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Microchip Technology MPLAD36KP22A
- Part No.:
- MPLAD36KP22A
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- Nonstandard SMD
- Datasheet:
-
MPLAD36KP22A.pdf
- Description:
- TVS DIODE 22VWM 36.4VC PLAD
- Quantity:
- Payment:
- Shipping:
Inventory:7,804
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Product details
Overview
MPLAD36KP22A from Microsemi is a unidirectional surface-mount transient voltage suppressor (TVS) designed for high-energy surge protection in aerospace, automotive, and industrial power systems. It delivers 36 kW peak pulse power at 10/1000 μs, features a 22 V reverse standoff voltage (VWM), clamps transients to ≤36.4 V at 990 A IPP, and meets RTCA DO-160 Section 22 multi-stroke lightning requirements.
For engineers reviewing the MPLAD36KP22A datasheet, MPLAD36KP22A pinout, MPLAD36KP22A application, or MPLAD36KP22A equivalent, key selection criteria include its 22 V VWM rating, 36.4 V max clamping voltage at 990 A, low thermal resistance (RθJC = 1.0 °C/W), RoHS-compliant e3 plating, and suitability for secondary lightning protection per IEC 61000-4-5 with 42 Ω source impedance.
Technical Context
The MPLAD36KP22A operates as a silicon avalanche diode-based TVS, optimized for fast response (<100 ps rise time) and high-energy absorption in unidirectional DC rail protection. Its metal-base cathode construction enables efficient heat transfer to PCB copper pads or heatsinks, supporting sustained surge handling under ≤0.05% duty cycle conditions.
It complies with AEC-Q101 stress testing and supports secondary lightning protection across IEC 61000-4-5 Classes 1–5 depending on source impedance (42 Ω, 12 Ω, or 2 Ω), and meets RTCA/DO-160F Waveform 4 Level 4 and Waveform 5A Level 4 requirements for pin injection immunity.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 22 V - Maximum continuous operating voltage before conduction begins; sets minimum system rail rating for safe integration. |
| V(BR) min/max | 24.4–26.9 V - Breakdown occurs within this range at 5 mA; ensures predictable turn-on margin above VWM. |
| VC @ IPP | ≤36.4 V at 990 A - Clamping voltage limits downstream component stress during worst-case 10/1000 μs surges. |
| PPP | 36,000 W - Peak pulse power capability defines maximum single-event energy absorption without failure. |
| RθJC | 1.0 °C/W - Low junction-to-case thermal resistance enables effective heat transfer to heatsink or copper pour. |
| ID @ VWM | ≤10 μA - Ultra-low leakage preserves system efficiency and battery life in always-on applications. |
| αV(BR) | 20 mV/°C - Temperature coefficient quantifies V(BR) drift over temperature; critical for thermal design margining. |
Pinout & Package
Package: PLAD (Plastic Leaded Anode Down) - void-free UL94V-0 epoxy body with metal base cathode; dimensions 12.32 × 10.54 × 5.08 mm (L × W × H); weight ~1.7–2.0 g; RoHS-compliant matte-tin plating (e3).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (top side) | Positive terminal for unidirectional operation | Connected to protected line; current flows anode-to-cathode during surge clamping. |
| Cathode (metal base) | Ground reference / heat sink interface | Must be soldered to large copper area or heatsink; serves dual role as electrical return and thermal path. |
Key Features
| Feature | Design Value |
|---|---|
| 36 kW peak pulse power | Enables robust protection against severe lightning-induced transients (e.g., DO-160 Section 22 multi-stroke events) without derating. |
| Low RθJC = 1.0 °C/W | Allows direct thermal coupling to PCB copper, reducing junction temperature rise by >50% vs. standard SMD packages under repeated surges. |
| AEC-Q101 qualified | Validates reliability for automotive powertrain and chassis applications where long-term surge immunity is mission-critical. |
