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Renesas RD16JS-AZ
- Part No.:
- RD16JS-AZ
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
RD16JS-AZ.pdf
- Description:
- DIODE ZENER
- Quantity:
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- Shipping:
Inventory:8,900
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Product details
Overview
RD16JS-AZ from Renesas Electronics is a 400 mW, DO-34 glass-sealed Zener diode with nominal zener voltage 16 V (15.37–17.09 V at 5 mA), low dynamic impedance (Zz = 50 Ω max), sharp breakdown characteristic, and low noise - used for precision voltage reference and waveform clipping in analog signal conditioning circuits.
For engineers reviewing the RD16JS-AZ datasheet, RD16JS-AZ pinout, RD16JS-AZ application, or RD16JS-AZ equivalent, this page delivers verified electrical specs, package dimensions, thermal behavior, noise performance, and real-world use context - all aligned to Renesas' D13937EJ5V0DS00 datasheet (5th ed., March 1999).
Technical Context
This device operates as a two-terminal voltage reference with sharp reverse-breakdown knee and low dynamic impedance (Zz ≤ 50 Ω at Iz = 5 mA), enabling stable regulation under varying load conditions. Its DO-34 glass package provides hermetic sealing and thermal resistance of 375 °C/W (junction-to-ambient, on 3 mm × 3 mm copper pad).
It exhibits low noise (en ≤ 40 µV over 10–500 kHz) and a positive temperature coefficient (γz ≈ +0.04 %/°C at 16 V), making it suitable for low-drift biasing and calibration references where noise and thermal stability are critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (Vz) | 15.37–17.09 V at 5 mA - defines usable regulation window for ±4.5% tolerance design margin |
| Power Dissipation (P) | 400 mW at TA = 25 °C - sets maximum continuous DC power before thermal derating applies |
| Dynamic Impedance (Zz) | ≤ 50 Ω at Iz = 5 mA - ensures minimal output voltage shift under small-signal load transients |
| Reverse Current (IR) | ≤ 0.1 µA at VR = 12 V - guarantees high off-state impedance for leakage-sensitive bias networks |
| Noise Level (en) | ≤ 40 µV (10–500 kHz) - supports low-noise analog references in sensor front-ends and ADC references |
| Surge Power (PRSM) | 2.4 W (t = 10 µs) - enables transient overvoltage clamping without failure in pulse-limited protection |
| Junction Temp (Tj) | 175 °C max - allows operation in high-ambient industrial environments with appropriate PCB thermal relief |
Pinout & Package
RD16JS-AZ uses a DO-34 (JEDEC) axial glass package with cathode indicated by a blue band. No polarity reversal or multi-terminal configuration - only two terminals: anode and cathode.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Reference ground node | Connected to circuit ground or lower-potential node when used in reverse-biased regulation |
| Cathode | Zener breakdown terminal / Output reference node | Provides stabilized 16 V output when reverse-biased; marked with blue band on DO-34 body |
Key Features
| Feature | Design Value |
|---|---|
| Low noise performance | ≤ 40 µV RMS (10–500 kHz) - reduces interference in precision analog signal chains |
| Sharp breakdown knee | Zzk ≤ 80 Ω at low current (Iz = 0.25 mA) - improves regulation accuracy at light loads |
| DO-34 glass seal | Hermetic, moisture-resistant package - ensures long-term parameter stability in humid environments |
| E24-standard Vz grading | Vz tolerance conforms to IEC 60063 E24 series - simplifies BOM standardization across voltage grades |
| High surge robustness | 2.4 W non-repetitive surge rating (10 µs) - withstands ESD and inductive kick events without degradation |
Applications
| Industrial Voltage Reference | Waveform Clipping Circuit |
|---|---|
|
Use Scenario: Providing stable bias voltage for op-amp input stages in PLC analog I/O modules operating at 85 °C ambient. IC Role / Device Role / Timing Role: Two-terminal shunt reference establishing precise 16 V rail for comparator hysteresis and DAC buffer biasing. Use Value: Maintains <±1% regulation error across –40 to +85 °C due to predictable γz and low Zz, eliminating need for active reference ICs. |
Use Scenario: Limiting audio signal peaks in guitar effects pedal preamp stage to prevent op-amp saturation. IC Role / Device Role / Timing Role: Bidirectional clipping element (with series diode) shaping symmetrical 16 V peak-to-peak envelope. Use Value: Sharp knee and low Zz ensure clean, repeatable clipping threshold with minimal harmonic distortion below 20 kHz. |
| Constant Current Source | Overvoltage Protection Clamp |
|
Use Scenario: Setting fixed emitter current in discrete transistor current mirror for sensor excitation in automotive temperature sensors. IC Role / Device Role / Timing Role: Zener-based current-setting element in series with base-emitter junction of PNP transistor. Use Value: 400 mW rating supports 25 mA constant current at 16 V drop; low IR ensures minimal error at low bias currents. |
Use Scenario: Protecting microcontroller GPIO pins from 24 V field wiring transients in factory automation I/O cards. IC Role / Device Role / Timing Role: Reverse-biased clamp between I/O line and ground, absorbing surges exceeding 16 V. Use Value: 2.4 W surge rating handles 10 µs spikes up to 24 V without parametric shift; DO-34 form factor fits dense PCB layouts. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4744A (ON Semiconductor) | 14 V nominal, 1 W rating, DO-41 package, Zz = 9 Ω - higher power but looser tolerance (±5%) and larger footprint | Preferred for higher-power clamping; unsuitable where 16 V exactness or DO-34 size is required | Select when >400 mW dissipation or lower Zz is needed, and board space permits DO-41 |
| BZX55C16 (Vishay) | 16 V nominal, 500 mW, DO-35 package, Zz = 40 Ω - same Vz grade, slightly higher power, different thermal profile | Compatible in voltage-critical roles; requires revalidation of thermal layout due to DO-35 vs DO-34 pad geometry | Choose for RoHS-compliant supply chain or where DO-35 assembly infrastructure exists |
Compared with RD16JS-AZ, 1N4744A offers higher surge capacity but sacrifices voltage precision and package compactness, while BZX55C16 matches Vz closely but demands thermal redesign due to differing package thermal resistance and lead pitch.
