My Inquiry
My Account
Renesas RD16F(N)-T7
- Part No.:
- RD16F(N)-T7
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
RD16F(N)-T7.pdf
- Description:
- DIODE ZENER
- Quantity:
- Payment:
- Shipping:
Inventory:5,000
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
RD16F(N)-T7 from Renesas Electronics is a 1 W planar-type silicon Zener diode with nominal zener voltage of 16 V (B-grade, min 14.98 V / max 16.71 V), dynamic impedance of 12 Ω at 20 mA, and temperature coefficient of +12 mV/°C - used for precision voltage regulation and surge absorption in power supply rails and signal conditioning circuits.
For engineers reviewing the RD16F(N)-T7 datasheet, RD16F(N)-T7 pinout, RD16F(N)-T7 application, or RD16F(N)-T7 equivalent, this device serves as a standard-voltage reference and overvoltage clamp in industrial power supplies, analog sensor interfaces, and embedded microcontroller reset circuits where stable 16 V regulation under 20 mA bias is required.
Technical Context
This Zener diode employs a planar glass-sealed DHD (Double Heatsink Diode) structure optimized for thermal dissipation in TO-204AA (DO-41) packages. Its 1 W power rating is derated linearly above 25°C ambient per Figure 1, with junction temperature limited to 175°C.
The device exhibits a positive zener voltage temperature coefficient (+12 mV/°C typical at 20 mA), indicating increasing VZ with rising temperature - suitable for temperature-compensated references when paired with negative-coefficient components. Reverse leakage remains ≤10 μA at 12.8 V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 14.98 V to 16.71 V at IZ = 20 mA - defines stable regulation range for 16 V nominal rail clamping |
| Power Dissipation (P) | 1.0 W at TA = 25°C - sets maximum continuous DC power handling before thermal derating |
| Dynamic Impedance (ZZ) | 12 Ω at IZ = 20 mA - determines output voltage variation under load current changes |
| Zener Voltage Tempco (γZ) | +12 mV/°C typical - quantifies VZ drift per degree Celsius for thermal stability analysis |
| Reverse Current (IR) | ≤10 μA at VR = 12.8 V - ensures low leakage in standby or high-impedance bias networks |
| Surge Power (PRSM) | 400 W for t = 10 μs - supports transient overvoltage suppression without failure |
| Junction Temperature (Tj) | 175°C maximum - constrains heatsinking and PCB copper area requirements |
Pinout & Package
RD16F(N)-T7 uses the JEDEC DO-41 (TO-204AA) axial-leaded glass package with cathode indicated by a black band. The device has two terminals: anode and cathode - no internal connections or multi-pin configuration.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential node in reverse-biased Zener operation; carries forward current up to 200 mA |
| Cathode | Zener breakdown terminal | Marked with black band; connected to higher-potential node during regulation; sinks current to maintain VZ |
Key Features
| Feature | Design Value |
|---|---|
| 1 W Planar Zener Structure | Enables stable power dissipation and repeatable breakdown characteristics in compact DO-41 form factor |
| E24 Voltage Series Compliance | Supports standardized BOM consolidation across 2–82 V Zener families with 5% tolerance grading |
| Positive Temperature Coefficient | +12 mV/°C enables predictable VZ rise with temperature - useful in temp-compensated reference designs |
| DO-41 Mechanical Robustness | Glass-sealed axial package withstands mechanical stress and provides reliable long-term hermeticity |
| Surge Withstand Capability | 400 W peak reverse power handling for 10 μs pulses - protects downstream circuitry from ESD and line transients |
Applications
| Industrial Power Supply Regulation | Microcontroller Reset Circuit |
|---|---|
Use Scenario: Stabilizing 16 V auxiliary rail in programmable logic controller (PLC) power stage. IC Role / Device Role / Timing Role: Zener reference providing precise voltage threshold for linear regulator feedback or discrete transistor switch control. Use Value: Maintains ±5% output regulation across 0–70°C ambient while absorbing ripple-induced surges up to 400 W (10 μs). |
Use Scenario: Generating clean reset signal for Renesas RL78 or RX microcontrollers during brown-out conditions. IC Role / Device Role / Timing Role: Clamping reset line voltage to 16 V to prevent false triggering while enabling fast recovery after power-up. Use Value: Low 10 μA leakage ensures minimal current draw in sleep mode; +12 mV/°C tempco aligns with MCU VREF drift for consistent reset threshold. |
| Analog Sensor Signal Conditioning | Surge Protection in RS-485 Interface |
Use Scenario: Biasing and protecting 4–20 mA current loop transmitter front-end against overvoltage faults. IC Role / Device Role / Timing Role: Shunt regulator establishing stable 16 V reference for op-amp biasing and fault-clamping node. Use Value: 12 Ω dynamic impedance ensures <100 mV deviation under 8 mA sensor current step changes - preserving loop accuracy. |
Use Scenario: Protecting RS-485 transceiver (e.g., ISL3245E) bus lines from induced lightning surges in factory automation cabling. IC Role / Device Role / Timing Role: Bidirectional transient voltage suppressor (TVS) configured in back-to-back Zener arrangement with RD16F(N)-T7 pair. Use Value: 400 W surge rating at 10 μs matches IEC 61000-4-5 Level 3 test requirements; DO-41 footprint simplifies layout near connector entry points. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4744A | 15 V nominal (14.25–15.75 V), 1 W, DO-41, ZZ = 14 Ω @ 25 mA, γZ = +11 mV/°C | Slightly lower nominal voltage; tighter 5% tolerance but same tempco sign and magnitude | Select when 15 V regulation is acceptable and legacy design compatibility with ON Semiconductor footprint is required. |
| BZX55-C16 | 16 V nominal (15.3–16.7 V), 500 mW, DO-35, ZZ = 40 Ω @ 5 mA, γZ = +12 mV/°C | Half the power rating and higher dynamic impedance; smaller DO-35 package limits thermal performance | Choose only for space-constrained low-power applications where 500 mW derating and higher ZZ are acceptable. |
Compared with 1N4744A and BZX55-C16, RD16F(N)-T7 offers superior thermal robustness (1 W vs. 500 mW), lower dynamic impedance (12 Ω vs. 14–40 Ω), and identical temperature coefficient behavior - making it preferred for industrial power rails requiring sustained 20 mA bias and surge resilience.
