My Inquiry
My Account
Vishay General Semiconductor - Diodes Division TPSMA30AHM3_B/H
- Part No.:
- TPSMA30AHM3_B/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
TPSMA30AHM3_B/H.pdf
- Description:
- TVS DIODE 25.6VWM 41.4VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:3,045
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
TPSMA30AHM3_B/H from Vishay General Semiconductor is a unidirectional surface-mount PAR® transient voltage suppressor (TVS) diode in SMA (DO-214AC) package, rated for 30 V breakdown voltage (VBR = 28.5–31.5 V), 400 W peak pulse power (10/1000 µs), and 185 °C maximum junction temperature - designed to protect MOSFETs, ICs, and sensor signal lines in automotive and industrial power rails.
For engineers reviewing the TPSMA30AHM3_B/H datasheet, TPSMA30AHM3_B/H pinout, TPSMA30AHM3_B/H application, or TPSMA30AHM3_B/H equivalent, key selection criteria include clamping voltage (VC = 41.4 V at IPPM), unidirectional polarity, AEC-Q101 qualification, and halogen-free RoHS-compliant construction per JESD201 Class 2 whisker test.
Technical Context
This TVS diode operates as a clamping device in parallel with sensitive circuit nodes, activating above its standoff voltage (VWM = 25.6 V) to divert surge current away from downstream components. Its passivated anisotropic rectifier technology ensures stable performance under high-temperature stress up to 185 °C.
The device delivers 9.7 A peak pulse current (IPPM) at 41.4 V clamping voltage under 10/1000 µs waveform, with low incremental surge resistance and sub-nanosecond response time - enabling robust protection against lightning-induced transients and inductive switching spikes in DC power distribution networks.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 28.5 V / 30.0 V / 31.5 V - defines precise voltage threshold at which avalanche conduction begins under 1 mA test current |
| VWM | 25.6 V - maximum continuous reverse operating voltage before leakage exceeds 1 μA at 25 °C |
| VC @ IPPM | 41.4 V - clamped voltage during 9.7 A surge, limiting stress on protected ICs or MOSFETs |
| PPPM | 400 W - peak pulse power handling capability per 10/1000 µs waveform, derated above 25 °C |
| TJ max. | 185 °C - enables operation in under-hood automotive environments and high-power industrial enclosures |
| Polarity | Unidirectional - protects only against positive-going transients relative to cathode connection |
| AEC-Q101 | Qualified - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, matte tin-plated leads, MSL Level 1 (260 °C reflow peak), 0.064 g unit weight.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Surge current sink node | Connected to protected line; conducts avalanche current to ground when VIN > VBR |
| Anode | Reference/return path | Typically tied to system ground or low-impedance return plane to complete clamping loop |
Key Features
| Feature | Design Value |
|---|---|
| Junction passivation optimized design | Reduces surface leakage and improves long-term stability under humidity and thermal cycling |
| 400 W peak pulse power (10/1000 µs) | Handles repetitive surges up to 0.01% duty cycle without degradation in automotive power rail protection |
| Halogen-free, RoHS-compliant, AEC-Q101 qualified | Meets automotive supply chain requirements for environmental compliance and reliability validation |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients, improving protection margin for 3.3 V/5 V logic interfaces |
| MSL Level 1 moisture sensitivity | Enables standard SMT assembly without dry-pack or baking, reducing manufacturing overhead |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Line Clamping |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs from load dump and alternator ripple transients. IC Role / Device Role / Timing Role: Parallel-connected TVS diode providing low-impedance shunt path during overvoltage events. Use Value: Clamps transients to ≤41.4 V, safeguarding 36 V-rated CAN transceivers and microcontrollers without derating. | Use Scenario: Shielding analog output lines of pressure/temperature sensors in factory automation PLC modules. IC Role / Device Role / Timing Role: Unidirectional surge clamp placed between sensor output and ADC input stage. Use Value: Limits induced surges to <41.4 V while maintaining <1 μA leakage at 25.6 V, preserving signal integrity. |
| Consumer Power Adapter Input Stage | Telecom DC Feeder Line Protection |
Use Scenario: Secondary-side overvoltage suppression in USB-C PD adapters with wide-input-range buck converters. IC Role / Device Role / Timing Role: Standoff-rated TVS absorbing residual flyback spikes and ESD events on 5–20 V output rails. Use Value: Withstands 40 A IFSM and maintains VWM = 25.6 V, enabling compatibility with multi-voltage USB PD profiles. | Use Scenario: Protecting PoE-powered equipment (e.g., IP cameras) from lightning-induced surges on 48 V DC feeder lines. IC Role / Device Role / Timing Role: Primary-stage clamping device mounted at DC input connector before DC-DC converter. Use Value: 400 W PPPM rating and 185 °C TJ support outdoor deployment in uncontrolled ambient conditions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ30A | Same VBR range (28.5–31.5 V), identical SMA package, but not AEC-Q101 qualified and lacks halogen-free certification | Targeted at commercial/industrial use only; unsuitable for automotive production programs requiring AEC-Q101 traceability | Select SMAJ30A only for cost-sensitive non-automotive designs where AEC-Q101 and halogen-free compliance are not required |
| TPSMA30AHM3_T/R | Identical electrical specs and qualification; differs only in tape-and-reel packaging (7500 pcs vs. 1800 pcs per reel) | No functional difference; same PCB layout and thermal performance; selected based on production volume and SMT line feed requirements | Choose TPSMA30AHM3_T/R for high-volume automated assembly; TPSMA30AHM3_B/H for prototyping or low-volume builds |
Compared with SMAJ30A and TPSMA30AHM3_T/R, the TPSMA30AHM3_B/H uniquely combines AEC-Q101 qualification, halogen-free construction, and JESD201 Class 2 whisker resistance - making it the preferred choice for automotive Tier-1 suppliers and industrial OEMs requiring full supply-chain compliance documentation.
