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Nexperia USA Inc. PMBD914-QR
- Part No.:
- PMBD914-QR
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
PMBD914-QR.pdf
- Description:
- PMBD914-Q/SOT23/TO-236AB
- Quantity:
- Payment:
- Shipping:
Inventory:3,272
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Product details
Overview
PMBD914-QR from Nexperia is a high-speed switching diode fabricated in planar technology, housed in an AEC-Q101-qualified SOT23 (TO-236AB) package. It delivers trr ≤ 4 ns reverse recovery time, Cd ≤ 1.5 pF capacitance, and VR ≤ 100 V, enabling fast signal routing in automotive power management and communication interface circuits.
For engineers reviewing the PMBD914-QR datasheet, PMBD914-QR pinout, PMBD914-QR application, or PMBD914-QR equivalent, key selection criteria include verified reverse recovery timing under IF = 10 mA / IR = 10 mA conditions, low-leakage performance at 75 V and 150 °C, and SOT23 terminal layout compatibility with high-density PCB layouts.
Technical Context
This discrete silicon switching diode operates as a unidirectional current path with anode (Pin 1), no-connect (Pin 2), and cathode (Pin 3) terminals. Its planar construction supports stable junction temperature up to 150 °C and achieves 4 ns trr using standardized test circuitry per IEC 60134 with RL = 100 Ω and IR(meas) = 1 mA.
The device exhibits VF = 855 mV at IF = 10 mA and IR ≤ 25 nA at VR = 25 V, 25 °C - characteristics optimized for low-loss, high-frequency flyback and clamping functions. Thermal resistance Rth(j-a) = 500 K/W (free air, FR4 PCB) defines its derating behavior above Tamb = 25 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reverse Recovery Time (trr) | ≤ 4 ns under IF = 10 mA, IR = 10 mA, RL = 100 Ω - enables >100 MHz switching in pulse shaping and data line protection |
| Diode Capacitance (Cd) | ≤ 1.5 pF at VR = 0 V, f = 1 MHz - minimizes signal distortion in RF and high-speed digital interfaces |
| Forward Voltage (VF) | 855 mV at IF = 10 mA, 25 °C - reduces conduction loss in low-voltage logic-level clamping |
| Repetitive Peak Reverse Voltage (VRRM) | 100 V - supports 48 V automotive bus transient suppression and 24 V industrial control inputs |
| Thermal Resistance (Rth(j-a)) | 500 K/W on FR4 PCB - requires ambient derating above 25 °C per Fig. 5; limits continuous IF to ~150 mA at Tamb = 85 °C |
| Reverse Leakage (IR) | ≤ 1 µA at VR = 75 V, 25 °C - ensures reliable off-state isolation in battery-sensed wake-up circuits |
Pinout & Package
Package: SOT23 (TO-236AB), 3-terminal surface-mount plastic package, 2.9 mm × 1.3 mm × 1.0 mm body, 1.9 mm lead pitch. Qualified per AEC-Q101 for automotive use.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode (A) | Current entry point; connects to higher-potential node in forward-biased operation |
| 2 | No Connect (n.c.) | Internally isolated; must remain unconnected on PCB to avoid parasitic coupling or thermal stress |
| 3 | Cathode (K) | Current exit point; ties to reference/ground or lower-potential rail; solder point defines Rth(j-sp) = 330 K/W |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing - suitable for under-hood ECUs and ADAS sensor interfaces |
| Low trr with defined test conditions | 4 ns measured using standardized oscilloscope setup (RS = 50 Ω, IR(meas) = 1 mA) - enables consistent timing predictability across production lots |
| Controlled VF vs. temperature | VF drift < 0.5 mV/°C over −55 °C to 150 °C - maintains stable clamping threshold in wide-temperature engine control modules |
| Small footprint with thermal-aware layout | SOT23 outline includes dedicated cathode tab for solder-point thermal path (Rth(j-sp) = 330 K/W) - improves heat extraction without external heatsinking |
Applications
| Automotive CAN Transceiver Protection | USB 2.0 Data Line Clamping |
|---|---|
Use Scenario: Bidirectional ESD and surge protection on CAN_H/CAN_L lines in body control modules. IC Role / Device Role: Fast-switching clamp diode placed between data line and VCC/GND rails. Use Value: 4 ns trr prevents signal edge degradation at 1 Mbps CAN FD rates; 100 V VRRM withstands load-dump transients. |
Use Scenario: Low-capacitance ESD clamp on D+/D− lines of USB 2.0 host ports. IC Role / Device Role: Signal-line transient suppressor tied to 3.3 V supply and ground. Use Value: 1.5 pF Cd avoids signal integrity loss at 480 Mbps; sub-1 µA IR preserves bus idle state leakage budget. |
| Industrial PLC Digital Input Conditioning | DC-DC Converter Snubber Network |
Use Scenario: Input stage protection for 24 V dry-contact sensing in programmable logic controllers. IC Role / Device Role: Reverse-polarity and overvoltage clamp on optocoupler input side. Use Value: 100 V VRRM accommodates 2× nominal supply; AEC-Q101 qualification ensures long-term field reliability in factory environments. |
