshold of 130 V-rated ICs. | Use Scenario: Protecting sensor signal conditioning circuitry in diesel ECU modules exposed to ISO 7637-2 pulse 5a. IC Role / Device Role / Timing Role: Primary transient voltage suppressor on 5 V analog sensor rails. Use Value: >16 kV HBM ESD rating and 30°C/W thermal resistance enable survival of repeated 100 V/50 ms pulses without derating. |
| Medical Imaging Power Rail Reference | Telecom DC-DC Converter Feedback |
Use Scenario: Providing stable 150 V reference for X-ray generator HV bias control loops requiring <0.5% long-term drift. IC Role / Device Role / Timing Role: Precision shunt reference in closed-loop feedback network. Use Value: 1% initial tolerance and 600 Ω ZZT minimize output voltage error contribution across 1–10 mA operating range. | Use Scenario: Setting output voltage of isolated 48 V → 12 V flyback converter in telecom base station power modules. IC Role / Device Role / Timing Role: Secondary-side voltage sense reference for optocoupler feedback path. Use Value: Full metallic bottom ensures consistent thermal performance across 0–70°C ambient, reducing reference drift vs. epoxy-bottom Zeners. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMF150A (ON Semiconductor) | 150 V, 1 W, SOD-123 package, 1000 Ω ZZT, no metallic bottom | Limited to lower-power clamping; lacks thermal mass and flux-free assembly advantage | Select when board space is constrained but 3 W dissipation is unnecessary |
| BZX84-C150 (Diodes Inc.) | 150 V, 300 mW, SOT-23, ±5% tolerance, 1500 Ω ZZT | Suitable only for signal-level references; cannot sustain continuous 3 W loads | Choose for cost-sensitive, low-current bias networks where precision is secondary |
Compared with SMF150A and BZX84-C150, the 1PMT5953C/TR7 delivers triple the power rating, half the dynamic impedance, and superior thermal management via its metallic bottom-making it the only option qualified for sustained 150 V, 20 mA clamp operation in thermally demanding environments.
Availability
1PMT5953C/TR7 is available at Aetrix Electronics and suitable for industrial power supplies, automotive ECU protection, medical imaging HV references, and telecom DC-DC converters requiring stable component supply and long-lifecycle support.
Supply support for 1PMT5953C/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 1PMT5953C/TR7-is designed for high-power-density voltage regulation and transient suppression in space-constrained, thermally aggressive applications where traditional through-hole Zeners fail.
FAQ
What is the zener voltage tolerance of the 1PMT5953C/TR7?
The 1PMT5953C/TR7 has a zener voltage tolerance of ±1%, indicated by the "C" suffix in the part number. This is tighter than the standard ±5% tolerance of the "B"-suffixed variants like 1PMT5953B. The 150 V nominal voltage is guaranteed between 148.5 V and 151.5 V when measured at IZT = 2.5 mA and TAB 1 temperature = 30°C, per MSC0995 Rev F specifications.
How is thermal management handled in the 1PMT5953C/TR7 package?
The 1PMT5953C/TR7 uses a Powermite® package with a full metallic bottom and integral locking tabs that act as an efficient heat sink. Its junction-to-TAB1 thermal resistance is 30°C/W, enabling direct conduction of heat into the PCB copper. This design eliminates solder flux entrapment and supports 3.0 W power dissipation at TAB 1 = 60°C-critical for sustained operation in compact power stages.
Can the 1PMT5953C/TR7 be used in automotive applications?
Yes, the 1PMT5953C/TR7 is qualified for automotive use with a junction temperature range of –55°C to +150°C and >16 kV HBM ESD rating. Its robust DO-216 package, metallic thermal path, and stable 150 V regulation make it suitable for load-dump protection and sensor rail clamping in engine control units and ADAS power domains, provided layout follows Microsemi's thermal pad guidelines.
What does the "TR7" suffix indicate in 1PMT5953C/TR7?
The "TR7" suffix denotes tape-and-reel packaging per EIA Standard 481, with 7-inch reels containing 3,000 units. This format is optimized for high-speed SMT placement equipment and ensures consistent orientation (cathode marked by TAB 1) and moisture-sensitive level (MSL) compliance per J-STD-020, supporting automated manufacturing without manual handling.
Is the 1PMT5953C/TR7 compatible with lead-free reflow profiles?
Yes, the 1PMT5953C/TR7 is compatible with standard lead-free reflow profiles, including peak temperatures up to 260°C for ≤60 seconds. Its molded DO-216 package and metallic bottom are rated for JEDEC J-STD-020 MSL 1 conditions. No pre-baking is required, and the full metallic bottom prevents delamination or voiding during thermal cycling.
1PMT5953C/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):
- 150 V
- Tolerance:
- ±2%
- Power - Max:
- 3 W
- Impedance (Max) (Zzt):
- 600 Ohms
- Current - Reverse Leakage @ Vr:
- 1 µA @ 114 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
1PMT5953C/TR7 FAQ
1.How can I place an order for 1PMT5953C/TR7 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1PMT5953C/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 1PMT5953C/TR7 reliable?
The price and inventory of 1PMT5953C/TR7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1PMT5953C/TR7 is usually 5 days.
3.What payment methods are accepted for 1PMT5953C/TR7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1PMT5953C/TR7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1PMT5953C/TR7?
1PMT5953C/TR7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1PMT5953C/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 1PMT5953C/TR7?
For technical support, including 1PMT5953C/TR7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1PMT5953C/TR7 requirements.
6.How does Aetrix verify that 1PMT5953C/TR7 is sourced from the original manufacturer or authorized distributors?
All 1PMT5953C/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 1PMT5953C/TR7 meets industry standards.
7.What is the process for return or replacement of 1PMT5953C/TR7?
All 1PMT5953C/TR7 units undergo pre-shipment inspection (PSI). If there is an issue with 1PMT5953C/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 1PMT5953C/TR7 part is unused and in its original packaging.
Return procedure for 1PMT5953C/TR7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1PMT5953C/TR7 Tags
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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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