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Renesas RD10JS
- Part No.:
- RD10JS
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
RD10JS.pdf
- Description:
- DIODE ZENER 10V
- Quantity:
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Inventory:23,880
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Product details
Overview
RD10JS from Renesas Electronics is a 400 mW DO-34 glass-sealed Zener diode with nominal zener voltage 9.45–10.55 V (AB1–AB3 variants), low noise, sharp breakdown characteristic, and dynamic impedance ≤10 Ω at 5 mA - used for precision voltage reference and waveform clipping in analog signal conditioning circuits.
For engineers reviewing the RD10JS datasheet, RD10JS pinout, RD10JS application, or RD10JS equivalent, this page provides verified electrical specs, thermal behavior, package dimensions, real-world use cases, and two validated alternative Zener diodes for constant-voltage regulation and low-noise biasing applications.
Technical Context
The RD10JS operates as a reverse-biased voltage-regulating diode with sharp knee characteristics, enabling stable reference generation under low-current conditions (Iz = 5 mA). Its DO-34 package supports surface-mount-compatible through-hole assembly and exhibits thermal resistance of 375 °C/W (junction-to-ambient, on 3 mm × 3 mm copper pad).
It delivers low noise performance (en ≤ 30 µV/√Hz at Vz = 10 V, f = 10–500 kHz) and temperature coefficient γz = +0.04 %/°C - indicating positive drift optimized for mid-range voltage references where moderate TC compensation suffices.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (Vz) | 9.45–10.55 V (AB1–AB3 variants); tight E24-standard tolerance enables precise DC biasing without external trimming. |
| Power Dissipation (P) | 400 mW at TA = 25 °C; derates linearly above 25 °C per Fig. 5 - supports continuous operation in ambient up to 125 °C with board-level heatsinking. |
| Dynamic Impedance (Zz) | ≤10 Ω at Iz = 5 mA; ensures minimal output voltage variation under load transients in feedback networks. |
| Reverse Current (IR) | ≤0.1 µA at VR = 7.0 V; guarantees high off-state impedance for leakage-sensitive reference nodes. |
| Noise Level (en) | ≤30 µV/√Hz (10–500 kHz); suitable for low-noise op-amp references and sensor excitation circuits. |
| Surge Power (PRSM) | 2.4 W (t = 10 µs); withstands brief overvoltage events in protection/clamping configurations. |
| Junction Temp (Tj) | 175 °C max; allows operation in industrial environments with localized heating near power stages. |
Pinout & Package
RD10JS uses the DO-34 (JEDEC) axial glass package: cathode indicated by blue band; body length ≤2.4 mm; diameter φ1.8–2.0 mm; lead spacing ≥25 mm. Leads are tinned copper, compatible with wave and hand soldering.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Reference ground node | Connected to circuit common when used in reverse-bias regulation; defines low-impedance return path for bias current. |
| Cathode | Zener voltage output terminal | Provides stabilized voltage referenced to anode; marked with blue band; must be held at higher potential than anode for regulation. |
Key Features
| Feature | Design Value |
|---|---|
| Low-noise Zener construction | en ≤ 30 µV/√Hz enables use in audio biasing and precision ADC reference buffers without added filtering. |
| Sharp breakdown knee | Dynamic knee impedance Zzk ≤ 100 Ω ensures rapid transition into regulation - critical for fast-clipping and overvoltage detection. |
| E24-standard Vz grading | AB1/AB2/AB3 suffixes provide 3 distinct 2% tolerance bands - simplifies BOM rationalization across design revisions. |
| DHD (Double Heatsink Diode) structure | Enhanced thermal path from junction to leads improves power handling vs. standard DO-34 diodes - extends safe operating area at elevated TA. |
Applications
| Industrial Sensor Signal Conditioning | Low-Power Voltage Reference |
|---|---|
Use Scenario: Stabilizing excitation voltage for resistive bridge sensors (e.g., strain gauges) in PLC I/O modules. IC Role / Device Role / Timing Role: Zener voltage reference providing fixed 10 V bias to bridge, rejecting supply ripple. Use Value: Low noise and sharp knee ensure <±1 LSB error in 12-bit DAQ systems; 400 mW rating supports 5 mA bridge drive without derating. |
Use Scenario: Generating stable 10 V reference for microcontroller ADC in battery-powered IoT edge nodes. IC Role / Device Role / Timing Role: Passive voltage reference replacing active IC references where ultra-low quiescent current is required. Use Value: IR ≤ 0.1 µA at 7 V enables >10-year battery life in sleep mode; DO-34 footprint minimizes PCB area vs. SOT-23 alternatives. |
| Waveform Clipping Circuit | Overvoltage Protection Clamp |
Use Scenario: Limiting audio signal peaks in analog preamplifier outputs before ADC input. IC Role / Device Role / Timing Role: Bidirectional clipping device (with series resistor) setting symmetrical ±10 V hard limits. Use Value: Sharp breakdown ensures clean clipping onset; low Zz prevents distortion at 10 kHz signal edges. |
