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Renesas RD2.0M-T2B-A
- Part No.:
- RD2.0M-T2B-A
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
RD2.0M-T2B-A.pdf
- Description:
- RD2.0M-T2B-A - ZENER DIODES 200
- Quantity:
- Payment:
- Shipping:
Inventory:12,000
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Product details
Overview
RD2.0M-T2B-A from Renesas Electronics is a 2.0 V, ±5% tolerance, 200 mW planar zener diode in SC-59 (JEITA) 3-pin mini-mold package, optimized for precision voltage reference and low-power surge suppression in signal conditioning and power rail stabilization circuits.
For engineers reviewing the RD2.0M-T2B-A datasheet, RD2.0M-T2B-A pinout, RD2.0M-T2B-A application, or RD2.0M-T2B-A equivalent, this device serves as a stable, low-noise shunt regulator with 100 Ω dynamic impedance at 5 mA, suitable for constant-voltage biasing, waveform clipping, and transient overvoltage protection in consumer and industrial electronics.
Technical Context
The RD2.0M-T2B-A operates as a silicon planar zener diode with a nominal breakdown voltage of 2.0 V, conforming to E24 standard voltage grading. Its zener mechanism provides predictable reverse-biased conduction with tight VZ tolerance (±5%) and low temperature coefficient (−0.06 %/°C typical).
Designed for DC and low-frequency regulation, it supports continuous forward current up to 100 mA and withstands peak reverse surge power of 100 W for 10 μs pulses. Junction temperature is rated to 150°C, enabling reliable operation in ambient temperatures from −55°C to +150°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 1.90–2.20 V at IZ = 5 mA - defines precise clamping threshold for low-voltage reference circuits |
| Dynamic Impedance (ZZ) | 100 Ω max at IZ = 5 mA - ensures minimal voltage shift under load variation |
| Power Dissipation (P) | 200 mW at TA = 25°C - sets thermal design limit for PCB trace width and copper area |
| Reverse Current (IR) | 120 μA max at VR = 0.5 V - guarantees low leakage in standby or high-impedance bias networks |
| Junction Temperature (Tj) | 150°C maximum - determines derating curve for operation above 25°C ambient |
| Package | SC-59 (JEITA) 3-pin mini-mold - surface-mount compatible with standard reflow profiles and automated placement |
| Peak Reverse Power (PRSM) | 100 W for tT = 10 μs - enables robust transient suppression against ESD and switching spikes |
Pinout & Package
RD2.0M-T2B-A uses the SC-59 (JEITA) 3-pin mini-mold package: compact 2.9 mm × 2.8 mm footprint with 0.95 mm lead pitch and gull-wing leads. Pin 1 is NC (no connection), Pin 2 is anode (A), Pin 3 is cathode (K). The marking "A" on top identifies orientation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | No Connection (NC) | Electrically isolated; must not be soldered to PCB traces or planes |
| Pin 2 | Anode (A) | Forward-biased terminal; connects to lower-potential node in zener regulation configuration |
| Pin 3 | Cathode (K) | Zener breakdown terminal; connects to higher-potential node and load return path |
Key Features
| Feature | Design Value |
|---|---|
| Planar process construction | Ensures consistent VZ distribution and long-term stability across production lots |
| E24-standard zener voltage | Enables interoperability with industry-standard resistor and capacitor value series in feedback networks |
| Low temperature coefficient | −0.06 %/°C typical minimizes drift in battery-powered or unregulated supply applications |
| 200 mW power rating | Supports direct replacement of legacy 1/4 W through-hole zeners without board redesign |
| SC-59 package compatibility | Matches JEDEC TO-236AB footprint for drop-in use in space-constrained SMT layouts |
Applications
| Reference Voltage Source | ESD Protection Node |
|---|---|
|
Use Scenario: Providing stable bias voltage for op-amp input stages or ADC reference dividers in portable instrumentation. IC Role / Device Role / Timing Role: Shunt voltage reference regulating VREF at 2.0 V with <±5% accuracy and <100 Ω output impedance. Use Value: Eliminates need for external precision voltage references, reducing BOM count and layout area in low-cost sensor interfaces. |
Use Scenario: Clamping I/O line transients on microcontroller GPIO pins exposed to user-accessible connectors. IC Role / Device Role / Timing Role: Low-capacitance (<2 pF) bidirectional clamp limiting voltage excursions to ±0.5 V beyond VDD/GND rails. Use Value: Absorbs 100 W surges per IEC 61000-4-2 Level 4 without latch-up, preserving system-level ESD immunity certification. |
| Waveform Clipper | Current Sink Regulator |
|
Use Scenario: Limiting audio signal amplitude in analog front-end stages to prevent amplifier saturation. IC Role / Device Role / Timing Role: Bidirectional clipping element conducting only when |VIN| > 2.0 V, leveraging symmetric forward/zener knee behavior. Use Value: Delivers clean 2.0 V peak-to-peak clipping with <10 ns response time, avoiding distortion from active circuitry. |
Use Scenario: Setting fixed LED drive current in indicator circuits using constant-current sink topology. IC Role / Device Role / Timing Role: Zener-controlled emitter-base voltage drop in PNP transistor current mirror configuration. Use Value: Achieves ±5% current regulation over 0–70°C ambient without trimming resistors or feedback ICs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX55C2V0 (ON Semiconductor) | Same 2.0 V nominal VZ, but ±5% tolerance and 500 mW rating in DO-35 package | Larger thermal mass suits higher average power; axial lead form requires through-hole assembly | Select when board space allows DO-35 and higher steady-state dissipation is needed |
| MMSZ4678 (Diodes Inc.) | 2.0 V VZ, ±5%, 300 mW in SOD-123; 60 Ω ZZ at 5 mA vs. 100 Ω for RD2.0M-T2B-A | Lower dynamic impedance improves regulation in fast-transient environments; smaller footprint than SC-59 | Prefer for high-speed signal clamping where tighter VZ stability under dynamic load is critical |
Compared with BZX55C2V0 and MMSZ4678, RD2.0M-T2B-A offers JEDEC-standard SC-59 packaging for automated SMT placement, balanced trade-offs between thermal performance and board density, and proven reliability in Renesas' 200 mW planar zener family used across decades of industrial designs.
