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Microchip Technology 1PMT5949B/TR13
- Part No.:
- 1PMT5949B/TR13
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-216AA
- Datasheet:
-
1PMT5949B/TR13.pdf
- Description:
- DIODE ZENER 100V 3W DO216AA
- Quantity:
- Payment:
- Shipping:
Inventory:7,100
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Product details
Overview
1PMT5949B/TR13 from Microsemi is a 100 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 250 Ω dynamic impedance at 3.7 mA test current and 3100 µA max reverse leakage at 1 V. It serves as a precision voltage reference or overvoltage clamp in DC power rails and regulator feedback networks.
For engineers reviewing the 1PMT5949B/TR13 datasheet, 1PMT5949B/TR13 pinout, 1PMT5949B/TR13 application, or 1PMT5949B/TR13 equivalent, key selection criteria include its 100 V nominal Zener voltage, 3.0 W thermal capability with metallic-tab heat sinking, low 250 Ω Zener impedance, ESD rating >16 kV HBM, and DO-216 mechanical outline compatibility with automated SMT assembly.
Technical Context
This device operates as a two-terminal voltage-regulating diode, conducting in reverse bias above its specified Zener breakdown voltage (100 V). Its junction-to-tab thermal resistance of 30°C/W enables effective heat transfer to the PCB via TAB 1, supporting stable regulation under sustained 3.0 W dissipation when mounted on adequate copper area.
The Powermite® package integrates a full metallic bottom and locking tab-mechanically anchoring the device during reflow and eliminating solder flux entrapment. Cathode polarity is unambiguously designated by TAB 1, and the molded DO-216 outline ensures compatibility with EIA-481 tape-and-reel handling (13-inch reel: 12,000 pcs).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 100 V ±5% at IZT = 3.7 mA; defines precise clamping threshold for overvoltage protection or reference stability |
| Power Dissipation | 3.0 W at TAB 1 = 60°C; enables robust operation in compact power supply designs without forced cooling |
| Dynamic Impedance (ZZT) | 250 Ω at IZT = 3.7 mA; indicates moderate regulation stiffness-suitable for non-critical references but not ultra-low-noise LDO feedback |
| Reverse Leakage (IR) | ≤3100 µA at VR = 1 V; confirms low off-state current for standby power integrity |
| Thermal Resistance (RθJ-TAB) | 30°C/W junction-to-TAB 1; allows direct thermal path to PCB copper, critical for sustained 3 W operation |
| ESD Rating | >16 kV per Human Body Model; provides inherent system-level ESD robustness without external protection |
| Package Outline | DO-216 (Powermite®); surface-mount footprint with integral heat-sink tab and flux-free metallic bottom |
Pinout & Package
Package: Powermite® (DO-216), molded surface-mount housing with full metallic bottom and integral heat-sink locking tab. 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 ground or low-impedance return for thermal and electrical stability |
| Opposite Terminal | Anode | Input/positive rail connection point; reverse-biased configuration establishes Zener conduction path |
Key Features
| Feature | Design Value |
|---|---|
| Full metallic bottom | Eliminates solder flux entrapment during reflow, ensuring reliable solder joint formation and long-term interconnect integrity |
| Integral heat-sink locking tab | Provides mechanical anchoring during automated insertion and enhances thermal conduction from junction to PCB copper |
| DO-216 mechanical outline | Standardized footprint compatible with EIA-481 tape-and-reel (13″ reel: 12,000 pcs) and high-speed pick-and-place equipment |
| 100 V Zener voltage with ±5% tolerance | Enables accurate voltage clamping in 90–110 V DC bus monitoring or telecom power supervision circuits |
| Operating temperature range | –55°C to +150°C junction/storage; supports deployment in industrial and automotive under-hood environments |
Applications
| DC Power Rail Clamping | Feedback Reference for Switching Regulators |
|---|---|
Use Scenario: Protects downstream 100 V-rated capacitors and ICs from transient overvoltage on telecom DC distribution lines. IC Role / Device Role / Timing Role: Two-terminal shunt regulator acting as crowbar element during line surges exceeding 100 V. Use Value: Limits peak voltage to ≤105 V (100 V + 5%) with 3.0 W surge-handling capacity, preventing catastrophic failure without active control circuitry. | Use Scenario: Sets output voltage in isolated flyback converter feedback loop using optocoupler-coupled error amplifier. IC Role / Device Role / Timing Role: Precision Zener reference providing stable 100 V threshold to bias optocoupler LED current. Use Value: Maintains ±5% output regulation across load and line variations due to tight VZ tolerance and low 250 Ω ZZT. |
| Industrial Sensor Excitation Supply | Overvoltage Protection in Battery Management |
Use Scenario: Supplies regulated excitation voltage to high-voltage piezoresistive pressure sensors operating near 100 V full-scale. IC Role / Device Role / Timing Role: Passive voltage reference source delivering stable bias independent of supply fluctuations. Use Value: Ensures sensor output linearity and repeatability by holding excitation within ±5% despite input ripple up to 120 V. | Use Scenario: Guards BMS front-end analog inputs against cell-string overvoltage during charging faults in 96-cell Li-ion stacks (~360 V total). IC Role / Device Role / Timing Role: Clamp diode placed across input divider network to limit sensed voltage to safe 100 V level. Use Value: Prevents ADC saturation and protects op-amp input stages with <3100 µA leakage at 1 V, minimizing measurement offset error. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMCJ100A | TVS diode (unidirectional), 100 V standoff, 1500 W peak pulse power, higher capacitance (~100 pF) | Designed for transient suppression (IEC 61000-4-2/4-5), not precision DC regulation | Select only for surge-only protection; unsuitable for steady-state reference use due to wide VBR tolerance and no ZZT spec |
| BZX84-C100 | SOT-23 Zener, 100 V ±5%, 300 mW PD, 500 Ω ZZT, no metallic heat sink | Limited to low-power signal-level referencing; cannot sustain 3.0 W continuous dissipation | Use where board space is constrained and power <100 mW; avoid in power rail clamping requiring thermal robustness |
Compared with SMCJ100A and BZX84-C100, the 1PMT5949B/TR13 uniquely combines 100 V precision regulation, 3.0 W continuous power handling, and DO-216 thermal packaging-making it the only option among the three suitable for high-reliability, steady-state DC voltage clamping in industrial power systems.
