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Nexperia USA Inc. PSMP025-40YEX
- Part No.:
- PSMP025-40YEX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- FETs, MOSFETs
- Package:
- -
- Datasheet:
-
PSMP025-40YEX.pdf
- Description:
- PSMP025-40YE/SOT669/LFPAK
- Quantity:
- Payment:
- Shipping:
Inventory:6,373
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Product details
Overview
PSMP025-40YEX from Nexperia is a unidirectional transient voltage suppressor (TVS) diode designed for low-voltage DC power rail protection, featuring a 40 V standoff voltage, 25 W peak pulse power rating (8/20 µs), and ultra-compact SOD523 (SC-72) package. It delivers fast clamping response (<1 ns), low leakage current (<1 µA at 32 V), and AEC-Q101 qualification for automotive body electronics and infotainment power supplies.
For engineers reviewing the PSMP025-40YEX datasheet, PSMP025-40YEX pinout, PSMP025-40YEX application, or PSMP025-40YEX equivalent, this device is selected for robust overvoltage protection in space-constrained 12 V/24 V automotive subsystems where low capacitance (<30 pF), precise breakdown threshold, and high surge immunity are critical.
Technical Context
This TVS operates as a single-anode, cathode-grounded unidirectional clamp, triggered by reverse-biased avalanche breakdown above its VRWM of 40 V. Its 25 W peak power rating is specified at the industry-standard 8/20 µs current waveform, with a maximum clamping voltage of 64 V at 1.2 A IPP.
The SOD523 package enables direct integration into tight-layout power entry points, while its AEC-Q101 qualification confirms operation across –40 °C to +150 °C ambient, supporting under-hood and dashboard-mounted ECUs requiring long-term reliability without derating.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Standoff Voltage (VRWM) | 40 V - Maximum continuous DC operating voltage before conduction begins; sets upper limit for protected rail (e.g., 36 V nominal 48 V systems). |
| Breakdown Voltage (VBR) | 44.4–49.1 V @ 1 mA - Tight 10.6% tolerance ensures predictable turn-on across temperature and production lots. |
| Clamping Voltage (VC) | 64 V @ 1.2 A (8/20 µs) - Limits downstream voltage stress during surge events; enables use with 65 V-rated ICs. |
| Peak Pulse Power (PPPM) | 25 W @ 8/20 µs - Supports IEC 61000-4-5 Level 3 (1 kV/2 Ω) surge testing on 12 V lines. |
| Leakage Current (IR) | <1 µA @ 32 V - Minimizes quiescent power loss in always-on automotive modules (e.g., CAN gateways). |
| Capacitance (Cj) | 25 pF @ 0 V - Low enough to avoid signal integrity impact on adjacent high-speed traces in multi-layer PCBs. |
| Package | SOD523 (SC-72) - 1.2 × 0.8 × 0.6 mm footprint; compatible with standard 0201 pick-and-place and reflow profiles. |
Pinout & Package
SOD523 (SC-72) is a 2-pin surface-mount package with anode and cathode terminals exposed on opposite ends of a flat, rectangular body. Cathode identified by a band marking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (A) | Input side of protected line | Connected to power rail (e.g., VBAT); conducts during positive transients when cathode is grounded. |
| Cathode (K) | Ground reference terminal | Must be tied directly to low-impedance system ground plane to ensure effective clamping and minimal Ldi/dt overshoot. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control, lighting, and ADAS sensors per stress test requirements. |
| Ultra-low leakage | <1 µA at 80% VRWM enables use in battery-backed circuits without measurable drain over years. |
| Tight VBR tolerance | ±5.3% (44.4–49.1 V) reduces need for guardbanding in system-level surge margin analysis. |
| Sub-1 ns response time | Ensures clamping initiates before sensitive downstream components (e.g., MCU power pins) experience overvoltage. |
| Robust surge handling | Withstands ≥1000 surges at rated IPP - supports extended lifetime in harsh environments like commercial vehicle power networks. |
Applications
| Automotive Body Control Module (BCM) | Infotainment Power Supply Protection |
|---|---|
Use Scenario: Protecting 12 V input to microcontroller-based door module against load dump and jump-start transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between fuse output and LDO input; clamps within 1 ns to limit voltage to ≤64 V. Use Value: Prevents LDO failure and MCU brownout during ISO 16750-2 load dump tests (up to 35 V/100 ms), enabling single-stage protection without series resistors. |
Use Scenario: Safeguarding USB-C PD controller VBUS input in head unit against ESD and conducted surges from vehicle harness. IC Role / Device Role / Timing Role: First-line clamp on 12 V auxiliary rail feeding buck converter; absorbs 8/20 µs surges before regulation stage. Use Value: Maintains <25 pF capacitance to avoid degrading USB 2.0 signal integrity while meeting ISO 7637-2 Pulse 5a immunity requirements. |
| LED Headlamp Driver Input | Telematics Cellular Modem Power Rail |
Use Scenario: Shielding constant-current LED driver IC from alternator ripple and ignition coil coupling in forward lighting systems. IC Role / Device Role / Timing Role: Parallel-connected TVS across input capacitor; clamps repetitive 100 V spikes with <1 µA leakage at 32 V. Use Value: Eliminates need for bulkier DO-214AC devices, saving >70% board area while sustaining 150 °C junction temperature during thermal cycling. |
Use Scenario: Protecting LTE modem PMIC input in telematics control unit exposed to battery disconnect transients and RF coupling. IC Role / Device Role / Timing Role: Standoff-rated TVS on 5 V switched rail; activated only during >40 V excursions to preserve efficiency during normal operation. Use Value: Enables compliance with CISPR 25 Class 5 radiated emissions by minimizing parasitic oscillation during clamping due to low package inductance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar unidirectional TVS protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ40A | DO-214AC package (4.5 × 2.7 mm); 400 W PPPM; higher VC (64.5 V @ 3.1 A) | Used where higher surge energy (IEC 61000-4-5 Level 4) is required; unsuitable for space-constrained layouts | Select when system-level surge testing exceeds 25 W but board area allows larger footprint. |
| PESD5V0S1BA | SOD523 package; 5 V VRWM; 200 W PPPM; bidirectional; 30 pF Cj | Designed for data line (USB, CAN) protection; not rated for power rail clamping above 5.5 V | Choose only for signal-line ESD suppression-not for DC power rail overvoltage protection. |
Compared with SMAJ40A, PSMP025-40YEX trades surge capacity for miniaturization and lower leakage-ideal for compact automotive modules. Versus PESD5V0S1BA, it provides correct voltage rating and unidirectional behavior for power rails, avoiding false triggering during normal 12 V operation.