| Moisture sensitivity Level 1 | Eliminates dry-pack requirement and floor-life constraints-supports standard SMT assembly without baking or special handling. |
| RTCA/DO-160F Waveform 4 Level 4 compliance | Guarantees survivability against 6.4/69 μs pin-injection transients up to 200 V, essential for avionics signal/power integrity. |
Applications
| Aerospace Power Distribution | Automotive Load Dump Protection |
|---|---|
Use Scenario: 28 V DC distribution bus in commercial aircraft avionics bays exposed to lightning-induced surges per DO-160 Section 22. IC Role / Device Role / Timing Role: Primary transient suppression device placed at bus entry point to clamp induced voltages below 40 V. Use Value: Prevents latch-up or destruction of downstream DC-DC converters and flight control electronics during multi-stroke lightning events. | Use Scenario: 12 V/24 V alternator output line in heavy-duty trucks experiencing ISO 7637-2 Load Dump pulses up to 120 V. IC Role / Device Role / Timing Role: Unidirectional TVS shunting surge energy directly to chassis ground before reaching ECU power inputs. Use Value: Limits clamped voltage to ≤36.4 V, protecting sensitive microcontrollers and CAN transceivers rated for 40 V absolute maximum. |
| Industrial Motor Drive DC Bus | Railway Signaling Power Supply |
Use Scenario: 400 V DC link in variable-frequency drives subjected to switching transients and inductive kickback. IC Role / Device Role / Timing Role: Secondary surge protector parallel to bulk capacitors, activated only during overvoltage excursions exceeding VWM. Use Value: Absorbs up to 36 kW for 1 ms without degradation, preserving capacitor lifetime and preventing IGBT gate driver damage. | Use Scenario: 72 V DC power input to trackside signaling controllers exposed to induced surges from nearby traction currents. IC Role / Device Role / Timing Role: Fast-response TVS on input filter stage meeting EN 50121-3-2 Class 3 immunity requirements. Use Value: Clamps 42 Ω source impedance IEC 61000-4-5 surges to <36.4 V, ensuring uninterrupted operation during electromagnetic interference events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ22A | Lower PPP (600 W), smaller SMB package, higher RθJA (50 °C/W), no AEC-Q101 or DO-160 qualification. | Suitable for consumer-grade 22 V rail protection; insufficient for aerospace lightning or automotive load dump. | Select SMBJ22A only for cost-sensitive, low-energy applications where 36 kW capability is unnecessary. |
| SMCJ22A | PPP = 1500 W, larger SMC package, RθJC ≈ 2.5 °C/W, AEC-Q101 qualified but not DO-160 tested. | Meets basic ISO 7637-2 load dump in non-safety-critical automotive modules; lacks multi-stroke lightning validation. | Choose SMCJ22A when DO-160 compliance is not required and board space allows larger footprint than PLAD. |
Compared with SMBJ22A and SMCJ22A, the MPLAD36KP22A provides 24× and 24× higher peak pulse power respectively, validated performance under RTCA/DO-160F Waveform 4/5A, and superior thermal management via metal-base mounting-making it the only option for certified aerospace and high-reliability automotive surge protection.
Availability
MPLAD36KP22A is available at Aetrix Electronics and suitable for aerospace power distribution, automotive load dump protection, and industrial motor drive DC bus applications requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for MPLAD36KP22A 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 Corporation (now part of Microchip Technology) designs high-reliability analog, mixed-signal, and power semiconductors for aerospace, defense, and industrial markets.
The MPLAD36KP22A belongs to the PLAD-series high-power TVS family, engineered specifically for certified lightning and load dump protection in safety-critical systems where multi-stroke surge resilience and thermal robustness are mandatory.
FAQ
What is the maximum clamping voltage of the MPLAD36KP22A at its rated peak pulse current?