Availability
RD16F(N)-T7 is available at Aetrix Electronics and suitable for industrial power supplies, microcontroller reset circuits, analog sensor interfaces, and RS-485 surge protection requiring stable component supply with full traceability and lifecycle continuity.
Supply support for RD16F(N)-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 Japanese semiconductor manufacturer specializing in microcontrollers, analog, and power devices for industrial, automotive, and infrastructure markets.
RD16F(N)-T7 belongs to the RD2.0F–RD82F planar Zener diode family designed for general-purpose voltage regulation and transient suppression in standard-grade applications including office equipment, industrial robots, and test instrumentation.
FAQ
What is the exact zener voltage range for RD16F(N)-T7 at 20 mA test current?
The RD16F(N)-T7 has a guaranteed zener voltage range of 14.98 V to 16.71 V when measured at IZ = 20 mA and TA = 25°C, per the B-grade specification in Renesas data sheet D13936EJ5V0DS. This 5% tolerance window reflects the E24 series standardization and applies to all RD16F(N)-T7 units shipped under this part number.
Does RD16F(N)-T7 have a cathode marking, and how is polarity identified?
Yes, RD16F(N)-T7 features a black cathode band on the glass body - consistent with JEDEC DO-41 standard marking. The cathode terminal must be connected to the higher-potential node in Zener regulation mode; the anode connects to the lower-potential or ground-referenced point. This polarity is critical for correct reverse-bias operation.
Can RD16F(N)-T7 be used in parallel for higher power dissipation?
No - RD16F(N)-T7 should not be operated in parallel without external balancing resistors due to manufacturing variations in zener voltage (±5%) and dynamic impedance. Uneven current sharing may cause thermal runaway. For >1 W requirements, use a single higher-rated device or redesign with active regulation instead of parallel Zeners.
What is the maximum allowable reverse voltage before breakdown for RD16F(N)-T7?
The RD16F(N)-T7 begins controlled zener breakdown at its specified VZ range (14.98–16.71 V). Its rated reverse voltage (VR) is 12.8 V - meaning reverse leakage remains ≤10 μA below this value. Exceeding VR does not damage the device, but operation above VZ enters regulated conduction, not avalanche failure.
Is RD16F(N)-T7 compliant with RoHS and lead-free assembly processes?
Yes, RD16F(N)-T7 meets EU RoHS Directive requirements and is compatible with lead-free reflow soldering profiles. Renesas confirms environmental compliance per data sheet D13936EJ5V0DS and recommends verifying latest status via Renesas' official product page or direct inquiry to their sales office for specific batch-level documentation.
RD16F(N)-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:
- -
RD16F(N)-T7 FAQ
1.How can I place an order for RD16F(N)-T7 through Aetrix?
Please submit a Request for Quotation (RFQ) for RD16F(N)-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 RD16F(N)-T7 reliable?
The price and inventory of RD16F(N)-T7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for RD16F(N)-T7 is usually 5 days.
3.What payment methods are accepted for RD16F(N)-T7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for RD16F(N)-T7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for RD16F(N)-T7?
RD16F(N)-T7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your RD16F(N)-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 RD16F(N)-T7?
For technical support, including RD16F(N)-T7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your RD16F(N)-T7 requirements.
6.How does Aetrix verify that RD16F(N)-T7 is sourced from the original manufacturer or authorized distributors?
All RD16F(N)-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 RD16F(N)-T7 meets industry standards.
7.What is the process for return or replacement of RD16F(N)-T7?
All RD16F(N)-T7 units undergo pre-shipment inspection (PSI). If there is an issue with RD16F(N)-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 RD16F(N)-T7 part is unused and in its original packaging.
Return procedure for RD16F(N)-T7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
RD16F(N)-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…
