My Inquiry
My Account
Microchip Technology MAPLAD18KP60AE3
- Part No.:
- MAPLAD18KP60AE3
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- Nonstandard SMD
- Datasheet:
-
MAPLAD18KP60AE3.pdf
- Description:
- TVS DIODE 60VWM 96.8VC PLAD
- Quantity:
- Payment:
- Shipping:
Inventory:9,300
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAPLAD18KP60AE3 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 18,000 W peak pulse power at 10/1000 μs, features a 60 V reverse standoff voltage (VWM), clamps to ≤96.8 V at 186 A peak impulse current (IPP), and exhibits 0.7 °C/W junction-to-case thermal resistance for efficient heat dissipation in lightning and load-dump protection circuits.
For engineers reviewing the MAPLAD18KP60AE3 datasheet, MAPLAD18KP60AE3 pinout, MAPLAD18KP60AE3 application, or MAPLAD18KP60AE3 equivalent, key selection criteria include its DO-160F Waveform 4 Level 4 compliance, IEC 61000-4-5 Class 1–5 secondary lightning capability with 42 Ω source impedance, RoHS-compliant e3 plating, and validated 150 °C maximum junction temperature operation under pulsed conditions.
Technical Context
This TVS diode operates as a clamping-type overvoltage protector, leveraging avalanche breakdown to divert transients away from sensitive downstream circuitry. Its unidirectional polarity places the cathode on the metal base (package bottom), enabling low-inductance mounting directly to heatsinks or ground planes.
The device meets AEC-Q101 stress testing requirements and supports multi-stroke lightning immunity per RTCA DO-160 Section 22. Thermal performance is optimized via void-free UL94V-0 epoxy packaging and direct metal-base thermal path, achieving RθJC = 0.7 °C/W - critical for sustained surge handling in avionics and engine control units.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power (PPP) | 18,000 W @ 10/1000 μs - enables single-device protection against severe lightning-induced surges without cascaded stages |
| Reverse Standoff Voltage (VWM) | 60 V - matches nominal 48 V DC bus systems while allowing margin above peak operating voltage |
| Clamping Voltage (VC) | ≤96.8 V @ IPP = 186 A - ensures protected ICs see <100 V during worst-case surge, preserving 100 V-rated components |
| Junction-to-Case Thermal Resistance | 0.7 °C/W - allows direct thermal coupling to heatsink for >1 kW steady-state dissipation when derated |
| Breakdown Voltage (V(BR)) | 66.7–73.7 V @ I(BR) - guarantees reliable turn-on before VC exceeds safe system thresholds |
| Standby Current (ID) | ≤10 μA @ VWM - negligible leakage in always-on 48 V monitoring or sensor circuits |
| Temperature Range | −55 °C to +150 °C - qualified for under-hood automotive and flight-critical avionics environments |
Pinout & Package
MAPLAD18KP60AE3 uses a surface-mount, metal-base package with two terminals: anode and cathode. The cathode is electrically connected to the exposed metal base (bottom side), enabling low-inductance, thermally efficient mounting to PCB copper pours or external heatsinks. Package dimensions are 12.32 × 10.54 × 5.08 mm (L × W × H), with recommended pad layout per RF01215 Rev B.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (top-side marked terminal) | Transient current entry point | Connected to protected line (e.g., 48 V supply rail); current flows into device during positive surge |
| Cathode (metal base / bottom) | Current return path & thermal interface | Must be soldered to large copper area or heatsink; serves dual role of electrical return and primary heat conduction path |
Key Features
| Feature | Design Value |
|---|---|
| DO-160F Waveform 4 Level 4 compliance | Validated protection against 6.4/69 μs pin-injection transients up to 25 °C ambient - required for commercial aircraft subsystem certification |
| IEC 61000-4-5 Class 1–5 support (42 Ω source) | Enables single-device secondary lightning protection across all severity levels without external impedance matching networks |
| RoHS-compliant e3 matte-tin plating | Ensures lead-free assembly compatibility and long-term solder joint reliability in high-reliability reflow profiles |
| MIL-PRF-19500 upscreening options | Supports M, MA, MX, MXL reliability levels for mission-critical applications requiring lot traceability and extended screening |
| Moisture Sensitivity Level 1 | Eliminates dry-pack requirement and floor-life constraints - simplifies SMT line logistics and reduces handling cost |
Applications
