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Vishay General Semiconductor - Diodes Division SMB10J33AHM3_B/H
- Part No.:
- SMB10J33AHM3_B/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMB10J33AHM3_B/H.pdf
- Description:
- 1KW,33V 5%,UNIDIR,SMB TVS
- Quantity:
- Payment:
- Shipping:
Inventory:3,860
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Product details
Overview
SMB10J33AHM3_B/H from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, designed for high-energy surge protection with 1000 W peak pulse power (10/1000 µs), 33 V stand-off voltage (VWM), and 53.3 V clamping voltage (VC) at 18.8 A peak pulse current. It is AEC-Q101 qualified and halogen-free, targeting automotive power line and sensor interface protection.
For engineers reviewing the SMB10J33AHM3_B/H datasheet, SMB10J33AHM3_B/H pinout, SMB10J33AHM3_B/H application, or SMB10J33AHM3_B/H equivalent, key selection criteria include clamping performance under 10/1000 µs surges, AEC-Q101 qualification status, unidirectional polarity, 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 uses a glass-passivated silicon junction to achieve fast response time (<1 ps) and low incremental surge resistance, enabling effective suppression of ESD, lightning-induced transients, and inductive switching spikes. Its unidirectional configuration provides forward conduction path while blocking reverse leakage below 1.0 µA at 33 V.
The device operates across -55 °C to +150 °C junction temperature range and meets MSL Level 1 per J-STD-020 with 260 °C reflow peak. Thermal design relies on RθJL = 20 °C/W (junction-to-lead) and recommended 0.2" × 0.2" copper pad layout for optimal power dissipation during 1000 W transient events.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 33 V - Maximum continuous reverse operating voltage before clamping begins; defines safe working margin for 24 V automotive systems. |
| VBR (min/max) | 36.7 V / 40.6 V - Breakdown voltage range at 1 mA test current; ensures reliable turn-on above system overvoltage thresholds. |
| VC @ IPPM | 53.3 V - Clamping voltage at 18.8 A peak pulse current; limits downstream IC stress during 10/1000 µs transients. |
| PPPM | 1000 W - Peak pulse power rating (10/1000 µs); supports robust protection against ISO 7637-2 Pulse 1/2a/5a in automotive environments. |
| IFSM | 100 A - Non-repetitive forward surge current (8.3 ms half-sine); withstands load-dump events without failure. |
| TJ max | +150 °C - Maximum junction temperature; enables operation in under-hood automotive locations with minimal derating. |
| RθJA | 72 °C/W - Junction-to-ambient thermal resistance on standard PCB pads; informs heatsinking requirements for sustained surge duty cycles. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, low-profile case with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102. Cathode indicated by color band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry (unidirectional) | Connects to protected line side; conducts during positive transients when cathode is biased higher than anode. |
| Cathode | Reverse-biased terminal (marked) | Connects to ground or lower-potential rail; defines clamping reference and polarity-sensitive protection direction. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per stress test plan. |
| Glass passivated junction | Ensures stable VBR tolerance and long-term parameter stability under humidity and thermal stress. |
| Halogen-free & RoHS-compliant (HM3 suffix) | Meets automotive environmental compliance requirements and eliminates corrosive halogen emissions during reflow or failure. |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and standard 260 °C reflow without baking, simplifying SMT manufacturing flow. |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients, improving protection margin for sensitive 3.3 V/5 V logic interfaces. |
Applications
| Automotive Power Line Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 24 V supply rails in engine control units (ECUs) against ISO 7637-2 load dump and inductive switching transients. IC Role / Device Role / Timing Role: Unidirectional TVS clamps reverse-polarity and overvoltage surges before they reach DC-DC converters and microcontrollers. Use Value: Withstands 100 A surge (8.3 ms) and clamps to ≤53.3 V, preserving downstream 36 V-rated input stages and meeting OEM immunity requirements. | Use Scenario: Shielding analog sensor outputs (e.g., pressure, temperature) in factory automation systems from cable discharge and EFT bursts. IC Role / Device Role / Timing Role: Fast-response TVS shunts sub-100 ns ESD events on signal lines tied to precision ADC front-ends. Use Value: Low clamping voltage (53.3 V) and <1 µA leakage at 33 V prevent signal distortion and offset drift in 16-bit measurement circuits. |
| Telecom Power Input Protection | Consumer USB Power Delivery Port |
Use Scenario: Safeguarding 48 V PoE-powered equipment inputs against lightning-induced surges on outdoor Ethernet cables. IC Role / Device Role / Timing Role: Primary-level TVS absorbs up to 1000 W (10/1000 µs) energy before secondary protection triggers. Use Value: High PPPM and low Rsurge reduce let-through voltage to <60 V, protecting IEEE 802.3bt PD controllers rated to 57 V. | Use Scenario: Adding robust overvoltage defense to USB-C power delivery ports exposed to adapter fault conditions or hot-plug transients. IC Role / Device Role / Timing Role: Standoff voltage (33 V) sits safely below 20 V PD negotiation range but clamps >36 V faults before USB controller damage. Use Value: AEC-Q101 qualification ensures reliability in portable devices subject to mechanical shock and thermal cycling during field use. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ33AHE3_A/H | Same VWM (33 V), VC (53.3 V), and PPPM (1000 W), but RoHS-compliant commercial grade (not AEC-Q101 or halogen-free). | Lacks automotive qualification and halogen-free certification; suitable for industrial/commercial designs without automotive compliance mandates. | Select when AEC-Q101 and halogen-free are not required, and cost optimization is prioritized. |
| SMCJ33A-HM3 | Higher PPPM (1500 W), same VWM/VC, but larger SMC (DO-214AB) package (7.11 mm × 6.22 mm vs. SMB's 4.57 mm × 3.94 mm). | Requires PCB layout change due to larger footprint; preferred where higher surge margin justifies board space penalty. | Choose for enhanced surge endurance in harsh environments where board area permits larger package. |
Compared with SMBJ33AHE3_A/H and SMCJ33A-HM3, SMB10J33AHM3_B/H uniquely combines AEC-Q101 qualification, halogen-free construction, and SMB footprint-enabling drop-in compliance for automotive Tier-1 suppliers without redesigning layout or sacrificing environmental specs.