Availability
1PMT5949B/TR13 is available at Aetrix Electronics and suitable for DC power rail clamping, switching regulator feedback referencing, industrial sensor excitation, and battery management overvoltage protection requiring stable component supply and traceable sourcing.
Supply support for 1PMT5949B/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 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 1PMT5949B/TR13-was engineered to deliver high-power surface-mount voltage regulation in space-constrained applications where thermal performance and assembly reliability are critical.
FAQ
What is the Zener voltage tolerance for 1PMT5949B/TR13?
The 1PMT5949B/TR13 has a standard Zener voltage tolerance of ±5% at 100 V nominal, measured at 3.7 mA test current with TAB 1 held at 30°C. Tighter tolerances (±2% and ±1%) are available with suffixes C and D respectively, but the TR13 variant uses the standard ±5% grade.
How is thermal management handled in the 1PMT5949B/TR13 package?
The 1PMT5949B/TR13 uses the Powermite® package with a full metallic bottom and integral locking tab (TAB 1) that serves as both mechanical anchor and primary thermal path. Its junction-to-TAB thermal resistance is 30°C/W, enabling 3.0 W continuous dissipation when TAB 1 is thermally connected to sufficient PCB copper area.
Can 1PMT5949B/TR13 be used in place of through-hole Zener diodes like 1N4764A?
Yes-the 1PMT5949B/TR13 is the surface-mount equivalent of the 1N4764A (100 V, 3 W), sharing identical electrical specifications including Zener voltage, power rating, and dynamic impedance. Its DO-216 outline replaces the DO-41 axial leaded package, enabling automated SMT assembly without sacrificing performance.
What does the "TR13" suffix indicate in 1PMT5949B/TR13?
The "TR13" suffix denotes tape-and-reel packaging on a 13-inch reel containing 12,000 units, compliant with EIA-481 standards. This format supports high-volume automated placement and ensures consistent orientation (cathode marked by TAB 1) during pick-and-place operations.
Is the 1PMT5949B/TR13 suitable for automotive under-hood applications?
Yes-the 1PMT5949B/TR13 is rated for junction temperatures from –55°C to +150°C and features >16 kV HBM ESD robustness. When mounted with adequate thermal copper on the TAB 1 pad, it meets thermal and reliability requirements for engine-control module power supervision and battery disconnect monitoring in automotive environments.
1PMT5949B/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):
- 100 V
- Tolerance:
- ±5%
- Power - Max:
- 3 W
- Impedance (Max) (Zzt):
- 250 Ohms
- Current - Reverse Leakage @ Vr:
- 1 µA @ 76 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
1PMT5949B/TR13 FAQ
1.How can I place an order for 1PMT5949B/TR13 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1PMT5949B/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 1PMT5949B/TR13 reliable?
The price and inventory of 1PMT5949B/TR13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1PMT5949B/TR13 is usually 5 days.
3.What payment methods are accepted for 1PMT5949B/TR13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1PMT5949B/TR13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1PMT5949B/TR13?
1PMT5949B/TR13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1PMT5949B/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 1PMT5949B/TR13?
For technical support, including 1PMT5949B/TR13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1PMT5949B/TR13 requirements.
6.How does Aetrix verify that 1PMT5949B/TR13 is sourced from the original manufacturer or authorized distributors?
All 1PMT5949B/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 1PMT5949B/TR13 meets industry standards.
7.What is the process for return or replacement of 1PMT5949B/TR13?
All 1PMT5949B/TR13 units undergo pre-shipment inspection (PSI). If there is an issue with 1PMT5949B/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 1PMT5949B/TR13 part is unused and in its original packaging.
Return procedure for 1PMT5949B/TR13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1PMT5949B/TR13 Tags
-
MMBZ5240B-7-F
Diodes Incorporated
-
BZT52C5V6T-7
Diodes Incorporated
-
MMSZ5231B-7-F
Diodes Incorporated
-
BZT52C15-7-F
Diodes Incorporated
-
BZX84C3V3LT1G
onsemi
-
MMSZ5245BS-7-F
Diodes Incorporated
-
MMSZ4682T1G
onsemi
-
BZT52C15S-7-F
Diodes Incorporated
-
MM5Z5V1ST1G
onsemi
-
SMAJ4744A-TP
Micro Commercial Co
-
BZT52C3V6LP-7
Diodes Incorporated
-
SMAZ12-13-F
Diodes Incorporated
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