My Inquiry
My Account
Diodes Incorporated SD101C-T
- Part No.:
- SD101C-T
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
SD101C-T.pdf
- Description:
- DIODE SCHOTTKY 40V 15MA DO35
- Quantity:
- Payment:
- Shipping:
Inventory:8,776
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SD101C-T from Diodes Incorporated is a low-leakage, ultra-fast switching Schottky barrier diode in DO-35 glass package, rated for 40 V DC blocking voltage, 15 mA forward current, and 1.0 ns reverse recovery time, used in high-frequency signal demodulation and low-power RF detector circuits.
For engineers reviewing the SD101C-T datasheet, SD101C-T pinout, SD101C-T application, or SD101C-T equivalent, key selection criteria include its 0.39 V forward drop at 1.0 mA, 2.2 pF capacitance at 0 V, cathode-band polarity marking, and RoHS-compliant matte tin terminals - critical for EMI-sensitive analog front-ends and portable battery-powered receivers.
Technical Context
This discrete Schottky diode leverages guard ring construction to suppress transient-induced junction breakdown and enables stable operation across –65 °C to +175 °C ambient. Its 375 °C/W junction-to-ambient thermal resistance and 400 mW power dissipation are validated under lead-temperature-controlled conditions per MIL-STD-202.
The device exhibits nonlinear capacitance-voltage behavior (2.2 pF at 0 V, decreasing with reverse bias), and its sub-nanosecond trr supports >500 MHz small-signal rectification without minority-carrier storage delay - distinguishing it from standard PN junction diodes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VR (DC Blocking) | 40 V - Maximum steady-state reverse voltage before leakage exceeds specification; defines usable range in bias networks and clamp circuits. |
| VF @ 1.0 mA | 0.39 V - Low forward threshold enables efficient detection of weak RF signals without significant DC offset loss. |
| IR @ 30 V | 200 nA - Ultra-low reverse leakage preserves signal integrity in high-impedance sample-and-hold or precision reference paths. |
| CT @ 0 V, 1 MHz | 2.2 pF - Minimal junction capacitance maintains bandwidth in UHF receiver front-ends and mixer applications. |
| trr | 1.0 ns - Enables clean zero-crossing switching in fast pulse shaping and synchronous demodulator designs. |
| PD | 400 mW - Power handling capacity under ambient-lead thermal condition; limits continuous dissipation in unheatsinked PCB layouts. |
Pinout & Package
DO-35 glass axial package with cathode band marking; leads are matte tin-plated, solderable per MIL-STD-202 Method 208; polarity identified by single black band on cathode end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (unbanded end) | Forward current entry point | Connected to lower-potential node in clamping, detection, or OR-ing configurations. |
| Cathode (banded end) | Forward current exit / reverse-blocking terminal | Marked end connects to higher-potential rail; serves as reference node in RF detector output paths. |
Key Features
| Feature | Design Value |
|---|---|
| Guard ring construction | Suppresses edge breakdown during voltage transients, improving reliability in ESD-prone RF input stages. |
| Low VF at microamp bias | Enables sensitive AM/FM envelope detection down to 100 µA signal levels without forward conduction distortion. |
| Sub-ns reverse recovery | Eliminates minority-carrier tail current, preventing false triggering in high-speed sampling gates and clock recovery circuits. |
| RoHS-compliant matte tin finish | Ensures consistent wetting and intermetallic formation during reflow or hand-soldering, reducing void risk in fine-pitch assemblies. |
Applications
| AM Radio Detector | RF Signal Sampler |
|---|---|
Use Scenario: Demodulating amplitude-modulated carrier signals in portable shortwave receivers. IC Role / Device Role / Timing Role: Passive envelope detector converting RF input to baseband audio output. Use Value: 0.39 V VF minimizes detection threshold, preserving weak-signal fidelity; 2.2 pF CT avoids high-frequency roll-off above 10 MHz. | Use Scenario: Capturing instantaneous RF voltage samples for spectrum analysis or power monitoring. IC Role / Device Role / Timing Role: Peak-hold sampling diode in wideband analog signal acquisition path. Use Value: 1.0 ns trr ensures accurate capture of fast-rising RF pulses without storage-induced lag or droop. |
| Low-Power Clamp Circuit | Crystal Oscillator Bias Limiter |
Use Scenario: Protecting ADC inputs from overvoltage transients in battery-operated sensor nodes. IC Role / Device Role / Timing Role: Bidirectional voltage clamp limiting signal swing to ±0.4 V around reference. Use Value: Guard ring structure withstands repetitive 100 V/µs transients; 200 nA IR prevents reference loading in high-Z input stages. | Use Scenario: Limiting drive level in fundamental-mode AT-cut crystal oscillator tanks. IC Role / Device Role / Timing Role: Nonlinear current limiter stabilizing crystal motional current without Q degradation. Use Value: Low CT avoids parasitic resonance shift; low VF ensures symmetric clipping near zero-crossing for low-phase-noise operation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SD101AW-T | Same DO-35 package; 40 V VR, but 0.35 V VF @ 1 mA and 1.5 pF CT - optimized for lower-loss detection. | Better suited for ultra-low-signal AM detection where <0.4 V threshold is critical. | Select SD101AW-T when forward voltage sensitivity outweighs cost or legacy footprint constraints. |
| BAT54C-T | SOT-23 package; dual common-cathode configuration; 30 V VR, 0.24 V VF @ 10 mA, 10 pF CT - higher capacitance, surface-mount only. | Used in space-constrained digital logic clamping, not RF analog paths requiring sub-3 pF. | Choose BAT54C-T only for board-level integration where SMT assembly and dual-diode topology are required. |
Compared with SD101C-T, SD101AW-T delivers lower forward voltage and capacitance for improved RF detection linearity, while BAT54C-T trades off higher CT and different packaging for dual-channel SMT flexibility - neither is pin-compatible, and both require layout revision.
