My Inquiry
My Account
Renesas RD13F-T7
- Part No.:
- RD13F-T7
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
RD13F-T7.pdf
- Description:
- DIODE ZENER
- Quantity:
- Payment:
- Shipping:
Inventory:17,500
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
RD13F-T7 from Renesas Electronics is a 1 W planar-type silicon Zener diode with a nominal zener voltage of 13 V (B-grade, min 12.19 V / max 13.83 V), dynamic impedance of 10 Ω at 20 mA, and temperature coefficient of +10 mV/°C - designed for precision voltage regulation and surge suppression in industrial power supply rails.
For engineers reviewing the RD13F-T7 datasheet, RD13F-T7 pinout, RD13F-T7 application, or RD13F-T7 equivalent, this device serves as a stable 13 V reference in low-power analog circuits, overvoltage clamping in sensor interfaces, and transient protection in 12 V automotive auxiliary systems - requiring verification of thermal derating and reverse leakage at operating temperature.
Technical Context
This Zener diode employs a planar glass-sealed DHD (Double Heatsink Diode) structure enabling 1 W continuous power dissipation at 25°C ambient, with junction temperature rated to 175°C. Its E24-standardized voltage tolerance (±5% for B grade) supports interchangeability across standard 13 V reference designs.
The device exhibits a positive zener voltage temperature coefficient (+10 mV/°C) and low dynamic impedance (10 Ω @ 20 mA), indicating stable regulation under moderate load variation. Reverse current remains ≤10 μA at VR = 10 V, confirming suitability for low-leakage bias networks.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 12.19 V to 13.83 V (B grade, tested at 40 ms after power-on; defines regulation window for 12–14 V systems) |
| Power Dissipation (P) | 1.0 W at TA = 25°C; derates linearly above 25°C per Figure 1 (e.g., ~0.6 W at 100°C ambient) |
| Dynamic Impedance (ZZ) | 10 Ω at IZ = 20 mA; ensures <100 mV output shift for ±10 mA load change near regulation point |
| Reverse Current (IR) | ≤10 μA at VR = 10 V; enables use in high-impedance voltage divider or reference bias networks |
| Temp. Coefficient (γZ) | +10 mV/°C (typical); provides predictable +0.08%/°C drift - suitable for non-critical temp-stable references |
| Junction Temp. (Tj) | 175°C maximum; allows operation in enclosed industrial enclosures with limited airflow |
| Surge Power (PRSM) | 400 W for t = 10 μs (non-repetitive); protects downstream circuitry from ESD and inductive kick events |
Pinout & Package
RD13F-T7 uses the JEDEC DO-41 axial leaded glass package (3.0 mm diameter × 5.0 mm length), with cathode indicated by a black band. The device has two terminals: anode and cathode - no internal connections or multi-pin functionality.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential node in reverse-biased Zener configuration; carries forward current up to 200 mA |
| Cathode | Zener breakdown terminal | Marked with black band; connected to higher-potential node to enable reverse breakdown at VZ; sinks regulated current |
Key Features
| Feature | Design Value |
|---|---|
| 1 W Planar Zener Structure | DHD (Double Heatsink Diode) construction improves thermal resistance vs. conventional DO-41, supporting sustained 1 W operation with minimal derating |
| E24 Voltage Standardization | Enables direct substitution across 12 V–15 V Zener families (e.g., RD12F, RD13F, RD15F) without redesigning feedback networks |
| Positive Temperature Coefficient | +10 mV/°C allows predictable upward drift - useful when compensating negative-drift components (e.g., BJTs) in same thermal zone |
| Low Dynamic Impedance | 10 Ω at 20 mA ensures tight regulation under dynamic load steps typical in sensor signal conditioning and ADC reference buffers |
| High Surge Withstand | 400 W peak surge rating (10 μs) provides robustness against ISO 7637-2 pulse 1/2a transients in 12 V vehicle subsystems |
Applications
| Voltage Reference for Analog Sensors | Overvoltage Clamp in MCU I/O Protection |
|---|---|
Use Scenario: Providing stable 13 V reference to bridge-based pressure sensors in industrial PLC modules. IC Role / Device Role / Timing Role: Zener voltage reference source for ratiometric excitation and ADC reference scaling. Use Value: Maintains ±1% reference accuracy across −40°C to +85°C due to predictable +10 mV/°C drift and low ZZ. |
Use Scenario: Clamping 12 V CAN transceiver I/O lines against ESD and load dump surges. IC Role / Device Role / Timing Role: Passive overvoltage limiter placed between transceiver pin and ground. Use Value: Absorbs 400 W transient energy (10 μs) without failure, limiting clamped voltage to ≤15 V during ISO 10605 events. |
| Power Supply Rail Stabilizer | Waveform Limiter in Signal Conditioning |
Use Scenario: Regulating unregulated 15 V DC-DC output to clean 13 V for op-amp biasing in motor drive control boards. IC Role / Device Role / Timing Role: Shunt regulator maintaining constant voltage across parallel load. Use Value: Delivers 1 W continuous dissipation capability with thermal resistance optimized for PCB copper heatsinking (S ≥ 20 mm²). |
