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Vishay General Semiconductor - Diodes Division SMBJ9.0-E3/5B
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- Part No.:
- SMBJ9.0-E3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ9.0-E3/5B.pdf
- Description:
- TVS DIODE 9VWM 16.9VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:3,081
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Product details
Overview
SMBJ9.0-E3/5B from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode designed for primary overvoltage protection of DC power rails and signal lines. It features a 9.0 V stand-off voltage (VWM), 10.0–11.1 V breakdown range at 1 mA, 15.4 V maximum clamping voltage at 39.0 A peak pulse current, and 600 W peak pulse power rating per 10/1000 µs waveform - deployed in industrial sensor interfaces and automotive body control modules.
For engineers reviewing the SMBJ9.0-E3/5B datasheet, SMBJ9.0-E3/5B pinout, SMBJ9.0-E3/5B application, or SMBJ9.0-E3/5B equivalent, key selection criteria include clamping performance under 39 A surge, unidirectional polarity with cathode band marking, SMB (DO-214AA) package compatibility with automated SMT placement, and RoHS-compliant matte tin terminations rated to 260 °C reflow.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector: when reverse-biased voltage exceeds VBR, it avalanches to divert transient energy away from downstream ICs. Its glass-passivated junction ensures stable leakage (<1.0 µA at 9.0 V) and fast response (<1 ns), while low incremental surge resistance enables effective suppression of inductive switching spikes and ESD events.
The device is rated for continuous operation from –55 °C to +150 °C junction temperature, with thermal resistance RθJA = 100 °C/W on standard 0.2" × 0.2" copper pads. It meets MSL Level 1 per J-STD-020 and is qualified to AEC-Q101 when ordered with HE3/HM3 suffixes - though SMBJ9.0-E3/5B itself is commercial-grade.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 9.0 V - Maximum continuous reverse operating voltage before conduction begins; sets minimum system rail margin. |
| VBR @ IT = 1 mA | 10.0–11.1 V - Verified avalanche onset range; ensures reliable triggering above nominal rail. |
| VC @ IPPM = 39.0 A | 15.4 V - Clamped voltage during 10/1000 µs surge; defines maximum stress seen by protected IC. |
| PPPM | 600 W - Peak pulse power handling capability; supports repetitive transients up to 0.01% duty cycle. |
| IFSM | 100 A - Non-repetitive forward surge rating (8.3 ms half-sine); relevant for fault-current limiting in power stages. |
| Junction Temp. Range | –55 °C to +150 °C - Enables deployment in under-hood automotive, industrial motor drives, and outdoor telecom equipment. |
| Package | SMB (DO-214AA) - Standardized 2-pin surface-mount outline with 5.59 mm max length; compatible with IPC-7351B footprint. |
Pinout & Package
Package: SMB (DO-214AA), molded plastic case with matte tin-plated leads; polarity indicated by cathode band on one end. Mounting requires 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal per Vishay recommended layout.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference node | Connected to ground or lowest potential point; completes shunt path during overvoltage event. |
| Cathode | Protected line input | Connected to line being protected (e.g., 9 V supply rail); band-marked end identifies this terminal. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 µs) | Enables robust protection against ISO 7637-2 Pulse 1/2a/5a and IEC 61000-4-5 surges without derating. |
| 15.4 V clamping at 39 A | Provides ≥1.6× margin over 9 V rail, preventing latch-up or damage to 12 V-tolerant interface ICs. |
| Glass passivated junction | Ensures long-term stability of VBR and leakage under thermal cycling and humidity exposure. |
| MSL Level 1, 260 °C reflow compatible | Supports single-pass lead-free assembly without preconditioning or special handling. |
| RoHS-compliant, halogen-free option available | E3 suffix confirms compliance with EU RoHS Directive 2011/65/EU and JEDEC JS709E material requirements. |
Applications
| Automotive Body Control Module | Industrial Sensor Signal Conditioning |
|---|---|
|
Use Scenario: Protecting LIN bus transceivers and microcontroller I/O pins from load dump and inductive kickback in door module PCBs. IC Role / Device Role / Timing Role: Unidirectional shunt clamp placed between LIN line and chassis ground, triggered within <1 ns of overvoltage. Use Value: Limits transient voltage to ≤15.4 V, preserving 12 V-tolerant transceiver integrity during 12 V system load dump events. |
Use Scenario: Safeguarding analog outputs of 4–20 mA current-loop sensors exposed to field wiring transients in factory automation cabinets. IC Role / Device Role / Timing Role: Reverse-biased TVS across sensor output and return, clamping induced surges before reaching precision DAC or op-amp stage. Use Value: Maintains signal accuracy by holding clamped voltage below 15.4 V, preventing op-amp saturation or output stage latch-up. |
| Telecom Power Supply Input | Consumer USB-C Port Protection |
|
Use Scenario: Secondary-side overvoltage protection on +9 V auxiliary rails feeding PoE-powered network switches. IC Role / Device Role / Timing Role: Standoff-rated TVS placed between 9 V rail and GND, absorbing coupled lightning-induced surges from Ethernet magnetics. Use Value: Withstands 600 W pulses without degradation, ensuring sustained protection across 10-year field life in outdoor deployments. |
Use Scenario: Input-stage surge suppression on USB-C VBUS lines in portable docking stations handling up to 20 V PD profiles. IC Role / Device Role / Timing Role: Unidirectional clamp between VBUS and GND, activated only during overvoltage - no effect on normal 5–20 V operation. Use Value: Provides 15.4 V clamping ceiling compatible with USB PD 3.1 EPR sink ICs rated to 28 V absolute maximum. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ9.0A-M3/5B | Halogen-free variant with identical electrical specs and SMB package; same VWM, VBR, VC, and PPPM. | Required where halogen-free compliance (IEC 61249-2-21) is mandated for printed board assemblies. | Select SMBJ9.0A-M3/5B when full halogen-free material declaration and JESD201 Class 2 whisker resistance are contractually required. |
| SMCJ9.0A-E3/57T | Same VWM and VBR, but SMC (DO-214AB) package; 1500 W PPPM, 100 A IPPM, 17.6 V VC. | Used where higher surge capacity is needed, e.g., front-end AC/DC input stages or outdoor antenna feeds. | Choose SMCJ9.0A-E3/57T only if system-level surge testing exceeds 600 W - otherwise SMBJ9.0-E3/5B offers optimal size-to-performance ratio. |
Compared with SMBJ9.0A-M3/5B, SMBJ9.0-E3/5B provides identical protection performance in a RoHS-compliant (non-halogen-free) form; versus SMCJ9.0A-E3/57T, it trades 2.5× surge capacity for 30% smaller PCB footprint and lower parasitic inductance - critical for high-speed signal line protection.