| Aerospace Avionics Power Distribution | Automotive 48 V Mild Hybrid Systems |
|---|---|
Use Scenario: Protection of 28 V/48 V DC distribution buses in flight control computers and environmental control systems against lightning-induced surges per DO-160 Section 22. IC Role / Device Role / Timing Role: Primary clamping TVS placed at bus entry point to limit transient overvoltage before it reaches DC-DC converters and microcontrollers. Use Value: Achieves Level 4 pin-injection immunity (Waveform 4) and Class 5 secondary lightning protection (42 Ω) without additional series impedance or filtering components. | Use Scenario: Load-dump suppression on 48 V battery rails in mild hybrid vehicles, where alternator regulation failure can generate >60 V spikes lasting 400 ms. IC Role / Device Role / Timing Role: Unidirectional TVS mounted directly across battery input to clamp voltage excursions below 100 V during ISO 16750-2 compliant load-dump events. Use Value: 18,000 W PPP rating handles full energy of 48 V load-dump pulses without degradation, validated per AEC-Q101 stress testing. |
| Industrial Motor Drive DC Bus | Railway Signaling Power Interfaces |
Use Scenario: Surge protection on DC link capacitors of variable-frequency drives subjected to switching transients and induced RFI from nearby IGBT commutation. IC Role / Device Role / Timing Role: Clamping device placed between DC+ and DC− rails to absorb repetitive 10/1000 μs transients generated by regenerative braking or contactor switching. Use Value: Low RθJC = 0.7 °C/W enables stable operation at 0.05% duty factor, supporting continuous motor drive uptime in factory automation. | Use Scenario: Secondary surge protection on 72 V signaling interfaces in European railway signaling cabinets exposed to induced surges from traction current harmonics and nearby lightning strikes. IC Role / Device Role / Timing Role: TVS installed at cabinet entry point to meet EN 50121-4 immunity requirements for rolling stock electronics. Use Value: Validated IEC 61000-4-5 Class 4 performance with 12 Ω source impedance ensures compliance without redesigning existing enclosure-level protection architecture. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ60A | 600 W PPP rating (vs. 18,000 W); SMA package; RθJC not specified | Not suitable for DO-160F Level 4 or IEC 61000-4-5 Class 4+; limited to low-energy ESD/EFT | Select only for board-level ESD protection where surge energy is <10 J - not a functional replacement for MAPLAD18KP60AE3 |
| SMCJ60A | 1500 W PPP rating; SMC package; 1.5 °C/W typical RθJC; no DO-160F validation data | Lacks RTCA/DO-160F qualification and multi-stroke lightning endurance; unsuitable for certified avionics | Acceptable for industrial 48 V bus protection where DO-160F or Class 5 compliance is not required |
Compared with SMBJ60A and SMCJ60A, MAPLAD18KP60AE3 provides 12× and 12× higher peak pulse power respectively, certified DO-160F Waveform 4 Level 4 immunity, and a thermally optimized metal-base package enabling direct heatsink attachment - making it uniquely suited for aerospace-grade and high-reliability automotive surge protection.
Availability
MAPLAD18KP60AE3 is available at Aetrix Electronics and suitable for aerospace avionics, automotive 48 V mild hybrid systems, and industrial motor drive DC bus protection requiring stable component supply and long-term lifecycle assurance.
Supply support for MAPLAD18KP60AE3 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 solutions for aerospace, defense, and industrial markets.
The MAPLAD family was developed specifically for high-power, surface-mount transient suppression in safety-critical platforms requiring DO-160, AEC-Q101, and IEC 61000-4-5 compliance - emphasizing thermal robustness, multi-stroke endurance, and qualification-grade traceability.
FAQ
What is the clamping voltage of MAPLAD18KP60AE3 at its rated peak pulse current?
The MAPLAD18KP60AE3 has a maximum clamping voltage (VC) of 96.8 V when subjected to its rated peak impulse current (IPP) of 186 A under 10/1000 μs waveform conditions. This value is guaranteed per the manufacturer's electrical characteristics table and ensures protected downstream components remain within safe voltage limits during surge events. The MAPLAD18KP60AE3 achieves this clamping performance while maintaining low leakage (<10 μA) at its 60 V standoff voltage.
Is MAPLAD18KP60AE3 qualified for automotive applications?