Use Scenario: Limiting audio line-level signals to ±13 V in analog front-end stages of test equipment. IC Role / Device Role / Timing Role: Bidirectional clipper (with series diode) shaping input waveform peaks. Use Value: Sharp 13 V knee and 10 Ω ZZ ensure consistent clipping threshold and minimal distortion below threshold. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ON Semiconductor 1N4742A | 13 V nominal (12.35–13.65 V), 1 W, ZZ = 9 Ω @ 25 mA, γZ = +10.4 mV/°C, DO-41 package | Identical voltage range and thermal specs; slightly tighter tolerance (±5% vs. RD13F-T7's B-grade ±6.5%) | Preferred where tighter initial VZ tolerance is required; same PCB footprint and thermal profile |
| Diodes Incorporated BZX84-C13 | 13 V nominal (12.4–13.6 V), 300 mW SOT-23, ZZ = 25 Ω @ 5 mA, γZ = +10.5 mV/°C | Lower power rating and higher ZZ; unsuitable for >100 mA shunt loads or high-surge environments | Select only for space-constrained low-power bias networks; not drop-in for 1 W applications requiring RD13F-T7's thermal capability |
Compared with 1N4742A, RD13F-T7 offers identical regulation performance but originates from Renesas' legacy NEC process with documented long-term stability in industrial deployments; versus BZX84-C13, RD13F-T7 delivers 3.3× higher power handling and 2.5× lower dynamic impedance - critical for high-current reference and surge absorption roles.
Availability
RD13F-T7 is available at Aetrix Electronics and suitable for industrial power supplies, sensor interface modules, and automotive body electronics requiring stable component supply with full traceability and long-lifecycle support.
Supply support for RD13F-T7 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 connectivity solutions for industrial, automotive, and infrastructure markets.
RD13F-T7 belongs to Renesas' legacy planar Zener diode family (RD2.0F–RD82F), engineered for reliable voltage regulation and transient suppression in cost-sensitive, high-volume industrial power systems.
FAQ
What is the exact zener voltage range for RD13F-T7 at 25°C?
The RD13F-T7 has a guaranteed zener voltage range of 12.19 V to 13.83 V at 25°C under B-grade specification (tested for 40 ms after power-on). This ±6.5% tolerance aligns with E24 series standardization and is confirmed in Renesas' D13936EJ5V0DS datasheet, page 3.
Does RD13F-T7 support surge protection, and what is its peak rating?
Yes, RD13F-T7 supports non-repetitive surge suppression with a peak reverse power rating of 400 W at 10 μs pulse width (Figure 7, D13936EJ5V0DS). This makes it suitable for absorbing ISO 7637-2 pulse 1/2a transients in 12 V automotive subsystems and inductive switch-off spikes in industrial controls.
What is the thermal resistance and derating behavior of RD13F-T7?
RD13F-T7's thermal resistance depends on PCB copper area: Rth ≈ 200°C/W at S = 5 mm², improving to ~120°C/W at S = 20 mm² (Figure 2, D13936EJ5V0DS). Power dissipation derates linearly above 25°C ambient - e.g., 0.6 W maximum at 100°C ambient - requiring layout attention to heatsinking foil area.
Is RD13F-T7 RoHS compliant and what is its quality grade?
RD13F-T7 meets EU RoHS Directive requirements as confirmed in Renesas' environmental compliance documentation. It carries the "Standard" quality grade per Renesas' classification (page 7, D13936EJ5V0DS), making it appropriate for industrial robots, office equipment, and communications hardware - not for life-support or aerospace applications.
How does the +10 mV/°C temperature coefficient affect system-level accuracy?
The +10 mV/°C zener voltage temperature coefficient of RD13F-T7 introduces ~+0.08%/°C drift relative to its 13 V nominal value. In a 0°C to 70°C operating range, this yields ~0.7 V total drift - acceptable for non-critical references but requires compensation if used in precision ADC references or temperature-sensitive analog chains.
RD13F-T7 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:
- -
RD13F-T7 FAQ
1.How can I place an order for RD13F-T7 through Aetrix?
Please submit a Request for Quotation (RFQ) for RD13F-T7 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 RD13F-T7 reliable?
The price and inventory of RD13F-T7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for RD13F-T7 is usually 5 days.
3.What payment methods are accepted for RD13F-T7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for RD13F-T7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for RD13F-T7?
RD13F-T7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your RD13F-T7 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 RD13F-T7?
For technical support, including RD13F-T7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your RD13F-T7 requirements.
6.How does Aetrix verify that RD13F-T7 is sourced from the original manufacturer or authorized distributors?
All RD13F-T7 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 RD13F-T7 meets industry standards.
7.What is the process for return or replacement of RD13F-T7?
All RD13F-T7 units undergo pre-shipment inspection (PSI). If there is an issue with RD13F-T7, 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 RD13F-T7 part is unused and in its original packaging.
Return procedure for RD13F-T7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
RD13F-T7 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…
