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Diodes Incorporated DTVS20SP4UR-7
- Part No.:
- DTVS20SP4UR-7
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- SOD-123F
- Datasheet:
-
DTVS20SP4UR-7.pdf
- Description:
- TVS DIODE 20VWM 32.4VC SOD123F
- Quantity:
- Payment:
- Shipping:
Inventory:7,297
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Product details
Overview
DTVS20SP4UR-7 from Diodes Incorporated is a 400W surface-mount transient voltage suppressor (TVS) diode designed for bidirectional overvoltage clamping in low-voltage DC power rails and battery-contact interfaces. It features a 20V reverse standoff voltage, 22.2V minimum breakdown voltage at 1mA, 32.4V maximum clamping voltage at 12.3A peak pulse current, and IEC61000-4-2 ±30kV ESD protection - enabling robust surge immunity in compact portable power systems.
For engineers reviewing the DTVS20SP4UR-7 datasheet, DTVS20SP4UR-7 pinout, DTVS20SP4UR-7 application, or DTVS20SP4UR-7 equivalent, key selection criteria include clamping voltage margin vs. protected IC VMAX, thermal derating on FR-4 pads, SOD123F footprint compatibility, and cathode-bar polarity alignment in high-density PCB layouts.
Technical Context
This TVS operates as a silicon avalanche diode with symmetrical bidirectional clamping behavior, triggered when transient voltage exceeds its 22.2–24.5V breakdown range. Its 10/1000µs waveform rating ensures reliable suppression of lightning-induced surges and inductive switching spikes in automotive and industrial power nodes.
The device uses a planar junction structure in a SOD123F molded plastic case with matte tin-plated copper alloy leads, delivering 330°C/W junction-to-ambient thermal resistance on standard 1"×1" FR-4 board and supporting continuous power dissipation up to 1.5W at +25°C ambient.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 400W (10µs × 1000µs waveform); sustains single-event transients without degradation |
| Reverse Standoff Voltage | 20V; maximum continuous DC voltage before leakage rises above 1µA |
| Breakdown Voltage | 22.2V min @ 1mA; defines precise conduction onset under surge conditions |
| Clamping Voltage | 32.4V max @ 12.3A IPP; limits voltage seen by downstream circuitry during worst-case surge |
| ESD Rating | ±30kV air/contact per IEC61000-4-2; eliminates need for external ESD diodes in handheld battery interfaces |
| Thermal Resistance | 330°C/W RθJA; requires minimal copper area for thermal management in space-constrained designs |
| Package | SOD123F; 2.7mm × 1.8mm footprint with cathode bar marking; compatible with standard pick-and-place and reflow |
Pinout & Package
Package: SOD123F - surface-mount plastic case with cathode-bar polarity marking, 0.018g mass, UL 94V-0 flammability rating, and moisture sensitivity level 1 (J-STD-020).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side connection point | Connected to GND or lower-potential rail; forms clamping path with cathode during negative transients |
| Cathode | High-side connection point | Marked by bar; connected to protected line (e.g., battery+, VBUS); conducts during positive overvoltage events |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Protects both polarities of DC lines without external polarity coordination |
| ±30kV ESD immunity | Meets highest IEC61000-4-2 contact discharge requirement - eliminates secondary ESD components |
| Low clamping ratio (VC/VBR ≈ 1.45) | Minimizes voltage overshoot relative to breakdown threshold, improving system-level surge margin |
| Lead-free & halogen-free | Complies with RoHS 3 and "Green" definitions (<900ppm Br/Cl, <1000ppm Sb); supports eco-compliant manufacturing |
| 1.5W steady-state dissipation | Enables use in thermally constrained locations where sustained leakage or bias currents exist |
Applications
| Power Management Circuits | Battery Contact Protection |
|---|---|
Use Scenario: Input stage of USB-C PD chargers and multi-cell Li-ion battery management ICs exposed to hot-plug and load-dump events. IC Role / Device Role / Timing Role: Primary clamping element placed between input connector and DC-DC converter input capacitor. Use Value: Limits transient voltage to ≤32.4V, preventing damage to 30V-rated input MOSFETs and gate drivers. | Use Scenario: Direct protection of spring-loaded battery terminals in medical wearables and IoT trackers subject to repeated insertion/removal. IC Role / Device Role / Timing Role: First-line defense against electrostatic discharge generated during mechanical mating/unmating. Use Value: Withstands ±30kV contact discharge without parametric shift, preserving long-term reliability of battery fuel gauges. |
| Automotive Body Electronics | Industrial Sensor Interface Modules |
Use Scenario: 12V supply rail protection in door module ECUs where load-dump pulses exceed 40V. IC Role / Device Role / Timing Role: Parallel-connected TVS across fuse output, clamping within 1ns of overvoltage onset. Use Value: Maintains clamping voltage below 35V threshold of CAN transceivers and microcontroller I/O pins. | Use Scenario: 24V fieldbus node protection in factory automation sensors subjected to inductive kickback from solenoid drivers. IC Role / Device Role / Timing Role: Shunt device across power input to absorb 400W surge energy without latch-up or thermal runaway. Use Value: Survives repetitive 10/1000µs surges up to 12.3A while maintaining stable leakage <1µA at 20V. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ20A | Unidirectional; 32.4V VC @ 12.3A; same SOD123 package but no cathode bar marking | Requires explicit polarity placement; unsuitable for AC-coupled or floating-rail protection | Select only when protecting unidirectional rails with known polarity and no ESD reversal risk |
| SMCJ20A | Higher 1500W rating; DO-214AB package (7.1mm × 6.2mm); 34.0V VC @ 43.5A | Overqualified for space-constrained battery contacts; excessive footprint and thermal mass | Prefer for high-energy industrial mains inputs where PCB area permits larger package |
Compared with SMAJ20A and SMCJ20A, DTVS20SP4UR-7 uniquely balances ultra-compact SOD123F size, bidirectional operation, and certified ±30kV ESD performance - making it optimal for battery-powered edge devices where board area, polarity uncertainty, and human-handling ESD are co-constrained.
