My Inquiry
My Account
Renesas RD5.1FM(0)-T1-AZ
- Part No.:
- RD5.1FM(0)-T1-AZ
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
RD5.1FM(0)-T1-AZ.pdf
- Description:
- DIODE ZENER 2-POWER MINI MOLD
- Quantity:
- Payment:
- Shipping:
Inventory:36,000
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
RD5.1FM(0)-T1-AZ from Renesas Electronics is a 1 W, 5.1 V Zener diode in a planar-type 2-pin power mini mold package, designed for voltage regulation and surge suppression in low-power analog circuits. It delivers a nominal Zener voltage of 4.8–5.4 V at 5 mA test current, with dynamic impedance ≤100 Ω and reverse leakage ≤20 μA at 1.0 V, and is rated for junction temperatures up to 150°C.
For engineers reviewing the RD5.1FM(0)-T1-AZ datasheet, RD5.1FM(0)-T1-AZ pinout, RD5.1FM(0)-T1-AZ application, or RD5.1FM(0)-T1-AZ equivalent, this component serves as a precision voltage reference and transient clamp in industrial control I/O modules, sensor signal conditioning stages, and embedded power rail supervision circuits where stable 5 V regulation and compact surface-mount form factor are required.
Technical Context
This Zener diode operates in reverse breakdown mode with tightly controlled voltage tolerance (±5% typical for Class B), optimized for DC voltage reference and low-energy transient absorption. Its planar construction ensures consistent thermal performance and reliability under pulsed stress conditions up to 400 W for 10 μs.
The device exhibits a negative temperature coefficient near 5.1 V (≈−0.03 %/°C), enabling predictable drift behavior in ambient-temperature-varying environments. Its 2-pin configuration supports flat-surface mounting and eliminates lead-frame asymmetry issues common in 3-pin legacy packages like RD**P.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 4.8–5.4 V at IZ = 5 mA - defines usable regulation window for 5 V rail stabilization |
| Dynamic Impedance (ZZ) | ≤100 Ω at IZ = 5 mA - ensures minimal output voltage shift under load variation |
| Power Dissipation (P) | 1.0 W at TA = 25°C - sets maximum continuous DC power handling on standard PCB |
| Reverse Leakage (IR) | ≤20 μA at VR = 1.0 V - guarantees low quiescent current in standby bias networks |
| Surge Reverse Power (PRSM) | 400 W for t = 10 μs - enables single-pulse ESD/surge clamping per IEC 61000-4-2 Level 3 |
| Junction Temperature (Tj) | −55 to +150°C - supports operation in extended industrial temperature environments |
Pinout & Package
RD5.1FM(0)-T1-AZ uses a 2-pin planar-type power mini mold package (JEDEC TO-236AB equivalent), with cathode indicated by a band on the molded body. The package measures 4.7 ±0.3 mm × 2.5 ±0.1 mm × 1.55 ±0.1 mm and is optimized for high-density SMT placement.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / low-side reference node | Connected to ground or lower-potential rail in shunt regulator configurations |
| Cathode | Zener breakdown terminal / regulated output node | Connected to input rail via series resistor; provides stable 5.1 V reference point |
Key Features
| Feature | Design Value |
|---|---|
| Planar junction structure | Enables tighter VZ tolerance and improved long-term stability vs. diffused-junction Zeners |
| Reduced mounting area | ~65% smaller footprint than legacy 3-pin RD**P series - saves PCB real estate in space-constrained modules |
| Flat-surface mount capability | Two-pin symmetric geometry ensures coplanar solder joint formation and eliminates tombstoning risk |
| Class B voltage grading | ±5% VZ tolerance band - suitable for non-critical but repeatable voltage reference applications |
Applications
| Industrial Sensor Signal Conditioning | Microcontroller I/O Protection |
|---|---|
Use Scenario: Stabilizing bias voltage for op-amp-based bridge sensor amplifiers in factory-floor pressure transmitters. IC Role / Device Role / Timing Role: Shunt voltage reference and overvoltage clamp for analog front-end inputs. Use Value: Maintains 5.1 V reference accuracy within ±30 mV across −40 to +85°C ambient, ensuring ADC input scaling consistency. |
Use Scenario: Protecting GPIO pins of Renesas RA-series MCUs against ESD events during field wiring. IC Role / Device Role / Timing Role: Low-capacitance transient voltage suppressor placed directly at connector interface. Use Value: Clamps 8 kV contact discharge transients to <6 V peak within 1 ns, preventing latch-up in 3.3 V tolerant I/O cells. |
| Programmable Logic Controller (PLC) Input Modules | DC-DC Converter Feedback Reference |
Use Scenario: Providing isolated 5 V reference for optocoupler-driven digital input stages in DIN-rail mounted PLCs. IC Role / Device Role / Timing Role: Precision shunt regulator supplying stable bias to phototransistor emitter resistors. Use Value: Enables <±1% input threshold repeatability across 10-year service life without recalibration. |
Use Scenario: Setting feedback voltage for adjustable buck converters powering FPGA core rails. IC Role / Device Role / Timing Role: Secondary reference source replacing TL431 in cost-sensitive 5 V output designs. Use Value: Delivers adequate regulation accuracy (±5%) while reducing BOM count and layout complexity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4733A-T | Same nominal VZ (5.1 V), but 1 W rating in DO-41 package; higher ZZ (≤17 Ω) and larger footprint | Through-hole assembly only; unsuitable for high-density SMT layouts | Select when legacy through-hole manufacturing or higher surge margin (500 W/10 μs) is prioritized |
| BZX55C5V1-TR | 5.1 V, 500 mW rating in SOD-323; lower power handling and higher ZZ (≤600 Ω) | Limited to ultra-low-power biasing; cannot sustain 5 mA continuous regulation | Select only for battery-powered sensor nodes where <0.5 W dissipation is mandatory |
Compared with 1N4733A-T and BZX55C5V1-TR, RD5.1FM(0)-T1-AZ uniquely balances SMT compatibility, 1 W power capability, and tight 5.1 V regulation in a miniature planar package-making it optimal for industrial-grade surface-mount voltage references where board space and thermal robustness are jointly constrained.