Use Scenario: Protecting RS-485 receiver inputs against transient surges in factory automation wiring. IC Role / Device Role / Timing Role: Reverse-biased clamping diode shunting excess energy to ground during ESD or lightning-induced spikes. Use Value: PRSM = 2.4 W (10 µs) absorbs IEC 61000-4-2 Level 4 contact discharge without degradation; DO-34 mechanical robustness withstands vibration. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX55C10 (ON Semiconductor) | Same DO-34 package; Vz = 9.5–10.5 V (5% tolerance); Zz = 20 Ω @ 5 mA; higher noise (50 µV/√Hz). | Acceptable where ±5% Vz tolerance and higher Zz are acceptable; not suitable for sub-1 LSB precision references. | Select when cost sensitivity outweighs noise and impedance requirements; verify thermal margin with lower Pd (500 mW but less efficient heatsinking). |
| 1N4740A (Vishay) | DO-41 package; Vz = 10 V ±5%; Zz = 17 Ω @ 25 mA; rated 1 W; larger footprint and higher Iz test current. | Requires higher bias current (25 mA) for spec compliance; unsuitable for ultra-low-power designs; better for high-surge environments. | Choose only if surge robustness >2.4 W is mandatory and board space permits DO-41; avoid in battery-powered or noise-critical apps. |
Compared with BZX55C10 and 1N4740A, RD10JS offers tighter Vz tolerance (2% vs. 5%), lower Zz (≤10 Ω vs. ≥17 Ω), and lower noise - making it optimal for precision analog signal chains where stability and spectral purity are prioritized over raw power handling.
Availability
RD10JS is available at Aetrix Electronics and suitable for industrial sensor conditioning, low-power voltage reference, waveform clipping, and overvoltage protection applications requiring stable component supply and long-term obsolescence management.
Supply support for RD10JS 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 specializing in microcontrollers, analog, and power devices, with global R&D and manufacturing infrastructure.
RD10JS belongs to the legacy NEC Zener diode family designed for general-purpose voltage regulation and signal conditioning in Standard-grade industrial and consumer equipment.
FAQ
What is the exact zener voltage range for RD10JS?
The RD10JS has three graded variants: AB1 (9.45–9.87 V), AB2 (9.77–10.21 V), and AB3 (10.11–10.55 V), all tested at 5 mA and conforming to E24 standard. The full 9.45–10.55 V span reflects the combined tolerance across all suffixes - individual units fall within their specific ABx band. RD10JS maintains this specification across its qualified operating temperature range.
Can RD10JS be used in surface-mount designs?
RD10JS uses the DO-34 axial package, which is through-hole mountable but compatible with automated insertion and reflow-compatible lead finishing. While not an SMD device, its 2.4 mm body length and tinned leads allow reliable placement on wave-soldered or hand-assembled boards - no RD10JS SMT variant exists, and conversion requires redesign to DO-213AA or SOD-123 packages with different specs.
What is the maximum reverse current guaranteed for RD10JS?
RD10JS guarantees IR ≤ 0.1 µA at VR = 7.0 V (TA = 25 °C), per Electrical Characteristics table. This ultra-low leakage supports high-impedance reference nodes and battery-backed circuits. At VR = 9.0 V, IR remains below 1 µA - confirmed by typical Iz-Vz curves showing exponential rise only beyond 95% of Vz.
How does RD10JS thermal performance compare to standard DO-34 Zeners?
RD10JS employs DHD (Double Heatsink Diode) construction, yielding lower thermal resistance: 375 °C/W (junction-to-ambient on 3 mm² copper) versus ~450–500 °C/W for generic DO-34 Zeners. This allows RD10JS to sustain 400 mW dissipation up to ~105 °C ambient - verified by Fig. 5 derating curve - improving reliability in compact enclosures.
Is RD10JS suitable for automotive applications?
RD10JS is rated as "Standard" quality grade per Renesas documentation, intended for computers, office equipment, and industrial robots - not for automotive (High Quality) or safety-critical (Specific) use. It lacks AEC-Q200 qualification, extended temperature validation, or PPAP documentation; automotive designs require formally qualified alternatives like RBxx8MM-40.
RD10JS 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:
- -
RD10JS FAQ
1.How can I place an order for RD10JS through Aetrix?
Please submit a Request for Quotation (RFQ) for RD10JS 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 RD10JS reliable?
The price and inventory of RD10JS are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for RD10JS is usually 5 days.
3.What payment methods are accepted for RD10JS?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for RD10JS transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for RD10JS?
RD10JS orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your RD10JS 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 RD10JS?
For technical support, including RD10JS datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your RD10JS requirements.
6.How does Aetrix verify that RD10JS is sourced from the original manufacturer or authorized distributors?
All RD10JS 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 RD10JS meets industry standards.
7.What is the process for return or replacement of RD10JS?
All RD10JS units undergo pre-shipment inspection (PSI). If there is an issue with RD10JS, 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 RD10JS part is unused and in its original packaging.
Return procedure for RD10JS:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
RD10JS Tags
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