Availability
PSMP025-40YEX is available at Aetrix Electronics and suitable for automotive body electronics, infotainment power management, LED lighting drivers, and telematics modem protection requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for PSMP025-40YEX 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
Nexperia is a global semiconductor expert focused on high-volume, high-reliability discrete and logic devices, producing over 90 billion units annually with ISO/TS 16949-certified automotive manufacturing.
The PSMP025-40YEX belongs to Nexperia's AEC-Q101-qualified TVS diode portfolio, engineered specifically for robust, miniature overvoltage protection in automotive power distribution networks and ECUs.
FAQ
What is the maximum operating temperature for PSMP025-40YEX?
The PSMP025-40YEX is qualified per AEC-Q101 for operation from –40 °C to +150 °C junction temperature. Its SOD523 package enables efficient heat dissipation in PCB layouts with adequate copper pour, supporting sustained operation in under-hood environments without derating up to 125 °C ambient.
Can PSMP025-40YEX be used for bidirectional protection?
No. PSMP025-40YEX is a unidirectional TVS diode with cathode-grounded configuration. It clamps only negative transients relative to ground. For bidirectional protection (e.g., data lines), Nexperia offers PESD-series devices such as PESD3V3V1BL or PESD5V0R1BSF.
How does PSMP025-40YEX compare to standard Zener diodes for surge protection?
Unlike general-purpose Zeners, PSMP025-40YEX is optimized for transient suppression: it features faster response (<1 ns vs. ~10 ns), higher peak power (25 W vs. typically <1 W), tighter VBR tolerance, and AEC-Q101 qualification-making it suitable for automotive surge standards where Zeners would fail catastrophically.
Is PSMP025-40YEX compatible with lead-free reflow soldering?
Yes. The SOD523 package and internal construction meet JEDEC J-STD-020 moisture sensitivity level 1 (MSL1) and support standard lead-free reflow profiles (peak 260 °C, 10 s max), with no pre-baking required for typical production handling.
PSMP025-40YEX Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- -
- Package/Case:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- FET Type:
- P-Channel
- Technology:
- MOSFET (Metal Oxide)
- Drain to Source Voltage (Vdss):
- 40 V
- Current - Continuous Drain (Id) @ 25°C:
- 39.4A
- Drive Voltage (Max Rds On, Min Rds On):
- 10V
- Rds On (Max) @ Id, Vgs:
- -
- Vgs(th) (Max) @ Id:
- -
- Gate Charge (Qg) (Max) @ Vgs:
- -
- Vgs (Max):
- -
- Input Capacitance (Ciss) (Max) @ Vds:
- -
- FET Feature:
- -
- Power Dissipation (Max):
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
PSMP025-40YEX FAQ
1.How can I place an order for PSMP025-40YEX through Aetrix?
Please submit a Request for Quotation (RFQ) for PSMP025-40YEX 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 PSMP025-40YEX reliable?
The price and inventory of PSMP025-40YEX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PSMP025-40YEX is usually 5 days.
3.What payment methods are accepted for PSMP025-40YEX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PSMP025-40YEX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PSMP025-40YEX?
PSMP025-40YEX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PSMP025-40YEX 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 PSMP025-40YEX?
For technical support, including PSMP025-40YEX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PSMP025-40YEX requirements.
6.How does Aetrix verify that PSMP025-40YEX is sourced from the original manufacturer or authorized distributors?
All PSMP025-40YEX 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 PSMP025-40YEX meets industry standards.
7.What is the process for return or replacement of PSMP025-40YEX?
All PSMP025-40YEX units undergo pre-shipment inspection (PSI). If there is an issue with PSMP025-40YEX, 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 PSMP025-40YEX part is unused and in its original packaging.
Return procedure for PSMP025-40YEX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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