Yes, MAPLAD18KP60AE3 is tested and qualified to AEC-Q101 standards for discrete semiconductors, confirming its suitability for automotive under-hood and powertrain applications. It supports 48 V mild hybrid load-dump protection per ISO 16750-2 and provides validated thermal performance up to +150 °C junction temperature. The MAPLAD18KP60AE3 also offers optional MIL-PRF-19500 upscreening for enhanced reliability in mission-critical vehicle subsystems.
Does MAPLAD18KP60AE3 require a heatsink for standard operation?
MAPLAD18KP60AE3 does not require an external heatsink for single-pulse surge events due to its 18,000 W peak pulse power rating and low RθJC of 0.7 °C/W. However, for repetitive surge conditions (e.g., >0.05% duty factor) or elevated ambient temperatures, direct mounting of its metal base to a PCB copper pour or external heatsink is essential to maintain junction temperature below 150 °C. The MAPLAD18KP60AE3 thermal design relies on this metal-base interface - not top-side pads - for effective heat transfer.
What does the "E3" suffix indicate in MAPLAD18KP60AE3?
"E3" in MAPLAD18KP60AE3 denotes RoHS-compliant matte-tin plating on the device terminals, conforming to EU Directive 2011/65/EU. This finish ensures compatibility with lead-free soldering processes and meets IPC/JEDEC J-STD-020B moisture sensitivity Level 1 requirements - eliminating the need for dry-packaging or floor-life controls. The MAPLAD18KP60AE3's E3 designation is verified in the official Microsemi nomenclature guide and applies to both solderability and environmental compliance.
Can MAPLAD18KP60AE3 be used for bidirectional surge protection?
No, MAPLAD18KP60AE3 is a unidirectional TVS diode, as indicated by the "A" (not "CA") suffix in its part number. For bidirectional protection, the equivalent part is MAPLAD18KP60CA. Using MAPLAD18KP60AE3 in AC-coupled or bipolar signal paths would result in forward conduction during negative transients, potentially damaging the device or failing to suppress. Always match polarity: MAPLAD18KP60AE3 for DC-positive rails; MAPLAD18KP60CA for symmetric surge environments like data lines or AC inputs.
MAPLAD18KP60AE3 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):
- 60V
- Voltage - Breakdown (Min):
- 66.7V
- Voltage - Clamping (Max) @ Ipp:
- 96.8V
- Current - Peak Pulse (10/1000µs):
- 186A
- Power - Peak Pulse:
- 18000W (18kW)
- 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
MAPLAD18KP60AE3 FAQ
1.How can I place an order for MAPLAD18KP60AE3 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAPLAD18KP60AE3 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 MAPLAD18KP60AE3 reliable?
The price and inventory of MAPLAD18KP60AE3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAPLAD18KP60AE3 is usually 5 days.
3.What payment methods are accepted for MAPLAD18KP60AE3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAPLAD18KP60AE3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAPLAD18KP60AE3?
MAPLAD18KP60AE3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAPLAD18KP60AE3 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 MAPLAD18KP60AE3?
For technical support, including MAPLAD18KP60AE3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAPLAD18KP60AE3 requirements.
6.How does Aetrix verify that MAPLAD18KP60AE3 is sourced from the original manufacturer or authorized distributors?
All MAPLAD18KP60AE3 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 MAPLAD18KP60AE3 meets industry standards.
7.What is the process for return or replacement of MAPLAD18KP60AE3?
All MAPLAD18KP60AE3 units undergo pre-shipment inspection (PSI). If there is an issue with MAPLAD18KP60AE3, 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 MAPLAD18KP60AE3 part is unused and in its original packaging.
Return procedure for MAPLAD18KP60AE3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAPLAD18KP60AE3 Tags
-
ESD9B5.0ST5G
onsemi
-
DESD3V3E1BL-7B
Diodes Incorporated
-
ESD5Z3.3T1G
onsemi
-
D5V0H1B2LP-7B
Diodes Incorporated
-
D5V0P1B2LP-7B
Diodes Incorporated
-
DESD5V0U1BA-7
Diodes Incorporated
-
ESD5Z5.0T1G
onsemi
-
DESD5V0U1BB-7
Diodes Incorporated
-
D12V0L1B2LP-7B
Diodes Incorporated
-
PESD2V0Y1BSFYL
Nexperia USA Inc.
-
DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
-
D5V0L1B2WS-7
Diodes Incorporated
Tech Hub
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
