My Inquiry
My Account
Renesas RD10F-T8-AZ
- Part No.:
- RD10F-T8-AZ
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
RD10F-T8-AZ.pdf
- Description:
- DIODE ZENER
- Quantity:
- Payment:
- Shipping:
Inventory:43,115
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
RD10F-T8-AZ from Renesas Electronics is a 1 W planar silicon Zener diode with nominal zener voltage of 10 V (B grade, 9.83–10.40 V), dynamic impedance of 6 Ω at 40 mA, and reverse current ≤10 μA at 7.0 V; it features a DO-41 glass-sealed DHD package and is used for precision voltage regulation and surge absorption in power supply feedback loops.
For engineers reviewing the RD10F-T8-AZ datasheet, RD10F-T8-AZ pinout, RD10F-T8-AZ application, or RD10F-T8-AZ equivalent, this page delivers verified electrical specs, thermal behavior, JEDEC DO-41 terminal mapping, and two validated alternative Zeners for voltage reference and transient protection design-in.
Technical Context
This device operates as a two-terminal voltage reference with stable breakdown characteristics across −65°C to +175°C ambient range; its zener voltage temperature coefficient is +6.5 mV/°C (typical), indicating positive drift with temperature rise, and it supports surge reverse power up to 400 W for 10 μs pulses.
The RD10F-T8-AZ uses a planar junction structure in a glass-encapsulated DO-41 package with double heatsink (DHD) construction, enabling 1.0 W steady-state dissipation at 25°C and derated performance per Figure 1 - e.g., ~0.6 W at 100°C ambient.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 9.83–10.40 V at IZ = 40 mA; defines tight regulation window for feedback sensing in 12 V rail monitors. |
| Dynamic Impedance (ZZ) | 6 Ω max at IZ = 40 mA; ensures minimal output voltage variation under load transients. |
| Reverse Current (IR) | ≤10 μA at VR = 7.0 V; guarantees low leakage in high-impedance bias networks. |
| Power Dissipation (P) | 1.0 W at TA = 25°C; requires thermal management above 60°C ambient per derating curve. |
| Junction Temperature (Tj) | 175°C max; sets absolute upper limit for safe operation under sustained power stress. |
| Surge Reverse Power (PRSM) | 400 W for t = 10 μs; enables clamping of fast ESD or inductive spikes without failure. |
| Zener Temp. Coefficient (γZ) | +6.5 mV/°C typical; informs compensation design when operating over wide temperature ranges. |
Pinout & Package
RD10F-T8-AZ is housed in a JEDEC DO-41 glass-sealed axial package (3.0 mm Ø × 5.0 mm L) with cathode indicated by a black band; the device has two terminals - anode and cathode - with no internal circuitry or polarity-sensitive control logic.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point in forward bias; connected to lower-potential node in zener regulation. | Must be held ≤0.7 V below cathode to avoid forward conduction; ties to ground or return path in shunt regulator. |
| Cathode | Current exit point in reverse breakdown; referenced to regulated output voltage node. | Connected to supply rail or feedback node; black band identifies this terminal for correct PCB orientation. |
Key Features
| Feature | Design Value |
|---|---|
| E24-standardized voltage series | Enables BOM consolidation across 2–82 V zener range using common tolerance and packaging. |
| DO-41 glass-sealed DHD structure | Provides mechanical robustness and thermal stability superior to plastic-packaged alternatives. |
| 1 W continuous power rating | Supports higher-current shunt regulation than 0.5 W devices, reducing need for external pass transistors. |
| B-grade voltage tolerance (±2.5%) | Offers tighter VZ distribution than general-purpose grades, improving system-level accuracy. |
| −65°C to +175°C storage range | Validates suitability for industrial and automotive under-hood environments without derating. |
Applications
| Power Supply Feedback Regulation | Overvoltage Protection Clamping |
|---|---|
|
Use Scenario: Stabilizing output voltage in isolated flyback or buck-derived DC-DC converters via optocoupler feedback loop. IC Role / Device Role / Timing Role: Shunt voltage reference providing precise 10 V threshold to error amplifier input. Use Value: Maintains ±1% output regulation across line/load/temperature with <6 Ω dynamic impedance limiting AC error injection. |
Use Scenario: Protecting microcontroller I/O pins or sensor inputs from transient surges on shared PCB traces. IC Role / Device Role / Timing Role: Fast-acting clamp diverting >7 V spikes to ground before damage occurs. Use Value: Absorbs 400 W for 10 μs without degradation, leveraging DO-41 thermal mass and low ZZ. |
| Reference Voltage Source | Waveform Limiting Circuit |
|
Use Scenario: Generating stable 10 V reference for ADC biasing or analog comparator thresholds in data acquisition modules. IC Role / Device Role / Timing Role: Passive two-terminal reference with minimal temperature-induced drift (+6.5 mV/°C). Use Value: Delivers <10 μA leakage at 7 V, preserving high-impedance node integrity and measurement accuracy. |
Use Scenario: Hard-limiting audio signal peaks or PWM edges to prevent amplifier saturation or gate driver overdrive. IC Role / Device Role / Timing Role: Bidirectional clipper (forward + reverse) shaping waveform amplitude boundaries. Use Value: Uses 0.7 V forward drop and 10 V reverse breakdown to define symmetrical clipping envelope with sharp knee. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4740A | 10 V nominal, 1 W, DO-41, ZZ = 7 Ω @ 25 mA, Tj = 200°C, γZ = +5.5 mV/°C | Slightly lower tempco and higher junction rating; wider VZ tolerance (±5%) vs. RD10F-T8-AZ's ±2.5% | Preferred where extended thermal margin is critical and tighter voltage binning is not required. |
| BZX55C10 | 10 V nominal, 500 mW, DO-35, ZZ = 20 Ω @ 5 mA, γZ = +5.2 mV/°C, IR = 5 μA @ 7.6 V | Lower power rating and higher ZZ; smaller DO-35 package limits heat dissipation and surge handling | Acceptable only in low-power signal-level clamping; unsuitable for 1 W regulation or 400 W surge duty. |
Compared with 1N4740A and BZX55C10, RD10F-T8-AZ offers tighter voltage tolerance and lower dynamic impedance at higher test current, making it better suited for precision feedback and high-energy transient suppression - but requires careful thermal layout due to its 1 W rating in DO-41.
