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Diodes Incorporated ZMS2800TC
- Part No.:
- ZMS2800TC
- Manufacturer:
- Diodes Incorporated
- Category:
- RF Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
ZMS2800TC.pdf
- Description:
- DIODE SCHOTTKY 70V 250MW SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:9,464
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Product details
Overview
ZMS2800TC from Zetex Semiconductors (now Diodes Incorporated) is a Schottky barrier diode in SOD323 package, designed for high-frequency signal routing in RF front-ends. It features 70 V reverse breakdown voltage, 410 mV forward voltage at 1 mA, 100 ps effective minority lifetime, 1.2 pF junction capacitance at 0 V, and 1 A peak forward current capability - enabling use in microwave mixer and detector stages.
For engineers reviewing the ZMS2800TC datasheet, ZMS2800TC pinout, ZMS2800TC application, or ZMS2800TC equivalent, key selection criteria include verified low VF stability across temperature, sub-100 ps switching performance, VR ≥ 70 V for RF bias isolation, and SOD323 footprint compatibility with high-density RF layouts.
Technical Context
This Schottky diode uses a platinum-silicide (PtSi) barrier structure optimized for low series resistance and minimal charge storage. Its 100 ps minority carrier lifetime enables operation up to 54 MHz under pulsed conditions, while the 1.2 pF zero-bias capacitance supports impedance matching in 50 Ω RF paths.
The device operates over –55 °C to +150 °C with thermal derating of power dissipation above 25 °C ambient. Reverse leakage remains ≤200 nA at 50 V and 25 °C, ensuring stable DC blocking in detector bias networks without signal distortion.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Breakdown Voltage (VBR) | 70 V at IR = 10 µA - ensures reliable reverse blocking in 48 V RF bias rails and mixer LO injection circuits |
| Forward Voltage (VF) | 410 mV at IF = 1 mA - minimizes insertion loss and local oscillator feedthrough in passive mixers |
| Junction Capacitance (CT) | 1.2 pF at VR = 0 V, f = 1 MHz - matches standard 50 Ω microstrip layouts without added tuning stubs |
| Effective Minority Lifetime (τ) | 100 ps at f = 54 MHz, Ipk = 20 mA - enables clean switching response in pulse-modulated detector applications |
| Reverse Leakage (IR) | 200 nA at VR = 50 V, Tamb = 25 °C - maintains low DC offset drift in precision envelope detection |
| Package | SOD323 - 1.7 mm × 1.25 mm footprint with gull-wing leads, compatible with reflow soldering and automated placement |
Pinout & Package
SOD323 surface-mount package with two terminals: anode and cathode, marked by cathode band on top surface. Standard JEDEC MO-203AA outline, 0.95 mm nominal lead pitch, 0.55 mm max height.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Positive terminal for forward conduction | Connected to RF input or LO source in mixer configurations; requires low-inductance trace routing |
| Cathode | Negative terminal; marked by band | Grounded or biased node in detector circuits; serves as reference for RF output coupling |
Key Features
| Feature | Design Value |
|---|---|
| Low forward voltage | 410 mV @ 1 mA enables >15 dBm LO drive efficiency in passive double-balanced mixers |
| Pico-second switching speed | 100 ps τ supports clean demodulation of 54 MHz IF signals without phase distortion |
| High reverse breakdown | 70 V VBR allows direct integration into 48 V telecom bias networks without external clamping |
| Miniature SOD323 footprint | 1.7 × 1.25 mm body enables dense RF layout in compact transceiver modules |
Applications
| Microwave Mixer | RF Detector |
|---|---|
Use Scenario: Used in double-balanced mixer core for 900 MHz GSM receiver front-end. IC Role / Device Role / Timing Role: Passive switching element modulating RF/LO signals; no timing function. Use Value: 410 mV VF reduces conversion loss to < 7.5 dB; 1.2 pF CT maintains port match across 800–1000 MHz band. | Use Scenario: Envelope detector in 2.4 GHz Wi-Fi RSSI monitoring path. IC Role / Device Role / Timing Role: Signal rectifier converting RF amplitude to DC voltage; no clock or timing role. Use Value: 200 nA IR at 50 V ensures < 0.5 mV baseline drift over temperature; 100 ps τ preserves fast rise-time fidelity. |
| High-Speed Switch | LO Buffer Clamp |
Use Scenario: Fast RF switch in antenna diversity selector for LTE Band 7. IC Role / Device Role / Timing Role: Signal path gate controlled by DC bias; no internal timing logic. Use Value: 70 V VBR withstands transient coupling during antenna switching; SOD323 size fits 3 mm² PCB area budget. | Use Scenario: LO leakage suppression clamp in 5.8 GHz drone video transmitter. IC Role / Device Role / Timing Role: DC bias limiter protecting downstream amplifier input; no timing function. Use Value: Low VF ensures clamping threshold stays below 0.45 V, preventing gain compression in GaAs FET driver stage. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BAT54C | VF = 450 mV @ 10 mA; VBR = 30 V; CT = 10 pF @ 0 V | Lower breakdown limits use to ≤24 V bias; higher CT degrades UHF matching | Preferable only where cost sensitivity outweighs RF performance requirements |
| NSR0230HT1G | VF = 370 mV @ 100 mA; VBR = 30 V; τ = 2 ns | Optimized for power rectification, not RF switching; 2 ns τ causes harmonic distortion above 100 MHz | Not suitable for mixer/detector roles; acceptable only in low-frequency clamp applications |
Compared with BAT54C and NSR0230HT1G, ZMS2800TC uniquely balances 70 V breakdown, sub-0.5 V forward drop, and 100 ps switching for RF signal path integrity - making it irreplaceable in 800 MHz–3 GHz mixer and detector designs requiring low distortion and thermal stability.
