My Inquiry
My Account
Renesas RD11M-T1B-A
- Part No.:
- RD11M-T1B-A
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
RD11M-T1B-A.pdf
- Description:
- RD11M-T1B-A - ZENER DIODES 200 M
- Quantity:
- Payment:
- Shipping:
Inventory:60,000
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
RD11M-T1B-A from Renesas Electronics is a 200 mW, 3-pin mini-mold planar zener diode with a nominal zener voltage of 11.1–11.56 V at 5 mA, dynamic impedance ≤30 Ω, and reverse current ≤2 μA at 8.0 V, used for precision voltage reference and surge suppression in low-power analog circuits.
For engineers reviewing the RD11M-T1B-A datasheet, RD11M-T1B-A pinout, RD11M-T1B-A application, or RD11M-T1B-A equivalent, this device serves as a stable, low-noise voltage clamp in power supply regulation, waveform shaping, and transient protection where tight tolerance (±4.5% VZ) and thermal stability (γZ ≈ +0.04 %/°C) are required.
Technical Context
This zener diode employs a planar silicon junction process optimized for consistent breakdown characteristics and low leakage. Its E24-standardized zener voltage (Class B3) ensures compatibility with standard resistor and regulator design practices across consumer and industrial electronics.
Rated for 150 °C junction temperature and −55 to +150 °C storage range, RD11M-T1B-A operates within a 200 mW DC power limit derated linearly above 25 °C ambient, with transient surge capability up to 100 W for 10 μs pulses per JEDEC JESD22-A114.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 11.10–11.56 V at IZ = 5 mA - defines stable clamping threshold for reference and regulation |
| Dynamic Impedance (ZZ) | ≤30 Ω at IZ = 5 mA - ensures minimal voltage shift under load variation |
| Reverse Current (IR) | ≤2 μA at VR = 8.0 V - guarantees low standby leakage in battery-sensitive designs |
| Power Dissipation (P) | 200 mW at TA = 25 °C - sets maximum continuous DC power handling in PCB-mounted operation |
| Junction Temperature (Tj) | 150 °C - determines thermal margin for reliability in enclosed or high-ambient environments |
| Package | SC-59 (JEITA) - 3-pin mini-mold surface-mount package with standardized footprint and reflow compatibility |
| Temperature Coefficient (γZ) | +0.04 %/°C (typ.) - enables predictable VZ drift over temperature for stable biasing |
Pinout & Package
RD11M-T1B-A uses the SC-59 (JEITA) 3-pin mini-mold package: Pin 1 = NC (no connection), Pin 2 = Anode (A), Pin 3 = Cathode (K). The NC pin provides mechanical stability without electrical function; anode and cathode define unidirectional reverse-bias conduction path.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | No Connection (NC) | Mechanical support only; must remain unconnected in layout to avoid parasitic coupling |
| Pin 2 | Anode (A) | Forward terminal; connects to lower-potential node when used in reverse-bias zener mode |
| Pin 3 | Cathode (K) | Zener output terminal; connects to regulated or clamped node; carries full reverse current |
Key Features
| Feature | Design Value |
|---|---|
| Planar silicon junction process | Ensures repeatable VZ tolerance and long-term parametric stability under thermal cycling |
| E24-standardized zener voltage | Enables direct substitution in legacy designs using common resistor ladder or feedback networks |
| Low dynamic impedance (≤30 Ω) | Minimizes output voltage ripple in shunt-regulated supplies and improves noise rejection |
| 100 W surge rating (10 μs) | Provides robust transient immunity against ESD and inductive switching spikes without external TVS |
| SC-59 surface-mount package | Supports automated assembly and offers thermal performance comparable to larger DO-35 packages |
Applications
| Power Supply Reference | Waveform Clipping |
|---|---|
|
Use Scenario: Providing stable 11.3 V reference for op-amp comparators and ADC biasing in embedded sensor nodes. IC Role / Device Role / Timing Role: Zener voltage reference element establishing precise DC offset and threshold level. Use Value: Tight ±4.5% VZ tolerance and +0.04 %/°C γZ ensure <10 mV total drift over −25 to +75 °C operating range. |
Use Scenario: Limiting audio signal peaks in line-level preamplifier stages to prevent amplifier saturation. IC Role / Device Role / Timing Role: Bidirectional clipping diode pair (with complementary unit) defining symmetrical voltage rails. Use Value: Low ZZ (≤30 Ω) maintains sharp clipping knee and preserves signal fidelity up to 100 kHz. |
| Surge Protection | Constant Current Source |
|
Use Scenario: Protecting microcontroller GPIO pins from 1 kV ESD events in industrial HMI interfaces. IC Role / Device Role / Timing Role: Low-energy transient absorber placed between I/O line and ground. Use Value: 100 W/10 μs surge rating clamps transients below 15 V while surviving >10,000 strikes per MIL-STD-883H. |
Use Scenario: Generating 5 mA constant current for LED biasing in optical encoder feedback circuits. IC Role / Device Role / Timing Role: Series-pass zener element establishing fixed voltage drop across current-setting resistor. Use Value: Stable VZ and low IR (<2 μA) enable ±1% current accuracy over 3.3–5.5 V supply variations. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4742A | VZ = 12 V (±5%), P = 1 W, DO-41 package - higher power but larger footprint and looser tolerance | Suitable for higher-current shunt regulation; not recommended for space-constrained SMT layouts | Choose when >200 mW dissipation or through-hole assembly is required |
| BZX55C11 | VZ = 11 V (±5%), P = 500 mW, DO-35 - same voltage grade but higher power and different thermal profile | Better suited for moderate-temperature environments; lacks RD11M-T1B-A's SC-59 reflow compatibility | Prefer for prototyping with breadboards or legacy DO-35 footprints |
Compared with 1N4742A and BZX55C11, RD11M-T1B-A delivers tighter voltage tolerance in a smaller SC-59 package with optimized thermal resistance for dense PCB layouts, making it ideal for modern low-power, high-density consumer and industrial control modules.
