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Vishay General Semiconductor - Diodes Division SMB10J28HE3/52
- Part No.:
- SMB10J28HE3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMB10J28HE3/52.pdf
- Description:
- TVS DIODE 28VWM 50VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:5,772
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Product details
Overview
SMB10J28HE3/52 from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in DO-214AA (SMB) package, designed for high-energy surge protection on power and signal lines. It features a 28 V stand-off voltage (VWM), 31.1–34.4 V breakdown voltage (VBR) at 1 mA, 45.4 V clamping voltage (VC) at 22.0 A peak pulse current (IPPM), and 1000 W peak pulse power (PPPM) with 10/1000 µs waveform. It is AEC-Q101 qualified and used in automotive power rail protection.
For engineers reviewing the SMB10J28HE3/52 datasheet, SMB10J28HE3/52 pinout, SMB10J28HE3/52 application, or SMB10J28HE3/52 equivalent, key selection criteria include clamping performance under 22 A surge, unidirectional polarity for DC-biased rails, RoHS-compliant AEC-Q101 qualification, thermal resistance (RθJA = 72 °C/W), and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector: when reverse voltage exceeds VBR, it avalanches to divert transient energy away from downstream circuitry. Its glass-passivated junction ensures stable breakdown and low leakage (<1.0 µA at VWM).
Designed for 10/1000 µs surge waveforms per ANSI/IEEE C62.35, it delivers 1000 W peak pulse power with low incremental surge resistance and fast response time (<1 ns). The DO-214AA package supports MSL level 1 reflow (260 °C peak) and meets UL 94 V-0 flammability rating.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 28 V - maximum continuous reverse operating voltage before clamping begins; defines safe DC bias margin. |
| VBR (min/max) | 31.1 V / 34.4 V at 1 mA - guaranteed avalanche onset range; ensures consistent turn-on across production lots. |
| VC @ IPPM | 45.4 V at 22.0 A - clamped voltage during full-rated 10/1000 µs surge; determines protected circuit's maximum transient stress. |
| PPPM | 1000 W - peak transient power handling capability; enables robust protection against IEC 61000-4-5 Level 4 surges. |
| IR @ VWM | <1.0 µA - ultra-low reverse leakage at rated stand-off; minimizes standby power loss in battery-critical systems. |
| TJ max | 150 °C - maximum junction temperature; supports operation in under-hood automotive environments. |
| RθJA | 72 °C/W - thermal resistance junction-to-ambient on standard 0.2" × 0.2" pads; informs derating above 25 °C ambient. |
Pinout & Package
Package: DO-214AA (SMB), surface-mount, unidirectional configuration with cathode band marking on one end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / surge return path | Connected to lower-potential side (e.g., ground or return rail); completes shunt path during avalanche. |
| Cathode | Reverse-biased input / protected line connection | Connected to line being protected (e.g., 24 V supply); avalanche initiates here when voltage exceeds VBR. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing - required for engine control, body electronics, and ADAS modules. |
| Glass-passivated junction | Ensures stable VBR over lifetime and immunity to moisture-induced parameter drift - critical for long-life industrial deployments. |
| MSL Level 1 rating | Supports lead-free reflow up to 260 °C peak without popcorn cracking - eliminates pre-bake requirements in high-volume SMT lines. |
| Low clamping ratio (VC/VBR ≈ 1.45) | Minimizes overvoltage exposure during surge events - protects 30 V-rated MOSFETs and CAN transceivers without additional series impedance. |
| Matte tin-plated leads | Guarantees solderability per J-STD-002 and whisker resistance per JESD 201 Class 2 - ensures joint integrity in vibration-prone automotive assemblies. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Line Protection |
|---|---|
|
Use Scenario: Protecting 24 V supply inputs in engine control units (ECUs) against load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Shunt-type transient suppressor placed directly across input rail and chassis ground. Use Value: Clamps 1000 W surges to ≤45.4 V within nanoseconds, preventing damage to downstream DC/DC controllers and microcontrollers. |
Use Scenario: Safeguarding analog outputs of pressure/temperature sensors in factory automation PLC I/O modules. IC Role / Device Role / Timing Role: Unidirectional TVS on 0–10 V or 4–20 mA output lines exposed to relay switching noise. Use Value: Limits induced transients to <45.4 V while maintaining <1 µA leakage - preserves sensor accuracy and ADC reference stability. |
| Telecom DC Power Feeds | Consumer Power Adapter Inputs |
|
Use Scenario: Input-stage protection on -48 V telecom rectifier outputs feeding base station RF amplifiers. IC Role / Device Role / Timing Role: Reverse-connected TVS on negative rail to clamp positive-going transients from lightning-induced coupling. Use Value: Withstands repeated 10/1000 µs surges up to 22 A while holding clamping voltage below amplifier absolute maximum ratings. |
Use Scenario: Secondary-side surge suppression on 19 V laptop adapter outputs subject to user-handling ESD and cable disconnect spikes. IC Role / Device Role / Timing Role: Unidirectional clamp between VOUT and GND, positioned after DC/DC post-regulator. Use Value: Provides 1000 W surge capacity with 28 V stand-off - avoids false triggering during normal 19 V operation while blocking >31 V faults. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ28A-E3/52 | Same DO-214AA package and 28 V VWM, but not AEC-Q101 qualified; lower surge rating (600 W vs. 1000 W PPPM). | Restricted to commercial/industrial use; unsuitable for automotive under-hood deployment. | Select only if AEC-Q101 compliance and 1000 W surge capacity are not required. |
| 1.5SMC28AHE3/A | Higher-power SMC package (1500 W PPPM), same 28 V VWM, AEC-Q101 qualified, but larger footprint (7.11 mm × 6.22 mm vs. 4.57 mm × 3.94 mm). | Used where higher surge margin is needed and PCB space allows larger package. | Choose when system-level surge test requirements exceed 1000 W or thermal dissipation demands lower RθJA. |
Compared with SMBJ28A-E3/52, SMB10J28HE3/52 delivers 67% higher peak pulse power and automotive qualification; versus 1.5SMC28AHE3/A, it offers identical reliability in a 40% smaller footprint - optimizing board area without sacrificing surge robustness.