Availability
SMBJ9.0-E3/5B is available at Aetrix Electronics and suitable for industrial sensor interfaces, automotive body electronics, and telecom power supply inputs requiring stable component supply, consistent parametric performance, and full traceability through Vishay's authorized channel.
Supply support for SMBJ9.0-E3/5B 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 efficiency, and automotive qualification.
The SMBJ series is engineered for robust transient suppression in space-constrained, high-reliability applications - targeting design-in across automotive, industrial, and communications infrastructure where predictable clamping and long-term stability are mandatory.
FAQ
What is the maximum clamping voltage of SMBJ9.0-E3/5B at its rated peak pulse current?
The SMBJ9.0-E3/5B has a maximum clamping voltage (VC) of 15.4 V when subjected to its rated peak pulse current of 39.0 A using the standardized 10/1000 µs waveform. This value is measured per Figure 1 in Vishay document 88392 and defines the upper voltage limit imposed on protected circuitry during surge events. The SMBJ9.0-E3/5B maintains this clamping performance across its specified operating temperature range.
Is SMBJ9.0-E3/5B suitable for bidirectional transient protection?
No, SMBJ9.0-E3/5B is a unidirectional TVS diode, identified by its cathode band marking and specified parameters including VBR and VC only for reverse-bias operation. For bidirectional protection, Vishay offers the SMBJ9.0CA variant - which uses a CA suffix, has symmetrical breakdown in both directions, and is marked without polarity band. The SMBJ9.0-E3/5B must be oriented correctly in-circuit with cathode toward the protected line.
What does the "-E3/5B" suffix indicate in SMBJ9.0-E3/5B?
The "-E3" suffix denotes RoHS-compliant, commercial-grade construction with matte tin-plated leads meeting J-STD-002 solderability and JESD201 Class 2 whisker resistance. The "/5B" indicates packaging in 13-inch diameter plastic tape and reel, with a base quantity of 3200 units per reel - optimized for high-volume SMT assembly. This ordering code distinguishes it from /52 (7-inch reel, 750 units) and HE3 (AEC-Q101 qualified) variants.
Does SMBJ9.0-E3/5B meet automotive qualification standards?
The SMBJ9.0-E3/5B itself is not AEC-Q101 qualified; it is rated for commercial temperature range (–55 °C to +150 °C) and intended for industrial and general-purpose use. Vishay offers AEC-Q101 qualified versions under the HE3 and HM3 suffixes (e.g., SMBJ9.0AHE3_B/I). To use SMBJ9.0-E3/5B in automotive applications, system-level validation per ISO 16750 and customer-specific requirements is required - the SMBJ9.0-E3/5B alone does not carry automotive qualification.
How does SMBJ9.0-E3/5B compare to SMAJ9.0A in terms of surge capability?
The SMBJ9.0-E3/5B delivers 600 W peak pulse power (10/1000 µs), whereas the SMAJ9.0A is rated for 400 W under the same waveform. This 50% higher surge capacity allows SMBJ9.0-E3/5B to handle larger transients without degradation, making it preferred for demanding environments like industrial motor controls or telecom power inputs. Both share the same VWM (9.0 V) and VBR range, but SMBJ9.0-E3/5B's larger SMB package enables superior thermal dissipation versus SMAJ's smaller SMA (DO-214AC) outline.
SMBJ9.0-E3/5B 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):
- 9V
- Voltage - Breakdown (Min):
- 10V
- Voltage - Clamping (Max) @ Ipp:
- 16.9V
- Current - Peak Pulse (10/1000µs):
- 35.5A
- Power - Peak Pulse:
- 600W
- 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-214AA (SMBJ)
SMBJ9.0-E3/5B FAQ
1.How can I place an order for SMBJ9.0-E3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ9.0-E3/5B 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 SMBJ9.0-E3/5B reliable?
The price and inventory of SMBJ9.0-E3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ9.0-E3/5B is usually 5 days.
3.What payment methods are accepted for SMBJ9.0-E3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ9.0-E3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ9.0-E3/5B?
SMBJ9.0-E3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ9.0-E3/5B 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 SMBJ9.0-E3/5B?
For technical support, including SMBJ9.0-E3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ9.0-E3/5B requirements.
6.How does Aetrix verify that SMBJ9.0-E3/5B is sourced from the original manufacturer or authorized distributors?
All SMBJ9.0-E3/5B 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 SMBJ9.0-E3/5B meets industry standards.
7.What is the process for return or replacement of SMBJ9.0-E3/5B?
All SMBJ9.0-E3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ9.0-E3/5B, 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 SMBJ9.0-E3/5B part is unused and in its original packaging.
Return procedure for SMBJ9.0-E3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ9.0-E3/5B Tags
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Diodes Incorporated
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