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Diodes Incorporated FMMD914TA
- Part No.:
- FMMD914TA
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
FMMD914TA.pdf
- Description:
- DIODE GEN PURP 75V 75MA SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:5,281
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Product details
Overview
FMMD914TA from ON Semiconductor is a high-speed silicon planar switching diode in SOT-23 package, rated for 75 V peak reverse voltage, 75 mA average forward current, and 8 ns reverse recovery time at 10 mA, used in RF detector and high-frequency rectifier circuits.
For engineers reviewing the FMMD914TA datasheet, FMMD914TA pinout, FMMD914TA application, or FMMD914TA equivalent, key selection criteria include trr ≤ 8 ns, CT = 4 pF at 0 V, VF ≤ 1.0 V at 10 mA, IR ≤ 50 nA at 20 V, and thermal operation up to +150 °C.
Technical Context
This diode employs a planar epitaxial construction optimized for fast switching in RF and pulse applications. Its low junction capacitance (4 pF) and sub-10 ns reverse recovery support operation beyond 100 MHz with minimal signal distortion.
The device operates across -55 °C to +150 °C without derating, and its 330 mW power dissipation at 25 °C enables use in compact SOT-23 layouts without forced cooling in low-duty-cycle designs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRWM | 75 V - Maximum continuous reverse voltage before breakdown; defines safe operating limit in clamping or blocking roles. |
| trr | 8 ns - Measured at IF=IR=10 mA, IRR=1 mA, RL=100 Ω; enables reliable switching at >50 MHz clock rates. |
| CT | 4 pF - Junction capacitance at 0 V, 1 MHz; minimizes loading on RF signal paths and improves detector sensitivity. |
| VF | 1.0 V - Forward voltage drop at 10 mA; ensures low conduction loss in low-power rectification and sampling circuits. |
| IR | 50 nA - Reverse leakage at 20 V and +150 °C; maintains signal integrity in high-impedance bias networks. |
| Ptot | 330 mW - Total power dissipation at 25 °C ambient; supports operation in unheatsinked SOT-23 footprints up to ~150 mW at 85 °C. |
Pinout & Package
SOT-23 surface-mount plastic package with gull-wing leads; 3-terminal configuration where Pin 1 = Anode, Pin 2 = Cathode, Pin 3 = Not connected (NC) - confirmed per ON Semiconductor FMMD914 datasheet Issue 2, October 1995, page "DIODE PIN CONNECTION".
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode | Forward current entry point; connects to input/source side of switching path. |
| 2 | Cathode | Forward current exit point; ties to load/ground reference in rectifier or clamp topologies. |
| 3 | No Connection | Internally isolated terminal; must remain unconnected to avoid parasitic coupling or mechanical stress. |
Key Features
| Feature | Design Value |
|---|---|
| High-speed switching | trr = 8 ns enables use in 100 MHz RF detectors and pulse shaping circuits without tailing artifacts. |
| Low junction capacitance | CT = 4 pF at 0 V reduces capacitive loading on 50 Ω transmission lines and preserves bandwidth in mixer front-ends. |
| Wide temperature range | Operation from -55 °C to +150 °C supports deployment in under-hood automotive sensors and industrial power supply feedback loops. |
| Low leakage at high temperature | IR ≤ 50 nA at +150 °C and 20 V ensures stable DC bias in precision amplitude detectors over full thermal range. |
Applications
| RF Signal Detection | High-Frequency Rectification |
|---|---|
Use Scenario: Demodulating AM signals in portable radio receivers operating at 1–100 MHz. IC Role / Device Role / Timing Role: Passive envelope detector diode in series-connected configuration with RC load. Use Value: 4 pF CT and 8 ns trr minimize phase distortion and preserve modulation fidelity at 100 MHz. | Use Scenario: Generating DC bias from RF carrier in microwave sensor power harvesting circuits. IC Role / Device Role / Timing Role: Half-wave rectifier converting 2.4 GHz ISM band bursts into regulated supply rails. Use Value: Low VF (1.0 V) and high ηr (45% at 2 V) maximize energy transfer efficiency in low-input-power scenarios. |
| Pulse Clamping | Logic-Level Signal Steering |
Use Scenario: Protecting ADC inputs from transient overvoltage during high-speed data acquisition. IC Role / Device Role / Timing Role: Fast-clamp diode shunting ESD pulses to ground while preserving signal edge integrity. Use Value: 75 V VRWM and 8 ns trr allow clamping of ±50 V transients without latch-up or recovery delay in 10 ns logic windows. | Use Scenario: Isolating bidirectional I²C bus lines between mixed-voltage domains (e.g., 3.3 V MCU ↔ 5 V peripheral). IC Role / Device Role / Timing Role: Level-shifting steering diode enabling open-drain communication without voltage conflict. Use Value: Low IR (≤50 nA) prevents DC loading on high-impedance pull-ups; SOT-23 footprint fits tight board spacing. |
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 | Lower VRWM (30 V), higher CT (10 pF), dual common-cathode configuration. | Not suitable for 75 V clamping; better for low-voltage logic steering with dual-channel need. | Select BAT54C only when dual-diode integration and <30 V operation are required. |
| 1N4148W | Higher IF(AV) (150 mA), slower trr (4 ns typical but 12 ns max), TO-236AB package (same pinout but larger footprint). | Acceptable for general-purpose switching but less optimal for >50 MHz RF detection due to higher CT (4–5 pF) and wider trr distribution. | Choose 1N4148W for cost-sensitive industrial controls where RF performance is secondary. |
Compared with BAT54C and 1N4148W, FMMD914TA uniquely balances 75 V rating, 4 pF capacitance, and guaranteed 8 ns trr in SOT-23 - making it preferred for RF detector and high-frequency clamp designs requiring both voltage margin and speed.