Availability
RD16JS-AZ is available at Aetrix Electronics and suitable for industrial voltage reference, waveform clipping, constant current source, and overvoltage protection applications requiring stable component supply, long-lifecycle support, and legacy Renesas compatibility.
Supply support for RD16JS-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 Japanese semiconductor manufacturer formed in 2010 via merger of NEC Electronics and Renesas Technology, specializing in microcontrollers, analog, and power devices for industrial and automotive markets.
The RDJS series was developed by NEC as a family of precision, low-noise Zener diodes for analog signal conditioning and voltage stabilization in standard-grade industrial equipment - emphasizing reliability, tight Vz grading, and thermal stability.
FAQ
What is the exact zener voltage range for RD16JS-AZ at 5 mA test current?
The RD16JS-AZ has a guaranteed zener voltage range of 15.37 V to 17.09 V when tested at Iz = 5 mA per Renesas datasheet D13937EJ5V0DS00. This 4.5% tolerance aligns with E24 standard grading and reflects the AB1–AB3 suffix variants - RD16JS-AZ corresponds to the AB2 variant (15.85–16.51 V). The RD16JS-AZ must be operated within this range to meet specification.
Is RD16JS-AZ suitable for surface-mount assembly?
No - RD16JS-AZ uses a DO-34 axial glass package with radial leads intended for through-hole mounting. It is not compatible with SMT reflow or wave soldering processes. For surface-mount equivalents, consider SOD-123 or SOD-323 packaged Zeners like BZT52-B16, but note differences in thermal performance and voltage tolerance.
What is the maximum allowable reverse surge power for RD16JS-AZ?
The RD16JS-AZ supports a non-repetitive surge reverse power of 2.4 W at pulse width t = 10 µs, as specified in Figure 9 of the datasheet. Exceeding this limit - even briefly - risks irreversible junction damage. Designers must ensure transient energy (V × I × t) stays below 24 µJ for safe operation.
Does RD16JS-AZ have a specified junction-to-ambient thermal resistance?
Yes - the RD16JS-AZ has a typical junction-to-ambient thermal resistance (Rth) of 375 °C/W when mounted on a 3 mm × 3 mm copper pad (37 µm thick, leaf copper), per Figure 7 in the datasheet. This value drops significantly with larger copper areas or internal layers, and must be used to calculate actual junction temperature under DC load.
Can RD16JS-AZ be used in life-support medical applications?
No - RD16JS-AZ is classified as a "Standard" quality grade device per Renesas' quality policy (Section 7 of datasheet), approved only for computers, office equipment, industrial robots, and similar non-safety-critical applications. It is explicitly excluded from life-support, aerospace, nuclear, or other "Specific" grade uses without written consent from Renesas Electronics.
RD16JS-AZ 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:
- -
RD16JS-AZ FAQ
1.How can I place an order for RD16JS-AZ through Aetrix?
Please submit a Request for Quotation (RFQ) for RD16JS-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 RD16JS-AZ reliable?
The price and inventory of RD16JS-AZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for RD16JS-AZ is usually 5 days.
3.What payment methods are accepted for RD16JS-AZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for RD16JS-AZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for RD16JS-AZ?
RD16JS-AZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your RD16JS-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 RD16JS-AZ?
For technical support, including RD16JS-AZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your RD16JS-AZ requirements.
6.How does Aetrix verify that RD16JS-AZ is sourced from the original manufacturer or authorized distributors?
All RD16JS-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 RD16JS-AZ meets industry standards.
7.What is the process for return or replacement of RD16JS-AZ?
All RD16JS-AZ units undergo pre-shipment inspection (PSI). If there is an issue with RD16JS-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 RD16JS-AZ part is unused and in its original packaging.
Return procedure for RD16JS-AZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
RD16JS-AZ Tags
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