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Microchip Technology MX15KP48A/TR
- Part No.:
- MX15KP48A/TR
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- DO-204AR, Axial
- Datasheet:
-
MX15KP48A/TR.pdf
- Description:
- TVS 48V 5% 15000W UNI
- Quantity:
- Payment:
- Shipping:
Inventory:3,064
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Product details
Overview
MX15KP48A/TR from Microchip Technology is a unidirectional axial-lead transient voltage suppressor (TVS) diode designed for high-energy surge protection in power and signal lines. It features a 48 V working standoff voltage (VWM), 77.7 V maximum clamping voltage (VC) at 193 A peak pulse current, and 15,000 W peak pulse power rating at 10/1000 µs waveform - enabling robust secondary lightning and EFT/ESD protection per IEC61000-4-5, -4-4, and -4-2 in industrial power supplies and telecom interfaces.
For engineers reviewing the MX15KP48A/TR datasheet, MX15KP48A/TR pinout, MX15KP48A/TR application, or MX15KP48A/TR equivalent, this device is selected for high-reliability through-hole TVS protection where precise VWM matching, sub-100 ps response time, and MIL-PRF-19500 upscreening options are required in harsh electromagnetic environments.
Technical Context
This unidirectional TVS diode operates as a voltage-clamped crowbar during transients, leveraging avalanche breakdown to divert surge energy away from downstream circuitry. Its DO-204AR axial package supports 20 °C/W junction-to-lead thermal resistance and delivers <5 ns response time from 0 V to V(BR) min, ensuring protection against fast-rising ESD and switching-induced spikes.
The device is characterized at 25 °C with 53.3 V minimum breakdown voltage (V(BR)) at 5 mA test current, 10 µA maximum standby current (ID) at VWM, and a +56 mV/°C temperature coefficient of V(BR), supporting stable clamping performance across –65 °C to +150 °C operating junction temperature range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 48 V DC - maximum continuous reverse standoff voltage before conduction begins; matches nominal 48 V DC power rails. |
| V(BR) min | 53.3 V at 5 mA - guaranteed avalanche initiation threshold; ensures reliable turn-on above system operating voltage. |
| VC @ IPP | 77.7 V at 193 A (10/1000 µs) - clamping voltage under worst-case surge; limits downstream voltage stress to safe levels. |
| PPP | 15,000 W - peak pulse power handling capacity; sustains single high-energy surges per IEC61000-4-5 Class 4. |
| ID @ VWM | ≤10 µA - ultra-low leakage at rated standoff; prevents unnecessary power loss or false triggering in standby. |
| Response time | <5 ns - time from 0 V to V(BR) min; enables effective suppression of ESD (IEC61000-4-2) and EFT (IEC61000-4-4). |
| TJ range | –65 °C to +150 °C - full operational junction temperature span; supports deployment in extended-temperature industrial enclosures. |
Pinout & Package
MX15KP48A/TR uses the DO-204AR axial-lead package: void-free UL94V-0 epoxy body, tin-lead or RoHS-compliant matte-tin plating, cathode indicated by band, weight ≈1.4 g, and mechanical dimensions per Figure 5-1 (LL: 27.95–38.1 mm, BD: 6.1–6.35 mm).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference terminal | Connected to ground or low-voltage return path; completes clamping loop during transient events. |
| Cathode | High-side surge input terminal | Connected to protected line (e.g., 48 V rail); carries full surge current into anode during avalanche conduction. |
Key Features
| Feature | Design Value |
|---|---|
| Unidirectional configuration | Enables polarity-specific protection on DC power lines without reverse-bias leakage concerns. |
| 100% surge tested | Each unit validated for 15,000 W pulse capability - eliminates batch-level reliability uncertainty in field deployments. |
| MIL-PRF-19500 upscreening option | Available for enhanced lot traceability, wafer/assembly control, and 3σ ID screening - meets aerospace-grade quality requirements. |
| Moisture sensitivity level 1 | No dry pack or bake-out required prior to soldering - simplifies manufacturing and reduces assembly cost. |
| RoHS compliant version | Meets EU Directive 2011/65/EU with lead-free terminations - supports environmentally regulated product certifications. |
Applications
| Industrial Power Supply Protection | Telecom Line Interface |
|---|---|
Use Scenario: 48 V DC input stage of programmable logic controller (PLC) power module exposed to load dump and lightning-induced surges. IC Role / Device Role / Timing Role: Primary overvoltage clamp protecting upstream rectifier, bulk capacitor, and PWM controller ICs. Use Value: Limits transient voltage to ≤77.7 V during 193 A surges, preventing gate oxide rupture in MOSFETs and latch-up in supervisory ICs. |
Use Scenario: T1/E1 data line interface card in central office equipment subjected to induced RFI and secondary lightning per IEC61000-4-5 (42 Ω source). IC Role / Device Role / Timing Role: Front-end surge shunt on transformer-coupled receive path, placed before line driver/receiver ICs. Use Value: Sub-5 ns response clamps induced transients before they propagate into sensitive analog front-end amplifiers and clock recovery circuits. |
| Renewable Energy Inverter DC Link | Railway Signaling Power Input |
Use Scenario: DC link between solar array and MPPT converter in outdoor photovoltaic inverters, subject to long-line lightning coupling. IC Role / Device Role / Timing Role: High-energy transient limiter on 48–60 V intermediate bus, coordinated with MOV and fuse. Use Value: 15,000 W peak power rating handles multi-kA surges without thermal runaway, maintaining system uptime in remote installations. |
Use Scenario: 48 V auxiliary power input of trackside signaling relay module operating in high-EMI railway corridors. IC Role / Device Role / Timing Role: Axial-leaded TVS mounted directly at chassis entry point to suppress conducted transients from traction motor switching. Use Value: Axial DO-204AR form factor enables secure mechanical mounting and high-current PCB trace routing, reducing inductance in surge path. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Littelfuse SMAJ48A | Same VWM (48 V) and VC (77.0 V), but lower PPP (400 W) and smaller SMA package; no MIL-PRF-19500 screening option. | Suitable for consumer-grade PCBs with space constraints; not rated for Class 4 lightning per IEC61000-4-5. | Select when cost and footprint are prioritized over 15 kW surge handling and military-grade reliability. |
| ON Semiconductor 1.5KE48A | Same VWM (48 V) and DO-204AR package, but lower PPP (1500 W), higher VC (78.0 V), and no upscreening or RoHS-e3 variants. | Valid for basic industrial ESD protection; lacks IEC61000-4-5 Class 4 compliance documentation and traceability. | Select only for legacy designs requiring direct drop-in replacement where 15 kW rating is not required. |
Compared with SMAJ48A and 1.5KE48A, MX15KP48A/TR delivers 37.5× and 10× higher peak pulse power respectively, maintains tighter V(BR) tolerance and lower temperature coefficient, and supports traceable high-reliability screening - making it the sole choice for mission-critical 48 V surge protection demanding IEC61000-4-5 Class 4 compliance.
