My Inquiry
My Account
Vishay General Semiconductor - Diodes Division SMBJ13AHM3/I
- Part No.:
- SMBJ13AHM3/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ13AHM3/I.pdf
- Description:
- TVS DIODE 13VWM 21.5VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:7,475
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SMBJ13AHM3/I from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, designed to protect sensitive electronics against inductive switching transients and lightning-induced surges. It features a 13 V stand-off voltage (VWM), 21.5 V maximum clamping voltage at 27.9 A peak pulse current (10/1000 μs), and 600 W peak pulse power dissipation - deployed on signal lines of industrial sensors and MOSFET gate drivers.
For engineers reviewing the SMBJ13AHM3/I datasheet, SMBJ13AHM3/I pinout, SMBJ13AHM3/I application, or SMBJ13AHM3/I equivalent, this page delivers verified electrical specs, thermal derating behavior, AEC-Q101 qualification status, and real-world protection use cases for automotive-grade board-level surge immunity design.
Technical Context
The SMBJ13AHM3/I operates as a unidirectional avalanche diode with cathode-band polarity marking, optimized for fast response (<1 ns) to transient overvoltages while maintaining low incremental surge resistance. Its glass-passivated junction ensures stable breakdown characteristics and long-term reliability under repetitive surge stress.
Rated for -55 °C to +150 °C operating junction temperature, it uses a thermally efficient SMB package with RθJA = 100 °C/W and RθJL = 20 °C/W, enabling robust performance on standard PCB copper pads (0.2" × 0.2") without heatsinking in most industrial and automotive applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 13 V - Maximum continuous reverse working voltage before clamping begins; sets minimum system operating margin. |
| VBR (Breakdown Voltage) | 14.4 V min / 15.9 V max at 1 mA - Confirmed avalanche onset range; defines clamping threshold consistency across production lots. |
| VC (Clamping Voltage) | 21.5 V at IPPM = 27.9 A (10/1000 μs) - Peak voltage seen by protected circuit during worst-case surge; critical for IC I/O voltage tolerance. |
| PPPM (Peak Pulse Power) | 600 W - Sustained energy absorption capability per transient event; enables compliance with IEC 61000-4-5 Level 3 (1 kV/2 Ω). |
| ID (Reverse Leakage) | 1.0 μA max at VWM - Negligible standby current draw; avoids signal line loading or battery drain in always-on systems. |
| TJ max | +150 °C - Enables operation in under-hood automotive environments and high-temperature industrial enclosures. |
| AEC-Q101 Qualified | Yes - Validated for automotive electronic modules requiring zero-failure reliability under temperature cycling, humidity, and mechanical shock. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, halogen-free, RoHS-compliant, MSL Level 1 (260 °C reflow peak). Cathode identified by molded band; anode is unmarked end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient current sink | Connected to protected line; conducts surge current to ground when voltage exceeds VBR. |
| Anode (unbanded end) | Reference node | Typically tied to system ground or low-impedance return path; completes clamping loop during overvoltage events. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 μs) | Supports IEC 61000-4-5 surge immunity up to 1 kV open-circuit / 0.5 kV into 2 Ω load without degradation. |
| 21.5 V clamping at 27.9 A | Protects 24 V industrial I/O circuits and 16 V automotive sensor interfaces within safe voltage margins. |
| AEC-Q101 qualified (HM3 suffix) | Validated for automotive powertrain, body control, and ADAS modules requiring zero latent defects over 15-year service life. |
| Low profile SMB package | Enables automated placement on dense PCBs and fits tight board space constraints typical in ECU and motor drive designs. |
| Glass passivated junction | Ensures stable VBR over time and temperature; eliminates parameter drift in high-humidity or thermal-cycling environments. |
Applications
| Industrial Sensor Protection | Automotive Body Control Module |
|---|---|
|
