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Vishay General Semiconductor - Diodes Division SMB10J33AHM3_A/H
- Part No.:
- SMB10J33AHM3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMB10J33AHM3_A/H.pdf
- Description:
- TVS DIODE 33VWM 53.3VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:5,439
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Product details
Overview
SMB10J33AHM3_A/H from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, designed for high-energy surge protection on DC power rails and signal lines. It features a 33 V standoff voltage (VWM), 36.7–40.6 V breakdown voltage (VBR), 53.3 V clamping voltage (VC) at 18.8 A peak pulse current (IPPM), and 1000 W peak pulse power (PPPM) with 10/1000 µs waveform - deployed in automotive ECUs and industrial sensor interfaces.
For engineers reviewing the SMB10J33AHM3_A/H datasheet, SMB10J33AHM3_A/H pinout, SMB10J33AHM3_A/H application, or SMB10J33AHM3_A/H equivalent, key selection criteria include AEC-Q101 qualification, unidirectional polarity with cathode band marking, low incremental surge resistance, and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
This TVS diode operates as a clamping device that diverts transient energy to ground when reverse voltage exceeds its breakdown threshold. Its glass-passivated junction ensures stable VBR tolerance and fast response (<1 ns), while the SMB package provides thermal resistance of 20 °C/W (junction-to-lead) and meets MSL level 1 (260 °C peak reflow).
The SMB10J33AHM3_A/H is rated for -55 °C to +150 °C operating junction temperature, supports 100 A non-repetitive forward surge current (IFSM), and exhibits ≤1.0 µA reverse leakage at 33 V (VWM), making it suitable for robust overvoltage protection in harsh environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 33 V - maximum continuous reverse operating voltage before clamping begins |
| VBR min/max | 36.7 V / 40.6 V - breakdown occurs within this range at 1 mA test current, defining turn-on threshold |
| VC @ IPPM | 53.3 V - clamped voltage seen by protected circuit during 18.8 A 10/1000 µs surge |
| PPPM | 1000 W - peak transient power it can absorb without failure under standard waveform |
| IFSM | 100 A - withstands single 8.3 ms half-sine surge, critical for load-dump immunity |
| TJ max | +150 °C - enables use in under-hood automotive locations and high-ambient industrial settings |
| Polarity | Unidirectional - cathode marked with band; blocks forward conduction, clamps reverse transients |
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; polarity indicated by cathode band on one end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential side (e.g., GND or return path); conducts only during forward surge events |
| Cathode | Clamping terminal | Marked with color band; connected to protected line (e.g., 33 V rail); conducts when reverse voltage exceeds VBR |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control, body electronics, and ADAS sensor interfaces |
| Halogen-free & RoHS-compliant | HM3 suffix confirms compliance with environmental standards and JEDEC JESD201 Class 2 whisker resistance |
| Low incremental surge resistance | Enables tighter clamping (VC − VBR = 16.6 V), minimizing stress on downstream ICs like MCUs and CAN transceivers |
| MSL Level 1 rating | Allows unlimited floor life and peak reflow up to 260 °C - compatible with standard lead-free SMT processes |
| Glass passivated junction | Ensures long-term stability of VBR and leakage performance across temperature and lifetime cycling |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 33 V supply rail in engine control unit against ISO 7637-2 load dump and jump-start surges. IC Role / Device Role / Timing Role: Unidirectional TVS clamping device placed between rail and chassis ground. Use Value: Limits transient voltage to ≤53.3 V during 1000 W surges, preventing damage to 33 V-rated microcontrollers and power management ICs. | Use Scenario: Safeguarding analog output line (e.g., 4–20 mA transmitter) from ESD and inductive switching noise in factory automation. IC Role / Device Role / Timing Role: Standoff-clamp protector on signal path, referenced to system ground. Use Value: Clamps 8 kV contact ESD events to <55 V within <1 ns, preserving ADC input integrity and measurement accuracy. |
| Telecom DC Power Input Protection | Consumer Device USB Power Line Protection |
Use Scenario: Securing 33 V DC input of remote radio head against lightning-induced surges on outdoor cabling. IC Role / Device Role / Timing Role: Primary surge suppression stage upstream of DC-DC converter. Use Value: Absorbs 10/1000 µs surges up to 1000 W without degradation, maintaining uptime in base station power systems. | Use Scenario: Adding secondary overvoltage protection on USB PD 33 V auxiliary power path in smart home hubs. IC Role / Device Role / Timing Role: Back-to-back clamping element on VBUS line with series fuse. Use Value: Prevents latch-up in USB controller ICs during hot-plug transients by limiting excursion to 53.3 V. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMB10J33AHE3_A/H | RoHS-compliant but not halogen-free; lacks HM3 suffix; same electrical specs and AEC-Q101 qualification | Approved for commercial-automotive hybrids where halogen content is unrestricted | Select when cost sensitivity outweighs halogen-free requirement and full AEC-Q101 compliance is retained |
| SMAJ33A | Lower PPPM (400 W), smaller SMA package (DO-214AC), higher RθJA (90 °C/W), same VWM/VBR/VC | Suitable for space-constrained consumer PCBs but not for sustained 1000 W surge environments | Choose only for non-automotive, low-energy applications where footprint reduction is prioritized over power handling |
Compared with SMB10J33AHM3_A/H, the HE3 variant trades halogen-free construction for marginally lower cost while retaining identical surge capability and qualification; the SMAJ33A sacrifices 60% peak power rating and thermal performance for 30% smaller footprint - neither is pin-compatible due to differing package outlines (SMB vs. SMA).
