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Nexperia USA Inc. PMEG3005ET-QR
- Part No.:
- PMEG3005ET-QR
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
PMEG3005ET-QR.pdf
- Description:
- DIODE SCHOTTKY 30V 500MA TO236AB
- Quantity:
- Payment:
- Shipping:
Inventory:8,953
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Product details
Overview
PMEG3005ET-QR from Nexperia is a 30 V, 0.5 A automotive-qualified Schottky barrier rectifier in SOT23 package, featuring 380–430 mV forward voltage at 500 mA, integrated guard ring for stress protection, and optimized for low-voltage DC-to-DC conversion in space-constrained automotive modules.
For engineers reviewing the PMEG3005ET-QR datasheet, PMEG3005ET-QR pinout, PMEG3005ET-QR application, or PMEG3005ET-QR equivalent, key selection criteria include ultra-low VF performance at 500 mA, AEC-Q101 qualification, reverse voltage rating of 30 V, thermal resistance (Rth(j-a)) down to 300 K/W with enhanced pad, and n.c. terminal isolation in 3-pin SOT23 layout.
Technical Context
This MEGA Schottky rectifier uses planar silicon construction with an integrated guard ring to suppress edge breakdown under high dv/dt or mechanical stress-critical for automotive transients. Its low junction capacitance (55–70 pF at 1 V) and sub-430 mV VF support high-frequency switching efficiency in buck converters and reverse polarity protection circuits.
The device operates across −65 °C to +150 °C ambient, with pulsed forward current capability up to 10 A (8 ms square wave) and thermal design enabled by two mounting configurations: standard footprint (Rth(j-a) = 440 K/W) or 1 cm² cathode pad (Rth(j-a) = 300 K/W).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reverse Voltage (VR) | 30 V - supports 24 V automotive rail clamping and 12 V system reverse blocking without derating. |
| Forward Current (IF) | 0.5 A continuous - rated for sustained operation in low-power DC/DC stages and load switches. |
| Forward Voltage (VF) | 380–430 mV @ 500 mA - reduces conduction loss by >40% vs. standard Schottkys, enabling higher efficiency at light-to-moderate loads. |
| Reverse Current (IR) | 40–150 µA @ 30 V - ensures minimal leakage in battery-backed or always-on circuits at elevated temperature. |
| Diode Capacitance (Cd) | 55–70 pF @ 1 V, 1 MHz - enables clean switching edges and low EMI in >1 MHz SMPS topologies. |
| Junction Temperature (Tj) | 150 °C max - allows operation in engine bay or under-hood environments with proper PCB thermal relief. |
Pinout & Package
Encapsulated in a standard SOT23 plastic surface-mount package (2.9 mm × 1.3 mm × 1.0 mm body, 1.9 mm lead pitch), with gull-wing leads and tin-plated terminations compatible with reflow and wave soldering per IPC-J-STD-020.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode (A) | Main current entry point; connects to input rail or switch node in buck/flyback topologies. |
| 2 | Not Connected (n.c.) | Internally isolated; must remain unconnected on PCB to avoid parasitic coupling or thermal interference. |
| 3 | Cathode (K) | Main current exit path; tied to ground or output rail; requires ≥1 cm² copper pour for Rth(j-a) = 300 K/W. |
Key Features
| Feature | Design Value |
|---|---|
| Guard Ring Integration | Suppresses edge breakdown during load dump or ISO 7637-2 pulse 5a, improving long-term reliability in automotive transients. |
| AEC-Q101 Qualification | Validated for automotive use including HTOL, temperature cycling, and HAST-no additional qualification required for Tier-1 designs. |
| Ultra-Low VF at 500 mA | 380–430 mV enables <150 mW conduction loss at full rated current, reducing thermal load in sealed enclosures. |
| Low Capacitance (55–70 pF) | Minimizes switching losses and ringing in high-frequency synchronous rectifiers and OR-ing applications. |
Applications
| Automotive Body Control Module (BCM) | USB-C Power Delivery Input Protection |
|---|---|
|
Use Scenario: Reverse polarity protection on 12 V supply rail feeding microcontroller, CAN transceiver, and LED drivers. IC Role / Device Role / Timing Role: Unidirectional current gate placed between fuse and LDO input to block battery misconnection damage. Use Value: 30 V rating withstands load dump spikes; 430 mV VF limits voltage drop to <0.5% of nominal rail, preserving brown-out margin. |
Use Scenario: Input-side OR-ing diode in dual-input (USB-C + barrel jack) power path for portable medical monitor. IC Role / Device Role / Timing Role: Low-loss forward conduction selector preventing backfeed between sources while enabling seamless switchover. Use Value: 55 pF capacitance avoids signal integrity issues on USB-C CC lines; 0.5 A rating matches typical PD 3.0 sink requirements. |
| Industrial IoT Sensor Node Power Stage | Low-Power Buck Converter Output Rectifier |
|
Use Scenario: Input protection for energy-harvesting circuit powered by piezoelectric transducer with bidirectional output polarity. IC Role / Device Role / Timing Role: Polarity correction element converting AC-like transducer output into unidirectional charging current for supercapacitor buffer. Use Value: 380 mV typical VF maximizes harvested energy transfer efficiency at µA–mA levels; SOT23 footprint fits sub-100 mm² PCB area budgets. |
Use Scenario: Synchronous rectifier replacement in 3.3 V/0.4 A buck converter powering FPGA configuration memory. IC Role / Device Role / Timing Role: Freewheeling diode conducting during high-side MOSFET off-time to maintain inductor current continuity. Use Value: Sub-430 mV VF reduces average conduction loss by 220 mW vs. 1N5819, lowering thermal rise in thermally constrained FPGA carrier boards. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| RB520S-30T1G | 30 V, 0.2 A; VF = 370 mV @ 100 mA; no AEC-Q101 qualification; SOD-523 package (1.2 × 0.8 mm). | Limited to non-automotive, low-current (<200 mA) applications due to lower IF rating and absence of automotive stress testing. | Select when board space is critical and automotive qualification is unnecessary; verify thermal margin at 0.5 A. |
| SS32HE3/5BT | 20 V, 3 A; VF = 450 mV @ 3 A; AEC-Q101 qualified; SMA package (4.5 × 2.7 mm); higher leakage (200 µA @ 20 V). | Suited for higher-current 12 V systems but unsuitable for 30 V reverse blocking or compact layouts requiring SOT23. | Choose only if system requires >0.5 A current and can accommodate larger footprint; avoid where 30 V VR or size constraints apply. |
Compared with RB520S-30T1G and SS32HE3/5BT, PMEG3005ET-QR uniquely balances AEC-Q101 compliance, 30 V blocking, 0.5 A rating, and SOT23 miniaturization-making it the sole option meeting all three requirements simultaneously in automotive-grade low-power rectification.