Availability
MX15KP48A/TR is available at Aetrix Electronics and suitable for industrial power supply protection, telecom line interface hardening, renewable energy inverter DC links, and railway signaling power inputs requiring stable component supply across extended lifecycle programs.
Supply support for MX15KP48A/TR 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
Microchip Technology Inc. is a U.S.-based semiconductor company specializing in microcontrollers, analog devices, and high-reliability protection components with global design and manufacturing infrastructure.
The MX15KP series belongs to Microchip's high-power axial TVS portfolio, engineered specifically for secondary lightning and high-energy transient suppression in industrial, telecom, and transportation infrastructure systems.
FAQ
What is the clamping voltage of MX15KP48A/TR under a 10/1000 µs surge?
The MX15KP48A/TR has a maximum clamping voltage (VC) of 77.7 V when subjected to its rated peak pulse current of 193 A at the 10/1000 µs waveform. This value is measured per standard test conditions in Table 3-1 of the DS00005222B datasheet and defines the upper voltage limit imposed on protected circuitry during surge events.
Is MX15KP48A/TR unidirectional or bidirectional?
MX15KP48A/TR is a unidirectional transient voltage suppressor, as confirmed by its part number suffix "A" (per Microchip's nomenclature in Section 2.1) and cathode-band marking requirement. It conducts only during reverse-biased overvoltage events and must be oriented with cathode toward the protected line.
Does MX15KP48A/TR meet IEC61000-4-5 Class 4 lightning protection requirements?
Yes - MX15KP48A/TR is explicitly listed in the datasheet (page 1) for secondary lightning protection per IEC61000-4-5 with 42 Ω source impedance across Class 1–4, including Class 4. Its 15,000 W peak pulse power and 193 A IPP rating satisfy the 4 kV/2 kA test profile for this classification.
What packaging option does the "TR" suffix indicate for MX15KP48A/TR?
The "TR" suffix in MX15KP48A/TR denotes tape-and-reel packaging per EIA-296 standard, intended for automated SMT placement. Although the device is axial-lead and typically used in through-hole assembly, this variant supports reel-fed insertion equipment and is documented in Section 1.1 of the datasheet.
Can MX15KP48A/TR be used in RoHS-compliant designs?
Yes - MX15KP48A/TR is available in RoHS-compliant versions with annealed matte-tin plating, as stated in the Product Overview and Features sections of the datasheet. The "e3" designation in the series name confirms compliance with EU Directive 2011/65/EU.
MX15KP48A/TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Package/Case:
- DO-204AR, Axial
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 48V
- Voltage - Breakdown (Min):
- 53.3V
- Voltage - Clamping (Max) @ Ipp:
- 77.7V
- Current - Peak Pulse (10/1000µs):
- 193A
- Power - Peak Pulse:
- 15000W (15kW)
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Military
- Qualification:
- MIL-PRF-19500
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AR
MX15KP48A/TR FAQ
1.How can I place an order for MX15KP48A/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for MX15KP48A/TR 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 MX15KP48A/TR reliable?
The price and inventory of MX15KP48A/TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MX15KP48A/TR is usually 5 days.
3.What payment methods are accepted for MX15KP48A/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MX15KP48A/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MX15KP48A/TR?
MX15KP48A/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MX15KP48A/TR 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 MX15KP48A/TR?
For technical support, including MX15KP48A/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MX15KP48A/TR requirements.
6.How does Aetrix verify that MX15KP48A/TR is sourced from the original manufacturer or authorized distributors?
All MX15KP48A/TR 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 MX15KP48A/TR meets industry standards.
7.What is the process for return or replacement of MX15KP48A/TR?
All MX15KP48A/TR units undergo pre-shipment inspection (PSI). If there is an issue with MX15KP48A/TR, 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 MX15KP48A/TR part is unused and in its original packaging.
Return procedure for MX15KP48A/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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