Availability
TPSMA30AHM3_B/H is available at Aetrix Electronics and suitable for automotive ECU protection, industrial sensor interface hardening, and telecom DC feeder line surge suppression requiring stable component supply across extended product lifecycles.
Supply support for TPSMA30AHM3_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, TVS devices, and optoelectronics with emphasis on reliability, high-temperature operation, and automotive qualification.
The TPSMAxxA family was engineered specifically for high-reliability transient suppression in harsh environments - targeting automotive power systems, industrial control units, and infrastructure equipment where 185 °C operation and AEC-Q101 validation are mandatory.
FAQ
What is the clamping voltage of the TPSMA30AHM3_B/H under peak surge conditions?
The TPSMA30AHM3_B/H has a maximum clamping voltage (VC) of 41.4 V when subjected to its rated peak pulse current (IPPM = 9.7 A) using the standard 10/1000 µs waveform. This value is measured at TA = 25 °C on a PCB with 0.2" × 0.2" copper pads per terminal. The clamping performance remains stable across its full operating temperature range due to low temperature coefficient (αT = 0.088 %/°C).
Is the TPSMA30AHM3_B/H suitable for automotive applications?
Yes, the TPSMA30AHM3_B/H is AEC-Q101 qualified and explicitly designated for automotive use with the HM3 suffix. It meets stringent reliability requirements including high-temperature operation up to 185 °C, JESD201 Class 2 whisker resistance, and halogen-free RoHS compliance - making it appropriate for engine control units, body electronics, and ADAS power domains.
What does the "HM3" suffix indicate in TPSMA30AHM3_B/H?
The "HM3" suffix in TPSMA30AHM3_B/H denotes halogen-free, RoHS-compliant construction with AEC-Q101 qualification and JESD201 Class 2 whisker resistance. It distinguishes this variant from HE3 (RoHS-compliant and AEC-Q101 qualified but not halogen-free) and standard non-qualified versions - confirming full automotive supply chain compliance.
How does the TPSMA30AHM3_B/H compare to bidirectional TVS diodes?
The TPSMA30AHM3_B/H is unidirectional and protects only against positive-going transients relative to its cathode. Unlike bidirectional variants, it cannot suppress negative surges - but offers lower leakage (<1 μA at VWM) and tighter VBR tolerance, making it ideal for DC power rail protection where polarity is fixed and leakage sensitivity is critical.
What is the maximum steady-state power dissipation for the TPSMA30AHM3_B/H?
The TPSMA30AHM3_B/H has a maximum steady-state power dissipation (PD) of 1.0 W at TA = 25 °C, derated linearly above that ambient temperature. This rating applies to continuous reverse-bias operation below VWM; during transient suppression, energy is handled by the 400 W peak pulse rating, not steady-state dissipation.
TPSMA30AHM3_B/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AC, SMA
- Series:
- PAR®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 25.6V
- Voltage - Breakdown (Min):
- 28.5V
- Voltage - Clamping (Max) @ Ipp:
- 41.4V
- Current - Peak Pulse (10/1000µs):
- 9.7A
- Power - Peak Pulse:
- 400W
- Power Line Protection:
- No
- Applications:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 185°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
TPSMA30AHM3_B/H FAQ
1.How can I place an order for TPSMA30AHM3_B/H through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMA30AHM3_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 TPSMA30AHM3_B/H reliable?
The price and inventory of TPSMA30AHM3_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 TPSMA30AHM3_B/H is usually 5 days.
3.What payment methods are accepted for TPSMA30AHM3_B/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMA30AHM3_B/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMA30AHM3_B/H?
TPSMA30AHM3_B/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMA30AHM3_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 TPSMA30AHM3_B/H?
For technical support, including TPSMA30AHM3_B/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMA30AHM3_B/H requirements.
6.How does Aetrix verify that TPSMA30AHM3_B/H is sourced from the original manufacturer or authorized distributors?
All TPSMA30AHM3_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 TPSMA30AHM3_B/H meets industry standards.
7.What is the process for return or replacement of TPSMA30AHM3_B/H?
All TPSMA30AHM3_B/H units undergo pre-shipment inspection (PSI). If there is an issue with TPSMA30AHM3_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 TPSMA30AHM3_B/H part is unused and in its original packaging.
Return procedure for TPSMA30AHM3_B/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPSMA30AHM3_B/H 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 …