Availability
SD101C-T is available at Aetrix Electronics and suitable for AM radio detectors, RF samplers, low-power clamp circuits, and crystal oscillator bias limiters requiring stable component supply across industrial and consumer electronics production cycles.
Supply support for SD101C-T 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
Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, specializing in high-reliability, application-optimized components for power management, signal integrity, and protection.
The SD101x series belongs to Diodes' general-purpose Schottky diode product line, engineered specifically for high-frequency analog signal conditioning in cost-sensitive, low-power portable electronics.
FAQ
Is SD101C-T suitable for new designs?
No. Diodes Incorporated explicitly marks SD101C-T as "NOT RECOMMENDED FOR NEW DESIGN" and recommends SD101AW–SD101CW variants instead. These newer versions offer improved forward voltage and capacitance specs while maintaining DO-35 compatibility. Legacy use in repair or continuity builds remains valid, but new schematics should specify SD101AW-T or SD101CW-T.
What does the "-T" suffix indicate in SD101C-T?
The "-T" suffix denotes tape-and-reel packaging: 10,000 units per 13-inch reel, compliant with EIA-481 standards. This format supports automated SMT placement despite the DO-35 axial lead form factor, enabling high-volume assembly of RF modules and portable radios using pick-and-place equipment with axial feeders.
How does guard ring construction improve performance?
Guard ring construction surrounds the active P-N junction with a doped region that redistributes electric field lines away from the silicon edge, suppressing premature avalanche breakdown during voltage transients. In SD101C-T, this increases surge tolerance and stabilizes reverse leakage up to 175 °C - essential for automotive-grade RF receivers exposed to load-dump events.
Can SD101C-T replace 1N5711 in RF detector applications?
Yes, with measured trade-offs: SD101C-T offers lower VF (0.39 V vs. 0.45 V) and faster trr (1.0 ns vs. 5.0 ns), improving weak-signal detection efficiency. However, its 2.2 pF CT is slightly higher than 1N5711's 2.0 pF, potentially affecting tuning in VHF oscillator feedback loops - verify impedance match in final circuit layout.
SD101C-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- DO-204AH, DO-35, Axial
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 40 V
- Current - Average Rectified (Io):
- 15mA
- Voltage - Forward (Vf) (Max) @ If:
- 900 mV @ 15 mA
- Speed:
- Small Signal =< 200mA (Io), Any Speed
- Reverse Recovery Time (trr):
- 1 ns
- Current - Reverse Leakage @ Vr:
- 200 nA @ 30 V
- Capacitance @ Vr, F:
- 2.2pF @ 0V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-35
- Operating Temperature - Junction:
- -65°C ~ 175°C
SD101C-T FAQ
1.How can I place an order for SD101C-T through Aetrix?
Please submit a Request for Quotation (RFQ) for SD101C-T 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 SD101C-T reliable?
The price and inventory of SD101C-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SD101C-T is usually 5 days.
3.What payment methods are accepted for SD101C-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SD101C-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SD101C-T?
SD101C-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SD101C-T 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 SD101C-T?
For technical support, including SD101C-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SD101C-T requirements.
6.How does Aetrix verify that SD101C-T is sourced from the original manufacturer or authorized distributors?
All SD101C-T 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 SD101C-T meets industry standards.
7.What is the process for return or replacement of SD101C-T?
All SD101C-T units undergo pre-shipment inspection (PSI). If there is an issue with SD101C-T, 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 SD101C-T part is unused and in its original packaging.
Return procedure for SD101C-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SD101C-T Tags
-
1N4448X-TP
Micro Commercial Co
-
1N4148WX-TP
Micro Commercial Co
-
1N4148TR
onsemi
-
MMSD4148T1G
onsemi
-
MMBD914LT3G
onsemi
-
BAS16HT1G
onsemi
-
1N914BWT
onsemi
-
BAS21LT1G
onsemi
-
LL4148
onsemi
-
BAS16LT1G
onsemi
-
MMSD914T1G
onsemi
-
BAV21W-7-F
Diodes Incorporated
Tech Hub
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…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
LDO regulator guide covering low dropout voltage, power dissipation, thermal design, PSRR, output noise, capacitor stability, adjustable LDO circuits, LDO vs buck converter and datasheet selection chec…
Conditional Access Module guide covering CAM meaning, CI/CI+ interface, smart card authorization, DVB security workflow, TV and set-top box compatibility, internal electronics, ESD protection, connecto…
Guide to electronic component obsolescence covering EOL risk, PCN/PDN notices, last-time buy planning, replacement options, form-fit-function validation, counterfeit risk and BOM lifecycle management.
18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…
Hall effect sensor guide covering working principle, linear and digital sensors, Arduino circuits, current sensing, speed detection, automotive applications, A3144 examples, signal filtering and datash…
Product Change Notification guide for electronic components, covering PCN meaning, PCN vs PDN/EOL, common change types, risk levels, form-fit-function review, engineering validation, BOM control, LTB/L…
A practical guide to blend door actuators, covering HVAC function, symptoms, location, AC and heater issues, reset and calibration, replacement cost, electrical diagnosis, compatibility checks, and rep…
