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Vishay General Semiconductor - Diodes Division SMP30A-M3/85A
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- Part No.:
- SMP30A-M3/85A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-220AA
- Datasheet:
-
SMP30A-M3/85A.pdf
- Description:
- TVS DIODE 30VWM 48.4VC DO220AA
- Quantity:
- Payment:
- Shipping:
Inventory:9,521
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Product details
Overview
SMP30A-M3/85A from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) in the eSMP® Series, designed for clamping voltage transients on power and signal lines. It features a 30 V stand-off voltage (VWM), 33.3–36.8 V breakdown voltage (VBR), 400 W peak pulse power (10/1000 μs), 8.3 A peak pulse current (IPPM), and 48.4 V maximum clamping voltage (VC) - deployed in consumer, industrial, and telecom electronics for IC and MOSFET protection.
For engineers reviewing the SMP30A-M3/85A datasheet, SMP30A-M3/85A pinout, SMP30A-M3/85A application, or SMP30A-M3/85A equivalent, key selection criteria include unidirectional polarity, DO-220AA package compatibility, 1.0 mm profile height, MSL Level 1 rating, and 150 °C max junction temperature under surge conditions.
Technical Context
This TVS diode operates as a fast-acting shunt protector with sub-nanosecond response time, triggered when reverse voltage exceeds its 33.3–36.8 V breakdown threshold. Its low incremental surge resistance and 2.5 V forward voltage at 25 A support robust energy diversion during transient events.
Designed for PCB mounting on 5.0 mm × 5.0 mm copper pads per terminal, it delivers stable clamping performance across -55 °C to +150 °C operating range and meets JESD 201 Class 2 whisker resistance and UL 94 V-0 flammability requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 30 V - Maximum continuous reverse operating voltage before conduction begins |
| VBR min/max | 33.3 V / 36.8 V - Breakdown voltage range at 1.0 mA test current; defines turn-on threshold tolerance |
| VC @ IPPM | 48.4 V - Clamped voltage at 8.3 A peak pulse current; determines protected circuit's maximum overvoltage stress |
| PPPM | 400 W - Peak pulse power handling capability with 10/1000 μs waveform; defines transient energy absorption limit |
| IFSM | 40 A - Non-repetitive forward surge current rating (10 ms half-sine); supports inrush and fault-current resilience |
| TJ max | +150 °C - Maximum junction temperature; sets thermal design margin for high-power or high-ambient deployments |
Pinout & Package
Package: SMP (DO-220AA), surface-mount, unidirectional, cathode indicated by color band. Dimensions: 3.61 mm × 2.18 mm × 1.0 mm (L × W × H), with 2.54 mm lead pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point during forward conduction or transient clamping | Connected to lower-potential side of protected line; enables unidirectional clamping from cathode to anode |
| Cathode | Current exit point during reverse-biased clamping | Marked with color band; connected to higher-potential rail (e.g., VCC or signal line) to clamp transients toward ground |
Key Features
| Feature | Design Value |
|---|---|
| Low-profile packaging | 1.0 mm typical height enables use in space-constrained portable and ultra-thin electronics |
| MSL Level 1 rating | Compatible with standard SMT reflow profiles up to 260 °C peak, eliminating moisture sensitivity handling |
| Halogen-free & RoHS-compliant | M3 suffix confirms industrial-grade compliance with environmental and reliability standards |
| Fast transient response | Sub-nanosecond turn-on ensures protection of high-speed digital interfaces and sensitive analog front-ends |
Applications
| USB Power Delivery Protection | Automotive Body Control Module |
|---|---|
Use Scenario: Protecting USB-C PD port power lines from ESD and load-dump transients during hot-plug and adapter switching. IC Role / Device Role / Timing Role: Unidirectional shunt TVS placed between VBUS and GND to clamp surges above 30 V while preserving normal 5–20 V PD operation. Use Value: Limits clamping voltage to 48.4 V at 8.3 A, preventing damage to USB PD controllers and buck-boost ICs rated ≤ 50 V. | Use Scenario: Safeguarding LIN bus transceivers and microcontroller I/O pins against battery dump and inductive switching spikes in door modules and lighting controls. IC Role / Device Role / Timing Role: Standoff-rated TVS on 12 V supply rail and LIN signal line to suppress transients up to ISO 7637-2 Pulse 1/2a/5a levels. Use Value: Withstands 40 A surge current and maintains <1 μA leakage at 30 V, ensuring low-power sleep mode integrity and long-term reliability. |
| Industrial Sensor Signal Conditioning | Telecom Base Station DC Power Input |
Use Scenario: Shielding analog sensor outputs (e.g., 4–20 mA loop or RS-485) from field-induced surges in factory automation environments. IC Role / Device Role / Timing Role: Low-capacitance unidirectional TVS on differential signal pairs to avoid signal distortion while clamping common-mode transients. Use Value: 48.4 V clamping voltage prevents op-amp input saturation; 1.0 mm height allows placement directly at connector entry points. | Use Scenario: Front-end protection of 48 V DC input stage in remote radio units (RRUs) exposed to lightning-induced surges on outdoor power feeds. IC Role / Device Role / Timing Role: Primary surge suppression device mounted at power entry, coordinated with downstream MOVs and filters. Use Value: 400 W peak pulse power rating handles repetitive 10/1000 μs transients; DO-220AA package supports automated high-volume assembly. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMP30A-M3/84A | Same electrical specs and DO-220AA package; differs only in tape-and-reel packaging (3000 pcs vs. 10000 pcs on 7″ vs. 13″ reel) | Identical functional use; selected for smaller batch procurement or prototyping volume | Choose SMP30A-M3/84A when production lot sizes align with 3000-unit reels or legacy line setup requires 7″ diameter tape |
| SMAJ30A | Same VWM (30 V) and VC (48.4 V), but SMA package (DO-214AC); 400 W rating, 8.3 A IPPM, yet 2.2 mm height vs. 1.0 mm | Less suitable for ultra-low-profile designs; higher thermal resistance (RθJA = 40°C/W vs. 250°C/W) limits power dissipation density | Prefer SMAJ30A only if existing PCB layout uses SMA footprints or thermal management prioritizes larger pad area over height constraint |
Compared with SMP30A-M3/84A, the SMP30A-M3/85A offers identical protection performance with optimized logistics for high-volume manufacturing via 13″ tape; versus SMAJ30A, it delivers 55% lower profile and tighter board-level integration at the cost of reduced thermal mass - making it preferable for compact, thermally isolated layouts.