Availability
PMEG3005ET-QR is available at Aetrix Electronics and suitable for automotive body control modules, USB-C power delivery protection circuits, and industrial IoT sensor node power stages requiring stable component supply with guaranteed long-term lifecycle support.
Supply support for PMEG3005ET-QR 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 essential efficiency-enhancing components, delivering high-performance logic, discrete, and MOSFET solutions for automotive, industrial, and mobile markets.
The MEGA Schottky series targets automotive and high-reliability power conversion, emphasizing ultra-low VF, robust transient immunity, and AEC-Q101 compliance for demanding under-hood and safety-critical subsystems.
FAQ
Is PMEG3005ET-QR pin-compatible with standard SOT23 diodes like BAT54?
No. While both use SOT23 packaging, PMEG3005ET-QR has Pin 2 designated as n.c. (not connected), whereas BAT54 variants use Pin 2 as cathode in dual-diode configurations. Direct substitution would cause incorrect biasing or open-circuit failure. Always verify pin mapping using Table 2 from the official datasheet.
Can PMEG3005ET-QR replace a 1N5819 in existing designs?
Yes, with validation. PMEG3005ET-QR offers lower VF (430 mV vs. 450–600 mV), smaller footprint (SOT23 vs. DO-41), and AEC-Q101 qualification-but requires PCB layout revision due to different pinout (anode/cathode/n.c. vs. anode/cathode). Thermal performance also differs: Rth(j-a) is 300–440 K/W vs. ~100 K/W for through-hole 1N5819, so power dissipation must be re-evaluated.
What is the significance of the 'Q' suffix in PMEG3005ET-QR?
The 'Q' denotes AEC-Q101 qualification per Automotive Electronics Council standards, confirming successful completion of stress tests including HTOL, temperature cycling, and HAST. The 'R' suffix indicates tape-and-reel packaging per ordering code PMEG3005ET-QR, not a functional variant-the electrical and thermal specs match the base PMEG3005ET-Q part.
Does the n.c. pin require PCB routing or grounding?
No. Pin 2 is internally unconnected and must remain floating on the PCB. Routing or grounding introduces parasitic capacitance, potential noise coupling, and violates the manufacturer's mounting recommendations. The datasheet explicitly states "not connected" and shows no internal bond wire to this terminal in the simplified outline.
PMEG3005ET-QR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- -
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 30 V
- Current - Average Rectified (Io):
- 500mA
- Voltage - Forward (Vf) (Max) @ If:
- 430 mV @ 500 mA
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 150 µA @ 30 V
- Capacitance @ Vr, F:
- 55pF @ 1V, 1MHz
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TO-236AB
- Operating Temperature - Junction:
- 150°C
PMEG3005ET-QR FAQ
1.How can I place an order for PMEG3005ET-QR through Aetrix?
Please submit a Request for Quotation (RFQ) for PMEG3005ET-QR 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 PMEG3005ET-QR reliable?
The price and inventory of PMEG3005ET-QR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PMEG3005ET-QR is usually 5 days.
3.What payment methods are accepted for PMEG3005ET-QR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PMEG3005ET-QR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PMEG3005ET-QR?
PMEG3005ET-QR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PMEG3005ET-QR 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 PMEG3005ET-QR?
For technical support, including PMEG3005ET-QR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PMEG3005ET-QR requirements.
6.How does Aetrix verify that PMEG3005ET-QR is sourced from the original manufacturer or authorized distributors?
All PMEG3005ET-QR 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 PMEG3005ET-QR meets industry standards.
7.What is the process for return or replacement of PMEG3005ET-QR?
All PMEG3005ET-QR units undergo pre-shipment inspection (PSI). If there is an issue with PMEG3005ET-QR, 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 PMEG3005ET-QR part is unused and in its original packaging.
Return procedure for PMEG3005ET-QR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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