My Inquiry
My Account
Diodes Incorporated DFLT30A-7
- Part No.:
- DFLT30A-7
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- POWERDI®123
- Datasheet:
-
DFLT30A-7.pdf
- Description:
- TVS DIODE 30VWM 48.4VC PWRDI 123
- Quantity:
- Payment:
- Shipping:
Inventory:40,167
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
DFLT30A-7 from Diodes Incorporated is a unidirectional 30V standoff transient voltage suppressor (TVS) diode in PowerDI123 package, rated for 225W peak pulse power (10/1000µs), 48.4V max clamping voltage at 4.65A IPP, and 1.0W DC power dissipation. It protects automotive and industrial DC power rails against ESD, lightning surges, and load dump transients.
For engineers reviewing the DFLT30A-7 datasheet, DFLT30A-7 pinout, DFLT30A-7 application, or DFLT30A-7 equivalent, key selection criteria include reverse standoff voltage (30V), clamping performance (VC = 48.4V @ IPP = 4.65A), thermal resistance (RθJA = 125°C/W), and AEC-Q101 qualification status for automotive use.
Technical Context
This TVS diode operates as a unidirectional clamping device with cathode-band polarity, designed to shunt transient energy to ground when reverse voltage exceeds 30V VRWM. Its silicon avalanche structure ensures fast response (<1ns) and stable breakdown at 33.3–36.8V (VBR min/max).
It is optimized for surface-mount placement on FR-4 PCBs with 1-inch² 2oz copper pad, delivering 125°C/W junction-to-ambient thermal resistance and 6°C/W junction-to-solder-point resistance-critical for sustained surge handling in compact power electronics layouts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reverse Standoff Voltage | 30 V - Maximum continuous DC operating voltage before clamping initiates |
| Breakdown Voltage | 33.3–36.8 V - Confirmed avalanche conduction range at 1.0 mA test current |
| Max Clamping Voltage | 48.4 V @ 4.65 A - Peak voltage seen by protected circuit during 10/1000µs surge |
| Peak Pulse Power | 225 W - Sustained transient energy absorption capability per single 10/1000µs event |
| Thermal Resistance | 125 °C/W - Junction-to-ambient rating on standard FR-4 board, defines derating above +25°C |
| Operating Temp Range | −65 to +150 °C - Validated performance across extended automotive and industrial temperature extremes |
Pinout & Package
Package: PowerDI123 - Surface-mount, single-ended, cathode-band marked plastic package with matte tin annealed terminals; 0.01 g mass; UL 94V-0 rated molding compound; moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Input/Line side | Connected to protected line (e.g., 24V rail); conducts forward only during fault |
| Cathode | Ground reference | Connected to system ground; cathode band identifies this terminal visually and electrically |
Key Features
| Feature | Design Value |
|---|---|
| 225W peak pulse rating | Enables robust protection against IEC 61000-4-5 Level 4 surges (4kV/2Ω) on 24V systems |
| Low clamping ratio (VC/VRWM = 1.61) | Minimizes overvoltage stress on downstream ICs such as CAN transceivers or microcontrollers |
| PowerDI123 footprint | Reduces PCB area vs. SMA/SMB while maintaining >1W steady-state dissipation capability |
| AEC-Q101 qualified variant available | Supports automotive-grade reliability requirements including temperature cycling and HTRB testing |
Applications
| Automotive Body Control Module (BCM) | Industrial PLC Digital Input |
|---|---|
Use Scenario: Protects 24V supply input of BCM against load dump (ISO 7637-2 Pulse 5a) and jump-start transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery rail and local LDO/regulator input. Use Value: Clamps to ≤48.4V within nanoseconds, preventing damage to 36V-rated power management ICs. | Use Scenario: Shields 24V digital input channel of PLC I/O module from field-wiring induced surges. IC Role / Device Role / Timing Role: Primary front-end transient suppressor before optocoupler or Schmitt trigger input stage. Use Value: Limits transient overshoot below 50V, ensuring compatibility with 5V logic-level interface ICs. |
| Telecom Remote Radio Unit (RRU) | Medical Infusion Pump Power Supply |
Use Scenario: Guards auxiliary 24V DC feed to RRU enclosure against induced lightning surges on outdoor cabling. IC Role / Device Role / Timing Role: First-line defense on DC input connector, upstream of bulk capacitance and DC/DC converter. Use Value: Absorbs 225W pulses without degradation, preserving long-term reliability in unattended deployments. | Use Scenario: Secures main 24V DC adapter input against ESD events during cable insertion and hospital-grade power disturbances. IC Role / Device Role / Timing Role: Low-capacitance (≈15 pF @ 0V) TVS minimizing signal integrity impact on adjacent analog sensors. Use Value: Maintains <1 µA leakage at 30V, avoiding false triggers in safety-critical low-current monitoring circuits. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ30A | Same 30V VRWM, but SMA package; lower PPK (400W) yet higher RθJA (150°C/W); VF = 3.5V same | Larger footprint; less suitable for high-density automotive PCBs requiring PowerDI123 miniaturization | Select when legacy SMA layout exists and thermal margin allows higher junction rise |
| DFLT30AQ-7 | AEC-Q101 qualified version; identical electrical specs; same PowerDI123 package; automotive change control documentation included | Required for production automotive programs needing PPAP submission and IATF 16949 traceability | Choose for OEM/ Tier-1 designs where automotive qualification is mandatory |
Compared with SMAJ30A and DFLT30AQ-7, DFLT30A-7 delivers optimal balance of miniaturized footprint, proven 225W surge capacity, and industrial-grade reliability-making it ideal for space-constrained non-automotive 24V systems where AEC-Q101 is not mandated.