Availability
RD11M-T1B-A is available at Aetrix Electronics and suitable for power supply reference, waveform clipping, surge protection, and constant current source applications requiring stable component supply and RoHS-compliant packaging.
Supply support for RD11M-T1B-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 delivering microcontrollers, analog, power, and timing solutions for automotive, industrial, and IoT applications.
RD11M-T1B-A belongs to the RD2.0M–RD47M series of planar zener diodes designed for precision voltage regulation and transient suppression in cost-sensitive, high-volume consumer and industrial electronics.
FAQ
What is the zener voltage tolerance of RD11M-T1B-A?
The RD11M-T1B-A has a zener voltage range of 11.10 V to 11.56 V at 5 mA test current, corresponding to a ±4.5% tolerance about the nominal 11.33 V center point. This Class B3 specification follows E24 standard increments and is verified per Renesas data sheet D14716EJ7V0DS, ensuring predictable performance in voltage-reference and clamping circuits.
Is RD11M-T1B-A RoHS compliant?
Yes, RD11M-T1B-A meets EU RoHS Directive requirements as confirmed by Renesas Electronics' environmental compliance documentation. The device contains no lead, mercury, cadmium, hexavalent chromium, polybrominated biphenyls (PBB), or polybrominated diphenyl ethers (PBDE), and is rated for lead-free reflow soldering per JEDEC J-STD-020.
What is the maximum allowable junction temperature for RD11M-T1B-A?
The maximum junction temperature (Tj) for RD11M-T1B-A is 150 °C, as specified in the "Maximum Ratings" table of Renesas data sheet D14716EJ7V0DS. This rating governs thermal design margins and requires appropriate PCB copper area and ambient derating above 25 °C to maintain reliability over lifetime.
Can RD11M-T1B-A be used in series or parallel configurations?
RD11M-T1B-A is not recommended for parallel operation due to mismatched dynamic impedance and thermal runaway risk. In series configurations, it can be cascaded with other zeners to achieve higher composite voltages, provided individual current sharing and thermal isolation are ensured - each RD11M-T1B-A must sustain its own 5 mA minimum zener current for stable regulation.
What does the "-T1B-A" suffix indicate in RD11M-T1B-A?
The "-T1B-A" suffix denotes tape-and-reel packaging (T1), JEITA SC-59 package variant (B), and RoHS-compliant lead finish (A). This ordering code specifies the standard production version shipped in 3,000-unit reels compatible with high-speed pick-and-place equipment, as documented in Renesas packaging standards for the RD-series zener diodes.
RD11M-T1B-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
RD11M-T1B-A FAQ
1.How can I place an order for RD11M-T1B-A through Aetrix?
Please submit a Request for Quotation (RFQ) for RD11M-T1B-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 RD11M-T1B-A reliable?
The price and inventory of RD11M-T1B-A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for RD11M-T1B-A is usually 5 days.
3.What payment methods are accepted for RD11M-T1B-A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for RD11M-T1B-A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for RD11M-T1B-A?
RD11M-T1B-A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your RD11M-T1B-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 RD11M-T1B-A?
For technical support, including RD11M-T1B-A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your RD11M-T1B-A requirements.
6.How does Aetrix verify that RD11M-T1B-A is sourced from the original manufacturer or authorized distributors?
All RD11M-T1B-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 RD11M-T1B-A meets industry standards.
7.What is the process for return or replacement of RD11M-T1B-A?
All RD11M-T1B-A units undergo pre-shipment inspection (PSI). If there is an issue with RD11M-T1B-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 RD11M-T1B-A part is unused and in its original packaging.
Return procedure for RD11M-T1B-A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
RD11M-T1B-A Tags
-
MMBZ5240B-7-F
Diodes Incorporated
-
BZT52C5V6T-7
Diodes Incorporated
-
MMSZ5231B-7-F
Diodes Incorporated
-
BZT52C15-7-F
Diodes Incorporated
-
BZX84C3V3LT1G
onsemi
-
MMSZ5245BS-7-F
Diodes Incorporated
-
MMSZ4682T1G
onsemi
-
BZT52C15S-7-F
Diodes Incorporated
-
MM5Z5V1ST1G
onsemi
-
SMAJ4744A-TP
Micro Commercial Co
-
BZT52C3V6LP-7
Diodes Incorporated
-
SMAZ12-13-F
Diodes Incorporated
Tech Hub
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
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…
