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Vishay General Semiconductor - Diodes Division SMBJ90AHM3_A/H
- Part No.:
- SMBJ90AHM3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ90AHM3_A/H.pdf
- Description:
- TVS DIODE 90VWM 146VC DO214AA
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
SMBJ90AHM3_A/H from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMB (DO-214AA) package, designed for robust overvoltage protection of DC power rails and signal lines. It features a 90 V stand-off voltage (VWM), 100 V minimum breakdown voltage (VBR), 146 V maximum clamping voltage (VC) at 4.1 A peak pulse current (IPPM), and 600 W peak pulse power rating with 10/1000 µs waveform - deployed in automotive power supply inputs, industrial sensor interfaces, and telecom line protection.
For engineers reviewing the SMBJ90AHM3_A/H datasheet, SMBJ90AHM3_A/H pinout, SMBJ90AHM3_A/H application, or SMBJ90AHM3_A/H equivalent, key selection criteria include clamping performance under 4.1 A surge, unidirectional polarity with cathode band marking, halogen-free RoHS-compliant construction (HM3 suffix), and AEC-Q101 qualification suitability for automotive-grade designs.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector: when reverse voltage exceeds VBR (100–111 V), it avalanches to divert transient energy away from downstream circuitry. Its low incremental surge resistance ensures stable clamping during repetitive transients, while the glass-passivated junction enables fast response time (<1 ns) and reliable long-term stability.
The SMBJ90AHM3_A/H is rated for TJ = –55 °C to +150 °C operation, with thermal resistance RθJA = 100 °C/W and RθJL = 20 °C/W. It meets MSL Level 1 per J-STD-020, supports 260 °C lead-free reflow, and is qualified to AEC-Q101 - confirming suitability for under-hood automotive electronics where thermal cycling and vibration resilience are critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 90 V - maximum continuous reverse operating voltage before clamping initiates; defines safe DC rail margin for 12 V/24 V/48 V systems. |
| VBR (min/max) | 100 V / 111 V at IT = 1 mA - guaranteed avalanche onset range; ensures predictable turn-on across temperature and unit variation. |
| VC @ IPPM | 146 V at 4.1 A (10/1000 µs) - peak clamped voltage seen by protected IC/MOSFET; limits stress on downstream components. |
| PPPM | 600 W - peak transient energy absorption capability; sufficient for ISO 7637-2 Pulse 1/2a/5a and IEC 61000-4-5 Level 3 surges. |
| ID @ VWM | 1.0 µA - ultra-low leakage at rated stand-off; avoids parasitic loading on high-impedance sensor or reference circuits. |
| TJ max. | +150 °C - enables placement near hot components (e.g., power MOSFETs, DC/DC converters) without derating concerns. |
| Package | SMB (DO-214AA) - industry-standard 2-pin SMD outline (5.21 mm × 4.06 mm × 2.20 mm); compatible with automated pick-and-place and reflow. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, unidirectional configuration with cathode indicated by molded band. Matte tin-plated leads, J-STD-002 solderable, MSL Level 1 compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side connection point | Connected to system ground or return path; completes clamping loop during transient events. |
| Cathode | High-side connection point | Connected to protected line (e.g., 90 V rail input); polarity-sensitive - reversal prevents clamping function. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 µs) | Enables single-device protection against severe automotive load dump and inductive switching transients without external series impedance. |
| AEC-Q101 qualified (HM3 suffix) | Validated for automotive applications including engine control units, body control modules, and ADAS power supplies requiring zero-failure reliability. |
| Halogen-free, RoHS-compliant | Meets EU Directive 2011/65/EU and JEDEC J-STD-203; eliminates brominated flame retardants for safer end-of-life processing. |
| Low clamping ratio (VC/VBR ≈ 1.46) | Minimizes overvoltage overshoot during clamping - critical for protecting 100 V-rated MOSFETs or wide-VDS GaN drivers. |