Availability
ZMS2800TC is available at Aetrix Electronics and suitable for RF transceiver design, microwave test equipment, and wireless infrastructure hardware requiring stable component supply and consistent high-frequency electrical behavior.
Supply support for ZMS2800TC 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
Zetex Semiconductors, acquired by Diodes Incorporated in 2008, specialized in high-performance discrete semiconductors for analog and RF applications.
ZMS2800TC belongs to the ZMS series of ultra-fast Schottky diodes engineered specifically for microwave mixing, detection, and high-speed switching in communications systems.
FAQ
Is ZMS2800TC suitable for 5 GHz applications?
No. While its 100 ps minority lifetime supports operation up to 54 MHz under pulsed conditions, its 1.2 pF junction capacitance and package parasitics limit usable bandwidth to ~3 GHz. For 5 GHz, consider GaAs Schottky diodes like HSMS-285x with sub-0.5 pF CT.
What is the maximum continuous forward current rating?
The absolute maximum continuous forward current is not specified. The datasheet only defines 1 A peak forward current for 1 µs pulses. Continuous operation must be thermally limited to ≤15 mA at 25 °C ambient, based on 250 mW Ptot and typical VF of 0.41 V.
Does ZMS2800TC have a qualified automotive grade variant?
No. ZMS2800TC was released in 1998 for commercial and industrial RF applications. Diodes Incorporated does not list an AEC-Q101 qualified version. For automotive radar detectors, consider the automotive-grade NSR0230MW2T1G with full PPAP documentation.
Can ZMS2800TC replace ZMS2811TC in a circuit?
No. ZMS2811TC has 15 V VBR and 100 nA IR at 10 V, optimized for low-voltage detector applications. Swapping in ZMS2800TC (70 V VBR, 200 nA IR at 50 V) risks excessive leakage in low-bias circuits and may alter impedance matching due to different CT vs. voltage curves.
ZMS2800TC Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SC-76, SOD-323
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Diode Type:
- Schottky - Single
- Voltage - Peak Reverse (Max):
- 70V
- Current - Max:
- 15 mA
- Capacitance @ Vr, F:
- 2pF @ 0V, 1MHz
- Resistance @ If, F:
- -
- Power Dissipation (Max):
- 250 mW
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- SOD-323
ZMS2800TC FAQ
1.How can I place an order for ZMS2800TC through Aetrix?
Please submit a Request for Quotation (RFQ) for ZMS2800TC 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 ZMS2800TC reliable?
The price and inventory of ZMS2800TC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ZMS2800TC is usually 5 days.
3.What payment methods are accepted for ZMS2800TC?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ZMS2800TC transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ZMS2800TC?
ZMS2800TC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ZMS2800TC 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 ZMS2800TC?
For technical support, including ZMS2800TC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ZMS2800TC requirements.
6.How does Aetrix verify that ZMS2800TC is sourced from the original manufacturer or authorized distributors?
All ZMS2800TC 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 ZMS2800TC meets industry standards.
7.What is the process for return or replacement of ZMS2800TC?
All ZMS2800TC units undergo pre-shipment inspection (PSI). If there is an issue with ZMS2800TC, 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 ZMS2800TC part is unused and in its original packaging.
Return procedure for ZMS2800TC:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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