Availability
RD2.0M-T2B-A is available at Aetrix Electronics and suitable for constant-voltage reference, waveform clipping, and surge absorption applications requiring stable component supply, long-lifecycle support, and RoHS-compliant sourcing.
Supply support for RD2.0M-T2B-A 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
Renesas Electronics Corporation is a global semiconductor leader specializing in microcontrollers, analog, power, and timing solutions for automotive, industrial, and IoT systems.
The RD2.0M-T2B-A belongs to Renesas' legacy planar zener diode family designed for cost-sensitive, high-reliability voltage regulation in consumer and industrial electronics - emphasizing consistency, manufacturability, and long-term availability.
FAQ
What is the zener voltage tolerance for RD2.0M-T2B-A?
The RD2.0M-T2B-A has a zener voltage range of 1.90 V to 2.20 V at IZ = 5 mA, corresponding to a ±5% tolerance around the nominal 2.0 V rating. This tolerance is guaranteed per the B-class specification in the official Renesas datasheet D14716EJ7V0DS, and applies across the full operating temperature range of −55°C to +150°C.
Can RD2.0M-T2B-A be used in place of a 1N4728A?
No - RD2.0M-T2B-A is not a functional substitute for 1N4728A. While both are 3.3 V zener diodes, RD2.0M-T2B-A is specifically rated at 2.0 V. The 1N4728A has a nominal VZ of 3.3 V and 1 W power rating in DO-41 package. RD2.0M-T2B-A's 2.0 V rating, 200 mW dissipation, and SC-59 package make it incompatible for direct replacement in 3.3 V circuits.
What is the maximum reverse surge capability of RD2.0M-T2B-A?
RD2.0M-T2B-A supports a peak reverse surge power (PRSM) of 100 W for pulse width tT = 10 μs at TA = 25°C. This rating is defined in the "Maximum Ratings" table of the Renesas datasheet and reflects its suitability for absorbing short-duration transients such as ESD events or inductive switch-off spikes without degradation.
Is RD2.0M-T2B-A RoHS compliant?
Yes - RD2.0M-T2B-A meets EU RoHS Directive requirements. Renesas Electronics confirms environmental compliance for this product family in accordance with applicable regulations, including restriction of lead, mercury, cadmium, hexavalent chromium, PBB, and PBDE. Full material declarations are available upon request from Renesas sales offices.
What does the "T2B-A" suffix indicate in RD2.0M-T2B-A?
The "T2B-A" suffix denotes tape-and-reel packaging (T2), JEITA-standard SC-59 package variant (B), and Renesas internal revision/traceability code (A). It does not affect electrical specifications - all RD2.0M-T2B-A units share identical zener voltage, impedance, and thermal characteristics as defined in the RD2.0M series datasheet D14716EJ7V0DS.
RD2.0M-T2B-A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Voltage - Zener (Nom) (Vz):
- -
- Tolerance:
- -
- Power - Max:
- -
- Impedance (Max) (Zzt):
- -
- Current - Reverse Leakage @ Vr:
- -
- Voltage - Forward (Vf) (Max) @ If:
- -
- Operating Temperature:
- 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-59
RD2.0M-T2B-A FAQ
1.How can I place an order for RD2.0M-T2B-A through Aetrix?
Please submit a Request for Quotation (RFQ) for RD2.0M-T2B-A 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 RD2.0M-T2B-A reliable?
The price and inventory of RD2.0M-T2B-A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for RD2.0M-T2B-A is usually 5 days.
3.What payment methods are accepted for RD2.0M-T2B-A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for RD2.0M-T2B-A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for RD2.0M-T2B-A?
RD2.0M-T2B-A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your RD2.0M-T2B-A 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 RD2.0M-T2B-A?
For technical support, including RD2.0M-T2B-A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your RD2.0M-T2B-A requirements.
6.How does Aetrix verify that RD2.0M-T2B-A is sourced from the original manufacturer or authorized distributors?
All RD2.0M-T2B-A 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 RD2.0M-T2B-A meets industry standards.
7.What is the process for return or replacement of RD2.0M-T2B-A?
All RD2.0M-T2B-A units undergo pre-shipment inspection (PSI). If there is an issue with RD2.0M-T2B-A, 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 RD2.0M-T2B-A part is unused and in its original packaging.
Return procedure for RD2.0M-T2B-A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
RD2.0M-T2B-A Tags
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