| MSL Level 1, 260 °C peak reflow | Supports standard lead-free assembly without pre-baking; reduces manufacturing complexity and cost in high-volume production. |
Applications
| Automotive Power Input Protection | Industrial Sensor Signal Line Protection |
|---|---|
|
Use Scenario: Protecting 90 V battery-fed ECUs from load dump transients (ISO 7637-2 Pulse 5a) and alternator ripple. IC Role / Device Role / Timing Role: Shunt-type transient suppressor placed directly across input rail, clamping within nanoseconds. Use Value: Limits peak voltage to ≤146 V, preventing damage to 100 V input-rated DC/DC controllers and microcontrollers. |
Use Scenario: Safeguarding analog output lines (e.g., 4–20 mA current loops) in PLC I/O modules from ESD and field wiring surges. IC Role / Device Role / Timing Role: Unidirectional TVS connected between signal line and ground, absorbing ±8 kV contact ESD per IEC 61000-4-2. Use Value: Sub-1 µA leakage preserves loop accuracy; 146 V clamping protects op-amp output stages without adding series resistance. |
| Telecom DC Power Feeds | Motor Drive Gate Driver Protection |
|
Use Scenario: Securing -48 V or +90 V telecom rectifier outputs against lightning-induced surges on distribution bus lines. IC Role / Device Role / Timing Role: Primary-level TVS on main power feed, coordinated with upstream MOVs and downstream polymer PTCs. Use Value: 600 W rating handles multi-event surges; AEC-Q101 qualification ensures long-term reliability in 24/7 base station operation. |
Use Scenario: Clamping gate-source voltage spikes on high-side SiC MOSFETs in 90 V bus motor inverters subjected to dV/dt coupling. IC Role / Device Role / Timing Role: Localized TVS mounted adjacent to gate driver IC output, referenced to source potential. Use Value: Fast <1 ns response prevents false turn-on; 146 V VC ensures gate oxide remains below 20 V stress margin. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ90AHE3_A/H | Same electrical specs (VWM = 90 V, VC = 146 V), but RoHS-compliant with brominated flame retardant (E3 suffix), not halogen-free. | Approved for commercial/industrial use; not AEC-Q101 qualified - unsuitable for automotive under-hood deployment. | Select SMBJ90AHE3_A/H only if halogen-free requirement is waived and automotive qualification is unnecessary. |
| SMCJ90A-HM3 | Same VWM/VC ratings but in larger SMC (DO-214AB) package; higher IPPM (6.4 A) and PPPM (1500 W) due to improved thermal mass. | Used where higher surge endurance is required (e.g., front-end AC/DC input); PCB footprint and height differ significantly. | Choose SMCJ90A-HM3 only when 600 W is insufficient and board space allows SMC footprint (7.11 mm × 6.22 mm). |
Compared with SMBJ90AHE3_A/H, SMBJ90AHM3_A/H adds halogen-free compliance and AEC-Q101 qualification without sacrificing clamping performance; versus SMCJ90A-HM3, it trades surge capacity for compact SMB footprint - making SMBJ90AHM3_A/H optimal for space-constrained automotive modules needing certified reliability.
Availability
SMBJ90AHM3_A/H is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor interface boards, and telecom DC power distribution systems requiring stable component supply, long-lifecycle support, and traceable sourcing.
Supply support for SMBJ90AHM3_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, efficiency, and application-specific optimization.
The SMBJ series is engineered for high-energy transient suppression in harsh environments - targeting automotive, industrial, and telecom applications where consistent clamping, thermal resilience, and qualification compliance are mandatory.
FAQ
What is the clamping voltage of SMBJ90AHM3_A/H at its rated peak pulse current?
The SMBJ90AHM3_A/H has a maximum clamping voltage (VC) of 146 V at 4.1 A peak pulse current (IPPM) under the standard 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and guarantees that protected circuitry will not experience voltages exceeding 146 V during specified surge events - critical for safeguarding 100 V-rated components. The SMBJ90AHM3_A/H maintains this clamping performance across its full operating temperature range (–55 °C to +150 °C).
