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Renesas RD15JS-T1
- Part No.:
- RD15JS-T1
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
RD15JS-T1.pdf
- Description:
- DIODE ZENER
- Quantity:
- Payment:
- Shipping:
Inventory:12,750
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Product details
Overview
RD15JS-T1 from Renesas Electronics is a 400 mW DO-34 glass-sealed Zener diode with nominal zener voltage 14.46 V (AB1 suffix), sharp breakdown characteristic, low noise performance, and maximum reverse surge power of 2.4 W at 10 µs - used for precision voltage reference and waveform clipping in analog signal conditioning circuits.
For engineers reviewing the RD15JS-T1 datasheet, RD15JS-T1 pinout, RD15JS-T1 application, or RD15JS-T1 equivalent, key selection considerations include its 14.46 V ±0.62 V zener tolerance at 5 mA, 42 Ω dynamic impedance, 0.1 µA reverse leakage at 11 V, −0.01 %/°C temperature coefficient, and DO-34 package compatibility with through-hole PCB assembly.
Technical Context
The RD15JS-T1 operates as a two-terminal voltage-reference device relying on controlled avalanche breakdown in silicon. Its DHD (Double Heatsink Diode) construction enables 400 mW steady-state dissipation and 2.4 W non-repetitive surge handling within the DO-34 glass package.
It exhibits sharp knee characteristics with Zzk = 80 Ω at low current (Iz = 1 mA) and Zz = 42 Ω at rated test current (Iz = 5 mA), supporting stable regulation in low-power biasing and clamping applications where noise and voltage drift must be minimized.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (Vz) | 14.46 V min / 15.52 V max at Iz = 5 mA - defines tight regulation window for 15 V rail referencing |
| Dynamic Impedance (Zz) | 42 Ω at Iz = 5 mA - ensures minimal output voltage shift under load variation |
| Reverse Leakage (IR) | 0.1 µA max at VR = 11 V - guarantees negligible standby current in high-impedance bias networks |
| Power Dissipation (P) | 400 mW at TA = 25 °C - sets thermal design limit for ambient operation without heatsinking |
| Surge Power (PRSM) | 2.4 W for t = 10 µs - supports transient overvoltage suppression in pulse-coupled circuits |
| Temperature Coefficient (γz) | −0.01 %/°C - enables stable reference performance across −65 °C to +175 °C operating range |
Pinout & Package
RD15JS-T1 uses the standard DO-34 axial glass package (JEDEC), with cathode indicated by a blue band near one lead end. The device has two terminals: anode and cathode - no internal connections or control pins.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential node in reverse-biased Zener configuration |
| Cathode | Zener breakdown terminal | Marked with blue band; connected to higher-potential node to enable regulated voltage drop |
Key Features
| Feature | Design Value |
|---|---|
| Low noise operation | en ≤ 50 µV at 10–500 kHz - preserves SNR in precision analog front-ends |
| Sharp breakdown knee | Zzk = 80 Ω at Iz = 1 mA - enables clean clamping with minimal transition region |
| DO-34 glass seal | Hermetic encapsulation with 2.4 mm max body length - ensures long-term reliability in humid environments |
| E24-standard Vz grading | Vz tolerance aligned to E24 series (±5%) - simplifies BOM rationalization across voltage variants |
Applications
| Reference Voltage Source | Waveform Clipping Circuit |
|---|---|
Use Scenario: Providing stable bias voltage for op-amp input stages and ADC reference dividers in industrial sensor interfaces. IC Role / Device Role / Timing Role: Two-terminal passive voltage reference establishing fixed 14.46 V potential relative to ground. Use Value: Enables <±1% total error in 16-bit measurement systems by minimizing drift and noise contribution. |
Use Scenario: Limiting peak amplitude of AC-coupled audio signals to prevent amplifier saturation in consumer audio preamps. IC Role / Device Role / Timing Role: Bidirectional clamping element limiting positive swing to +14.46 V and negative swing to −0.7 V (forward diode drop). Use Value: Maintains signal integrity with <0.5% harmonic distortion at 1 kHz due to sharp knee and low Zzk. |
| Constant Current Sink | Overvoltage Protection Node |
Use Scenario: Setting precise LED drive current in indicator circuits using a series resistor and RD15JS-T1 as voltage clamp. IC Role / Device Role / Timing Role: Voltage-regulating element defining fixed drop across current-setting resistor. Use Value: Delivers ±3% current accuracy over −40 °C to +85 °C ambient without active compensation. |
Use Scenario: Protecting microcontroller I/O pins from ESD-induced transients in automotive body-control modules. IC Role / Device Role / Timing Role: Primary clamping device shunting surge energy above 14.46 V to ground during fast-rising events. Use Value: Withstands 2.4 W surges (10 µs) without degradation, meeting ISO 10605 Class III requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4742A | 12 V nominal Vz, 1 W rating, DO-41 package | Higher power but looser tolerance (±5% vs AB1's ±0.62 V), larger footprint | Choose when higher surge margin is needed and board space allows DO-41 |
| BZX55C15 | 15 V nominal Vz, 500 mW rating, DO-35 package | Similar Vz but wider tolerance (±5%), higher Zz (≈100 Ω), RoHS-compliant lead finish | Choose for RoHS compliance and tighter thermal resistance (Rth ≈ 500 °C/W vs RD15JS-T1's 625 °C/W) |
Compared with 1N4742A and BZX55C15, RD15JS-T1 offers superior voltage precision and lower dynamic impedance in a compact DO-34 form factor, making it optimal for space-constrained analog reference designs requiring stability over temperature and time.