Use Scenario: Protecting analog output lines (4–20 mA) and digital I/O (CAN/LIN) of pressure/temperature sensors exposed to relay coil back-EMF and cable discharge events. IC Role / Device Role / Timing Role: Unidirectional TVS placed between sensor signal line and chassis ground to clamp transients before they reach ADC input or microcontroller GPIO. Use Value: Prevents latch-up or permanent damage to precision op-amps and SAR ADCs by limiting voltage excursion to ≤21.5 V during 27.9 A surges. |
Use Scenario: Safeguarding LIN bus transceivers and power window motor drivers against battery dump and load-dump transients in vehicle door modules. IC Role / Device Role / Timing Role: Standoff-rated TVS on VBAT-supplied rails and LIN signal paths, absorbing 600 W pulses without thermal runaway. Use Value: Maintains functional safety integrity per ISO 16750-2 by ensuring no communication interruption or component failure during 12 V system load-dump events. |
| Motor Drive Gate Protection | Power Supply Input Stage |
|
Use Scenario: Shielding high-side/low-side MOSFET gate drivers from Miller-induced spikes and shoot-through transients in BLDC inverters. IC Role / Device Role / Timing Role: Fast-response TVS mounted directly at gate driver output pins to clamp sub-10 ns ringing above 13 V. Use Value: Eliminates false turn-on and gate oxide stress by clamping gate-source voltage to ≤21.5 V, preserving FET reliability over >10⁵ switching cycles. |
Use Scenario: Front-end surge suppression on 24 V DC input rails of programmable logic controllers and industrial HMIs subjected to field wiring faults. IC Role / Device Role / Timing Role: Primary unidirectional TVS in series with fuse and common-mode choke, diverting >95 % of surge energy to ground. Use Value: Enables UL 61000-4-5 Level 4 compliance (4 kV line-to-ground) while maintaining <5 ms fault-clearing time and zero downstream component damage. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ13AHE3/I | Same electrical specs but RoHS-compliant commercial grade (non-AEC-Q101); no halogen-free certification. | Lacks automotive qualification; suitable for consumer or non-safety-critical industrial equipment. | Select when AEC-Q101 is not required and cost optimization is prioritized over automotive traceability. |
| SMAJ13A-M3 | Lower PPPM (400 W), higher VC (23.2 V at 17.6 A), SMA package (smaller footprint, lower thermal mass). | Reduced surge handling margin; limited to lower-energy transients (IEC 61000-4-5 Level 2). | Choose only if board space is constrained and surge threat level is confirmed ≤400 W; verify thermal derating at TJ > 100 °C. |
Compared with SMBJ13AHM3/I, SMBJ13AHE3/I offers identical protection performance without automotive qualification, while SMAJ13A-M3 trades surge capacity and thermal robustness for smaller size - making SMBJ13AHM3/I the optimal choice for AEC-Q101-compliant, high-reliability 24 V system protection.
Availability
SMBJ13AHM3/I is available at Aetrix Electronics and suitable for industrial sensor protection, automotive body control modules, and motor drive gate protection requiring stable component supply and full AEC-Q101 traceability.
Supply support for SMBJ13AHM3/I 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 high-reliability diodes, MOSFETs, and passive components for automotive, industrial, and computing markets.
The SMBJ series was engineered specifically for board-level transient immunity in harsh environments, combining high-power surge handling with AEC-Q101 validation and compact SMB packaging for next-generation ECUs and power electronics.
FAQ
What is the clamping voltage of SMBJ13AHM3/I at its rated peak pulse current?
The SMBJ13AHM3/I has a maximum clamping voltage (VC) of 21.5 V at its rated peak pulse current (IPPM) of 27.9 A under the standard 10/1000 μs waveform. This value is measured at TA = 25 °C with devices mounted on 0.2" × 0.2" copper pads and represents the upper limit of voltage imposed on protected circuitry during worst-case surge events - critical for ensuring compatibility with 24 V system I/O tolerances.
Is SMBJ13AHM3/I qualified for automotive applications?
Yes, SMBJ13AHM3/I is AEC-Q101 qualified, as indicated by the "HM3" suffix (halogen-free, RoHS-compliant, and AEC-Q101 qualified). It has undergone rigorous stress testing including temperature cycling, humidity bias, mechanical shock, and accelerated life testing per AEC-Q101 Rev H, making it suitable for deployment in automotive body control modules, infotainment power supplies, and ADAS sensor interfaces.