Availability
SMB10J28HE3/52 is available at Aetrix Electronics and suitable for automotive ECUs, industrial sensor interfaces, telecom power feeds, and consumer adapter designs requiring stable component supply and AEC-Q101 assurance.
Supply support for SMB10J28HE3/52 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, MOSFETs, optoelectronics, and passive components with emphasis on reliability and application-specific performance.
The SMB10JxxA family targets high-energy transient suppression in harsh environments; engineered for automotive, industrial, and telecom systems where failure due to voltage surges must be eliminated.
FAQ
What is the clamping voltage of SMB10J28HE3/52 at its rated peak pulse current?
The SMB10J28HE3/52 has a maximum clamping voltage (VC) of 45.4 V when subjected to its rated 22.0 A peak pulse current (IPPM) with a 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and guarantees that downstream components see no more than 45.4 V during full-surge conditions, making SMB10J28HE3/52 suitable for protecting 30 V-rated ICs and MOSFETs.
Is SMB10J28HE3/52 suitable for automotive applications?
Yes, SMB10J28HE3/52 is AEC-Q101 qualified and explicitly rated for automotive use. Its construction includes glass-passivated junction, matte tin-plated leads meeting JESD 201 Class 2 whisker resistance, and operation up to 150 °C junction temperature - fulfilling requirements for engine control, body electronics, and ADAS subsystems. The HE3 suffix confirms this qualification.
What does the "HE3/52" suffix mean in SMB10J28HE3/52?
In SMB10J28HE3/52, "HE3" denotes RoHS-compliant construction with AEC-Q101 qualification and JESD 201 Class 2 whisker resistance; "52" specifies packaging in 7" diameter plastic tape and reel with 750 units per reel. This ordering code ensures traceable, automotive-grade supply chain compliance and SMT-ready delivery format for SMB10J28HE3/52.
How does SMB10J28HE3/52 differ from SMBJ28A-E3/52?
SMB10J28HE3/52 provides 1000 W peak pulse power (PPPM) and AEC-Q101 qualification, whereas SMBJ28A-E3/52 offers only 600 W PPPM and commercial-grade reliability. Both share DO-214AA packaging and 28 V VWM, but SMB10J28HE3/52 is engineered for automotive under-hood use, while SMBJ28A-E3/52 is limited to less demanding environments.
What is the thermal resistance of SMB10J28HE3/52, and how does it affect layout?
SMB10J28HE3/52 has a typical junction-to-ambient thermal resistance (RθJA) of 72 °C/W when mounted on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. This value requires PCB designers to allocate adequate copper area for heat dissipation during repetitive surge events; reducing pad size increases RθJA and necessitates derating per Figure 2 in the Vishay datasheet 88422.
SMB10J28HE3/52 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 28V
- Voltage - Breakdown (Min):
- 31.1V
- Voltage - Clamping (Max) @ Ipp:
- 50V
- Current - Peak Pulse (10/1000µs):
- 20A
- Power - Peak Pulse:
- 1000W (1kW)
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
SMB10J28HE3/52 FAQ
1.How can I place an order for SMB10J28HE3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMB10J28HE3/52 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 SMB10J28HE3/52 reliable?
The price and inventory of SMB10J28HE3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMB10J28HE3/52 is usually 5 days.
3.What payment methods are accepted for SMB10J28HE3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMB10J28HE3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMB10J28HE3/52?
SMB10J28HE3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMB10J28HE3/52 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 SMB10J28HE3/52?
For technical support, including SMB10J28HE3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMB10J28HE3/52 requirements.
6.How does Aetrix verify that SMB10J28HE3/52 is sourced from the original manufacturer or authorized distributors?
All SMB10J28HE3/52 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 SMB10J28HE3/52 meets industry standards.
7.What is the process for return or replacement of SMB10J28HE3/52?
All SMB10J28HE3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMB10J28HE3/52, 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 SMB10J28HE3/52 part is unused and in its original packaging.
Return procedure for SMB10J28HE3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMB10J28HE3/52 Tags
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