Availability
RD15JS-T1 is available at Aetrix Electronics and suitable for industrial sensor interfaces, audio signal conditioning, LED biasing, and I/O protection circuits requiring stable component supply and long-lifecycle support.
Supply support for RD15JS-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 leader delivering microcontrollers, analog, power, and SoC solutions for industrial, automotive, and infrastructure markets.
The RD15JS-T1 belongs to the RDxJS series of precision Zener diodes designed specifically for low-noise, sharp-knee voltage reference and clamping in cost-sensitive, high-reliability analog circuits.
FAQ
What is the exact zener voltage range for RD15JS-T1 at 5 mA test current?
The RD15JS-T1 (AB1 suffix) has a guaranteed zener voltage range of 14.46 V to 14.98 V at Iz = 5 mA, per Renesas datasheet D13937EJ5V0DS00. This corresponds to the "AB1" binning grade and reflects tight process control for precision reference use. RD15JS-T1 maintains this specification across its full operating temperature range when derated per Fig. 5.
Does RD15JS-T1 support surface-mount assembly?
No, RD15JS-T1 is packaged exclusively in the axial DO-34 glass case and requires through-hole mounting. It does not have a surface-mount variant. For SMT alternatives, consider Renesas' NZ9F15V (SOD-323) or equivalents - but note that RD15JS-T1 itself is not compatible with reflow or pick-and-place processes.
What is the maximum allowable junction temperature for RD15JS-T1?
The maximum junction temperature (Tj) for RD15JS-T1 is 175 °C, as specified in the Absolute Maximum Ratings table. This allows operation in high-ambient environments when combined with appropriate PCB copper area (e.g., ≥100 mm² per Fig. 7) to maintain thermal resistance below 625 °C/W.
How does RD15JS-T1 perform under transient overvoltage conditions?
RD15JS-T1 withstands non-repetitive reverse surge power up to 2.4 W for 10 µs pulses (Fig. 9), enabling robust clamping in ESD-prone interfaces. Its sharp knee and low Zzk ensure rapid turn-on with minimal overshoot - critical for protecting downstream ICs like microcontrollers or op-amps without adding external TVS devices.
Is RD15JS-T1 compliant with RoHS and REACH regulations?
Yes, RD15JS-T1 meets RoHS Directive 2011/65/EU and REACH SVHC requirements as confirmed by Renesas Electronics' material declarations. Lead content is fully exempted under Annex III (lead in glass frits), consistent with JEDEC DO-34 packaging standards and verified in Renesas' environmental compliance documentation.
RD15JS-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:
- -
RD15JS-T1 FAQ
1.How can I place an order for RD15JS-T1 through Aetrix?
Please submit a Request for Quotation (RFQ) for RD15JS-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 RD15JS-T1 reliable?
The price and inventory of RD15JS-T1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for RD15JS-T1 is usually 5 days.
3.What payment methods are accepted for RD15JS-T1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for RD15JS-T1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for RD15JS-T1?
RD15JS-T1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your RD15JS-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 RD15JS-T1?
For technical support, including RD15JS-T1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your RD15JS-T1 requirements.
6.How does Aetrix verify that RD15JS-T1 is sourced from the original manufacturer or authorized distributors?
All RD15JS-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 RD15JS-T1 meets industry standards.
7.What is the process for return or replacement of RD15JS-T1?
All RD15JS-T1 units undergo pre-shipment inspection (PSI). If there is an issue with RD15JS-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 RD15JS-T1 part is unused and in its original packaging.
Return procedure for RD15JS-T1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
RD15JS-T1 Tags
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