Use Scenario: RC snubber across MOSFET drain-source in 500 kHz buck converter. IC Role / Device Role: High-speed freewheeling path during switch turn-off. Use Value: 4 ns trr minimizes voltage overshoot; 215 mA IF rating supports peak snubber currents without thermal runaway. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed switching diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BAT54C-Q | Lower VRRM (30 V), higher Cd (10 pF), dual-common-cathode configuration | Not suitable for 48 V+ automotive bus protection; better for low-voltage logic-level steering | Select when dual-diode integration reduces board area and system voltage stays ≤ 24 V |
| 1N4148W-Q | Higher trr (4–6 ns typ), same VRRM (100 V), larger SOD-123 package (3.7 mm × 1.6 mm) | Less dense placement; slower timing margin in >50 MHz clocked systems | Choose when legacy footprint compatibility or higher surge rating (IFSM = 4 A) outweighs speed and size requirements |
Compared with BAT54C-Q and 1N4148W-Q, PMBD914-QR uniquely balances 4 ns trr, 1.5 pF Cd, and AEC-Q101 qualification in the smallest SOT23 footprint - making it optimal for space-constrained, high-frequency automotive signal conditioning where both speed and reliability are non-negotiable.
Availability
PMBD914-QR is available at Aetrix Electronics and suitable for automotive ECU design, USB interface protection, and industrial PLC input conditioning requiring stable component supply across multi-year production cycles.
Supply support for PMBD914-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 high-volume, high-reliability discrete and logic devices, with core expertise in automotive-qualified components and advanced packaging.
The PMBD914-QR belongs to Nexperia's AEC-Q101-qualified high-speed diode product line, engineered specifically for signal integrity preservation in automotive communication buses and industrial real-time control systems.
FAQ
Is PMBD914-QR pin-compatible with standard SOT23 diodes like 1N4148W?
Yes - PMBD914-QR uses the standard SOT23 pinout (Anode–n.c.–Cathode), matching mechanical and solder footprint dimensions of 1N4148W and BAT54 series. Pin 2 is internally unconnected and must remain floating on PCB; no rework or adapter is needed for drop-in replacement in existing SOT23 layouts.
What is the maximum continuous forward current at 85 °C ambient?
Per the derating curve (Fig. 5), PMBD914-QR supports ~150 mA continuous forward current at Tamb = 85 °C on FR4 PCB with standard footprint. This is derived from Ptot = 250 mW and Rth(j-a) = 500 K/W, limiting junction temperature to 150 °C under steady-state conditions.
Does the "n.c." pin require grounding or can it be left floating?
Pin 2 is internally not connected and must remain unconnected on the PCB. Grounding or routing it introduces parasitic capacitance and potential thermal coupling that degrade trr and thermal performance. The datasheet explicitly prohibits connection, and layout guidelines confirm floating is mandatory for specification compliance.
How does PMBD914-QR perform under repetitive 100 V transients at 150 °C junction temperature?
At Tj = 150 °C, IR rises to ≤ 50 µA at VR = 75 V (Table 7), confirming stable blocking behavior near absolute maximum ratings. VRRM remains rated at 100 V regardless of temperature, but sustained operation at both max VR and max Tj simultaneously is not recommended - design margin should maintain VR ≤ 75 V above 125 °C.
PMBD914-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:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 100 V
- Current - Average Rectified (Io):
- 215mA
- Voltage - Forward (Vf) (Max) @ If:
- 1.25 V @ 150 mA
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 4 ns
- Current - Reverse Leakage @ Vr:
- 1 µA @ 75 V
- Capacitance @ Vr, F:
- 1.5pF @ 0V, 1MHz
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TO-236AB
- Operating Temperature - Junction:
- 175°C
PMBD914-QR FAQ
1.How can I place an order for PMBD914-QR through Aetrix?
Please submit a Request for Quotation (RFQ) for PMBD914-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 PMBD914-QR reliable?
The price and inventory of PMBD914-QR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PMBD914-QR is usually 5 days.
3.What payment methods are accepted for PMBD914-QR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PMBD914-QR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PMBD914-QR?
PMBD914-QR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PMBD914-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 PMBD914-QR?
For technical support, including PMBD914-QR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PMBD914-QR requirements.
6.How does Aetrix verify that PMBD914-QR is sourced from the original manufacturer or authorized distributors?
All PMBD914-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 PMBD914-QR meets industry standards.
7.What is the process for return or replacement of PMBD914-QR?
All PMBD914-QR units undergo pre-shipment inspection (PSI). If there is an issue with PMBD914-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 PMBD914-QR part is unused and in its original packaging.
Return procedure for PMBD914-QR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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