Availability
SMB10J33AHM3_A/H is available at Aetrix Electronics and suitable for automotive ECU design, industrial sensor interface development, and telecom DC power input protection requiring stable component supply across extended production lifecycles.
Supply support for SMB10J33AHM3_A/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, automotive qualification, and high-power density packaging.
The SMB10JxxA series belongs to Vishay's TRANSZORB® TVS platform, engineered specifically for high-energy transient suppression in automotive, industrial, and telecom infrastructure where AEC-Q101 compliance and 1000 W surge capability are mandatory.
FAQ
What is the clamping voltage of SMB10J33AHM3_A/H at its rated peak pulse current?
The SMB10J33AHM3_A/H has a maximum clamping voltage (VC) of 53.3 V at 18.8 A peak pulse current (IPPM) under the standard 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and defines the upper voltage limit imposed on the protected circuit during surge events - critical for ensuring downstream 33 V-rated ICs remain within safe operating area.
Is SMB10J33AHM3_A/H qualified for automotive applications?
Yes, SMB10J33AHM3_A/H is AEC-Q101 qualified, as confirmed by Vishay's ordering code suffix "HM3" and documentation (Doc. #88422, Rev. 09-Jan-2024). This qualification covers stress testing for temperature cycling, humidity, mechanical shock, and surge endurance - validating its use in engine control units, body control modules, and ADAS sensor assemblies.
What does the "HM3" suffix mean in SMB10J33AHM3_A/H?
The "HM3" suffix in SMB10J33AHM3_A/H indicates halogen-free, RoHS-compliant construction meeting JEDEC JESD201 Class 2 whisker resistance, and AEC-Q101 qualification. It distinguishes this variant from commercial-grade E3/M3 versions and confirms compliance with automotive material restrictions and reliability requirements.
Can SMB10J33AHM3_A/H be used in bidirectional configurations?
No, SMB10J33AHM3_A/H is unidirectional only, as indicated by its "A" suffix (vs. "CA" for bidirectional variants like SMB8J33CA). It features a cathode band marking and conducts only in reverse bias above VBR; using it in bidirectional applications would leave positive-going transients unprotected and risks forward conduction failure.
What is the thermal resistance from junction to ambient for SMB10J33AHM3_A/H?
The SMB10J33AHM3_A/H 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 assumes standard JEDEC test conditions and informs derating curves - for example, at 1000 W surge, junction temperature rise is ~72 K above ambient if sustained, emphasizing need for proper pad layout and airflow.
SMB10J33AHM3_A/H 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):
- 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_A/H FAQ
1.How can I place an order for SMB10J33AHM3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMB10J33AHM3_A/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_A/H reliable?
The price and inventory of SMB10J33AHM3_A/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_A/H is usually 5 days.
3.What payment methods are accepted for SMB10J33AHM3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMB10J33AHM3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMB10J33AHM3_A/H?
SMB10J33AHM3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMB10J33AHM3_A/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_A/H?
For technical support, including SMB10J33AHM3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMB10J33AHM3_A/H requirements.
6.How does Aetrix verify that SMB10J33AHM3_A/H is sourced from the original manufacturer or authorized distributors?
All SMB10J33AHM3_A/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_A/H meets industry standards.
7.What is the process for return or replacement of SMB10J33AHM3_A/H?
All SMB10J33AHM3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with SMB10J33AHM3_A/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_A/H part is unused and in its original packaging.
Return procedure for SMB10J33AHM3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMB10J33AHM3_A/H Tags
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