Availability
DFLT30A-7 is available at Aetrix Electronics and suitable for automotive body control modules, industrial PLC inputs, telecom remote radio units, and medical infusion pump power supplies requiring stable component supply and consistent surge protection performance.
Supply support for DFLT30A-7 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
Diodes Incorporated is a global semiconductor company specializing in discrete, analog, and mixed-signal solutions, with design, manufacturing, and sales operations across Asia, the Americas, and Europe.
The DFLT series targets high-reliability transient suppression in harsh environments, with emphasis on automotive, industrial, and communications infrastructure-designed to meet stringent surge immunity standards like ISO 7637-2 and IEC 61000-4-5.
FAQ
What is the maximum clamping voltage of DFLT30A-7 at its rated peak pulse current?
The maximum clamping voltage (VC) is 48.4 V at 4.65 A peak pulse current (IPP), measured under the standardized 10/1000 µs double-exponential waveform. This value is guaranteed across the full operating temperature range (−65°C to +150°C) and defines the upper voltage limit imposed on protected circuitry during surge events.
Is DFLT30A-7 suitable for automotive applications?
DFLT30A-7 itself is not AEC-Q101 qualified; however, the pin- and form-compatible DFLT30AQ-7 variant is fully qualified to AEC-Q101, manufactured in IATF 16949-certified facilities, and supports PPAP documentation. For non-automotive industrial or telecom use, DFLT30A-7 meets all electrical and reliability requirements without automotive certification overhead.
How does the PowerDI123 package compare thermally to SMA or SMB packages?
PowerDI123 offers RθJA = 125°C/W on FR-4 with 1-inch² 2oz copper, outperforming SMA (RθJA ≈ 150°C/W) and matching SMB in thermal efficiency while occupying ~30% less board area. Its low RθJS = 6°C/W enables efficient heat transfer directly from die to solder joint, critical for repeated surge duty cycles.
What is the reverse leakage current at rated standoff voltage?
At VRWM = 30 V and TA = +25°C, the maximum reverse leakage current (IR) is 1.0 µA. This ultra-low leakage ensures minimal power loss in always-on 24V systems and prevents false triggering in high-impedance sensing circuits downstream of the TVS device.
DFLT30A-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Package/Case:
- POWERDI®123
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 30V
- Voltage - Breakdown (Min):
- 33.3V
- Voltage - Clamping (Max) @ Ipp:
- 48.4V
- Current - Peak Pulse (10/1000µs):
- 4.65A
- Power - Peak Pulse:
- 225W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- PowerDI™ 123
DFLT30A-7 FAQ
1.How can I place an order for DFLT30A-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for DFLT30A-7 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 DFLT30A-7 reliable?
The price and inventory of DFLT30A-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DFLT30A-7 is usually 5 days.
3.What payment methods are accepted for DFLT30A-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DFLT30A-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DFLT30A-7?
DFLT30A-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DFLT30A-7 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 DFLT30A-7?
For technical support, including DFLT30A-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DFLT30A-7 requirements.
6.How does Aetrix verify that DFLT30A-7 is sourced from the original manufacturer or authorized distributors?
All DFLT30A-7 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 DFLT30A-7 meets industry standards.
7.What is the process for return or replacement of DFLT30A-7?
All DFLT30A-7 units undergo pre-shipment inspection (PSI). If there is an issue with DFLT30A-7, 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 DFLT30A-7 part is unused and in its original packaging.
Return procedure for DFLT30A-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
DFLT30A-7 Tags
-
ESD9B5.0ST5G
onsemi
-
DESD3V3E1BL-7B
Diodes Incorporated
-
ESD5Z3.3T1G
onsemi
-
D5V0H1B2LP-7B
Diodes Incorporated
-
D5V0P1B2LP-7B
Diodes Incorporated
-
DESD5V0U1BA-7
Diodes Incorporated
-
ESD5Z5.0T1G
onsemi
-
DESD5V0U1BB-7
Diodes Incorporated
-
D12V0L1B2LP-7B
Diodes Incorporated
-
PESD2V0Y1BSFYL
Nexperia USA Inc.
-
DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
-
D5V0L1B2WS-7
Diodes Incorporated
Tech Hub
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…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