The MPLAD36KP22A has a maximum clamping voltage (VC) of 36.4 V at its rated peak pulse current (IPP) of 990 A under 10/1000 μs waveform conditions. This value is measured per JEDEC standards and guarantees that downstream components see no more than 36.4 V during worst-case surge events, enabling reliable protection of 40 V-rated ICs and power stages in the MPLAD36KP22A's target applications.
Does the MPLAD36KP22A require special PCB layout considerations for thermal management?
Yes-the MPLAD36KP22A uses a metal-base cathode that must be soldered to a thermally robust PCB copper area or external heatsink. The datasheet specifies a recommended pad layout (0.470″ × 0.230″) with thermal vias to internal planes. Failure to implement adequate copper area results in junction temperature exceeding 150°C under repeated 36 kW surges, risking parametric shift or failure. The MPLAD36KP22A's RθJC of 1.0 °C/W assumes this mounting configuration.
Is the MPLAD36KP22A compliant with automotive qualification standards?
Yes-the MPLAD36KP22A is tested and qualified to AEC-Q101 for stress reliability, including HTGB, HTRB, and temperature cycling. It is not just automotive-grade but also validated for RTCA/DO-160F Section 22 multi-stroke lightning, making it suitable for both automotive powertrain modules and aerospace avionics where AEC-Q101 alone is insufficient. The MPLAD36KP22A's qualification evidence is documented in Microsemi's RF01216 Rev B specification.
Can the MPLAD36KP22A be used in bidirectional configurations?
No-the MPLAD36KP22A is a unidirectional TVS. Bidirectional variants use the "CA" suffix (e.g., MPLAD36KP22CA). Using the MPLAD36KP22A in AC or bipolar signal paths would result in forward conduction during negative half-cycles, causing failure. For bidirectional protection at 22 V standoff, the correct part is MPLAD36KP22CA, which has symmetric breakdown in both directions and distinct clamping behavior.
What is the moisture sensitivity level (MSL) of the MPLAD36KP22A and how does it affect manufacturing?
The MPLAD36KP22A is rated MSL Level 1 per IPC/JEDEC J-STD-020B, meaning it has unlimited floor life and requires no dry-packaging or baking prior to reflow soldering. This eliminates moisture-related popcorning risk and simplifies SMT line logistics. The MPLAD36KP22A's void-free epoxy body and e3 RoHS plating contribute to this robust MSL rating, supporting standard 260°C peak reflow profiles without preconditioning.
MPLAD36KP22A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Package/Case:
- Nonstandard SMD
- Series:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 22V
- Voltage - Breakdown (Min):
- 24.4V
- Voltage - Clamping (Max) @ Ipp:
- 36.4V
- Current - Peak Pulse (10/1000µs):
- 990A
- Power - Peak Pulse:
- 36000W (36kW)
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Military
- Qualification:
- MIL-PRF-19500
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- PLAD
MPLAD36KP22A FAQ
1.How can I place an order for MPLAD36KP22A through Aetrix?
Please submit a Request for Quotation (RFQ) for MPLAD36KP22A 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 MPLAD36KP22A reliable?
The price and inventory of MPLAD36KP22A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MPLAD36KP22A is usually 5 days.
3.What payment methods are accepted for MPLAD36KP22A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPLAD36KP22A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MPLAD36KP22A?
MPLAD36KP22A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MPLAD36KP22A 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 MPLAD36KP22A?
For technical support, including MPLAD36KP22A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPLAD36KP22A requirements.
6.How does Aetrix verify that MPLAD36KP22A is sourced from the original manufacturer or authorized distributors?
All MPLAD36KP22A 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 MPLAD36KP22A meets industry standards.
7.What is the process for return or replacement of MPLAD36KP22A?
All MPLAD36KP22A units undergo pre-shipment inspection (PSI). If there is an issue with MPLAD36KP22A, 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 MPLAD36KP22A part is unused and in its original packaging.
Return procedure for MPLAD36KP22A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MPLAD36KP22A Tags
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