Availability
SMB10J33AHM3_B/H is available at Aetrix Electronics and suitable for automotive electronics, industrial sensor systems, and telecom power input protection requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for SMB10J33AHM3_B/H 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, power density, and automotive-grade validation.
The SMB10J series belongs to Vishay's TRANSZORB® TVS platform, engineered specifically for high-power-density, surface-mount surge protection in space-constrained automotive and industrial applications demanding AEC-Q101 compliance.
FAQ
What is the clamping voltage of SMB10J33AHM3_B/H at its rated peak pulse current?
The SMB10J33AHM3_B/H has a maximum clamping voltage (VC) of 53.3 V at 18.8 A peak pulse current (IPPM) under 10/1000 µs waveform conditions. This value is measured per ANSI/IEEE C62.35 standards and ensures predictable overvoltage limiting for downstream circuitry. The SMB10J33AHM3_B/H maintains this clamping performance across its full operating temperature range (-55 °C to +150 °C).
Is SMB10J33AHM3_B/H qualified for automotive applications?
Yes, SMB10J33AHM3_B/H is AEC-Q101 qualified, as confirmed by Vishay's documentation and ordering code suffix "HM3" (halogen-free, RoHS-compliant, AEC-Q101). It undergoes stress testing including temperature cycling, highly accelerated life testing (HALT), and ESD per the AEC-Q101 standard. The SMB10J33AHM3_B/H is intended for use in engine control units, body electronics, and ADAS modules where automotive-grade reliability is mandatory.
What does the "HM3" suffix mean in SMB10J33AHM3_B/H?
The "HM3" suffix in SMB10J33AHM3_B/H indicates halogen-free, RoHS-compliant construction with AEC-Q101 qualification. It distinguishes the part from commercial-grade variants (e.g., "E3" or "M3") and confirms compliance with automotive environmental and reliability standards. The "_B/H" denotes packaging: 7" tape-and-reel, 750 units per reel. The SMB10J33AHM3_B/H meets JESD 201 Class 2 whisker resistance and MSL Level 1 handling requirements.
What is the standoff voltage (VWM) and why is it important for SMB10J33AHM3_B/H?
The standoff voltage (VWM) of SMB10J33AHM3_B/H is 33 V - the maximum DC or continuous reverse voltage the device can block without entering breakdown. This parameter ensures the SMB10J33AHM3_B/H remains non-conductive during normal operation in 24 V automotive systems, preventing leakage current and power loss while allowing clean turn-on only during overvoltage events exceeding ~36.7 V (VBR min).
Can SMB10J33AHM3_B/H be used in bidirectional configurations?
No, SMB10J33AHM3_B/H is a unidirectional TVS diode, as indicated by its part number structure ("J33A", not "J33CA") and electrical specifications (includes IFSM = 100 A, which applies only to unidirectional devices). Bidirectional variants like SMB8J33CA exist in the same family but differ in marking, test current polarity, and absence of forward surge rating. Using SMB10J33AHM3_B/H in bidirectional circuits would leave one polarity unprotected.
SMB10J33AHM3_B/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- TransZorb®
- Packaging:
- Bulk
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 33V
- Voltage - Breakdown (Min):
- 36.7V
- Voltage - Clamping (Max) @ Ipp:
- 53.3V
- Current - Peak Pulse (10/1000µs):
- 18.8A
- Power - Peak Pulse:
- 1000W (1kW)
- Power Line Protection:
- No
- Applications:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
SMB10J33AHM3_B/H FAQ
1.How can I place an order for SMB10J33AHM3_B/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMB10J33AHM3_B/H 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 SMB10J33AHM3_B/H reliable?
The price and inventory of SMB10J33AHM3_B/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMB10J33AHM3_B/H is usually 5 days.
3.What payment methods are accepted for SMB10J33AHM3_B/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMB10J33AHM3_B/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMB10J33AHM3_B/H?
SMB10J33AHM3_B/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMB10J33AHM3_B/H 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 SMB10J33AHM3_B/H?
For technical support, including SMB10J33AHM3_B/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMB10J33AHM3_B/H requirements.
6.How does Aetrix verify that SMB10J33AHM3_B/H is sourced from the original manufacturer or authorized distributors?
All SMB10J33AHM3_B/H 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 SMB10J33AHM3_B/H meets industry standards.
7.What is the process for return or replacement of SMB10J33AHM3_B/H?
All SMB10J33AHM3_B/H units undergo pre-shipment inspection (PSI). If there is an issue with SMB10J33AHM3_B/H, 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 SMB10J33AHM3_B/H part is unused and in its original packaging.
Return procedure for SMB10J33AHM3_B/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMB10J33AHM3_B/H Tags
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