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Renesas RD5.1JS-T1
- Part No.:
- RD5.1JS-T1
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
RD5.1JS-T1.pdf
- Description:
- DIODE ZENER
- Quantity:
- Payment:
- Shipping:
Inventory:13,000
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Product details
Overview
RD5.1JS-T1 from Renesas Electronics is a 400 mW, DO-34 glass-sealed Zener diode with nominal zener voltage 5.1 V (±4.9% tolerance at 5 mA), low dynamic impedance (Zz = 80 Ω max), and sharp breakdown characteristic for precision voltage regulation in low-noise analog circuits. It operates within –65 °C to +175 °C storage range and supports surge reverse power up to 2.4 W (10 µs pulse).
For engineers reviewing the RD5.1JS-T1 datasheet, RD5.1JS-T1 pinout, RD5.1JS-T1 application, or RD5.1JS-T1 equivalent, this device is selected for stable reference generation in power supply feedback loops, overvoltage clamping in sensor interfaces, and waveform shaping in signal conditioning stages where low knee impedance and tight Vz tolerance are critical.
Technical Context
The RD5.1JS-T1 employs Double Heatsink Diode (DHD) construction in a miniature DO-34 package (2.4 mm max body length), enabling efficient thermal dissipation despite its 400 mW rating. Its sharp breakdown and low noise performance stem from optimized junction design and glass-sealed hermetic packaging.
Electrical behavior is characterized by a 5.1 V nominal zener voltage measured at 5 mA test current, with dynamic impedance specified at ≤80 Ω and knee impedance ≤500 Ω - ensuring minimal regulation deviation under varying load conditions. Temperature coefficient is not explicitly listed for RD5.1JS-T1 but falls within the typical ±0.02 %/°C range observed for 5–6 V Zeners in this series.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (Vz) | 4.84–5.37 V at Iz = 5 mA - defines stable regulation point for feedback or clamp circuits |
| Power Dissipation (P) | 400 mW at TA = 25 °C - sets maximum continuous DC power handling without derating |
| Dynamic Impedance (Zz) | ≤80 Ω at Iz = 5 mA - ensures minimal output voltage shift under load transients |
| Knee Impedance (Zzk) | ≤500 Ω - maintains regulation integrity even near knee region (low-current operation) |
| Reverse Current (IR) | ≤1.5 µA at VR = 1.5 V - guarantees low leakage in high-impedance bias/reference nodes |
| Surge Reverse Power (PRSM) | 2.4 W (t = 10 µs) - supports transient overvoltage suppression without failure |
| Junction Temperature (Tj) | 175 °C - enables operation in thermally demanding industrial environments |
Pinout & Package
RD5.1JS-T1 uses a DO-34 axial-leaded glass package with cathode indicated by a blue band. The device has two terminals: anode and cathode - no internal complexity or multi-pin configuration.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Reference ground node | Connected to circuit ground or lower-potential rail in reverse-biased Zener operation |
| Cathode | Zener breakdown terminal / Voltage reference output | Marked with blue band; supplies regulated voltage when reverse biased above Vz |
Key Features
| Feature | Design Value |
|---|---|
| DO-34 glass seal | Hermetic encapsulation ensures long-term stability and moisture resistance in humid environments |
| Low noise | Measured en ≤ 50 µV in 10–500 kHz band - suitable for precision references and audio signal paths |
| Sharp breakdown | Steep IV knee (Zzk/Zz ratio ≤6.25) enables clean clamping and minimal hysteresis in protection circuits |
| E24-standard Vz | 5.1 V nominal aligns with IEC 60063 E24 series - simplifies BOM standardization and inventory management |
Applications
| Power Supply Feedback Regulation | Sensor Signal Clamping |
|---|---|
|
Use Scenario: Stabilizing output voltage in linear regulator feedback networks or switching converter error amplifiers. IC Role / Device Role / Timing Role: Provides precise, low-drift reference voltage to comparator or op-amp input. Use Value: Tight 4.84–5.37 V tolerance and ≤80 Ω Zz minimize output variation across line/load/temperature. |
Use Scenario: Limiting analog sensor output swing (e.g., thermistor bridge, pressure transducer) before ADC input. IC Role / Device Role / Timing Role: Acts as bidirectional clamp to protect downstream circuitry from overvoltage transients. Use Value: 2.4 W surge rating and sharp knee enable reliable transient suppression without latch-up or degradation. |
| Waveform Shaping Circuit | Reference Voltage Source |
|
Use Scenario: Generating symmetrical clipping levels in audio preamplifier or function generator output stages. IC Role / Device Role / Timing Role: Dual-Zener configuration (back-to-back) forms precision limiter with matched thresholds. Use Value: Low noise (<50 µV) and consistent Vz matching across AB1/AB2/AB3 variants ensure harmonic purity. |
Use Scenario: Establishing stable bias points for op-amps, comparators, or analog switches in battery-powered instrumentation. IC Role / Device Role / Timing Role: Serves as low-power, passive voltage reference independent of supply rail fluctuations. Use Value: 1.5 µA max IR at 1.5 V enables use in nanoampere-bias circuits without loading error. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4733A | 5.1 V nominal, 1 W rating, DO-41 package, Zz = 17 Ω max - higher power, larger footprint | Preferred in higher-current regulation (>100 mA) or PCBs with relaxed space constraints | Select when thermal margin >400 mW is required; not drop-in due to DO-41 vs. DO-34 mechanical mismatch |
| BZX55-C5V1 | 5.1 V nominal, 500 mW rating, DO-35 package, Zz = 60 Ω max - tighter Vz tolerance (±5%), same glass seal | Better suited for metrology-grade references where ±5% Vz spread is acceptable but lower Zz is critical | Choose for improved impedance performance; requires layout adjustment for DO-35 lead spacing |
Compared with RD5.1JS-T1, the 1N4733A offers greater power headroom but demands more board area, while the BZX55-C5V1 delivers lower dynamic impedance at the cost of non-identical thermal resistance and slightly different surge capability - both require mechanical redesign but provide functional alternatives in voltage reference and clamping roles.