What does the "HM3" suffix mean in SMBJ13AHM3/I?
The "HM3" suffix in SMBJ13AHM3/I denotes halogen-free, RoHS-compliant construction with full AEC-Q101 qualification. It distinguishes this variant from commercial-grade versions (e.g., "E3" or "M3") and confirms compliance with automotive material requirements, including JESD201 Class 2 whisker resistance and MSL Level 1 moisture sensitivity for lead-free reflow soldering up to 260 °C peak.
How does SMBJ13AHM3/I compare to bidirectional TVS diodes like SMBJ13CA?
SMBJ13AHM3/I is unidirectional and intended for DC-biased lines where polarity is fixed (e.g., VCC rails or single-ended signal paths), offering tighter leakage control (1.0 μA max) and lower forward voltage drop. In contrast, SMBJ13CA is bidirectional and suited for AC-coupled or differential lines (e.g., RS-485), but exhibits double the reverse leakage at low VWM and lacks cathode polarity marking - making SMBJ13AHM3/I preferable for precision 24 V DC protection.
What is the thermal resistance of SMBJ13AHM3/I, and how does it affect layout?
SMBJ13AHM3/I has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W and junction-to-lead resistance (RθJL) of 20 °C/W. To maintain TJ ≤ 150 °C under 600 W surge conditions, PCB layout must use minimum 0.2" × 0.2" copper pads per terminal per Vishay's recommended mounting pad layout - undersized traces or insufficient copper area will cause localized overheating and premature failure during repetitive surges.
SMBJ13AHM3/I Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 13V
- Voltage - Breakdown (Min):
- 14.4V
- Voltage - Clamping (Max) @ Ipp:
- 21.5V
- Current - Peak Pulse (10/1000µs):
- 27.9A
- 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)
SMBJ13AHM3/I FAQ
1.How can I place an order for SMBJ13AHM3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ13AHM3/I 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 SMBJ13AHM3/I reliable?
The price and inventory of SMBJ13AHM3/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ13AHM3/I is usually 5 days.
3.What payment methods are accepted for SMBJ13AHM3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ13AHM3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ13AHM3/I?
SMBJ13AHM3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ13AHM3/I 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 SMBJ13AHM3/I?
For technical support, including SMBJ13AHM3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ13AHM3/I requirements.
6.How does Aetrix verify that SMBJ13AHM3/I is sourced from the original manufacturer or authorized distributors?
All SMBJ13AHM3/I 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 SMBJ13AHM3/I meets industry standards.
7.What is the process for return or replacement of SMBJ13AHM3/I?
All SMBJ13AHM3/I units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ13AHM3/I, 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 SMBJ13AHM3/I part is unused and in its original packaging.
Return procedure for SMBJ13AHM3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ13AHM3/I Tags
-
ESD9B5.0ST5G
onsemi
-
DESD3V3E1BL-7B
Diodes Incorporated
-
ESD5Z3.3T1G
onsemi
-
D5V0H1B2LP-7B
Diodes Incorporated
-
D5V0P1B2LP-7B
Diodes Incorporated
-
DESD5V0U1BA-7
Diodes Incorporated
-
ESD5Z5.0T1G
onsemi
-
DESD5V0U1BB-7
Diodes Incorporated
-
D12V0L1B2LP-7B
Diodes Incorporated
-
PESD2V0Y1BSFYL
Nexperia USA Inc.
-
DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
-
D5V0L1B2WS-7
Diodes Incorporated
Tech Hub
Comparator circuit design covering voltage thresholds, input limits, open-collector outputs, LM393 wiring, op-amp differences, hysteresis, timing, window detection and practical fault diagnosis.
Schmitt triggers use separate rising and falling thresholds to stabilize slow or noisy signals. This guide covers hysteresis, 74HC14 and 74HCT14 selection, comparator calculations, RC oscillators and p…
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