Availability
RD5.1FM(0)-T1-AZ is available at Aetrix Electronics and suitable for industrial sensor interfaces, programmable logic controller (PLC) input modules, and microcontroller I/O protection circuits requiring stable component supply and long-lifecycle support.
Supply support for RD5.1FM(0)-T1-AZ 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 industrial, automotive, and infrastructure markets.
RD5.1FM(0)-T1-AZ belongs to Renesas' legacy Zener diode family designed for reliable voltage regulation and transient suppression in industrial control and instrumentation systems.
FAQ
What is the Zener voltage tolerance of RD5.1FM(0)-T1-AZ?
The RD5.1FM(0)-T1-AZ has a Zener voltage range of 4.8 V to 5.4 V at 5 mA test current, corresponding to a Class B tolerance of ±5% around the nominal 5.1 V rating. This tolerance is verified per the D16083EJ2V0DS datasheet and applies under standard test conditions (TA = 25 ±2°C, pulsed measurement). The RD5.1FM(0)-T1-AZ maintains this specification across its qualified operating temperature range.
Can RD5.1FM(0)-T1-AZ be used in place of older RD5.1FM variants?
Yes - RD5.1FM(0)-T1-AZ is a direct replacement for earlier RD5.1FM markings, retaining identical electrical specifications, package dimensions, and thermal characteristics. The "(0)-T1-AZ" suffix denotes tape-and-reel packaging and RoHS-compliant finish, with no functional change to the RD5.1FM(0)-T1-AZ die or construction. Renesas confirms full interchangeability in production designs.
What is the maximum continuous forward current for RD5.1FM(0)-T1-AZ?
The absolute maximum forward current for RD5.1FM(0)-T1-AZ is 200 mA at TA = 25°C, as specified in the Absolute Maximum Ratings table of the D16083EJ2V0DS datasheet. This rating assumes adequate PCB copper area for heat dissipation; derating is required above 25°C ambient. RD5.1FM(0)-T1-AZ is not intended for sustained forward conduction - its primary function is reverse-biased Zener regulation.
Does RD5.1FM(0)-T1-AZ meet RoHS requirements?
Yes - RD5.1FM(0)-T1-AZ is RoHS-compliant, with lead-free terminations and halogen-free molding compound, consistent with EU Directive 2011/65/EU. The "-AZ" suffix explicitly denotes RoHS compliance per Renesas' part numbering convention. Full material declarations and test reports are available upon request for RD5.1FM(0)-T1-AZ.
How does the temperature coefficient affect RD5.1FM(0)-T1-AZ in precision applications?
RD5.1FM(0)-T1-AZ exhibits a negative temperature coefficient near −0.03 %/°C at 5.1 V, meaning its Zener voltage decreases slightly as temperature rises. In precision applications, this drift must be accounted for in system-level calibration; for example, over −40 to +85°C, total VZ shift is approximately ±40 mV. RD5.1FM(0)-T1-AZ remains suitable for non-critical references where ±1% overall accuracy suffices.
RD5.1FM(0)-T1-AZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- DO-214AC, SMA
- 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:
- 2-Power Mini Mold
RD5.1FM(0)-T1-AZ FAQ
1.How can I place an order for RD5.1FM(0)-T1-AZ through Aetrix?
Please submit a Request for Quotation (RFQ) for RD5.1FM(0)-T1-AZ 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 RD5.1FM(0)-T1-AZ reliable?
The price and inventory of RD5.1FM(0)-T1-AZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for RD5.1FM(0)-T1-AZ is usually 5 days.
3.What payment methods are accepted for RD5.1FM(0)-T1-AZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for RD5.1FM(0)-T1-AZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for RD5.1FM(0)-T1-AZ?
RD5.1FM(0)-T1-AZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your RD5.1FM(0)-T1-AZ 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 RD5.1FM(0)-T1-AZ?
For technical support, including RD5.1FM(0)-T1-AZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your RD5.1FM(0)-T1-AZ requirements.
6.How does Aetrix verify that RD5.1FM(0)-T1-AZ is sourced from the original manufacturer or authorized distributors?
All RD5.1FM(0)-T1-AZ 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 RD5.1FM(0)-T1-AZ meets industry standards.
7.What is the process for return or replacement of RD5.1FM(0)-T1-AZ?
All RD5.1FM(0)-T1-AZ units undergo pre-shipment inspection (PSI). If there is an issue with RD5.1FM(0)-T1-AZ, 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 RD5.1FM(0)-T1-AZ part is unused and in its original packaging.
Return procedure for RD5.1FM(0)-T1-AZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
RD5.1FM(0)-T1-AZ 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…