Availability
RD5.1JS-T1 is available at Aetrix Electronics and suitable for power supply feedback regulation, sensor signal clamping, and waveform shaping circuits requiring stable component supply with consistent Zener voltage and low-noise performance.
Supply support for RD5.1JS-T1 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 manufacturer headquartered in Japan, specializing in microcontrollers, analog and power devices, and system-on-chip solutions for industrial, automotive, and consumer markets.
The RD5.1JS-T1 belongs to Renesas' legacy Zener diode family designed for general-purpose voltage regulation and protection in Standard-grade applications including office equipment, test instruments, and industrial control systems.
FAQ
What is the exact zener voltage range for RD5.1JS-T1 at 5 mA test current?
The RD5.1JS-T1 exhibits a zener voltage range of 4.84 V to 5.37 V when tested at Iz = 5 mA, per the AB suffix variant specification in Renesas datasheet D13937EJ5V0DS00. This 10.9% total spread reflects E24-series tolerance and is confirmed across AB1 (4.84–5.04 V), AB2 (4.98–5.20 V), and AB3 (5.14–5.37 V) subtypes. RD5.1JS-T1 must be selected with appropriate suffix for target regulation accuracy.
Does RD5.1JS-T1 support surge protection, and what is its rated pulse capability?
Yes, RD5.1JS-T1 is rated for non-repetitive surge reverse power of 2.4 W at pulse width t = 10 µs, as defined in Figure 9 of the official datasheet. This capability allows it to absorb transient overvoltages - such as ESD or inductive kickback - without permanent degradation, provided average power remains within 400 mW limits and thermal design accounts for junction temperature rise.
What is the maximum reverse leakage current for RD5.1JS-T1, and at what voltage is it specified?
RD5.1JS-T1 specifies a maximum reverse current (IR) of 1.5 µA at VR = 1.5 V, measured at TA = 25 °C. This low leakage ensures minimal error in high-impedance reference nodes and makes RD5.1JS-T1 suitable for battery-critical designs where standby current must remain below nanoampere thresholds.
Is RD5.1JS-T1 RoHS compliant, and what is its quality grade classification?
RD5.1JS-T1 meets RoHS Directive requirements as confirmed by Renesas Electronics' environmental compliance documentation. Its quality grade is "Standard", per Renesas' three-tier classification system - meaning it is qualified for use in computers, office equipment, communications gear, test instruments, and industrial robots, but not for automotive safety, medical life-support, or aerospace applications without explicit written consent.
How does the DO-34 package of RD5.1JS-T1 affect thermal performance compared to DO-41?
The DO-34 package of RD5.1JS-T1 features a shorter body (2.4 mm max) and finer leads than DO-41, resulting in higher thermal resistance - approximately 375 °C/W (junction-to-ambient, free-air) per Figure 10. This necessitates careful PCB copper area design (e.g., ≥5 mm² pad) to maintain safe junction temperatures under 400 mW operation, unlike DO-41 parts which typically achieve ~200 °C/W with equivalent layout.
RD5.1JS-T1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- *
- Package/Case:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- -
- Tolerance:
- -
- Power - Max:
- -
- Impedance (Max) (Zzt):
- -
- Current - Reverse Leakage @ Vr:
- -
- Voltage - Forward (Vf) (Max) @ If:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
RD5.1JS-T1 FAQ
1.How can I place an order for RD5.1JS-T1 through Aetrix?
Please submit a Request for Quotation (RFQ) for RD5.1JS-T1 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 RD5.1JS-T1 reliable?
The price and inventory of RD5.1JS-T1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for RD5.1JS-T1 is usually 5 days.
3.What payment methods are accepted for RD5.1JS-T1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for RD5.1JS-T1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for RD5.1JS-T1?
RD5.1JS-T1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your RD5.1JS-T1 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 RD5.1JS-T1?
For technical support, including RD5.1JS-T1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your RD5.1JS-T1 requirements.
6.How does Aetrix verify that RD5.1JS-T1 is sourced from the original manufacturer or authorized distributors?
All RD5.1JS-T1 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 RD5.1JS-T1 meets industry standards.
7.What is the process for return or replacement of RD5.1JS-T1?
All RD5.1JS-T1 units undergo pre-shipment inspection (PSI). If there is an issue with RD5.1JS-T1, 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 RD5.1JS-T1 part is unused and in its original packaging.
Return procedure for RD5.1JS-T1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
RD5.1JS-T1 Tags
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