Availability
DTVS20SP4UR-7 is available at Aetrix Electronics and suitable for power management circuits, battery contact protection, and automotive body electronics requiring stable component supply across production lifecycles.
Supply support for DTVS20SP4UR-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 manufacturer of discrete semiconductors and analog ICs, specializing in high-reliability protection, signal integrity, and power management solutions for industrial, automotive, and consumer markets.
DTVS20SP4UR-7 belongs to Diodes' TVS Diode family engineered specifically for high-density, low-voltage DC transient suppression - emphasizing ESD robustness, tight parameter distribution, and compatibility with automated assembly processes.
FAQ
What is the polarity configuration of DTVS20SP4UR-7?
DTVS20SP4UR-7 is a bidirectional TVS diode with symmetrical clamping characteristics. The cathode bar marking indicates the cathode terminal; the device conducts equally for positive transients on the cathode side and negative transients on the anode side - eliminating polarity-dependent layout constraints in DC power rails.
Can DTVS20SP4UR-7 replace a unidirectional TVS in an existing design?
Yes, if the original unidirectional TVS protects a fixed-polarity rail and the circuit does not experience reverse-voltage transients. However, DTVS20SP4UR-7's bidirectional behavior may alter leakage paths or biasing in precision analog sections - verify quiescent current and reverse-bias behavior under actual operating conditions before substitution.
How does the SOD123F package affect thermal performance?
The SOD123F package delivers 330°C/W junction-to-ambient thermal resistance on a standard 1"×1" FR-4 board with 2 oz. copper. For continuous operation near 1.5W, localized thermal relief (e.g., thermal vias under cathode pad) is recommended. Derating begins above +25°C ambient per Figure 1 in DS41363 Rev. 3-2.
Is DTVS20SP4UR-7 compliant with AEC-Q200 for automotive use?
No - DTVS20SP4UR-7 is not AEC-Q200 qualified. While its -55°C to +150°C operating temperature range meets automotive ambient requirements, it lacks the stress-test validation (e.g., temperature cycling, humidity bias) required for AEC-Q200 Grade 2 or 3 certification. Use only in non-safety-critical automotive body modules unless validated per customer-specific qualification protocols.
DTVS20SP4UR-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Package/Case:
- SOD-123F
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 20V
- Voltage - Breakdown (Min):
- 22.2V
- Voltage - Clamping (Max) @ Ipp:
- 32.4V
- Current - Peak Pulse (10/1000µs):
- 12.3A (8/20µs)
- Power - Peak Pulse:
- 400W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-123F
DTVS20SP4UR-7 FAQ
1.How can I place an order for DTVS20SP4UR-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for DTVS20SP4UR-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 DTVS20SP4UR-7 reliable?
The price and inventory of DTVS20SP4UR-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DTVS20SP4UR-7 is usually 5 days.
3.What payment methods are accepted for DTVS20SP4UR-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DTVS20SP4UR-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DTVS20SP4UR-7?
DTVS20SP4UR-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DTVS20SP4UR-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 DTVS20SP4UR-7?
For technical support, including DTVS20SP4UR-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DTVS20SP4UR-7 requirements.
6.How does Aetrix verify that DTVS20SP4UR-7 is sourced from the original manufacturer or authorized distributors?
All DTVS20SP4UR-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 DTVS20SP4UR-7 meets industry standards.
7.What is the process for return or replacement of DTVS20SP4UR-7?
All DTVS20SP4UR-7 units undergo pre-shipment inspection (PSI). If there is an issue with DTVS20SP4UR-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 DTVS20SP4UR-7 part is unused and in its original packaging.
Return procedure for DTVS20SP4UR-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
DTVS20SP4UR-7 Tags
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ESD9B5.0ST5G
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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onsemi
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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