Is SMBJ90AHM3_A/H suitable for automotive applications?
Yes, SMBJ90AHM3_A/H is AEC-Q101 qualified, as confirmed by Vishay's ordering code suffix "HM3" and documentation (Document Number: 88392). It is specifically intended for automotive use cases including engine control units, body electronics, and ADAS power supplies. The device undergoes stress testing for temperature cycling, humidity, mechanical shock, and surge endurance - meeting requirements for under-hood deployment where ambient temperatures reach +125 °C and long-term reliability is non-negotiable. SMBJ90AHM3_A/H is not just automotive-capable; it is automotive-qualified.
How does the HM3 suffix differ from E3 or HE3 in the SMBJ90A family?
The HM3 suffix on SMBJ90AHM3_A/H indicates halogen-free, RoHS-compliant construction *and* AEC-Q101 qualification - distinguishing it from E3 (RoHS-compliant, commercial grade only) and HE3 (RoHS-compliant + AEC-Q101, but with brominated flame retardant). HM3 uses halogen-free molding compound meeting IEC 61249-2-21, critical for automotive OEMs enforcing strict material declarations. All three share identical electrical parameters (VWM = 90 V, VC = 146 V), but only HM3 satisfies both halogen-free and automotive qualification mandates simultaneously. SMBJ90AHM3_A/H is the sole variant meeting both criteria.
What is the thermal resistance and maximum junction temperature of SMBJ90AHM3_A/H?
SMBJ90AHM3_A/H has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W and junction-to-lead resistance (RθJL) of 20 °C/W, measured on 0.2" × 0.2" copper pads. Its maximum operating junction temperature (TJ max.) is +150 °C, with storage range extending from –55 °C to +150 °C. These values enable reliable operation in thermally dense layouts - such as near DC/DC converters or motor drivers - without forced cooling. Derating curves (Fig. 2 in datasheet 88392) confirm usable power dissipation down to 50 % at 100 °C ambient, ensuring robustness in real-world enclosures. SMBJ90AHM3_A/H is rated for continuous PD = 5.0 W at TA = 50 °C.
Can SMBJ90AHM3_A/H be used in bidirectional protection circuits?
No, SMBJ90AHM3_A/H is strictly unidirectional - indicated by its "A" suffix and cathode band marking. Bidirectional variants use the "CA" suffix (e.g., SMBJ90CA) and exhibit symmetrical clamping in both polarities. Using SMBJ90AHM3_A/H in a bidirectional application would result in forward conduction during negative transients, causing failure or uncontrolled current flow. For AC-coupled or floating signal lines requiring two-quadrant protection, SMBJ90CA or equivalent must be selected. SMBJ90AHM3_A/H is designed exclusively for DC rail protection with defined polarity.
SMBJ90AHM3_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):
- 90V
- Voltage - Breakdown (Min):
- 100V
- Voltage - Clamping (Max) @ Ipp:
- 146V
- Current - Peak Pulse (10/1000µs):
- 4.1A
- Power - Peak Pulse:
- 600W
- 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)
SMBJ90AHM3_A/H FAQ
1.How can I place an order for SMBJ90AHM3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ90AHM3_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 SMBJ90AHM3_A/H reliable?
The price and inventory of SMBJ90AHM3_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 SMBJ90AHM3_A/H is usually 5 days.
3.What payment methods are accepted for SMBJ90AHM3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ90AHM3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ90AHM3_A/H?
SMBJ90AHM3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ90AHM3_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 SMBJ90AHM3_A/H?
For technical support, including SMBJ90AHM3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ90AHM3_A/H requirements.
6.How does Aetrix verify that SMBJ90AHM3_A/H is sourced from the original manufacturer or authorized distributors?
All SMBJ90AHM3_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 SMBJ90AHM3_A/H meets industry standards.
7.What is the process for return or replacement of SMBJ90AHM3_A/H?
All SMBJ90AHM3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ90AHM3_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 SMBJ90AHM3_A/H part is unused and in its original packaging.
Return procedure for SMBJ90AHM3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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