Availability
SMP30A-M3/85A is available at Aetrix Electronics and suitable for USB power delivery systems, automotive body control modules, industrial sensor interfaces, and telecom DC power inputs requiring stable component supply, halogen-free compliance, and automated SMT placement readiness.
Supply support for SMP30A-M3/85A 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
Vishay General Semiconductor is a global leader in discrete semiconductors, specializing in diodes, rectifiers, MOSFETs, and protection devices with emphasis on reliability, efficiency, and application-specific optimization.
The eSMP® Series, including SMP30A-M3/85A, was engineered for high-density surface-mount transient suppression in space-constrained, high-reliability applications - balancing low profile, high surge capability, and industrial-grade process consistency.
FAQ
What is the maximum clamping voltage of the SMP30A-M3/85A under peak pulse conditions?
The SMP30A-M3/85A has a maximum clamping voltage (VC) of 48.4 V when subjected to its rated peak pulse current (IPPM) of 8.3 A using a 10/1000 μs waveform. This value is measured at the device terminals under standardized test conditions and defines the upper voltage limit imposed on protected circuits during transient events. The SMP30A-M3/85A maintains this clamping performance across its specified operating temperature range.
Does the SMP30A-M3/85A meet RoHS and halogen-free requirements?
Yes, the SMP30A-M3/85A carries the M3 suffix, confirming it is halogen-free, RoHS-compliant, and qualified for industrial-grade applications per Vishay's material specifications. It satisfies JEDEC JESD201 Class 2 whisker resistance testing and complies with UL 94 V-0 flammability standards for its molding compound. These attributes are verified in the official Vishay document 88481 and apply specifically to the SMP30A-M3/85A variant.
What is the thermal resistance from junction to ambient for the SMP30A-M3/85A?
The SMP30A-M3/85A has a typical junction-to-ambient thermal resistance (RθJA) of 250 °C/W when mounted on 5.0 mm × 5.0 mm copper pads per terminal, as defined in Vishay's datasheet 88481. This value assumes the recommended PCB layout and is critical for estimating temperature rise under sustained surge duty cycles. Junction-to-lead resistance (RθJL) is 50 °C/W, supporting localized thermal relief through copper pour connections.
Can the SMP30A-M3/85A be used in bidirectional configurations?
No, the SMP30A-M3/85A is a unidirectional TVS diode, as confirmed by its polarity marking (cathode band) and electrical specifications - including asymmetric VBR/VWM ratings and absence of bidirectional parameters in the datasheet. For bidirectional protection, Vishay offers separate part numbers such as SMBJ30CA; the SMP30A-M3/85A must be oriented correctly in-circuit with cathode toward the higher-potential node.
What is the peak pulse current rating for the SMP30A-M3/85A?
The SMP30A-M3/85A is rated for a peak pulse current (IPPM) of 8.3 A under a 10/1000 μs waveform condition, derived from its 400 W peak pulse power rating and 48.4 V clamping voltage (IPPM = PPPM / VC). This rating assumes proper PCB thermal design with 5.0 mm × 5.0 mm copper pads per terminal and applies at TA = 25 °C, with derating required at elevated ambient temperatures per Figure 2 in datasheet 88481.
SMP30A-M3/85A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-220AA
- Series:
- TransZorb®, eSMP®
- 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):
- 8.3A
- Power - Peak Pulse:
- 400W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-220AA (SMP)
SMP30A-M3/85A FAQ
1.How can I place an order for SMP30A-M3/85A through Aetrix?
Please submit a Request for Quotation (RFQ) for SMP30A-M3/85A 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 SMP30A-M3/85A reliable?
The price and inventory of SMP30A-M3/85A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMP30A-M3/85A is usually 5 days.
3.What payment methods are accepted for SMP30A-M3/85A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMP30A-M3/85A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMP30A-M3/85A?
SMP30A-M3/85A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMP30A-M3/85A 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 SMP30A-M3/85A?
For technical support, including SMP30A-M3/85A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMP30A-M3/85A requirements.
6.How does Aetrix verify that SMP30A-M3/85A is sourced from the original manufacturer or authorized distributors?
All SMP30A-M3/85A 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 SMP30A-M3/85A meets industry standards.
7.What is the process for return or replacement of SMP30A-M3/85A?
All SMP30A-M3/85A units undergo pre-shipment inspection (PSI). If there is an issue with SMP30A-M3/85A, 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 SMP30A-M3/85A part is unused and in its original packaging.
Return procedure for SMP30A-M3/85A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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