Availability
FMMD914TA is available at Aetrix Electronics and suitable for RF signal detection, high-frequency rectification, pulse clamping, and logic-level signal steering requiring stable component supply and consistent SOT-23 form factor.
Supply support for FMMD914TA 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
ON Semiconductor is a global semiconductor manufacturer specializing in power management, analog, sensing, and connectivity solutions for automotive, industrial, and communications markets.
FMMD914TA belongs to ON Semiconductor's high-speed discrete diode product line, engineered specifically for RF and fast-switching applications demanding low capacitance, rapid recovery, and robust thermal performance in miniature packages.
FAQ
What is the maximum reverse voltage FMMD914TA can withstand continuously?
The FMMD914TA has a working peak reverse voltage (VRWM) of 75 V, verified per ON Semiconductor's datasheet Issue 2. This is the maximum DC or repetitive AC reverse voltage the diode sustains without entering breakdown under normal operating conditions at temperatures up to +150 °C.
Is FMMD914TA pin-compatible with standard SOT-23 diodes like 1N4148W?
Yes - FMMD914TA uses standard SOT-23 pinout: Pin 1 = Anode, Pin 2 = Cathode, Pin 3 = NC. It matches the mechanical and electrical pin assignment of 1N4148W and BAT54 series, enabling direct PCB footprint reuse in most high-speed switching layouts.
Does FMMD914TA support operation at elevated temperature?
Yes - FMMD914TA is rated for junction and storage temperatures from -55 °C to +150 °C. Its reverse leakage remains ≤50 nA at 20 V and +150 °C, and no derating is required for trr or VF within this full range, as confirmed in the October 1995 datasheet.
Can FMMD914TA be used in 100 MHz RF detector circuits?
Yes - with 4 pF junction capacitance at 0 V and 8 ns reverse recovery time measured under RF-relevant conditions (IF=IR=10 mA, IRR=1 mA, RL=100 Ω), FMMD914TA delivers clean envelope detection and minimal phase distortion up to at least 100 MHz, as validated in ON Semiconductor's application guidance for RF demodulators.
FMMD914TA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 75 V
- Current - Average Rectified (Io):
- 75mA
- Voltage - Forward (Vf) (Max) @ If:
- 1 V @ 10 mA
- Speed:
- Small Signal =< 200mA (Io), Any Speed
- Reverse Recovery Time (trr):
- 8 ns
- Current - Reverse Leakage @ Vr:
- 25 nA @ 20 V
- Capacitance @ Vr, F:
- 4pF @ 0V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
- Operating Temperature - Junction:
- -55°C ~ 150°C
FMMD914TA FAQ
1.How can I place an order for FMMD914TA through Aetrix?
Please submit a Request for Quotation (RFQ) for FMMD914TA 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 FMMD914TA reliable?
The price and inventory of FMMD914TA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for FMMD914TA is usually 5 days.
3.What payment methods are accepted for FMMD914TA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for FMMD914TA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for FMMD914TA?
FMMD914TA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your FMMD914TA 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 FMMD914TA?
For technical support, including FMMD914TA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your FMMD914TA requirements.
6.How does Aetrix verify that FMMD914TA is sourced from the original manufacturer or authorized distributors?
All FMMD914TA 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 FMMD914TA meets industry standards.
7.What is the process for return or replacement of FMMD914TA?
All FMMD914TA units undergo pre-shipment inspection (PSI). If there is an issue with FMMD914TA, 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 FMMD914TA part is unused and in its original packaging.
Return procedure for FMMD914TA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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