Availability
RD10F-T8-AZ is available at Aetrix Electronics and suitable for power supply feedback regulation, overvoltage protection clamping, and reference voltage source applications requiring stable component supply and long-term industrial lifecycle support.
Supply support for RD10F-T8-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 formed in 2010 through the merger of NEC Electronics and Renesas Technology, specializing in microcontrollers, analog, power, and timing solutions.
RD10F-T8-AZ belongs to Renesas' legacy planar Zener diode family designed for industrial-grade voltage reference and transient suppression, emphasizing reliability, thermal stability, and JEDEC-standard packaging.
FAQ
What is the zener voltage tolerance of RD10F-T8-AZ?
The RD10F-T8-AZ has a B-grade zener voltage specification of 9.83 V minimum to 10.40 V maximum at 40 mA test current, corresponding to ±2.5% tolerance around the nominal 10 V value. This tighter binning supports higher-accuracy regulation compared to standard ±5% zeners like 1N4740A, and is confirmed in Renesas datasheet D13936EJ5V0DS, page 3.
Does RD10F-T8-AZ support surge protection applications?
Yes, RD10F-T8-AZ supports surge protection with a rated surge reverse power (PRSM) of 400 W for 10 μs pulses at 25°C, as specified in Absolute Maximum Ratings. Its DO-41 DHD structure provides sufficient thermal mass for single-event clamping, making RD10F-T8-AZ suitable for ESD and inductive kick suppression in industrial interfaces.
What is the maximum junction temperature for RD10F-T8-AZ?
The maximum junction temperature (Tj) for RD10F-T8-AZ is 175°C, per Absolute Maximum Ratings in Renesas datasheet D13936EJ5V0DS. This rating governs thermal design - for example, at 100°C ambient, usable power drops to ~0.6 W (Figure 1), so RD10F-T8-AZ must be mounted with adequate copper area or heatsinking in high-temp environments.
Is RD10F-T8-AZ RoHS compliant?
RD10F-T8-AZ complies with EU RoHS Directive requirements, as confirmed by Renesas Electronics' environmental compliance documentation. The device contains no lead, mercury, cadmium, hexavalent chromium, PBB, or PBDE above threshold limits, and is suitable for use in consumer, industrial, and computing equipment per Renesas' "Standard" quality grade classification.
What package type does RD10F-T8-AZ use?
RD10F-T8-AZ uses a JEDEC DO-41 axial package with glass encapsulation and double heatsink (DHD) construction, measuring 3.0 mm diameter and 5.0 mm length. The cathode is marked with a black band, and the package is fully compatible with standard DO-41 footprint and wave-soldering processes - a key mechanical identity confirmed in Package Drawing, page 2 of datasheet D13936EJ5V0DS.
RD10F-T8-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:
- -
RD10F-T8-AZ FAQ
1.How can I place an order for RD10F-T8-AZ through Aetrix?
Please submit a Request for Quotation (RFQ) for RD10F-T8-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 RD10F-T8-AZ reliable?
The price and inventory of RD10F-T8-AZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for RD10F-T8-AZ is usually 5 days.
3.What payment methods are accepted for RD10F-T8-AZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for RD10F-T8-AZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for RD10F-T8-AZ?
RD10F-T8-AZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your RD10F-T8-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 RD10F-T8-AZ?
For technical support, including RD10F-T8-AZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your RD10F-T8-AZ requirements.
6.How does Aetrix verify that RD10F-T8-AZ is sourced from the original manufacturer or authorized distributors?
All RD10F-T8-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 RD10F-T8-AZ meets industry standards.
7.What is the process for return or replacement of RD10F-T8-AZ?
All RD10F-T8-AZ units undergo pre-shipment inspection (PSI). If there is an issue with RD10F-T8-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 RD10F-T8-AZ part is unused and in its original packaging.
Return procedure for RD10F-T8-AZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
RD10F-T8-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…
